High solids polyurethane binder compositions containing grafted polyacrylate polyols

US5969054A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Christian Wamprecht · Neuss, DE
• Michael Sonntag · Odenthal, DE
• Dieter Margotte

Key dates

• Filing date: Jul 7, 1997
• Grant date: Oct 19, 1999
• Expiry date: Jul 7, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D151/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to binder compositions containing PA1 A) 40 to 95 parts by weight of OH-functional graft copolymer resins prepared by copolymerizing PA2 a) 0.1 to 10 parts by weight of polybutadienes containing at least 20% of 1,2-vinyl groups, PA2 b) 5 to 30 parts by weight of aliphatic .alpha.-olefins, PA2 c) 0.1 to 35 parts by weight of glycidyl esters of .alpha.-alkylalkane-monocarboxylic acids, PA2 d) 10 to 70 parts by weight of unsaturated, aromatic monomers, PA2 e) 5 to 60 parts by weight of hydroxyalkyl esters of acrylic and/or methacrylic acid having primary hydroxyl groups, PA2 f) 0 to 50 parts by weight of (cyclo)aliphatic esters of acrylic and/or methacrylic acid, PA2 g) 0.1 to 20 parts by weight of .alpha.,.beta.-mono-olefinically unsaturated monocarboxylic or dicarboxylic acids and/or maleic acid or fumaric acid semi-esters and PA2 h) 0 to 30 parts by weight of other copolymerizable compounds and PA1 B) 5 to 60 parts by weight of polyfunctional crosslinking resins, wherein 1 to 30% by weight of the OH groups of the component A) are secondary OH groups. The present invention also relates to the use of these binder compositions for vehicle coatings, in par…