Patent US3192296A successfully refreshed from Google Patents.
US3192296A
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Method of making elastic polyurethane filamentary material using tertiary nitrogen-containing catalyst
Assignee: Uniroyal Inc
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Filing: 1963-03-21
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Granted: 1965-06-29
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 Charles V Tallman
- 👤 Gus D Keritsis
- 👤 Robert A Gregg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:59
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/10; D; D01; D01F; D01F6/00; D01F6/58; D01F6/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
IN A METHOD OF MAKING A FILAMENTARY MATERIAL COMPRISING THE STEPS OF PROVIDING A LIQUID POLYURETHANE PREPOLYMER HAVING TERMINAL ISOCYANATE GROUPS, EXTRUDING A FINE STREAM OF SAID LIQUID PREPOLYMER INTO AN AQUEOUS ALIPHATIC DIPRIMARY DIAMINE SETTING BATH TO EFFECT AN INITIAL SETTING OF THE EXTRUDED MATERIAL IN THE FORM OF A THREAD, AND THEREAFTER CURING THE THREAD BY THE ACTION OF WATER, THE IMPROVEMENT COMPRISING SENSITIZING SAID THREAD, SUBSEQUENT TO SAID INITIAL SETTING BUT PRIOR TO SAID WATER CURE, BY CONTACTING THE THREAD WITH A CATALYST MATERIAL THAT IS SOLUBLE IN WATER AND SOLUBLE IN THE SAID PREPOLYMER, AND WASHING THE CATALYST OUT OF THE THREAD PRIOR TO COMPLETION OF SAID CURE, THE SAID CATALYTIC MATERIAL COMPRISING AN
Claim 2
Dependent Claim
118 words
IN A METHOD OF MAKING A FILAMENTARY MATERIAL COMPRISING THE STEPS OF PROVIDING A LIQUID POLYURETHANE PREPOLYMER HAVING TERMINAL ISOCYANATE GROUPS, EXTRUDING A FINE STREAM OF SAID LIQUID PREPOLYMER INTO AN AQUEOUS ALIPHATIC DIPRIMARY DIAMINE SETTING BATH TO EFFECT AN INITIAL SETTING OF THE EXTRUDED MATERIAL IN THE FORM OF A THREAD, AND THEREAFTER CURING THE THREAD BY THE ACTION OF WATER, THE IMPROVEMENT COMPRISING SENSITIZING SAID THREAD, SUBSEQUENT TO SAID INITIAL SETTING BUT PRIOR TO SAID WATER CURE, BY CONTACTING THE THREAD WITH A CATALYST MATERIAL THAT IS SOLUBLE IN WATER AND SOLUBLE IN THE SAID PREPOLYMER, AND WASHING THE CATALYST OUT OF THE THREAD PRIOR TO COMPLETION OF SAID CURE, THE SAID CATALYTIC MATERIAL COMPRISING AN
References Cited (Backward Citations)
US3047356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-28 | 1968-12-28 | 1969-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-28 | 1972-12-28 | 1973-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-28 | 1976-12-28 | 1977-06-29 | $7700.00 | Window Closed / Lapsed |