METHOD FOR PRODUCING RUBBER COMPOSITION, RUBBER COMPOSITION AND TIRE

WIPO Patent Application WO/2023/228463

A1

The purpose of the present invention is to provide a method for producing a rubber composition, the method enabling the achievement of a rubber composition which exhibits improved dispersibility of a filler, while having low loss tangent.　In order to achieve the above, the present invention provides a method for producing a rubber composition that contains a rubber component (A) which contains at least one rubber that is selected from among natural rubbers and synthetic diene rubbers, a filler that contains an inorganic filler (B), a silane coupling agent (C) and a vulcanization accelerator (D). This method for producing a rubber composition is characterized in that: the rubber composition is knead in a plurality of stages; in a first stage of the kneading, the rubber component (A), some or all of the inorganic filler (B), some or all of the silane coupling agent (C) and the vulcanization accelerator (D) are kneaded; and the rubber component contains a modified copolymer that has been modified with a modifying agent which contains a compound represented by formula (1).

KIMURA MADOKA (JP)

PCT/JP2023/000858

November 30, 2023

January 13, 2023

Click for automatic bibliography generation  

BRIDGESTONE CORP (JP)

C08J3/20; C08K3/013; C08K3/04; C08K5/00; C08K5/54; C08L7/00; C08L9/00; C08L15/00

WO2017077714A1

2017-05-11

JP2021085025A	2021-06-03
JP2021098765A	2021-07-01
JP2022521596A	2022-04-11
EP3971238A1	2022-03-23
JP2011236368A	2011-11-24
JP2019001943A	2019-01-10
JP2019206643A	2019-12-05
JP2019534373A	2019-11-28

SUGIMURA Kenji (JP)

View/Download PDF      PDF Help

Previous Patent: RESIN MOLDING DEVICE, AND METHOD FOR MANUFACTURING RESIN MOLDED ARTICLE

Next Patent: TIRE