Process for the production of moisture-hardening binder compositions and their use

US4975493A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Harald Blum · Wachtendonk, DE
• Josef Pedain · Cologne, DE
• Christian Wamprecht · Neuss, DE
• Michael Sonntag · Odenthal, DE

Key dates

• Filing date: Jul 25, 1988
• Grant date: Dec 4, 1990
• Expiry date: Jul 25, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F2800/20
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A moisture-hardening binder composition for lacquer of coating compositions is prepared by mixing PA1 (A) 50 to 97 parts by weight of copolymers of maleic anhydride with olefinically unsaturated monomers, said copolymers containing succinic anhydride units and having molecular weights Mw of 1,500 to 75,000 with PA1 (B) 3 to 50 parts by weight oxazolanes having a molecular weight Mw of 87 to 10,000, PA2 the quantitative ratios of (A) to (B) being such that the composition contains 0.25 to 10 anhydride groups for every oxazolane group, PA2 wherein component (A) consists essentially of copolymers of PA3 (a) 4.5 to 45 parts by weight of maleic anhydride, PA3 (b) 5 to 80 parts by weight of monomers of the formulae ##STR1## or both, and (c) 15 to 92 parts by weight of monomers of the formula ##STR2## wherein, R.sub.1 and R.sub.4 is each, independent of the other, an aliphatic or cycloaliphatic C.sub.1 -C.sub.12 hydrocarbon radical with or without oxygen, sulfur or nitrogen as a heteratom, R.sub.2 is hydrogen, methyl, ethyl, chlorine or fluorine, PA3 R.sub.3 is a C.sub.2 -C.sub.15 aliphatic hydrocarbon radical, a C.sub.5 -C.sub.10 cycloaliphatic hydrocarbon radical, a C.sub.7 -C.sub.18 ar…