Storage stable, heat curable, coating composition

Details Storage stable, heat curable, coating composition Storage stable, heat curable, coating composition

C - Chemistry, Metallurgy

09

D

117/195, 400/551

C09D 175/04 (2006.01) C08G 18/63 (2006.01) C08G 18/80 (2006.01) C09D 151/08 (2006.01) C09D 175/08 (2006.01)

Patent

CA 1291839

Abstract of the Disclosure This invention provides a novel storage stable, heat curable, coating composition comprising (a) a ketoxime blocked polyisocyanate, (b) a polyol containing 2-4 terminal OH groups, (c) at least one ethylenically unsaturated monomer, oligomer or prepolymer of the formula: Image wherein R is H or CH3, R1 is an organic moiety and n is 1 to 4, (d) a free radical thermal initiator for (c), and (e) a deblocking and curing catalyst for (a). The reaction between (a) and (b) in the composition results in a thermoset material which is believed to for an interpenetrating network with the resulting thermoset. from (c) on thermal curing. The coating composition which is airless sprayable, storage stable and can be cured at low temperatures (about 80 - 120°C) provides a coating having good adhesion to metal surfaces with good abrasion resistance and good corrosion protection.

534120

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