Overview
Modified polyvinyl alcohol (PVOH) is graded according to different degrees of polymerization, hydrolysis and copolymerization monomers.
The modification of PVA is mainly to use the double bonds, ester groups and the chemical activity of the hydroxyl group after alcoholization of vinyl acetate to change the side chain group or structure, and introduce other monomers to become copolymers dominated by PVA.
General properties
PVOH 823G is a partially alcoholized medium molecular weight polyvinyl alcohol, a high quality product with ultra-high purity and ultra-low ash content.
Applications
823G can be used in adhesives, cosmetics, emulsion polymerization, oil well cementing, paper industry, etc.
Especially suitable for the inkjet industry.
Possible applications: Coatings industry, photosensitive coatings, plant protective covers, PVA sponges, strippable protective coatings.
Package
Packed in 25 kg paper bags。
Storage
PVOH 823G should be stored away from moisture and open flame.
PVOH 823G should be used up within 12 months of delivery. It can still be used after storage for 12 months or more, but it is recommended to test before use.
PVOH 823G aqueous solution may become moldy or contaminated by bacteria if it is stored in high temperature and high humidity for a long time.
Technical Data
| Appearance | Nearly white spherical particle |
| Solid content(min)w/w% |
98.5
|
|
Alcoholysis (mole%)
|
85.0±2.5
|
| Viscosity @20℃, 4% aqueous solution |
23.0±1.5
|
| PH |
5.0-7.0
|
| Ash content (Na2O) max% |
≤0.2
|
Overview Modified polyvinyl alcohol (PVOH) is graded according to different degrees of polymerization, hydrolysis and copolymerization monomers. The modification of PVA is mainly to use the double bonds, ester groups and the chemical activity of the hydroxyl group after alcoholization of vinyl acetate to change the side chain group or structure, and introduce other monomers to become copolymers dominated by PVA.
Overview Modified polyvinyl alcohol (PVOH) is graded according to different degrees of polymerization, hydrolysis and copolymerization monomers. The modification of PVA is mainly to use the double bonds, ester groups and the chemical activity of the hydroxyl group after alcoholization of vinyl acetate to change the side chain group or structure, and introduce other monomers to become copolymers dominated by PVA.
Overview Modified polyvinyl alcohol (PVOH) is graded according to different degrees of polymerization, hydrolysis and copolymerization monomers. The modification of PVA is mainly to use the double bonds, ester groups and the chemical activity of the hydroxyl group after alcoholization of vinyl acetate to change the side chain group or structure, and introduce other monomers to become copolymers dominated by PVA.
Overview Modified polyvinyl alcohol (PVOH) is graded according to different degrees of polymerization, hydrolysis and copolymerization monomers. The modification of PVA is mainly to use the double bonds, ester groups and the chemical activity of the hydroxyl group after alcoholization of vinyl acetate to change the side chain group or structure, and introduce other monomers to become copolymers dominated by PVA.
IPv6 network supported