Abstract: Described herein are isomorphic blends of poly(phenylene oxide) and poly(aryl ether ketones) having less than about 30 mole percent and preferably less than about 25 mole percent of keto groups based on the total keto and ether groups. The blends are particularly desirable for use as an electrical insulation for electrical conductors.

Abstract: Water or gas containing organic impurities is purified by contact with a poly(trialkylsilylpropyne), such as poly[1-(trimethylsilyl)-1-propyne], operating as a bulk absorbent. Regeneration of the absorbent can be by vacuum or a stream of air.

Abstract: Compositions useful in decomposition molding procedures such as destructive foam casting or ceramic or metallic powder sintering are provided by blends of polymers having greater than 50 weight percent propylene carbonate units and polymers having greater than 50 weight percent methyl methacrylate units. Such blends exhibit an unexpectedly even decomposition profile over the range of temperatures at which their constituent polymers each decompose relatively rapidly. The controlled decomposition rate reduces problems in destructive foam casting and ceramic or metallic powder molding caused by sudden release of gases by the foam pattern or the polymer binder. Preferred blends contain 35 to 65 weight percent poly(methyl methacrylate) and 65 to 35 weight percent poly(propylene carbonate), and very even decomposition behavior is exhibited by blends of 35 to 45 weight percent poly(methyl methacrylate) and 65 to 55 weight percent poly(propylene carbonate).

Abstract: A process for producing cellular foamed articles from high temperature engineering polymers wherein polymeric blowing agents are utilized to expand the polymers. The process comprises mixing a first polymer capable of being foamed with a second polymer comprising at least one poly(alkylene carbonate) to provide a polymer blend; heating the polymer blend to a temperature sufficient to melt the polymer to be foamed and to decompose the second polymer to form gas inclusions within the first polymer; expanding the melted first polymer containing the gas inclusions to form a foamed article; and cooling the foamed article to a temperature below the melting or softening point of the foamed article. Polymers which may be foamed according to the process include those polymers which can tolerate processing temperatures in excess of 260.degree. C.

Abstract: Described herein are solutions for coating compositions comprising at least one select polyarylethersulfone dissolved in a solvent comprising methylene chloride or N,N-dimethylformamide. These solutions are useful for preparing films, adhesives anisotropic membranes or hollow fibers.

Abstract: Polymeric compositions are provided which include blends of polymers of vinyl acetate and polymers of propylene carbonate. These polymer blends exhibit excellent mechanical compatibility and are useful in molding structures, such as films, or in compounded formulations, such as emulsions and adhesives. These blends exhibit enhanced toughness superior to either of the constituent polymers alone.

Abstract: This invention is directed to novel crystalline chain extended polymers containing segments of crystalline poly(aryl ether ketones). The novel materials are easy to prepare and display excellent toughness, fabricability and very good high temperature and solvent resistance.

Abstract: Described herein are crystalline block polymers and chain extended polymers containing blocks of crystalline poly(aryl ether ketones). Also, described herein are monomers and oligomers suitable for preparing the crystalline block polymers and chain-extended polymers. Further, described herein are methods for producing the crystalline block and chain-extended polymers, as well as the monomers and oligomers.

Abstract: Described herein are miscible blends of polycarbonomides, defined as amide and/or imide containing polymers, and a polyarylate or arylate-carbonate copolymer which are useful in the manufacture of extruded sheets, high temperature connectors, aircraft and mass transportation vehicle interiors, injection molded articles, and extruded profiles and thermoformable articles.

Abstract: Compositions useful in decomposition molding procedures such as destructive foam casting or ceramic or metallic powder sintering are provided by blends of polymers having greater than 50 weight percent propylene carbonate units and polymers having greater than 50 weight percent methyl methacrylate units. Such blends exhibit an unexpectedly even decomposition profile over the range of temperatures at which their constituent polymers each decompose relatively rapidly. The controlled decomposition rate reduces problems in destructive foam casting and ceramic or metallic powder molding caused by sudden release of gases by the foam pattern or the polymer binder. Preferred blends contain 35 to 65 weight percent poly(methyl methacrylate) and 65 to 35 weight percent poly(propylene carbonate), and very even decomposition behavior is exhibited by blends of 35 to 45 weight percent poly(methyl methacrylate) and 65 to 55 weight percent poly(propylene carbonate).

Abstract: Described herein are novel poly(aryl ether) polymers that contain naphthalene, terephenylene and/or anthracenylene units within their chains. Representative polymers are tough materials having excellent high temperature, oxidative and chemical resistance, and easy melt fabricability.

Abstract: Described herein is a shaped article formed from a blend of a poly(aryl ether) resin and an aromatic polycarbonate resin and/or a polycarbonate resin. An article molded from such a blend has improved hydrolytic stability as compared with an article molded from the constitutent components of the blend.

Abstract: Described herein are tough solvent resistant materials from a crystallizable, crosslinkable resin mixture comprising a particular polyarylether and a crystallization promoting plasticizer, and reinforced composites made from such resin mixture.

Abstract: Described are blends of a biphenyl containing poly(acryl ether sulfone) and a poly(acryl ether ketone). These blends exhibit improved mechanical properties and environmental stress rupture resistance.

Abstract: Described herein are miscible blends of select poly(aryl ether sulfones). These blends are suitable for printed wiring board substrates, flexible printed circuit boards, electrical connectors and fabricated articles requiring high heat and chemical resistance, and good dimensional and hydrolytic stability.

Abstract: New and improved orthopedic/orthotic splint materials are provided which exhibit excellent elasticity, do not easily fingerprint, retain adhesion and have high toughness and flexural strength. The materials employed in the casts of this invention are blends of an aliphatic polyester, such as poly(epsilon-caprolactone), with certain thermoplastic polyurethanes having a hard block segment and a soft block segment, which possess a combination of desirable properties not heretofore found in cast materials.

Abstract: Described herein is the addition of polyhydroxyethers to blends of polyarylate and polyamide. The resulting blend results in significant increases in ultimate elongation, tensile strength, notched izod impact strength, tensile impact strength, and injection molded material uniformity.

Abstract: Described herein are crystalline block polymers and chain extended polymers containing blocks of crystalline poly(aryl ether ketones). Also, described herein are monomers and oligomers suitable for preparing the crystalline block polymers and chain-extended polymers. Further, described herein are methods for producing the crystalline block and chain-extended polymers, as well as the monomers and oligomers.

Abstract: Described herein is a shaped article formed from a blend of a poly(aryl ether) resin and an aromatic polycarbonate resin and/or a polyacrylate resin. An article molded from such a blend has improved hydrolytic stability as compared with an article molded from the constituent components of the blend.

Abstract: Described herein is a composition useful for making circuit board substrates and electrical connectors comprising a blend of a poly(ether sulfone) and polusulfone. Also described herein is a circuit board substrate and an electrical connector made from such a blend.