Abstract: The present invention relates to a method of terminating a free radical initiated emulsion polymerization by using a shortstopping agent selected from the group consisting of isopropylhydroxylamine and salts thereof. One advantage in using these shortstopping agents is these shortstopping agents do not contribute to the generation of volatile nitrosamines.

Abstract: Rubber chemicals, such as accelerators, are often sold in rodform binders. In order for such rods of a rubber chemical to maintain their structural integrity a polymeric binder is utilized. An improved binder for chemical agents is disclosed herein. This binder is a blend of a graft copolymer and a random copolymer.

Abstract: Acrylonitrile is a monomer that is widely used in the production of a vast variety of polymers. Undesirable quantities of residual unpolymerized acrylonitrile are often present in polymers. The residual or free acrylonitrile in polymers can be reacted with certain thiols in order to reduce their content in the polymer. In the reaction between these thiols and acrylonitrile products are formed which exhibit antioxidant ability.

Abstract: A method of preparing a resin by free radical emulsion polymerizing a monomer mixture comprised of (A) a water soluble bifunctional monomer, (B) a hard segment hydrophobic enhancing monomer, (C) optionally, a soft segment hydrophobic enhancing monomer, and (D) a hydrophilic enhancing organic acid. The particular advantage in the invention is the utilization of the water soluble bifunctional monomer which has the purpose of essentially eliminating the necessity of additional emulsifying agents. The resin prepared thereby is designed to be suitable for a water reducible composition.