摘要:
This invention relates to aminoplast crosslinker resins compositions based on at least partially alkylated reaction products A of melamine, formaldehyde and an alkanol with the following parameters: the ratio of the amount of substance n(CH2O) of combined formaldehyde to the amount of substance n(Mel) of melamine is in the range of from 5.6 mol/mol to 6.2 mol/mol, the ratio of the amount of substance n(RO) of alkyl ether groups in the crosslinker resin to the amount of substance n(Mel) of melamine is in the range of from 5.0 mol/mol to 5.6 mol/mol, the mass fraction of monomer in the resin, calculated as the ratio of the mass of monomer m(1) to the mass m(A) of the reaction products A is between 35 % and 55 %, to a process for their preparation, and to a method of use thereof as crosslinker in combination with hydroxy- functional polymers for coating of heat-sensitive substrates.
摘要:
The invention relates to an aqueous coating composition comprising a dispersion of an acrylic copolymer A, a crosslinker B which is a multifunctional isocyanate B1, or an aminoplast crosslinker B2 or a combination of both Bl and B2, and water, wherein the acrylic copolymer A has moieties derived from alkyl(meth)acrylates A1, from hydroxyalkyl(meth)acrylates A2, from olefinically unsaturated carboxylic acids A3, and optionally, further olefinically unsaturated monomers A4 selected from the group consisting of vinyl aromatics A41, vinyl esters A42, vinyl halogenides A43, olefinically unsaturated amides A44, olefins A45, vinyl ester A46, and from an olefinically unsaturated surface-active compound A5 which has at least one olefinic unsaturation, and at least one hydrophilic group per molecule, a method for its preparation, and the use thereof in coating metal substrates, stone, concrete, paper and cardboard.
摘要:
The invention relates to an emulsifiable catalyst composition which comprises at least one of metal salts, metal complexes, and acids, and at least one amphiphilic compound which is a graft copolymer based on oils or diene homo-and copolymers that bear graft branches derived from olefinically unsaturated monomers, and an average, per molecule, of at least one cationic group or cationogenic group that forms cations when contacted with an acid, to a process for its preparation, and a method of use thereof as catalyst in aqueous coating compositions.
摘要:
The invention is directed to an aqueous coating composition comprising a combination of a high molar mass urethane-modified alkyd resin A and a reactive diluent D, characterised in that the alkyd resin A has moieties derived from grafted fatty acids A1 which are graft products of fatty acids A11 having at least one olefinic unsaturation, on average, per molecule, and olefinically unsaturated linear or branched aliphatic acids A12 preferably having from three to ten carbon atoms, polyhydric aliphatic alcohols A2, fatty acids A3, polyfunctional isocyanates A4, and the reactive diluent D has a hydroxyl number of at most 5 mg/g, and comprises moieties derived from olefinically unsaturated fatty acids D1, and polyoxyalkylene glycols D2 or their monoethers, to a process of preparation thereof, and a method of use thereof for coating of wood, fibreboard, textiles, paper, cardboard, leather, and thermoplastic materials.
摘要:
The invention relates to a polyurethane P comprising a moiety derived from a polyfunctional isocyanate F, and a hydroxyfunctional compound ABCE made from a grafted fatty acid AB which in turn is made from a fatty acid A having at least one olefinic unsaturation, and grafted with a mixture B of olefinically unsaturated monomers which mixture comprises at least one acid-functional olefinically unsaturated monomer B1, wherein the grafted fatty acid AB has on average at least 1.1 acid groups per molecule, at least one polyhydric alcohol C having at least two hydroxyl groups, and at least one fatty acid E, to a process of making this polyurethane, and to a method of use thereof in the form of an aqueous dispersion to formulate coating compositions.
摘要:
This invention relates to aminoplast crosslinker resins compositions based on at least partially alkylated reaction products A of melamine, formaldehyde and an alkanol with the following parameters: the ratio of the amount of substance n (CH 2 O) of combined formaldehyde to the amount of substance n (Mel) of melamine is in the range of from 5.6 mol/mol to 6.2 mol/mol, the ratio of the amount of substance n (RO) of alkyl ether groups in the crosslinker resin to the amount of substance n (Mel) of melamine is in the range of from 5.0 mol/mol to 5.6 mol/mol, the mass fraction of monomer in the resin, calculated as the ratio of the mass of monomer m (1) to the mass m (A) of the reaction products A is between 35 % and 55 %, to a process for their preparation, and to a method of use thereof as crosslinker in combination with hydroxy- functional polymers for coating of heat-sensitive substrates.
摘要:
Reaction products AE of vinyl copolymers A having at least one functional group per molecule, with multifunctional compounds E derived from epoxide functional compounds having, on average, at least two functional groups per molecule, which reaction products AE have structural elements derived from ethylenically unsaturated monomers, and beta-hydroxy alkylene imine, -NR-CH 2 -CR' (OH)-, or the corresponding ammonium structure, where R and R', independently from each other, stand for H or an alkyl group having from 1 to 8 carbon atoms, a process for their preparation, and a method of use thereof as binders for waterborne coating compositions.
摘要:
The invention relates to an aqueously dispersible epoxy resin E, comprising building blocks derived from an aliphatic polyether polyol A, an epoxy resin B having at least two epoxide groups per molecule, an epoxy resin B' having at least two epoxide groups per molecule, which may be identical to B, or different from B, an epoxy- functional fatty acid ester D, and an aromatic polyol C, a process for the preparation thereof, and a method of use thereof.
摘要:
The invention relates to water-borne coating binders ABC comprising a mixture of a curing agent C and a reaction product AB made by at least partial esterification of a hydroxyl group-containing polyester A and an acid groups-containing polyurethane B, characterised in that each of A and B comprise not more than 20 % of the amount of substance of their educts Al, A2, Bl, and B2, of molecules comprising aromatic structures, to a method of their preparation, and a method of use thereof to formulate primer-surfacer coating compositions.
摘要:
The invention relates to mixtures of at least one acrylic resin dispersion A and a second dispersion B which is at least one of a polyurethane dispersion B1 which comprises, in its polymer, moieties derived from grafted fatty acids, and a mixture B2 of a polyurethane dispersion B21 and an aqueously dispersed alkyd resin B22, and to a method of use thereof for coating of porous substrates.