US4046735A
Expired / Lapsed
US
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Stabilizers of nitrile polymers using triazine derivatives
Assignee: Monsanto Co
•
Filing: 1976-09-02
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Granted: 1977-09-06
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Expires: 1996-09-02
Abstract
Abstract Nitrile polymers are stabilized against color degradation by inclusion of an effective amount of a triazine derivative having the formula; ##STR1## wherein R 1 and R 2 each independently represent an alkyl or aryl group and X and Y each independently represent O, S, NH or NR 3 wherein each R 3 independently represents H, alkyl or aryl, with the further proviso that R 1 and R 2 can be H when X and/or Y is NH, NR 3 or S.
Inventors
- 👤 Alva F. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:57
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/36; C08K5/37; C08K5/378
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
140 words
A nitrile polymer composition stable toward thermal discoloration which comprises a polymer of at least 40% by weight of a nitrile monomer having the formula: ##STR9## wherein R is hydrogen, lower alkyl having from 1 to 4 carbon atoms or halogen and an effective amount of a stabilizing agent having the formula: ##STR10## wherein R 1 and R 2 each independently represent an alkyl group having 1 to 8 carbon atoms or an aryl group having 6 to 20 carbons; and X and Y each represent O, S, NH or NR 3 wherein each R 3 independently represents H, an alkyl group of 1 to 8 carbon atoms or an aryl group of 6 to 20 carbon atoms with the proviso that R 1 and R 2 may be H when X and/or Y is NH, NR 3 or S.
Claim 2
Dependent Claim
140 words
A nitrile polymer composition stable toward thermal discoloration which comprises a polymer of at least 40% by weight of a nitrile monomer having the formula: ##STR9## wherein R is hydrogen, lower alkyl having from 1 to 4 carbon atoms or halogen and an effective amount of a stabilizing agent having the formula: ##STR10## wherein R 1 and R 2 each independently represent an alkyl group having 1 to 8 carbon atoms or an aryl group having 6 to 20 carbons; and X and Y each represent O, S, NH or NR 3 wherein each R 3 independently represents H, an alkyl group of 1 to 8 carbon atoms or an aryl group of 6 to 20 carbon atoms with the proviso that R 1 and R 2 may be H when X and/or Y is NH, NR 3 or S.
Claim 3
Dependent Claim
28 words
The composition of claim 1 wherein from about 0.005 to about 0.5% by weight of said stabilizing agent based on the total weight of nitrile composition is used.
Claim 4
Dependent Claim
34 words
The composition of claim 2 wherein said alkyl group in the stabilizing agent contains from 1 to 4 carbon atoms and said aryl group in the stabilizing agent contains 6 to 14 carbon atoms.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein said nitrile monomer is acrylonitrile.
Claim 6
Dependent Claim
18 words
The composition of claim 1 wherein said composition contains a comonomer material selected from the group consisting of:
Claim 7
Dependent Claim
30 words
a. monovinylidene aromatic hydrocarbon monomers of the formula: ##STR11## wherein R 4 is hydrogen, chlorine or methyl and R 5 is an aryl group of 6 to 10 carbon atoms.
Claim 8
Dependent Claim
30 words
a. monovinylidene aromatic hydrocarbon monomers of the formula: ##STR11## wherein R 4 is hydrogen, chlorine or methyl and R 5 is an aryl group of 6 to 10 carbon atoms.
Claim 9
Dependent Claim
12 words
b. lower alpha olefins of from 2 to 8 carbon atoms; and
Claim 10
Dependent Claim
12 words
b. lower alpha olefins of from 2 to 8 carbon atoms; and
Claim 11
Dependent Claim
24 words
c. acrylic acid and methacrylic acid and the corresponding acrylate and methacrylate alkyl esters wherein the alkyl group contains 1 to 4 carbon atoms.
Claim 12
Dependent Claim
24 words
c. acrylic acid and methacrylic acid and the corresponding acrylate and methacrylate alkyl esters wherein the alkyl group contains 1 to 4 carbon atoms.
Claim 13
Dependent Claim
28 words
The composition of claim 5 wherein from about 0.005 to about 0.5% by weight of said stabilizing agent based on the total weight of nitrile composition is used.
Claim 14
Dependent Claim
11 words
The composition of claim 6 wherein said nitrile polymer is acrylonitrile.
Claim 15
Dependent Claim
37 words
The composition of claim 7 wherein said comonomer is styrene, said alkyl group in the stabilizing agent contains 1 to 4 carbon atoms and said aryl group in the stabilizing agent contains 6 to 14 carbon atoms.
Claim 16
Dependent Claim
28 words
The composition of claim 8 wherein from about 0.01 to about 0.2% by weight of said stabilizing agent based on the total weight of the composition is used.
Claim 17
Dependent Claim
26 words
The composition of claim 9 wherein said stabilizing agent is selected from the group consisting of 2-chloro-4,6-di (para benzylphenoxy)-s-triazine, 2-chloro-4,6-dimethoxy-s-triazine, 2-chloro-4,6-diamino-s-triazine, 2-chloro-4,6-diphenoxy-s-triazine, 2-chloro-4,6-di (dimethylamino)-s-triazine and 2-chloro-4,6-dithiophenyl-s-triazine.
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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) | 1980-09-05 | 1981-03-07 | 1981-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-05 | 1985-03-07 | 1985-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-05 | 1989-03-07 | 1989-09-06 | $7700.00 | Window Closed / Lapsed |