US4839074A — Specified C14 -carboxylate/vinyl ester polymer-co…

Claim 1

Independent Claim 165 words

A composition capable of improving at least the low temperature flow properties of a lubricating oil composition containing a Viscosity Index Improver, comprising, as a first component at least one of (a) low molecular weight polymer of unsaturated carboxy ester having the formula: ##STR6## wherein R' is selected from the group consisting of hydrogen and COOR and wherein R is a C 14 alkyl group and (b) low molecular weight copolymer of the carboxy ester of formula (I), and vinyl ester represented by the formula: ##STR7## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms, and as a second component at least one lubricating oil flow improver comprising low molecular weight non-ethylene containing polymer or interpolymer containing pendent ester groups, having repeating methylene units derived from a mixture of alcohols present within the structure of said pendant ester groups; the weight ratio of said second component to said first component in said composition varying from about 1:0.3 to about 1:0.9.

Claim 2

Dependent Claim 165 words

A composition capable of improving at least the low temperature flow properties of a lubricating oil composition containing a Viscosity Index Improver, comprising, as a first component at least one of (a) low molecular weight polymer of unsaturated carboxy ester having the formula: ##STR6## wherein R' is selected from the group consisting of hydrogen and COOR and wherein R is a C 14 alkyl group and (b) low molecular weight copolymer of the carboxy ester of formula (I), and vinyl ester represented by the formula: ##STR7## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms, and as a second component at least one lubricating oil flow improver comprising low molecular weight non-ethylene containing polymer or interpolymer containing pendent ester groups, having repeating methylene units derived from a mixture of alcohols present within the structure of said pendant ester groups; the weight ratio of said second component to said first component in said composition varying from about 1:0.3 to about 1:0.9.

Claim 3

Dependent Claim 64 words

The composition of claim 1, wherein said second component lubricating oil flow improver is at least one member selected from the group consisting of (a) polyacrylates, (b) poly-2-alkylacrylates, and (c) interpolymers comprised of esterified C 4 to C 10 monoethylenically unsaturated dicarboxylic acid or anhydride and a comonomer selected from the group consisting of vinyl ester, C 6 to C 46 alpha-olefin, and styrene.

Claim 4

Dependent Claim 44 words

The composition of claim 1 wherein said first component is a copolymer of dicarboxy ester of Formula (I), wherein R' is COOR and vinyl ester represented by the formula: ##STR8## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms.

Claim 5

Dependent Claim 12 words

The composition of claim 3 wherein said vinyl ester comprises vinyl acetate.

Claim 6

Dependent Claim 71 words

The composition of claim 3 wherein said second component is polymer or interpolymer of unsaturated mono-ester represented by the formula: ##STR9## wherein, R 2 is hydrogen or C 1 to C 5 alkyl, and R 4 is C 1 to C 20 alkyl, with the proviso that the average number of carbon atoms in the groups constituting R 4 in the polymer or interpolymer is from about 10 to about 18.

Claim 7

Dependent Claim 51 words

The composition of claim 3 wherein said first component is a copolymer of C 14 -dialkyl fumarate and vinyl ester, and said second component is interpolymer of dialkyl fumarate and vinyl ester, wherein the alkyl portions of said dialkyl fumarate of said second component are derived from a mixture of alcohols.

Claim 8

Dependent Claim 36 words

The composition of claim 6 wherein the alkyl portions of said dialkyl fumarate of said second component interpolymer are derived from a mixture of alcohols having an average carbon number from about 4 to about 20.

Claim 9

Dependent Claim 17 words

The composition of claim 7 wherein said average carbon number is from about 8 to about 18.

Claim 10

Dependent Claim 32 words

The composition of claim 6 wherein the mole ratio of dialkyl fumarate and vinyl ester used in preparing the interpolymers of said first and second components is from about 1.3:1 to 0.5:1.

Claim 11

Dependent Claim 25 words

The composition of any one of claims 6 to 9 wherein said vinyl ester employed for both said first and second component is vinyl acetate.

Claim 12

Dependent Claim 46 words

The composition of claim 3 wherein said second component is interpolymer comprised of (a) esterified C 4 to C 10 mono-ethylenically unsaturated dicarboxylic acid or anhydride, wherein the carboxy groups are located on vicinal carbons, and (b) at least one C 6 to C 46 alpha-monoolefin.

Claim 13

Dependent Claim 24 words

The composition of claim 11 wherein in said interpolymer of said second component, said esterified dicarboxylic acid or anhydride is derived from maleic anhydride.

Claim 14

Dependent Claim 36 words

The composition of claim 12 wherein in said interpolymer of said second component said esterified dicarboxylic anhydride is esterified with a mixture of alcohols having an average carbon number of from about 4 to about 20.

Claim 15

Dependent Claim 17 words

The composition of claim 13 wherein said average carbon number is from about 8 to about 18.

Claim 16

Dependent Claim 45 words

The composition of claim 12 wherein said alpha-olefin contains between about 10 and about 22 carbon atoms, and the mole ratio of alpha-olefin to maleic anhydride in the reaction mixture used to prepare the interpolymer of said second component is about 1.2:1 to about 0.8:1.

Claim 17

Dependent Claim 47 words

The composition of claim 11 wherein said first component is a copolymer of C 14 -dialkyl fumarate and vinyl ester, and the mole ratio of said dialkyl fumarate and vinyl ester in the reaction mixture used to prepare said interpolymer is from about 1.3:1 to about 0.5:1.

Claim 18

Dependent Claim 25 words

The composition of any one of claims 11 to 16 wherein said first component is a copolymer of C 14 -dialkyl fumarate and vinyl acetate.

Claim 19

Dependent Claim 38 words

The composition of claim 3 wherein said second component is interpolymer comprised of (a) esterified C 4 to C 10 -monoethylenically unsaturated dicarboxylic acid or anhydride, wherein the carboxy groups are located on vicinal carbons and (b) styrene.

Claim 20

Dependent Claim 16 words

The composition of claim 18 wherein said second component is a styrene esterified maleic anhydride interpolymer.

Claim 21

Dependent Claim 36 words

The composition of claim 19 wherein in said interpolymer of said second component the esterified portion thereof is derived from a mixture of alcohols having an average carbon number of from about 4 to about 20.

Claim 22

Dependent Claim 17 words

The composition of claim 20 wherein said average carbon number is from about 8 to about 18.

Claim 23

Dependent Claim 32 words

The composition of claim 20 wherein the mole ratio of styrene to maleic anhydride in the reaction mixture used to prepare said second component interpolymer is from about 3:1 to about 1:1.

Claim 24

Dependent Claim 47 words

The composition of claim 18 wherein said first component is a copolymer of C 14 -dialkyl fumarate and vinyl ester and the mole ratio of said dialkyl fumarate and vinyl ester in the reaction mixture used to prepare said interpolymer is from about 1.3:1 to about 0.5:1.

Claim 25

Dependent Claim 25 words

The composition of any one of claims 18 to 23 wherein said first component is a copolymer of C 14 -dialkyl fumarate and vinyl acetate.

Claim 26

Dependent Claim 24 words

The composition of claim 3 wherein the number average molecular weight of said first and second components is from about 1,500 to about 40,000.

Claim 27

Dependent Claim 24 words

The composition of claim 3 in combination with a viscosity index improving amount of a viscosity index improver comprising high molecular weight hydrocarbon polymer.

Claim 28

Dependent Claim 22 words

The composition of claim 26 wherein said viscosity index improver has a number average molecular weight of between about 40,000 and 300,000.

Claim 29

Dependent Claim 30 words

The composition of claim 26 wherein said viscosity index improver comprises a compound selected from the group consisting of the polymers and interpolymers of C 2 to C 30 olefins.

Claim 30

Dependent Claim 21 words

The composition of claim 28 wherein said viscosity index improver comprises interpolymer of ethylene and C 3 to C 30 olefin.

Claim 31

Dependent Claim 15 words

The composition of claim 29 wherein said C 3 to C 30 olefin comprises propylene.

Claim 32

Dependent Claim 34 words

The composition of claim 26 wherein said viscosity index improver comprises a compound selected from the group consisting of the hydrogenated and partially hydrogenated homopolymers and interpolymers of conjugated dienes and/or monovinyl aromatic compounds.

Claim 33

Dependent Claim 33 words

The composition of claim 30 wherein the weight ratio of the amount of said second component to the amount of said first component in said composition ranges from about 1:0.4 to about 1:0.6.

Claim 34

Dependent Claim 184 words

A lubricating oil composition comprising lubricating oil, and a dual additive composition in an amount and additive ratio effective to improve, relative to the absence of one or more components of said dual additive composition, at least the low temperature flow properties of said lubricating oil composition when also containing a viscosity index improving amount of a viscosity index improver, said dual additive composition comprising, as a first component at least one of (a) low molecular weight polymer of unsaturated carboxy ester having the formula: ##STR10## wherein R' is selected from the group consisting of hydrogen and COOR, and wherein R is a C 14 alkyl group, and (b) low molecular weight copolymer of carboxy ester of formula (I), and vinyl ester represented by the formula: ##STR11## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms, and as a second component at least one lubricating oil flow improver comprising low molecular weight non-ethylene-containing polymer or interpolymer containing pendent ester groups, having repeating methylene units derived from a mixture of alcohols present within the structure of said pendant ester groups.

Claim 35

Dependent Claim 184 words

A lubricating oil composition comprising lubricating oil, and a dual additive composition in an amount and additive ratio effective to improve, relative to the absence of one or more components of said dual additive composition, at least the low temperature flow properties of said lubricating oil composition when also containing a viscosity index improving amount of a viscosity index improver, said dual additive composition comprising, as a first component at least one of (a) low molecular weight polymer of unsaturated carboxy ester having the formula: ##STR10## wherein R' is selected from the group consisting of hydrogen and COOR, and wherein R is a C 14 alkyl group, and (b) low molecular weight copolymer of carboxy ester of formula (I), and vinyl ester represented by the formula: ##STR11## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms, and as a second component at least one lubricating oil flow improver comprising low molecular weight non-ethylene-containing polymer or interpolymer containing pendent ester groups, having repeating methylene units derived from a mixture of alcohols present within the structure of said pendant ester groups.

Claim 36

Dependent Claim 66 words

The lubricating oil composition of claim 33, wherein said second component lubricating oil flow improver is at least one member selected from the group consisting of (a) polyacrylates, (b) poly-2-alkyl acrylates, and (c) interpolymers comprised of esterified C 4 to C 10 mono-ethylenically unsaturated dicarboxylic acid or anhydride and comonomer selected from the group consisting of vinyl ester, C 6 to C 46 alpha-olefin, and styrene.

Claim 37

Dependent Claim 25 words

The lubricating oil composition of claim 34 wherein said lubricating oil has a viscosity of between about 2.5 and about 12 cs. at 100° C.

Claim 38

Dependent Claim 29 words

The lubricating oil composition of claim 34 wherein said first component is copolymer of dicarboxy ester of Formula (I) wherein R' is COOR and vinyl ester of Formula (II).

Claim 39

Dependent Claim 14 words

The lubricating oil composition of claim 36 wherein said vinyl ester comprises vinyl acetate.

Claim 40

Dependent Claim 21 words

The lubricating oil composition of claim 34 in combination with a viscosity index improver comprising a high molecular weight hydrocarbon polymer.

Claim 41

Dependent Claim 24 words

The lubricating oil composition of claim 38 wherein said viscosity index improver has a number average molecular weight of between about 40,000 and 300,000.

Claim 42

Dependent Claim 32 words

The lubricating oil composition of claim 38 wherein said viscosity index improver comprises a compound selected from the group consisting of the polymers and interpolymers of C 2 to C 30 olefins.

Claim 43

Dependent Claim 23 words

The lubricating oil composition of claim 40 wherein said viscosity index improver comprises interpolymer of ethylene and C 3 to C 30 olefin.

Claim 44

Dependent Claim 17 words

The lubricating oil composition of claim 41 wherein said C 3 to C 30 olefin comprises propylene.

Claim 45

Dependent Claim 36 words

The lubricating oil composition of claim 38 wherein said viscosity index improver comprises a compound selected from the group consisting of the hydrogenated and partially hydrogenated homopolymers and interpolymers of conjugated dienes and/or monovinyl aromatic compounds.

Claim 46

Dependent Claim 26 words

The lubricating oil composition of claim 33 wherein said dual additive composition is present in an amount comprising between about 0.005 and 0.7 wt. % thereof.

Claim 47

Dependent Claim 26 words

The lubricating oil composition of claim 33 wherein said dual additive composition is present in an amount comprising between about 0.02 and 0.5 wt. % thereof.

Claim 48

Dependent Claim 43 words

The lubricating oil composition of claim 33 wherein said first and second components are present in amounts such that the weight ratio of the amount of said second component to the amount of said first component is from about 1:0.3 to about 1:0.9.

Claim 49

Dependent Claim 43 words

The lubricating oil composition of claim 46 wherein said first and second components are present in amounts such that the weight ratio of the amount of said second component to the amount of said first component is from about 1:0.4 to about 1:0.6.

Claim 50

Dependent Claim 25 words

The lubricating oil composition of claim 39 wherein said third component is present in an amount of between about 0.6 and 2.8 wt. % thereof.

Claim 51

Dependent Claim 74 words

The lubricating oil composition of claim 36 wherein said second component is a polymer or interpolymer of an unsaturated mono-ester represented by the formula: ##STR12## wherein R 2 hydrogen or C 1 to C 5 alkyl and R 4 is C 1 to C 20 alkyl, with the proviso that the average number of carbon atoms in the group constituting R 4 in the polymer or interpolymer is from about 10 to about 18.

Claim 52

Dependent Claim 53 words

The lubricating oil composition of claim 36 wherein said first component is a copolymer of C 14 -dialkyl fumarate and vinyl ester and said second component is interpolymer of dialkyl fumarate and vinyl ester, wherein the alkyl portions of said dialkyl fumarate of said second component are derived from a mixture of alcohols.

Claim 53

Dependent Claim 39 words

The lubricating oil composition of claim 50 wherein the alkyl portions of said dialkyl fumarate of said second component interpolymer are derived from a mixture of alcohols having an average carbon number of from about 4 to about 20.

Claim 54

Dependent Claim 27 words

The lubricating oil composition of any one of claims 50 to 51 wherein said vinyl ester employed for both said first and second components is vinyl acetate.

Claim 55

Dependent Claim 48 words

The lubricating oil composition of claim 36 wherein said second component is interpolymer comprised of (a) esterified C 4 to C 10 mono-ethylenically unsaturated dicarboxylic acid or anhydride, wherein the carboxy groups are located on vicinal carbons, and (b) at least one C 6 to C 46 alpha-olefin.

Claim 56

Dependent Claim 26 words

The lubricating oil composition of claim 53 wherein in said interpolymer of said second component, said esterified dicarboxylic acid or anhydride is derived from maleic anhydride.

Claim 57

Dependent Claim 48 words

The lubricating oil composition of claim 36 wherein said first component is interpolymer of C 14 -dialkyl fumarate and vinyl ester, and the mole ratio of said dialkyl fumarate and vinyl ester in the reaction mixture used to prepare said interpolymer is from about 1.3:1 to about 0.5:1.

Claim 58

Dependent Claim 27 words

The lubricating oil composition of any one of claims 53, 55 or 56 wherein said first component is interpolymer of C 14 -dialkyl fumarate and vinyl acetate.

Claim 59

Dependent Claim 40 words

The lubricating oil composition of claim 36 wherein said second component is interpolymer comprised of (a) esterified C 4 to C 10 mono-ethylenically unsaturated dicarboxylic acid or anhydride, wherein the carboxy groups are located on vinical carbons and (b) styrene.

Claim 60

Dependent Claim 18 words

The lubricating oil composition of claim 57 wherein said second component is a styrene esterified maleic anhydride interpolymer.

Claim 61

Dependent Claim 47 words

The lubricating oil composition of claim 57 wherein said first component is interpolymer of C 14 -dialkyl fumarate and vinyl ester and the mole ratio of said dialkyl fumarate and vinyl ester in the reaction mixture used to prepare said interpolymer is from about 1.3:1 to 0.5:1.

Claim 62

Dependent Claim 27 words

The lubricating oil composition of any one of claims 57, 59 or 60 wherein said first component is interpolymer of C 14 -dialkyl fumarate and vinyl acetate.

Claim 63

Dependent Claim 170 words

A lubricating oil concentrate comprising lubricating oil, and a dual additive composition in an amount effective to improve, relative to the absence of either of said dual additive composition components, at least the low temperature flow properties of lubricating oil compositions derived from said concentrates, when containing viscosity index improver, said additive composition comprising as a first component, at least one of (a) low molecular weight polymer of unsaturated carboxy ester having the formula: ##STR13## wherein R' is selected from the group consisting of hydrogen and COOR, and wherein R is a C 14 alkyl group, and (b) low molecular weight copolymer of carboxy ester of formula (I), and vinyl ester represented by the formula: ##STR14## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms, and as a second component at least one lubricating oil flow improver comprising low molecular weight non-ethylene-containing polymer or interpolymer containing pendent ester groups, having repeating methylene units derived from a mixture of alcohols present in said pendant ester groups.

Claim 64

Dependent Claim 170 words

A lubricating oil concentrate comprising lubricating oil, and a dual additive composition in an amount effective to improve, relative to the absence of either of said dual additive composition components, at least the low temperature flow properties of lubricating oil compositions derived from said concentrates, when containing viscosity index improver, said additive composition comprising as a first component, at least one of (a) low molecular weight polymer of unsaturated carboxy ester having the formula: ##STR13## wherein R' is selected from the group consisting of hydrogen and COOR, and wherein R is a C 14 alkyl group, and (b) low molecular weight copolymer of carboxy ester of formula (I), and vinyl ester represented by the formula: ##STR14## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms, and as a second component at least one lubricating oil flow improver comprising low molecular weight non-ethylene-containing polymer or interpolymer containing pendent ester groups, having repeating methylene units derived from a mixture of alcohols present in said pendant ester groups.

Claim 65

Dependent Claim 26 words

The lubricating oil concentrate of claim 61 wherein said dual additive composition comprises from about 2 to about 90 wt. % of said lubricating oil. concentrate.

Claim 66

Dependent Claim 66 words

The lubricating oil concentrate of claim 62, wherein said second component lubricating oil flow improver is at least one member selected from the group consisting of (a) polyacrylates, (b) poly-2-alkyl acrylates, and (c) interpolymers comprised of esterified C 4 to C 10 mono-ethylenically unsaturated dicarboxylic acid or anhydride and comonomer selected from the group consisting of vinyl ester, C 6 to C 46 alpha-olefin, and styrene.

Claim 67

Dependent Claim 46 words

The lubricating oil concentrate of claim 63 wherein said first component is a copolymer of dicarboxy ester of Formula (I) wherein R' is COOR and vinyl ester represented by the formula: ##STR15## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms.

Claim 68

Dependent Claim 14 words

The lubricating oil concentrate of claim 64 wherein said vinyl ester comprises vinyl acetate.

Claim 69

Dependent Claim 25 words

The lubricating oil concentrate of claim 63 in combination with a viscosity index improving amount of viscosity index improver comprising high molecular weight hydrocarbon polymer.

Claim 70

Dependent Claim 75 words

The lubricating oil concentrate of claim 64 wherein said second component is a polymer or interpolymer of an unsaturated mono-ester represented by the formula: ##STR16## wherein R 2 is hydrogen or C 1 to C 5 alkyl and R 4 is C 1 to C 20 alkyl, with the proviso that the average number of carbon atoms in the group constituting R 4 in the polymer or interpolymer is from about 10 to about 18.

Claim 71

Dependent Claim 52 words

The lubricating oil concentrate of claim 64 wherein said first component is copolymer of C 14 -dialkyl fumarate and vinyl ester and said second component is interpolymer of dialkyl fumarate and vinyl ester, wherein the alkyl portions of said dialkyl fumarate of said second component are derived from a mixture of alcohols.

Claim 72

Dependent Claim 39 words

The lubricating oil concentrate of claim 68 wherein the alkyl portions of said dialkyl fumarate of said second component interpolymer are derived from a mixture of alcohols having an average carbon number of from about 4 to about 20.

Claim 73

Dependent Claim 27 words

The lubricating oil concentrate of any one of claims 68 to 70 wherein said vinyl ester employed for both said first and second components is vinyl acetate.

Claim 74

Dependent Claim 44 words

The lubricating oil concentrate of claim 64 wherein said second component is interpolymer of (a) esterified C 4 to C 10 mono-ethylenically unsaturated dicarboxylic acid or anhydride, wherein the carboxy groups are located on vicinal carbons, and (b) C 6 to C 46 alpha-olefin.

Claim 75

Dependent Claim 39 words

The lubricating oil concentrate of claim 64 wherein said second component is interpolymer of (a) esterified C 4 to C 10 mono-ethylenically unsaturated dicarboxylic acid or anhydride, wherein the carboxy groups are located on vicinal carbons and (b) styrene.

Claim 76

Dependent Claim 48 words

The lubricating oil concentrate of claim 72 wherein said first component is a copolymer of C 14 -dialkyl fumarate and vinyl ester and the mole ratio of said dialkyl fumarate and vinyl ester in the reaction mixture used to prepare said interpolymer is from about 1.3:1 to 0.5:1.

Claim 77

Dependent Claim 27 words

The lubricating oil concentrate of any one of claims 72 or 73 wherein said first component is a copolymer of C 14 -dialkyl fumarate and vinyl acetate.

Claim 78

Independent Claim 196 words

A method for improving at least the low temperature flow properties of a lubricating oil composition when containing a viscosity index improving amount of a viscosity index improver, which comprises adding to said lubricating oil composition a dual additive composition comprising as a first component at least one of (a) low molecular weight polymer of unsaturated carboxy ester having the formula: ##STR17## wherein R selected from the group consisting of hydrogen and COOR, and wherein R' is a C 14 alkyl group and (b) low molecular weight copolymer of carboxy ester of formula (I), and, vinyl ester represented by the formula: ##STR18## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms, and as a second component at least one lubricating oil flow improver comprising low molecular weight non-ethylene-containing polymer or interpolymer containing pendent ester groups, having repeating methylene units derived from a mixture of alcohols present within the structure of said pendant ester groups; the amount and additive ratio of said first and second components being effective to improve the low temperature flow properties of said lubricating oil composition relative to the absence of either of said first and second components.

Claim 79

Independent Claim 196 words

A method for improving at least the low temperature flow properties of a lubricating oil composition when containing a viscosity index improving amount of a viscosity index improver, which comprises adding to said lubricating oil composition a dual additive composition comprising as a first component at least one of (a) low molecular weight polymer of unsaturated carboxy ester having the formula: ##STR17## wherein R selected from the group consisting of hydrogen and COOR, and wherein R' is a C 14 alkyl group and (b) low molecular weight copolymer of carboxy ester of formula (I), and, vinyl ester represented by the formula: ##STR18## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms, and as a second component at least one lubricating oil flow improver comprising low molecular weight non-ethylene-containing polymer or interpolymer containing pendent ester groups, having repeating methylene units derived from a mixture of alcohols present within the structure of said pendant ester groups; the amount and additive ratio of said first and second components being effective to improve the low temperature flow properties of said lubricating oil composition relative to the absence of either of said first and second components.

Claim 80

Dependent Claim 66 words

The method of claim 75 wherein said second component lubricating oil flow improver is selected from at least one member selected from the group consisting of (a) polyacrylates, (b) poly-2-alkyl acrylates, and (c) interpolymers comprised of esterified C 4 to C 10 monoethylenically unsaturated dicarboxylic acid or anhydride and comonomer selected from the group consisting of vinyl ester, C 4 to C 46 alpha-monoolefin, and styrene.

Claim 81

Dependent Claim 27 words

The method of claim 76 including incorporating said dual additive composition into a lubricating oil composition containing a viscosity index improver comprising high molecular weight hydrocarbon polymer.

Claim 82

Dependent Claim 22 words

The method of claim 77 wherein said viscosity index improver has a number average molecular weight of between about 40,000 and 300,000.

Claim 83

Dependent Claim 44 words

The method of claim 75 wherein said first component is a copolymer of dicarboxy ester of Formula (I) wherein R' is COOR and vinyl ester represented by the formula: ##STR19## wherein R 1 comprises an alkyl group containing from 1 to 18 carbon atoms.

Claim 84

Dependent Claim 12 words

The method of claim 79 wherein said vinyl ester comprises vinyl acetate.

Claim 85

Dependent Claim 29 words

The method of claim 75 wherein said dual additive composition is included in said lubricating oil composition in an amount comprising between about 0.005 and 0.7 wt. % thereof.

Claim 86

Dependent Claim 29 words

The method of claim 75 wherein said dual additive composition is included in said lubricating oil composition in an amount comprising between about 0.02 and 0.5 wt. % thereof.

Claim 87

Dependent Claim 41 words

The method of claim 75 wherein said first and second components are present in amounts such that the weight ratio of the amount of said second component to the amount of said first component is from about 1:0.3 to about 1:0.9.

Claim 88

Dependent Claim 41 words

The method of claim 83 wherein said first and second components are present in amounts such that the weight ratio of the amount of said second component to the amount of said first component is from about 1:0.4 to about 1:0.6.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1992-06-12	1992-12-12	1993-06-13	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1996-06-12	1996-12-12	1997-06-13	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2000-06-12	2000-12-12	2001-06-13	$7700.00	Window Closed / Lapsed

Specified C14 -carboxylate/vinyl ester polymer-containing compositions for lubricating oil flow improvement

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