EP2052001A1 - Plastisols à base d'un polymère mixte de méthacrylate de méthyle - Google Patents

Plastisols à base d'un polymère mixte de méthacrylate de méthyle

Info

Publication number
EP2052001A1
EP2052001A1 EP07730144A EP07730144A EP2052001A1 EP 2052001 A1 EP2052001 A1 EP 2052001A1 EP 07730144 A EP07730144 A EP 07730144A EP 07730144 A EP07730144 A EP 07730144A EP 2052001 A1 EP2052001 A1 EP 2052001A1
Authority
EP
European Patent Office
Prior art keywords
binder
plastisols
weight
preparation
plastisol
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07730144A
Other languages
German (de)
English (en)
Inventor
Jan Hendrik Schattka
Gerd LÖHDEN
Winfried Belzner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roehm GmbH Darmstadt
Original Assignee
Evonik Roehm GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Evonik Roehm GmbH filed Critical Evonik Roehm GmbH
Publication of EP2052001A1 publication Critical patent/EP2052001A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/04—Acids, Metal salts or ammonium salts thereof
    • C08F20/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium
    • C08F2/22—Emulsion polymerisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F20/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide or nitrile thereof
    • C08F20/02—Monocarboxylic acids having less than ten carbon atoms, Derivatives thereof
    • C08F20/10—Esters
    • 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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/02—Homopolymers or copolymers of acids; Metal or ammonium salts thereof
    • 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
    • C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
    • C09D133/04—Homopolymers or copolymers of esters
    • C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/16—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms
    • C08F220/18—Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
    • C08F220/1804—C4-(meth)acrylate, e.g. butyl (meth)acrylate, isobutyl (meth)acrylate or tert-butyl (meth)acrylate

Definitions

  • the invention relates to plastisol systems with improved adhesion and lower water absorption.
  • Piastisols are generally understood to mean dispersions of finely divided plastic powders in plasticizers which gel when heated to higher temperatures, i. Harden.
  • the plastisols or organosols thus obtained are used for a variety of purposes, in particular as a sealant and sound insulation, as a motor vehicle underbody protection, as corrosion protection coatings for metals, as a coating of sheet metal strips (coil coating), for impregnating and coating substrates made of textile materials and Paper (including, for example, carpet backing coatings), as floor coatings, as finishing compounds for floor coatings, for artificial leather, as cable insulation and much more.
  • plastisols An important application of plastisols is the protection of body panels on the underbody of motor vehicles against stone chipping. In this application, particularly high demands are placed on the plastisol pastes and the gelled films. Naturally, a high mechanical resistance to abrasion caused by rockfall is essential. Furthermore, as long as possible usability of plastisol pastes (storage stability) is also essential in the automotive industry.
  • the plastisol pastes must not tend to absorb water, because before the gelation absorbed water evaporates at high temperatures during gelation and leads to undesirable bubble formation. Furthermore, the plastisol films have a good adhesion to the substrate (usually KTL sheet), which is not only an important prerequisite for the abrasion properties, but also essential for corrosion protection.
  • PVC polyvinyl chloride
  • Piastisols based on PVC show good properties and are also relatively cheap, which is the main reason for their still widespread use.
  • DE 4130834 describes a plastisol system with improved adhesion to cataphoresis sheet based on polyacrylic (meth) acrylates, wherein the binder contains an acid anhydride in addition to monomers having an alkyl substituent of 2-12 carbon atoms.
  • adhesion promoters are blocked isocyanates, which are mostly used in conjunction with amine derivatives as curing agents (examples mentioned may be EP 214495, DE 3442646, DE 3913807).
  • the object was to provide poly (meth) acrylate plastisols with good adhesion.
  • the measure to improve the adhesion should be able to be applied in parallel with the methods already used so that it can be used immediately without the development of new formulations.
  • the task was to reduce the water absorption of the ungelled Plastisolpaste.
  • the object was achieved with plastisols based on a binder, characterized in that
  • the binder is prepared by emulsion polymerization
  • b) more than 50% by weight of the monomers from which the binder is applied are selected from the group consisting of acrylic acid, esters of acrylic acid, methacrylic acid and esters of methacrylic acid, and
  • the emulsifier used to prepare the binder has at least one sulfate group
  • the amount of adhesion promoter used can be significantly reduced. Depending on the application, even a complete waiver of additional adhesion promoter is possible.
  • the notation (meth) acrylate as used herein means both methacrylate, e.g. Methyl methacrylate, ethyl methacrylate, etc., as well as acrylate, e.g. Methyl acrylate, ethyl acrylate, etc.
  • latices is meant here dispersions of polymer particles in water which are obtained by emulsion polymerization.
  • primary particles is meant here the particles present after the emulsion polymerization in the resulting dispersion (latex).
  • second particles is meant herein the particles obtained by drying the dispersions (latexes) obtained in the emulsion polymerization.
  • secondary particles generally contain many agglomerated primary particles.
  • the preparation of the binders which are suitable for formulating the plastisols according to the invention is carried out by emulsion polymerization, which may optionally be carried out in several stages.
  • the emulsion polymerization it is advantageous to use the emulsion or monomer feed process, in which case a portion of the water and the total amount or proportions of the initiator and the emulsifier are initially charged.
  • the particle size can be controlled in these methods, for example, by the amount of the emulsifier presented or by the addition of a defined amount of prefabricated particles (a so-called seed latex).
  • initiator in addition to the customary in the emulsion polymerization compounds such.
  • peroxy compounds such as hydrogen peroxide, ammonium peroxydisulfate (APS) and redox systems such as sodium disulfite APS iron and water-soluble azo starter can be used.
  • the amount of initiator is generally from 0.01 to 0.5 wt.%, Based on the polymer.
  • the polymerization temperature depends within certain limits on the initiators. When using APS, it is advantageous to work in the range from 60 to 90 ° C. When redox systems are used, it is also possible to polymerize at lower temperatures, for example at 30 ° C.
  • feed polymerization can also be carried out by the process of batch polymerization.
  • the total amount or a proportion of the monomers is initially charged with all auxiliaries and the polymerization is started.
  • the monomer-water ratio must be adapted to the released heat of reaction. In general, no difficulties arise when a 50% emulsion is produced by first emulsifying the adhesion of the monomers and the auxiliaries in the total amount of water and then initiating the polymerization at room temperature and after the reaction has cooled the mixture and added the remaining adhesion of the monomers together with the excipients.
  • Emulsion polymerization is introduced into the reactor in a reactor of water (and usually an emulsifier or a seed latex), which is based on a specific
  • Starting temperature which is usually between 50 and 100 0 C (preferably between 70 and 95 ° C), is heated.
  • an initiator or an initiator solution
  • a monomer emulsion prepared from monomers, water and emulsifiers
  • a monomer mixture without water, but optionally with emulsifiers
  • Monomer emulsion or the monomer mixture are metered into the reactor. After the addition of initiator is then waited until based on the rising temperature in the
  • Reactor is the start of the polymerization can be seen and only then with the
  • temperature control e.g., water bath temperature
  • Process temperature remains in the selected temperature range. This in turn depends on the choice of monomers and the initiator, may be different in the different stages and is usually between 50 and
  • polymerization of a monomer mixture A and subsequent polymerization of a monomer mixture B can produce primary particles in which the polymers produced in the second step envelop the polymer particles obtained in the first step.
  • the structure of the copolymers of a core material and a shell material is obtained in a conventional manner by a specific procedure in the emulsion polymerization.
  • the monomers forming the core material are polymerized in aqueous emulsion in the first stage of the process.
  • the monomer components of the shell material are added to the emulsion polymer under conditions such that the formation of new particles is avoided.
  • the polymer formed in the second stage is stored cup-shaped around the core material.
  • three or more different monomer mixtures A, B, C,... can also be polymerized one after the other.
  • adjacent layers are expediently made up of polymers with different monomer compositions.
  • non-adjacent layers may well be constructed of polymers having the same monomer composition.
  • the binder may be composed of primary particles containing both regions of homogeneous monomer composition and regions of gradient-changing monomer composition.
  • these particular structures may be of benefit to the product properties and, therefore, plastisols from binders whose primary particles have a construction made possible by one of the embodiments of emulsion polymerization - and especially semicontinuous emulsion polymerization - constitute a particular embodiment of the invention.
  • the primary particles obtained by these methods typically have an average particle size of 200 to 1200 nm, e.g. can be determined by laser diffraction. Preference is given to primary particle sizes of 500 to 1000 nm; Particular preference is given to primary particle sizes of 600 to 800 nm.
  • the binders suitable for preparing the plastisols according to the invention preferably contain 40-98% by weight of methyl methacrylate, preferably 50-88% by weight of methyl methacrylate; particularly preferred are 60-78% by weight of methyl methacrylate.
  • the binders suitable for preparing the plastisols of the invention preferably contain 0-60% by weight, and more preferably 15-50% by weight of other alkyl esters of methacrylic acid, such as ethyl methacrylate, n-propyl methacrylate, i-propyl methacrylate, n-butyl methacrylate, i Butyl methacrylate, t-butyl methacrylate, pentyl methacrylate, hexyl methacrylate, cyclo-hexyl methacrylate, or others, and mixtures thereof. Particularly preferred are 25-40 wt.%.
  • the binders suitable for preparing the plastisols according to the invention may preferably be from 0 to 30% by weight, preferably up to 20% by weight, of alkyl esters of Acrylic acid; Examples are methyl acrylate, ethyl acrylate, butyl acrylate and others, as well as mixtures thereof. Particularly preferred are 0-10 wt.%.
  • the binders which are suitable for the preparation of the plastisols according to the invention may preferably contain 0-10% by weight of acid-containing monomers and / or monomers having an acid amide group.
  • Such monomers include, for example, acrylic acid, methacrylic acid, itaconic acid, maleic acid, fumaric acid, 2-propene-1-sulfonic acid, styrenesulfonic acid, acrylamidododecanesulfonic acid, acrylamide, methacrylamide, and others, as well as mixtures thereof.
  • Particular preference is given to 0.1-5% by weight, with particular preference being given to 0.3-3% by weight of acid-containing monomers and / or monomers having an acid amide group.
  • These acids and / or acid amides are preferably free-radically copolymerizable with the monomers mentioned under a), b) and c).
  • the binders suitable for the preparation of the plastisols according to the invention contain from 0 to 30% by weight, preferably from 0.5 to 15% by weight, of other monomers which are copolymerisable with the abovementioned monomers.
  • monomers are, for example, styrene, ethene, propene, n-butene, i-butene, n-pentene, i-pentene, n-hexene, divinylbenzene, ethylene glycol dimethacrylate, hydroxyethyl methacrylate, 9-vinylcarbazole, vinylimidazole, 3-vinylcarbazole, 4-vinylcarbazole , Vinyloxolane, vinylfuran, vinylthiophene, vinylthiolane, glycidylmethacrylate, 2-ethoxyethylmethacrylate, tetrahydrofurfurylmethacrylate and others, and mixtures thereof.
  • the stated percentages by weight relate in each case to the entire primary particle of the binder.
  • the compositions of the individual shells and the core may well deviate from the stated limits; However, based on the total particle the stated limits correspond to a preferred embodiment of the invention.
  • the use of a surfactant is required; According to the invention, this surfactant contains at least one sulfate group.
  • the emulsifier used to prepare the binder is composed of (a) a sulfate group, (b) a branched or unbranched or cyclic alkyl group having more than 8 carbon atoms, and (c) optionally ethylene glycol, diethylene glycol, triethylene glycol or a higher molecular weight polyethylene glycol unit ,
  • alkyl sulfates are used.
  • emulsifiers which consist chemically of only one type of molecule, such as "Nathum-n-hexadecylsulfate".
  • the alkyl radical consists only of an unbranched hexadecyl radical.
  • Further examples are sodium n-octyl sulfate, sodium n-decyl sulfate, sodium n-dodecyl sulfate, nathum n-hexadecyl sulfate, sodium 2-ethylhexyl sulfate, sodium n-octadecyl sulfate.
  • C16-C18 sulfates This surfactant consists of various alkyl sulfates having 16 to 18 carbon atoms, the composition of which depends on the raw material used. In addition, depending on their purity, such surfactants may also be "contaminated” with shorter or longer-chain alkyl sulfates.
  • alkyl radicals having more than 8 carbon atoms Particular preference is given to emulsifiers whose alkyl radicals are predominantly C 12 -C 14 -alkyl radicals.
  • surfactants are used which have one or more units of ethylene oxide (-CH 2 -CH 2 -O-) between the alkyl group and the sulfate group. These are also referred to as fatty alcohol polyethylene glycol ether sulfates. Examples of this are
  • Preference is given to 2 to 8 ethylene oxide units.
  • Emulsion polymerization gives latices containing the binders as a dispersion in water.
  • the recovery of the binders in solid form may be carried out in a conventional manner by freeze-drying, precipitation or, preferably, spray-drying.
  • the spray drying of the dispersions can be carried out in a known manner.
  • Large-scale so-called spray towers are used, which are usually flowed through in direct current with the sprayed dispersion from top to bottom with hot air.
  • the dispersion is sprayed through one or many nozzles or preferably atomized by means of a rapidly rotating perforated disk.
  • the incoming hot air has a temperature of 100 to 250, preferably 150 - 250 0 C.
  • the outlet temperature of the air is critical, ie the temperature at which the dried powder granules at the bottom of the spray tower or in a cyclone from be separated from the airflow.
  • this temperature should be below the temperature at which the emulsion polymer would sinter or melt.
  • an outlet temperature of 50-95 0 C is well suited; outlet temperatures between 70 and 90 ° C. are preferred.
  • the outlet temperature can be controlled at a constant air flow by varying the amount of dispersion continuously sprayed per unit time.
  • Preferred secondary particle sizes are 20 to 120 ⁇ m; Particularly preferred secondary particle sizes are 40 to 80 ⁇ m.
  • the proportions in plastisol pastes can vary within wide limits.
  • the plasticizers are contained in proportions of 50 to 300 parts by weight, per 100 parts by weight of the binder.
  • solvents such as hydrocarbons
  • the plasticizers used are, for example, the following substances:
  • Esters of phthalic acid e.g. Diundecyl phthalate, diisodecyl phthalate, diisononyl phthalate, dioctyl phthalate, diethylhexyl phthalate, di-C7-C11 n-alkyl phthalate, dibutyl phthalate, diisobutyl phthalate, dicyclohexyl phthalate, dimethyl phthalate, diethyl phthalate, benzyloctyl phthalate, butyl benzyl phthalate, dibenzyl phthalate and tricresyl phosphate, dihexyl dicapryl phthalate.
  • Hydroxycarboxylic acid esters for example esters of citric acid (for example tributyl O-acetyl citrate, triethyl O-acetyl citrate), esters of tartaric acid or esters of lactic acid.
  • Aliphatic dicarboxylic acid esters for example esters of adipic acid (for example dioctyl adipate, diisodecyl adipate), esters of sebacic acid (for example dibutyl sebacate, dioctyl sebacate, bis (2-ethylhexyl) sebacate) or esters of azelaic acid.
  • Esters of trimellitic acid e.g. Tris (2-ethylhexyl) trimellitate.
  • Esters of benzoic acid e.g. benzyl benzoate
  • - esters of phosphoric acid e.g. Tricresyl phosphate, triphenyl phosphate, diphenyl cresyl phosphate, diphenyl octyl phosphate, tris (2-ethylhexyl) phosphate, tris (2-butoxyethyl) phosphate.
  • plasticizers are used individually or as a mixture.
  • phthalates Preference is given to using phthalates, adipates, phosphates or citrates; phthalates being particularly preferred.
  • the plastisols usually still contain inorganic fillers in amounts of 0-300 parts by weight. Mention may be made, for example, calcium carbonate (chalk), titanium dioxide, calcium oxide, precipitated and coated chalks as theologically effective additives, and optionally also thixotropic agents such as. As fumed silica.
  • inorganic fillers for example, calcium carbonate (chalk), titanium dioxide, calcium oxide, precipitated and coated chalks as theologically effective additives, and optionally also thixotropic agents such as. As fumed silica.
  • the plastisol also adhesion promoters are added in amounts of 40-120 parts by weight; For example, polyaminoamides or blocked isocyanates are used.
  • Self-crosslinking blocked isocyanates as effective adhesion promoters for use in the field of poly (meth) acrylate plastisols are described, for example, in EP 1371674.
  • the plastisols may contain other plastisol-customary constituents (auxiliaries), such as wetting agents, stabilizers, leveling agents, pigments, propellants.
  • the mixture of the components for the plastisols according to the invention can be carried out with various mixers.
  • low speed planetary agitators, high speed mixers or dissolvers, horizontal turbomixers and three roll mills are preferred; the choice being influenced by the viscosity of the plastisols produced.
  • the plastisol composition may typically be in a layer thickness from 0.05 to 5 mm at temperatures of 100-220 0 C (preferably 120 to 180 0 C) in less than 30 minutes to gel.
  • the plastisol is usually processed at high pressures (about 300 - 400 bar) via airless spray guns.
  • the procedure is usually such that the plastisol is applied after the electrocoating of the bodywork and drying has taken place.
  • the thermal curing is usually done in a heating oven (eg convection oven) at usual residence times - depending on the temperature in the range 10 - 30 minutes and temperatures between 100 and 200 0 C, preferably 120 - 160 0 C.
  • the cataphoretic coating of metallic substrates has been described many times (see DE-A 27 51 498, DE-A 27 53 861, DE-A 27 32 736, DE-A 27 33 188, DE-A 28 33 786).
  • the plastisols according to the invention can be used for seam coverage. Furthermore, such plastisols can be used to protect the underbody of automobiles (eg against falling rocks). In addition, there are applications in acoustic noise attenuation, e.g. in the automotive industry and household appliances (such as refrigerators and washing machines).
  • a monomer emulsion consisting of 500 g of methyl methacrylate, 250 g of isobutyl methacrylate and 250 g of n-butyl methacrylate, and 8 g of sodium dodecyl sulfate and 450 ml of deionized water, added dropwise.
  • a second monomer emulsion consisting of 700 g of methyl methacrylate, 130 g of isobutyl methacrylate, 130 g of n-butyl methacrylate, 40 g of methacrylamide and 8 g of sodium dodecyl sulfate and 450 ml of deionized water is added within one hour.
  • An increase in the reaction temperature above 80 0 C is avoided by Wasserbadkühlung.
  • Comparative Example 1 For the preparation of Comparative Example 1 was with one exception in all points as in the preparation of Example 1 procedure. Only the emulsifier sodium dodecyl sulfate was replaced in each case by the identical amount of the emulsifier sulfosuccinic acid bis-2-ethylhexyl ester (sodium salt).
  • the plastisol paste for assessing water absorption is produced in a dissolver analogous to the method specified in DIN 11468 for polyvinyl chloride pastes.
  • binder 100 parts by weight of binder (core / shell polymer)
  • plasticizer diisononyl phthalate
  • the evaluation of the water absorption was qualitatively based on the optical evaluation of the film surface; high water uptake was evident in bumps and blisters, while good samples had a smooth, defect-free surface.
  • the binder according to Example 1 showed significantly fewer bubbles than that prepared according to Comparative Example 1 in this test.
  • a count of bubbles on a given area A resulted in 30% to 40% fewer bubbles in the plastisol from the binder of Example 1; the bubbles were also smaller.
  • the plastisol paste prepared as described above was applied in wedge shape to a KTL sheet with an adjustable doctor blade (gap width 0 to 3.0 mm). Curing takes place at 160 ° C for 20 minutes.
  • the gelled plastisol film (wedge) is cut parallel to the layer thickness gradient with a sharp blade at 1 cm intervals down to the KTL substrate.
  • the thickness of the film at the location of the film break is used, where a small film thickness corresponds to a good adhesion.
  • the film thickness at the break-off point is determined with a layer thickness gauge.
  • a tear-off thickness of 210 ⁇ m was determined according to the above test; the adhesion of the plastisol prepared with Example 1 was markedly better: a tear-off thickness of 60 ⁇ m was measured.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paints Or Removers (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

L'invention concerne des systèmes de plastisol présentant une adhérence améliorée et une plus faible absorption d'eau.
EP07730144A 2006-08-18 2007-06-14 Plastisols à base d'un polymère mixte de méthacrylate de méthyle Withdrawn EP2052001A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006038715A DE102006038715A1 (de) 2006-08-18 2006-08-18 Plastisole auf Basis eines Methylmethacrylat-Mischpolymerisats
PCT/EP2007/055861 WO2008019899A1 (fr) 2006-08-18 2007-06-14 Plastisols à base d'un polymère mixte de méthacrylate de méthyle

Publications (1)

Publication Number Publication Date
EP2052001A1 true EP2052001A1 (fr) 2009-04-29

Family

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Application Number Title Priority Date Filing Date
EP07730144A Withdrawn EP2052001A1 (fr) 2006-08-18 2007-06-14 Plastisols à base d'un polymère mixte de méthacrylate de méthyle

Country Status (11)

Country Link
US (1) US20090292066A1 (fr)
EP (1) EP2052001A1 (fr)
JP (1) JP2010501041A (fr)
KR (1) KR20090040441A (fr)
CN (1) CN101490114A (fr)
BR (1) BRPI0716061A2 (fr)
CA (1) CA2666115A1 (fr)
DE (1) DE102006038715A1 (fr)
MX (1) MX2009001596A (fr)
RU (1) RU2009109579A (fr)
WO (1) WO2008019899A1 (fr)

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
JP5688879B2 (ja) * 2009-02-06 2015-03-25 アイシン化工株式会社 接着組成物
DE102009028976A1 (de) * 2009-08-28 2011-03-03 Evonik Oxeno Gmbh Ester der 2,5-Furandicarbonsäure mit isomeren Decanolen und ihre Verwendung
US8653171B2 (en) * 2010-02-22 2014-02-18 Polyone Corporation Plastisol compositions that are essentially free of polyvinyl halides and phthalates
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WO2008019899A1 (fr) 2008-02-21
BRPI0716061A2 (pt) 2013-02-19
JP2010501041A (ja) 2010-01-14
RU2009109579A (ru) 2010-09-27
US20090292066A1 (en) 2009-11-26
KR20090040441A (ko) 2009-04-24
MX2009001596A (es) 2009-02-23
CA2666115A1 (fr) 2008-02-21
DE102006038715A1 (de) 2008-02-21

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