Patent US3301816A successfully refreshed from Google Patents.
US3301816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solid olefine polymer compositions stabilized with a benzophenone and a sulfur compound
Assignee: Imperial Chemical Industries Ltd
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Filing: 1962-05-21
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Granted: 1967-01-31
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Burgess Robin Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:49
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08K5/132; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
59 words
A STABILIZER COMPOSITION COMPRISING (A) AS A LIGHT STABILIZER, 2-HYDROXY-4-HEPTYLOXY BENZOPHENONE AND (B) A MERCAPTOL HAVING A MOLECULAR WEIGHT OF AT LEAST 250 WHICH IS THE CONDENSATE OF HEXAMETHYLENE DITHIOL AND 2-NONANONE THERE BEING FROM 0.1 TO 10 ORTHOPHENOLIC NUCLEI PROVIDED TO THE COMPOSITION BY SAID LIGHT STABILIZER TO EACH SULFUR ATOM PROVIDED TO THE COMPOSITION BY EACH MERCAPTOL.
Claim 2
Dependent Claim
59 words
A STABILIZER COMPOSITION COMPRISING (A) AS A LIGHT STABILIZER, 2-HYDROXY-4-HEPTYLOXY BENZOPHENONE AND (B) A MERCAPTOL HAVING A MOLECULAR WEIGHT OF AT LEAST 250 WHICH IS THE CONDENSATE OF HEXAMETHYLENE DITHIOL AND 2-NONANONE THERE BEING FROM 0.1 TO 10 ORTHOPHENOLIC NUCLEI PROVIDED TO THE COMPOSITION BY SAID LIGHT STABILIZER TO EACH SULFUR ATOM PROVIDED TO THE COMPOSITION BY EACH MERCAPTOL.
Claim 3
Dependent Claim
34 words
A POLYMERIC COMPOSITION COMPRISING A SOLID ALPHAMONO OLEFIN COMPOSITION AND A COMPOSITION AS SET FORTH IN CLAIM 1, THE AMOUNT OF SAID STABILIZER BEING FROM 0.1 TO 5% BY WEIGHT OF THE POLYMER COMPOSITION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |