US2933366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shrinkproofing textiles with polyepoxides, polyamides, and ammonia
Assignee: Individual
•
Filing: 1958-05-12
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Granted: 1960-04-19
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Expires: 1978-05-12
Abstract
No abstract record available.
Inventors
- 👤 Thompson J Coe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:44
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/55
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
134 words
THE METHOD OF SHRINKPROOFING WOOL WITHOUT SIGNIFICANT IMPAIRMENT OF ITS HAND WHICH COMPRISES IMPREGNATING WOOL WITH (A) A POLYEXPOXIDE CONTAINING AT LEAST TWO EPOXY GROUPS PER MOLECULE AND BEING FREE FROM FUNCTIONAL GROUPS OTHER THAN HYDROXYL GROUPS, ETHER GROUPS, AND EPOXY GROUPS AND (B) A POLYAMIDE OF A LOWER ALIPHATIC POLYAMINE AND A POLYMERIC FAT ACID CONTAINING AT LEAST TWO CARBOXYL GROUPS, SAID POLYAMINE HAVING FREE AMINE GROUPS, THE TOTAL AMOUNT OF POLYEPOXIDE AND POLYAMIDE DEPOSITED ON THE WOOL BEING ABOUT FROM 0.5 TO 10% OF THE WEIGHT OF THE WOOL, THE PROPORTION OF POLYAMIDE BEING ABOUT FROM 0.1 TO 5 PARTS BY WEIGHT PER PART BY WEIGHT OF POLYEPOXIDE, AND EXPOSING THE IM PREGNATED WOOL TO AMMONIA IN THE VAPOR PHASE TO CURE AND INSOLUBILIZE THE POLYEPOXIDE AND POLYAMIDE ON THE WOOL FIBERS.
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) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |