Thermosetting coating composition

C - Chemistry – Metallurgy – 08 – G

Patent

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C08G 59/16 (2006.01) C08G 18/32 (2006.01) C08G 18/42 (2006.01) C08G 18/64 (2006.01) C08G 18/79 (2006.01) C08G 18/80 (2006.01) C08G 59/12 (2006.01) C08G 59/42 (2006.01) C08G 59/62 (2006.01) C08G 59/68 (2006.01)

Patent

CA 1227896

-62- Abstract of the Disclosure Novel solvent-based thermosetting composition comprising (a) hydroxy functional epoxy ester resin of number average molecular weight (Mn) between about 1,000 and about 5,000, comprising the reaction product of diepoxide (a) in chain extension reaction with (i) diphenol, or (ii) dicarboxylic acid, or (iii) both, and (b) in chain termination reaction with acid component comprising hydroxy functional acid and optionally further comprising fatty acid; and (b) polyfunctional, hydroxy- reactive crosslinking agent, for example, aminoplast crosslinking agent or blocked polyisocyanate crosslinking agent comprising isocyanate groups blocked by reaction with an active hydrogen bearing blocking agent. Coating composition may be formulated as primer sprayable with conventional spraying equipment.

470146

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