METHOD OF PRODUCING MOTHER BATCH BASED ON DIENE ELASTOMER AND SILICA Russian patent published in 2017 - IPC B60C1/00 C08J3/215 C08J3/22 C08L21/02 C08K3/08 C08K3/36 

Abstract RU 2609161 C2

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing a master batch of diene elastomer and silica, as well as to use of said master batch in production of compositions based on diene rubber, reinforced with inorganic filler, meant for making tyres or intermediate products for tyres, in particular treads for said tyres. Method includes following steps: preparation of at least one silica dispersion in water, bringing into contact and mixing latex elastomer and aqueous dispersion of silica in presence of calcium salt to produce coagulate, extraction of coagulate, drying extracted coagulate to obtain a master batch. Molar content of calcium cations, defined as number of moles of calcium cations of calcium salt per unit surface area of silica, ranges from 1.19×10-6 to 2.81×10-6 mol/m2.

EFFECT: method enables to achieve good level of output product with simultaneous monitoring of content of filler, added in advance, and good dispersion of filler in elastomer matrix.

18 cl, 1 tbl

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RU 2 609 161 C2

Authors

De Godemari Benua

Laffarg Zheraldin

Berrio Zhyulen

Dates

2017-01-30Published

2012-10-10Filed