Patent US4589990A successfully refreshed from Google Patents.
US4589990A
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Mist lubricant compositions
Assignee: Cognis Corp
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Filing: 1985-06-21
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Granted: 1986-05-20
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Expires: 2005-06-21
Abstract
Abstract Improved mist lubricant compositions containing specific synthetic esters and a mixture of polyisobutylene polymers having different molecular weights are provided. Synthetic esters employed for the compositions are polyol esters, trimellitate esters, and polymeric fatty acid esters.
Inventors
- 👤 Eugene R. Zehler
- 👤 Bruce J. Beimesch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:31
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/041; C10M105/00; C10M105/08; C10M105/32; C10M105/36; C10M105/38; C10M107/00; C10M107/02; C10M107/08; C10M143/00; C10M143/06; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/0265; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/2825; C10M2207/283; C10M2207/2835; C10M2207/284; C10M2207/285; C10M2207/2855; C10M2207/286; C10M2207/34; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/30; C10N2040/32; C10N2040/34; C10N2040/36; C10N2040/38; C10N2040/40; C10N2040/42; C10N2040/44; C10N2040/50
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
182 words
An improved lubricant composition suitable for misting comprising: (1) 45 to 95 parts by weight of a synthetic ester having a viscosity of 15 to 300 centistokes at 40° C. and selected from the group consisting of (a) polyol esters derived from an aliphatic polyol having from 2 to 8 hydroxyl groups and 3 to 12 carbon atoms and an aliphatic monocarboxylic acid or mixture of aliphatic monocarboxylic acids having from 5 to 20 carbon atoms; (b) trimellitate esters derived from trimellitic acid or trimellitic anhydride and an aliphatic alcohol having from 5 to 16 carbon atoms; and (c) polymeric fatty acid esters derived from a polymeric fatty acid containing 75% or more C 36 dimer acid and a C 2-13 mono-functional alcohol; (2) 8 to 40 parts by weight, on a 100% polymer basis, polyisobutylene having an average molecular weight from 4,000 to 10,000; and (3) 0.1 to 1 part by weight, on a 100% polymer basis, polyisobutylene having an average molecular weight from 25,000 to 300,000; and said composition having a viscosity of 125 to 750 centistokes at 40° C.
Claim 2
Dependent Claim
182 words
An improved lubricant composition suitable for misting comprising: (1) 45 to 95 parts by weight of a synthetic ester having a viscosity of 15 to 300 centistokes at 40° C. and selected from the group consisting of (a) polyol esters derived from an aliphatic polyol having from 2 to 8 hydroxyl groups and 3 to 12 carbon atoms and an aliphatic monocarboxylic acid or mixture of aliphatic monocarboxylic acids having from 5 to 20 carbon atoms; (b) trimellitate esters derived from trimellitic acid or trimellitic anhydride and an aliphatic alcohol having from 5 to 16 carbon atoms; and (c) polymeric fatty acid esters derived from a polymeric fatty acid containing 75% or more C 36 dimer acid and a C 2-13 mono-functional alcohol; (2) 8 to 40 parts by weight, on a 100% polymer basis, polyisobutylene having an average molecular weight from 4,000 to 10,000; and (3) 0.1 to 1 part by weight, on a 100% polymer basis, polyisobutylene having an average molecular weight from 25,000 to 300,000; and said composition having a viscosity of 125 to 750 centistokes at 40° C.
Claim 3
Dependent Claim
80 words
The lubricant composition of claim 1 wherein the polyol ester (a) is derived from an aliphatic polyol having 5 to 8 carbon atoms and 2 to 4 hydroxyl groups and has an acid value less than 15 and hydroxyl value less than 100; the trimellitate ester (b) has an acid value less than 15 and hydroxyl value less than 10; and the polymeric fatty acid ester (c) has an acid value less than 100 and hydroxyl value less than 10.
Claim 4
Dependent Claim
30 words
The lubricant composition of claim 2 wherein polyisobutylene (2) has an average molecular weight of 4,500 to 8,500 and polyisobutylene (3) has an average molecular weight of 50,000 to 200,000.
Claim 5
Dependent Claim
33 words
The lubricant composition of claim 3 which has a viscosity of 175 to 550 centistokes and contains 55 to 85 parts (1), 12 to 30 parts (2), and 0.25 to 0.85 part (3).
Claim 6
Dependent Claim
81 words
The lubricant composition of claim 4 wherein (a) is derived from a polyol selected from the group neopentyl glycol, 2,2-dimethyl-3-hydroxypropyl-2,2-dimethyl-3-hydroxypropionate, 2,2,4-trimethyl-1,5-pentanediol, trimethylolethane, trimethylolpropane, glycerol, pentaerythritol, dipentaerythritol, tripentaerythritol and a C 12-18 aliphatic monocarboxylic acid or acid mixture; (b) is derived from trimellitic acid or trimellitic anhydride and a C 10-13 aliphatic alcohol or alcohol mixture; and (c) is derived from a polymeric fatty acid containing 85% or more C 36 dimer acid and a C 8-10 aliphatic mono-alcohol or mono-alcohol mixture.
Claim 7
Dependent Claim
31 words
The lubricant composition of claim 5 wherein (a) is trimethylolpropane trioleate or trimethylolpropane triisostearate; (b) is isodecyl trimellitate, isotridecyl trimellitate, or isodecyl/isotridecyl trimellitate; and (c) is diisodecyl dimerate or di-2-ethylhexyl dimerate.
Claim 8
Dependent Claim
90 words
The lubricant composition of claim 1 which additionally contains up to 8 weight percent additives and wherein the polyol ester (a) is derived from an aliphatic polyol having 5 to 8 carbon atoms and 2 to 4 hydroxyl groups and has an acid value less than 15 and hydroxyl value less than 100; the trimellitate ester (b) has an acid value less than 15 and hydroxyl value less than 10; and the polymeric fatty acid ester (c) has an acid value less than 100 and hydroxyl value less than 10.
Claim 9
Dependent Claim
30 words
The lubricant composition of claim 7 wherein polyisobutylene (2) has an average molecular weight of 4,500 to 8,500 and polyisobutylene (3) has an average molecular weight of 50,000 to 200,000.
Claim 10
Dependent Claim
33 words
The lubricant composition of claim 8 which has a viscosity of 175 to 550 centistokes and contains 55 to 85 parts (1), 12 to 30 parts (2), and 0.25 to 0.85 part (3).
Claim 11
Dependent Claim
81 words
The lubricant composition of claim 9 wherein (a) is derived from a polyol selected from the group neopentyl glycol, 2,2-dimethyl-3-hydroxypropyl-2,2-dimethyl-3-hydroxypropionate, 2,2,4-trimethyl-1,5-pentanediol, trimethylolethane, trimethylolpropane, glycerol, pentaerythritol, dipentaerythritol, tripentaerythritol and a C 12-18 aliphatic monocarboxylic acid or acid mixture; (b) is derived from trimellitic acid or trimellitic anhydride and a C 10-13 aliphatic alcohol or alcohol mixture; and (c) is derived from a polymeric fatty acid containing 85% or more C 36 dimer acid and a C 8-10 aliphatic mono-alcohol or mono-alcohol mixture.
Claim 12
Dependent Claim
31 words
The lubricant composition of claim 10 wherein (a) is trimethylolpropane trioleate or trimethylolpropane triisostearate; (b) is isodecyl trimellitate, isotridecyl trimellitate, or isodecyl/isotridecyl trimellitate; and (c) is diisodecyl dimerate or di-2-ethylhexyl dimerate.
Claim 13
Dependent Claim
115 words
A lubricant composition suitable for misting having a 40° C. viscosity of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester from the group consisting of trimethylolpropane trioleate and trimethylolpropane triisostearate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, 0.5 to 1.5 parts antioxidant, 0.3 to 2 parts antiwear agent, 1.0 to 2.0 parts extreme pressure agent, and 0.02 to 0.2 part metal deactivator or corrosion inhibitor.
Claim 14
Dependent Claim
115 words
A lubricant composition suitable for misting having a 40° C. viscosity of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester from the group consisting of trimethylolpropane trioleate and trimethylolpropane triisostearate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, 0.5 to 1.5 parts antioxidant, 0.3 to 2 parts antiwear agent, 1.0 to 2.0 parts extreme pressure agent, and 0.02 to 0.2 part metal deactivator or corrosion inhibitor.
Claim 15
Dependent Claim
129 words
A lubricant composition suitable for misting having a 40° C. viscosity of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the group consisting of isodecyl trimellitate, isotridecyl trimellitate, and isodecyl/isotridecyl trimellitate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, 0.5 to 1.5 parts antioxidant, 0.3 to 2 parts antiwear agent, 1.0 to 2.0 parts extreme pressure agent, and 0.02 to 0.2 part metal deactivator or corrosion inhibitor.
Claim 16
Dependent Claim
129 words
A lubricant composition suitable for misting having a 40° C. viscosity of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the group consisting of isodecyl trimellitate, isotridecyl trimellitate, and isodecyl/isotridecyl trimellitate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, 0.5 to 1.5 parts antioxidant, 0.3 to 2 parts antiwear agent, 1.0 to 2.0 parts extreme pressure agent, and 0.02 to 0.2 part metal deactivator or corrosion inhibitor.
Claim 17
Dependent Claim
130 words
A lubricant composition suitable for misting having a 40° C. viscosity of 40° C. of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the group consisting of diisodecyl dimerate and di-2-ethylhexyl dimerate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, 0.5 to 1.5 parts antioxidant, 0.3 to 2 parts antiwear agent, 1.0 to 2.0 parts extreme pressure agent, and 0.02 to 0.2 part metal deactivator or corrosion inhibitor.
Claim 18
Dependent Claim
130 words
A lubricant composition suitable for misting having a 40° C. viscosity of 40° C. of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the group consisting of diisodecyl dimerate and di-2-ethylhexyl dimerate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, 0.5 to 1.5 parts antioxidant, 0.3 to 2 parts antiwear agent, 1.0 to 2.0 parts extreme pressure agent, and 0.02 to 0.2 part metal deactivator or corrosion inhibitor.
Claim 19
Dependent Claim
110 words
A lubricant composition suitable for misting having a 40° C. viscosity of 175 to 550 centistokes comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the group consisting of trimethylolpropane trioleate and trimethylolpropane triisostearate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, and up to 5 parts by weight of a multipurpose additive package.
Claim 20
Dependent Claim
110 words
A lubricant composition suitable for misting having a 40° C. viscosity of 175 to 550 centistokes comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the group consisting of trimethylolpropane trioleate and trimethylolpropane triisostearate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, and up to 5 parts by weight of a multipurpose additive package.
Claim 21
Dependent Claim
113 words
A lubricant composition suitable for misting having a 40° C. viscosity of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the groups consisting of isodecyl trimellitate, isotridecyl trimellitate, and isodecyl/isotridecyl trimellitate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, and up to 5 parts by weight of a multipurpose additive package.
Claim 22
Dependent Claim
113 words
A lubricant composition suitable for misting having a 40° C. viscosity of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the groups consisting of isodecyl trimellitate, isotridecyl trimellitate, and isodecyl/isotridecyl trimellitate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 4,000 to 10,000, 0.1 to 1 part by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, and up to 5 parts by weight of a multipurpose additive package.
Claim 23
Dependent Claim
86 words
A lubricant composition suitable for misting having 40° C. viscosity of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the group consisting of diisodecyl dimerate and di-2-ethylhexyl dimerate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, and up to 5 parts by weight of a multipurpose additive package.
Claim 24
Dependent Claim
86 words
A lubricant composition suitable for misting having 40° C. viscosity of 175 to 550 centistokes and comprised of 45 to 85 parts by weight of a synthetic ester having a 40° C. viscosity of 50 to 250 centistokes and selected from the group consisting of diisodecyl dimerate and di-2-ethylhexyl dimerate, 8 to 40 parts by weight, on a 100 percent polymer basis, of a polyisobutylene having an average molecular weight from 25,000 to 300,000, and up to 5 parts by weight of a multipurpose additive package.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |