Silica-base rubber composition for manufacture of road tires

Silica-base rubber composition for manufacture of road tires

  • CN 1,294,191 C
  • Filed: 05/26/1998
  • Issued: 01/10/2007
  • Est. Priority Date: 05/26/1997
  • Status: Active Grant
First Claim
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1. the preparation method of the sulfur cross-linking type rubber combination used of a road tires for preparing the rolling resistance with reduction, described rubber combination the method is characterized in that based at least a dienopolymer rubber, comprises the following steps:

  • A) in the following manner by precipitation, separation and the dry silicon-dioxide for preparing dispersibility;

    (i) participate at least a portion of silicate total amount of reaction and the bottom that at least a ionogen is positioned over initial container, described initial container bottom with SiO 2The expression silicate concentration 50 and 60g/l between, (ii) add souring agent, reach between 7 and 8.5 until the pH of reaction medium to described container bottom,(iii) in reaction medium, add souring agent, and optionally, add remaining silicate simultaneously,(iv) make the gained mixture carry out separating step, this step comprises by one and is equipped with the strainer of hold-down gear to filter and wash,(v) the dry-matter ratio is carried out drying less than the suspension of 17% weight by spraying;

    B) the above-mentioned silicon-dioxide that makes is carried out hot mechanical workout to constitute mixture in fs and dienopolymer rubber, this mixture then carries out hot mechanical workout of two steps with at least a coupling agent in subordinate phase.

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