摘要:
There is disclosed a lubricating oil composition containing a dual additive combination for reducing the low temperature viscosity properties thereof. Such additive combination comprises a Component A, e.g., a polymethacrylate or esterified styrene/maleic anhydride copolymer and a Component B, e.g., sorbitan tristearate.
摘要:
There is disclosed a lubricating oil composition containing a dual additive combination for reducing the low temperature viscosity properties thereof. Such additive combination comprises a Component A, e.g., a polymethacrylate or esterified styrene/maleic anhydride copolymer and a Component B, e.g., sorbitan tristearate.
摘要:
Copolymers of straight chain alpha olefins and maleic anhydride esterified with an alcohol wherein the alpha olefin is of the formula:R.CH=CH.sub.2and the alcohol is of the formula:R.sup.1 OHin which at least one of R and R.sup.1 is greater than 10 and the sum of R and R.sup.1 is from 18 to 38 and R.sup.1 is linear or contains a methyl branch at the 1 or 2 position have been found to be effective additives for improving the low temperature properties of distillate fuels.
摘要:
An additive combination for improving the cold flow properties of distillate fuels comprises a combination of:(A) a distillate flow improver which is an ethylene containing polymer, preferably a copolymer of ethylene with unsaturated esters, e.g. vinyl acetate;(B) a hydrocarbon polymer of C.sub.2 to C.sub.30 olefin of number average molecular weight of 10.sup.3 to 10.sup.6 or derivatized version thereof, for example copolymers of ethylene and propylene, or polyisobutylene, which are used as lubricating oil V.I. improvers; and(C) a polar oil soluble compound which includes amides, salts, carboxylates, sulfonates, sulfates, phosphates, phenates and borates, having hydrocarbon solubilizing groups, for example salts and amides of polycarboxylic acid such as phthalic anhydride reacted with hydrogenated secondary tallow amine.
摘要:
The low temperature properties of a distillate petroleum fuel oil boiling in the range 120.degree. C. to 500.degree. C., and whose 20% and 90% distillation points differ by less than 100.degree. C., and/or whose Final Boiling Point is in the range 340.degree. C. to 370.degree. C. are improved by the addition of a polymer or copolymer having at least 25 wt. % of n-alkyl groups of average number of carbon atoms from 12 to 14 with no more than 10 wt. % containing more than 14 carbon atoms.
摘要:
The low temperature properties of a distillate petroleum fuel oil boiling in the range 120.degree. C. to 500.degree. C., and whose 20% and 90% distillation points differ by less than 100.degree. C., and/or whose Final Boiling Point is in the range 340.degree. C. to 370.degree. C. are improved by the addition of a polymer or copolymer having at least 25 wt. % of n-alkyl groups of average number of carbon atoms from 12 to 14 with no more than 10 wt. % containing more than 14 carbon atoms.
摘要:
An additive combination for improving the cold flow properties of distillate fuels comprises a combination of:(A) a distillate flow improver which is an ethylene containing polymer, preferably a copolymer of ethylene with unsaturated esters, e.g. vinyl acetate;(B) a hydrocarbon polymer of C.sub.2 to C.sub.30 olefin of number average molecular weight of 10.sup.3 to 10.sup.6 or derivatized version thereof, for example copolymers of ethylene and propylene, or polyisobutylene, which are used as lubricating oil V.I. improvers; and(C) a polar oil soluble compound which includes amides, salts, carboxylates, sulfonates, sulfates, phosphates, phenates and borates, having hydrocarbon solubilizing groups, for example salts and amides of polycarboxylic acid such as phthalic anhydride reacted with hydrogenated secondary tallow amine.
摘要:
A liquid hydrocarbon particularly fuel oil containing an amine-salt having the formula ##STR1## wherein R, R.sup.1 and R.sup.2 are hydrogen or a hydrogen - and carbon-containing group;R.sup.3 and R.sup.4 are hydrogen or hydrogen - and carbon containing groups containing at least 12 carbon atom;R.sup.5 is a hyrdrogen-and carbon-containing group containing at least 12 carbon atoms;X is --OR.sup.6, NR.sup.7 R.sup.8 or [--O].sup.-+ [NHR.sup.9 R.sup.10 R.sup.11 ] and Y is --OR.sup.12, NR.sup.13 R.sup.14 or [--O].sup.-+ [NHR.sup.15 R.sup.16 R.sup.17 ]where R.sup.6, R.sup.7, R.sup.8, R.sup.9, R.sup.10, R.sup.13, R.sup.14, R.sup.15 and R.sup.16 are hydrogen or hydrogen and carbon containing groups, and R.sup.11 and R.sup.17 are hydrogen - and carbon containing groups; provided that R.sup.3, R.sup.4 and R.sup.5 cannot all be alkyl groups.
摘要:
Polymers or copolymers containing an n-alkyl ester of a mono-ethylenically unsaturated C.sub.4 to C.sub.8 mono- or dicarboxylic acid wherein the average number of carbon atoms in the n-alkyl groups is from 12 to 14, and which contain no more than 10 wt. % of comonomer containing alkyl groups containing more than 14 carbon atoms and preferably no more than 20 wt. % of comonomer in which the alkyl group contains fewer than 12 carbon atoms are low temperature flow improvers for distillate fuels improving flow and filterability as well as lowering cloud point.
摘要:
Distillate fuels, particularly those having a relatively high final boiling point, are significantly improved in their flow and filterability properties utilizing a two component additive consisting of 25 to 95 wt. % preferably 50 to 90 wt. % of C.sub.30 -C.sub.300 oil-soluble nitrogen compound being an amide or amine salt of an aromatic or cycloaliphatic carboxylic acid and 75 to 5 wt. % preferably 10 to 50 wt. % of a certain category of ethylene-vinyl acetate copolymers.