Abstract: Graft polymers are prepared by reacting thermoplastic copolymers comprised of alkenyl aromatic monomers and carboxylic acid moieties such as .alpha.,.beta.-unsaturated dicarboxylic acid anhydrides with mono-amine functionalized polyoxyalkylene ethers. The graft polymers are useful for the production of formed products such as injection molded articles and in blends or alloys with other thermoplastic resins such as polystyrene.

Abstract: Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the amine either before or after combination with the organic liquid, the absorbents of the invention can be used in many forms. The polymeric resin component can be processed into any desired form (shaped article, solution), and the di- or polyamine can then be added to generate the absorbent in situ. Unlike spent absorbent compositions of the prior art, those of the invention can be converted to pumpable liquids by heating or by adding a gel-breaking agent to liquify the gel. A useful absorbent is recovered from the liquid by precipitation or distillation.

Abstract: Flame-retardant, thermoplastic copolymers and processes for making them are disclosed. The compositions are copolymers of a vinyl aromatic monomer, a vinyl phosphonic acid derivative, and optionally, an unsaturated organic diacid, ester, or anhydride that are grafted onto a rubber. Processes for making polymers having high molecular weight, good mechanical properties, and a high level of evenly distributed, chemically incorporated vinyl phosphonate flame retardant are also disclosed.

Abstract: Flame-retardant, thermoplastic copolymers and processes for making them are disclosed. The compositions are copolymers of a vinyl aromatic monomer, a vinyl phosphonic acid derivative, and optionally, an unsaturated organic diacid, ester, or anhydride that are grafted onto a rubber. Processes for making polymers having high molecular weight, good mechanical properties, and a high level of evenly distributed, chemically incorporated vinyl phosphonate flame retardant are also disclosed.

Abstract: Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the amine either before or after combination with the organic liquid, the absorbents of the invention can be used in many forms. The polymeric resin component can be processed into any desired form (shaped article, solution), and the di- or polyamine can then be added to generate the absorbent in situ. Unlike spent absorbent compositions of the prior art, those of the invention can be converted to pumpable liquids by heating or by adding a gel-breaking agent to liquify the gel. A useful absorbent is recovered from the liquid by precipitation or distillation.

Abstract: Compositions useful as absorbents for organic liquids are disclosed. A diamine or polyamine is reacted with a polymeric resin that contains phosphonic acid groups to produce the absorbent compositions of the invention. Because the polymeric resin component can be combined with the amine either before or after combination with the organic liquid, the absorbents of the invention can be used in many forms. The polymeric resin component can be processed into any desired form (shaped article, solution), and the di- or polyamine can then be added to generate the absorbent in situ. Unlike spent absorbent compositions of the prior art, those of the invention can be converted to pumpable liquids by heating or by adding a gel-breaking agent to liquify the gel. A useful absorbent is recovered from the liquid by precipitation or distillation.