摘要:
The invention relates to the use of urethane-modified hydrophilic resins ABCD as paste resins for paints containing solvents. The resins ABCD are conversion products of aldehyde resins or ketone resins A, of multifunctional isocyanates B with, on average, at least 2 isocyanate groups per molecule, of aliphatic acids C with at least one acid group and with at least one group that can react with isocyanates while forming a urethane structure or urea structure, and of aliphatic polyethers D with at least one hydroxyl group per molecule, whereby the sum of the mass proportions of educts A to D always equals 100%, and at least one of the educts C and D is used.
摘要:
A process to reduce or suppress the formation of surface defects in paint films comprising adding to an aqueous paint composition at let one of homopolymers B of butyl acrylate and copolymers BA of butyl acrylate and copolymerisable monomers A, characterised in that the mass fraction of moieties arising from the comonomers A in the copolymer does not exceed 30%, and aqueous paint compositions comprising at least one of homopolymer B of butyl acrylate and copolymers BA of butyl acrylate and copolymerisable monomers A.
摘要:
The invention relates to a paste resin AB which is a mixture of a water-reducible alkyd resins B and a basic acrylic copolymer resin A comprising at least one amino group-containing vinyl type monomer A1, and a method of use thereof formulating both water-borne and solvent-borne tinted paints with a wide variety of pigments.
摘要:
Water-dilutable resins ABCD, obtainable by converting aldehyde or ketone resins A, multi-functional isocyanates B, aliphatic acids C, each with at least one acid group and one group that can react with isocyanates to form a urethane or urea structure, and also an aliphatic polyether D, with at least one hydroxyl group per molecule, whereby at least one of the educts C and D is used and if necessary, neutralization with aqueous ammonia or amines, provided a compound according to C is used.
摘要:
Acrylate copolymers containing hydroxyl and fluorine groups as additives for aqueous anionic paint systems for the purpose of preventing surface defects are described. The acrylate copolymers contain selected amounts of hydroxyl groups originating from hydroxyethyl (meth)acrylates or hydroxypropyl (meth)acrylates and fluorine groups originating from 2-perfluoroalkethyl (meth)acrylate, in addition to carboxyl groups neutralizable with bases. The additives are used in amounts of from 0.1 to 2.0% by weight, calculated on solids content and based on the total solids content of the binder in the paint.
摘要:
The invention relates to an ester AB of a polypropylene glycol A with fatty acids B, which ester AB can be added in the form of an aqueous emulsion to an aqueous coating composition, and a method of use of the ester AB as defoamer additive.
摘要:
A method of use of copolymers containing fluoro groups and hydroxyl groups as additives in powder coating materials, comprising mixing these component with powder coatings resins, the copolymers comprising units of the following monomers: olefinically unsaturated monomers having from 5 to 40 carbon atoms, at least one hydroxyl group, and at least one free-radically polymerizable C═C double bond, alkyl esters of monoolefinically unsaturated monocarboxylic acids or dialkyl esters of olefinically unsaturated dicarboxylic acids or mixtures thereof, and (per)fluoroalkyl esters of said carboxylic acids, and powder coating materials which comprise these additives for the purpose of improving the flow properties and the surface.
摘要:
The invention relates to an ester AB of a polypropylene glycol A with fatty acids B, which ester AB can be added in the form of an aqueous emulsion to an aqueous coating composition, and a method of use of the ester AB as defoamer additive.
摘要:
A method of use of copolymers containing fluoro groups and hydroxyl groups as additives in powder coating materials, comprising mixing these component with powder coatings resins, the copolymers comprising units of the following monomers: olefinically unsaturated monomers having from 5 to 40 carbon atoms, at least one hydroxyl group, and at least one free-radically polymerizable C═C double bond, alkyl esters of monoolefinically unsaturated monocarboxylic acids or dialkyl esters of olefinically unsaturated dicarboxylic acids or mixtures thereof, and (per)fluoroalkyl esters of said carboxylic acids, and powder coating materials which comprise these additives for the purpose of improving the flow properties and the surface.
摘要:
The invention relates to a paste resin AB which is a mixture of a water-reducible alkyd resins B and a basic acrylic copolymer resin A comprising at least one amino group-containing vinyl type monomer A1, and a method of use thereof for formulating both water-borne and solvent-borne tinted paints with a wide variety of pigments.