Title:
シクロペンテン開環共重合体、その製造方法およびゴム組成物
Document Type and Number:
Japanese Patent JP6390609
Kind Code:
B2
Abstract:
[Problem] To provide a cyclopentene ring-opening copolymer used in a rubber composition for tires having excellent wet grip performance and low heat buildup; and a method for producing the cyclopentene ring-opening copolymer. To further provide a rubber composition obtained by using the cyclopentene ring-opening copolymer. [Solution] This cyclopentene ring-opening copolymer comprises cyclopentene and a cyclic olefin containing an aromatic ring; the content of the aromatic ring with respect to the total weight of the copolymer is 10 to 40 wt%; and the weight average molecular weight (Mw) is 200,000 to 1,000,000. The cyclopentene ring-opening copolymer alternatively comprises cyclopentene and a norbornene compound; the weight ratio of cyclopentene-derived structural units to all repeating structural units in the copolymer is 40 to 90 wt%, and the weight ratio of norbornene compound-derived structural units is 10 to 60 wt%; and the weight average molecular weight (Mw) is 200,000 to 1,000,000.
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Inventors:
Kazue Tsunogae
Takeshi Sugimura
Takeshi Sugimura
Application Number:
JP2015502968A
Publication Date:
September 19, 2018
Filing Date:
February 26, 2014
Export Citation:
Assignee:
Zeon Corporation
International Classes:
C08G61/08; C08K3/36; C08L65/00
Domestic Patent References:
| JP53024400A | ||||
| JP51122187A | ||||
| JP50154399A | ||||
| JP2010155935A | ||||
| JP2011126966A | ||||
| JP54050599A | ||||
| JP51136800A | ||||
| JP4020553A | ||||
| JP53034890A |
Foreign References:
| WO2011087072A1 | ||||
| WO2010073382A1 |
Attorney, Agent or Firm:
Maeda/Suzuki International Patent Corporation