product

Polyvinyl alcohol 17-88

Organic compounds, white granule
Properties: melting point: 230 ℃, glass transition temperature : 75-85 ℃. Soluble in water, in order to completely dissolved generally need to be heated to 65-75 ℃. Insoluble in gasoline, kerosene, vegetable oil, benzene, methanol, etc., slightly soluble in dimethyl sulfoxide. It appears blue when meet with the iodine, which is similar to the starch, but the polyvinyl alcohol is not moldy and will not be destroyed by the bacteria. Therefore, water dissolution is the best method rather than amylase used to desize when polyvinyl alcohol is desized.
Application: mainly used for sizing of dacron or dacron/cotton, which possesses good adhesion and film-forming ability.