摘要:
Halogenated polycondensates of fatty alcohol-acids are prepared by the following steps:A. polycondensation of said fatty alcohol-acid in a solvent,B. halogenation of the polycondensate obtained in step (a)C. salification of the halogenated polycondensate obtained in step (b) by an alkaline and/or an amine and/or ammonium base.The polycondensates may also be esterifired with a mineral acid.The products are used in aqueous solutions for metal working.
摘要:
Brake fluids and operating fluids for central hydraulic installations in motor vehicles having an excellent temperature / viscosity behavior and good lubricating properties are obtained by the admixture to conventional polyethylene glycol alkyl ether-based fluids of alkyl polyethylene glycol-t-butyl ethers of the formula ##STR1## in which R is a straight or branched chain alkyl radical having from 1 to 4 carbon atoms and n is an integer of from 2 to 10, preferably from 2 to 5. Mixture of the ethers may be employed.
摘要:
An aqueous drilling fluid dispersant and a method of drilling wells using as the drilling fluid dispersant a dihydroxy substituted phenyl alkyl ketone, namely, 1,2-dihydroxy-4acetylbenzene, 1,2-dihydroxy-4-propionylbenzene, and mixtures thereof.
摘要:
Highly basic magnesium phenates are prepared by a process in which a magnesium alkoxy-alkoxide is hydrolyzed in the presence of a sulphurized phenol and the mixture then carbonated in which the presence of free alkoxyalcohol in the reaction mixture is minimized prior to carbonation.
摘要:
Mixtures of (A) hydroxyaromatic compounds (e.g., phenols) having no aliphatic substituents of more than 4 carbon atoms and (B) hydroxyaromatic compounds having at least one aliphatic substituent with at least about 12 carbon atoms may be oxidatively coupled to yield products useful as lubricant and fuel additives.
摘要:
An improved high-performance grease comprising a base fluid comprising a major amount of a linear perfluoroalkyl polyether fluid together with a minor amount of a methyl polysiloxane fluid and thickener is disclosed.
摘要:
Organic material is stabilized against oxidative degradation by the addition of a small amount of an antioxidant compound or mixture of compounds containing a central segment of one to about ten divalent o-hydrocarbyl phenol groups (e.g. o-tert-butylphenol) bonded to each other through a methylene group and having terminal 3,5-dihydrocarbyl-4-hydroxybenzyl groups at each end. They are made by first condensing o-hydrocarbyl phenol with formaldehyde and then reacting the intermediate with 2,6-dihydrocarbyl phenol and formaldehyde.