Elastomer modified epoxy resin for powder coating compositions

Details Elastomer modified epoxy resin for powder coating compositions Elastomer modified epoxy resin for powder coating compositions

C - Chemistry, Metallurgy

09

D

400/3038

C09D 163/00 (2006.01) C08G 59/06 (2006.01) C09D 151/00 (2006.01)

Patent

CA 2039273

T 4664 A B S T R A C T ELASTOMER MODIFIED EPOXY RESIN FOR POWDER COATING COMPOSITIONS A method for dispensing and stabilizing a carboxy- functionalized block copolymer in an epoxy resin is provided comprising the steps of: (a) dispersing from 5 to 30 weight percent of a carboxy-functionalized hydrogenated diolefin- monoalkenylarene block copolymer in a liquid epoxy resin to produce an elastomer-dispersed epoxy resin composition; (b) contacting the elastomer-dispersed epoxy resin composition and from 15 to 30 weight percent, based on the weight of the elastomer-modified epoxy resin composition, of a polyhydric phenolic compound in the presence of an advancement catalyst at a temperature within the range of from 40 °C to 200 °C for time effective for producing a solid elastomer-modified epoxy resin having an epoxy equivalent weight in the range of from 500 to 1,500; and (c) recovering said solid elastomer-modified epoxy resin. VM1/T4663FF

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