摘要:
A lubricant oil for refrigerators, industrial gears, automotive engines, automotive gear oil, fibers and as a rolling lubricant oil, comprising a glycol ether carbonate represented by the general formula [I] ##STR1## wherein R.sub.1 and R.sub.2 are each independently an aliphatic group, an alicyclic group, an aromatic group and an aromatic-substituted aliphatic group each having not greater than 20 carbon atoms. R.sub.3 and R.sub.4 are each independently an ethylene group or an isopropylene group, and m and n are each independently an integer of 2 to 100, and optionally containing ozone layer-nondestructive Freon such as Freon R-134a.
摘要翻译:一种用于冰箱,工业齿轮,汽车发动机,汽车齿轮油,纤维和滚动润滑油的润滑油,其包含由通式[I]表示的二醇醚碳酸酯,其中R 1和R 2各自独立地 脂肪族基团,脂环族基团,芳香族基团和芳香族取代脂肪族基团,各自具有不大于20个碳原子。 R 3和R 4各自独立地为亚乙基或异亚丙基,m和n各自独立地为2〜100的整数,并且任选地含有臭氧层 - 非破坏性氟利昂,例如氟利昂R-134a。
摘要:
A lubricant oil for refrigerators, industrial gears, automotive engines, automotive gear oil, fibers and as a rolling lubricant oil, comprising a glycol ether carbonate represented by the general formula [I]R.sub.1 --0--R.sub.3 --0).sub.m CO--OR.sub.4).sub.n OR.sub.2 [I]wherein R.sub.1 and R.sub.2 are each independently an aliphatic group, an alicyclic group, an aromatic group and an aromatic-substituted aliphatic group each having not greater than 20 carbon atoms, R.sub.3 and R.sub.4 are each independently an ethylene group or an isopropylene group, and m and n are each independently an integer of 2 to 100, and optionally containing ozone layer-nondestructive Freon such as Freon R-134a.
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:
A hydrocarbon resin consisting essentially of a copolymer of (A) an unsaturated chain hydrocarbon or a cyclic hydrocarbon having a vinylidene group and (B) 9,10-dihydrodicyclopentadiene or its derivative, or a hydrocarbon resin modified by addition reacting an ethylenically unsaturated carboxylic acid or its anhydride, or hydrogen, to the above-mentioned copolymer. The hydrocarbon resin and the modified hydrocarbon resin have a high softening point and a low melt viscosity, and are suitable for use in adhesives and traffic paints.
摘要:
A lubricating oil containing an aromatic ether compound represented by the general formula, (R.sup.1).sub.n Ph--O-- (R.sup.2 O).sub.m --R.sup.3, wherein R.sup.1 stands each independently for a particular hydrocarbon group, an etheric oxygen-containing hydrocarbon group, an alkoxyl group, or a halogen-substituted hydrocarbon group, R.sup.2 stands each independently for an alkylene group having 2 to 4 carbon atoms, R.sup.3 stands for a hydrocarbon group having 1 to 12 carbon atoms, Ph stands for an aromatic substituent, n stands for an integer of from 1 to 5, and m stands for an integer of from 1 to 30. The lubricating oil has excellent lubricating property, cleaning property and electrically insulating property, exhibits excellent sealing property owing to its high viscosity and wear resistance, and further exhibits excellent compatibility with R-134a, etc. The lubricating oil can be favorably used for the refrigerators such as of electric refrigerators and room air conditioners that use R-134a as a coolant.
摘要:
There is provided a liquid oxidatively modified ethylenic random copolymer, which is an oxidatively modified product of a liquid ethylenic random copolymer comprising 20 to 80 mol % of ethylene and 80 to 20 mol % of .alpha.-olefin, and has (i) a number average molecular weight (Mn) in the range of from 200 to 10,000, (ii) a molecular weight distribution (Mw/Mn) given as weight average molecular weight (Mw) divided by number average molecular weight (Mn) in the range of up to 4, and (iii) an oxygen content of from 0.1 to 20% by weight, an acid value of from 0.1 to 50, and a saponification value of from 0.1 to 100. It is prepared by contacting a corresponding ethylenic random copolymer with oxygen-containing gas at 100.degree.-250.degree. C.
摘要:
A hydrocarbon resin consisting essentially of a copolymer of (A) an unsaturated chain hydrocarbon or a cyclic hydrocarbon having a vinylidene group and (B) 9,10-dihydrodicyclopentadiene or its derivative, or a hydrocarbon resin modified by addition reacting an ethylenically unsaturated carboxylic acid or its anhydride, or hydrogen, to the above-mentioned copolymer. The hydrocarbon resin and the modified hydrocarbon resin have a high softening point and a low melt viscosity, and are suitable for use in adhesives and traffic paints.
摘要:
A polycarbonate lubricating oil composition which is resistant to decomposition of the polycarbonate and the generation of carbon dioxide gas. The lubricating oil composition contains a polycarbonate lubricant, at least one compound selected from the group of epoxy compound, phenol compound, sulfur compound and amine compound, and optionally a triester phosphite or a triester phosphate compound as inhibitors to the generation of carbon dioxide gas. The lubricating oil composition are stable, have excellent lubricating properties, cleaning properties, and electrical insulating properties, and their viscosity at low temperature can readily be lowered.
摘要:
There is provided a liquid oxidatively modified ethylenic random copolymer, which is an oxidatively modified product of a liquid ethylenic random coplymer comprising 20 to 80 mol % of ethylene and 80 to 20 mol % of .alpha.-olefin, and has (i) a number average molecular weight (Mn) in the range of from 200 to 10,000, (ii) a molecular weight distribution (Mw/Mn) given as weight average molecular weight (Mw) divided by number average molecular weight (Mn) in the range of up to 4, and (iii) an oxygen content of from 0.1 to 20% by weight, an acid value of from 0.1 to 50, and a saponification value of from 0.1 to 100. It is prepared by contacting a corresponding ethylenic random copolymer with oxygen-containing gas at 100.degree.-250.degree. C.
摘要:
Disclosed is a lubricating oil composition comprising, as indispensable components, (A) a synthetic hydrocarbon lubricating oil, (B) a load-withstanding additive and (C) a liquid modified ethylene/.alpha.-olefin random copolymer. In this lubricating oil composition, the load-withstanding oil is homogeneously and stably incorporated. This lubricating oil is significant in that the poor compatibity with a load-withstanding additive, which is the defect of synthetic hydrocarbon lubricating oils, is effectively overcome.