Production of heat-resistant olefin copolymer

Abstract

Abstract PURPOSE:To obtain the titled copolymer as a heat-resistant rubber low cost, by condensation reaction between a hydroethyl group-contg. polysiloxane and a copolymer prepared by copolymerization between ethylene, alpha-olefin, etc. and specific silane compound followed by termination of the polymerization with an alcohol. CONSTITUTION:First, an ethylene-alpha-olefin-alkoxysilane compound-(non-conju gated diene) copolymer is prepared by copolymerization, using a Ziegler-Natta catalyst, between (A) ethylene, (B) an alpha-olefin and/or non-conjugated diene and (C) a silane compound of formula I (n is integer >=1; X is Cl or Br; R<1> is H or 1-5C alkyl) and/or a second silane compound of formula II (Cl is integer 0-2; k is integer 0-6; R<2>-R<4> are each H or 1-5C alkyl) followed by termination f the polymerization with a 1-10C-alcohol. Thence, 100pts.wt. of this copolymer is blended with 2-50pts.wt. of a hydroxyl group-contg. polysiloxane followed by condensation reaction, thus obtaining the objective copolymer.

Inventors

• 👤 Takashi Kawada
• 👤 隆 川田
• 👤 Masahiro Hikita
• 👤 引田　正浩
• 👤 Kenya Makino
• 👤 健哉 牧野

Bibliographic Details