C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
204/91.53
C08F 2/46 (2006.01) C08F 283/02 (2006.01) C08F 299/04 (2006.01) C08G 63/668 (2006.01) C08J 3/28 (2006.01)
Patent
CA 1110198
Abstract of the Disclosure A process for preparing a cured copolyetherester elastomeric composition comprising following steps I and II: Step I: melt-extruding an uncured linear copolyetherester elastomeric composition of (A) and (B) to follow: (A) a linear copolyetherester elastomer composed of (A-1) a hard segment consisting of (i) an acid component of which the at least 70 mol % is an aromatic discarboxylic acid and (ii) a diol componont having an average molecular weight of up to 350 and (A-2) a soft segment consisting of (iii) a polyalkelene glycol having an average molecular weight of from 500 to 5,000 in an amount of from 10 to 80% by weight based on the elastomer (A); and (B) a compound having an unsaturated aliphatic moiety other than unsaturated conjugated moieties, said compound (B) being copoly- merized or blended with said elastomer (A), wherein said unsaturated aliphatic moiety is chemically inert at the melt-extruding temperature, the amount of said moiety being 0.001 to 0.5 equivalent per 100 grams of said elastomer (A) Step II: curing the resulting extrudate by irradiation of actinic light.
322516
Horike Akihiro
Inata Hiroo
Morinaga Tsuto
Ogasawara Makoto
Smart & Biggar
Teijin Limited
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