polyvinyl alcohol

【English name】:polyvinyl alcohol,viny)alcohol polymer,poval, CAS 9002-89-5 【Physical and Chemical Properties】: Appearance is white flaky, flocculent or powder form, is a fairly extensive use of water-soluble polymers, plastics and rubber between the performance between the tasteless, its use can be divided into fibers and non-fiber two purposes. 【Solubility】:soluble in water, in order to be heated to dissolve completely normal 65 ~ 75 ℃.

Do not dissolve in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol and so on. Slightly soluble in DMSO. 120 ~ l50 ℃ soluble glycerol.

However, a jelly when cooled to room temperature. 【Solubility】:soluble in water, in order to be heated to dissolve completely normal 65 ~ 75 ℃. Do not dissolve in gasoline, kerosene, vegetable oil, benzene, toluene, dichloroethane, carbon tetrachloride, acetone, ethyl acetate, methanol, ethylene glycol and so on. Slightly soluble in DMSO.

120 ~ l50 ℃ soluble glycerol. However, a jelly when cooled to room temperature. 【Product performance】:polyvinyl alcohol resin product is white solid, the outlook points flocculent, granular, powder three; non-toxic, tasteless, non-polluting, can be 80 - 90 ℃ dissolved.

The solution has good adhesion and film; ability oils, lubricants and hydrocarbons such as most organic solvents; with a long chain polyol ester, ether, acetal and other chemical properties. 【Effection and purpose】: mainly used in the textile industry, warp, fabric finishing agents, vinylon fiber material; construction and decoration industry, 107 glue, interior and exterior paints, adhesives; the chemical industry as a polymeric emulsifier, dispersant and polyethylene Alcohol Formaldehyde, acetal, butyral resin; paper industry as paper adhesives; agriculture for soil amendments, pesticides, synergists, and polyvinyl alcohol film adhesion; can be used for cosmetics and aspects of high-frequency hardening agent. 【Defoamer added】: Throughout the preparation of aqueous solution, easy blistering of the goods, but in high concentration, speed fast, it will also produce a small amount of foam in order to contain the bubble, add defoamer 0.01-0.05% (in PVA as the base) and octanol, or 0.2-0.5% TBP (in PVA as the base) of the silicone emulsion.