Title:
重合体の製造方法
Document Type and Number:
Japanese Patent JP6828957
Kind Code:
B2
Abstract:
A method for producing a polymer according to the present invention is a method for producing a polymer having at least two peaks in a molecular weight distribution curve of the polymer obtained by measurement of molecular weight by GPC, and comprising a conjugated diene-based polymer or a copolymer of an aromatic vinyl compound and a diene-based compound, the method using a reaction apparatus comprising two or more continuous polymerization reactors connected in series, and comprising introducing a monomer component and a polymerization initiator into a first reactor for a polymerization reaction, and then adding the monomer component and the polymerization initiator before each of the second and subsequent reactors for polymerization, a weight average molecular weight of a polymer (A) obtained in the first reactor being 300,000 to 2,000,000.
Inventors:
Kenji Nakatani
Application Number:
JP2016135495A
Publication Date:
February 10, 2021
Filing Date:
July 07, 2016
Export Citation:
Assignee:
Bridgestone Corporation
International Classes:
C08F2/00; C08F36/04
Domestic Patent References:
| JP55040712A | ||||
| JP57180615A | ||||
| JP2007254599A | ||||
| JP7233228A | ||||
| JP2001011127A |
Foreign References:
| WO2005087858A1 | ||||
| WO2016158084A1 |
Attorney, Agent or Firm:
Tamotsu Otani
Kenichi Hirasawa
Yoshio Takizawa
Kenichi Hirasawa
Yoshio Takizawa