Polyvinyl Alcohol 1799
Catalog Number Q245 Definition (-CH2CHOH-)n
Polyvinyl Alcohol, also know as PVA, is a water soluble synthetic polymer made by alcoholysis of polyvinyl acetate.
The properties depend on the degree of polymerization and the percentage of alcoholysis, both of which are controllable in processing. Water solubility increases as molecular weight decreases; strength, elongation, tear resistance, and flexibility improve with increasing molecular weight.
PVA has high impermeability to gases, is unaffected by oils, greases and petroleum hydrocarbons. However, it it attacked by acids and alkalies
CAS Number 9002-89-5 Application PVA can be use in textile warp and yarn size, laminating adhesives, molding powders, binder for cosmetic preparations, ceramics, leather, cloth, non-woven fabrics and paper, paper coatings, greasproofing paper, emulsifying agent, thickener and stabilizer, photosensitive films, cements and mortars, intermediate for other polyvinyls, imitation sponges, printing inks (glass), etc... Technical Data
Alcoholysis Rate (mol%) 99.8 - 100 Volatiles (wt%) max. 8.0 Viscosity mpa.s 22.0 - 28.0 Ash (wt%) max. 0.7 Sodium Acetate (wt%) max. 2.1 pH min 10 Purity (wt%) min. 90.5 Packaging & Handling Packed in 25 Kg net bags. 17MT per 20' FCL.
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