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US3968082A
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Stabilized ethylene-carbon monoxide copolymers
Assignee: Millennium Petrochemicals Inc
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Filing: 1974-09-09
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Granted: 1976-07-06
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Expires: 1994-09-09
Abstract
Abstract Ethylene-carbon monoxide copolymer compositions are stabilized against thermal degradation by the incorporation therein of an organic polythiol compound.
Inventors
- 👤 Donald E. Hudgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:41
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
43 words
A stabilized ethylene-carbon monoxide copolymer composition containing about 0.1 to 20% based on the weight of polymer in the base composition of a stabilizer compound having the structural formula ##EQU3## wherein R' and R" are hydrocarbon radicals and n is at least 2.
Claim 2
Dependent Claim
43 words
A stabilized ethylene-carbon monoxide copolymer composition containing about 0.1 to 20% based on the weight of polymer in the base composition of a stabilizer compound having the structural formula ##EQU3## wherein R' and R" are hydrocarbon radicals and n is at least 2.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein said stabilizer compound is present in an amount of about 6 to 10% based on the weight of polymer in the composition.
Claim 4
Dependent Claim
16 words
The composition of claim 1 wherein R' and R" each contain up to 10 carbon atoms.
Claim 5
Dependent Claim
36 words
The composition of claim 1 wherein R' is a saturated hydrocarbon radical containing 2 to 10 carbon atoms, R" is a saturated hydrocarbon radical containing up to 10 carbon atoms and n is 2 to 6.
Claim 6
Dependent Claim
21 words
The composition of claim 4 wherein R" is an alkylene group and R' and R" contain up to 4 carbon atoms.
Claim 7
Dependent Claim
17 words
A stabilized ethylene-carbon monoxide copolymer composition containing about 1 to 10% of trimethylol propane-tri(thiolacetate) or pentaerythritol tetramercaptan.
Claim 8
Dependent Claim
17 words
A stabilized ethylene-carbon monoxide copolymer composition containing about 1 to 10% of trimethylol propane-tri(thiolacetate) or pentaerythritol tetramercaptan.
Claim 9
Dependent Claim
62 words
A stabilized ethylene-carbon monoxide copolymer composition containing about 0.1 to 20% based on the weight of polymer in the base composition of a stabilizer compound having the structural formula R(SH).sub.n wherein R is a hydrocarbon radical containing up to 30 carbon atoms and is free of substituents which adversely affect the properties of the copolymer composition and n is at least 2.
Claim 10
Dependent Claim
62 words
A stabilized ethylene-carbon monoxide copolymer composition containing about 0.1 to 20% based on the weight of polymer in the base composition of a stabilizer compound having the structural formula R(SH).sub.n wherein R is a hydrocarbon radical containing up to 30 carbon atoms and is free of substituents which adversely affect the properties of the copolymer composition and n is at least 2.
Claim 11
Dependent Claim
28 words
The composition of claim 7 wherein said stabilizer compound is present in an amount of about 1 to 10% based on the weight of polymer in the composition.
Claim 12
Dependent Claim
13 words
The composition of claim 7 wherein R contains up to 18 carbon atoms.
Claim 13
Dependent Claim
24 words
The composition of claim 7 wherein R is a saturated hydrocarbon radical containing 2 to 10 carbon atoms and n is 2 to 6.
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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) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |