EP4457258A1 - Catalyseur polyol pour système bi-composant polyuréthane - Google Patents
Catalyseur polyol pour système bi-composant polyuréthaneInfo
- Publication number
- EP4457258A1 EP4457258A1 EP22839682.6A EP22839682A EP4457258A1 EP 4457258 A1 EP4457258 A1 EP 4457258A1 EP 22839682 A EP22839682 A EP 22839682A EP 4457258 A1 EP4457258 A1 EP 4457258A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- catalyst
- polyol
- function
- component
- imidazole
- 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.)
- Pending
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/1825—Catalysts containing secondary or tertiary amines or salts thereof having hydroxy or primary amino groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/1841—Catalysts containing secondary or tertiary amines or salts thereof having carbonyl groups which may be linked to one or more nitrogen or oxygen atoms
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
- C08G18/20—Heterocyclic amines; Salts thereof
- C08G18/2009—Heterocyclic amines; Salts thereof containing one heterocyclic ring
- C08G18/2027—Heterocyclic amines; Salts thereof containing one heterocyclic ring having two nitrogen atoms in the ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/285—Nitrogen containing compounds
- C08G18/2865—Compounds having only one primary or secondary amino group; Ammonia
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/6705—Unsaturated polymers not provided for in the groups C08G18/671, C08G18/6795, C08G18/68 or C08G18/69
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/6715—Unsaturated monofunctional alcohols or amines
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/791—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups
- C08G18/792—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing isocyanurate groups formed by oligomerisation of aliphatic and/or cycloaliphatic isocyanates or isothiocyanates
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/02—Polyureas
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/06—Polyurethanes from polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C08L75/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
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- 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
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
Definitions
- the present invention relates to the field of two-component polyurethane coatings based on organic solvents or in aqueous dispersion.
- the invention relates to a polyol catalyst for the formation of two-component polyurethane coatings, a method for preparing such a catalyst, its use as a catalyst or as a polyol component in a crosslinkable two-component polyurethane composition, a two-component polyurethane crosslinkable composition and its final applications.
- Polyurethanes constitute one of the most important classes of polymeric materials. They are generally prepared by bringing two products into contact: a polyol (binding resin) and a polyisocyanate (crosslinking agent). The reaction at room temperature between these two products is slow and requires the addition of a catalyst, most often metallic based on tin, to form the two-component polyurethane coating.
- a polyol binding resin
- a polyisocyanate crosslinking agent
- Polyurethane coatings are recognized for their very good performance in terms of chemical resistance, heat resistance and water resistance, and are widely used in the field of industrial paints.
- the polyol component, the polyisocyanate component, and the catalyst it is even possible to impart particular properties to the polyurethane coating, depending on the desired final performance, for example in terms of flexibility or transparency.
- polyurethanes in aqueous dispersion have been developed in favor of polyurethanes based on organic solvents to reduce emissions of volatile organic compounds (VOCs) into the atmosphere.
- VOCs volatile organic compounds
- tin-based catalysts lead to secondary reactions between the isocyanate functions and water, requiring the use of a greater quantity of catalyst, and thus diminishing the original interest of aqueous polyurethanes. .
- EP 1 022 298 B1 describes catalysts for the manufacture of polyurethanes obtained by reaction between (a) polymer compounds containing carboxylic acid and/or anhydride groups with (b) compounds having at least one primary or secondary amino group and/or with compounds having a tertiary amino group and at least one group which reacts with acid or anhydride groups.
- This reaction is not complete, compounds having at least one unreacted free amino group leading to a strong smell.
- Another disadvantage of the polymer compounds used during this reaction is their very high molar mass, and therefore their viscosity, requiring the use of large amounts of diluent.
- EP 0 046 088 B1 describes the use of polyoxyalkylene polyamines as curing agents for the formation of polyurethane by reacting polyoxyalkylene polyamines with derivatives of acrylic acid or alpha-substituted acrylic acids having terminal hydroxy groups , optionally in the presence of a compound having an oxirane ring.
- the polyisocyanates used are mainly aromatic, and the catalytic functions proposed are not very reactive with aliphatic isocyanates.
- the metal catalysts used during the preparation of polyurethanes need to be replaced by less toxic catalysts for humans and the environment, which are capable of reducing the formation time of 'a coating film, and which do not migrate within the coating over time.
- the technical problem to be solved by the present invention therefore consists in the development of a reaction catalyst between a polyol and a polyisocyanate which is environmentally friendly and does not use a toxic compound, while having mechanical performance and working time (ease of use) improved or at least comparable to those of tin-based catalysts.
- the invention therefore aims to provide a catalyst for the reaction between a polyol and a polyisocyanate that respects the environment, free of toxic compounds, and which also has improved mechanical performance, in particular in terms of hardness and chemical resistance, linked to the presence of urea functions, compared to conventional tin-based catalysts.
- the catalyst of the invention also makes it possible to prepare polyurethanes both in solvent-based and aqueous media, and more particularly in an aqueous medium to reduce VOC emissions into the atmosphere.
- the catalyst of the invention also has the advantage of being covalently grafted to the polyurethane, and thus of being integrated into the very structure of the polyurethane, thus avoiding any migration out of the polyurethane over time. This advantageously makes it possible to reduce the odor and VOC emissions associated with the use of conventional tertiary amines.
- the catalyst of the invention has a low polydispersity and a low viscosity, which makes the coating composition in which it is integrated easy and quick to apply, and this without additional caloric intake (low energy-consuming process). Disclosure of Invention
- the subject of the invention is a compound comprising alcohol functions and at least one function chosen from imidazole and/or tertiary amine functions. Since the imidazole and tertiary amine functions are capable of catalyzing the urethanization reaction between an alcohol function and an isocyanate function, they can be designated by the term “catalyst function”.
- the compound according to the invention therefore comprises alcohol functions and at least one catalyst function and will therefore be referred to below by the term “polyol catalyst”.
- the polyol catalyst of the invention comprises:
- the polyol catalyst may in particular be suitable for catalyzing the urethanization reaction between an alcohol function and an isocyanate function, in particular the polyol catalyst is suitable for the production of polyurethanes.
- the polyol catalyst comprises at least one catalyst function.
- the polyol catalyst comprises at least two catalyst functions, which are identical or different.
- a catalyst function is a function capable of catalyzing the urethanization reaction between an alcohol function and an isocyanate function.
- the at least one catalyst function is chosen from imidazole and/or tertiary amine functions.
- the tertiary amine function may in particular have a pKa > 9, preferably a pKa > 10.
- the tertiary amine function advantageously corresponds to the formula -NR1R2 in which R1 and R2, identical or different, represent a C1-C4 alkyl or cycloalkyl, or R1 and R2, together with the nitrogen atom to which they are bonded, form a C2-C6 heterocycle.
- the imidazole function may in particular correspond to the following formula: wherein R3, R4 and Rs are independently selected from H, alkyl, aryl and alkylaryl or R4 and Rs, together with the carbon atoms to which they are bonded, may form a ring.
- C1-C4 alkyl a saturated hydrocarbon aliphatic group, linear or branched.
- C1-C4 alkyl means an alkyl having 1 to 4 carbon atoms.
- branched means that at least one alkyl group such as methyl or ethyl is carried by a linear alkyl chain.
- alkyl group there may be mentioned, for example, methyl, ethyl, n-propyl, i-propyl, n-butyl, t-butyl and n-pentyl groups;
- Cycloalkyl a saturated hydrocarbon ring optionally substituted by one or more alkyl groups.
- Examples of cycloalkyls are cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl or isobornyl;
- - Heterocycle a ring (preferably non-aromatic) in which at least one ring atom is a heteroatom, preferably chosen from O, N or S, more preferably N or O.
- a C2-C6 heterocycle means a heterocycle having 2 to 6 carbon atoms.
- a heterocycle may optionally be substituted with one or more alkyl groups or two ring atoms may be joined by an alkylene bridge to form a polycyclic heterocycle. Examples of heterocycles are morpholine, piperidine, pyrrolidine or quinuclidine;
- Aryl an aromatic group.
- An aryl can contain a single ring or several rings, at least one of which is aromatic. Examples of aryls are phenyl, naphthyl or biphenyl;
- Alkylaryl an alkyl group as defined above substituted by an aryl group.
- An example of alkylaryl is benzyl.
- the polyol catalyst comprises at least one urea function.
- the polyol catalyst comprises at least two urea functions.
- a urea function can in particular be a substituted urea function.
- a substituted urea function is a urea function having at least one nitrogen atom which does not carry a hydrogen atom.
- a substituted urea function may in particular have a Re substituent originating from an aza-Michael reaction between a primary amine and a compound functionalized by at least one (meth)acrylate group, preferably a compound functionalized by at least one acrylate group , more preferably a compound functionalized by a single acrylate group.
- a substituted urea function may in particular have a substituent Z bearing at least one catalyst function as defined above (ie an imidazole or tertiary amine function).
- Z can be a group of formula - A'-(CAT) P in which:
- A' is an alkylene or an alkylene comprising at least one heteroatom, preferably a C2-C6 alkylene, p is 1 or 2, and preferably 1;
- CAT is a catalyst function as defined above (i.e. an imidazole or tertiary amine function).
- An alkylene can be linear or branched.
- An alkylene can be divalent, trivalent, tetravalent, pentavalent or hexavalent.
- a C2-C6 alkylene means an alkylene having 2 to 6 carbon atoms.
- - Alkylene comprising at least one heteroatom an alkylene of which at least one carbon atom is replaced by heteroatom, in particular chosen from O, N or S, preferably N.
- the polyol catalyst of the invention corresponds to the following formula (1): in which :
- - R' is H or methyl, preferably H
- - Z is a group comprising at least one catalyst function as defined above,
- A is the residue of a polyol, and preferably A is a C2-C12 alkylene optionally alkoxylated or esterified, for example by an ester function resulting from the opening of a lactone such as caprolactone,
- I is advantageously the residue of a diisocyanate.
- Z is advantageously a group of formula -A′-(CAT) P as defined above.
- Z is advantageously the residue of a polyol chosen from: ethylene glycol, 1,2- or 1,3- propylene glycol, 1,2-, 1 ,3- or 1,4-butylene glycol, 1,5-pentanediol, 1,6- hexanediol, 1,8-octanediol, 1,9-nonanediol, 1,10-decanediol, 1,12-dodecanediol, 2-methyl-l,3-propanediol, 2,2-diethyl-l,3-propanediol, 3- methyl-l,5-pentanediol, 3,3-dimethyl-l,5-pentanediol, neopentyl glycol, 2,4-diethyl-l,5-pentanediol, cyclohexanediol, cyclohexanediol, cyclohex
- a polypropylene glycol preferably having a molecular weight by weight M w ranging from 200 to 10,000 g. mol 1
- a polytetra methylene glycol preferably having a molecular weight by weight M w ranging from 200 to 10,000 g. mol 1
- a polyethylene glycol-co-propylene glycol preferably having a molecular weight by weight M w ranging from 200 to 10,000 g.
- an alditol ie erythritol, threitol, arabitol, xylitol, ribitol, mannitol, sorbitol, glactitol, fucitol or iditol
- a dianhydrohexitol ie isosorbide, isomannide or isoidide
- tris(2-hydroxyethyl)isocyanurate a polybutadiene polyol preferably having a molecular weight by weight M w ranging from 200 to 10,000 g.
- a polyester polyol preferably having a molecular weight by weight M w ranging from 200 to 10,000 g. mol 1
- a polyether polyol preferably having a molecular weight by weight M w ranging from 200 to 10,000 g. mol 1
- a polyorganosiloxane polyol preferably having a molecular weight by weight M w ranging from 200 to 10,000 g. mol 1
- a polycarbonate polyol preferably having a molecular weight by weight M w ranging from 200 to 10,000 g.
- mol 1 as well as the alkoxylated (eg ethoxylated and/or propoxylated) derivatives thereof, and the derivatives obtained by ring-opening polymerization of a lactone (eg E-caprolactone) initiated with one of the aforementioned polyols .
- a lactone eg E-caprolactone
- a is advantageously equal to 1.
- b is advantageously equal to 2.
- the second object of the invention relates to a method for preparing a catalyst according to the invention comprising the following steps:
- step (ii) reaction between the amino-ester compound obtained at the end of step (i) with a polyisocyanate, to form a polyol catalyst with at least one urea function.
- a hydroxylated (meth)acrylate monomer can in particular be functionalized by at least one hydroxylated group, preferably functionalized by 1, 2, 3, 4 or 5 hydroxylated groups, more preferentially functionalized by a single hydroxylated group. More preferably, a hydroxylated (meth)acrylate monomer is a compound functionalized by a single acrylate group and a single hydroxylated group.
- hydroxylated (meth)acrylate monomer used in step (i) of the process according to the invention may in particular correspond to the following formula (2): in which :
- - R' is H or methyl, preferably H
- A is the residue of a polyol, and preferably A is a C2-C12 alkylene optionally alkoxylated or esterified, for example by an ester function from the opening of a lactone such as caprolactone,
- the hydroxylated (meth)acrylate monomer of formula (2) may in particular result from the reaction of a polyol of formula (3) with a (meth)acrylation agent such as (meth)acrylic acid, (meth)acrylic anhydride, (meth)acryloyl chloride: in which
- A is the residue of a polyol, and preferably A is a C2-C12 alkylene optionally alkoxylated or esterified, for example by an ester function resulting from the opening of a lactone such as caprolactone,
- the hydroxylated (meth)acrylate monomer used during step (i) is chosen from 2-hydroxyethyl acrylate, 2-hydroxypropyl acrylate, acrylate 3-hydroxypropyl acrylate, 2-hydroxybutyl acrylate, 3-hydroxybutyl acrylate, 4-hydroxybutyl acrylate, 2-hydroxy-3-phenoxypropyl acrylate, 3-chloro-2 acrylate - hydroxypropyl, glycerin monoacrylate, trimethylolpropane monoacrylate, di(trimethylolpropane) monoacrylate, trimethylolethane monoacrylate, pentaerythritol monoacrylate, dipentaerythritol monoacrylate, polyethylene glycol monoacrylate, polypropylene glycol monoacrylate, monoacrylate polyethylene-co-polypropylene glycol, polytetra methylene glycol monoacrylate, a polycaprolactone (meth) acrylate corresponding to the following formula (4)
- the hydroxylated (meth)acrylate monomer used during step (i) is chosen from hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, a polycaprolactone (meth)acrylate corresponding to formula (2) above, or mixtures thereof.
- the monomer having at least one primary amine function used in step (i) of the process according to the invention may in particular correspond to the following formula (5):
- Z is a group comprising at least one catalyst function as defined above (ie an imidazole or tertiary amine function).
- the monomer having at least one primary amine function and at least one catalyst function used during step (i) may also optionally comprise at least one secondary amine function.
- the monomer having at least one primary amine function and at least one catalyst function used during step (i) is chosen from N,N-dimethylethylenediamine, N,N - diethylethylenediamine, dimethylaminopropylamine (DMAPA), 3-(diethylamino)-l-propylamine (DEAPA), 4-(dimethylamino)-l-butylamine, 4-(diethylamino)-l-butylamine, 5-(dimethylamino) )-l-pentylamine, N,N-dimethyldipropylenetriamine (DMAPAPA), N-(2-aminoethyl)-N-methylcyclohexanamine, 2-morpholinoethylamine, 3-morpholinopropylamine, 2-piperidinoethylamine, 3-piperidinopropylamine, 5-piperidinopentylamine, 2-(4-methyl-l-piperidinyl)ethanamine
- the monomer having at least one primary amine function and at least one catalyst function placed in implemented during step (i) is chosen from dimethylaminopropylamine (DMAPA), 3-(diethylamino)-l-propylamine (DEAPA), N,N-dimethyldipropylenetriamine (DMAPAPA), l-(3-aminopropyl) imidazole, or mixtures thereof.
- DMAPA dimethylaminopropylamine
- DEAPA 3-(diethylamino)-l-propylamine
- DMAPAPA N,N-dimethyldipropylenetriamine
- l-(3-aminopropyl) imidazole or mixtures thereof.
- the amino-ester compound obtained at the end of step (i) may in particular correspond to the following formula (6): in which
- - R' is H or methyl, preferably H
- A is the residue of a polyol, and preferably A is a C2-C12 alkylene optionally alkoxylated or esterified, for example by an ester function resulting from the opening of a lactone such as caprolactone,
- - Z is a group comprising at least one catalyst function as defined above (i.e. an imidazole or tertiary amine function)
- the polyisocyanate used in step (ii) of the process according to the invention may in particular correspond to the following formula (7): in which
- the polyisocyanate used during step (ii) is chosen from isophorone diisocyanate (IPDI), toluene diisocyanate (TDI), 4,4'-diisocyanate of diphenylmethane (4,4'-MDI), dicyclohexylmethane 4,4'-diisocyanate, tetramethylxylene diisocyanate (TMXDI), hydrogenated tetramethylxylene diisocyanate, hexamethylene diisocyanate
- HDI high density polyethylene
- NBDI norborane diisocyanate
- diisocyanate of tri methylenehexa methylene 1,5-naphthylene diisocyanate
- biuret allophonate and isocyanurate forms of these polyisocya nates, or mixtures thereof.
- the polyisocyanate used during step (ii) is chosen from isophorone diisocyanate (IPDI), toluene diisocyanate (TDI), hexamethylene diisocyanate (HDI), or mixtures thereof.
- IPDI isophorone diisocyanate
- TDI toluene diisocyanate
- HDI hexamethylene diisocyanate
- the molar ratio between the primary amine functions of step (i) and the isocyanate functions varies from 0.8 to 1.2, and preferably is approximately 1, this in order to obtain a polyol catalyst that is not very polydisperse, and therefore not very viscous.
- the process of the invention may also comprise an intermediate step between steps (i) and (ii) aimed at consuming the residual primary amines still present which would not have reacted during step (i).
- This intermediate step may consist of adding a (meth)acrylate monomer, the latter possibly being identical to or different from the hydroxylated (meth)acrylate monomer used during step (i).
- the (meth)acrylate monomer added during this intermediate step is preferably a mono- or multifunctional (meth)acrylate monomer such as 1,6-hexanediol diacrylate (HDDA), tert-butylcyclohexyl acrylate, 2-(2 -ethoxyethoxy)ethyl acrylate, lauryl acrylate, isobornyl acrylate, 3-methyl-1,5-pentanediol diacrylate, 1,10-decanediol diacrylate, tricyclodecaneimethanol diacrylate, di(tri methylol propane)tetraacrylate.
- HDDA 1,6-hexanediol diacrylate
- tert-butylcyclohexyl acrylate 2-(2 -ethoxyethoxy)ethyl acrylate
- lauryl acrylate isobornyl acrylate
- 3-methyl-1,5-pentanediol diacrylate
- the process of the invention may also comprise the addition of a monomer having at least one primary amine function and at least one alcohol function, such as ethanolamine or a (poly)alkylene glycol hydroxy amine of formula NH2 - [Alk-O] q -Alk-OH in which each Alk is a C2-C4 alkylene (in particular ethylene, propylene or tetra methylene) and q ranges from 1 to 30 (in particular from 1 to 10).
- a monomer having at least one primary amine function and at least one alcohol function, such as ethanolamine or a (poly)alkylene glycol hydroxy amine of formula NH2 - [Alk-O] q -Alk-OH in which each Alk is a C2-C4 alkylene (in particular ethylene, propylene or tetra methylene) and q ranges from 1 to 30 (in particular from 1 to 10).
- the addition of such a monomer can in particular increase the
- the monomer having at least one primary amine function and at least one alcohol function is added during step (i), and more preferentially at the same time as the monomer having a primary amine function and a catalyst function.
- the ratio by weight between the monomer having at least one primary amine function and at least one catalyst function and the monomer having at least one primary amine function and at least one alcohol function varies from 0.1 to 100% , and preferably between 30 and 70%.
- a third object of the present invention is the use of a polyol catalyst according to the invention:
- polyurethane crosslinkable composition further comprising a polyisocyanate component and, optionally, another polyol component free of catalyst function (i.e. free of imidazole and/or tertiary amine function).
- the polyol catalyst of the invention When used as a catalyst in a two-component polyurethane crosslinkable composition comprising a polyisocyanate component and a polyol component, it is preferably used in an amount ranging from 10 to 100% by weight relative to the total weight of the polyol component.
- polyol catalyst of the invention When used as polyol component in a two-component polyurethane crosslinkable composition further comprising a polyisocyanate component and, optionally, another polyol component free of catalyst function, it is preferably used in an amount ranging from 0.1 to 10% by weight relative to the total weight of the polyol component.
- the fourth object of the invention relates to a two-component polyurethane crosslinkable composition
- a polyisocyanate component b) a polyol component comprising: b1) from 0.1 to 100% by weight, relative to the total weight of the polyol component, of a polyol catalyst according to the invention, and b2) from 0 to 99.9% by weight, relative to the total weight of the polyol component, of a other polyol component free of catalyst function (ie free of imidazole and/or tertiary amine function).
- the polyisocyanate component a) preferably has a functionality greater than or equal to 3, more preferably greater than 2, and even more preferably equal to 3.
- the polyol component b) preferably has an IOH number of between 200 and 300 mg KOH/g, more preferably between 50 and 200 mg KOH/g, and even more preferably between 80 and 150 mg KOH/g.
- the polyol component of the two-component polyurethane crosslinkable composition of the invention may comprise: b1) from 0.1 to 10% by weight, and preferably between 1 and 7% by weight, relative to the total weight of the polyol component, of a polyol catalyst according to the invention, and b2) from 90 to 99.9% by weight, and preferably between 93 and 99% by weight, relative to the total weight of the polyol component, of another polyol component free of catalyst function (i.e. free of imidazole and/or tertiary amine function).
- the polyol component of the two-component polyurethane crosslinkable composition of the invention may comprise: b1) from 10 to 100% by weight, relative to the total weight of the polyol component, of a polyol catalyst according to the invention, and b2) from 0 to 90% by weight, relative to the total weight of the polyol component, of another polyol component free of catalyst function (i.e. free of imidazole and/or tertiary amine function) .
- the two-component polyurethane crosslinkable composition of the invention is free of metal catalyst, and in particular is free of tin-based catalyst.
- the two-component polyurethane crosslinkable composition of the invention is advantageously a coating composition, and more particularly a aqueous coating composition, preferably chosen from paint, varnish, ink, adhesive, glue compositions, and more preferably an aqueous paint or varnish composition.
- the two-component polyurethane crosslinkable composition of the invention may be a protective coating composition, in particular a finishing coating composition or an anti-corrosion coating composition, or a decorative coating composition.
- These coating compositions are particularly suitable for applications in the following fields: railway construction and renovation, automobile, road transport, naval, aeronautics, agricultural machinery, public works machinery, wind turbines, oil platforms, containers, metal buildings, armatures or coils metal, or building including furniture, parquet, carpentry and carpentry.
- Another object of the invention relates to a method for preparing a coating comprising a step of applying a two-component polyurethane crosslinkable composition according to the invention to a substrate, followed by a step of drying said composition, preferably at room temperature (20°C).
- the application of the two-component polyurethane crosslinkable composition according to the invention can be done by means of a brush, a roller or by means of a spray or else by dipping.
- the two-component polyurethane crosslinkable composition of the invention is preferably applied to a substrate chosen from metal, glass, wood, including chipboard and plywood, plastic, metal, concrete, plaster, composite, textile substrates.
- the last object of the invention relates to a substrate coated with a two-component polyurethane crosslinkable composition according to the invention, preferably chosen from substrates made of metal, glass, wood, including chipboard and plywood, plastic , metal, concrete, plaster, composite, textile.
- the invention further comprises other provisions which will emerge from the additional description which follows, which relates to examples of the preparation of polyol catalysts according to the invention, and to the evaluation of two-component polyurethane crosslinkable compositions comprising them, and in Figure 1 and in Figure 2.
- Figure 1 is a graph showing the gloss retention at an angle of 20° over time of various reference polyurethane two-component systems and according to the invention.
- FIG. 2 is a graph representing the coloration (AE*ab) over time of various two-component polyurethane reference systems and according to the invention.
- the amine index was measured by assay with a Metrohm titrimeter (848 titrino plus) equipped with a Metrohm reference 6.0262.100 measuring probe.
- the sample to be analyzed was weighed into a 100 mL beaker. 50 mL of dichloromethane was added. The sample was completely dissolved by magnetic stirring. The titration was carried out under magnetic stirring with 0.1 N perchloric acid in acetic acid, according to the method of use of the chosen titrimeter.
- the amine number was calculated according to the following equation:
- VE Volume of titrant poured for the sample assay (mL)
- NT Normality of the titrant (0.1 N)
- Pot life is the time required to observe a doubling of the initial viscosity of a varnish composition.
- the viscosity is measured regularly over time. All the measurements make it possible to draw a straight line which makes it possible to calculate the "pot-life" of the composition by linear regression. This usual measurement makes it possible to know the ideal range of use of the composition without losing applicative properties.
- Dust-free drying is measured according to standard NF EN ISO 9117-3 of 2010. Using a filmograph, a varnish composition with a thickness of approximately 40-50 ⁇ m (dry thickness) is applied to a QD412 steel plate (in an air-conditioned room at 23°C and 50% relative humidity). The film is then brought into contact with calibrated micrometric glass beads (particle size 125/250 ⁇ m). After a contact time of 10 seconds, the plate is tilted, then dusted using a brush at different times until the beads have completely detachment from the surface of the varnish. The time when the balls no longer stick to the surface corresponds to dust-free drying.
- the Persoz hardness is measured according to standard N F EN ISO 1522 of March 2007.
- the Persoz hardness is measured after application with a filmograph of a varnish composition with a thickness of approximately 40-50 ⁇ m (dry thickness) on a plate of QD46 steel (in an air-conditioned room at 23°C and 50% relative humidity).
- the measurement is a damping time in seconds of the pendulum between 12 and 4°.
- the pendulum balls are placed on the varnish coated plate.
- the amortization time is recorded on the automatic counter. The measurements are made at regular intervals over time in order to follow the development of hardness.
- the chemical resistance is evaluated after application with a filmograph of a varnish composition with a thickness of about 40-50 ⁇ m (dry thickness) on a QD46 steel plate (in an air-conditioned room at 23° C. and 50% relative humidity).
- the chemical resistance is measured using a Taber® 5750 linear abraser after the film has dried for 7 days in an air-conditioned room at 23° C. and 50% relative humidity.
- the methyl ethyl ketone (MEK) resistance of the varnish film is evaluated by the time required (in seconds) for the wear of the varnish surface with a weight of one kilo equipped with a cotton wick soaked in MEK by carrying out back and forth on the coating to be tested, until the varnish is completely destroyed. The speed of the sliding axis is fixed. The cotton is moistened regularly.
- Adhesion is measured according to standard NF EN ISO 2409 of 2013, after application with a filmograph of a varnish composition with a thickness of approximately 40-50 ⁇ m (dry thickness) on a QD46 steel plate (in an air-conditioned room at 23°C and 50% relative humidity).
- the adhesion test evaluates the resistance of the coating to being separated from the substrate on which it is applied, by making a grid of incisions in the coating to the substrate.
- a standardized adhesive tape (Scotch® 2525-7.5 N/cm from 3M) is affixed and rubbed firmly on the grid and then torn off at an angle of 60°. Visual observation of the notched area makes it possible to assess the quantity of coating remaining on the support.
- the rating is made from the table of the standard on a scale of 0 (good) to 5 (bad). Adherence performance is monitored over time at 1, 7 and 14 days.
- Accelerated UV aging (according to standard NF EN 927-6 of 2006): The device used is equipped with 313 nm UVB lamps (aggressive exposure to short wavelengths). The samples are exposed in a UV aging chamber (QUV Solar Eye - Labomat). Periods of exposure to light alternate with periods of condensation: 4 hours with UV at 60°C, then 4 hours of condensation at 50°C.
- the accelerated UV aging test can highlight defects such as yellowing, whitening, loss of gloss (gloss retention), cracking, delamination, chalking, etc., faster than outdoor exposure. The test is carried out on an aluminum plate.
- the color difference is measured using a Minolta CM2600d spectrocolorimeter (illuminant D65 - daylight under 10°).
- L* represents the value on a white-black axis
- a* represents the value on a green-red axis
- b* represents the value on a blue-yellow axis.
- the color difference AE* ab in the color space L a* b* is defined according to the following equation: where AL*, Aa*, Ab* are the color difference values between the sample and the reference color. r0078 ⁇ l Gloss 20°:
- the gloss measurement at 20° is carried out according to standard NF EN ISO 2813 (2014) (in an air-conditioned room at 23°C and 50% relative humidity).
- the gloss test makes it possible to evaluate the reflective properties of the surface of a coating film by reflection of a light beam directed at a certain angle.
- the gloss is measured using a reflectometer on samples prepared according to the Accelerated UV Aging Test described above. Average gloss retention is calculated on the basis of the arithmetic mean of the three residual gloss measurements (after aging) compared to the initial gloss (before aging). r0079 ⁇ l Raw materials:
- the raw materials used for the preparation of the polyol catalysts according to the invention were the following:
- DMAPA Dimethylaminopropylamine
- HDDA Hexanediol diacrylate
- HDI Hexamethylene diisocyanate
- IPDI Isophorone diisocyanate
- Tert-octylamine (57.92 g, i.e. 0.4455 mol) was introduced at 23° C. into a reactor equipped with a reflux column, a dropping funnel, a thermometer and a agitator with inclined blades.
- 2-Hydroxyethyl acrylate (2-HEA) (74.21 g, ie 0.6397 mol) was then introduced through the dropping funnel over a period of 15 minutes.
- 2-HEA 2-Hydroxyethyl acrylate
- the temperature was kept below 40°C by controlling the exotherm with an ice water bath. After introduction of 2-HEA, the temperature was maintained at 40° C. for 2 hours 30 minutes.
- DMAPA Dimethylaminopropylamine
- butyl acetate 51.46 g
- DMAPA Dimethylaminopropylamine
- the mixture was then introduced into the reactor through the dropping funnel over a period of 20 seconds, then the temperature raised and then maintained at 60° C. for 30 minutes.
- the resulting mixture was then cooled to 30°C.
- Hexa methylene diisocyanate (HDI) (53.88 g, ie 0.3207 mol) was then added via the dropping funnel drop by drop over a period of 1 hour.
- HDI Hexa methylene diisocyanate
- the temperature was kept below 50°C by controlling the exotherm with an ice water bath. After introduction of the HDI, the temperature was raised, then maintained at 80° C. for 1 hour.
- DMAPA Dimethylaminopropylamine
- 2-HEA 62.00 g, ie 0.5345 mol
- the temperature was kept below 50°C by controlling the exotherm with an ice water bath.
- the temperature was maintained at 50°C for 30 minutes.
- Hexanediol diacrylate (HDDA) (7.50 g, i.e. 0.0332 mol) was then introduced through the dropping funnel over a period of 10 minutes, then the temperature raised and then maintained at 75° C. for 30 minutes .
- HDDA Hexanediol diacrylate
- Proton NMR analysis shows that all of the 2-HEA, all of the HDDA and all of the DMAPA has been consumed.
- Butyl acetate (16.94 g) was then added via the dropping funnel (over 5 minutes), then the temperature was lowered to 30°C.
- HDI 31.92 g, or 0.1900 mol
- the temperature was kept below 50°C by controlling the exotherm with an ice water bath. After introduction of the HDI, the temperature was raised, then maintained at 80° C. for 1 hour.
- DMAPA (51.00 g, ie 0.5000 mol) was introduced at 23° C. into a reactor equipped with a reflux column, a dropping funnel, a thermometer and a stirrer with inclined blades.
- 2-HEA 62.00 g, or 0.5345 mol
- HDDA 7.50 g, or 0.0332 mol
- the mixture is introduced into the reactor drop by drop over a period of 1 hour 30 minutes.
- the temperature was kept below 50° C. by controlling the exotherm with an ice water bath. After the introduction of the 2-HEA + HDDA mixture, the temperature was maintained at 50° C. for 1 hour.
- HDI 23.94 g, or 0.1425 mol was then added via the dropping funnel over a period of 45 minutes.
- IPDI 10.55 g, ie 0.0475 mol was then added via the dropping funnel over a period of 15 minutes.
- the temperature was kept below 50° C. by controlling the exotherm with an ice water bath.
- the temperature was brought to and then maintained at 80° C. for 1 hour.
- the amine index was then measured at 197 mg KOH/g.
- An Infra-Red (IR) analysis showed the total consumption of the isocyanate functions initially present.
- the polyol catalysts of the invention prepared in Examples 1, 2 and 3 were tested in varnish compositions based on acrylic resin.
- the commercial resins used were the following:
- - Synocure® 862 X 60 resin hydroxylated acrylic resin having an IOH of 1.55% relative to the mass resin with a high viscosity (5500-8000 mPa.s at 25°C) and a dry extract of 60% in the xylene.
- - Synocure® 9293 BA 70 resin hydroxylated acrylic resin with high dry extract having an IOH of 2.9% compared to the mass resin with a low viscosity (1000-2000 mPa.s at 25°C) and a dry extract 70% in butyl acetate.
- - LP1164 resin aliphatic polyol polyester resin having an IOH of 4.5% relative to the mass resin with a high viscosity (7500-12500 mPa.s at 25°C) and a dry extract of 70% in SolvessoTM 100.
- Synocure® 862 X 60 gives the following properties to the two-component polyurethane system (compared to the reference composition comprising a catalyst based on dibutyltin dilaurate (DBTDL)):
- Synocure® 9293 BA 70 gives the following properties to the two-component polyurethane system (compared to the reference composition comprising a catalyst based on dibutyltin dilaurate (DBTDL)): - increase in the pot life or "pot life", which allows a greater amplitude of time to apply the varnish,
- DBTDL dibutyltin dilaurate
- the polyol catalyst of example 1 confers a similar development of Persoz hardness, even slightly higher than the reference without polyol catalyst.
- the polyol catalyst of example 2 confers a development of the initial Persoz hardness much higher than the reference, and a more moderate development of the Persoz hardness over time,
- Synocure® 9201 S 75 gives the following properties to the two-component polyurethane system (compared to the reference composition comprising a catalyst based on dibutyltin dilaurate (DBTDL)):
- the polyol catalyst of Example 2 imparts hardness development
- TolonateTM HDT-LV2 hexa methylene diisocyanate trimer, solvent-free, low viscosity, with an NCO content of 23%, marketed by Vencorex.
- the addition of polyol catalysts according to the invention to the commercial resin LP1164 gives the following properties to the two-component polyurethane system (for compared to varnish composition B, reference comprising a catalyst based on dibutyltin dilaurate (DBTDL)):
- Example 2 The polyol catalyst of Example 2 was tested in UVB aging with the Synocure® E21091 resin in the following two-component polyurethane systems:
- Synocure® E21091 resin with the polyol catalyst of the invention has better gloss retention (longer) than Synocure® E21091 resin with DBTDL.
- the gloss of Synocure® E21091 resin with the polyol catalyst of the invention maintains very good gloss retention up to approximately 100 Ohms of UVB exposure, whereas the gloss of Synocure® E21091 resin with DBTDL drops after 800 hours of exposure.
- the Synocure® E21091 resin with the polyol catalyst of the invention has better gloss retention than the Synocure® E21091 resin with DBTDL.
- Synocure® E21091 resin with the polyol catalyst of the invention at a ratio of 97/3 is very similar to Synocure® E21091 resin with DBTDL.
- the Synocure® E21091 resin with the polyol catalyst of the invention at a ratio of 95/5 is a little more colored.
- the Synocure® E21091 resin with the polyol catalyst of the invention has a color very similar to the Synocure® E21091 resin with DBTDL.
- the values of AE* ab are close to 1 and remain stable. No noticeable difference is observed with the naked eye.
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- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
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Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2114682A FR3131586B1 (fr) | 2021-12-30 | 2021-12-30 | Catalyseur polyol pour système bi-composant polyuréthane |
| PCT/EP2022/086208 WO2023126199A1 (fr) | 2021-12-30 | 2022-12-15 | Catalyseur polyol pour système bi-composant polyuréthane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4457258A1 true EP4457258A1 (fr) | 2024-11-06 |
Family
ID=81927341
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22839682.6A Pending EP4457258A1 (fr) | 2021-12-30 | 2022-12-15 | Catalyseur polyol pour système bi-composant polyuréthane |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP4457258A1 (fr) |
| KR (1) | KR20240123840A (fr) |
| CN (1) | CN118488982A (fr) |
| CA (1) | CA3243332A1 (fr) |
| FR (1) | FR3131586B1 (fr) |
| MX (1) | MX2024007842A (fr) |
| WO (1) | WO2023126199A1 (fr) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5736115A (en) * | 1980-08-12 | 1982-02-26 | Mitsui Tekisako Chem Kk | Curing agent composition for polyurethane |
| DE19902505A1 (de) | 1999-01-22 | 2000-07-27 | Basf Ag | Foggingarme Katalysatoren für die Herstellung von Polyurethanen |
| US6723819B2 (en) * | 2001-05-22 | 2004-04-20 | Tosoh Corporation | Catalyst for production of a polyurethane resin and method for producing a polyurethane resin |
| US6984709B2 (en) * | 2002-12-20 | 2006-01-10 | Noveon Ip Holdings Corp. | Organometallic-free polyurethanes having low extractables |
| US8552078B2 (en) * | 2006-10-17 | 2013-10-08 | Air Products And Chemicals, Inc. | Crosslinkers for improving stability of polyurethane foams |
-
2021
- 2021-12-30 FR FR2114682A patent/FR3131586B1/fr active Active
-
2022
- 2022-12-15 KR KR1020247024973A patent/KR20240123840A/ko active Pending
- 2022-12-15 CA CA3243332A patent/CA3243332A1/fr active Pending
- 2022-12-15 CN CN202280087138.2A patent/CN118488982A/zh active Pending
- 2022-12-15 EP EP22839682.6A patent/EP4457258A1/fr active Pending
- 2022-12-15 MX MX2024007842A patent/MX2024007842A/es unknown
- 2022-12-15 WO PCT/EP2022/086208 patent/WO2023126199A1/fr not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| CN118488982A (zh) | 2024-08-13 |
| CA3243332A1 (fr) | 2023-07-06 |
| FR3131586A1 (fr) | 2023-07-07 |
| MX2024007842A (es) | 2024-07-04 |
| FR3131586B1 (fr) | 2025-12-26 |
| WO2023126199A1 (fr) | 2023-07-06 |
| KR20240123840A (ko) | 2024-08-14 |
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