摘要:
A process for producing an oxygen-containing organic compound which comprises reacting carbon monoxide with hydrogen in the presence of a catalyst under heat and pressure, said catalyst comprising (a) a ruthenium compound and (b) an imidazole compound.
摘要:
The present invention provides lubricant oil compositions comprising a polyalkylene glycol carbonate. The lubricant oil compositions are useful for industrial gear oil, automotive gear oil, and lubricant oil for refrigerators, rolling installations and fibers, which are excellent in lubricating properties and detergency. The present invention also relates to lubricant oil compositions which comprise a polyalkylene glycol polycarbonate having mutual solubility with an ozone layer-nondestructive Freon such as Freon R-134a, and which are accordingly especially suited for refrigerators using hydrogenated fluorocarbon as a refrigerant. A polyalkylene glycol carbonate according to the invention comprises a polyoxypropylene group in the molecular chain and an alkyl group and an alkyloxyalkylene group at the molecular terminals. This invention provides a process for preparing said polyalkylene glycol polycarbonate wherein a polypropylene glycol and a carbonate are allowed to react, said reaction including condensation polymerization. The invention also provides a process without condensation polymerization for preparing a polyalkylene glycol polyol wherein a polyol and a carbonate is allowed to react in the presence of a basic catalyst while a produced alcohol is being distilled off, the catalyst is removed then, and the unreacted carbonate is eliminated.
摘要:
The polycarbonates of the present invention include those of sucrose series having a specific cyclic structure, those of oligosaccharide and monosaccharide series other than the sucrose series, those derived from specific saccharides having no cyclic structure, those having a skeletal structure of pentaerythritol, neopentyl glycol or trimethylolmethane, and specific dicarbonates.The lubricating oil and electrical insulating oil of the invention contain the above-mentioned polycarbonates.The polycarbonates of the invention are excellent in compatibility with Freon R-134a (HFC) as well as in lubricating properties, detergency and electrical insulating properties, and are capable of providing lubricating oil for refrigerator, automotive engine oil, automotive gear oil, lubricating oil for rolling and lubricating oil for fiber, especially lubricating oil for which electrical insulating properties are required, and electrical insulating oil.
摘要:
The present invention provides lubricant oil compositions comprising polyalkylene glycol polycarbonates. The lubricant oil compositions are useful as industrial gear oils, automotive gear oils, lubricant oils for refrigerators and rolling installations. The lubricant oils exhibit excellent lubricating properties and detergency and also have mutual solubility with an ozone layer nondestructive Freon such as R-134a. The lubricants of the present invention are especially suited for refrigerator systems using a hydrogenated fluorocarbon as a refrigerant.
摘要:
A normally liquid epoxy resin obtainable by reaction of a bisphenol based oligocarbonate having terminal phenolic hydroxyl groups with an epihalohydrin, followed by dehydrohalogenation. The epoxy resin is capable of forming a tough cured product having improved flexural strength and flexural modulus. A process for the production of an epoxy resin foam in which a polyepoxy compound is crosslinked and simultaneously foamed by the aid of carbonate oligomers having terminal phenolic hydroxyl groups. The product is highly flexible against compression, bending and warp.
摘要:
Disclosed is a process for producing an aromatic carbonate which comprises reacting a phenolic compound with a di-aliphatic carbonate or an aliphatic-aromatic carbonate in the presence of a catalyst. The catalyst is either SnO and/or a tin compound represented by the following formula ##STR1## wherein X and Y are identical or different and each represents OH, SCN, OR.sup.1, OCOR.sup.1 or a halogen atom, R.sup.1 represents an alkyl or aryl group, X and Y are not alkoxy groups at the same time, and R represents an alkyl or aryl group; or at least one compound of an element selected from the group consisting of Sc, Cr, Mo, W, Mn, Au, Ga, In, Bi, Te and lantanoids. The use of these specific catalysts enables the product to be obtained in high yields and selectivities and makes it easy to purify the product.
摘要:
A method of producing polysilane compounds which comprises: polymerizing a monomeric silane compound represented by the general formula of ##STR1## wherein R independently represents hydrogen or hydrocarbon group, but not both R's are hydrogen at the same time, in the presence of an organometallic complex of Ni, Co, Ru, Pd or Ir.