Schlichtemittel für Glasfasern.

摘要

A sizing agent according to the present invention contains as the essential component a high molecular compound having an weight-average molecular weight of not less than 20,000 prepared by reacting (A) a polyhydroxy compound having an weight-average molecular weight of not less than 1,000, which is prepared by an addition polymerization of ethylene oxide or alkylene oxides comprising ethylene oxide to an organic compound having two active hydrogens , with (B) a polycarboxylic acid, a polycarboxylic acid anhydride or a lower ester of a polycarboxylic acid. e