Abstract: Impact resistant polycarbonate blends, which may be extruded without pre-drying, are prepared from an aromatic polycarbonate, an aromatic polyester, a carbon monoxide polymer and a polyalkyleneoxide rubber, and optionally, a grafted copolymer or mixture of grafted copolymers.

Abstract: A polycarbonate blend of good impact strength, solvent resistance and weldline properties is prepared by admixing with polycarbonate a grafted olefin/carbon monoxide copolymer and, optionally, a toughening agent such as a rubber.

Abstract: Impact resistant polycarbonate blends, which may be extruded without pre-drying, are prepared from an aromatic polycarbonate, an aromatic polyester, and a polyalkyleneoxide rubber, and optionally, a grafted copolymer or mixture of grafted copolymers.

Abstract: A flame retardant, impact resistant carbonate polymer composition comprising a mixture of one or more carbonate polymers, an impact modifying quantity of a rubbery polymer containing residual ethylenic unsaturation, a fluorine containing polymer of the fibril forming type flame retarding quantities of an aromatic sulfur containing compound and a chlorine or bromine substituted organic compound, and, optionally a melt stability enhancing quantity of an organoposphorus compound.

Abstract: A flame retardant, impact resistant carbonate polymer composition comprising a mixture of one or more carbonate polymers, an impact modifying quantity of a rubbery polymer containing residual ethylenic unsaturation and a fluorine containing polymer of the fibril forming type.

Abstract: This invention is a polyurethane and/or polyurea elastomer prepared in the reaction of:(a) an organic polyisocyanate;(b) a chain extender and(c) a polyether having a molecular weight from about 500 to about 10,000, which polyether is a block copolymer of ethylene oxide and butylene oxide comprising an internal poly(EO) block bonded on each side to a poly(BO) block, wherein oxybutylene moieties comprise from about 10 to about 90 percent of the total weight of the polyether.

Abstract: The disclosed invention is a polyurethane and/or polyurea polymer which is the reaction product of a reaction mixture comprising(a) a polyisocyanate, and(b) a polyether polyahl having an equivalent weight of at least about 2000 and a level of unsaturation of less than 0.1% by weight.The polyurethane and/or polyurea polymer of this invention is an elastomeric material having surprisingly good properties. In particular, the polyurethane and/or polyurea is highly resilient and has excellent tensile properties.

Abstract: A polyurea or polyurea-polyurethane elastomer which is the reaction product of reaction mixture comprising (a) an organic polyisocyanate, (b) a low equivalent weight aromatic amine chain extender in an amount from about 15 to 60 parts by weight based on the weight of isocyanate reactive components present in said reaction mixture, (c) an amount of an amine-initiated polyol sufficient to provide the elastomer with a measurably decreased brittleness at demold as compared to a similar elastomer prepared in the absence of said amine initiated polyol.