Abstract: The present invention relates to a film-shape soap comprising (a) a water soluble polymer and (b) a soap; said water soluble polymer is a polyester of polyether polyol having an average molecular weight of more than about 1,000 and a polycarboxylic acid, and has a weight average molecular weight of not less than about 20,000, which has a rapid soluble time in water in spite of a lower equilibrium moisture content, excellent washability, little stimulation to a skin, flexible (not brittle) and stable properties, and is suitable for a portable type toilet soap, disposable soap and the like.

Abstract: The 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.