Aqueous biodegradable-resin dispersion, production method therefor, and food-packaging paper obtained using aqueous biodegradable-resin dispersion
AssigneeMiyoshi Oil & Fat Co., Ltd.
InventorsYuma Kogure, Sho Suzuki
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Abstract
Provided are: an aqueous biodegradable-resin dispersion in which the biodegradable resin has stable dispersibility and retains intact biodegradability and which can improve the heat sealability of paper products, etc.; and a method for producing the aqueous biodegradable-resin dispersion. The aqueous biodegradable-resin dispersion according to the present invention contains a biodegradable resin and an anionic compound, a 1 wt. % aqueous solution of the anionic compound having a pH of 7 or greater.
Claims12
An aqueous biodegradable-resin dispersion comprising:
- a biodegradable resin and an anionic compound, wherein the anionic compound exhibits a pH of 7 or greater in a 1 wt. % aqueous solution of the anionic compound, and wherein the anionic compound is at least one selected from a sodium tetradecene sulfonate;
- sodium polyphosphate;
- carboxymethylcellulose sodium;
- and sodium polyacrylate.
A method for producing an aqueous biodegradable-resin dispersion containing a biodegradable resin and an anionic compound, the method comprising a dispersing step of dispersing, into a solvent, at least the biodegradable resin and the anionic compound that are dissolved therein to obtain a dispersion liquid, wherein the anionic compound exhibits a pH of 7 or greater in a 1 wt. % aqueous solution of the anionic compound, the anionic compound is at least one selected from a sodium tetradecene sulfonate;
- sodium polyphosphate;
- carboxymethylcellulose sodium;
- and sodium polyacrylate, and wherein the dispersion liquid of the dispersing step has a pH of 4 to 9.
Dependencies are inferred from the claim text.