C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 63/52 (2006.01) C08F 8/08 (2006.01) C08F 8/14 (2006.01) C08F 8/44 (2006.01) C09D 167/06 (2006.01)
Patent
CA 2147720
The present invention relates to a process for the production of oxidatively crosslinkable, water-dilutable binders by a) forming a copolymer having intramolecular carboxylic anhydride groups by copolymerizing anhydride-functional compounds, other olefin- ically unsaturated monomers and 5 to 50% by weight, based on the weight of the olefinically unsaturated monomers used for the production of the copolymers a), of monomers which cannot be homopolymerized under the reaction conditions, b) subsequently reacting by ring-opening esterification at least 50% of the anhydride groups present in the copolymer with one or more unsaturated monohydric alcohols, c) reacting by ring-opening esterification up to 50% of the anhydride groups with monohydric saturated alcohols having a molecular weight of 32 to 200 either before, during or after step b), d) optionally reacting 1 to 70% of the carboxyl groups formed in steps b) and c) with organic epoxide compounds and e) neutralizing at least a portion of the carboxyl groups formed in steps b) and c). The present invention also relates to the binders obtained by this process and to their use in water-dilutable lacquers and coating compositions.
Arning Eberhard
Blum Harald
Schneider Volker
Wamprecht Christian
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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