Patent US4206111A successfully refreshed from Google Patents.
US4206111A
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US
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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 12:21
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.
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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) | 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 |