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Water-based coating compositions

A technology for water-based coatings and compositions, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve problems such as high cost and logistics and quality problems

Inactive Publication Date: 2015-04-08
AXALTA COATING SYST IP CO LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, this can lead to quality problems after the coating composition is applied
On the other hand, storage and transportation at higher temperatures cause higher costs and logistical problems

Method used

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  • Water-based coating compositions

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Embodiment Construction

[0021] Hereinafter, the present invention will be explained in more detail.

[0022] It will be appreciated that certain features of the invention, which are, for clarity, described above and below in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features of the invention which are, for brevity, described in the context of a single embodiment, may also be provided separately or in any subcombination. In addition, references to the singular may also include the plural unless the context specifically dictates otherwise (for example, "a" and "an" may refer to one or to one or more.

[0023] The term "polyurethane macromonomer" as used herein and hereinafter shall mean a polymer intermediate which contains at least one unsaturated group and which is still capable of polymerizing with itself and additional unsaturated monomers.

[0024] The short term "polyurethane adhesive" as used here and hereinafter shall m...

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Abstract

The invention relates to water-based coating compositions comprising A) at least one water-dilutable polyurethane hybrid binder, obtained by polymerization of at least one polyurethane macromonomer, containing at least one lateral and / or terminal vinyl group, in the presence of at least one unsaturated monomer copolymerizable with the polyurethane macromonomer, B) optionally at least one curing agent, and C) at least one pigment, characterized in that, the at least one polyurethane macromonomer is based on at least one polyhydroxyl compound, said polyhydroxyl compound comprises at least 50 % by weight of at least one polycarbonate polyol, which is liquid at 20C, the % by weight are based on the total amount of the polyhydroxyl compound.

Description

technical field [0001] The present invention relates to water-based coating compositions comprising hybrid polyurethane binders. The water-based coating compositions are particularly suitable as pigmented water-based basecoat compositions in multilayer coatings and especially in vehicle coatings and repair coatings. Background technique [0002] For environmental reasons, water-based coating compositions are increasingly being used in vehicle coatings, both for original and refinish coatings. [0003] Owing to their excellent properties, it is common practice to use water-dilutable polyurethane resins in the form of aqueous dispersions as main binders in aqueous coating compositions and especially also in aqueous basecoat compositions. [0004] The properties of aqueous basecoat compositions and of coatings obtained therefrom are essentially determined by the specific chemical structure of the polyurethanes used. [0005] For example, EP 0 427 979 describes aqueous coating...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08K3/00C08F290/06C08G18/08C09D175/16C08G18/34C08G18/44
CPCC08G18/672C08K3/0033C08G18/0823C09D175/16C08G18/348C08F290/067C08G18/44C08K3/013C08G18/6659C08L75/16C09D151/08C08K5/0033C09D7/61
Inventor C·弗洛斯巴赫P·P·布鲁伊兰茨J-L·维托尔
Owner AXALTA COATING SYST IP CO LLC