EP0279414A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Rubber composition and the use thereof for the production of an oil seal or a rubber hose
Assignee: JSR Corp
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Filing: 1988-02-16
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Granted: —
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Expires: 2008-02-16
Abstract
Abstract A rubber composition obtained by compounding (B) from 0.005 to 50 parts by weight of an polyorganohydrogensiloxane and (C) from 0.00001 to 1 part by weight of a compound of a transition metal belonging to the group VIII with (A) 100 parts by weight of a rubber-forming polymer mainly comprising (I) from 3 to 70% by weight of a polyorganosiloxane represented by the formula: wherein R represents a substituted or unsubstituted monovalent organic group, 0.02 to 10 mole% of which being a vinyl group; and a represents a number of from 1.900 to 2.004, and having a degree of polymerization of from 500 to 10,000 and (II) from 30 to 97% by weight of organic rubber, and subjecting the resulting compound to hydrosilylation while effecting shear deformation. The rubber composition is excellent in roll processing properties, mechanical strength, heat resistance, and low-temperature property and is suitable for the production of an oil seal and a rubber hose.
Inventors
- 👤 Itsuki Umeda
- 👤 Masaaki Takashima
- 👤 Yoshiaki Zama
- 👤 Yasuhiko Takemura
- 👤 Yuichi C/O Toshiba Silicone Co. Ltd. Funabashi
- 👤 Junichiro C/O Toshiba Silicone Co. Ltd. Watanabe
- 👤 Kiyoshi C/O Toshiba Silicone Co. Ltd. Takeda
- 👤 Makoto C/O Toshiba Silicone Co. Ltd. Matsumoto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 03:14
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/16; C08K; C08K3/00; C08K3/02; C08K3/06; C08K3/18; C08K3/24; C08K3/26; C08K5/00; C08K5/0008; C08K5/0025; C08K5/04; C08K5/09; C08K5/14; C08L15/00; C08L21/00; C08L23/04; C08L23/08; C08L23/0846; C08L23/0869; C08L71/00; C08L71/02; C08L71/03; C08L83/00; C08L83/04; C08L9/00; C08L9/02; C08G; C08G77/00; C08G77/04; C08G77/12; C08G77/20; C08L2205/00; C08L2205/03; C08L2312/00
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
126 words
A rubber composition obtained by compounding (B) from 0.005 to 50 parts by weight of an polyorganohydrogensiloxane and (C) from 0.00001 to 1 part by weight of a compound of a transition metal belonging to the group VIII with (A) 100 parts by weight of a rubber-forming polymer mainly comprising (I) from 3 to 70% by weight of a polyorganosiloxane represented by the formula: wherein R represents a substituted or unsubstituted monovalent organic group, 0.02 to 10 mole% of which being a vinyl group; and a represents a number of from 1.900 to 2.004, and having a polymerization degree of from 500 to 10,000 and (II) from 30 to 97% by weight of organic rubber, and subjecting the resulting compound to hydrosilylation while effecting shear deformation.
Claim 2
Dependent Claim
126 words
A rubber composition obtained by compounding (B) from 0.005 to 50 parts by weight of an polyorganohydrogensiloxane and (C) from 0.00001 to 1 part by weight of a compound of a transition metal belonging to the group VIII with (A) 100 parts by weight of a rubber-forming polymer mainly comprising (I) from 3 to 70% by weight of a polyorganosiloxane represented by the formula: wherein R represents a substituted or unsubstituted monovalent organic group, 0.02 to 10 mole% of which being a vinyl group; and a represents a number of from 1.900 to 2.004, and having a polymerization degree of from 500 to 10,000 and (II) from 30 to 97% by weight of organic rubber, and subjecting the resulting compound to hydrosilylation while effecting shear deformation.
Claim 3
Dependent Claim
25 words
A rubber composition as claimed in claim 1, wherein said organic rubber has a Mooney viscosity (ML 1+4 , 100°C) of from 10 to 200.
Claim 4
Dependent Claim
39 words
A rubber composition as claimed in Claim 1 or 2, wherein said organic rubber is selected from the group consisting of an acrylic rubber, an ethylene-α-olefin rubber, an acrylonitrile-butadiene rubber, a fluororubber, an epichlorohydrin rubber, and a chlorosulfonated polyethylene.
Claim 5
Dependent Claim
16 words
A rubber composition as claimed in claim 1, wherein said organic rubber is an acrylic rubber.
Claim 6
Dependent Claim
139 words
A rubber composition as claimed in claim 1, wherein said organic rubber comrises from 50 to 95% by weight of (II-a) an acrylic rubber having an epoxy group, a halogen atom, a carboxyl group or a crosslinkable group represented by formula (i): wherein R¹, R², and R³ each represents a hydrogen atom or a monovalent or divalent organic group, and from 5 to 50% by weight of (II-b) an acrylic rubber having a crosslinkable group represented by formula (ii): wherein R⁴ represents a methylene group, -O-, -S-, or -NH-; R represents a substituted or unsubstituted monovalent organic group, and R⁵, R⁶, and R⁷ each represents a hydrogen atom or a mono- to trivalent organic group, and at least two of R⁵, R⁶, and R⁷ are hydrogen atoms, based on the total amount of said acrylic rubbers (II-a) and (II-b).
Claim 7
Dependent Claim
17 words
A rubber composition as claimed in claim 1, wherein said transition metal compound is a platinum compound.
Claim 8
Dependent Claim
20 words
A rubber composition as claimed in claim 1, wherein said composition further comprises a cross-linking agent for the organic rubber.
Claim 9
Dependent Claim
17 words
Use of the rubber composition as claimed in claim 7 for the production of an oil seal.
Claim 10
Dependent Claim
17 words
Use of the rubber composition as claimed in claim 7 for the production of a rubber hose.
References Cited (Backward Citations)
No citation records indexed.
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