Tough epoxy casting resins

Details Tough epoxy casting resins Tough epoxy casting resins

C - Chemistry, Metallurgy

08

L

400/3021, 400/47

C08L 9/00 (2006.01) C08L 53/00 (2006.01) C08L 63/00 (2006.01) C08L 63/02 (2006.01) C08L 63/10 (2006.01)

Patent

CA 2010649

K- 17466/+ Tough epoxy casting resins Abstract Curable compositions containing A) an epoxy resin having on average more than one epoxy group per molecule, B) a carboxylic anhydride curing agent for component A) and C) about 5 to 40% by weight, relative to the amount of the components A), B) and C), of a liquid mixture of C1) a polyalkylene glycol based on polypropylene glycol or polybutylene glycol having two to about six hydroxyl, carboxyl, carboxylic anhydride or glycidyl end groups and of C2) an elastomeric copolymer based on butadiene, a polar, ethylenically unsaturated comonomer and, if appropriate, further ethylenically unsaturated comonomers having carboxylic acid, hydroxyl, mercapto or glycidyl ether end groups are described. Components C1) and C2) can also occur together in a segmented copolymer.

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