Aqueous coating compositions for temporary protection

C - Chemistry – Metallurgy – 08 – F

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117/183, 400/300

C08F 220/20 (2006.01) C08L 35/02 (2006.01) C09D 5/00 (2006.01) C09D 133/06 (2006.01)

Patent

CA 1236609

ABSTRACT COATING COMPOSITIONS Aqueous compositions suitable for forming on a substrate a temporary protective coating, which can subsequently be removed by treatment with an aqueous alkaline solution, comprise a sterically stabilised dispersion in an aqueous medium of particles of size range 0.1 - 10 um of a polymer derived from monomers including at least one acrylic monomer and from 5% to 40%, based on the total weight of monomers, of an ethyl- enically unsaturated monocarboxylic acid, or an equivalent proportion of an unsaturated polycarboxylic acid.

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