Hybrid coating compositions

US6288198A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Markus Mechtel · Neunburg vorm Wald, DE
• Stefan Groth · Leverkusen, DE
• Lutz Schmalstieg · Neunburg vorm Wald, DE

Key dates

• Filing date: Nov 24, 1999
• Grant date: Sep 11, 2001
• Expiry date: Nov 24, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to hybrid coating compositions containing PA1 A) 5 to 80 wt %, based on the weight of A) and B), of an aliphatic polyisocyanate-aminosilane adduct that is the reaction product of PA2 A1) a polyisocyanate component having an average NCO functionality of 2.5 to 5.5 and an isocyanate content, based on solids, of 9 to 50 wt % and containing aliphatic polyisocyanates with PA2 A2) at least 0.7 amino equivalents, based on the NCO equivalents of A1), of an aminosilane corresponding to formula (I) EQU (RO).sub.n Y.sub.3-n Si--CH.sub.2 CH.sub.2 CH2--NHZ (I), wherein PA1 R and Y represent methyl and/or ethyl, PA1 Z represents H, C.sub.1 -C.sub.12 alkyl, CH.sub.2 CH.sub.2 CH.sub.2 -Si(OR).sub.2 Y.sub.3-n and PA1 n has a value of 1, 2 or 3 and PA2 A3) optionally isocyanate-reactive compounds other than A2), and PA1 B) 20 to 95 wt %, based on the weight of A) and B), of at least one hydrolyzable silane corresponding to formula (II) EQU QSi(OX).sub.3 (II), wherein PA1 X represents C.sub.1 to C.sub.4 alkyl and PA1 Q represents H, C.sub.1 to C.sub.8 alkyl, phenyl, methoxy, ethoxy, 3-glycidyloxypropyl, 3-aminopropyl and methacryloxypropyl and/or hydrolyzates/condensates…