Abstract: A process for preparing an aldehyde-functional organosilicon compound comprises: 1) combining, under conditions to catalyze hydroformylation reaction, starting materials comprising (A) a gas comprising hydrogen and carbon monoxide, (B) a vinyl-functional organosilicon compound, and (C) a rhodium/ligand complex catalyst.

Abstract: A vinylester-functional organosilicon compound is prepared. The vinylester-functional organosilicon compound can be prepared by a process including hydroformylation of an alkenyl-functional organosilicon compound to produce an aldehyde-functional organosilicon compound, oxidation of the aldehyde-functional organosilicon compound to produce a carboxy-functional organosilicon compound, and transvinylation of the carboxy-functional organosilicon compound to produce the vinylester-functional organosilicon compound.

Abstract: A silicone-vinylester copolymer and methods for its preparation and use are provided. The silicone-vinylester copolymer can be made using a vinylester-functional siloxane macromonomer, which can be prepared by a process comprising hydroformylation of an alkenyl-functional polyorganosiloxane to form an aldehyde-functional polyorganosiloxane; oxidation of the aldehyde-functional polyorganosiloxane to form a carboxy-functional polyorganosiloxane, and transvinylation of the carboxy-functional polyorganosiloxane to form the vinylester-functional siloxane macromonomer. The silicone-vinylester copolymer is useful in personal care compositions.

Abstract: An organosilicon compound with carbinol groups is prepared. A catalyzed hydrogenation process for combining an aldehyde-functional organosilicon compound with hydrogen produces the carbinol-functional organosilicon compound.

Abstract: A catalyzed hydroformylation process of an alkenyl-functional organosilicon compound with carbon monoxide and hydrogen produces an aldehyde-functional organosilicon compound.

Abstract: The disclosure relates to a co-current co-precipitation method of CoNiO2 thermistor powders. The method comprises the steps of mixing, stirring, precipitating, aging, suction filtration, washing and drying firstly using nickel nitrate and cobalt nitrate as raw materials to obtain cobalt hydroxide, and then calcining in a tubular furnace at an inert atmosphere to prepare CoNiO2 nano powders. The method has the advantages of simple operation, low cost, short cycle, high yield and no environmental pollution, and further oxidization of the CoNiO2 nano material into NiCo2O4 thermistor powders can be effectively avoided through selection and adjustment of calcination process parameters and inert atmosphere. A high-precision, fast-response and small-volume temperature sensor material can be prepared from CoNiO2 thermistor powders obtained by the method of the disclosure.

Abstract: A method for preparing phosphine-borane complexes from aryldihalophosphine includes mixing sodium borohydride, a solvent having at least 50 vol % glycol ethers, and the aryldihalophosphine to obtain a solution. The solution is maintained at a reaction temperature for a duration of time to obtain the phosphine-borane complexes. The solvent may include 1,2-dimethoxyethane and tetrahydrofuran. A ratio of tetrahydrofuran to 1,2-dimethoxyethane in the solvent may be from 0.1:1.0 to 2.5:1.0.

Abstract: Markovnikov-selective palladium catalyst for carbonylation of alkynes is formed from a bisphosphite having formula (1): The carbonylation catalyst is suited for the preparation of a branched heteroarene-keto product from an alkyne substrate, CO and heterocycle in high yields with low amounts of the linear product.

Abstract: Markovnikov-selective palladium catalyst for carbonylation of alkynes with heteroarenes.

Abstract: The invention relates to a process for doubly carbonylating allyl alcohols to the corresponding diesters, wherein a linear or branched allyl alcohol is reacted with a linear or branched alkanol (alcohol) with supply of CO and in the presence of a catalytic system composed of a palladium complex and at least one organic phosphorus ligand and in the presence of a hydrogen halide selected from HCl, HBr and HI.