Patent US4265774A successfully refreshed from Google Patents.
US4265774A
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US
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Oxyalkylated polyglycerols and water-based lubricants prepared therefrom
Assignee: BASF Corp
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Filing: 1976-10-29
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Granted: 1981-05-05
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Expires: 1996-10-29
Abstract
Abstract High molecular weight polyglycerol derivatives, useful as thickening agents for water-based lubricants, are prepared by oxyalkylating a polyglycerol with ethylene oxide or a mixture of ethylene oxide and propylene oxide. The polyglycerol derivatives are characterized as having an average of more than five glycerol units, and in having more than 95% and preferably more than 99% alkylene oxide units. These compounds exhibit excellent shear strength and provide an improved hydrolube when incorporated therein.
Inventors
- 👤 William K. Langdon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:29
CPC Classifications
C; C07; C07C; C07C43/00; C07C43/02; C07C43/03; C07C43/04; C07C43/10; C07C43/11; C08; C08G; C08G65/00; C08G65/02; C08G65/26; C08G65/2603; C08G65/2606; C08G65/2609; C08G65/30; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/08; C10M2201/081; C10M2201/082; C10M2201/084; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/107; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10N; C10N2010/00; C10N2010/02; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
76 words
A composition of matter comprising a mixture of compounds having the formula: ##STR2## where R is hydrogen or a methyl group and in which at least 75% of the R groups are hydrogen, M is hydrogen or an alkali metal, m is an integer having an average value greater than 5, and n is an integer having an average value high enough to provide a compound mixture having an average molecular weight greater than about 20,000.
Claim 2
Dependent Claim
76 words
A composition of matter comprising a mixture of compounds having the formula: ##STR2## where R is hydrogen or a methyl group and in which at least 75% of the R groups are hydrogen, M is hydrogen or an alkali metal, m is an integer having an average value greater than 5, and n is an integer having an average value high enough to provide a compound mixture having an average molecular weight greater than about 20,000.
Claim 3
Dependent Claim
18 words
A composition, as defined in claim 1, in which the alkylene oxide moieties are substantially all ethylene oxide.
Claim 4
Dependent Claim
107 words
A hydrolube composition consisting essentially of from about 62 to about 92% by weight of water, from about 1 to about 3% by weight of additives, and from about 2 to about 20% by weight of a mixture of compounds having the formula: ##STR3## where R is hydrogen or a methyl group and in which at least 75% of the R groups are hydrogen, M is hydrogen or an alkali metal, m is an integer having an average value greater than 5, and n is an integer having an average value high enough to provide a compound mixture having an average molecular weight greater than about 20,000.
Claim 5
Dependent Claim
107 words
A hydrolube composition consisting essentially of from about 62 to about 92% by weight of water, from about 1 to about 3% by weight of additives, and from about 2 to about 20% by weight of a mixture of compounds having the formula: ##STR3## where R is hydrogen or a methyl group and in which at least 75% of the R groups are hydrogen, M is hydrogen or an alkali metal, m is an integer having an average value greater than 5, and n is an integer having an average value high enough to provide a compound mixture having an average molecular weight greater than about 20,000.
Claim 6
Dependent Claim
29 words
A hydrolube composition, as defined in claim 3, in which the defined mixture of compounds is present in a range of from about 5 to about 15% by weight.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-05-04 | 1984-11-03 | 1985-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-04 | 1988-11-03 | 1989-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-04 | 1992-11-03 | 1993-05-05 | $7700.00 | Window Closed / Lapsed |