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Rubber composition for adhesive bonding

A technology for bonding rubber and composites, applied to other rubber adhesives, adhesive types, non-polymer adhesive additives, etc., can solve problems such as changes in physical strength, reduced breaking strength, and poor dispersion

Inactive Publication Date: 2007-01-31
THE YOKOHAMA RUBBER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, cobalt acetylacetonate is a substance that is insoluble in rubber and has poor dispersibility, so it often causes problems such as a change in physical strength and a decrease in breaking strength in particular.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] In order to further clarify the present invention, the following examples, comparative examples and standard examples are given. However, it goes without saying that the scope of the present invention is not limited to these examples.

[0018] Standard example 1, embodiment 1-2 and comparative example 1

[0019] The components of each formulation listed in Table I were mixed at a mixing temperature of 120°C according to ASTM D1871. Each unvulcanized rubber composition obtained has a 3+9+15 (0.17) structure (note: refers to a three-layer twisted structure (twisted structure) of 3, 9 and 15 beams with a diameter of 0.17 mm, and buried Brass-plated steel cords with a length of 25 mm. Then, vulcanized at 148° C. for 45 minutes to prepare samples. Each sample was left to stand at 130° C. and a humidity of 95% for 72 hours for hygrothermal degradation. Then , Pull out the steel cord and measure the rubber coverage (%).

[0020] The results are shown in Table I. The larger...

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PUM

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Abstract

Disclosed is a rubber composition for adhesive bonding which contains 100 parts by weight of a rubber component and 0.1-3 parts by weight of a metal acetylacetonate having an average particle diameter of not more than 50 mum. Such a rubber composition for adhesive bonding is improved in break characteristics.

Description

Technical field [0001] The present invention relates to an adhesive rubber composition, and more particularly, to an adhesive rubber composition having improved fracture properties by incorporating a predetermined amount of metal acetylacetonate of a specified particle size. Background technique [0002] Organic cobaltates are usually added for the bonding of rubber to metal, for example, the bonding of steel cord rubber for tires. A variety of organic cobaltates exist. Among them, cobalt acetylacetonate is used to prevent oxidation and degradation and improve adhesion (for example, see Japanese Unexamined Patent Publication (Kokai) No. 54-47778, Japanese Unexamined Patent Publication (Kokai) No. 5-65370, etc.). On the other hand, rubber designed for bonding with metals, for example, is often used as steel cords of composite materials such as tires, and therefore, physical strength or fracture properties become important. However, cobalt acetylacetonate is a substance that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00B60C1/00C08K5/56C09J11/06C09J121/00C08K5/00
CPCC08K5/0091C08L21/00C08L9/00B60C1/00C08L7/00C08L2666/02
Inventor 辻拓卫
Owner THE YOKOHAMA RUBBER CO LTD
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