Abstract: A composition prepared by reacting (A) an esterified carboxy-containing interpolymer, said interpolymer being derived from at least two monomers, (i) one of said monomers being at least one vinyl aromatic monomer and (ii) the other of said monomers being at least one alpha, beta-unsaturated acylating agent, and having, before esterification, {overscore (M)}n determined by gel permeation chromatography ranging from about 8,000 to about 350,000, wherein from about 80% to about 99% of the carboxylic groups of said interpolymer are esterified, wherein from about 80 to about 100% of the ester groups contain from 8 to about 23 carbon atoms and from 0 to about 20% of the ester groups contain from 2 to 7 carbon atoms, with (B) a hydrocarbyl substituted carboxylic acid or functional derivative thereof wherein the hydrocarbyl group comprises from about 10 to about 400 carbon atoms, and (C) an amine having an average of more than 1 condensable N—H group, in any order or simultaneously, or with the preformed reac

Abstract: A method for making viscosity index improving copolymer includes polymerizing a monomer mixture including a first (meth)acrylate monomer, a second (meth)acrylate monomer and a styrenic monomer in an oil soluble diluent and in the presence of a polymerization initiator to form a polymerization intermediate and then polymerizing an additional amount of the first (meth)acrylate monomer, the second (meth)acrylate monomer or a mixture thereof in the presence of the polymerization intermediate to provide a solution of a viscosity index improving copolymer in the diluent wherein the solution includes less than or equal to 1000 parts by weight residual styrene monomer per one million parts by weight solution.

Abstract: Polar monomer-containing copolymers derived from at least one &agr;, &bgr; unsaturated carbonyl compound, such as alkyl acrylates and one or more olefins, such olefins including ethylene and C3-C20 &agr;-olefins such as propylene and 1-butene, which copolymers have (a) an average ethylene sequence length, ESL, of from about 1.0 to less than about 3.

Abstract: A homogeneous composition comprising (A) at least one polymeric carboxylic ester viscosity improver optionally containing nitrogen-containing groups, and (B) at least one hydrocarbyl group substituted ashless dispersant wherein the hydrocarbyl group has M.sub.n ranging from about 200 to about 800, and the weight ratio of (A):(B) ranges from about 3:1 to about 1:3, where in one embodiment, the polymeric carboxylic ester viscosity improver is (1) a polyacrylate ester copolymer, optionally containing nitrogen containing groups, containing from 2 to about 30 carbon atoms in the ester group and having M.sub.n ranging from about 10,000 to about 150,000, and in another embodiment, the polymeric carboxylic ester viscosity improver is (2) an esterified carboxy-containing interpolymer, having RSV ranging from about 0.05 to about 0.

Abstract: A viscosity index improver for addition to lubricating oil or the like, which comprises a graft copolymer having structural units of an oil-soluble polymer (a) comprising an olefin polymer and structural units of a copolymer (b) of a monomer having a peroxide bond with a (meth)acrylate or the like or a copolymer (c) of a monomer having a peroxide bond with 2-hydroxyethyl(meth)acrylate or the like. The improver is excellent in the effect of improving the viscosity index, the thickening effect, the fluidity at low temperatures and the shear stability, and has no fear of causing phase separation in lubricating oil.

Abstract: A copolymer comprising units derived from (a) methacrylic acid esters containing from about 9 to about 25 carbon atoms in the ester group and (b) methacrylic acid esters containing from 7 to about 12 carbon atoms in the ester group, said ester groups having 2-(C.sub.1-4 alkyl)-substituents, and optionally (c) at least one monomer selected from the group consisting of methacrylic acid esters containing from 2 to about 8 carbon atoms in the ester group atoms and which are different from methacrylic acid esters (a) and (b), vinyl aromatic compounds, and nitrogen-containing vinyl monomers with the proviso that no more than 60% by weight of the esters contain not more than 11 carbon atoms in the ester group. Also described are additive concentrates and lubricating oil compositions containing the copolymers and processes for preparing copolymers.

Abstract: The invention concerns demulsifiers and methods of demulsifying based on polyalkyl (meth)acrylated co-oligomers or copolymers, CNP, built up from the following components consisting essentially of:A) 10 to less than 60 weight % of alkyl (meth)acrylic acid esters (CH.sub.2 .dbd.C(R)C(O)OR.sub.1), wherein the alkyl group is an optionally branched alkyl group having 1 to 32 carbon atoms;B) more than 40 to 90 weight % (meth)acrylic acid esters of alkoxylated radicals (CH.sub.2 .dbd.C(R)C(O)O(R.sub.A).sub.n --(R.sub.B).sub.m --R.sub.2 ), wherein R.sub.2 has 1 to 50 carbon atoms and is an optionally branched alkyl group, a cycloalkyl group, aryl group, or an alkaryl group; R.sub.A and R.sub.B represent the alkoxylation radicals a) --CH.sub.2 --CH.sub.2 --O--, b) --CH(CH3)--CH.sub.2 --O--, or c) --CH.sub.2 --CH(CH.sub.

Abstract: A composition, comprising from about 20% to about 80% by weight of a diluent, prepared by reacting a mixture comprising(A) an esterified carboxy-containing interpolymer, said interpolymer being derived from at least two monomers, (i) one of said monomers being at least one of an aliphatic olefin containing from 2 to about 30 carbon atoms and a vinyl aromatic monomer and (ii) the other of said monomers being at least one alpha, beta-unsaturated acylating agent, and having, before esterification, M.sub.

Abstract: Polar monomer-containing copolymers derived from at least one .alpha., .beta. unsaturated carbonyl compound, such as alkyl acrylates and one or more olefins, such olefins including ethylene and C.sub.3 -C.sub.20 .alpha.-olefins such as propylene and 1-butene, which copolymers have (a) an average ethylene sequence length, ESL, of from about 1.0 to less than about 3.

Abstract: Disclosed is a solid or aqueous lubricant concentrate used for the cold forming of metals, which, with reference to the solids content, including a) 20 to 50 parts by weight polyethylene with a softening point above 120.degree. C. and a particle size int he range between 0.1 and 50 .mu.m; b) 20 to 8 parts by weight polyacrylate with a molecular weight of 4,500 to 10,000 and c) 2 to 8 parts by weight styrene/acrylic acid copolymer with a molecular weight of 150,000 to 250,000 and a glass transition temperature of 45 to 55.degree. C., where, under the conditions of use, the acrylic acid component of the polymers in accordance with items b) and c) is predominantly present as salt of one or more inorganic cations, and the softening points of the individuals polymers are distributed over the temperature range defined by the limiting values of ambient temperature and 200.degree. C.

Abstract: A lubricant which comprises: a mineral oil basestock which has been dewaxed via catalytic cracking and/or catalytic isomerization; an alkylene-alkylene copolymer; and a lubricating oil flow improver formed from the reaction product of: (a) an unsaturated carboxy ester formed via the esterification of an unsaturated carboxylic acid or its corresponding anhydride with a monohydric aliphatic alcohol having an average carbon number of between about 10 to 18, the unsaturated carboxy ester having the formula: ##STR1## wherein R' is selected from the group consisting of hydrogen and COOR and wherein R is a C.sub.6 to C.sub.22 alkyl group; and (b) a monomer selected from the group consisting of(i) a vinyl ester having the formula: ##STR2## wherein R.sub.1 comprises an alkyl group containing from 1 to 18 carbon atoms;(ii) an olefin having the formula ##STR3## wherein R.sub.1 and R.sub.2 can independently be hydrogen, an alkyl having from 1 to 28 carbon atoms, or a substituted aryl group, provided both R.sub.1 and R.

Abstract: Disclosed are a viscosity index improver which comprises a copolymer (A) consisting essentially of an alkyl methacrylate (a1), and one or more monomers (a2) selected from the group of conjugated dienes, acetylene, substituted acetylene, alkyl vinyl ethers and alkyl allyl ethers; an engine lubricant composition comprising said viscosity index improver and base oil; and a concentrate comprising an increased amount of said viscosity index improver and base oil. The viscosity index improver gives reduced amounts of coked products, while improving the fuel-related performance characteristics of cars that use the engine lubricant composition comprising the improver.

Abstract: Additive concentrates comprising from at least one organic diluent selected from the group consisting of naphthenic oils and synthetic oils and from about 95% to about 50% by weight of an ester as defined herein are useful to prepare lubricating oils having good viscosity index and which also have exceptional low temperature characteristics.

Abstract: This invention provides a composition and method for producing partial synthetic automatic transmission fluids having improved shear-stability and low temperature properties without the need to incorporate polymeric viscosity modifiers.

Abstract: Copolymers and functionalized copolymers comprising ethylene units, in combination with non ethylene copolymer derivatives, give improved engine piston cleanliness when used as lubricating oil additives.

Abstract: Mixtures of esterified carboxy-containing interpolymers and additive concentrates and lubricating oil compositions containing same. Residual acidity of the esterified interpolymers may be neutralized by reaction with an amine.

Abstract: Synthetic oils comprising 5-100 percent by weight of an oligomer ofA) 0-75 wt. % of at least one 1-alkene,B) 20-100 wt. % of at least one (meth)acrylic acid ester of the formula ##STR1## wherein R is hydrogen or methyl and R.sub.1 is optionally branched alkyl or cycloalkyl, andC) 0-65 wt. % of a (meth)acrylic acid ester of the formula ##STR2## wherein R' is hydrogen or methyl and R.sub.2 is alkyl substituted with at least one hydroxy group or is ##STR3## wherein R.sub.3 and R.sub.4 are hydrogen or methyl, R.sub.5 is hydrogen or optionally branched alkyl, but if n is 1, then R.sub.5 is exclusively optionally branched alkyl.

Abstract: This invention provides a composition and method for producing partial synthetic automatic transmission fluids having improved shear-stability and low temperature properties without the need to incorporate polymeric viscosity modifiers.

Abstract: This invention provides hydrocarbon oil compositions comprising a major amount of a hydrocarbon oil and, as active ingredients, minor amounts of a copolymer of at least one n-(C.sub.8 -C.sub.40 -alkyl) (meth)acrylate with maleic anhydride, and at least one additive selected from the group consisting of a homopolymer or copolymer derived from an unsaturated hydrocarbon monomer, an ester and a wax anti-settling additive; additive concentrates containing the active ingredients and use of the latter in improving the cold flow properties of hydrocarbon oils.

Abstract: Compositions comprising two or more ethylene-unsaturated ester copolymers differing in their ester proportions improve the low temperature properties of fuel oils.