C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 163/00 (2006.01) C09D 123/06 (2006.01) C09D 157/00 (2006.01)
Patent
CA 2632802
Coating composition includes curable epoxy resin in solid form, curing agent for the epoxy resin, and filler. Further, there is a polyolefin containing component having a compatibilizer polymer that is a modified polyolefin, a mixture of a polyolefin or olefin copolymer with a functionalized rubber, or both. The modified polyolefin and functionalized rubber contain groups reactive with either the epoxy resin or the epoxy curing agent. A polyolefin-based portion that amounts to at least 50% by weight of the polyolefin containing component, and an epoxy-based portion that amounts to at least 50% by weight of the curable epoxy resin have viscosities such that the difference between the viscosity of the polyolefin-based portion and the viscosity of the epoxy-based portion, expressed as a percentage based on the lower of the two viscosities, is less than 40%. These viscosities are measured by ASTM D4440 at the Vicat softening points, as measured by ASTM D1525.
Cunningham Nicolas
Edmondson Stephen J.
Wong Dennis T.h.
Ridout & Maybee Llp
Shawcor Ltd.
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