US3681440A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of tetrahydroxy dineoalkyl ethers
Assignee: Monsanto Co
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Filing: 1969-06-12
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Granted: 1972-08-01
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Expires: 1989-06-12
Abstract
Abstract Esters of organic monocarboxylic acids and dineoalkyl ethers with a tetrahydroxy functionality and corresponding to the general structure WHEREIN EACH R is an alkyl, aryl, or alkyaryl group of one to 12 carbon atoms. These compounds are effective as high performance functional fluids and lubricant base stocks over a wide temperature range.
Inventors
- 👤 Virgil W Gash
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:36
CPC Classifications
C; C10; C10M; C10M3/00; C11; C11C; C11C3/00; C11C3/003; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/109; C10N; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/08; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
21 words
An ester of claim 1 wherein R1 and R2 are individually selected from the group consisting of CH3, C2H5, and C3H7.
Claim 2
Dependent Claim
28 words
An ester of claim 1 wherein R3, R4, R5 and R6 are residues of acids individually selected from the group consisting of acetic, butyric, valeric, pelargonic, and neoheptanoic.
Claim 3
Dependent Claim
24 words
An ester of claim 1 selected from the group consisting of a. di-trimethylolpropane tetraacetate, b. di-trimethylolpropane tetrabutyrate, c. di-trimethylolpropane tetravalerate, and d. di-trimethylolpropane tetraneohepanoate.
Claim 4
Dependent Claim
34 words
An ester of claim 1 wherein R1 and R2 are CH3, and R3, R4, R5 and R6 are alkyl residues of acids individually selected from the group consisting of acetic, butyric, valeric, and neoheptanoic.
Claim 5
Dependent Claim
2 words
Di-trimethylolethane tetravalerate.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |