Patent US3264134A successfully refreshed from Google Patents.
US3264134A
Expired / Lapsed
US
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Polyurethane latex containing a water soluble alcohol
Assignee: WR Grace and Co
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Filing: 1964-04-13
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Granted: 1966-08-02
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Expires: 1984-04-13
Abstract
No abstract record available.
Inventors
- 👤 John J Vill
- 👤 Stuart P Suskind
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:54
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/10; C08G18/0804; C08G18/0809; C08G18/0814; C08K; C08K5/00; C08K5/04; C08K5/05; C08K5/053; Y; Y10; Y10S; Y10S264/00; Y10S264/13
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
49 words
A POLYURETHANE LATEX COMPOSITION COMPRISING: (1) A POLYURETHANE POLYMER CHARACTERIZED BY CONTAINING AT LEAST 0.1% BY WEIGHT OF TERTIARY AMINO NITROGEN, SAID TERTIARY AMINO NITROGEN BEING SUBSTANTIALLY NEUTRALIZED WITH AN ACID, AND, (2) FROM ABOUT 1 TO ABOUT 20 PARTS BY WEIGHT OF A POLYHYDROXY COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
49 words
A POLYURETHANE LATEX COMPOSITION COMPRISING: (1) A POLYURETHANE POLYMER CHARACTERIZED BY CONTAINING AT LEAST 0.1% BY WEIGHT OF TERTIARY AMINO NITROGEN, SAID TERTIARY AMINO NITROGEN BEING SUBSTANTIALLY NEUTRALIZED WITH AN ACID, AND, (2) FROM ABOUT 1 TO ABOUT 20 PARTS BY WEIGHT OF A POLYHYDROXY COMPOUND HAVING THE FORMULA
Claim 3
Dependent Claim
55 words
A METHOD FOR PREPARING A MOISTURE PERMEABLE POLYURETHANE COATED FLEXIBLE SHEET MATERIAL, WHICH COMPRISES COATING A FLEXIBLE SUBSTRATE WITH A COMPOSITION OF CLAIM 1, DRYING SAID COATING TO OBTAIN CONTINUOUS SUBSTANTIALLY SOLID POLYMERIC FILM ON SAID SUBSTRATE, AND EXTRACTING SAID FILM WITH WATER TO REMOVE THE POLYHYDRIC ALCOHOL THEREFROM AND FORM A MOISTURE PERMEABLE FILM.
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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |