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US3249629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamide of polymeric fat acids and 1, 3 or 1, 4-cyclohexane bis
Assignee: General Mills Inc
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Filing: 1963-03-15
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Granted: 1966-05-03
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Expires: 1983-03-15
Abstract
No abstract record available.
Inventors
- 👤 Edgar R Rogier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:09
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A TOUGH, FLEXIBLE POLYAMIDE COMPOSITION CONSISTING ESSENTIALLY OF THE CONDENSATION PRODUCT AT 150-300*C. OF (A) AN ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYMERIC FAT ACIDS AND THEALKYL ESTERS THEREOF IN WHICH THE ALKYL GROUP HAS FROM 1-8 CARBON ATOMS SAID ACID COMPOUND HAVING A DIMERIC FAT ACID CONTENT GREATER THAN ABOUT 95% BY WEIGHT WITH (B) A DIAMINE SELECTED FROM THE GROUP CONSISTING OF 1,3-CYCLOHEXANE BIS(METHYLAMINE) AND 1,4-CYCLOHEXANE BIS(METHYLAMINE), THE MOLAR EQUIVALENTS OF AMINE EMPLOYED BEING ESSENTIALLY EQUAL TO THE MOLAR EQUIVALENTS OF CARBOXYL GROUPS EMPLOYED.
Claim 2
Dependent Claim
88 words
A TOUGH, FLEXIBLE POLYAMIDE COMPOSITION CONSISTING ESSENTIALLY OF THE CONDENSATION PRODUCT AT 150-300*C. OF (A) AN ACID COMPOUND SELECTED FROM THE GROUP CONSISTING OF POLYMERIC FAT ACIDS AND THEALKYL ESTERS THEREOF IN WHICH THE ALKYL GROUP HAS FROM 1-8 CARBON ATOMS SAID ACID COMPOUND HAVING A DIMERIC FAT ACID CONTENT GREATER THAN ABOUT 95% BY WEIGHT WITH (B) A DIAMINE SELECTED FROM THE GROUP CONSISTING OF 1,3-CYCLOHEXANE BIS(METHYLAMINE) AND 1,4-CYCLOHEXANE BIS(METHYLAMINE), THE MOLAR EQUIVALENTS OF AMINE EMPLOYED BEING ESSENTIALLY EQUAL TO THE MOLAR EQUIVALENTS OF CARBOXYL GROUPS EMPLOYED.
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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |