US4182803A
Expired / Lapsed
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Elastomer
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1976-06-10
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Granted: 1980-01-08
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Expires: 1996-06-10
Abstract
Abstract A new modified elastomer having a phenolic hydroxyl group on the side chain, which is excellent in physical properties, crosslinkability, thermal stability, tackiness, adhesiveness and compatibility, is obtained by copolymerizing at least one monomer selected from the group consisting of conjugated dienes, and mono-ethylenically unsaturated monomers, or graft-copolymerizing an elastomer prepared by polymerizing at least one monomer defined above, with a phenolic monomer represented by the general formula, <IMAGE> wherein R1, R2, R3, R4 and R5 are individually an alkyl group or a hydrogen atom.
Inventors
- 👤 Shuichi Kanagawa
- 👤 Tamotsu Miki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:23
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F12/00; C08F12/02; C08F12/04; C08F12/14; C08F12/22; C08F12/24; C08F279/00; C08F279/02
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
89 words
A modified elastomer having a phenolic hydroxyl group on the side chain, characterized in that the modified elastomer is obtained by polymerizing (a) at least one conjugated diene selected from the group consisting of butadiene, isoprene, 1,3-pentadiene, and chloroprene, with (b) 0.5 to 10 parts by weight per 100 parts by weight of said conjugated diene of a phenolic monomer of the formula ##STR3## wherein R 1 , R 2 , R 3 , R 4 , and R 5 are individually an alkyl group or a hydrogen atom.
Claim 2
Dependent Claim
89 words
A modified elastomer having a phenolic hydroxyl group on the side chain, characterized in that the modified elastomer is obtained by polymerizing (a) at least one conjugated diene selected from the group consisting of butadiene, isoprene, 1,3-pentadiene, and chloroprene, with (b) 0.5 to 10 parts by weight per 100 parts by weight of said conjugated diene of a phenolic monomer of the formula ##STR3## wherein R 1 , R 2 , R 3 , R 4 , and R 5 are individually an alkyl group or a hydrogen atom.
Claim 3
Dependent Claim
91 words
A modified elastomer having a phenolic hydroxyl group on the side chain, characterized in that the modified elastomer is obtained by polymerizing (a) a mixture of at least one conjugated diene and at least one monovinyl aromatic hydrocarbon, unsaturated nitrile, or mono-olefin with (b) 0.5 to 10 parts by weight per 100 parts by weight of said misture of a phenolic monomer of the formula ##STR4## wherein R 1 , R 2 , R 3 , R 4 , and R 5 are individually an alkyl group or a hydrogen atom.
Claim 4
Dependent Claim
91 words
A modified elastomer having a phenolic hydroxyl group on the side chain, characterized in that the modified elastomer is obtained by polymerizing (a) a mixture of at least one conjugated diene and at least one monovinyl aromatic hydrocarbon, unsaturated nitrile, or mono-olefin with (b) 0.5 to 10 parts by weight per 100 parts by weight of said misture of a phenolic monomer of the formula ##STR4## wherein R 1 , R 2 , R 3 , R 4 , and R 5 are individually an alkyl group or a hydrogen atom.
Claim 5
Dependent Claim
12 words
The modified elastomer of claim 1 wherein said conjugated diene is butadiene.
Claim 6
Dependent Claim
12 words
The modified elastomer of claim 2 wherein said conjugated diene is butadiene.
Claim 7
Dependent Claim
13 words
The modified elastomer of claim 2 wherein said monovinyl aromatic hydrocarbon is styrene.
Claim 8
Dependent Claim
12 words
The modified elastomer of claim 2 wherein said unsaturated nitrile is acrylonitrile.
Claim 9
Dependent Claim
11 words
The modified elastomer of claim 2 wherein said monoolefin is i-butene.
Claim 10
Dependent Claim
12 words
The modified elastomer of claim 1 wherein said phenolic monomer is m-hydroxy-α-methylstyrene.
Claim 11
Dependent Claim
12 words
The modified elastomer of claim 2 wherein said phenolic monomer is m-hydroxy-α-methylstyrene.
Claim 12
Dependent Claim
38 words
The modified elastomer of claim 1 wherein said phenolic monomer is at least one member selected from the group consisting of m-hydroxystyrene, m-hydroxy-α-methylstyrene, 3-hydroxy-4-methylstyrene, 3-hydroxy-4,5-dimethylstyrene, 3-hydroxy-4-isopropylstyrene, 3-hydroxy-4,6-diisopropylstyrene, 3-hydroxy-4-tert-butylstyrene, 3-hydroxy-4,6-di-tert-butylstyrene, 3-hydroxy-4-methyl-α-methylstyrene, 3-hydroxy-4,6-dimethyl-α-methylstyrene, 3-hydroxy-4-isopropyl-α-methylstyrene, 3-hydroxy-4,6-diisopropyl-α-methylstyrene, 3-hydroxy-4-tert-butyl-α-methylstyrene, 3-hydroxy-4,6-di-tert-butyl-α-methylstyrene, 3-hydroxy-4-nonylstyrene, and 3-hydroxy-4-nonyl-α-methylstyrene.
Claim 13
Dependent Claim
26 words
The modified elastomer of claim 2 wherein said conjugated diene is at least one member selected from the group consisting of butadiene, isoprene, 1,3-pentadiene, and chloroprene.
Claim 14
Dependent Claim
19 words
The modified elastomer of claim 1 wherein the copolymerization is carried out according to radical copolymerization or cationic copolymerization.
Claim 15
Dependent Claim
36 words
The modified elastomer of claim 12 wherein the radical copolymerization is carried out according to emulsion-, solution-, bulk- or suspension polymerization in the presence of a polymerization initiator at a temperature of 0° to 100° C.
Claim 16
Dependent Claim
30 words
The modified elastomer of claim 13 wherein the polymerization initiator is at least one member selected from the group consisting of hydroperoxides, peracids and their esters, peroxides and azo compounds.
Claim 17
Dependent Claim
33 words
The modified elastomer of claim 12 wherein the cationic copolymerization is carried out according to solution- or bulk-polymerization in the presence of a polymerization initiator at a temperature of -100° to 20° C.
Claim 18
Dependent Claim
17 words
The modified elastomer of claim 15 wherein the polymerization initiator is a Friedel-Crafts catalyst type metal halide.
Claim 19
Dependent Claim
38 words
The modified elastomer of claim 2 wherein said phenolic monomer is at least one member selected from the group consisting of m-hydroxy-styrene, m-hydroxy-α-methylstyrene, 3-hydroxy-4-methylstyrene, 3-hydroxy-4,6-dimethylstyrene, 3-hydroxy-4-isopropylstyrene, 3-hydroxy-4,6-diisopropylstyrene, 3-hydroxy-4-tert-butylstyrene, 3-hydroxy-4,6-di-tert-butylstyrene, 3-hydroxy-4-methyl-α-methylstyrene, 3-hydroxy-4,6-dimethyl-α-methylstyrene, 3-hydroxy-4-isopropyl-α-methylstyrene, 3-hydroxy-4,6-diisopropyl-α-methylstyrene, 3-hydroxy-4-tert-butyl-α-methylstyrene, 3-hydroxy-4,6-di-tert-butyl-α-methylstyrene, 3-hydroxy-4-nonylstyrene, and 3-hydroxy-4-nonyl-α-methylstyrene.
Claim 20
Dependent Claim
19 words
The modified elastomer of claim 2 wherein the copolymerization is carried out according to radical copolymerization or cationic copolymerization.
Claim 21
Dependent Claim
36 words
The modified elastomer of claim 18 wherein the radical copolymerization is carried out according to emulsion-, solution-, bulk- or suspension polymerization in the presence of a polymerization initiator at a temperature of 0° to 100° C.
Claim 22
Dependent Claim
30 words
The modified elastomer of claim 19 wherein the polymerization initiator is at least one member selected from the group consisting of hydroperoxides, peracids and their esters, peroxides and azo compounds.
Claim 23
Dependent Claim
33 words
The modified elastomer of claim 18 wherein the cationic copolymerization is carried out according to solution- or bulk-polymerization in the presence of a polymerization initiator at a temperature of -100° to 20° C.
Claim 24
Dependent Claim
17 words
The modified elastomer of claim 21 wherein the polymerization initiator is a Friedel-Crafts catalyst type metal halide.
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) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |