Title:
METHOD FOR PRODUCING RUBBER WET MASTER BATCH, METHOD FOR PRODUCING RUBBER COMPOSITION, AND METHOD FOR PRODUCING TIRE
Document Type and Number:
WIPO Patent Application WO/2017/033472
Kind Code:
A1
Abstract:
The objective of the present invention is to provide a method for producing a rubber wet master batch that serves as a starting material for a vulcanized rubber having excellent fatigue properties, low heat generation properties and tensile characteristics.
A rubber wet master batch is produced by a method that comprises: a step for preparing a latex that has a magnesium content of 150 ppm or less; a step for forming a mixed liquid; and a step for obtaining a coagulum by causing coagulation of the mixed liquid. The latex contains rubber particles having a 90% volume particle diameter of 2 μm or less. The step for forming a mixed liquid comprises a step for mixing a latex and a dispersion solvent. The step for forming a mixed liquid additionally comprises a step for mixing a slurry containing a filler with a latex solution that is obtained in the step for mixing a latex and a dispersion solvent. The step for obtaining a coagulum comprises a step for separating the coagulum and a waste liquid from each other. This method for producing a rubber wet master batch satisfies the following formula I.
a/b ≥ 65 (formula I)
(In formula I, a represents the COD value (mg/L) of the waste liquid; and b represents the content (mass%) of the rubber fraction in the mixed liquid.)
Inventors:
NISHIMURA CHIYA (JP)
Application Number:
PCT/JP2016/053966
Publication Date:
March 02, 2017
Filing Date:
February 10, 2016
Export Citation:
Assignee:
TOYO TIRE & RUBBER CO (JP)
International Classes:
B60C1/00; C08J3/22; C08C1/04; C08C1/14; C08K3/04; C08L7/00
Domestic Patent References:
| WO2010074245A1 | 2010-07-01 |
Foreign References:
| JP2014218601A | 2014-11-20 | |||
| JP2014234389A | 2014-12-15 | |||
| JP2015044952A | 2015-03-12 | |||
| JP2015048416A | 2015-03-16 | |||
| JP2007146114A | 2007-06-14 | |||
| JP2012520909A | 2012-09-10 |
Attorney, Agent or Firm:
UNIUS PATENT ATTORNEYS OFFICE (JP)
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