US3712828A
Expired / Lapsed
US
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Application of adhesive coating to isotactic polypropylene and composition therefor
Assignee: Naphtachimie SA
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Filing: 1970-06-25
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Granted: 1973-01-23
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Expires: 1990-06-25
Abstract
Abstract THIS INVENTION IS ADDRESSED TO THE APPLICATION OF AN ORGANIC ADHENSIVE COATING TO PLASTIC COMPOSITION CONTAINING ISOTACTIC POLYPROPYLENE WHEREIN ARTICLES FORMED OF A POLYMERIC COMPOSITION SELECTED FROM THE GROUP CONSISTING OF A MIXTURE OF FROM 75% TO 97% BY WEIGHT ISOTACTIC POLYPROPYLENE AND 3-25% OF AN OLEFIN COPOLYMER HAVING LOW CRYSTALLINITY AND A GRAFT COPOLYMER FORMED OF FROM 75% TO 97% BY WEIGHT ISOTACTIC POLYPROPYLENE ONTO WHICH IS GRAFTED 3-25% BY WEIGHT OF A COPOLYMER OF ETHYLENE AND PROPYLENE CONTAINING MORE THAN 10% BY WEIGHT ETHYLENE ARE COATED WITH AN ADHENSIVE MATERIAL SUCH AS ORGANIC PAINTS OR ADHENSIVES.
Inventors
- 👤 J Bernard
- 👤 P Pascal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:11
CPC Classifications
C; C08; C08L; C08L51/00; C08L51/06; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/20; C08L23/00; C08L23/02; C08L23/10; C08L23/12; C08L53/00; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C08L23/14; C08L23/18; C08L23/20; C08L23/22; C08L2314/00; C08L2314/02
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |