Title:
METHOD FOR PRODUCING MODIFIED SOLUTION-POLYMERIZED DIENE RUBBER TO BE BLENDED WITH SILICA, AND RUBBER COMPOSITION CONTAINING SAME
Document Type and Number:
WIPO Patent Application WO/2017/046963
Kind Code:
A1
Abstract:
Studies have been made for the purpose of achieving both the improvement in the storage stability of a solution-polymerized diene rubber that is modified with an alkoxysilane compound and the improvement in the physical properties of the diene rubber when blended with silica. Thus, a production method whereby it becomes possible to produce a modified solution-polymerized diene rubber having good storage stability and high reactivity with silica is developed, by introducing several-tens percent of a triantennary or tetraantennary component that has been coupled with a tin compound into a modified solution-polymerized diene rubber, then coagulating the resultant alkoxysilane-modified diene rubber with steam and then drying the coagulated product. In addition, the physical properties of the rubber are further improved successfully by introducing a highly reactive structure to a polymerization initiation terminal of the rubber in the polymerization of the rubber using an alkyl lithium as a polymerization initiator.
Inventors:
HATTORI IWAKAZU (JP)
ONO HISAO (JP)
ONO HISAO (JP)
Application Number:
PCT/JP2015/076805
Publication Date:
March 23, 2017
Filing Date:
September 18, 2015
Export Citation:
Assignee:
ETIC INC (JP)
International Classes:
C08F8/42; C08C2/06; C08F8/12; C08K3/04; C08K3/36; C08L15/00
Domestic Patent References:
| WO2008029814A1 | 2008-03-13 |
Foreign References:
| JP2004018795A | 2004-01-22 | |||
| JP2009287018A | 2009-12-10 | |||
| JP2000281835A | 2000-10-10 |
Other References:
See also references of EP 3351569A4
Attorney, Agent or Firm:
KUZUWA, Kiyoshi (JP)
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