Title:
RUBBER COMPOSITION AND METHOD FOR MANUFACTURING RUBBER COMPOSITION
Document Type and Number:
Japanese Patent JP2020037686
Kind Code:
A
Abstract:
To provide a rubber composition including an ethylene/α-olefin/non-conjugated polyene copolymer having excellent self-collecting properties while exhibiting a comparatively low dynamic-to-static modulus ratio.SOLUTION: There is disclosed a rubber composition including a rubber constituent containing an ethylene/α-olefin/non-conjugated polyene copolymer. An intrinsic viscosity [η] of the ethylene/α-olefin/non-conjugated polyene copolymer is 2.8-5.0 dl/g. The intrinsic viscosity [η] is a value measured in tetralin at 135°C. When the rubber composition is placed on a grid having a plurality of square holes of 18.8 mm×18.8 mm arranged along a longitudinal direction and a lateral direction vertical to the longitudinal direction, an entire mass W0 of the rubber composition and a mass W1 of the rubber composition remaining on the grid without passing through the grid satisfy the following equation: W1/W0≥0.92.SELECTED DRAWING: Figure 5
Inventors:
OBA NAOTO
TAKEZAWA TETSUJI
NAKANO SADAYUKI
TAKEZAWA TETSUJI
NAKANO SADAYUKI
Application Number:
JP2019155907A
Publication Date:
March 12, 2020
Filing Date:
August 28, 2019
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C08L23/08; C08J3/20; C08K3/30; C08K5/14
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshinori Shimizu
Takashi Mikami
Hideki Okita
Yoshinori Shimizu
Takashi Mikami
Hideki Okita