Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1141/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :27/03/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : PROCESS FOR PRODUCING MODIFIED CONJUGATED DIENE-BASED POLYMER,
MODIFIED CONJUGATED DIENE-BASED POLYMER, AND POLYMER COMPOSITION
(51) International classification
:C08C, (71)Name of Applicant :
C08F 1)SUMITOMO CHEMICAL COMPANY, LIMITED
(31) Priority Document No
:2011- Address of Applicant :27-1, SHINKAWA 2-CHOME,
078767 CHUO-KU, TOKYO 104-8260 Japan
(32) Priority Date :31/03/2011 (72)Name of Inventor :
(33) Name of priority country :Japan 1)ITO, MANA
(86) International Application No
Filing Date
:NA
:NA
(87) International Publication No : NA
(61) Patent of Addition to Application Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(57) Abstract :
An object of the present invention is to provide a process for producing a modified conjugated diene-based polymer suitable for
preparing a polymer composition excellent in the fuel cost saving effect. The present invention provides a process for producing a
modified conjugated diene-based polymer, comprising reacting a conjugated diene-based polymer having a monomer unit based
on a conjugated diene compound and a monomer unit based on a compound represented by the following formula (l), with an
organometallic compound, and reacting the resulting reaction product with a hydrocarbyloxysilane compound: wherein R11, R12,
R13, R14 and R15 each represent a hydrogen atom or an alkyl group, at least one of R11, R12, R13, R14 and R15 is an alkyl
group, R16, R and R18 each represent a hydrogen atom or a hydrocarbyl group, R19 represents a hydrocarbylene group, and k
represents 0 or 1.
No. of Pages : 98 No. of Claims : 7
The Patent Office Journal 21/06/2013 13678