C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 133/00 (2006.01) C09D 133/06 (2006.01) C09D 163/00 (2006.01) C09D 167/00 (2006.01) C08L 33/06 (2006.01)
Patent
CA 2062972
The present invention relates to coating agents containing A) one or more polymers containing carboxyl groups and having a number-average molecular weight of 500 to 8000 and an acid number of 15 to 200 mg of KOH/g as the essential binder component and B) one or more compounds containing epoxide groups as crosslinking agents, wherein the compound B containing epoxide groups is a copolymer containing epoxide groups, has a number-average molecular weight Mn of 300 to 5000, preferably 500 to 3500, and a heterogeneity (Mw/Mn), measured by gel permea- tion chromatography, of 3, preferably of 2, and has been prepared by continuous bulk polymerization at temperatures between 130 and 350°C and pressures above 1 bar. The invention also relates to processes for the preparation of the coating agent and the use of the coating agents in automobile refinishing.
Hoffmann Peter
Jung Werner Alfons
Kappes Elisabeth
Niessner Manfred
Basf Lacke + Farben Aktiengesellschaft
Fetherstonhaugh & Co.
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