US4024103A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyolefin molding composition
Assignee: Hoechst AG
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Filing: 1975-09-02
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Granted: 1977-05-17
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Expires: 1995-09-02
Abstract
Abstract A polyolefin molding composition having an excellent stability to light, to heat and of its color shade is obtained by adding to the polyolefin from 0.01 to 2 weight %, calculated on the polyolefin, of a compound of diphosphonic acid or diphosphinic acid.
Inventors
- 👤 Rudolf Heinrich
- 👤 Hans-Jerg Kleiner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:14
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/49; C08K5/51; C08K5/53; C08K5/5313; C08K5/5317; C08K5/5333
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
71 words
A molding composition of a polyolefin and from 0.01 to 2 weight %, based on the weight of polyolefin, of a compound of the formula ##STR8## in which R is alkylene of 1 to 18 carbon atoms or arylene, R 3 is alkyl of 1 to 18 carbon atoms, aryl or alkylaryl of 6 to 18 carbon atoms, or OH, and R 3 may also be substituted by halogen or OH.
Claim 2
Dependent Claim
71 words
A molding composition of a polyolefin and from 0.01 to 2 weight %, based on the weight of polyolefin, of a compound of the formula ##STR8## in which R is alkylene of 1 to 18 carbon atoms or arylene, R 3 is alkyl of 1 to 18 carbon atoms, aryl or alkylaryl of 6 to 18 carbon atoms, or OH, and R 3 may also be substituted by halogen or OH.
Claim 3
Dependent Claim
37 words
A molding composition as defined in claim 1 in which R is an alkylene of from 1 to 10 carbon atoms or phenylene and R 3 is alkyl of 1 to 6 carbon atoms, phenyl or hydroxy.
Claim 4
Dependent Claim
20 words
A molding composition according to claim 1 wherein R is --CH 2 CH 2 -- and R 3 is methyl.
Claim 5
Dependent Claim
20 words
A molding composition according to claim 1 wherein R is --CH 2 CH 2 -- and R 3 is OH.
Claim 6
Dependent Claim
28 words
Molding composition of a polyolefin according to claim 1, which contains additionally from 0.01 to 5 weight %, calculated on the polyolefin, of a known phenolic anti-oxidant stabilizer.
References Cited (Backward Citations)
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Cited
US2635112A
Cited
US3471552A
Cited
US3493538A
Cited
US3749694A
Cited
US3954847A
Cited
US3894986A
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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) | 1980-05-16 | 1980-11-15 | 1981-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-16 | 1984-11-15 | 1985-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-16 | 1988-11-15 | 1989-05-17 | $7700.00 | Window Closed / Lapsed |