ZS Elastomer Co., Ltd_Sumitomo Chemical and Zeon Corporation the establishment of a joint-venture companyregarding the integration of their Solution Styrene Butadiene Rubber (“S-SBR") businesses

2 December 2016

ABOUT SUMITOMO CHEMICAL

ABOUT ZEON CORPORATION

DETAILS

Sumitomo Chemical

announced that its Board of Directors

has resolved today to enter into an agreement with

Zeon Corporation (“Zeon”)

for the establishment of a joint-venture company

between the two companies regarding

the integration of their

Solution Styrene Butadiene Rubber (“S-SBR") businesses.

Outline of the joint-venture company (Scheduled)

(Status of the Succeeding Company

 after the Company Split)

Company name : ZS Elastomer Co., Ltd.

Share holders    : Zeon Corporation: 60%;

                          Sumitomo Chemical Co., Ltd.: 40%

Business Scopes: Buying, selling, research and developing,

                          manufacturing,

                          and processing of synthetic rubbers

Address :            1-6-2 Marunouchi, Chiyoda-ku,

                          Tokyo 100-8246, Japan

Established date :December 8, 2016 (Scheduled)

Capital               :JPY 450 million

Fiscal year end   :March 31

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