US2951777A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nylon gel elimination
Assignee: —
•
Filing: —
•
Granted: 1960-09-06
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Expires: 1977-09-06
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:11
CPC Classifications
—
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
PROCESS COMPRISING ELIMINATING A GELLED POLYMER CONSISTING OF RECURRING POLYHEXAMETHYLENE ADIPAMIDE GROUPS FROM EQUIPMENT FROM PROCESSING A MOLTEN GELSUSCEPTIBLE POLYMER CONSISTING OF RECURRING POLYHEXAMETHYLENE ADIPAMIDE GROUPS AND FORMED DURING SAID PROCESSING BY ADDING TO THE EQUIPMENT AT A TEMPERATURE OF ABOUT 282*C. MORE THAN 2% BY WEIGHT OF A LIQUID CARBOXYLIC ACID FREE FROM NON-CARBOXYLIC SUBSTITUTENT GROUPS CAPABLE OF REACTING WITH CARBOXYL GROUPS AND HAVING A BOILING TEMPERATURE ABOVE 250*C. AND BEING LIQUID AT ABOUT 282*C., WHEREUPON THE GELLED POLYMER BECOMES LIQUID, SAID ACID COMPRISING ONE FROM THE GROUP CONSISTING OF ALIPHATIC DICARBOXYLIC ACIDS CONTAINING FROM ABOUT 5 TO ABOUT 10 CARBON ATOMS, ALIPHATIC MONOCARBOXYLIC ACIDS CONTAINING FROM ABOUT 9 TO ABOUT 20 CARBON ATOMS, AROMATIC NON-BASIC CARBOXYLIC ACIDS CONTAINING ONE AROMATIC GROUP AND DIBASIC CARBOXYLIX ACIDS CONTAINING ONE AROMATIC GROUP.
Claim 2
Dependent Claim
131 words
PROCESS COMPRISING ELIMINATING A GELLED POLYMER CONSISTING OF RECURRING POLYHEXAMETHYLENE ADIPAMIDE GROUPS FROM EQUIPMENT FROM PROCESSING A MOLTEN GELSUSCEPTIBLE POLYMER CONSISTING OF RECURRING POLYHEXAMETHYLENE ADIPAMIDE GROUPS AND FORMED DURING SAID PROCESSING BY ADDING TO THE EQUIPMENT AT A TEMPERATURE OF ABOUT 282*C. MORE THAN 2% BY WEIGHT OF A LIQUID CARBOXYLIC ACID FREE FROM NON-CARBOXYLIC SUBSTITUTENT GROUPS CAPABLE OF REACTING WITH CARBOXYL GROUPS AND HAVING A BOILING TEMPERATURE ABOVE 250*C. AND BEING LIQUID AT ABOUT 282*C., WHEREUPON THE GELLED POLYMER BECOMES LIQUID, SAID ACID COMPRISING ONE FROM THE GROUP CONSISTING OF ALIPHATIC DICARBOXYLIC ACIDS CONTAINING FROM ABOUT 5 TO ABOUT 10 CARBON ATOMS, ALIPHATIC MONOCARBOXYLIC ACIDS CONTAINING FROM ABOUT 9 TO ABOUT 20 CARBON ATOMS, AROMATIC NON-BASIC CARBOXYLIC ACIDS CONTAINING ONE AROMATIC GROUP AND DIBASIC CARBOXYLIX ACIDS CONTAINING ONE AROMATIC GROUP.
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) | 1963-09-06 | 1964-03-07 | 1964-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-06 | 1968-03-07 | 1968-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-06 | 1972-03-07 | 1972-09-06 | $7700.00 | Window Closed / Lapsed |