Title:
VULCANIZABLE RUBBER COMPOSITION
Document Type and Number:
Japanese Patent JP3573174
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject composition excellent in freeze resistance and Freon gas transmission resistance, useful as a rubber material for a Freon hose of freeze-resistant specification, by blending a nitrile group-containing highly saturated copolymer rubber with ultrafine magnesium silicate and a vulcanizing agent.
SOLUTION: This rubber composition is obtained by blending (A) a nitrile group-containing highly unsaturated copolymer rubber obtained by hydrogenating a conjugated diene part of an unsaturated nitrile-conjugated diene-unsaturated carboxylic acid ester copolymer with (B) ultrafine magnesium silicate and (C) a vulcanizing agent. In the component A, acrylonitrile is preferable as the unsaturated nitrile, butadiene is preferable as the conjugated diene and an unsaturated dicarboxylic aid dialkyl ester is preferable as the unsaturated carboxylic acid ester. The component B is obtained by grinding and classifying hydrous magnesium silicate followed by baking and has ≤10μm, preferably ≤8μm, more preferably ≤1μm average diameter.
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Inventors:
Yoshiaki Aimura
Hide Ito
Takeshi Kunno
Hide Ito
Takeshi Kunno
Application Number:
JP30646295A
Publication Date:
October 06, 2004
Filing Date:
October 31, 1995
Export Citation:
Assignee:
Zeon Corporation
International Classes:
C08K3/00; C08K3/30; B29D23/00; C08K3/34; C08K5/36; C08L9/02; C08L21/00; B29K33/18; (IPC1-7): C08L9/02; C08K3/34
Domestic Patent References:
| JP62240338A |