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Rubber composition

A rubber composition and rubber technology, applied in the field of rubber composition, can solve the problems of reduced durability and achieve the effect of excellent mold release and durability

Active Publication Date: 2019-02-05
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the lubricity imparted to the rubber composition, the suppression of blooming onto the rubber surface, and the filler dispersibility are not satisfactory, there is an effect of suppressing minor defects of the vulcanized product, such as bare, and a decrease in durability The problem

Method used

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  • Rubber composition
  • Rubber composition
  • Rubber composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0085] The present invention will be described with reference to examples, but the present invention is not limited to the examples.

[0086] Hereinafter, various chemicals used in Examples and Comparative Examples will be described.

[0087] Oleic acid amide: ALFLOW E-10 manufactured by NOF Corporation (transparent melting point: 74°C)

[0088] Calcium stearate: CALCIUM STEARATE G manufactured by NOF Corporation (transparent melting point: 154°C)

[0089] Calcium 12-hydroxystearate: Calcium Castor Stearate manufactured by NOF Corporation (transparent melting point: 152°C)

[0090] Stearic acid amide: ALFLOW S-10 manufactured by NOF Corporation (transparent melting point: 103°C)

[0091] Erucamide: ALFLOW P-10 manufactured by NOF Corporation (transparent melting point: 82°C)

[0092] IIR: BUTYL268 (isoprene content: 1.70 mol%, non-halogenated butyl rubber) available from ExxonMobil

[0093] CR: Neoprene W (Neoprene W) made by Showa Denko Co., Ltd.

[0094] Carbon black: S...

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Abstract

A rubber composition which contains 0.1-10 parts by mass of an omega-9 fatty acid amide and / or stearic acid amide and 0.1-100 parts by mass of a resin per 100 parts by mass of a rubber component thatcontains 80% by mass or more of a butyl rubber. This rubber composition is configured such that the omega-9 fatty acid amide and / or stearic acid amide are contained in the form of a mixture which contains 20-80% by mass of an omega-9 fatty acid amide and / or stearic acid amide and 20-80% by mass of a metal salt of stearic acid or hydroxystearic acid.

Description

technical field [0001] The present invention relates to a rubber composition containing a rubber component, a fatty acid amide and a resin. Background technique [0002] Conventionally, rubber products such as tires and vulcanized bladders are produced by vulcanizing an unvulcanized rubber composition obtained by kneading the respective compounding ingredients. When vulcanization is performed by heat and pressure with the outer frame metal mold and the vulcanization bladder or metal core from the inside, if excessive adhesion of the rubber composition to the vulcanization metal mold occurs, it may result in defective products and reduced durability life Or metal mold contamination occurs. [0003] In rubber compositions containing a large amount of butyl-based rubber components, high airtightness, air retention, and surface smoothness are ensured by making the rubber composition contain processing oil and resin components. In particular, process oils and crosslinkable resi...

Claims

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Application Information

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IPC IPC(8): C08L23/22B29C33/40B29C35/02B60C5/14C08K5/098C08K5/20C08L101/00
CPCB29C33/40B29C35/02B60C5/14C08K5/098C08K5/20C08L23/22C08L101/00B29D30/0654B29D2030/0655B29D2030/0682B29D30/0681
Inventor 宫崎达也
Owner SUMITOMO RUBBER IND LTD