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Surface modifier for rubber composition, and rubber composition containing same

A technology for a rubber composition and a surface modifier, which is applied in the directions of transportation and packaging, special tires, tire parts, etc., can solve the problem of insufficient wax blooming inhibitory effect, reduced ozone resistance of the rubber composition, and appearance of the rubber composition. Deterioration and other problems, to achieve the effect of improving appearance, excellent appearance, and excellent ozone resistance

Active Publication Date: 2020-05-29
JAPAN FINE WAX CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, even if a hydrocarbon-based high-melting-point wax is blended, the ozone resistance of the rubber composition may be lowered, or the blooming inhibitory effect of the wax may be insufficient, and it cannot be considered that the effect of improving the appearance of the rubber composition can be satisfied.
In addition, if animal and vegetable waxes are blended, although a predetermined blooming suppression effect can be obtained, there is a concern that the wax crystals on the surface of the rubber will be finer, which may conversely deteriorate the appearance of the rubber composition.

Method used

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  • Surface modifier for rubber composition, and rubber composition containing same
  • Surface modifier for rubber composition, and rubber composition containing same
  • Surface modifier for rubber composition, and rubber composition containing same

Examples

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Embodiment

[0063] Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited to these Examples at all.

[0064] Mixed rubber (NR / BR) or styrene butadiene rubber (SBR), various additives, and materials having the compositions shown in Table 2 to Table 4 as surface modifiers are blended to prepare rubber compositions, The mixed rubber is obtained by blending the natural rubber shown in Table 1 as the rubber component (A) and the butadiene rubber in a ratio of 1:1 in parts by weight.

[0065] Each material of the surface modifier shown in Table 2 to Table 6 is as follows.

[0066] [Wax for preventing rubber aging (B)]

[0067] · OZOACE-0355 (hydrocarbon-based rubber antiaging agent), manufactured by Nippon Seika Co., Ltd.

[0068] · OZOACE-0015A (hydrocarbon-based rubber antiaging agent), manufactured by Nippon Seika Co., Ltd.

[0069] [Appearance Improver (C)]

[0070] · Hi-Mic-1080: microcrystalline wax, manufactured by Nippon Seika Co.,...

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Abstract

The present invention provides a surface modifier for rubber compositions which is able to improve the appearance of the rubber compositions without impairing the ozone resistance. The surface modifier for rubber compositions of the present invention contains a hydrocarbon-based wax (B) for preventing rubber aging and an appearance modifier (C), and contains linear monovalent primary alcohols in an amount exceeding 1.5 parts by weight but less than 35 parts by weight per 100 parts by weight of the surface modifier for rubber compositions. The primary alcohols comprise more than 35 parts by weight of a component having 30-38 carbon atoms, less than 25 parts by weight of a component having 12-26 carbon atoms, and less than 25 parts by weight of a component having 42-68 carbon atoms, per 100parts by weight of the primary alcohols.

Description

technical field [0001] The present invention relates to a surface modifier for a rubber composition and a rubber composition containing the modifier. Background technique [0002] In rubber compositions using natural rubber and / or diene-based synthetic rubber, a hydrocarbon-based rubber aging-preventing wax is blended in order to prevent ozone deterioration. The blended wax precipitates on the surface of the rubber (also called blooming or blooming) to form a thin film (also called a blooming film), which prevents rubber from deteriorating by blocking the contact between the rubber and ozone. Excessive blooming of the wax, on the other hand, can significantly damage the appearance of the surface of the rubber composition. In this deterioration of the appearance, there are whitening discoloration due to the wax itself, and brown discoloration due to deterioration of an anti-aging agent that blooms simultaneously with the wax. Therefore, it is desirable to inhibit excessive ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L21/00B60C1/00C08K5/05C08L91/06
CPCB60C1/00C08L21/00C08L91/06C08L7/00C08L9/00B60C1/0025B60C1/0016C08K3/04C08K5/05C08L99/00C08J3/095C08L7/02C08L23/22C08L55/02
Inventor 中村阳二安东彻昭田口新
Owner JAPAN FINE WAX CO LTD
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