Abstract: A process for the production of an aliphatic carboxylic acid of the formula RCOOH, wherein R is an alkyl group having from 1 to 5 carbon atoms, comprises the catalytic reaction of an alcohol of formula ROH and carbon monoxide in the presence of a rhodium catalyst, methyl iodide, a high lithium iodide content, a low water content and an organic ester of formula RCO.sub.2 R. The process can optionally be carried out in the presence of hydrogen and/or an organic ligand of formula ER.sup.11.sub.3 where E is nitrogen, phosphorus, arsenic, antimony or bismuth and R.sup.11 is an organic moiety.

Abstract: A process for the production of an aliphatic carboxylic acid of the formula RCOOH, wherein R is an alkyl group having from 1 to 5 carbon atoms, comprises the catalytic reaction of an alcohol of formula ROH and carbon monoxide in the presence of a rhodium catalyst, methyl iodide, a high lithium iodide content, a low water content and an organic ester of formula RCO.sub.2 R. The process can optionally be carried out in the presence of hydrogen and/or an organic ligand of formula ER.sup.11.sub.3 where E is nirogen, phosphorus, arsenic, antimony or bismuth and R.sup.11 is an organic moiety.

Abstract: Silylated polyester resins comprising the acid salt of a Michael addition adduct of an aminoorganosilane and a conjugated unsaturated polyester resin containing a polyethylene oxide chain segment useful for sizing glass fiber reinforcement of polyester molding composites.

Abstract: Volatilized metal compounds retard vapor phase alkane conversion reactions in oxidative coupling processes that convert lower alkanes to higher hydrocarbons.

Abstract: Oxidative coupling of lower alkane to higher hydrocarbon is conducted using catalyst comprising barium and/or strontium component and a metal oxide combustion promoter in the presence of vapor phase halogen component. High ethylene to ethane mole ratios in the product can be obtained over extended operating periods.

Abstract: A process for crosslinking comprising the following steps:(a) admixing, in a processing zone, a copolymer containing at least one hydrolyzable silane moiety; a dihydrocarbyltin oxide; and(i) a carboxylic acid;(ii) a compound bearing at least one carboxylate moiety, which is capable of forming a carboxylic acid when subjected to heat and/or moisture; or(iii) mixtures thereof, with the proviso that:(A) in the event that component (ii) is present, the conditions in the processing zone are such that the carboxylate moiety forms a carboxylic acid;(B) the residence time of the mixture in the processing zone is sufficient to at least partially complete the processing of the copolymer, but of sufficient brevity to substantially avoid a reaction of the carboxylic acid with the dihydrocarbyltin oxide; and(b) passing the mixture from step (a) into a crosslinking zone under such reaction conditions that the carboxylic acid reacts with the dihydrocarbyltin oxide to form dihydrocarbyltin carboxylate, said crosslinking zone

Abstract: Normally sparingly soluble magnesium alkoxide is solubilized in alkanol by the additional presence of certain acidic materials. The resulting solution is used to produce a mixture of substantially spherical particles, substantially free of fines, containing an adduct magnesium alkoxide. The particles are converted by conventional methods to a procatalyst precursor of an olefin polymerization catalyst of good activity and good selectivity to stereoregular polymer whenever appropriate, which catalyst produces polymer product of good morphology.

Abstract: A novel kneaded moldable resin composition and the molding produced therefrom are described. The composition comprises an ethylene polymer, an organopolysiloxane, and a hydrocarbon compound expressed by the formula CH.sub.2 .dbd.CH(CH.sub.2).sub.1-30 CH.dbd.CH.sub.2 and is moldable into films, sheets, tubes, and a variety of plastic parts.

Abstract: Described herein are curable molding compositions comprising a mixture of:(a) a vinyl ester produced by the addition of an unsaturated monocarboxylic acid to a polyepoxide and having a molecular weight greater than 300;(b) acrylic or methacrylic acid or a functionalized derivative thereof having a molecular weight of less than 300;(c) an ethylenically unsaturated monomer which is soluble in and copolymerizable with (a) and (b) and which is different from (b).The compositions can also contain one or more fibers with a melting point or a glass transition temperature above about 130.degree. C.

Abstract: An improved process for the rhodium-catalyzed hydroformylation of olefins to aldehydes is described. The improvement provides a means for recovering valuable components in gaseous streams by scrubbing the streams with a stripped or cooled catalyst solution.

Abstract: The invention relates to silicone surfactants having the general formula:MD.sub.x D'.sub.y Mwherein M is a (CH.sub.3).sub.3 SiO.sub.0.5 -- group; D is a --(CH.sub.3).sub.2 SiO-- group; D is a --(CH.sub.3)(R.sup.2)SiO-- group, in which R.sup.2 is a non-linear hydrocarbyl group; x is 0 or an integer from 1 to 20 and y is an integer from 1 to 20. The silicone surfactants of the present invention are effective polyurethane foam stabilisers and are effective in amounts smaller than previously used commercially thereby leading to savings in costs.

Abstract: Linear silicone-urethane copolymers which contain tertiary amine or quaternary ammonium groups on the polymer backbone of the general formula:{R'NR"SiMe.sub.2 (OSiMe.sub.2).sub.b OSiMe.sub.2 R"NR'CONHR"NHCO.sub.2 (Y)O.sub.2 CNHR"NHCO}wherein Me represents a methyl group; R' represents a hydrogen atom or a lower alkyl group having one to three carbon atoms; R" represents a divalent hydrocarbon group having at least three carbon atoms such as (CH.sub.2).sub.3-12 ; and Y represents (C.sub.z H.sub.2Z+1 N) where Z.gtoreq.5 and .ltoreq.22 and may be quaternized by use of a quaternizing agent R'X wherein X is selected from the group consisting of a halide atom, an acetate or higher carboxylate group, and an alkylsulfate group where the alkyl moiety has 1 to 12 carbon atoms and where R', R" and b may vary within each copolymer are described.

Abstract: A process for producing trimethoxysilane by reacting methanol and silicon metal in the presence of a copper catalyst, and optionally an inert solvent, in which the trimethoxysilane-methanol azeotrope is recycled, characterized by maintaining a 60% methanol conversion.

Abstract: A process for producing acrylic ester by the catalytic esterification of a crude liquid stream of enriched acrylic acid recovered by the partial condensation of the reaction gas effluent from the catalytic oxidation of propylene and/or acrolein. The partial condensation allows a significant proportion of volatile aldehydes and water to pass through the first recovery stage to a second stage for conventional recovery, along with uncondensed acrylic acid vapors and the remainder of the uncondensed reaction gases.

Abstract: A vanadium-based catalyst is treated with certain silicon-containing compounds as a means of narrowing and effectively regulating the molecular weight distribution of the polymers produced with the catalyst.

Abstract: A biocompatible, film-forming delivery system for the delivery of pharmaceutical or therapeutic actives to a desired topical site of a subject, the system including:an active salt compound, wherein the active salt compound is at least a partial salt of(1) a carboxylic acid moiety-containing, biocompatible, film-forming polymer with(2) at least one active selected from the group consisting of pharmaceutical actives, therapeutic actives and a combination thereof, wherein the at least one active is capable of complexing with at least one carboxylic acid moiety of the polymer to form the active salt compound, andwherein the active salt compound forms an active salt compound film on the topical site and the active salt compound disassociates into the polymer and the at least one active while the delivery system is in contact with the topical site such that the polymer remains thereon as a polymer film and the at least one active is delivered to the topical site in an absorbable form.

Abstract: A process is provided for epoxidation of an alkene in the presence of an oxygen-containing gas which comprises contacting the alkene and the oxygen-containing gas under epoxidation conditions in the presence of at least one gaseous efficiency-enhancing member of a redox-half reaction pair, a performance-enhancing amount of a fluorine-containing substance and a supported silver catalyst comprising a catalytically-effective amount of silver on a solid porous support and at least one efficiency-enhancing salt of a member of a redox-half reaction pair.

Abstract: A process for producing sticky polymers at polymerization reaction temperatures in excess of the softening temperature of the sticky polymers in a fluidized bed reactor catalyzed by a transition metal catalyst, which comprises conducting the polymerization reaction above the softening temperatures of the sticky polymers in the presence of about 0.3 to about 60 weight percent, based on the weight of the final product of an inlet particulate material having a mean particle size of from about 0.01 to about 10 micron meters whereby polymer agglomeration of the sticky polymers is maintained at a size suitable for continuously producing the sticky polymers.

Abstract: A process is provided for the epoxidation of an alkene in the presence of an oxygen-containing gas which comprises contacting the alkene and the oxygen-containing gas under epoxidation conditions in the presence of at least one efficiency-enhancing gaseous member of a redox-half reaction pair and a solid catalyst, the catalyst comprising a catalytically-effective amount of silver on a solid support and an efficiency-enhancing amount of at least one efficiency-enhancing salt of a member of a redox-half reaction pair, the support having less than about 50 ppm, by weight, of leachable sodium.

Abstract: A process is provided for epoxidation of an alkene in the presence of an oxygen-containing gas which comprises contacting the alkene and the oxygen-containing gas under epoxidation conditions in the presence of at least one gaseous efficiency-enhancing member of a redox-half reaction pair and a supported silver catalyst, the catalyst comprising a catalytically effective amount of silver on a solid porous support having a stability-enhancing morphology and an efficiency-enhancing amount of at least one efficiency-enhancing salt of a member of a redox-half reaction pair, the support having a surface area of at least about 0.7 m.sup.2 /g and a particulate matrix which contains particles having at least one substantially flat major surface.