US4080361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic combination of alkoxy-substituted phosphonitrilic compounds and ortho-hindered phenolic antioxidants
Assignee: Eastman Chemical Co
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Filing: 1976-11-15
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Granted: 1978-03-21
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Expires: 1996-11-15
Abstract
Abstract A stabilizer combination for use in improving the resistance of olefin polymers to deterioration and physical properties on exposure to heat comprising A) an organic phosphonitrilic composition derived from a triphosphonitrilic halide and an hydroxy compound selected from alcohols containing one to about 20 carbon atoms and diols having the formula ##STR1## wherein X is a covalent bound or alkylene of 1 to about 12 carbon atoms, R 1 and R 2 are the same or different as hydrogen or alkyl having 1 to about 6 carbon atoms, and n is an integer from 1 to about 200; and B) from about 0.1 to about 25 parts by weight of an ortho-hindered phenolic primary antioxidant.
Inventors
- 👤 Richard H. S. Wang
- 👤 Gether Irick, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:38
CPC Classifications
C; C08; C08K; C08K5/00; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4056; C07F9/547; C07F9/6564; C07F9/6581; C07F9/65812; C07F9/65815; C08G; C08G79/00; C08G79/02; C08G79/025; C08K5/04; C08K5/13; C08K5/16; C08K5/34; C08K5/36; C08K5/37; C08L; C08L101/00; C08L23/00; C08L23/02; C08L85/00; C08L85/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
A stabilizer combination for use in improving the resistance of olefin polymers to deterioration in physical properties on exposure to heat comprising A) from about 0.1 to about 25 parts by weight of an organic phosphonitrilic composition derived from a triphosphonitrilic halide and a hydroxy compound selected from unsubstituted saturated alcohols containing 1 to about 20 carbon atoms, and diols having the formula ##STR6## 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 as hydrogen or alkyl having 1 to about 6 carbon atoms, and n is an integer from 1 to about 200; and B) from about 0.1 to about 25 parts by weight of an ortho-hindered phenolic primary antioxidant.
Claim 2
Dependent Claim
127 words
A stabilizer combination for use in improving the resistance of olefin polymers to deterioration in physical properties on exposure to heat comprising A) from about 0.1 to about 25 parts by weight of an organic phosphonitrilic composition derived from a triphosphonitrilic halide and a hydroxy compound selected from unsubstituted saturated alcohols containing 1 to about 20 carbon atoms, and diols having the formula ##STR6## 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 as hydrogen or alkyl having 1 to about 6 carbon atoms, and n is an integer from 1 to about 200; and B) from about 0.1 to about 25 parts by weight of an ortho-hindered phenolic primary antioxidant.
Claim 3
Dependent Claim
32 words
A stabilizer combination of claim 1, wherein the phosphonitrilic compound utilized is triphosphonitrilic chloride and the alcohols utilized are selected from the group consisting of ethylene glycol, polyethylene glycol and alkyl alcohols.
Claim 4
Dependent Claim
26 words
A stabilizer combination of claim 2 wherein the ortho-hindered phenol and primary antioxidant is selected from tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl]methane, distearyl pentaerythritol diphosphite, tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionyloxymethyl]methane and 2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)mesitylene, bis(2-methyl-5-t-butyl-4-hydroxyphenyl)sulfide.
Claim 5
Dependent Claim
14 words
A heat resistant stabilized polyolefin polymer containing the combination of stabilizers of claim 1.
Claim 6
Dependent Claim
14 words
A heat resistant stabilized polyolefin polymer containing the combination of stabilizers of claim 2.
Claim 7
Dependent Claim
14 words
A heat resistant stabilized polyolefin polymer containing the combination of stabilizers of claim 3.
Claim 8
Dependent Claim
18 words
A composition of claims 4, 5 and 6 in which the polyolefin is selected from polyethylene and polypropylene.
References Cited (Backward Citations)
US3840621A
Cited
US3920616A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |