C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
400/1347
C09D 133/06 (2006.01) C09D 4/06 (2006.01) C08L 1/14 (2006.01)
Patent
CA 1176779
- 11 - ABSTRACT OF THE INVENTION ACRYLIC COATING COMPOSITIONS An acrylic coating composition suitable for use as an automotive refinish lacquer comprises a mixture of (a) a solution in volatile organic solvent of an acrylic copolymer of 75 - 90% methyl methacrylate, 1.5 - 6.0% dimethylaminoethyl methacrylate and 8 - 23.5% of butyl acrylate, butyl methacrylate or lauryl methacrylate, the copolymer having a Tg of 80° - 95°C; (b) a solution in volatile organic solvent of cellulose acetate butyrate, the cellulose acetate butyrate having a viscosity of 0.5 - 5 sec and a hydroxyl value of 2 maximum; and (c) a monomeric ester plasticiser such that the non-volatile constituents of (a), (b) and (c) comprise respectively 43.5 - 64.0%, 15.0 - 25.5% and 2.10 - 31,5% of the total weight of non-volatile material of (a) plus (b) plus (c).
396096
Hall Derrard M.
Kemp Roy A.
Such Christopher H.
Barlow Charles Brian
Ppg Industries Australia Pty Ltd
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