Abstract: This invention discloses novel composition comprising a blend of a poly(aryl ether ketone) and from about 1% to about 50% of poly(phenylene oxide). The blends have high use temperatures, abraision resistance and solvent resistance, and are extrudable. Further, the blends can be crosslinked.

Abstract: This invention provides a method for the preparation of an article from a blend of at least two molecularly compatible polymers by treating the blend with a solvent which is a solvent for one of the polymers and a non-solvent for the other. The solvent can be removed while the article is restrained from undergoing substantial shrinkage, in which case a microporous article is obtained. Alternatively, the solvent can be removed while the article is permitted to shrink. In this case high shrinkage force (also referred to as recovery force) results which can be utilized to apply the article to a substrate. The final and intermediate articles are novel. In a preferred embodiment, the invention provides a microporous article having an average pore size of about 0.005 microns to about 1 micron.

Abstract: This invention provides a method for the preparation of an article from a blend of at least two molecularly compatible polymers by treating the blend with a solvent which is a solvent for one of the polymers and a non-solvent for the other. The solvent can be removed while the article is restrained from undergoing substantial shrinkage, in which case a microporous article is obtained. Alternatively, the solvent can be removed while the article is permitted to shrink. In this case high shrinkage force (also referred to as recovery force) results which can be utilized to apply the article to a substrate. The final and intermediate articles are novel. In a preferred embodiment, the invention provides a microporous article having an average pore size of about 0.005 microns to about 1 micron.

Abstract: A polymer blend which is capable of exhibiting an anisotropic melt phase and the ability to form shaped articles having satisfactory mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 75 percent by weight, based upon the total weight of the blend, of a polyalkylene terephthalate wherein the alkylene units contain 2 to 5 carbon atoms and approximately 25 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend.

Abstract: A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form shaped articles having satisfactory mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 75 percent by weight, based upon the total weight of the blend, of a sulfone polymer which is selected from the group consisting of polyether sulfone having recurring units of the formula ##STR1## polysulfone having recurring units of the formula ##STR2## a mixture of the above sulfone polymers, and approximately 25 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend.

Abstract: A polymer blend which is capable of exhibiting an anisotropic melt phase and the ability to form shaped articles having improved mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 75 percent by weight, based upon the total weight of the blend, of a polycarbonate and approximately 25 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend.

Abstract: A polymer blend comprising a first copolymer and a second copolymer and having improved impact resistance is provided. The first copolymer has recurring units which consist essentially of oxymethylene groups having the formula --OCH.sub.2 --interspersed with ##STR1## groups, where each R.sub.1 and R.sub.2 is selected from the group consisting of hydrogen, lower alkyl radicals, and halogen-substituted lower alkyl radicals, each R.sub.3 is selected from the group consisting of methylene, oxymethylene, lower alkyl and haloalkyl substituted methylene, and lower alkyl and haloalkyl substituted oxymethylene radicals, and n is an integer from zero to three, each lower alkyl radical having one to two carbon atoms. The oxymethylene units comprise approximately 85 to approximately 99.9 mole percent of the recurring units of the first copolymer. The second copolymer has recurring units which consist essentially of oxymethylene groups having the formula--OCH.sub.2 --interspersed with ##STR2## groups where R.sub.1, R.sub.

Abstract: A polymer blend which is capable of exhibiting an anisotropic melt phase, improved processability characteristics, and the ability to form molded articles having satisfactory mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 95 percent by weight, based upon the total weight of the blend, of a polyarylene sulfide and approximately 5 to approximately 95 percent by weight, based upon the total weight of the blend, of a melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend. Blend compositions containing high concentrations of wholly aromatic polyester (i.e., at least 60 percent by weight wholly aromatic polyester) can be used to form fibers and films.

Abstract: A polymer blend which is capable of exhibiting an anisotropic melt phase and which is capable of forming shaped articles which exhibit satisfactory mechanical properties is provided. The polymer blend comprises approximately 5 to approximately 95 percent by weight, based upon the total weight of the blend, of a first melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend and which comprises not less than approximately 10 mole percent of recurring units which include a naphthalene moiety, and approximately 5 to approximately 95 percent by weight, based upon the total weight of the blend, of a second melt processable wholly aromatic polyester which is capable of forming an anisotropic melt phase apart from the blend (as defined).

Abstract: Ferrocene ionic charge complexes of benzoquinones having utility as optical filters capable of absorbing electromagnetic radiations within the range of 3500 - 6000 Angstrom. The active material can be utilized in a suitable optical system as a liquid filter in the form of a solution, emulsion, gel, etc., or as a film together with suitable light permeable backing or support members.

Abstract: Ferrocene ionic charge complexes of benzoquinones having utility as optical filters capable of absorbing electromagnetic radiations within the range of 3500-6000 Angstrom. The active material can be utilized in a suitable optical system as a liquid filter in the form of a solution, emulsion, gel, etc., or as a film together with suitable light permeable backing or support members.