Curable compositions containing a polyepoxide and a...

Details Curable compositions containing a polyepoxide and a... Curable compositions containing a polyepoxide and a...

C - Chemistry, Metallurgy

08

G

154/108, 117/183

C08G 59/50 (2006.01) C08G 59/06 (2006.01) C08G 59/32 (2006.01) C08G 59/38 (2006.01) C08G 59/62 (2006.01) C08K 5/42 (2006.01) H01B 3/40 (2006.01)

Patent

CA 1242046

ABSTRACT Curable compositions are disclosed which comprise at least one polyglycidyl ether such as the triglycidylether of tris(hydroxyphenyl)methane and at least one halogenated dihydric phenol such as tetra- bromobisphenol A. The polyglycidyl ether and the halogenated dihydric phenol are present in quantities such that the ratio of phenolic hydroxyl groups to epoxide groups is from 0.7:1 to 1.1:1. These compo- sitions can be cured by heating in the presence or absence of catalyst for reacting epoxy groups with phenolic hydroxyl groups. These compositions are particularly useful in the preparation of electrical laminates.

491900

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