Method for producing vinyl alcohol resin
AssigneeThe Nippon Synthetic Chemical Industry Co., Ltd.
InventorsKeisuke FUJIMURA, Osamu Hommura, Yasufumi Beniya, Satoshi Matsunuma
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Abstract
A method of producing a vinyl alcohol resin having a water content of not higher than 10 wt % by performing a multistage dewatering process by means of a kneading machine. The method permits efficient dewatering of a highly hydrous vinyl alcohol resin to ensure easy production of a lower water content vinyl alcohol resin having a water content of not higher than 10 wt %, thereby reducing production costs.
Claims12
A vinyl alcohol resin production method comprising the step of kneading and dewatering a hydrous vinyl alcohol resin in a kneading machine, wherein the kneading and dewatering step includes the step of passing the hydrous vinyl alcohol resin through a plurality of kneading areas for the dewatering to provide a vinyl alcohol resin having a water content of not higher than 10 wt %.
Dependencies are inferred from the claim text.