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Product name: PVA,polyvinyl alcohol,vinol,
PRODUCT DESCRIPTION
PVA resin is a kind of heavy polymer. It is white or light yellow floc, Granular or powdery inappearance. Its molecular formula is[CH2CHOHn,and the molecular formula for someof the PVA is [CH2CHOH]n[CH2CHOOCCH3]m. PVA is non-toxic, insipid and harmless.PVA is water-soluble and the solvent provide good viscosity and film building. It can withstandoils,lubricants,hydrocarbons and most other organic so-lvents.PVA has better chemical stabilityand insulatibility, and provide ease in firm building; It possess the typical chemical propertiesof polyols and can carry out process of esterification, etherealization, aceatalization etc.
PRODUCT APPLICATION
In textile industry, PVOH is mainly used as a warp dressing agent, textile finishing agentand the raw material of vinylon; in construction and upholstery industry 107 glue,it's used as an additive of cement and mortar, inner and outer wall paints, and mouldingboard binder;and in chemical industry,it's used as a polymer emulsifying agent,dispersingagent and used to produce PVOH formal,PVOH acetal and PVOH butyral. It's used as anadhesive in lumbering and paper-making industries, used as a soil improving agent,pesticide reinforcing agent and PVOH thin film in agriculture, and used as a well-fixingagent in petroleum exploitation. It can also be used into cosmetic, medicine, printing,ceramics, steel-making, electronics and plating
Notice:
Partially hydrolyzed grades can be easily dissolve in cold water, so it should be cared that large and hard lumps are likely tobe formed when charging PVA into the water.1.The water temperature should be lower than 25 when charging PVA.2.The charging speed of PVA should be as slow as possible3. After the charging, the slurry should be continuously stirred for about 10 - 15 minutes without raising the temperature immediately, in order to disperse the particles efficiently.4.The water temperature should be raised to about 95, to shorten the dissolving time. The lower degree of polymerization is, the lower water temperature is acceptable for making solution.
Polyvinyl alcohol vinol