Abstract: The invention relates to the following novel silanes: methyl vinyl bis(methyl isobutyl ketoximino) silane; methyl vinyl bis-(methyl amyl ketoximino) silane; methyl tris-(methyl isobutyl ketoximino) silane; vinyl tris-(methyl isobutyl ketoximino) silane; methyl tris-(methyl amyl ketoximino) silane; vinyl tris-(methyl amyl ketoximino) silane; tetrakis-(methyl isobutyl ketoximino) silane; tetrakis-(methyl amyl ketoximino) silane methoxy tris-(methyl isobutyl ketoximino) silane; ethyl tris-(methyl isobutyl ketoximino) silane; ethoxy tris-(methyl isobutyl ketoximino) silane; methoxy tris-(methyl amyl ketoximino) silane; ethyl tris-(methyl amyl ketoximino) silane; ethoxy tris-(methyl amyl ketoximino) silane; and mixtures thereof.

Abstract: The process of the invention comprises:a) heating at least one low molecular weight aromatic hydrocarbon in the presence of a Lewis acid under conditions sufficient to produce a pitch of desired composition and properties;b) recovering a pitch of desired composition and properties.The process of the invention may be used to produce pitch which can be used in roofing and binder applications.

Abstract: The invention relates to a process for preparing hydrofluorocarbons of the formulas CF.sub.3 (CH.sub.2 CF.sub.2).sub.n F comprising reacting at least one reactant selected from CCl.sub.3 (CH.sub.2 CCl.sub.2).sub.n Cl, CCl.sub.3 (CH.sub.2 CF.sub.2).sub.n Cl or CCl.sub.2 [(CH.sub.2 CF.sub.2)Cl].sub.2, where n=1 to 3, with hydrogen fluoride at a temperature of from about 25.degree. to about 200.degree. C.

Abstract: The present invention relates to foam compositions which are expanded with hydrohalocarbon blowing agents in the presence of catalysts which are capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during the polymerization. Thus, the present invention provides compositions comprising polyisocyanate, polyol, hydrohalocarbon blowing agent, surfactant, and catalyst for polymerization of the polyisocyanate and polyol wherein the catalyst is capable of decreasing the amount of decomposition of the hydrohalocarbon blowing agents to haloalkenes during polymerization of the polyisocyanate and the polyol.

Abstract: Trichlorofluoromethane refrigeration systems use mineral oil to lubricate the compressor. We have found that the use of 1,1-dichloro-2,2,2-trifluoroethane and mineral oil results in the formation of 1-chloro-2,2,2-trifluoroethane; in the absence of mineral oil, the use of 1,1-dichloro-2,2,2-trifluoroethane does not result in the formation of 1-chloro-2,2,2-trifluoroethane. We have found an additive which substantially reduces the formation of 1-chloro-2,2,2-trifluoroethane. Thus, the present invention provides a composition comprising: (a) 1,1-dichloro-2,2,2-trifluoroethane, (b) hydrogen-contributing lubricant: and (c) a composition comprising: (i) at least one phenol and (ii) at least one aromatic or fluorinated alkyl epoxide wherein the composition (c) substantially reduces the decomposition of 1,1-dichloro-2,2,2-trifluoroethane.

Abstract: This invention relates to thermally stable electrically conductive conjugated polymer comprising a conjugated polymer cation such as a substituted or unsubstituted polyaniline doped with a dopant anion substituted with one or more polar groups such as hydroxy, the polar group having an electronegativity or an electropositivity such that said polar group or groups have a net polar group molar contribution greater than zero.

Abstract: The invention relates to the following novel silanes: methyl vinyl bis-(methyl isobutyl ketoximino) silane; methyl vinyl bis-(methyl amyl ketoximino) silane; methyl tris-(methyl isobutyl ketoximino) silane; vinyl tris-(methyl isobutyl ketoximino) silane; methyl tris(methyl amyl ketoximino) silane; vinyl tris-(methyl amyl ketoximino) silane; tetrakis-(methyl isobutyl ketoximino) silane; tetrakis-(methyl amyl ketoximino) silane and mixtures thereof. These compounds are useful as intermediates in one-component room-temperature-curing sealant, adhesive and coating applications among other silicone polymer applications.

Abstract: The present invention provides an improved process for the regeneration of ion exchange gels and resins. Exhausted regenerating solutions from a either a cationic or anionic exchange column are converted into fresh regenerating solutions via one or a combination of electrodialysis units having at least one bipolar membrane. The spent regenerants may be treated in an electrodialytic water splitter, an acid or base purification unit, or any combination thereof, to reclaim as much or as little of the regenerating solution as is required by the particular process.

Abstract: Dimensionally stable laminates of epoxy resin reinforced with glass fibers have a coefficient of thermal expansion which matches that of copper, making possible copper foil covered laminates which provide improved registration in multilayer printed circuit boards. New glass fabric styles provide balanced thermal expansion in both the warp and fill directions.

Abstract: The invention generally relates to a process for the purification of a component of a binary azeotrope in which the composition of the azeotrope changes by about 10 mole percent with pressure comprising:(a) subjecting a binary azeotrope to a distillation step in which most of one of the binary components is removed as distillate (distillate 1) with the bottoms (bottoms 1) enriched in the other component;(b) subjecting distillate 1 to at least one additional distillation step conducted at a different pressure in which most of the component recovered as bottoms 1 is removed as distillate 2 with the bottoms 2 enriched in the component enriched in distillate 1;(c) optionally repeating step (b) as many times as desired; and(d) recovering the desired purified component.The invention is particularly useful in the purification of pentafluoroethane in a pentafluoroethane/chloropentafluoroethane azeotrope.

Abstract: A sterilant mixture comprising 14 to 25 mole percent ethylene oxide and 75 to 86 mole percent 1,1,2,2,2-pentafluoroethane, and a sterilization method using same.

Abstract: Azeotrope-like compositions comprising trifluoromethane and carbon dioxide or trifluromethane, hexafluoroethane and carbon dioxide are stable and have utility as refrigerants for heating and cooling as well as fire extinguishing compositions.

Abstract: 2-Chloro-1,1-difluoroethylene (R-1122) is removed from 1,1,1,2-tetrafluoroethane (R-134a) by contacting the R-134a in the vapor phase with chlorine in the presence of ultraviolet light providing an exposure of at least about 2 watts-hour/kg.

Abstract: An improved process for the vapor phase fluorination, especially fluorination of 1,1,1-trifluoro-2-chloroethane (CFC-133a) with HF to produce 1,1,1,2-tetrafluoroethane (HFC-134a) employs a catalyst which preferably consists essentially of boehmite and Cr(OH)Cl.sub.2.2H.sub.2 O, combined and extruded to form particulates and then heated in nitrogen.

Abstract: A thermosetting resin is comprised of (a) a bisimide, particularly a bismaleimide, (b) a reactive brominated aromatic compound, particularly a member of the group consisting of group consisting of tribromophenyl maleimide, tribromostyrene, and pentabromobenzyl acrylate; and(c) a multifunctional nitrogen compound, particularly dicyandiamide, and optionally(d) ethylene bistetrabromophthalimide.

Abstract: The present invention provides hydrochlorofluorocarbons having 3 to 5 carbons atoms, 1 to 2 chlorine atoms, and an OH rate constant from about 8 to about 25 cm.sup.3 /molecule/sec.times.10.sup.-14. The hydrochlorofluorocarbons are useful as solvents and blowing agents.

Abstract: The present invention relates to a process for the reductive dechlorination of ClCF.sub.2 CFClCF.sub.2 Cl to CF.sub.3 CHFCH.sub.2 F comprising the step of contacting 1,2,3-trichloropentafluoropropane and H.sub.2 in the presence of a catalyst selected from the group consisting of palladium, platinum, ruthenium, rhodium, iridium and mixtures thereof supported on alumina under reaction conditions sufficient to produce a product stream containing 1,1,1,2,3-pentafluoropropane.

Abstract: The present invention provides hydrofluorocarbon solvents having a portion which is fluorocarbon and the remaining portion is hydrocarbon and having 4 to 7 carbon atoms. The solvents are useful for dissolving contaminants or removing contaminants from the surface of a substrate.

Abstract: Stable azeotrope-like compositions of 1,1,1,3,3,5,5,5-octafluoropentane, C.sub.1 -C.sub.5 alkanol and optionally nitromethane have been discovered which are useful as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards and dry cleaning.

Abstract: Azeotrope-like compositions comprising dichloropentafluoropropane and 1,2-dichloroethylene are stable and have utility as degreasing agents and as solvents in a variety of industrial cleaning applications including cold cleaning and defluxing of printed circuit boards.