Polyvinyl alcohol

Brief Description
CAS No.: CAS 9002-89-5 Other Names: vinylalcohol polymer/poval MF: [C2H4O]n
EINECS No.: CN0:095 Place of Origin: Guangdong China (Mainland) Type: Auxiliaries and Other Medicinal Chemicals
Grade Standard: Medicine Grade Model Number: CN0:095 Purity: 1788granule
Specifications
Polyvinyl alcohol

Solubility PVA soluble in water, PVA easy film, And of the hydrophilic cellulose has very good sticky relay.

[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 °C. 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 °C 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 °C. 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 °C 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 °C 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] 

Product use: mainly used in textile industry warp size, textile finishing agent, WeiNiGuan fiber raw materials; The building and decoration industry 107 glue, the external walls of coatings, adhesives;

Chemical industry used as polymerization emulsifier, dispersant and poly (vinyl alcohol) shrink formaldehyde, shrink acetaldehyde, butyl aldehyde resin shrinkage; The paper industry used for paper adhesives;Agriculture used for soil improver, pesticide adhesion synergistic agent and poly (vinyl alcohol) film; Also can be used for daily cosmetics and high frequency quenching agent, etc.

 [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.