Polyvinyl Alcohol (PVA)

详情

Polyvinyl Alcohol (PVA): Characteristics and usage: The various types of polyvinyl alcohol resin are generated by alcoholysis reaction of polyvinyl acetate that is polymerized from vinyl acetate. Its polymerization degree is between *5% and *9.9% in the shape of follcule, granular and powder, PVAL of more than *9.5% alcoholysis degree can be dissolved in hot water of *5?? , *8%2 can be dissolved in normal temperature water. Aqueous PVAL has good spinnability, film-forming properties, bindablility and emulsibility. It is mainly used for producing synthetic fibre, plastic, bonding agent and also for textile sizing, paper-making, process leather, building, dispersion agent for making PVC etc. Specification of Polyvinyl alcohol PVA Type Alcoholysis Degree% (mol/mol) Sodium Acetate% MAX Volatile % MAX Ash % MAX PH Value Viscosity (cps.) ***9 *8.****0 3 5 0.7 ***7 **6 ****9 *9.****0 2.5 5 0.5 ***7 ****8 / ****2/ ****8 ****9 *9.****0 2.5 5 0.5 ***7 ****2/ ****8 ****9 *9.****0 2.5 5 0.5 ***7 ****2/ ****6 ****9 *9.****0 2.5 5 0.5 ***7 ****0 ****2 *0.***4.0 2.5 5 0.5 ***7 ****8/ ****2 ****8 *8.***9.0 2.5 5 0.5 ***7 ****8/ ****2 ****8 *6.***0.0 2.5 5 0.5 ***7 ****8 ****8 *6.***0.0 2.5 5 0.5 ***7 ****2/ ****0 ****8 *6.***0.0 2.5 5 0.5 ***7 ****5 ****8 Packing: in *5kgs paper bag or **0kgs/**0/**0kgs big bag on pallets. Looking forward to hearing from you soon.