Ethylene α-olefin/unconjugated polyene random copolymer rubber containing hydrolyzable silyl group and process for producing the same
AssigneesShin-Etsu Chemical Co., Ltd., Mitsi Chemicals, Inc.
InventorsTsutomu Nakamura, Takeo Yoshida, Akira Yamamoto, Takashi Hakuta, Yoshiharu Kikuchi, Masaaki Kawasaki
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Abstract
The invention provides an ethylene-α-olefin-unconjugated polyene random copolymer rubber having hydrolyzable silyl groups in the molecule, which is crosslinkable with air-borne moisture at room temperature and is not only useful for resin modification, but also applicable as elastic sealants and adhesives, and a method for preparing the same.
Claims10
An ethylene-α-olefin-unconjugated polyene random copolymer rubber characterized by containing in a molecule hydrolyzable silyl groups represented by the following general formula (1):
- wherein R is a monovalent hydrocarbon group of 1 to 12 carbon atoms, X is a hydrolyzable group selected from the group consisting of hydride, halogen, alkoxy, acyloxy, ketoxymate, amide, acid amide, and aminoxy groups, and the letter “a” is an integer of 0, 1 or 2, and obtained by subjecting an ethylene-α-olefin-unconjugated polyene random copolymer rubber to hydrosilylation reaction in the presence of a catalyst in the form of a transition metal complex with a silicon compound of the following general formula (2):
- H—SiRaX3−a (2)
- wherein R, X and Letter “a” are as defined above, thereby adding the SiH group of said silicon compound to a double bond in said copolymer.
Dependencies are inferred from the claim text.