| 摘要 |
PURPOSE:To prevent the degradation in mechanical properties by forming a film from a compsn. comprising a carboxylic acid-modified polyvinyl alcohol and a polyethylene glycol having a specified range of mol.wt. CONSTITUTION:100 pts.wt. carboxylic acid-modified polyvinyl alcohol contg. 1-10mol% carboxyl groups is compounded with 20-50 pts.wt. polyethylene glycol having a mol.wt. of 400-1000, pref. 600-800, to give a compsn., which is formed into a film for packaging a detergent. The film is formed, e.g. by dissolving the acid-modified polyvinyl alcohol and the polyethylene glycol in three times as much hot water and casting the resulting aq. soln. |
