Low shrinkage unsaturated polyester resin compositions

Details Low shrinkage unsaturated polyester resin compositions Low shrinkage unsaturated polyester resin compositions

C - Chemistry, Metallurgy

08

L

400/4213

C08L 67/06 (2006.01) C08F 299/04 (2006.01) C08L 63/04 (2006.01)

Patent

CA 1094723

ABSTRACT OF THE DISCLOSURE Unsaturated polyester resin compositions comprising: (a) an unsaturated polyester resin, (b) from 5 to 15 parts by weight for each 100 parts by weight of polyester resin (a), of vinyl chloride polymer, and (c) from 10 to 20 parts by weight for each 100 parts by weight of polyester resin (a), of an epoxy Novolak resin having an epoxy function higher than 2, or of a mixture of the letter with a liquid epoxy resin in such amount that the average epoxy function of the mixture be higher than 2. These compositions hardenable by means of peroxides have low shrinkage values on hardening and yield hardened products having high resistance to bending and to heat.

284021

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