Patent US3745072A successfully refreshed from Google Patents.
Patent US3825627A successfully refreshed from Google Patents.
US3825627A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ethylene polymer composition having enhanced photodegradability
Assignee: Dow Chemical Co
•
Filing: 1972-05-30
•
Granted: 1974-07-23
•
Expires: 1992-05-30
Abstract
Abstract PHOTODEGRADIBILITY OF ETHYLENE POLYMER, CONTAINING A PHOTOSENSITIZING MATERIAL SUCH AS TRIS(N,N-D-N-BUTYLDITHIOCARBAMATO)IRON (III) IS ENHANCED BY INCORPORATING THEREIN IN MINOR AMOUNT OF POLYPROPYLENE. THE RESULTANT PHOTODEGRDBLE BLENDS ARE USEFUL AS MOLDING OR EXTRU: SION COMPOSITIONS FOR THE PRODUCTION OF DISPOSABLE PLASTIC ARTICLES, E.G. WRAPPINGS, CONTAINERS, ETC., WHICH DEGRADE RAPIDLY WHEN EXPOSED TO SUNLIGHT AND OTHER ULTRAVOILET LIGHT SOURCES.
Inventors
- 👤 Gaugh M Mc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0033; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08K5/04; C08K5/07; C08L23/10; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |