Liquid polymer vulcanizates prepared via a casting process

Details Liquid polymer vulcanizates prepared via a casting process Liquid polymer vulcanizates prepared via a casting process

C - Chemistry, Metallurgy

08

L

400/4702

C08L 63/00 (2006.01)

Patent

CA 1039438

IMPROVED LIQUID POLYMER VULCANIZATES PREPARED VIA A CASTING PROCESS ABSTRACT OF THE INVENTION A rubbery liquid polymer vulcanizate is prepared by admixing a major amount of a liquid carboxyl-terminated polymer, a minor amount of a dihydric compound, and a small amount of an amine having selectivity for a carboxyl-epoxide reaction with an epoxy resin having about two epoxide Image groups per molecule, casting the mixture in a mold, and heating it at from about 110°C. to about 180°C. until the composition cures. The vulcanizate has improved elastomeric properties, and is characterized by having two distinct polymer phases and having an ultimate tensile strength of over 1000 pounds per square inch and an elongation of about 140 percent. - 1 -

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