Patent JPS5882230A successfully refreshed from Google Patents.
US4139522A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized ethylene-carbon monoxide copolymers
Assignee: Equistar Chemicals LP
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Filing: 1978-03-13
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Granted: 1979-02-13
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Expires: 1998-03-13
Abstract
Abstract Ethylene-carbon monoxide copolymer compositions are stablized against degradation by the incorporation therein of manganous salts of phosphorus oxy acids.
Inventors
- 👤 Peter R. Lantos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 08:14
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/32
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
30 words
A stabilized ethylene-carbon monoxide copolymer composition containing about 0.01 to 10% based on the weight of polymer in the base composition of a manganous salt of an oxy phosphorus acid.
Claim 2
Dependent Claim
30 words
A stabilized ethylene-carbon monoxide copolymer composition containing about 0.01 to 10% based on the weight of polymer in the base composition of a manganous salt of an oxy phosphorus acid.
Claim 3
Dependent Claim
27 words
The composition of claim 1 wherein said manganous oxy phosphorus acid salt is selected from the group consisting of manganous hypophosphite, manganous orthophosphite and mixtures of these.
Claim 4
Dependent Claim
32 words
The composition of claim 1 wherein said salt is manganous hypophosphite and it is present in an amount of about 0.05 to 5% based on the weight of polymer in the composition.
Claim 5
Dependent Claim
14 words
The composition of claim 1 containing about 0.1 to 20% of a second stabilizer.
References Cited (Backward Citations)
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Cited
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US3948832A
Cited
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Cited
US3929727A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |