Patent US3240759A successfully refreshed from Google Patents.
US3240759A
Expired / Lapsed
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High shrinkage synthetic linear polycarbonamides
Assignee: Monsanto Co
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Filing: 1962-05-14
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Granted: 1966-03-15
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Expires: 1982-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jr Lawrence W Crovatt
- 👤 William A H Huffman
- 👤 James S Tapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:06
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26; C08G69/265
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
167 words
A FIBER-FORMING SYNTHETIC LINEAR POLYCARBONAMIDE HAVING A BOILING WATER SHRINKAGE OF AT LEAST 15 PERCENT WHEN IN FIBER FORM AND HAVING RECURRING AMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN POLYMER CHAIN, AND WHERIN SAID GROUPS ARE SEPARATED BY AT LEAST 2 CARBON ATOMS, CONSISTING ESSENTIALLY OF THE PRODUCT OBTAINED FROM REACTANTS CONSISTING ESSENTIALLY OF (A) A POLYAMIDE-FORMING COMPOSITION CONSISTING OF SUBSTANTIALLY EQUIMOLECULAR WEIGHTS OF AN ALIPHATIC SATURATED DICARBOXYLIC ACID OF THE FORMULA HOOCRCOOH WHEREIN R IS A DIVALENT HYDROCARBON RADICAL HAVING A CHAIN LENGTH OF AT LEAST 2 CARBON ATOMS AND AN ALIPHATIC DIAMINE OF THE FORMULA NH2NCH2)NNH2 WHEREIN N IS AN INTEGER OF AT LEAST 2, AND (B) FROM ABOUT 0.50 TO 50.0 MOLE PERCENT BASED ON SAID SATURATED DICARBOXYLIC ACID OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC MONO-UNSATURATED DICARBOXYLIC ACIDS HAVING FROM 6 TO 10 CARBON ATOMS AND DIAMINE SALTS OF SAID MONO-UNSATURATED DICABOXYLIC ACIDS AND IAMINES OF THE FORMULA NH2(CH2)NNH2 WHERIN N IS AN INTEGER OF AT LEAST 2.
Claim 2
Dependent Claim
167 words
A FIBER-FORMING SYNTHETIC LINEAR POLYCARBONAMIDE HAVING A BOILING WATER SHRINKAGE OF AT LEAST 15 PERCENT WHEN IN FIBER FORM AND HAVING RECURRING AMIDE GROUPS AS AN INTEGRAL PART OF THE MAIN POLYMER CHAIN, AND WHERIN SAID GROUPS ARE SEPARATED BY AT LEAST 2 CARBON ATOMS, CONSISTING ESSENTIALLY OF THE PRODUCT OBTAINED FROM REACTANTS CONSISTING ESSENTIALLY OF (A) A POLYAMIDE-FORMING COMPOSITION CONSISTING OF SUBSTANTIALLY EQUIMOLECULAR WEIGHTS OF AN ALIPHATIC SATURATED DICARBOXYLIC ACID OF THE FORMULA HOOCRCOOH WHEREIN R IS A DIVALENT HYDROCARBON RADICAL HAVING A CHAIN LENGTH OF AT LEAST 2 CARBON ATOMS AND AN ALIPHATIC DIAMINE OF THE FORMULA NH2NCH2)NNH2 WHEREIN N IS AN INTEGER OF AT LEAST 2, AND (B) FROM ABOUT 0.50 TO 50.0 MOLE PERCENT BASED ON SAID SATURATED DICARBOXYLIC ACID OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC MONO-UNSATURATED DICARBOXYLIC ACIDS HAVING FROM 6 TO 10 CARBON ATOMS AND DIAMINE SALTS OF SAID MONO-UNSATURATED DICABOXYLIC ACIDS AND IAMINES OF THE FORMULA NH2(CH2)NNH2 WHERIN N IS AN INTEGER OF AT LEAST 2.
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) | 1969-03-14 | 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 |