US4216137A
Expired / Lapsed
US
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Thermally stabilized polyolefin compositions
Assignee: Eastman Chemical Co
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Filing: 1978-06-05
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Granted: 1980-08-05
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Expires: 1998-06-05
Abstract
Abstract Polyolefins are rendered resistant to degradation upon exposure to heat by incorporating therein a stabilizing amount of a synergistic combination of a phenol-terpene resin, a sulfur-containing secondary antioxidant and a phosphonitrilic composition derived rom a phosphonitrilic halide and certain hydroxy compounds. The above synergistic combination is especially effective for stabilizing polyolefins containing carbon black.
Inventors
- 👤 Richard H. S. Wang
- 👤 Gether Irick, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 18:20
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08K; C08K5/00; C08K5/49; C08K5/5399; C08L23/04; C08L23/06; C08L23/10; C08L57/00; C08L57/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
117 words
A polyolefin composition containing, based on the weight of the polyolefin, about 0.1 to 10 weight percent of a phenol terpene resin, about 0.1 to 5 weight percent of a sulfur-containing secondary antioxidant and about 0.1 to 5 weight percent of a phosphonitrilic composition derived from a phosphonitrilic halide and a hydroxy compound selected from an alkanol containing 1 to 20 carbon atoms and a diol having the formula ##STR3## wherein X is a covalent bond or alkylene of 1 to about 12 carbon atoms, R 1 and R 2 are the same or different and are hydrogen or alkyl having 1 to about 6 carbon atoms and n is an integer of 1 to about 200.
Claim 2
Dependent Claim
117 words
A polyolefin composition containing, based on the weight of the polyolefin, about 0.1 to 10 weight percent of a phenol terpene resin, about 0.1 to 5 weight percent of a sulfur-containing secondary antioxidant and about 0.1 to 5 weight percent of a phosphonitrilic composition derived from a phosphonitrilic halide and a hydroxy compound selected from an alkanol containing 1 to 20 carbon atoms and a diol having the formula ##STR3## wherein X is a covalent bond or alkylene of 1 to about 12 carbon atoms, R 1 and R 2 are the same or different and are hydrogen or alkyl having 1 to about 6 carbon atoms and n is an integer of 1 to about 200.
Claim 3
Dependent Claim
64 words
A polyolefin composition according to claim 1 comprising a polymer of an α-olefin of 2 to 4 carbon atoms containing, based on the weight of the polymer, about 0.1 to 10 weight percent of a terepene phenol resin, about 0.1 to 5 weight percent of a sulfur-containing secondary antioxidant and about 0.1 to 5 weight percent of the phosphonitrilic composition defined in claim 1.
Claim 4
Dependent Claim
97 words
A polyolefin composition according to claim 1 comprising polyethylene or polypropylene containing, based on the weight of the polyethylene or polypropylene, about 0.1 to 10 weight percent of a terpene phenol resin, about 0.1 to 5 weight percent of distearyl or dilauryl thiodipropionate and about 0.1 to 5 weight percent of a triphosphonitrilic composition wherein the predominant compound is the trimer having the formula ##STR4## wherein R 3 and R 4 each is an alkyl group of up to 12 carbon atoms or each pair of R 3 and R 4 in combination represent ethylene or propylene.
Claim 5
Dependent Claim
15 words
The polyolefin composition of claim 1 which additionally contains a pigmenting amount of carbon black.
Claim 6
Dependent Claim
15 words
The polyolefin composition of claim 2 which additionally contains a pigmenting amount of carbon black.
Claim 7
Dependent Claim
27 words
The polyolefin composition of claim 3 which additionally contains, based on the weight of the polyethylene or polypropylene, about 0.1 to 10 weight percent of carbon black.
Claim 8
Dependent Claim
146 words
A polyolefin composition containing a stabilizing amount of a combination of a phenol terpene resin, sulfur-containing secondary antioxidant and a phosphonitrilic composition which is the reaction product of a phosphonitrilic halide and a hydroxy compound selected from an alkanol containing 1 to 20 carbon atoms and a diol having the formula ##STR5## wherein X is a covalent bond or alkylene of 1 to about 12 carbon atoms, R 1 and R 2 are the same or different and are hydrogen or alkyl having 1 to about 6 carbon atoms and n is an integer of 1 to about 200, wherein the combination is made up of, based on the weight of the polyolefin, about 0.1 to 10 weight percent of a terpene phenol resin, about 0.1 to 5 weight percent of distearyl or dilauryl thiodipropionate and about 0.1 to 5 weight percent of the phosphonitrilic composition.
Claim 9
Dependent Claim
146 words
A polyolefin composition containing a stabilizing amount of a combination of a phenol terpene resin, sulfur-containing secondary antioxidant and a phosphonitrilic composition which is the reaction product of a phosphonitrilic halide and a hydroxy compound selected from an alkanol containing 1 to 20 carbon atoms and a diol having the formula ##STR5## wherein X is a covalent bond or alkylene of 1 to about 12 carbon atoms, R 1 and R 2 are the same or different and are hydrogen or alkyl having 1 to about 6 carbon atoms and n is an integer of 1 to about 200, wherein the combination is made up of, based on the weight of the polyolefin, about 0.1 to 10 weight percent of a terpene phenol resin, about 0.1 to 5 weight percent of distearyl or dilauryl thiodipropionate and about 0.1 to 5 weight percent of the phosphonitrilic composition.
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) | 1983-08-05 | 1984-02-04 | 1984-08-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-08-05 | 1988-02-04 | 1988-08-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-08-05 | 1992-02-04 | 1992-08-05 | $7700.00 | Window Closed / Lapsed |