WO2010053729A1 - Article abrasif revêtu pour applications de polissage ou de rodage et système et procédé pour sa production - Google Patents

Article abrasif revêtu pour applications de polissage ou de rodage et système et procédé pour sa production Download PDF

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Publication number
WO2010053729A1
WO2010053729A1 PCT/US2009/062013 US2009062013W WO2010053729A1 WO 2010053729 A1 WO2010053729 A1 WO 2010053729A1 US 2009062013 W US2009062013 W US 2009062013W WO 2010053729 A1 WO2010053729 A1 WO 2010053729A1
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WIPO (PCT)
Prior art keywords
abrasive
abrasive slurry
slurry
particles
binder precursor
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PCT/US2009/062013
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English (en)
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Olivier L. Guiselin
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Individual
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D11/00—Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
    • B24D11/001—Manufacture of flexible abrasive materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B37/00—Lapping machines or devices; Accessories
    • B24B37/11—Lapping tools
    • B24B37/20—Lapping pads for working plane surfaces
    • B24B37/24—Lapping pads for working plane surfaces characterised by the composition or properties of the pad materials
    • B24B37/245—Pads with fixed abrasives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/02—Emulsion paints including aerosols
    • C09D5/024—Emulsion paints including aerosols characterised by the additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/28—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for wrinkle, crackle, orange-peel, or similar decorative effects
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/67—Particle size smaller than 100 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/68—Particle size between 100-1000 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1454—Abrasive powders, suspensions and pastes for polishing
    • C09K3/1463—Aqueous liquid suspensions
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00—Materials not provided for elsewhere
    • C09K3/14—Anti-slip materials; Abrasives
    • C09K3/1454—Abrasive powders, suspensions and pastes for polishing
    • C09K3/1472—Non-aqueous liquid suspensions
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/10—Metal compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/02—Ingredients treated with inorganic substances
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances

Definitions

  • This invention relates to coated abrasives, and particularly to an abrasive slurry having a binder precursor in a discontinuous phase.
  • Coated abrasive articles for polishing or lapping applications are used to work a particulate abrasive material against the surface of a work-piece until the surface has a fine and well controlled finish.
  • most conventional coated abrasives are made by first applying a thin coating of adhesive 6 called a "make coat" to a flexible substrate 20 such as cloth, paper, or polyester film.
  • Abrasive particles 12 are then deposited via a process in which the particles are projected, e.g., electrostatically, onto the make coat. By using an electrostatic field, the particles may be oriented vertically, resulting in a product with a
  • a second binder coating 7, called a "size coat” is applied on top of the particles to firmly anchor the particles to the coated abrasives.
  • Lapping films are typically made by a slurry coating process. In this process, adhesive binder is dissolved in an organic solvent, blended with filler particles, and deposited as a slurry onto the substrate film 20. The solvent is evaporated, leaving behind the filler and adhesive, which is cured to form a solid coating.
  • the resulting coating 8 5 contains the abrasive particles 12 oriented in a random fashion, as shown in Fig. 2.
  • lapping films generally do not cut as aggressively as conventional coated abrasives, but they yield a relatively fine finish.
  • the specific requirements of a given grinding or finishing application dictate whether conventional coated abrasives or lapping films are used; in some cases, both types of o product are used.
  • conventional slurries 10 used to make lapping films typically consist of an adhesive dissolved in an organic solvent, forming a continuous phase 16, into which the abrasive particles 12 are blended.
  • a key drawback of such a system is that large amounts of solvent are required to dissolve the adhesive and to have a solution that5 is fluid enough to be coated. It is not unusual to have solvent-adhesive blends in which the adhesive comprises less than 15% by weight of the mix.
  • the abrasive slurry includes abrasive particles that form a discontinuous phase.
  • the continuous phase is a liquid 0 including an organic solvent such as various alcohols, glycol ethers, glycol ether acetates, lactates, hydrocarbons, ketones, ethers, acetates, methyl ethyl ketone (MEK) or toluene, and a binder precursor.
  • an organic solvent such as various alcohols, glycol ethers, glycol ether acetates, lactates, hydrocarbons, ketones, ethers, acetates, methyl ethyl ketone (MEK) or toluene, and a binder precursor.
  • polishing films according to US patent 6958082 are produced by applying a paint like material including ultra fine silica particles (20 nm), a conventional polyurethane or polyester resin binder precursor, and an organic solvent (MEK) on the surface of a plastic film and then drying it to form a polishing layer on the surface of 0 the plastic film.
  • a paint like material including ultra fine silica particles (20 nm), a conventional polyurethane or polyester resin binder precursor, and an organic solvent (MEK)
  • ⁇ K ( c M) 3 - 4 (Eq. 1) 0 where: ⁇ is the viscosity of the solution,
  • K is a constant
  • c is the concentration of the adhesive polymer in the solution
  • M is the molecular weight of the polymer 5
  • an abrasive slurry is configured to form an abrasive coating on a surface of a backing.
  • the abrasive slurry includes a continuous phase, a first discontinuous phase of abrasive particles dispersed in the continuous liquid phase, and a o second discontinuous phase of binder precursor particles dispersed in the continuous liquid phase, so that the continuous liquid phase carries the first and second discontinuous phases.
  • the continuous phase includes water.
  • a coated abrasive article includes a backing having a surface configured for being coated with an abrasive coating.
  • An abrasive coating is 5 disposed on the surface, formed from the abrasive slurry of the first aspect of the invention, or the variation thereof, as described above.
  • the coating includes a coalesced second discontinuous phase in the form of a solid continuous binder phase disposed about the abrasive particles of the first discontinuous phase.
  • a method of manufacturing a coated abrasive article includes providing a backing having a surface configured for being coated with an abrasive coating, and providing an abrasive slurry including a continuous liquid phase, a first discontinuous phase including abrasive particles dispersed in the continuous liquid phase, 5 and a second discontinuous phase including binder precursor particles dispersed in the continuous liquid phase.
  • the abrasive slurry is coated onto the surface of the backing, and the continuous phase is removed, such as by evaporation.
  • FIG. 1 is a cross-sectional schematic view of a coated abrasive product of the prior art
  • Fig. 2 is a cross-sectional schematic view of lapping film of the type produced by embodiments of the present invention
  • Fig. 3 is a schematic view of an abrasive slurry of the prior art
  • Fig. 4 is a schematic view of an embodiment of the abrasive slurry of the present 2 o invention
  • Fig. 5 is a schematic view, on an enlarged scale, of a portion of the abrasive slurry of Fig. 3;
  • Fig. 6 is a schematic view, on an enlarged scale, of a portion of the abrasive slurry of Fig. 4;
  • Fig. 7 is a graph of viscosity versus adhesive polymer concentration for the slurries of
  • coated abrasives adapted for polishing or lapping applications are conventionally derived from a slurry 10, which includes one discontinuous phase (abrasive particles) 12, which is carried by one liquid continuous phase
  • the liquid continuous phase includes a solvent and a resin or other binder precursor that is soluble in the solvent.
  • embodiments of the present invention include coated abrasive products for lapping or polishing applications derived from a slurry 100, which includes at least two discontinuous phases (the first discontinuous phase including abrasive
  • the liquid continuous phase 116 may be solvent-based, or in particular embodiments, is water-based. Aspects of the invention also include coated abrasives made using this slurry 100, and include methods of coating a substrate (backing) 20 using slurry 100.
  • the instant invention addresses the aforementioned drawbacks of conventional approaches by using a slurry in which the adhesive is dispersed (e.g., as a dispersion or emulsion) as a separate phase in the solvent.
  • a slurry in which the adhesive is dispersed (e.g., as a dispersion or emulsion) as a separate phase in the solvent.
  • Figs. 5 and 6 differences between the prior art system of Fig. 3, and the embodiment of Fig. 4, are shown at a molecular level.
  • Fig. 5 shows dissolved polymer strands 22 entangling with each other, causing the viscosity to rise
  • Fig. 6 shows the 5 discrete domains 114 of polymer groups having polymer strands 122 that have significantly less opportunity to entangle with strands 122 of other domains 114.
  • the graph of Fig. 7 compares the viscosity curves of the conventional system of Fig. 0 3, in which the adhesive is dissolved in the continuous solvent phase ( ⁇ l) and of the inventive system of Fig. 4, in which the adhesive is dispersed in discrete domains throughout the solvent phase ( ⁇ 2).
  • concentrations above 15% adhesive the viscosity of the conventional system is too high to be coated by the coating methods well known in the art (500,000 cP).
  • concentrations of 40% or more adhesive are viable.
  • embodiments of the present invention provide a system in which the adhesive is dispersed as 5 discrete domains (a "second discontinuous phase").
  • This approach permits the use of slurries having relatively high solids content (e.g., up to 40% or more) - and consequently significantly lower solvent content - while providing relatively broad formulation latitude by not being limited to adhesives having only relatively low-molecular weights.
  • Slurries of the present invention may be coated using substantially the same 0 process(es) as used to coat conventional slurries made with dissolved adhesive. Once coated, the product is dried to drive off the coating to permit the adhesive to coalesce to form a continuous coating. This drying may also include curing, such as in the event reactive materials are used, as discussed in greater detail hereinbelow.
  • water may be used as the continuous carrier5 phase, to provide the added benefit of having a coating free of organic solvent.
  • a small amount of co-solvent may be included to facilitate processing
  • This may substantially reduce or eliminate the health, safety, and environmental concerns commonly associated with conventional solvent-based systems, as discussed hereinabove.
  • the placement of the adhesive in a second discontinuous phase o also enables one to use relatively high molecular weight adhesives (binder precursors) that may substantially mitigate many of the drawbacks associated with the aforementioned conventional water-based systems.
  • Embodiments of the present invention also include coated abrasive articles for lapping or polishing applications, which are manufactured by coating the waterborne abrasive slurry of the invention onto a backing and drying/curing the slurry. 5 Embodiments also include methods of making the abrasive articles.
  • Binder refers to the composition which binds abrasive particles to a backing in the final product.
  • Binder precursor refers to the components of the binder as they exist in the slurry prior to drying and/or curing of the coating.
  • binder and “binder precursor” refer to 5 substantially any material capable of securing the abrasive particles to the backing, including adhesives, resins, polymers, oligomers, pre-polymers, glues, bonds, etc.
  • slurry or “abrasive slurry” refer to a coatable liquid composition that includes a liquid carrier, abrasive particles and binder precursor particles dispersed in the liquid carrier, and optionally additional additives.
  • surfactant refers to a surface active agent which migrates to o the interface between two phases.
  • dispenserant refers to a surfactant configured to disperse a discontinuous phase in a liquid carrier.
  • water-based and “waterborne” refer to a composition in which the liquid continuous phase comprises water as the primary constituent.
  • organic solvent refers to any liquid whose molecules comprises at least one carbon atom.
  • solvent-based refers to a composition in which the liquid5 continuous phase comprises organic solvents as primary constituents.
  • abrasive slurry base refers to an abrasive particle dispersion, which may include water or other solvents as the liquid carrier, and includes dispersed abrasive particles, and optionally additives such as for example, dispersants , foam control agents, inorganic pigments, inorganic fillers, adhesion promoters, viscosity modifiers, but little or no binder precursor o particles.
  • binder precursor liquid composition and "resin liquid composition” refer to a binder precursor dispersion, emulsion, or colloidal suspension with particles ranging in size from 5 nm to 50 microns and in either liquid or solid state.
  • the binder precursor liquid composition includes a liquid carrier such as water or other solvents, dispersed binder precursor particles, and optionally additives such as surfactants and/or 5 dispersants to stabilize the binder precursor particles, foam control agents, co-solvents, coalescing agents, organic pigments, and soluble adhesion promoters, but no abrasive particles.
  • a wide range of resin dispersions, emulsions, or colloidal suspensions may be used as the binder precursor liquid composition.
  • an abrasive slurry according to this invention include the following:
  • this phase may contain various additives which are soluble in water such as a small amount of co- solvent.
  • a first discontinuous phase formed by abrasive particles dispersed in the continuous phase may be used to properly disperse the abrasive particles in water.
  • This first discontinuous phase may also include fillers or secondary abrasive particles if necessary.
  • a second discontinuous phase made of binder precursor particles dispersed in the continuous phase.
  • Surfactants, charged polymer end groups, or polymeric dispersants may be used to stabilize the binder precursor particles in the continuous phase.
  • the binder precursor can be a reactive binder precursor such as thermosetting binders, crosslinking binders, and binders curable by an additional polymerization, or a non- reactive binder precursor such as a thermoplastic polymer that needs only drying, without additional reactive curing, to solidify.
  • Additional optional additives such as curing agents, coloring agents (e.g., pigments, dyes, etc.), wetting agents, foam control agents, water compatible adhesion promoters, viscosity modifiers, acids, bases, or buffers to control pH, film coalescing agents, antistatic agents, etc. may be incorporated into the slurry.
  • Additives such as dispersants, coupling agents, fillers, curing agents, hardening agents, photo-initiators, surfactants, wetting agents, coloring agents (e.g., pigments, dyes), anti- oxidants, antistatic agents, etc.
  • the water based slurry may be uniformly applied over a flexible backing 20 by a variety of methods, including gravure roll coating, curtain coating, slot die coating, knife coating, spray coating, or any other coating method known in the art, and then dried/cured.
  • Coated abrasives in accordance with the present invention have been found to have surprisingly good coating quality and performance for lapping or polishing applications.
  • the slurry of the invention is environmentally attractive and cost effective since: •
  • the waterborne process of the invention has relatively low VOC (Volatile Organic Compound) content.
  • the second discontinuous phase enables the use of high molecular weight resins without the adverse effects on viscosity as discussed hereinabove.
  • Embodiments of the present invention may be applied to substantially any type of0 backing (substrate) 20.
  • suitable backings include polymeric film, cloth, paper, nonwovens, open mesh, foams, metallic foil, and combinations thereof.
  • polymeric films include, but are not limited to, polyester, polyester and co-polyester, microvoided polyester films, PEN, polyimide films, polyamide films, polyvinyl alcohol films, polypropylene film, polyethylene film and the like.
  • a5 treatment may be applied to the backing/substrate 20 for better adhesion.
  • treatments include surface alterations such as corona treatment, UV treatment, electron beam treatment, flame treatment, scuffing, and primer coatings.
  • the backing 20 should be sufficiently strong to support the binder and abrasive particles. Additionally it should be sufficiently flexible to allow mounting on the surface of o the particular tool (e.g., polishing or lapping tool) of interest. Generally it is desirable that the backing be smooth and of uniform caliper in embodiments intended for finishing high precision articles.
  • Abrasive particles 5 A wide range of abrasive particles may be used in the various embodiments of present invention, and may be classified as follows:
  • Superabrasive particles such as natural diamond, synthetic diamond, and cubic boron nitride.
  • Hard abrasive particles such as aluminum oxide, heat treated aluminum oxide, white fused aluminum oxide, black silicon carbide, green silicon carbide, titanium diboride, boron carbide, tungsten carbide, titanium carbide, garnet, fused alumina zirconia, sol gel abrasive particles and the like.
  • Soft abrasive particles such as silica, silicates, iron oxide, zirconium oxide, titanium dioxide, and tin oxide.
  • Chemically reactive abrasive particles such as cerium oxide, rare earth compounds, zirconium oxide, chromium oxide, or mixtures thereof. It is believed that such chemically reactive abrasive particles may provide a chemo-mechanical element to o the polishing procedure. As used herein, chemo-mechanical refers to a dual mechanism where corrosion chemistry and fracture mechanics may both play a role in glass polishing. Chemically reactive abrasive particles may be especially useful in glass polishing operations.
  • the average size of the abrasive particles may vary between 5 nanometers and 2005 micrometers, and more typically, between 10 nanometers and 100 micrometers. In particular embodiments it may be desirable to use a relatively tightly graded particle size distribution, or use a blend of particle sizes, or a blend of particle types, or combinations thereof, to achieve particular finish or performance effects.
  • the surface treatment may be used to increase the adhesion to the binder and alter the abrading characteristics of the abrasive particles.
  • the first discontinuous phase may include aggregates of smaller primary abrasive particles.
  • binder precursors 5 In particular embodiments, the binder precursor particles 114 should be more than 5 nm in size (e.g., in their largest dimension). Generally, the binder precursor particles size is less than 50 microns, preferably less than 10 microns, and more preferably less than 2 microns. Specific examples of suitable binder precursor liquid compositions for this invention have a particle size between 50 and 500 nanometers.
  • the binder precursor particles 114 may include monomers, oligomers, pre-polymers, or polymers.
  • the binder precursor may be reactive and have functional groups such as vinyl, 5 alcohol, methylol, aldehyde, ketone, phenol, ester, epoxy, acyl halide, carboxylate, amide, amine, imine, nitrile, isocyanate, thiol, sulfonyl, acrylate, methacrylate, silanol, and any other functional group or combinations thereof used in the art.
  • functional groups such as vinyl, 5 alcohol, methylol, aldehyde, ketone, phenol, ester, epoxy, acyl halide, carboxylate, amide, amine, imine, nitrile, isocyanate, thiol, sulfonyl, acrylate, methacrylate, silanol, and any other functional group or combinations thereof used in the art.
  • binder precursor may also be a thermoplastic polymer.
  • the physical state of the binder precursor particles may be liquid or solid.
  • the binder o precursor particles may be prepared by emulsion polymerization, emulsification (e.g., using any number of conventional emulsifying agents), self-emulsification, dispersion, and related methods in the art.
  • emulsion generally refers to a system of non-soluble liquid droplets within a continuous liquid phase
  • dispenser generally refers to a system of solid particles in a liquid continuous phase
  • the term “emulsion”5 may also refer to a dispersion of solid particles produced by emulsion polymerization.
  • the terms “emulsion” and “dispersion” will be used interchangeably to refer to a system of either solid particles or liquid droplets in a continuous liquid phase.
  • the binder precursor may be dispersed in the continuous phase by means of a surfactant adsorbed from the surrounding continuous phase onto the surface of the binder o precursor particles or by means of a surfactant group grafted to or incorporated within the backbone of the polymer chains comprising the binder precursor.
  • a surfactant refers to the former type of surfactant (adsorbed to the surface of the particles) while the term “internal surfactant” refers to the latter type of surfactant (grafted to the backbone of the polymer). 5
  • a broad range of waterborne resin liquid compositions may be used as a liquid composition of binder precursor 114.
  • Resin liquid compositions are characterized by the size and morphology of the resin particles, the type of surfactants or dispersants used to stabilize the resin particles, the quantity of chemical reactive groups (i.e. acid number, epoxy number, hydroxyl number, 5 amine number), the molecular weight of the polymer inside the resin particle, the film forming temperature, the glass transition temperature of the polymer (Tg), the physical properties of the coating after drying (hardness, impact resistance, % elongation, modulus, tensile strength), their adhesion to various substrates, etc.
  • chemical reactive groups i.e. acid number, epoxy number, hydroxyl number, 5 amine number
  • Tg glass transition temperature of the polymer
  • Tg glass transition temperature of the polymer
  • the physical properties of the coating after drying hardness, impact resistance, % elongation, modulus, tensile strength
  • two or more resin compositions may be o blended together to achieve a desirable set of properties, for example hardness, Tg, or elongation.
  • the resin liquid composition may have a core-shell structure. Copolymers designed with a hard, glass like core and a soft rubbery shell will show a lower minimum film forming temperature at a comparable coalescent level than5 a physical blend of the same composition.
  • the use of a hydrophobic core and hydrophilic shell formed of alkaline soluble polymer chains modified with hydrophobic components to make them relatively highly surface active allows the production of surfactant free resin dispersion (AJP Buckmann et. al., "Self-Crosslinking Polymeric Dispersants and their Use in Emulsion Polymerization", presented at International 0 Waterborne, High Solids, and Powder Coatings Symposium, Symposium Sponsored by the
  • Some examples include commercially available acrylic dispersions (produced by emulsion polymerization) available from HEXION (under the trademark AQU AM ACTM), 5 LUBRIZOL ADVANCED MATERIAL Inc. (under the trademarks CARBOSET® and
  • HYCAR® DSM NEORESINS
  • NEOCRYL® DSM NEORESINS
  • REICHHOLD INC under the trademark AROLON®
  • BASF under the trademark ACRONAL®
  • Other examples include polyurethane dispersions from BAYER (under the trademark DISPERCOLL U), LUBRIZOL ADVANCED MATERIAL Inc. (under 0 the trademarks SANCURE®), DSM NEORESINS (under the trademark NEOREZ®),
  • urethane- acrylic copolymer dispersions and urethane- acrylic hybrid dispersions available from AIR PRODUCTS (under the trademark HYBRIDUR®), DSM NEORESINS (under the trademark NEOPAC®), and other 5 manufacturers worldwide.
  • suitable epoxy dispersions are available from HEXION (under the trademark EPIREZTM), and other manufacturers worldwide.
  • EPIREZTM HEXION
  • aqueous dispersion of a liquid Bisphenol A epoxy resin aqueous dispersion of a solid Bisphenol A epoxy resin, aqueous dispersion of an epoxidized o Bisphenol A novolac resin, aqueous dispersion of a urethane modified epoxy resin, aqueous dispersion of a butadiene- acrylonitrile modified epoxy resin, aqueous dispersion of an epoxidized o-cresylic novolac resin.
  • waterborne radiation curing resin dispersions from suppliers such as SARTOMER, UCB RADCURE, or INCOREZ may be suitable for this invention.
  • These5 resin dispersions include acrylate functional resins, which are dried prior to crosslinking by such means as electron beam, UV, or other suitable methods.
  • the resin dispersion includes inorganic particles, which are encapsulated in the resin particles or bound to the resin particles. These inorganic particles may act as fillers or abrasive particles. The introduction of these inorganic particles may be o made by the resin supplier during the emulsion polymerization process. Examples of inorganic / organic latex composites have been described in the scientific literature by (Adeline Perro et al, "Synthesis of Hybrid Colloids through the Growth of Polystyrene Latex Particles onto Methacryloxy methyl triethoxysilane - Functionalized Silica Particles" MRS Symposium Proceedings (2006). 5 Dispersants to disperse the abrasive particles
  • the abrasive particles are dispersed in a liquid carrier including water prior to the addition of the binder precursor.
  • a dispersant is desired to achieve abrasive particle dispersion, and prevent agglomeration and settling. This is usually accomplished by one or both of two mechanisms: electrostatic repulsion and/or 0 stearic hindrance.
  • a wide range of dispersants may be used depending on the type and size of the abrasive particles.
  • Anionic surfactants containing carboxylate, sulfonate, sulfate, phosphate, and/or phosphonate groups may be used.
  • 2-phosphonobutane 1,2,4 tricarboxylic acid tetrasodium salt (PBTC-Na4), or 4,5 dihydroxy-m-benzenedisulfonic acid disodium salt 5 (TIRON) may be used to disperse fine alumina powders in water as disclosed in patent EP 1529764.
  • Nonionic surfactants such as the large number of widely available adducts of ethylene oxide and block polymers of ethylene oxide and propylene oxide, may be used to disperse the abrasive particles.
  • Nonyl phenol ethoxylate is typical example of such 10 surfactants.
  • Polymeric dispersants have a significantly higher molecular weight than conventional dispersants.
  • Polymeric dispersant contains polymeric chains for stearic stability in solution, and pendant anchoring groups, which absorb onto the surface of the abrasive particles.
  • anionic polymeric dispersants with molecular weight higher than 15 500 and an acid value higher than 0 such as PAA (polyacrylic acid), or PCA (copolymer of phosphono & carboxylic acid), may be used to disperse the abrasive particles.
  • PAA polyacrylic acid
  • PCA copolymer of phosphono & carboxylic acid
  • Cationic surfactants or polymeric cationic dispersants may also be used to disperse the abrasive particles, provided that the resin dispersion is stabilized by nonionic surfactants or cationic surfactants. If the dispersant used to disperse the abrasive particles is not 2 o compatible with the resin dispersion, the abrasive slurry may agglomerate.
  • surfactants e.g., dispersants
  • dispersants may be used to disperse other discontinuous phase in the slurry, including fillers, pigments, and other additives not soluble in the continuous phase.
  • Curing agents cross-linking agents, and hardeners
  • curing agents may be used to enhance binder properties by chemically bonding polymer chains and forming a cross-linked network.
  • Appropriate curing agents for different resin systems are well-known in the industry. Suitable curing agents include, but are not limited to, the following, including combinations thereof: metal ion crosslinkers, amines, peroxides, aziridines, isocyanates, dicyandiamines,
  • a metal ion crosslinker such as BACOTE 20 from MEI CHEMICALS may be used to crosslink carboxyl or hydroxyl functional resins such as acrylic or urethane dispersions.
  • BACOTE 20 is an alkaline solution of stabilized ammonium zirconium carbonate containing anionic hydroxylated zirconium polymers. It is 5 believed that BACOTE 20 functions by the generation of cationic zirconium resulting from decomposition during drying.
  • a water dispersible aliphatic or aromatic polyisocyanate such as DESMODUR DN, DESMODUR DA-L, or BAYHYDRUR XP-7063 sold by BAYER, is combined with a hydroxyl-functional acrylic copolymer emulsion, a o hydroxyl-functional polyurethane dispersion, or an aliphatic polyester polyurethane dispersion.
  • a micronized grade of dicyandiamine such as DICY ANEX® 1400B from AIR PRODUCTS, an aqueous solution of 2-ethyl-4-methyl imidazole such as IMICURE EMI-24 from AIR PRODUCTS, 2-methylimidazole powder5 from BASF, a modified polyamidoamine adduct such as EPIKURETM 8536-MY-60 from HEXION, or a water dispersion of a modified polyamide adduct such as EPIKURETM 6870- W-53 from HEXION may be combined with a waterborne epoxy dispersion.
  • DICY ANEX® 1400B from AIR PRODUCTS
  • an aqueous solution of 2-ethyl-4-methyl imidazole such as IMICURE EMI-24 from AIR PRODUCTS
  • 2-methylimidazole powder5 2-methylimidazole powder5 from BASF
  • a modified polyamidoamine adduct such as EPI
  • a silane such as ⁇ -(3,4-Epoxycyclohexyl) ethyltriethoxysilane available from ACC SILICONES under the trademark SILQUEST 186 0 may be used to crosslink carboxyl functional latexes, urethane dispersions, urethane acrylic hybrid dispersions.
  • the epoxy portion of the molecule reacts with the matrix resin and the alkoxysilane portion crosslinks after hydrolysis by condensation, forming siloxane bonds.
  • crosslinking agents may be used. This may be desirable if two chemically different resin dispersions are used 5 such as for example an acrylic emulsion together with an epoxy dispersion.
  • a photo-initiator such as DURACURE 1173 or IRGACURE 651 from CIBA is combined with a waterborne radiation curable resin such as NEORAD NR-440 from DSM NEORESIN.
  • Coalescing agents and co-solvents 0 may include various coalescing agents and/or co- solvents to improve the coating quality and help the discontinuous binder precursor particles to coalesce into a continuous binder phase during drying.
  • Hydrophobic solvents such as ethylene glycol monobutyl ether, dipropylene glycol n-butyl ether, tripropylene glycol n-butyl ether, and 2 2 4 trimethyl 1 3 pentanediol monoisobutyrate, and 5 hydrophilic solvents such as N-methylpyrrolidone (NMP) are often used.
  • the continuous phase 116 in addition to water, may include various additives, such as foam control agents.
  • foam control agents such as foam control agents.
  • the presence of surfactants and chemical agitation under shear tends to facilitate the production of the binder precursor liquid composition o and/or the abrasive slurry.
  • this process may generate macro foam and/or micro foam due to entrapped air. Entrapped air/foam may cause various quality issues. Macro foam may lead to coating defects such as non uniform appearance, streaks, pinholes, while micro foam may generate micro pinholes in the coating.
  • Waterborne abrasive slurries are generally more sensitive to foam than solvent-based5 systems due to the presence of surfactants, dispersants, and wetting agents (discussed in greater detail hereinbelow) in the water.
  • solvent-based abrasive slurries the organic solvent often acts as an anti-foaming agent.
  • foam may be generated at each step of the production process due to mechanical agitation:
  • Air entrapment during the coating process (described hereinbelow) when the abrasive slurry 100 is applied on the backing 20 by roll coating, knife over roll coating, spray coating, or when the abrasive slurry is pumped or otherwise handled.
  • foam control agents are available for waterborne systems from many sources.
  • Foam control agents are sometimes called de-aerators, defoamers, or 5 anti-foaming agents.
  • foam control agents are proprietary blends of various ingredients such as water, mineral oils, fatty oils, vegetable oils, silicone oils, glycols, alcohols, hydrophobic silica derivatives, hydrophobic organic solids, surfactants, surface active compounds, and the like.
  • Foam control agents may also be based on low molecular weight surfactants.
  • a combination of two or more foam control agents may be used in the slurry base and/or the resin blend.
  • Wetting agents are surfactants commonly used to enhance wetting and minimize coating defects such as non-wets, fisheyes, craters, or dimples.
  • fluoro surfactants such as ZONYL and CAPSTONE from DUPONT and
  • NOVEC from 3M may be used to lower the surface tension of the abrasive slurry.
  • the abrasive slurry may be diluted by water or other solvents to adjust the solids loading of the abrasive slurry and thus control the 5 thickness of the abrasive coating after drying.
  • the use of rheology modifiers may be desired to prevent settling of the abrasive particles and to modify the rheology of the coating solution to optimize the coating conditions.
  • Rheology modifiers may be classified into several categories:
  • Associative thickeners These rheology modifiers are usually water soluble polymers o capped with water insoluble hydrophobic groups. The primary thickening mechanisms is due to intermolecular associations. This group includes the following:
  • o HASE hydrophobic ally modified alkali acrylic emulsions
  • o HEUR hydrophobically modified ethylene oxide urethane rheology modifiers
  • 5 o HEURASE hybrid HASE / HEUR rheology modifiers consisting of terpolymers of a carboxyl functional monomer, a water insoluble monomer, and a urethane exothylate monomer with a hydrophobic tail
  • o HEAT hydrophobically modified ethoxylated aminoplast thickeners
  • o HMHEC hydrophobically hydroxyethyl cellulosic thickeners.
  • Non associative thickeners that interact with the water phase This group includes cellulosic thickeners, and acrylics.
  • Cellulosic thickeners include methyl cellulose (MC), hydroxyethyl cellulose (HEC), ethyl hydroxyethyl cellulose (EHEC), hydroxypropyl cellulose (HPC), hydroxypropyl cellulose (HPC), hydroxypropyl cellulose (HPC), hydroxypropyl cellulose (MC), hydroxypropyl
  • HPMC methyl cellulose
  • HHEC hydrophobic ally hydroxyethyl cellulose
  • Acrylics include acid or salt forms of water-soluble acrylates, polyacrylic acids, and aramid pulp.
  • Clays include smectite clays such as bentonite, hectorite, or montmorillonite, o kaolin, mica, and attapulgite. Fumed silica is available in a wide variety of forms including hydrophobic ally treated versions using silanes, siloxanes, or silazanes.
  • rheology modifiers include castor oil derivatives, carboxylic acid derivatives, polyamides, and polysaccharides.
  • a low molecular weight acrylic copolymer5 offered at 100% solids and soluble in alkaline water sold by LUBRIZOL under the trademark CARBOSET® 515 is added to the abrasive slurry to promote dispersion, leveling, flow and adhesion.
  • AQUAFLOW® NLS-200 a hydrophobically modified polyacetal polyether from HERCULES INC is added to the o abrasive slurry to provide low to medium shear viscosity along with excellent flow and leveling.
  • a nonanionic associative thickener AQUAFLOW® NHS-300 may also be added to the abrasive slurry to increase high shear viscosity.
  • the abrasive slurry of this invention may further include water soluble adhesion 5 promoters such as silanes, zirconates or titanate coupling agents, antistatic agents, inorganic pigments such as TiO2, organic pigments, UV stabilizers, anti-oxidants, grinding aids, biocides, fluorescent additives, etc. The amounts of these materials are selected to provide the desired performance.
  • the abrasive slurry may also include fillers. Fillers are generally inorganic particles with a smaller particle size or a lower hardness than the abrasive particles. They can be used to modify the performance of the abrasive coating or reduce the raw material cost.
  • an abrasive slurry base is prepared by adding the abrasive particles 12 to liquid carrier, e.g., water, optionally with a dispersant, and/or a foam control agent. A conventional milling procedure may then be used to disperse the abrasive particles within the liquid carrier to form an abrasive slurry base .
  • liquid carrier e.g., water
  • dispersant e.g., water
  • a binder precursor liquid composition may be prepared separately, by mixing one or o more resin compositions with one or more of various additives such as anti-foaming agents, pigments, water soluble adhesion promoters, co-solvent(s), and dilution water.
  • the binder precursor liquid composition as well as the aforementioned additives may then be added to the abrasive slurry base to form the abrasive slurry of the invention.
  • a representative process for producing an embodiment of a coated abrasive product5 of the invention then includes the following:
  • an abrasive slurry 100 including a continuous liquid phase 116 (e.g., including water), a first discontinuous phase including abrasive particles 12 dispersed 0 in the continuous liquid phase, and a second discontinuous phase including binder precursor particles 114 dispersed in the continuous liquid phase;
  • a continuous liquid phase 116 e.g., including water
  • a first discontinuous phase including abrasive particles 12 dispersed 0 in the continuous liquid phase e.g., including water
  • a second discontinuous phase including binder precursor particles 114 dispersed in the continuous liquid phase
  • Coating the abrasive slurry onto at least one side of the backing 20 for example by spray coating, roll coating, gravure coating, offset gravure coating, reverse gravure coating, knife over roll coating, slot die coating, or curtain coating; 5 - Removing the liquid carrier in the continuous phase 116, e.g., by evaporation, e.g., by drying in an oven; and
  • an energy source such as hot air, e-beam, X-ray, UV light, infrared light, microwave, a combination thereof, or any other crosslinking method known in the art.
  • the mass (weight) ratio of abrasive particles to binder precursor should be between 0.07 and 11, more typically between 0.13 and 7, and even more preferably between 0.20 and 5.5.
  • the mass ratio of continuous phase to the sum of all discontinuous phases (abrasive, binder precursor, non-soluble additive, etc.) should be between 0.4 and 20, more typically between 0.6 and 12, and even more preferably between 0.8 and 7.
  • the slurry may be configured so that the coating on the finished abrasive article may include anywhere between 7% and 94% per weight of abrasive particles, and more typically, from 12% to 88% per weight of abrasive particles, and even more preferably from about 18% to about 85% per weight of abrasive particles.
  • the coated abrasive article may then be converted into various shapes such as discs, sheets, rolls, or other forms used in the art, such as discs laminated to pressure-sensitive adhesives, to meet customer requirements.
  • Example 1 lapping films with 0.3 micron aluminum oxide particles
  • TOSOH was put into a one gallon ball-milling jar. 1000 grams of an alumina powder (E-600) from Saint-Gobain having a particle size around 0.3 micron, 560 grams of de-ionized water, and 40 grams of DISPERBYK 190 were added to the milling jar. The mixture was milled for
  • Preparation of the abrasive slurry 11 15 50 grams of the binder precursor liquid composition and 51 grams of the abrasive slurry base were combined into a 200-ml beaker and stirred with a laboratory mixer for 5 minutes.
  • binder precursor liquid composition 12 50 grams was added to a 200-ml beaker and agitated with a laboratory mixer. 91 grams of the abrasive slurry base was added to the beaker and mixed for 5 minutes.
  • Coated abrasive sample preparation 25 The abrasive slurries 11 & 12 were coated on a 3 mil thick PET film using a #18 Meyer rod, and then dried and cured in an oven at 300°F for 100 minutes. Test method:
  • a 3M Auto Polisher 6850A machine was modified to hold l/8"-diameter rods in place of a fiber optic ferrule.
  • 4" discs of the products to be tested were punched from laboratory drawdowns and used as the test materials.
  • 1/8" acrylic rods were polished on the various 5 products.
  • the weight loss of the rod was measured every 30 seconds.
  • the downward pressure on the rod was 32 psi.
  • the surface speed of the rod on the test disc was 200 ft/minute.
  • the cumulative cut (milligrams) of the samples was measured and compared to that provided by commercial samples from 3M (3M Company).
  • the following table summarizes the i o cumulative cut (in milligrams) after 30, and 60 seconds of test. It shows that the examples 11 and 12 with abrasive particles of 0.3 ⁇ m have a higher cut rate than not only the comparative commercial sample with abrasive particles of 0.3 ⁇ m, but also the comparative commercial sample with abrasive particles of 0.5 ⁇ m, which is surprising.
  • Example 2 9 micron Aluminum oxide polishing film
  • the abrasive slurry was coated on a 3 mil thick PET film using a #30 Meyer rod, and then dried and cured in an oven at 300 0 F for 2 minutes.
  • the test method was the same as in example 1, except that the 1/8" acrylic rod was replaced by a 1/8" 304 stainless steel rod. The weight loss was measured every 4 minutes.
  • the performance of the new coated abrasive sample was compared to the comparative sample:
  • the cumulative cut (in milligrams) data summarized in the following table indicates that the polishing film sample #21 has a higher polishing rate than the comparative sample with the same grit size.
  • Example 3 30 micron Aluminum oxide polishing film Preparation of the abrasive slurry base:
  • abrasive slurry 5 100 grams of the abrasive slurry base was combined with 41 grams of the binder precursor liquid composition, 0.13 grams of Zonyl FSO, 2.7 gram of water, 2.2 grams of ACRYSOL
  • the abrasive slurry was coated on a 3 mil thick PET film using a #42 Meyer rod, dried in an oven at 300 0 F for 2 minutes, and then post cured in an oven at 300 0 F for 12 hours.
  • test method was the same as in example 1, except that the 1/8" acrylic rod was replaced by a 1/8" 304 stainless steel rod. The weight loss was measured every 4 minutes. The5 performance of the new coated abrasive sample was compared to the comparative sample:
  • the cumulative cut (in milligrams) data summarized in the following table indicates that the polishing film sample #31 has a higher polishing rate than the comparative sample with the same grit size.
  • Example 4 9 micron diamond polishing film Preparation of the abrasive slurry base:
  • abrasive slurry base 100 grams were combined with 73 grams of the binder precursor liquid composition, 0.5 grams Zonyl FSO, 80 grams water, 4.9 grams ACRYSOL ASE, 11.5 parts grams 10% ammonia solution, and 2.0 grams NEOCRYL curing agent under gentle0 agitation.
  • the resulting abrasive slurry was then mixed with a laboratory mixer for one hour.
  • Coated abrasive article sample preparation 100 grams of the abrasive slurry base were combined with 73 grams of the binder precursor liquid composition, 0.5 grams Zonyl FSO, 80 grams water, 4.9 grams ACRYSOL ASE, 11.5 parts grams 10% ammonia solution, and 2.0 grams NEOCRYL curing agent under gentle0 agitation.
  • the resulting abrasive slurry was then mixed with a laboratory mixer for one hour.
  • the abrasive slurry was coated on a 3 mil thick PET film using a #30 Meyer rod, dried in an oven at 300 0 F for 2 minutes, and then post cured in an oven at 300 0 F for 12 hours.
  • the test method was the same as in example 1, except that the 1/8" acrylic rod was replaced5 by a 1/8" rod of zirconia ceramic.
  • the weight loss was measured after 8 minutes.
  • the performance of the new coated abrasive sample was compared to the comparative samples: 3M 662 - 9um from 3M and the comparative sample Mipox - 9um from MIPOX (Nihon Micro Coating Co., Ltd), hi addition the surface finish of the polished surface was measured after the test was completed.
  • Example 5 3 micron silicon carbide lapping film Preparation of the abrasive slurry base
  • the abrasive slurry was coated on a 3 mil thick PET film using a #30 Meyer rod, dried in an oven at 300 0 F for 2 minutes, and then post cured in an oven at 300 0 F for 12 hours.
  • the test method was the same as in example 1, except that the 1/8" acrylic rod was replaced 0 by a 1/8" rod of stainless steel 304.
  • the weight loss was measured every 2 minutes.
  • the performance of the new coated abrasive sample was compared to the comparative sample: 3M 463X - 3 ⁇ m from 3M.
  • the cumulative cut (in milligrams) are summarized in the following table. They indicate that the polishing film sample #51 has surprisingly a better polishing rate than the comparative5 samples with a same grit size.
  • abrasive slurry base 100 grams was combined with 39 grams of the binder precursor liquid composition, 185 grams water, 2.1 grams Zonyl FSO, 5.2 grams ACRYSOL ASE,
  • the abrasive slurry was coated on a 3 mil thick PET film using a #30 Meyer rod, dried in an oven at 300 0 F for 2 minutes, and then post cured in an oven at 300 0 F for 12 hours.
  • the coated abrasive sample had an abrasive content of approximately 67 % per weight after curing.
  • the test method was the same as in example 1, except that the 1/8" acrylic rod was replaced by a 304 stainless steel 1/8" rod. The weight loss was measured every 2 minutes.
  • the performance of the new coated abrasive sample was compared to the comparative sample:
  • the cumulative cut (in milligrams) are summarized in the following table. They indicate that the polishing film sample #61 has a much higher polishing rate than the comparative sample.

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Abstract

L'invention porte sur une suspension abrasive, sur un article abrasif et sur un procédé pour former un revêtement abrasif sur une surface d'un support. La suspension abrasive comprend une phase continue, une première phase discontinue de particules abrasives dispersées dans la phase liquide continue, et une seconde phase discontinue de particules de précurseur de liant dispersées dans la phase liquide continue, de telle sorte que la phase liquide continue porte les première et seconde phases discontinues. Un article abrasif revêtu est formé par dépôt de la suspension abrasive sur la surface du support, puis retrait de la phase continue.
PCT/US2009/062013 2008-11-04 2009-10-26 Article abrasif revêtu pour applications de polissage ou de rodage et système et procédé pour sa production Ceased WO2010053729A1 (fr)

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EP2915854A1 (fr) * 2014-03-06 2015-09-09 MTU Aero Engines GmbH Couche antigel pour aubes de compresseur
EP2889338A4 (fr) * 2012-08-27 2016-01-06 Ibiden Co Ltd Peinture pour composant de système d'échappement et composant de système d'échappement
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WO2017156069A1 (fr) * 2016-03-08 2017-09-14 Arcanum Alloys, Inc. Procédés d'application d'un revêtement métallique
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US9701850B2 (en) 2012-06-19 2017-07-11 3M Innovative Properties Company Coating compositions comprising polymerizable non-ionic surfactant exhibiting reduced fingerprint visibility
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EP2915854A1 (fr) * 2014-03-06 2015-09-09 MTU Aero Engines GmbH Couche antigel pour aubes de compresseur
US10876198B2 (en) 2015-02-10 2020-12-29 Arcanum Alloys, Inc. Methods and systems for slurry coating
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WO2017156069A1 (fr) * 2016-03-08 2017-09-14 Arcanum Alloys, Inc. Procédés d'application d'un revêtement métallique
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CN108373713A (zh) * 2016-10-21 2018-08-07 罗门哈斯公司 深色基础涂料调配物
US10563072B2 (en) 2016-10-21 2020-02-18 Rohm And Haas Company Deep base paint formulation
EP3312245A1 (fr) * 2016-10-21 2018-04-25 Rohm and Haas Company Formulation pour peinture de base profonde
CN108373713B (zh) * 2016-10-21 2020-09-01 罗门哈斯公司 深色基础涂料调配物
IT201700039495A1 (it) * 2017-04-10 2018-10-10 Biffignandi S P A Processo per produrre un articolo abrasivo flessibile, l’articolo abrasivo ottenuto e una sospensione acquosa utilizzata in tale processo
EP3398718A3 (fr) * 2017-04-10 2019-01-09 Biffignandi S.P.A. Procédé de fabrication d'un article abrasif flexible, article ainsi obtenu et solution aqueuse appropriée pour ce procédé
WO2019014050A1 (fr) * 2017-07-14 2019-01-17 3M Innovative Properties Company Article abrasif comprenant un matériau de solubilisation dans l'eau anionique et son procédé de fabrication
CN110869167A (zh) * 2017-07-14 2020-03-06 3M创新有限公司 具有水增溶性阴离子材料的磨料制品及其制造方法
US11642756B2 (en) 2017-07-14 2023-05-09 3M Innovative Properties Company Abrasive article with anionic water solubilizing material and method of making
WO2020190238A3 (fr) * 2019-03-15 2021-04-29 Cukurova Kimya Endustrisi A.S. Résine pour matériaux abrasifs et procédé de production de celle-ci
WO2021005533A1 (fr) * 2019-07-08 2021-01-14 3M Innovative Properties Company Fluide de nettoyage et de polissage et son procédé d'utilisation
US12467018B2 (en) 2019-07-08 2025-11-11 3M Innovative Properties Company Cleaning and polishing fluid and method of using
CN112951477A (zh) * 2021-01-18 2021-06-11 成都宏科电子科技有限公司 用于白色氧化铝多层陶瓷基板印刷的钨浆料及其制备方法
CN112951477B (zh) * 2021-01-18 2022-08-12 成都宏科电子科技有限公司 用于白色氧化铝多层陶瓷基板印刷的钨浆料及其制备方法
CN114806502A (zh) * 2022-04-29 2022-07-29 河南创研新材料科技有限公司 一种碳化硅晶片加工用研磨液及其制备方法
CN114806502B (zh) * 2022-04-29 2023-08-29 河南创研新材料科技有限公司 一种碳化硅晶片加工用研磨液及其制备方法

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