Patent US3624042A successfully refreshed from Google Patents.
US3624042A
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Carboxy terminated polymer and cured derivative thereof
Assignee: Aerojet Rocketdyne Inc
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Filing: 1965-08-18
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Granted: 1971-11-30
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Expires: 1985-08-18
Abstract
Abstract wherein R1 is selected from the group consisting of hydrogen and methyl and p is an integer having a value of from about 12 to about 120; and wherein when m is 3, R is a trivalent radical of the formula , and wherein A2 is a lower alkylene radical, r is an integer having a value of from about 8 to about 75, and R2 is a trivalent alkylene radical. D R A W I N G
Inventors
- 👤 Hyman R Lubowitz
- 👤 Charles Kuchar
- 👤 Harold L Greenberg
- 👤 Raymond M Price
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:11
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/331; C08G65/332; C08G65/3322; C06; C06B; C06B45/00; C06B45/04; C06B45/06; C06B45/10; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4246
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
8 words
A liquid carboxy-terminated polymeric adduct having the formula
Claim 2
Dependent Claim
8 words
A liquid carboxy-terminated polymeric adduct having the formula
Claim 3
Dependent Claim
9 words
A new liquid carboxy-terminated polymeric adduct having the formula
Claim 4
Dependent Claim
9 words
A new liquid carboxy-terminated polymeric adduct having the formula
Claim 5
Dependent Claim
9 words
A liquid carboxy-terminated polymeric adduct having the general formula
Claim 6
Dependent Claim
9 words
A liquid carboxy-terminated polymeric adduct having the general formula
Claim 7
Independent Claim
18 words
The method of preparing liquid carboxy-terminated polymeric adducts which comprises reacting an aromatic acid anhydride having the formula
Claim 8
Independent Claim
18 words
The method of preparing liquid carboxy-terminated polymeric adducts which comprises reacting an aromatic acid anhydride having the formula
Claim 9
Dependent Claim
18 words
A cured rubber composition comprising the reaction product of a liquid carboxy-terminated polymeric adduct having the generic formula
Claim 10
Dependent Claim
18 words
A cured rubber composition comprising the reaction product of a liquid carboxy-terminated polymeric adduct having the generic formula
Claim 11
Independent Claim
18 words
The method of preparing a cured rubber composition comprising interblending a liquid carboxy-terminated polymeric adduct having the formula
Claim 12
Independent Claim
18 words
The method of preparing a cured rubber composition comprising interblending a liquid carboxy-terminated polymeric adduct having the formula
Claim 13
Dependent Claim
13 words
The method of claim 7 wherein the curing is effected at room temperature.
Claim 14
Independent Claim
34 words
The method of preparing a cured rubber composition comprising interblending about five to about 40 parts by weight per 100 parts of the rubber composition of a liquid carboxy-terminated polymeric adduct having the formula
Claim 15
Independent Claim
34 words
The method of preparing a cured rubber composition comprising interblending about five to about 40 parts by weight per 100 parts of the rubber composition of a liquid carboxy-terminated polymeric adduct having the formula
Claim 16
Dependent Claim
14 words
The method of claim 9 wherein the curing is carried out at room temperature.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |