Poly(oxy-p-phenylenesulfonyl-4,4'-biphenylylenesulfonyl-p-phenylene)(8CI); 4,4'-Bis[(4-chlorophenyl)sulfonyl]biphenyl-4,4'-bis[(4-hydroxyphenyl)sulfonyl]biphenylcopolymer sru; Astrel 360; Biphenyl-diphenyl ether 4,4'-disulfonyl chloridepolymer, SRU
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