US3792983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene and acrylate esters, their preparation and their use as wax crystal modifiers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1971-05-07
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Granted: 1974-02-19
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Expires: 1991-05-07
Abstract
Abstract Copolymers of about 4 to 40 molar proportions of ethylene and one molar proportion of acrylate ester, having number average molecular weights of 1,000 to 50,000 and prepared by free radical catalysis under pressures above 2,000 psig. are useful as wax crystal modifiers.
Inventors
- 👤 N Tunkel
- 👤 H Miller
- 👤 M Wisotsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:36
CPC Classifications
C; C08; C08F; C08F10/00; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/192; C10L1/195; C10L1/196; C10L1/1963
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
25 words
A composition according to claim 1, where X is hydrogen, and said acrylate is selected from the group consisting of ethyl acrylate and isobutyl acrylate.
Claim 2
Dependent Claim
12 words
A composition according to claim 2, wherein said acrylate is isobutyl acrylate.
Claim 3
Dependent Claim
12 words
A composition according to claim 2, wherein said acrylate is ethyl acrylate.
References Cited (Backward Citations)
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Cited
US3089897A
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US3260728A
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US3447915A
Cited
US3638349A
Cited
US3620696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |