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US5470919A
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Chlorinated ethylene/α-olefin copolymer rubber and composition containing the same
Assignee: Mitsui Chemicals Inc
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Filing: 1994-07-26
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Granted: 1995-11-28
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Expires: 2014-07-26
Abstract
Abstract A chlorinated ethylene/ alpha -olefin copolymer rubber which is a chlorinated product of an ethylene/ alpha -olefin copolymer rubber having a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms, which has a chlorine content of 20 to 40% by weight, and which has a Mooney viscosity [ML1+4(121 DEG C.)] of 10 to 190; and a composition comprising the chlorinated ethylene/ alpha -olefin copolymer rubber, (a) a reinforcing agent, (b) a softening agent, and (c) a vulcanizing agent.
Inventors
- 👤 Tetsuo Tojo
- 👤 Muneyuki Matsumoto
- 👤 Yoshiharu Kikuchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:44
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/18; C08F8/20; C08F210/00; C08F210/02; C08F8/22; C08K; C08K3/00; C08K5/00; C08K5/01; C08L; C08L23/00; C08L23/26; C08L23/28
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
63 words
A chlorinated ethylene/α-olefin copolymer rubber: which has a chlorine content of 20 to 40% by weight, which has a Mooney viscosity [ML 1+4 (121° C.)] of 10 to 190, and in which the ethylene/α-olefin copolymer rubber before the chlorination has a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms.
Claim 2
Dependent Claim
63 words
A chlorinated ethylene/α-olefin copolymer rubber: which has a chlorine content of 20 to 40% by weight, which has a Mooney viscosity [ML 1+4 (121° C.)] of 10 to 190, and in which the ethylene/α-olefin copolymer rubber before the chlorination has a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms.
Claim 3
Dependent Claim
33 words
The chlorinated ethylene/α-olefin copolymer rubber of claim 1 wherein the composition molar ratio of the ethylene unit and the α-olefin unit of the ethylene/α-olefin copolymer rubber before the chlorination is 85/15 to 95/5.
Claim 4
Dependent Claim
21 words
The chlorinated ethylene/α-olefin copolymer rubber of claim 1 wherein the number of carbon atoms of the α-olefin is 3 to 20.
Claim 5
Dependent Claim
57 words
A composition comprising 100 parts by weight of the chlorinated ethylene/α-olefin copolymer rubber of claim 1, (a) up to 300 parts by weight of a reinforcing agent, (b) up to 200 parts by weight of a softening agent, and (c) 5.0×10 -4 to 5.0×10 -2 mol, per 100 g of said copolymer rubber, of a vulcanizing agent.
Claim 6
Dependent Claim
64 words
A chlorinated ethylene/α-olefin copolymer rubber which is a chlorinated product of an ethylene/α-olefin copolymer rubber having a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms, which has a chlorine content of 20 to 40% by weight, and which has a Mooney viscosity [ML 1+4 (121° C.)] of 10 to 190.
Claim 7
Dependent Claim
64 words
A chlorinated ethylene/α-olefin copolymer rubber which is a chlorinated product of an ethylene/α-olefin copolymer rubber having a vinylidene bond at the terminal of the molecule, the number of said vinylidene bond being 0.05 to 1.00 per 1,000 carbon atoms, which has a chlorine content of 20 to 40% by weight, and which has a Mooney viscosity [ML 1+4 (121° C.)] of 10 to 190.
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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) | 1998-11-27 | 1999-05-29 | 1999-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-27 | 2003-05-29 | 2003-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-27 | 2007-05-29 | 2007-11-28 | $7700.00 | Window Closed / Lapsed |