Patent US3636136A successfully refreshed from Google Patents.
US3636136A
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Method of powdering polyamides with hydrolyzed ethylene/vinyl acetate copolymers
Assignee: EIDP Inc
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Filing: 1969-11-18
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Granted: 1972-01-18
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Expires: 1989-11-18
Abstract
Abstract POLYAMIDES HAVING MELT INDICES IN THE RANGE OF 0.01 TO 2000 ARE POWDERED BY GRINDING IN STANDARD GRINDING EQUIPMENT USING AS GRINDING AID ABOUT 1 TO 100 PERCENT BY WEIGHT, BASED ON THE POLYAMIDE, OF ABOUT 50-100 PERCENT ALCOHOLYZED ETHYLENE/VINYL ESTER COPOLYMER WHICH, BEFORE BEING ALCOHOLYZED, CONTAINED ABOUT 70 TO 98 MOLE PERCENT ETHYLENE AND ABOUT 2 TO 30 MOLE PERCENT VINYL ESTER. THE RESULTING COMPOSITIONS ARE USEFUL FOR PREPARING NYLON COLOR CONCENTRATES AND, WHEN THE POLYAMIDE IS RELATIVELY LOW MELTING, THEY ARE PARTICULARLY USEFUL AS TEXTILE FUSIBLE ADHESIVES.
Inventors
- 👤 Alvin E Konopik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:07
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/12; C08L; C08L77/00; C08L77/02; C08L77/06; C09; C09D; C09D177/00; C09D177/02; C09D177/06; D; D06; D06M; D06M17/00; D06M17/04; C08J2377/00
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |