US3671305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating shaped articles with betaine-type polymers and the articles thereby obtained
Assignee: Rohm and Haas Co
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Filing: 1970-01-30
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Granted: 1972-06-20
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Expires: 1990-01-30
Abstract
Abstract SHAPED ARTICLES, MORE PARTICULARLY FABRICS OF VARIOUS FIBERS, ESPECIALLY COTTON AND/OR HYDROPHOBIC SYNTHETIC FIBERS, E.G., OF LINEAR POLYESTERS (SUCH AS OF POLYETHYLENEGYLCOL TEREPHTHALATE) ARE TREATED WITH POLYMERS OF BETAINES OR SULFOBETAINES OR COPOLYMERS THEREOF WITH OR WITHOUT ACRYLIC ACID AND/OR AN ACRYLIC ESTER, SUCH AS METHYL ACRYLATE-PREFERABLY THE TREATING COMPOSITION ALSO CONTAINS AN AMINOPLST CONDENSATE CAPABLE OF IMPARTING CREASEPROOFING, WINKELPROOFING, AND DURABLE PRESS CHARACTERISTICS ON CURING WITH AN ACIDIC CATALYST. THE PROCESS AND TREATED FABRICS ARE CLAIMED.
Inventors
- 👤 Albert B Brown
- 👤 Frank J Parkhill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:36
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/21; D06M15/263; D06M15/267; D06M15/285; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2279; Y10T442/2418; Y10T442/2459
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |