US3876598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photodegradable polyvinyl chloride compositions containing a ferrocene prodegradant
Assignee: European Vinyls Corp Technology AG
•
Filing: 1973-05-07
•
Granted: 1975-04-08
•
Expires: 1993-05-07
Abstract
Abstract Polyvinyl chloride compositions contain ferrocene or a derivative as a prodegradant.
Inventors
- 👤 Derek Samuel Brackman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:21
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/56; Y; Y10; Y10S; Y10S260/00; Y10S260/43
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
64 words
POLYVINYL CHLORIDE COMPOSITIONS WHICH CONTAIN 0.01 TO 1% BY WEIGHT, BASED ON THE TOTAL COMPOSITION, OF A PRODEGRADANT, SAID PRODEGRADANT BEING SELECTED FROM THE GROUP CONSISTING OF FERROCENE, FERROCENE SUBSTITUTED WITH AT LEAST ONE ALKYL GROUP CONTAINING 1 TO 18 CARBON ATOMS AND KETOFERROCENE HAVING AT LEAST ONE ALKYL GROUP WITH 1 TO 11 CARBON ATOMS JOINED TO THE FERROCENE NUCLEUS VIA A CO-GROUP.
Claim 2
Dependent Claim
64 words
POLYVINYL CHLORIDE COMPOSITIONS WHICH CONTAIN 0.01 TO 1% BY WEIGHT, BASED ON THE TOTAL COMPOSITION, OF A PRODEGRADANT, SAID PRODEGRADANT BEING SELECTED FROM THE GROUP CONSISTING OF FERROCENE, FERROCENE SUBSTITUTED WITH AT LEAST ONE ALKYL GROUP CONTAINING 1 TO 18 CARBON ATOMS AND KETOFERROCENE HAVING AT LEAST ONE ALKYL GROUP WITH 1 TO 11 CARBON ATOMS JOINED TO THE FERROCENE NUCLEUS VIA A CO-GROUP.
Claim 3
Dependent Claim
18 words
Polyvinyl chloride compositions which contain 0.05 to 0.5% by weight based on the total composition of the prodegradant.
Claim 4
Dependent Claim
18 words
Polyvinyl chloride compositions which contain 0.05 to 0.5% by weight based on the total composition of the prodegradant.
Claim 5
Dependent Claim
12 words
A container made of a polyvinyl chloride composition according to claim 1.
Claim 6
Dependent Claim
12 words
Wrapping material made of a polyvinyl chloride composition according to claim 1.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |