C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/14 (2006.01) B05D 1/38 (2006.01) C08G 18/62 (2006.01)
Patent
CA 2106048
13 Herberts Gesellschaft mit beschrankter Haftung A B S T R A C T Coating agents which can be used for the preparation of transparent topcoats on multilayer coatings. The coating agents contain a mixture of A) 40 - 60 wt. -% of (meth)acrylic copolymerisates containing hydroxy groups, obtainable by copolymerisation of a1) 50 - 70 wt.-% of one or more acrylic esters admixed with one or more acrylic acid hydroxyalkyl esters in an amount furnishing a hydroxy number of 40 - 70 mg KOH/g with a2) 30 - 50 wt.-% of one or more methacrylic esters admixed with one or more methacrylic acid hydroxyalkyl esters in an amount furnishing a hydroxy number of 180 - 450 mg KOH/g and B) 60 - 40 wt.-% of (meth)acrylic copolymerisates containing hydroxy groups, obtainable by copolymerisation of b1) 27 - 40 wt.-% of one or more acrylic acid alkyl esters, b2) 49 - 55 wt.-% of one or more methacrylic esters admixed with one or more methacrylic acid hydroxyalkyl esters in an amount furnishing a hydroxy number of 240 - 300 mg KOH/g, b3) 1 - 3 wt.-% of acrylic acid, b4) 10 - 15 wt.-% of vinyl esters of aliphatic saturated monocarboxylic acids, wherein the carboxyl group is bound to a tertiary carbon atom.
Bederke Klaus
Dahm Ralf Michael
Herrmann Friedrich
Kerber Hermann
Schonrock Hans-Martin
Herberts Gesellschaft Mit Beschrankter Haftung
Kirby Eades Gale Baker
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