US4601840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mist lubrication process
Assignee: Cognis Corp
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Filing: 1985-06-21
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Granted: 1986-07-22
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Expires: 2005-06-21
Abstract
Abstract An improved mist lubrication process whereby excellent lubrication and misting properties are obtained utilizing synthetic ester mist lubricants derived from specific polyol esters, trimellitate esters and dimer diesters and a mixture of polyisobutylene polymers having different molecular weights is provided.
Inventors
- 👤 Eugene R. Zehler
- 👤 Clark J. Flake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:16
CPC Classifications
C; C10; C10M; C10M169/00; C10M169/04; C10M169/041; C10M105/00; C10M105/08; C10M105/32; C10M105/36; C10M105/38; C10M143/00; C10M143/06; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/2825; C10M2207/283; C10M2207/2835; C10M2207/285; C10M2207/2855; C10M2207/286; C10M2207/34; C10N; C10N2020/00; C10N2020/01; C10N2050/00; C10N2050/015; C10N2050/02; C10N2050/04
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
245 words
In a lubrication process wherein a mist of a lubricant is generated in air at a pressure of about 10 to 100 psig, pneumatically transported to a metal surface to be lubricated, coalesced into larger droplets, and deposited on said metal surface to provide a lubricating film thereon, to achieve high throughput with good mist distribution and to obtain good lubrication properties, the improvement which comprises utilizing a lubricant composition 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 8 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 1--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
245 words
In a lubrication process wherein a mist of a lubricant is generated in air at a pressure of about 10 to 100 psig, pneumatically transported to a metal surface to be lubricated, coalesced into larger droplets, and deposited on said metal surface to provide a lubricating film thereon, to achieve high throughput with good mist distribution and to obtain good lubrication properties, the improvement which comprises utilizing a lubricant composition 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 8 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 1--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
24 words
The process of claim 1 wherein the air temperature is 125° F. to 200° F. and air pressure is 20 psig to 80 psig.
Claim 4
Dependent Claim
15 words
The process of claim 1 wherein the lubricant contains up to 8 weight percent additives.
Claim 5
Dependent Claim
79 words
The process 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 6
Dependent Claim
31 words
The process of claim 4 wherein the polyisobutylene (2) has an average molecular weight of 4,500 to 8,500 and the polyisobutylene (3) has an average molecular weight of 50,000 to 200,000.
Claim 7
Dependent Claim
37 words
The process of claim 5 wherein the mist lubricant has a 40° C. viscosity of 175 to 550 centistokes and contains 55 to 85 parts (1), 12 to 30 parts (2), and 0.25 to 0.85 parts (3).
Claim 8
Dependent Claim
79 words
The process of claim 6 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 polymeric fatty acid containing 85% or more C 36 dimer acid and a C 8-10 aliphatic mono-alcohol or mono-alcohol mixture.
Claim 9
Dependent Claim
30 words
The process of claim 7 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 10
Dependent Claim
188 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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 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; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 11
Dependent Claim
188 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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 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; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 12
Dependent Claim
190 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 13
Dependent Claim
190 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 14
Dependent Claim
188 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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 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; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 15
Dependent Claim
188 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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 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; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 16
Dependent Claim
171 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 17
Dependent Claim
171 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 18
Dependent Claim
174 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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, and up to 5 parts by weight of a multipurpose additive package; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 19
Dependent Claim
174 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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, and up to 5 parts by weight of a multipurpose additive package; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 20
Dependent Claim
182 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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 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, and up to 5 parts by weight of a multipurpose additive package; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
Claim 21
Dependent Claim
182 words
A process for the lubrication of bearings which comprises generating a mist of lubricant in air at a temperature of 125° F. to 200° F. and pressure of 20 psig to 80 psig, said lubricant 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 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, and up to 5 parts by weight of a multipurpose additive package; pneumatically transporting said mist to the bearing to be lubricated; coalescing said lubricant mist to the bearing to be lubricated; coalescing said lubricant mist into larger droplets; and depositing said coalesced lubricant on said bearing to provide a continuous lubricating film thereon.
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