Title:
EXPANDABLE RUBBER COMPOSITION AND MANUFACTURING METHOD THEREOF, RUBBER SPONGE AND MANUFACTURING METHOD THEREOF, AND WOUND BODY
Document Type and Number:
Japanese Patent JP2020200412
Kind Code:
A
Abstract:
To provide a rubber sponge with high uniformity in an elastic modulus.SOLUTION: An expandable rubber composition contains a synthetic rubber and a foaming agent. A moisture content in the expandable rubber composition is 120 mass ppm or less on the basis of the mass of the expandable rubber composition. A rubber sponge 1 includes a foam part containing a cured synthetic rubber. A density of the rubber sponge 1 is 0.01 to 0.6 g/mL. In the rubber sponge 1, a relative standard deviation of an indentation elastic modulus is 20% or less.SELECTED DRAWING: Figure 1
Inventors:
OBA NAOTO
NAKANO SADAYUKI
NAKANO SADAYUKI
Application Number:
JP2019109312A
Publication Date:
December 17, 2020
Filing Date:
June 12, 2019
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C08J9/04
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshinori Shimizu
Takashi Mikami
Hideki Okita
Yoshinori Shimizu
Takashi Mikami
Hideki Okita