| 摘要 |
PROBLEM TO BE SOLVED: To obtain a release paper capable of preventing permeation of a releasing agent due to excellent barrier properties, having excellent releasability by preparing a composition obtained by mixing a carboxy group-containing polyvinyl alcohol-based resin having a specific viscosity with a prescribed polyoxyalkylene glycol. SOLUTION: A polyvinyl alcohol-based resin having 0.1-10 mol% carboxy group content, 1-40 mPa.s viscosity of 10 wt.% aqueous solution at 2.5×10<5> sec<-1> shear rate at 40 deg.C in an amount of 100 pts.wt. is mixed with 0.1-10 pts.wt. of a polyoxyalkylene glycol having >=200, preferably 300-5,000 degree of condensation of an oxyalkylene group such as a polyethylene glycol to prepare a composition. A base paper such as (semi)glassine paper etc., is coated with a coating solution having 0.1-20 wt.% of the composition and provided with a layer of a releasing agent such as a silicone-based resin, etc., to give the objective release paper.
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