Abstract: Motor oils and transmission oils of the usual commercial SAE single- and multiple viscosity classes, which oils contain polymeric additives and which have high dispersivity and good wear protection characteristics, said oils containing the following additives: (i) at least one heavy-duty (HD) additive, which contains phosphorus compounds; and (ii) as dispersive polymeric components PC, cooligomers copolymers, or combinations thereof comprised of: (a) units of C6-24 alkyl (meth)acrylates, (b) units of at least one functionalized alkyl (meth)acrylate, (c) units of one or more C1-5-alkyl (meth)acrylate monomers, and (d) units of 1-alkenes, with the following provisions: (1) the units of formulas I and II together comprise 100 wt. %, (2) the content of polymer components) PC in the additive-containing mineral oils is in the range 0.5-50 wt. %, and (3) the content of phosphorus in the additive-containing mineral oils is less than or equal to 0.08 wt. %.

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: The invention relates to a method for making oligomers, including homo-oligomers and cooligomers, by the free radical polymerization of at least one monomer component B) having a greater tendency to polymerize and 0-90 wt. %, calculated on the oligomers, of a monomer component A) having a lesser tendency to polymerize, at an elevated temperature and in the presence of a polymerization initiator in a conventional polymerization vessel, by adding monomer component B) to monomer component A), or to a solution of monomer component A), or merely to a solvent, so that the mol ratio of B) to A), if A) is present, passes through values of 0 to about 0.2 during the initial phase of the polymerization and takes the value 0.

Abstract: The invention relates to polymer emulsions of poly(meth)acrylic acid esters and olefin copolymers suitable for improvement of the viscosity index, for use as oil additives.The polymer emulsion is formed of a continuous phase of poly(meth)acrylic acid esters and d-oligomers where the esters and oligomers have a bimodal molecular-weight distribution, a stabilizing agent (a graft or block polymerizate of an olefin copolymerizate and methacrylic acid esters), and a disperse phase of olefin copolymerizates distributed in the continuous phase.

Abstract: A composition comprising a carrier and a comb copolymer made by copolymerizing a polyalkyl (meth)acrylate macromonomer, present in an amount of 10-90 wt %, with the following monomers in a total amount of 90-10 wt %:(a) 0-90 wt % of C.sub.6 -C.sub.30 alkyl (meth)acrylates,(b) 0-60 wt % of nonfunctionalized comonomers selected form the group consisting of C.sub.1 -C.sub.5 alkyl (meth)acrylates, styrene, C.sub.1 -C.sub.4 alkyl styrenes, and vinyl esters of C.sub.2 -C.sub.12 carboxylic acids, and(c) 0-40 wt % of functionalized comonomers selected from the group consisting of functionalized (meth)acrylic acid esters and amides, and vinyl heterocyclic compounds, all of the above amounts based on the weight of the graft copolymer.The composition is especially useful as a lubricating oil additive with viscosity index-improving effect.

Abstract: Co-oligomers and copolymers having dispersant activity and usable as emulsifiers are based on esters of (meth)acrylic acid; where the co-oligomers and copolymers are comprised of the following components:(A) 60-95 wt. % of at least one (meth)acrylic acid ester of formula I ##STR1## where R represents hydrogen or methyl, andR.sub.1 represents a (possibly branched) alkyl group or a cycloalkyl group with 4-32 carbon atoms in the alkyl group; and(B) 5-40 wt. % of a (meth)acrylic acid ester of formula II ##STR2## where R' represents hydrogen or methyl,R.sub.2 represents an alkyl or aryl group with 1-50 carbon atoms, where R.sub.2 itself may be substituted with nitrogen or sulfur,n may be a number from 5 to 100, andm may be a number from 0 to 100;and, in the amount of 0-90 mol % of the monomer(s) of formula II, a hydroxyalkyl ester of (meth)acrylic acid, of formula III: ##STR3## where R" represents hydrogen or methyl, andR.sub.

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: The present invention relates to comb polymers KP, produced from macromonomers of formula (I) ##STR1## where X represents a group which comes from the initiator system, preferably an alkyl group with 1-50 C atoms; R1 represents an alkyl group with 1-18 C atoms, preferably 1-10 C atoms, particularly preferably 1-4 C atoms; R2 and R3 each represent an alkyl group with 1-8 C atoms; and B represents a terminal alkene group with at least 2 and not more than 12 C atoms; wherewith the compound of formula (I) is converted, by means which are per se known, to a compound of formula (II) which contains an active hydrogen substituent in the terminal position: ##STR2## where X, R1, R2, a, b, and c are as defined above, and a represents the group B modified by introduction of the active hydrogen function; wherewith the compound of formula (II) in turn is acylated to a macromonomer of formula (IV) by a reagent MR which introduces the (meth)acryloyl group: ##STR3## where X, R1, R2, R3, A, a, b, and c are as defined above, an

Abstract: The invention relates to comb polymers based on olefin copolymer macromonomers. Preferred comb polymers are copolymers of optionally hydrogenated olefin copolymer macromonomers of formula I ##STR1## wherein R' is hydrogen or methylR.sub.1 is the organic residue of a lithium-organic compound,[A] is a segment formed by 1,4-addition of butadiene potentially substituted with a C1-C6 alkyl residue[A'] is a segment formed by vinyl addition of butadiene potentially substituted with a C1-C6 alkyl residueand n+m stands for an integer of from 7 to 3,000, with (meth)acrylic ester monomers of formula II ##STR2## wherein R' is hydrogen or methyl, andR.sub.2 is an alkyl residue with 1 to 26 carbon atoms.

Abstract: The invention relates to the use of polymethylalkanes having terminal methyl groups and methylene and ethylidene groups of the formula I ##STR1## in which the total number of C atoms n+2 m+2 is 20 to 100 and the ratio of the methyl and methylene groups to the ethylidene groups is 3 to 20:1 and the ethylidene groups are always separated by at least one methylene group, as biodegradable base oils for lubricants and functional fluids. Suitable polymethylalkanes are obtained by oligomerization of .alpha.,.omega.-diolefins, for example in particular according to P 41 19 332.6, or by pyrolysis of ethene/propane copolymers and subsequent hydrogenation in each case. The polymethylalkanes can be combined with conventional additives and other degradable or non-degradable base oils.

Abstract: The present invention provides a polymer-modified bitumeniferous composition containing polymer components in the amount of 0.5-50 wt. %, wherein 20-100 wt. % of the polymeric additive is a copolymer comprises of units of: C.sub.6 -C.sub.28 -alkyl (meth)acrylates in the amount of 80-99.9 wt. %, maleic anhydride in the amount of 0.1-20 wt. %, and other polymerizable compounds in the amount of 0-19.9 wt %. The polymer-modified bitumens exhibit excellent and persistent homogeneity, high elastic resilience, and a good range of plasticity.

Abstract: Polyalkyl acrylates and methacrylates, suitable for improvement of the viscosity index, are used as oil additives imparting improved dispersant and detergent effects in diesel and gasoline engines, said polyalkyl acrylates or methacrylates being copolymers comprising from 80 to 99.5 parts by weight of alkyl acrylates of methacrylates of the formula ##STR1## wherein R is hydrogen or methyl and R.sub.1 is alkyl having from 6 to 24, and preferably from 8 to 20, carbon atoms, together with from 0.5 to 20 parts by weight of at least one functionalized alkyl methacrylate of the formula ##STR2## wherein R.sup.1 is hydrogen or methyl and R.sub.2 is alkyl having from 2 to 6 carbon atoms and substituted with at least one OH group, or is a polyalkoxylated group of the formula ##STR3## wherein R.sub.3 and R.sub.4 are hydrogen or methyl, R.sub.

Abstract: A method for the solvent dewaxing of wax-containing petroleum products with at least one solvent suitable for dewaxing and a polymeric dewaxing aid comprising polyacrylates, by mixing the products to be dewaxed with the solvent and the polymeric dewaxing aid, chilling the mixture so obtained, and separating the precipitated wax, the dewaxing aid used being a mixture of(I) a polymer of esters of acrylic acid with C.sub.10 -C.sub.40 alkanols and(II) a polymer of esters of methacrylic acid with alkanols comprising more than 10 weight percent of branched alkanols,the weight ratio between components (I) and (II) ranging from 1:20 to 20:1.

Abstract: A polymer-modified bitumen (PmB) having improved elastic restoration prepared by blending from 0.5-20 wt. % of a polymer material in bitumen, said polymer additive, which may be comprised of various polymers, being comprised of from 20-100 wt. % of a polyalkyl (meth)acrylate comprising monomer units as follows:50-100 wt. % of alkyl (meth)acrylates containing alkyl groups of 8-26 C atoms;0-30 wt. % of alkyl (meth)acrylates containing alkyl groups of 1-7 C atoms; and0-20 wt. % of other monomers, optionally containing functional groups;and said polymer having a molecular weight Mw>1,000,000, corresponding to a viscosity number .eta..sub.sp /c>120 ml/g as measured in chloroform at 20.degree. C.

Abstract: Multifunctional additives for lubricating oils containing n-paraffins, said additives comprising a solvent and a blend of polymers containing(I) from 10 to 99 percent by weight of one or more polymers P1 composed of monomers of(A) esters of methacrylic acid, acrylic acid, or both(a) with a linear alcohol having from 16 to 30 carbon atoms,(b) with a branched alcohol having from 8 to 40 carbon atoms, and optionally, other alcohols, and(II) from 1 to 90 percent by weight to one or more polymers P2 composed of monomers of(A') esters of methacrylic acid, acrylic acid, or both(a') with a linear alcohol having from 16 to 30 carbon atoms, and, optionally other alcohols.

Abstract: Additives for n-paraffin-containing lubricating oils, which additives are mixtures of acrylates containing(I) from 10 to 99 weight percent of polymers P.sub.1 composed of(a) esters of methacrylic acid and/or acrylic acid and linear C.sub.6 to C.sub.15 alcohols;(b) esters of methacrylic acid and/or acrylic acid and linear C.sub.16 to C.sub.30 alcohols;(c) esters of methacrylic acid and/or acrylic acid and branched C.sub.8 to C.sub.40 alcohols;(d) esters of methacrylic acid and/or acrylic acid and C.sub.1 to C.sub.5 alcohols; and(e) monomers having functional groups, the amount of (b) being at the most 5 mol percent; and(II) from 90 to 1 weight percent of polymers P.sub.2 composed of(a') esters of methacrylic acid and/or acrylic acid and linear C.sub.6 to C.sub.15 alcohols;(b') esters of methacrylic acid and/or acrylic acid and linear C.sub.16 to C.sub.30 alcohols;(c') esters of methacrylic acid and/or acrylic acid and branched C.sub.8 to C.sub.

Abstract: An agent for improving the flow properties of middle distillates, said agent being a solution consisting essentially of a solvent having a boiling point of at least 50.degree. C. at 760 mm Hg and a graft copolymer formed from(a) as the grafting monomer, 20 to 80 percent by weight of an ester of methacrylic acid and a C.sub.8 to C.sub.15 alkanol, and(b) as the backbone polymer, from 80 to 20 percent by weight of an ethylene/vinyl acetate copolymer or of a terpolymer formed from ethylene, vinyl acetate, and a substituted olefin having form 3 to 50 carbon atoms, said backbone polymer having a reduced viscosity of 6 to 50 ml/g and degree of branching between 3 and 15 CH.sub.3 groups per 100 CH.sub.2 groups.

Abstract: Concentrated emulsions, adaptable to use as pour point improvers, of (1) copolymers of ethylene and a vinyl ester of a C.sub.1 -C.sub.24 -carboxylic acid and/or (2) polyalkyl(meth)acrylic acid ester polymers in a liquid carrier medium which does not dissolve said polymers, said emulsions additionally containing, as an emulsifier, a graft- or block-copolymer of the formulaA--Y,wherein A is a segment of a copolymer of ethylene and a vinyl ester of a C.sub.1 -C.sub.24 -carboxylic acid (corresponding to polymer P1) or of a polymer of esters of acrylic acid and/or methacrylic acid with a C.sub.1 -C.sub.20 -alkanol, wherein Y is at least one segment obtained by the polymerization of vinyl monomers which are predominantly esters of acrylic acid or methacrylic acid with a C.sub.1 -C.sub.40 -alkanol, and wherein the carrier medium is capable of dissolving segments Y; oils containing such emulsions as pour point improvers.

Abstract: Polymers adaptable to use as pour point lowering additives for petroleum oils, said polymers comprising as comonomers therein(a) from 10 to 30 mole percent of methyl methacrylate,(b) from 10 to 70 mole percent of alkyl methacrylates having linear alkyl groups with from 16 to 30 carbon atoms in the alkyl group,(c) from 10 to 80 mole percent of alkyl methacrylates having linear alkyl groups with from 4 to 15 carbon atoms in the alkyl group and/or having branched alkyl groups with from 4 to 40 carbon atoms in the alkyl group,(d) from 0 to 30 mole percent of a free-radically polymerizable nitrogen-containing monomer having dispersing action,and petroleum oils containing such polymers as pour point lowering additives.

Abstract: Multirange lubricating oils having high shear stability comprising paraffinic oils as their base and containing, as an additive improving the viscosity index, a mixture of at least two different polymer species, each of said polymer species being composed of monomers selected from the group consisting of(a) esters of methacrylic acid and acrylic acid with linear alcohols having 6 to 15 carbon atoms,(b) esters of methacrylic acid and acrylic acid with linear alcohols having from 16 to 30 carbon atoms,(c) esters of methacrylic acid and acrylic acid with branched alcohols having from 6 to 40 carbon atoms,(d) esters of methacrylic acid and acrylic acid with alcohols having from 1 to 5 carbon atoms, and(e) other monomers, different from (a)-(d), susceptible to free-radical copolymerization, and containing functional groups in the molecule,monomer or monomers (a) being from 0 to 100 mole percent of said polymer species, monomer(s) (b) being from 0 to 10 mole percent, monomers (c), (d) and (e) combined being from 0