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|1. (WO2018181735) RELEASE-PAPER BASE PAPER AND METHOD FOR PRODUCING SAME, AND RELEASE PAPER|
|Applicants:||KURARAY CO., LTD.
|Title:||RELEASE-PAPER BASE PAPER AND METHOD FOR PRODUCING SAME, AND RELEASE PAPER|
A release-paper base paper obtained by coating a substrate with a coating agent which contains a modified polyvinyl alcohol (A) and sodium acetate, wherein: the modified polyvinyl alcohol (A) is water-soluble, has double bonds derived from an unsaturated carboxylic acid or a derivative (B) thereof in a side chain in the amount of at least 0.005 mol% and less than 10 mol%, and also has 1,2-glycol bonds in the amount of 1.4-2.0 mol%, inclusive; and the content of the sodium acetate relative to the modified polyvinyl alcohol (A) is 0.01-10 mass%, inclusive. This release-paper base paper exhibits excellent silicone void filling characteristics. In addition, the release-paper base paper can be used to accelerate the curing of the silicone in a release layer, and is capable of improving the adhesion between a substrate and a release layer.