US3867477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-component synergistic antioxidant system for polyolefins
Assignee: Motors Liquidation Co
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Filing: 1974-01-23
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Granted: 1975-02-18
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Expires: 1994-01-23
Abstract
Abstract An epoxide resin of the bisphenol-A type having the general formula- WHERE N IS FROM 0 TO 18 AND LITHARGE (PbO) when mixed together cooperate synergistically to provide a very effective antioxidant for some polyolefins and chlorinated polyolefin resins. D R A W I N G
Inventors
- 👤 Ismat A Abu-Isa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:24
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/10; C08L23/26; C08L23/28; C08L23/286
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
56 words
AN OXIDATION RESISTANT POLYOLEFIN COMPOSITION COMPRISING A POLYOLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND CHLORINATED POLYETHYLENE, AND TWO TO FIFTEEN PERCENT BY WEIGHT BASED ON SAID POLYOLEFIN COMPOSITION OF AN ANTIOXIDANT, SAID ANTIOXIDANT CONSISTING ESSENTIALY OF, BY WEIGHT, FROM ABOUT 35 PERCENT TO ABOUT 50 PERCENT OF AN EPOXIDE HAVING THE GENERAL FORMULA-
Claim 2
Dependent Claim
56 words
AN OXIDATION RESISTANT POLYOLEFIN COMPOSITION COMPRISING A POLYOLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYETHYLENE, POLYPROPYLENE AND CHLORINATED POLYETHYLENE, AND TWO TO FIFTEEN PERCENT BY WEIGHT BASED ON SAID POLYOLEFIN COMPOSITION OF AN ANTIOXIDANT, SAID ANTIOXIDANT CONSISTING ESSENTIALY OF, BY WEIGHT, FROM ABOUT 35 PERCENT TO ABOUT 50 PERCENT OF AN EPOXIDE HAVING THE GENERAL FORMULA-
Claim 3
Dependent Claim
55 words
An oxidation resistant polyolefin composition comprising a polyolefin selected from the group consisting of polyethylene, polypropylene and chlorinated polyethylene, and two to fifteen percent by weight based on said polyolefin composition of an antioxidant, said antioxidant consisting essentially of, by weight, from about 35 percent to 50 percent of an epoxide having the general formula-
Claim 4
Dependent Claim
55 words
An oxidation resistant polyolefin composition comprising a polyolefin selected from the group consisting of polyethylene, polypropylene and chlorinated polyethylene, and two to fifteen percent by weight based on said polyolefin composition of an antioxidant, said antioxidant consisting essentially of, by weight, from about 35 percent to 50 percent of an epoxide having the general formula-
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) | 1978-02-17 | 1978-08-19 | 1979-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-17 | 1982-08-19 | 1983-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-17 | 1986-08-19 | 1987-02-18 | $7700.00 | Window Closed / Lapsed |