Patent US2961347A successfully refreshed from Google Patents.
US2961347A
Expired / Lapsed
US
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Process for preventing shrinkage and felting of wool
Assignee: Hercules Powder Co
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Filing: 1957-11-13
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Granted: 1960-11-22
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Expires: 1977-11-13
Abstract
No abstract record available.
Inventors
- 👤 John D Floyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:39
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/59; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2385
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A PROCESS OF TREATING WOOL FABRICS TO PREVENT SHRINKAGE THEREOF DURING WASHING WHICH COMPRISES TREATING THE FABRIC WITH FROM ABOUT 0.5% TO ABOUT 10% BY WEIGHT, BASED ON THE WEIGHT OF THE FABRIC OF A CATIONIC WATERSOLUBLE THERMOSETTING RESIN OBTAINED BY REACTING A POLYALKYLENE POLYAMINE HAVING TWO PRIMARY AMINE GROUPS AND AT LEAST ONE SECONDARY AMINE GROUP WITH A C3-C10 SATURATED ALIPHATIC DICARBOXYLIC ACID IN A MOLE RATIO OF FROM ABOUT 0.8 TO ABOUT 1.4 OF THE FORMER TO ABOUT 1.0 OF THE LATTER TO FORM A LONG CHAIN POLYAMIDE HAVING SECONDARY AMINE GROUPS, AND THEN REACTING THE POLYAMIDE WITH EPICHLOROHYDRIN IN A MOLE RATIO OF EPICHLOROHYDRIN TO SECONDARY AMINE GROUPS OF SAID POLYAMIDE OF FROM ABOUT 0.5:1 TO ABOUT 1.8:1, AND THEREAFTER HEATING THE TREATED FABRIC AT A TEMPERATURE FROM ABOUT 40*C. TO ABOUT 150*C. TO CURE THE RESIN.
Claim 2
Dependent Claim
140 words
A PROCESS OF TREATING WOOL FABRICS TO PREVENT SHRINKAGE THEREOF DURING WASHING WHICH COMPRISES TREATING THE FABRIC WITH FROM ABOUT 0.5% TO ABOUT 10% BY WEIGHT, BASED ON THE WEIGHT OF THE FABRIC OF A CATIONIC WATERSOLUBLE THERMOSETTING RESIN OBTAINED BY REACTING A POLYALKYLENE POLYAMINE HAVING TWO PRIMARY AMINE GROUPS AND AT LEAST ONE SECONDARY AMINE GROUP WITH A C3-C10 SATURATED ALIPHATIC DICARBOXYLIC ACID IN A MOLE RATIO OF FROM ABOUT 0.8 TO ABOUT 1.4 OF THE FORMER TO ABOUT 1.0 OF THE LATTER TO FORM A LONG CHAIN POLYAMIDE HAVING SECONDARY AMINE GROUPS, AND THEN REACTING THE POLYAMIDE WITH EPICHLOROHYDRIN IN A MOLE RATIO OF EPICHLOROHYDRIN TO SECONDARY AMINE GROUPS OF SAID POLYAMIDE OF FROM ABOUT 0.5:1 TO ABOUT 1.8:1, AND THEREAFTER HEATING THE TREATED FABRIC AT A TEMPERATURE FROM ABOUT 40*C. TO ABOUT 150*C. TO CURE THE RESIN.
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) | 1963-11-22 | 1964-05-23 | 1964-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-22 | 1968-05-23 | 1968-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-22 | 1972-05-23 | 1972-11-22 | $7700.00 | Window Closed / Lapsed |