C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 133/06 (2006.01) B05D 1/36 (2006.01) B05D 7/00 (2006.01) C09D 147/00 (2006.01) C09D 151/04 (2006.01) C08L 61/20 (2006.01)
Patent
CA 2118125
Abstract The invention relates to a process for the pro- duction of two-coat finishes, in which a pigmented aqueous basecoat is applied, the basecoat obtained is coated over with a clearcoat, and basecoat and clearcoat are baked together. The process according to the invention is distinguished in that the aqueous basecoat contains an emulsion polymer which has been prepared in the presence of a reaction product (A), the reaction product (A) being obtainable by reacting (i) a butadiene homo- or copolymer, (ii) at least one fatty acid of a drying oil or at least one drying oil or a mixture of at least one fatty acid of a drying oil and at least one drying oil, and (iii) maleic anhydride in a mass ratio of (i):(ii):(iii) = 1.0:0.1 to 0.6:0.1 to 0.6 and, after adding a basic aqueous solution, con- verting the reaction product to an aqueous dispersion.
Gast Achim
Lettmann Bernhard
Peitz Birgit
Piontek Susanne
Rink Heinz-Peter
Basf Lacke + Farben Aktiengesellschaft
Fetherstonhaugh & Co.
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