Abstract: Elastomeric ethylene/alkyl acrylate/1,4-butenedioic acid ester copolymers are stabilized against variations in cure characteristics by reaction of such polymers with amines, perferably during isolation of such polymers. In addition, substantial increase in the molecular weight of such polymers is achieved if the amines are di- or polyamines.

Abstract: The antisticking and antiblocking properties of ethylene/methyl or ethyl acrylate/1,4-butenedioic acid monoalkyl ester terpolymers is improved by mixing with said terpolymer a small quantity of a C.sub.12 -C.sub.24 straight chain alkyl or alkenyl acid phosphate or a C.sub.12 -C.sub.24 straight chain alkyl- or alkenyloxypoly(ethyleneoxy) acid phosphate.

Abstract: Solventless process of reacting polyamine having two primary amino groups adsorbed on a particulate carrier with carbon dioxide to obtain the free-flowing corresponding polyamine carbamate-carrier mixture.

Abstract: A fluoroelastomer composition which is very useful for the manufacture of cured fluoroelastomer articles having desirable chemical and heat resistance combined with excellent low temperature flexibility can be prepared by blending specified amounts of the following: (A) an elastomeric copolymer of tetrafluoroethylene, a perfluoroalkyl perfluorovinyl ether and a bromine-containing olefin and (B) a certain fluoropolymer having perfluoroalkyl end groups containing an iodine atom; and when making the cured articles, it also preferred to add (C) an organic peroxide curing agent, (D) a co-curing agent such as triallyl isocyanurate and (E) a suitable metal compound such as a divalent metal oxide or hydroxide.