Abstract: This invention concerns an improved PEM for fuel cell applications such that the membrane is more robust. Specifically, this invention provides PEM in MEA systems that have nano-particles carrying proton conducting groups, and improved dimensional stability relative to conductivity. This invention provides a composition of matter for a high proton conductance, solid polymer electrolyte membrane, said membrane comprising: A) a nano-additive carrying proton conducting groups having a size from about 1 nm to about 1,000 run; B) a carrier polymer for the nano-additive of Part A; and C) a proton exchange membrane (PEM) or membrane electrode assembly (MEA) formed by mixing the components of Part A and Part B above. These proton conducting groups are contributed by POSS-based nano-additives or cyclic phosphazene-based nano-additives or small molecules carrying sulfonic acid groups in fuel cells or batteries.

Abstract: A composite material useful for fabricating useful articles from foundry industry by-products, while reducing environmental and economic burdens associated with current disposal practices in the foundry industry, includes a polymer matrix having foundry waste fines uniformly distributed throughout the matrix. Useful articles that can be fabricated from the composite materials of this invention include various high quality weights and counterweights, vibration dampers, sound absorbers, electrically conductive plastics, electromagnetic impulse shields, static dissipative articles and magnetic articles.

Abstract: A carbonate polymer such as a bisphenol-A homopolycarbonate containing a small amount of (1) a metal salt of an aromatic sulfonamide or a metal salt of an inorganic acid, such as a metal salt of a perhalometalate complex, (2) a halogenated organic compound and, (3) a melamine, exhibits improved flame retardant properties.

Abstract: An additive concentrate composition is composed of a carbonate polymer, a powdered additive such as a pigment, and a mixture of a film-forming adherent such as an esterified polysaccharide and a liquid diluent such as an epoxidized vegetable oil or a bis(phosphorinane), in amounts preferably less than or equal to about 1 percent based on the weight of carbonate polymer and the additive. Alternatively, the epoxidized vegetable oil may optionally be used as a bonding agent.The bonding agents have desirable properties that do not adversely affect the physical properties of the carbonate polymer in end use, and are thermally stable and color-stable.

Abstract: A carbonate polymer such as a bisphenol-A homopolycarbonate containing a small amount of a metal salt of an aromatic sulfonamide, a metal salt of a perhalometalate complex, or a metal salt of an inorganic acid, a halogenated organic compound and, optionally, a melamine, exhibits improved flame retardant properties.

Abstract: Carbonate polymer compositions comprise a carbonate polymer having dispersed therein a concentrate consisting essentially of a copolymer of an alkenyl-aromatic monomer and an .alpha.,.beta.-olefinically unsaturated nitrile monomer and a powdered or crystalline additive. The concentrates allow for good dispersion of additives in the carbonate polymer, provide for clean and efficient use of additives, and are easily processable. The copolymeric base resin does not deleteriously affect the good physical properties of the carbonate polymer with which it is blended at typical additive let down levels.

Abstract: A polycarbonate such as bisphenol-A homopolycarbonate containing a small amount of a crown salt, e.g., an 18-crown ether (potassium fluoroborate), resists combustion upon exposure to a low temperature ignition source.

Abstract: A polycarbonate such as a bisphenol-A homopolycarbonate containing a small amount of an aromatic bis(cyclic phosphate) such as 2,2'-[(1-methylethylidene)bis(4,1-phenyleneoxy-2,1-ethanediyloxy)]bis(5,5- dimethyl-2,2'-dioxo-1,3,2-dioxaphosphorinane) exhibits improved thermal stability.

Abstract: A polycarbonate such as bisphenol-A homopolycarbonate containing a small amount of a barbituate, e.g., sodium 2-thiobarbituate, resists combustion upon exposure to a low temperature ignition source.

Abstract: A polycarbonate such as a bisphenol-A homopolycarbonate containing a small amount of a metal salt of a perhalometalate complex, e.g., the potassium salt of perfluorotitanate, resists combustion upon exposure to a low temperature ignition source.

Abstract: A polycarbonate such as a bisphenol-A homopolycarbonate containing amounts of a metal salt of perfluoroborate, e.g., the potassium salt of perfluoroborate and an organosilane, e.g., glycidoxypropyl trimethoxysilane, resists combustion upon exposure to a low temperature ignition source.

Abstract: A polycarbonate such as a bisphenol-A homopolycarbonate containing a small amount of a salt of a tetrahydrocarbyl borate e.g., sodium tetraphenyl borate, resists combustion upon exposure to a low temperature ignition source.

Abstract: A polycarbonate such as a bisphenol-A homopolycarbonate containing a small amount of an aromatic bis(cyclic phosphite) such as 2,2'---(1-methylethylidene)bis(4,1-phenyleneoxy-2,1-ethanediyloxy)]bis(5,5 -dimethyl-1,3,2-dioxaphosphorinane) exhibits improved processability and thermal stability.

Abstract: A polycarbonate such as a bisphenol-A homopolycarbonate containing a small amount of a metal salt of an aromatic sulfonamide, e.g., the sodium salt of saccarin or a derivative thereof, resists combustion upon exposure to a low temperature ignition source.