英文名称: | 2-ethanediyl), .alpha.,.alpha.'-1,4-butanediylbis[.omega.-hydroxy-Poly(oxy-1 | alpha, alpha'-1,4-butanediylbis[ omega -hydroxy-poly(oxy-2-ethanediyl) | alpha,alpha'-1,4-butanediylbis[ omega -hydroxy-poly(oxy-2-ethanediyl) | Poly(oxy-1,2-ethanediyl),.alpha.,.alpha.'-1,4-butanediylbis[.omega.-hydroxy- |
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