摘要:
The invention relates to aqueous emulsion copolymers of (meth)acrylates of long-chain alcohols in continuous aqueous phase, characterized in that they contain as storable disperse phase copolymers of the following monomer components:at least 50% by weight and preferably at least 60% by weight (meth)acrylates of C.sub.16-30 alcohols0 to 25% by weight and preferably 5 to 10% by weight (meth)acrylates of alcohols containing no more than 8 carbon atoms0.5 to 40% by weight and preferably 1 to 25% by weight olefinically unsaturated mono- and/or dicarboxylic acids or anhydrides containing more than 10 carbon atoms.The invention also relates to the use of these aqueous emulsion copolymers for depressing the pour or flow points of hydrocarbon mixtures, particularly crude oil or petroleum fractions, the described copolymers forming the disperse phase of aqueous emulsion copolymers in a highly concentrated, but readily mobile formulation for incorporation in hydrocarbon mixtures of the described type.
摘要:
Oil compositions are disclosed which are substantially undeteriorative even in an oxidizing atmosphere and suitably applicable as lubricating oils, heat transfer oils, heat treating oils and electrical discharge machining oils. The composition is essentially comprised of 100 weight parts of a selected base oil of a mineral or synthetic class and 0.1 to 20 weight parts of a specified oil fraction. The oil fraction is an oil generated from a hydrogenated pitch and distilled to boil at from 160.degree. to 550.degree. C., the pitch being derived by primarily heat-treating and hydrogenating a heavy oil of a petroleum or coal origin, or an oil resulting from secondarily heat-treating the pitch and boiling at from 160.degree. to 550.degree. C.
摘要:
Solvent-free lubricant compositions having improved lubricity properties comprising a basestock having a kinematic viscosity of about 1.5 to 3.0 cSt at 100.degree. C., about 3 to 15 wt % of bright stock having a kinematic viscosity about 20 to 40 cSt at 100.degree. C., about 3 to 15 wt % of a polyisobutylene having a number average molecular weight of about 400 to 1050 and about 3 to 15 wt % of a polyisobutylene having a number average molecular weight of about 1150 to 1650. Minor amounts of the lubricant composition may be incorporated into a distillate fuel to provide a lubricant oil-fuel composition for two-cycle engines.
摘要:
Metal-metal surface contact systems in metalworking processes may be lubricated by applying thereto a composition comprising an ester, wherein the ester has a full film traction coefficient of less than about 0.05 at a pressure of about 0.5 to about 1.2 GPa, a temperature of about 50.degree. C. and a sliding velocity of about 0.5 to about 10 msec.sup.-1. The ester is represented by the general formula: ##STR1## where R.sup.1 and R.sup.2, R.sup.3 and R.sup.4 and m are set forth in the Summary of the Invention. The composition may be mixed with a solvent to form a solution or emulsified prior to application to the metallic surface.
摘要:
Lubricants and lubricant additive compositions which contain as essential ingredients mineral oil and a metallic acid soap. The compositions improve engine efficiency and provide a protective film over sand and grit to prevent engine wear and stoppage.
摘要:
This invention relates to a two-cycle engine lubricant composition, comprising (A) at least one dispersant, (B) at least one reaction product of a fatty acid and a polyamine, and (C) at least about 25% by weight of the composition of at least one varnish dissolver selected from (a) keto-alcohols, (b) carboxylic esters having up to a total of 24 carbon atoms and (c) alkoxy alcohols, and (D) at least about 15% by weight of the composition of at least one fluidizing oil, and a method, comprising the steps of introducing into a two-cycle internal combustion engine a fuel-lubricant mixture comprising a major amount of a fuel and a minor amount sufficient to increase compression or release stuck piston rings, of the two-cycle engine lubricant composition.
摘要:
Disclosed is a viscosity index improver in the form of a high-concentration non-aqueous dispersion of a low-viscosity olefinic polymer and a method of preparing the same. The improver comprises (1) an olefinic polymer, (2) a compound of (i) or (ii), (i) being a compound having at least one segment comprising A and B wherein A is a residue of a compound substantially composed of a hydrocarbon having a weight average molecular weight of 500 to 500,000 and having hydroxyl and/or carboxyl and/or carbonyl and/or amino and/or dithiocarboxyl group(s) and B is a residue of a compound having carboxyl and/or hydroxyl and/or isocyanate and/or amino and/or ketomine group(s), said A and B being bonded through at least one linkage selected from ester linkage, thioester linkage, urethane linkage, urea linkage, amide linkage, imide linkage and ether linkage, and (ii) being a reaction product of AA and BB wherein AA is an olefinic polymer having a weight average molecular weight of 500 to 500,000 and added with ethylenic unsaturated dicarboxylic acid(s) and BB is a compound having at least one group selected from mercapto group, amino group, ketimine group, hydroxy group and isocyanate group, said AA and BB being bonded through at least one linkage selected from thioester linkage, amide linkage, imide linkage and ester linkage, and (3) a medium which does not substantially dissolve or which scarcely dissolves the said olefinic polymer.
摘要:
A metalworking fluid comprising three constituents, a highly purified paraffin oil, one or more esters, and an emulsifier. The metalworking fluid may be used in its neat form or may be diluted with water such that the water component is from about 50% to 99% by volume of the total volume of water and metalworking fluid. The metalworking fluid provides excellent lubricating and cooling properties while avoiding any off taste problems.
摘要:
Process of sulfurizing a blend of 90 to 50 and preferably 88 to 70 parts by volume of triglyceride such as lard oil and 10 to 50 and preferably 12 to 30 parts by volume of an ethylenically unsaturated hydrocarbon containing 2 to 24 carbon atoms. The sulfurization is carried out using elemental sulfur. Simultaneous sulfurization and chlorination may be effected by reacting with sulfur monochloride. Phosphosulfurization may also be carried out by addition of small amounts of a phosphorus sulfide to the sulfurized blend followed by heating at 180.degree. F. to 250.degree. F. for from 30 minutes to 10 hours to effect phosphosulfurization. The sulfurization or phosphosulfurization involves reacting at from 330.degree. F. to 445.degree. F. for 20 minutes to 10 hours followed by blowing with a gas at from 125.degree. F. to 250.degree. F. for 30 minutes to 20 hours to remove hydrogen sulfide. The simultaneous sulfurization and chlorination reaction is carried out at from 90.degree. F. to 280.degree. F. for from 20 minutes to 10 hours followed by blowing with a gas at from 125.degree. F. to 250.degree. F. for 30 minutes to 20 hours. The sulfurized oils contain from 7.5 to 25 weight percent sulfur as based on the blend of olefin and triglyceride.
摘要:
1000 Parts by weight of oil-in-water emulsion contain 10-70 parts by weight of palm kernel oil as reaction layer former, 5-20 parts by weight of poly-ethoxylated sorbitanoleate as emulsifier, 5-25 parts by weight of unsaturated, long chain monocarboxylic acids as inhibitor against hydrogen embrittlement and rusting, 1-25 parts by weight hexamethylenetetramine as stabilizer, fungicide and bactericide, rest deionized water. The emulsion is particularly suitable for cold rolling aluminum and aluminum alloys. The rolled strip materials exhibit excellent surface quality also after high reductions per pass.