Patent US4516689A successfully refreshed from Google Patents.
Patent US4454092A successfully refreshed from Google Patents.
US4454092A
Expired / Lapsed
US
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Method of producing partially crosslinked rubber-resin composition
Assignee: Mitsui Chemicals Inc
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Filing: 1982-08-05
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Granted: 1984-06-12
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Expires: 2002-08-05
Abstract
Abstract A method of producing partially crosslinked rubber-resin composition comprising directly feeding a pelletized peroxide-curable olefin copolymer composition, a peroxide-decomposing polyolefin resin and an organic peroxide compound to a twin-screw extruder under specific extruding conditions of weight of the copolymer rubber and specific energy at extrusion.
Inventors
- 👤 Shizuo Shimizu
- 👤 Shunji Abe
- 👤 Akira Matsuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:33
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; B; B29; B29C; B29C48/00; B29C48/25; B29C48/36; B29C48/395; B29C48/40; B29C48/78; B29C48/80; B29C48/802; C08L23/10; C08L23/12; C08L23/18; C08L23/20; C08L2205/00; C08L2205/03; C08L2205/035; C08L23/14; C08L23/142; C08L2312/00; C08L91/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
80 words
A method of producing partially crosslinked rubber-resin composition comprising directly feeding a pelletized peroxide-curable olefin copolymer rubber and a peroxide-decomposing polyolefin resin together with an organic peroxide compound to a twin-screw extruder so that the rubber and the resin are subjected to a dynamic heat treatment in the presence of the peroxide under the following conditions: X≦200, and Y≧0.003X+0.12 wherein "X" is the weight of the copolymer rubber (g/100 particle), and "Y" is the specific energy at the extrusion (KWhr/kg).
Claim 2
Independent Claim
80 words
A method of producing partially crosslinked rubber-resin composition comprising directly feeding a pelletized peroxide-curable olefin copolymer rubber and a peroxide-decomposing polyolefin resin together with an organic peroxide compound to a twin-screw extruder so that the rubber and the resin are subjected to a dynamic heat treatment in the presence of the peroxide under the following conditions: X≦200, and Y≧0.003X+0.12 wherein "X" is the weight of the copolymer rubber (g/100 particle), and "Y" is the specific energy at the extrusion (KWhr/kg).
Claim 3
Dependent Claim
41 words
A method of producing partially crosslinked rubber-resin composition according to claim 1, in which the dynamic heat treatment is carried out under the condition: Z≦25 wherein "Z" stands for the longer diameter (mm) of particle of the peroxide-curable olefin copolymer rubber.
Claim 4
Dependent Claim
25 words
A method of producing partially crosslinked rubber-resin composition according to claim 2, in which the dynamic heat treatment is carried out under the condition: 0.5≦Z≦20.
Claim 5
Dependent Claim
26 words
A method of producing partially crosslinked rubber-resin composition according to claim 1, in which the copolymer rubber particle having "X" of 0.1 or more are used.
Claim 6
Dependent Claim
31 words
A method of producing partially crosslinked rubber-resin composition according to claim 1, in which the dynamic heat treatment is carried out under the extruder specific energy "Y" of 1.5 or less.
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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) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |