US4206111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized polyolefins
Assignee: Borg Warner Corp
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Filing: 1978-08-10
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Granted: 1980-06-03
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Expires: 1998-08-10
Abstract
Abstract An ultraviolet stabilizer for olefin polymers. It is a combination of a 2-hydroxyphenylbenzotriazole, a dialkyl pentaerythritol diphosphite and a phenolic ester oxidation inhibitor.
Inventors
- 👤 Leo L. Valdiserri
- 👤 Elyse M. Bullock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:52
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; C08K5/04; C08K5/13; C08K5/134; C08K5/1345; C08K5/49; C08K5/51; C08K5/52; C08K5/524
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
103 words
A polymer composition stabilized against deterioration in the presence of ultraviolet radiation comprising an olefin polymer and stabilizing amounts of (1) a 2-hydroxyphenylbenzotriazole having the structural formula ##STR6## where R 1 is lower alkyl or halogen, R 2 is lower alkyl, halogen or hydrogen, and X is chlorine or hydrogen, (2) a dialkyl penetaerythritol diphosphite wherein the alkyl groups each contain 8-20 carbon atoms, and (3) a phenolic ester oxidation inhibitor having the structural formula ##STR7## where R and R' are lower alkyl, R" is lower alkyl or hydrogen, n is 1-4, and A is the residue of an alkanol or alkane polyol.
Claim 2
Dependent Claim
103 words
A polymer composition stabilized against deterioration in the presence of ultraviolet radiation comprising an olefin polymer and stabilizing amounts of (1) a 2-hydroxyphenylbenzotriazole having the structural formula ##STR6## where R 1 is lower alkyl or halogen, R 2 is lower alkyl, halogen or hydrogen, and X is chlorine or hydrogen, (2) a dialkyl penetaerythritol diphosphite wherein the alkyl groups each contain 8-20 carbon atoms, and (3) a phenolic ester oxidation inhibitor having the structural formula ##STR7## where R and R' are lower alkyl, R" is lower alkyl or hydrogen, n is 1-4, and A is the residue of an alkanol or alkane polyol.
Claim 3
Dependent Claim
15 words
The polymer composition of claim 1 wherein the olefin polymer is a polymer of propylene.
Claim 4
Dependent Claim
12 words
The polymer composition of claim 1 wherein the olefin polymer is polypropylene.
Claim 5
Dependent Claim
11 words
The polymer composition of claim 1 wherein component (1) is 2,(2'-hydroxy-3',5'-ditertiarybutylphenyl)5-chlorobenzotriazole.
Claim 6
Dependent Claim
13 words
The polymer composition of claim 1 wherein component (2) is distearyl pentaerythritol diphosphite.
Claim 7
Independent Claim
102 words
A method for stabilizing an olefin against deterioration in the presence of ultraviolet radiation comprising adding stabilizing amounts of (1) a 2-hydroxyphenylbenzotriazole having the structural formula ##STR8## where R 1 is lower alkyl or halogen, R 2 is lower alkyl, halogen, or hydrogen, and X is chlorine or hydrogen, (2) a dialkyl pentaerythritol diphosphite wherein the alkyl groups each contain 8-20 carbon atoms, and (3) a phenolic ester oxidation inhibitor having the structural formula ##STR9## where R and R' are lower alkyl, R" is lower alkyl or hydrogen, n is 1-4, and A is the residue of an alkanol or alkane polyol.
Claim 8
Independent Claim
102 words
A method for stabilizing an olefin against deterioration in the presence of ultraviolet radiation comprising adding stabilizing amounts of (1) a 2-hydroxyphenylbenzotriazole having the structural formula ##STR8## where R 1 is lower alkyl or halogen, R 2 is lower alkyl, halogen, or hydrogen, and X is chlorine or hydrogen, (2) a dialkyl pentaerythritol diphosphite wherein the alkyl groups each contain 8-20 carbon atoms, and (3) a phenolic ester oxidation inhibitor having the structural formula ##STR9## where R and R' are lower alkyl, R" is lower alkyl or hydrogen, n is 1-4, and A is the residue of an alkanol or alkane polyol.
References Cited (Backward Citations)
US3039993A
Cited
US3322718A
Cited
US3502613A
Cited
US3409587A
Cited
US3641213A
Cited
US3988293A
Cited
US3781242A
Cited
US4025486A
Cited
US3878266A
Cited
US4066608A
Cited
US4094855A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-03 | 1983-12-03 | 1984-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-03 | 1987-12-03 | 1988-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-03 | 1991-12-03 | 1992-06-03 | $7700.00 | Window Closed / Lapsed |