Rubber composition for coating cord

A rubber composition, cord technology, applied in the direction of unspecified rubber coating, coating, yarn, etc., which can solve the problems of reduced processability, rigidity, and rolling resistance without consideration

Inactive Publication Date: 2007-10-03
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a lot of room for improvement, since the reduction in workability, rigidity, and rolling resistance due to the increase in viscosity in the rubber kneading process has not been considered here.

Method used

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  • Rubber composition for coating cord
  • Rubber composition for coating cord
  • Rubber composition for coating cord

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0053] The present invention will be specifically described below in conjunction with the examples, but the present invention is not limited thereto.

[0054] The various chemical components used in Examples and Comparative Examples will be collectively explained below.

[0055] Natural Rubber (NR): RSS#3

[0056] Butadiene rubber (BR): BR150B available from Ube Industries Co., Ltd.

[0057] Styrene-butadiene rubber (SBR): SBR1502 purchased from JSR Corporation (content of styrene units: 23.5 wt%)

[0058] Carbon black: DIABLACK LH (N326) available from Mitsubishi Chemical Co.

[0059] Fragrance oil: Process X-260 purchased from Nippon Energy Corporation

[0060] Antioxidant: NOCRAC 6C (N-(1,3-dimethylbutyl)-N'-phenyl-p-phenylenediamine) available from Ouchi Shinko Chemical Industry Co., Ltd.

[0061] Cobalt organic acid: cobalt stearate (10% cobalt element) purchased from DAINIPPON ink and chemical company

[0062] Zinc oxide: Ginrei R available from Toho Zinc Co., Ltd. ...

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Abstract

The present invention provides the rubber composition for coating a cord excellent in processability, rigidity, rolling resistance property, rubber strength, and durability. The rubber composition for coating a cord comprises 0.5 to 10 parts by weight of a phenol resin and / or a modified phenol resin, and 0.5 to 5 parts by weight of at least one compound selected from the group consisting of a resorcin, a resorcin condensate, a modified resorcin condensate, a cresol resin, and a modified cresol resin on the basis of 100 parts by weight of a rubber component.

Description

technical field [0001] The present invention relates to a rubber composition for coating cords. Background technique [0002] Traditionally, resorcinol and / or modified resorcinol resins, and selected from hexamethylenetetramine (HMT ), hexamethoxymethylolmelamine (HMMM) and at least one crosslinking agent of hexamethylolmelamine pentamethyl ether (HMMPME). Resorcinol and / or modified resorcinol resin (hereinafter referred to as resorcinol) can improve the rigidity (E * ) and play a role in curing the rubber layer around the outer surface of the cord. Resorcinol also acts to increase the adhesion between the rubber and the cord by forming a composite bonding layer with the impregnated layer (resorcinol-formaldehyde resin) in the cord. [0003] As mentioned above, resorcinol is used to improve the rigidity of the rubber composition (E * ) and is used to increase the adhesion between the rubber and the cord. However, in the final process, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D121/00D02G3/48C09D161/06C09D161/14
CPCC08L61/06C08K5/098C08L21/00C08L2666/16
Inventor 宫崎达也
Owner SUMITOMO RUBBER IND LTD
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