Foley & Lardner, Schwartz, Jeffery, Schwaab, Mack, Blumenthal & Evans
Block-graft polymer and process for producing it
 Disclosed are a block-graft copolymer comprising a polymer block having a repetitive unit represented by General Formula: ##STR1## wherein A represents an organopolysiloxane chain, a polyalkylene oxide chain, a polyalkylene-imine chain, a polyacrylate chain or a polyacryloyl chain, and a process for producing the same. This block-graft copolymer can have various performances such as an oxygen enrichment performance, an ion concentration property, a capability of forming a complex with a metal salt and a biocompatibility, depending on the kind of graft polymer chains. 
Shin-Etsu Chemical Co., Ltd.
C C C C C C
C08F C08G C08F C08F C08G C08F
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Teruo Koichi Osamu Mikio
Fujimoto Ito Watanabe Shiono