US3965146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Biphenylyloxy benzoic acid and esters thereof
Assignee: Raychem Corp
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Filing: 1975-04-11
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Granted: 1976-06-22
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Expires: 1995-04-11
Abstract
Abstract Polymers whose repeating units are of structure ##SPC1## Are prepared by polymerization of novel biphenylyloxybenzoyl moiety-containing monomers reactive in HF and BF 3 to form carboxonium ion-containing intermediates (e.g., biphenylyloxybenzoyl halide monomers), preferably in the presence of aromaic capping agents sufficient in amount to yield polymer of mean inherent viscosity from about 0.5 to 1.7. Such polymer may be employed, e.g., for insulative coating of conductive articles such as wire and cable.
Inventors
- 👤 Klaus J. Dahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:25
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/307; C; C08; C08G; C08G61/00; C08G61/12; C08G61/127
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
21 words
A compound of structure ##SPC5## wherein, R is selected from the group consisting of hydroxyl, or C 1 -C 3 alkoxy.
Claim 2
Dependent Claim
21 words
A compound of structure ##SPC5## wherein, R is selected from the group consisting of hydroxyl, or C 1 -C 3 alkoxy.
Claim 3
Dependent Claim
10 words
A compound according to claim 1 wherein R is hydroxyl.
Claim 4
Dependent Claim
12 words
A compound according to claim 1 wherein R is ethoxy or methoxy.
Claim 5
Dependent Claim
21 words
A compound of structure ##SPC6## wherein R is selected from the group consisting of hydroxyl, or C 1 -C 3 alkoxy
Claim 6
Dependent Claim
21 words
A compound of structure ##SPC6## wherein R is selected from the group consisting of hydroxyl, or C 1 -C 3 alkoxy
Claim 7
Dependent Claim
10 words
A compound according to claim 4 wherein R is hydroxyl.
Claim 8
Dependent Claim
12 words
A compound according to claim 4 wherein R is ethoxy or methoxy.
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) | 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 |