摘要:
The invention is directed to hydrophilic sagging control agents comprising at least one urea group and to aqueous coating compositions containing those hydrophilic sagging control agents. The sagging control agents are obtained by reacting A) at least one hydrophilic polyisocyanate with B) at least one amino-functional compound selected from a group consisting of an amine with at least one primary amino group and at least one hydroxyl group, having the at least one primary amino group on a primary carbon atom, an amino ether with at least one primary amino group, having the at least one primary amino group on a primary carbon atom and mixtures thereof.
摘要:
The invention relates to a process for multi-layer coating of substrates, in particular vehicles and vehicle parts, by applying two or more coating layers and curing of the applied coatings, wherein at least one of the coating layers is produced from a coating composition which comprises at least one polyurethane binder with free-radically polymerizable olefinic double bonds in the form of (meth)acryloyl groups and with hydrolysable alkoxysilane groups, wherein the resin solids content of the coating composition exhibits an equivalent weight of C=C double bonds of 200 - 2000, preferably of 300 - 1500, and a content of silicon bound in alkoxysilane groups of 1 - 10 wt-%, preferably of 1 - 7 wt-%, especially preferably of 2 - 6 wt-%, and wherein curing of the coating layer, of which there is at least one, proceeds by free-radical polymerisation of the C=C double bonds on irradiation with high energy radiation and by the formation of siloxane bridges under the action of moisture.
摘要:
The invention relates to aqueous coating compositions for producing primer and/or filler layers in a multi-layer coating, in particular in vehicle coating, comprising the following components: A) at least one water-dilutable epoxy resin, B) at least one polyamine curing agent, C) optionally at least one water-dilutable polyurethane resin, D) water and E) optionally pigments, fillers, conventional paint additives and/or organic solvents, wherein the polyamine curing agent B) comprises: B1) 5-95 % by weight of at least one amino functional compound with at least two secondary and/or primary amino groups and B2) 95-5 % by weight of at least one water-dilutable (meth)acrylic copolymer, wherein the percentages by weight of components B1) and B2) are based on the solids and add up to 100 % by weight.
摘要:
A coating composition useful for coating automobile and truck bodies comprising a binder of: a. polyisocyanate crosslinking agent; b. an isocyanate-reactive component having at least one compound having the following formula: (I) wherein X, Y, R1, R2, m and n are described in the specification, and c. 0.05 to 10 % by weight, based on the total weight of the coating composition, of a metal alkoxide compound; and containing optional additional polymeric components, oligomeric components and antioxidants, light absorbers and light stabilizers.
摘要:
The invention relates to aqueous coating compositions for producing primer and/or filler layers in a multi-layer coating, in particular in vehicle coating, comprising the following components: A) at least one water-dilutable epoxy resin, B) at least one polyamine curing agent, C) optionally at least one water-dilutable polyurethane resin, D) water and E) optionally pigments, fillers, conventional paint additives and/or organic solvents, wherein the polyamine curing agent B) comprises: B1) 5-95 % by weight of at least one amino functional compound with at least two secondary and/or primary amino groups and B2) 95-5 % by weight of at least one water-dilutable (meth)acrylic copolymer, wherein the percentages by weight of components B1) and B2) are based on the solids and add up to 100 % by weight.
摘要:
The invention relates to a process for multi-layer coating of substrates, in particular vehicles and vehicle parts, by applying two or more coating layers and curing of the applied coatings, wherein at least one of the coating layers is produced from a coating composition which comprises a binder system with free-radically polymerizable olefinic double bonds and with hydrolysable alkoxysilane groups, wherein the resin solids content of the coating composition exhibits an equivalent weight of C=C double bonds of 200 - 2000, preferably of 300 - 1500, and a content of silicon bound in alkoxysilane groups of 1 - 10 wt-%, preferably of 1 - 7 wt-%, especially preferably of 2 - 6 wt-%, and wherein curing of the coating layer, of which there is at least one, proceeds by free-radical polymerisation of the C=C double bonds on irradiation with high energy radiation and by the formation of siloxane bridges under the action of moisture.
摘要:
The invention is directed to aqueous compositions of sagging control agents comprising at least one urea groups containing sagging control agent and water, wherein the sagging control agents are obtained by reacting in an aqueous phase A) at least one hydrophilic polyisocyanate with B) at least one amino-functional compound selected from a group consisting of an amine with at least one primary amino group and at least one hydroxyl group, having the at least one primary amino group on a primary carbon atom, an amino ether with at least one primary amino group, having the at least one primary amino group on a primary carbon atom and mixtures thereof. The invention is also directed to coating compositions containing the aqueous compositions of sagging control agents.
摘要:
The invention relates to a process for multi-layer coating of substrates, in particular vehicles and vehicle parts, by applying two or more coating layers and curing of the applied coatings, wherein at least one of the coating layers is produced from a coating composition which comprises at least one polyurethane binder with free-radically polymerizable olefinic double bonds in the form of (meth)acryloyl groups and with hydrolysable alkoxysilane groups, wherein the resin solids content of the coating composition exhibits an equivalent weight of C=C double bonds of 200 - 2000, preferably of 300 - 1500, and a content of silicon bound in alkoxysilane groups of 1 - 10 wt-%, preferably of 1 - 7 wt-%, especially preferably of 2 - 6 wt-%, and wherein curing of the coating layer, of which there is at least one, proceeds by free-radical polymerisation of the C=C double bonds on irradiation with high energy radiation and by the formation of siloxane bridges under the action of moisture.