US3240732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low moisture absorption interpolymers of caprolactam with i to 10 mole percent of dimer acid and diamine
Assignee: Gulf Oil Corp
•
Filing: 1961-01-11
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Granted: 1966-03-15
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Expires: 1981-01-11
Abstract
No abstract record available.
Inventors
- 👤 George E Ham
- 👤 James C Werner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:08
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34; C08G69/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A LOW MOISTURE ABSORPTION INTERPOLYMER OF CAPROLACTAM, A DICARBOXYLIC ACID HAVING 32 TO 44 CARBONS AND A DIAMINE INTERPOLYMERIZED TOGETHER SIMULTANEOUSLY, SAID ACID AND SAID DIAMINE EACH BEING PRESENT IN FROM 1 TO 10 MOLE PERCENT BASED ONT HE INTERPOLYMER, WITH SAID DIAMINE BEING SELECTED FROM THE CLASS CONSISTING OF M-XYLYENEDIAMINE AND ALPHA-OMEGA ALIPHATIC DIAMINES CONTAINING UP TO 12 CARBON ATOMS, AND WITH SAID DICARBOXYLIC ACID BEING A DIMER OF UNSATURATED MONOCARBOXYLIC ACIDS.
Claim 2
Dependent Claim
73 words
A LOW MOISTURE ABSORPTION INTERPOLYMER OF CAPROLACTAM, A DICARBOXYLIC ACID HAVING 32 TO 44 CARBONS AND A DIAMINE INTERPOLYMERIZED TOGETHER SIMULTANEOUSLY, SAID ACID AND SAID DIAMINE EACH BEING PRESENT IN FROM 1 TO 10 MOLE PERCENT BASED ONT HE INTERPOLYMER, WITH SAID DIAMINE BEING SELECTED FROM THE CLASS CONSISTING OF M-XYLYENEDIAMINE AND ALPHA-OMEGA ALIPHATIC DIAMINES CONTAINING UP TO 12 CARBON ATOMS, AND WITH SAID DICARBOXYLIC ACID BEING A DIMER OF UNSATURATED MONOCARBOXYLIC ACIDS.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |