摘要:
Processes for preparing alkylene glycol esters of dimer fatty acids according to the general formula (I): H—(OR)n—O(O)C—R1—C(O)O—(RO)n—H (I) wherein R1 represents a hydrocarbon radical of a dimer fatty acid having from about 24 to about 44 carbon atoms, and each R independently represents an alkyl radical having from about 2 to about 3 carbon atoms, and each n independently represents a number of from about 0.25 to about 3.0, are described. The processes include: (a) providing dimer fatty acids; (b) providing an alkylene oxide; and (c) reacting the dimer fatty acids and the alkylene oxide, in the presence of a catalytically-effective amount of at least one alkanolamine.
摘要:
A water-soluble, foam-inhibiting universal lubricant composition based on an aqueous self-emulsifying synthetic oil solution and an anti-foaming agent. The oil is an ethoxylated dimeric fatty acid, and the anti-foaming agent is made up of a Guerbet alcohol and a metal soap.
摘要:
A higher-yielding process for the production of monoglycerides in which triglycerides are enzymatically reacted with a catalytic amount of an esterase, preferably lipase, that has been activated by the addition of alkaline salts, in the presence of linear or branched alcohols containing 1 to 8 carbon atoms, then the esterase may be deactivated and it and the remaining alcohol removed, with the monoglycerides thus produced useful in lubricants, fuel additives, and emulsifying constituents in foods, and cosmetic and/or pharmaceutical formulations.
摘要:
Described are mixtures of esters of carboxylic acids branched at the 2 position and polyol mixtures comprising 60 to 99.9% by weight of branched saturated aliphatic polyols with 2 to 6 primary hydroxy groups and 4 to 10 C atoms and 0.1 to 40% by weight of unbranched saturated aliphatic diols with 2 to 12 C atoms. In spite of the branched chain, such acids can be esterified very rapidly, the resulting esters being suitable for use as lubricants.
摘要:
There is described a fuel additive composition comprising an oleic alkanolamide and an alkoxylated oleic acid. There is also described a fuel composition comprising a hydrocarbon fuel and a fuel additive comprising an oleic alkanolamide and an alkoxylated oleic acid and also a method of running a combustion engine using the fuel if the invention.
摘要:
The invention relates to the use of isopalmitic acid esters of branched aliphatic polyols containing 2 to 6 primary hydroxyl groups and 4 to 10 carbon atoms as a base oil for two-stroke engine lubricants. The isopalmitic acid esters are low in viscosity, even at low temperatures, and do not crystallize out in gasoline, even over periods of several days.
摘要:
An environment-friendly basic oil based on natural materials for the formulation of hydraulic oils having improved viscosity at elevated temperature and lower pour point contains rapeseed oil or soybean oil as the main component, an antioxidant selected from methoxyphenol, ethoxyphenol, butyl hydroxyanisole, butyl hydroxytoluene, methoxyhydroquinone, ethoxyhydroquinone, tertiary butyl hydroquinone, and tocopherol, and an ester of a monocarboxylic acid or a fatty acid.
摘要:
A low-viscosity lubricant composition stable to high and low temperatures containing an ester oil which is the esterfication product of an aliphatic dicarboxylic acid having 8 or 9 carbon atoms and a branched Guerbet alcohol having from 12 to 20 carbon atoms.
摘要:
The invention relates to a transformer oil composition comprising at least one acid interceptor. The invention further relates to the use of acid interceptor in transformer oils for improving stability.