Abstract: Melt spinnable liquid crystal aromatic polyesters which are optically anisotropic in the melt phase are provided. The polyester is a poly [(1-phenylethylphenylene)/chlorophenylene terephthalate].

Abstract: Melt spinnable, liquid crystal aromatic polyesters which are optically anisotropic in the melt phase are provided.

Abstract: Method and apparatus for producing an electrical conductor are provided comprising a doped polymeric material and an encasement means substantially impermeable to the dopant, the encasement means having matching surfaces in contact with the polymeric material to reduce the loss of dopant and an inert gas to occupy any voids between the surfaces.

Abstract: Molded glass fiber parts are formed by depositing a phenolic resin and liquid polyisocyanate on the glass fibers as they are emitted from a fiber forming means, accumulating the glass fibers as a pack and molding the pack in contact with a tertiary amine to cure said resin and polyisocyanate and to produce a molded glass fiber part.

Abstract: A process is disclosed for curing a sand-furan resin mixture used in foundry practice to form cores and molds by the use of sulfur dioxide gas without forming sulfuric acid. Curing occurs when the furan resin, that is one containing a predominant amount of a furan moiety, is intermixed with a minor amount of a diisopropylbenzene monohydroperoxide (DIPBMHP) or diisopropylbenzene dihydroperoxide (DIPBDHP), or a mixture thereof. In addition to reacting with gaseous sulfur dioxide without forming sulfuric acid, these specific alkaryl hydroperoxides of which the monohydroperoxides have at least one alkyl ring substituent, have the peculiar characteristic of curing the resin in such a way that the DIPBMHP or DIPBDHP moiety becomes chemically bound in the cured resin. The result is a cured core or mold having a novel composition and superior physical properties compared to prior art cores and molds made with furan resins, in which the reaction with sulfur dioxide produces sulfuric acid.

Abstract: The invention relates to a method of preparing a composite suitable as an oxidizing component in a redox aqueous emulsion polymerization initiator starting with the relatively harsh oxidation of p-diisopropylbenzene with oxygen and involving a manipulative separation procedure for obtaining the effective oxidizing component. The invention also relates to the oxidizing component, the redox polymerization initiator and to the aqueous emulsion polymerization of selected unsaturated monomers.

Abstract: The invention relates to a method of preparing a composite suitable as an oxidizing component in a redox aqueous emulsion polymerization initiator starting with the relatively harsh oxidation of p-diisopropylbenzene with oxygen and involving a manipulative separation procedure for obtaining the effective oxidizing component. The invention also relates to the oxidizing component, the redox polymerization initiator and to the aqueous emulsion polymerization of selected unsaturated monomers.

Abstract: Metallo phthalocyanines which have been rendered water soluble by substituting an alkali metal or alkaline earth metal sulfate or carboxylate salt onto the phthalocyanine structure have been found to be effective catalysts for the oxidation of aromatic compounds having benzylic carbon atoms to form the corresponding hydroperoxides.

Abstract: A portion of a recycle stream obtained as a result of the oxidation of an aryl tertiary alkane and containing aralkyl tertiary monohydroperoxide, substantial amounts of unreacted aryl tertiary alkane and lesser amounts of poly-oxy-functional oxidation by-products is subjected to aqueous alkaline extraction to remove at least a portion of the poly-oxy-functional oxidation by-products therefrom followed by separation of the extraction mixture into an aqueous alkaline phase and an organic phase, the organic phase being recycled to the oxidation reaction.

Abstract: A method of producing a polymeric material comprised of polymerizing at least one unsaturated organic compound in an aqueous emulsion in the presence of a free radical generating redox catalyst comprised of a reducing component and an oxidizing component. Said oxidizing component is a composite prepared by (A) obtaining the oxidation product of reacting p-diisopropylbenzene with oxygen and (B) removing a major portion of resulting p-diisopropylbenzene hydroperoxide and unreacted monomers therefrom to effect a concentration of the remainder of the byproducts therein.

Abstract: A method of activating inactive copper salt catalysts for phenol oxidation by the addition of acid.