US3965150A
Expired / Lapsed
US
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Polyether esters of alkenoic acids
Assignee: General Electric Co
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Filing: 1975-01-13
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Granted: 1976-06-22
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Expires: 1995-01-13
Abstract
Abstract A compound havng the formula: ##EQU1## WHERE R and R' are monovalent hydrocarbon radicals of less than 8 carbon atoms and R 2 is selected from alkylene and arylene radicals of less than 20 carbon atoms, n is an integer that varies from 2 to 4, x varies from 5 to 30, for the case n is equal to 2 and x varies from 1 to 40, for the case n is equal to 3 and 4 where there may be ether units with n equal to 2, 3 and 4 in the same molecule, a is a number varying from 1.51 to 1.99 and b varies from 0.019 to 0.45 where the sum of a + b varies from 2.012 to 2.1.
Inventors
- 👤 Richard E. Moeller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:53
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/46
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
60 words
A compound having the structural formula ##EQU19## where R' is a monovalent hydrocarbon radical of less than 8 carbon atoms, R 3 is a divalent radical selected from arylene and alkylene radicals of less than 20 carbon atoms, c is a whole number varying from 5 to 30 and d and e are whole numbers varying from 0 to 40.
Claim 2
Dependent Claim
60 words
A compound having the structural formula ##EQU19## where R' is a monovalent hydrocarbon radical of less than 8 carbon atoms, R 3 is a divalent radical selected from arylene and alkylene radicals of less than 20 carbon atoms, c is a whole number varying from 5 to 30 and d and e are whole numbers varying from 0 to 40.
Claim 3
Dependent Claim
23 words
A compound of claim 1 wherein R 3 is a methylene radical, e is equal to 0 and R' is a butyl radical.
References Cited (Backward Citations)
US3594410A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |