Masterbatch, Rubber Composition, And Pneumatic Tire

A technology of rubber composition and masterbatch, applied in special tires, tire parts, tire tread/tread pattern, etc., can solve the problems of dissatisfaction, reinforcement and cost advantages, etc., and achieve the effect of improving rolling resistance

Inactive Publication Date: 2013-07-17
SUMITOMO RUBBER IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, even this method is unsatisfactory and should be improved since such fibers are not advantageous in terms of reinforcement and cost compared to traditional fillers such as carbon black and / or silica

Method used

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  • Masterbatch, Rubber Composition, And Pneumatic Tire
  • Masterbatch, Rubber Composition, And Pneumatic Tire
  • Masterbatch, Rubber Composition, And Pneumatic Tire

Examples

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Embodiment

[0091] The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples.

[0092] The chemicals used in the examples are shown below.

[0093] Natural rubber latex: fresh latex, purchased from Muhibbah LATEKS Sdn Bhd (Sdn. Bhd.).

[0094] BR Latex: Prepared by the following method.

[0095] SBR Latex: Prepared by the following method.

[0096] Microfibrillated plant fiber: NEOFIBER (manufactured by OJI SEITAI KAISHA CORPORATION).

[0097] Surfactant: Emal-E (sodium polyoxyethylene lauryl ether sulfate) (manufactured by Kao Corporation).

[0098] NaOH: NaOH (manufactured by Wako Pure Chemical Industries, Ltd.).

[0099] Coagulant: POIZ C-60H (methacrylate polymer) (manufactured by Kao Corporation).

[0100] Coagulant: 1% sulfuric acid (manufactured by Wako Pure Chemical Industries, Ltd.

[0101] NR:TSR20

[0102] IR: IR2200

[0103] BR 1: BR150B (manufactured by Ube Industries, Ltd.).

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Abstract

The present invention aims to provide a masterbatch which enables microfibrillated plant fibers to be well dispersed in a rubber composition so that they can provide reinforcement equal to or greater than that by conventional fillers; a rubber composition containing the masterbatch; and a pneumatic tire produced using the rubber composition. The present invention relates to a masterbatch containing a modified natural rubber with a phosphorus content of 200 ppm or less, and microfibrillated plant fibers. Preferably, the microfibrillated plant fibers in a primary form have an average fiber diameter of 4 nm to 10 [mu]m and an average fiber length of 100 nm to 200 [mu]m.

Description

technical field [0001] The present invention relates to a masterbatch, a rubber composition containing the masterbatch, and a pneumatic tire manufactured using the rubber composition. Background technique [0002] Adding microfibrillated plant fibers, such as cellulose fibers, as a filler to a rubber composition can strengthen the rubber composition and increase the hardness and modulus of the rubber composition. However, microfibrillated plant fibers have poor compatibility with rubber components and thus poor dispersibility, and thus, they cause deterioration in tensile properties and fuel economy. Therefore, there is a need for a method to improve the dispersibility of microfibrillated plant fibers. [0003] Patent Document 1 discloses a method of improving compatibility between a rubber component and microfibrillated plant fibers by chemically modifying microfibrillated plant fibers. However, even this method is unsatisfactory and should be improved since such fibers a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L1/02C08J3/22C08L7/00C08L9/00C08K3/04C08K3/36B60C1/00
CPCC08J5/045C08K7/02C08J3/226C08J2307/02C08J2309/10C08J2407/02C08J2409/08C08J2409/10B60C1/00B60C2011/145C08J3/22C08L7/00
Inventor 宫崎达也宫崎澄子
Owner SUMITOMO RUBBER IND LTD
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