Polyvinyl Alcohol Shuangxin Sandy Wanwei 1788 2488 2688
The physical properties of polyvinyl alcohol are affected by the chemical structure, degree of alcoholysis, and degree of polymerization. The main structure in the polyvinyl alcohol molecule is 1,3-propanediol, which is the "head and tail" structure. The degree of polymerization of polyvinyl alcohol is divided into ultra-high degree of polymerization (molecular weight 250,000 to 300,000), high degree of polymerization (molecular weight 170,000 to 220,000), medium degree of polymerization (molecular weight 120,000 to 150,000) and low degree of polymerization (molecular weight 25,000 to 35,000). ). There are generally three types of alcoholysis degrees: 78%, 88%, and 98%. The alcoholysis degree of partial alcoholysis is usually 87% to 89%, and the alcoholysis degree of complete alcoholysis is 98% to 100%. The thousand and hundreds digits of the average degree of polymerization are often placed in front, and the percentage of alcoholysis degree is placed in the back. For example, 17-88 means that the degree of polymerization is 1700 and the degree of alcoholysis is 88%. Generally speaking, as the degree of polymerization increases, the viscosity of the aqueous solution increases, and the strength and solvent resistance after film formation increase, but the solubility in water and the elongation after film formation decrease.
Polyvinyl alcohol (PVA) Unique performance
● Wear resistance ● Oil resistance ● Special treatment to make it water resistance ● Protective colloid
● Film toughness ● Strong adhesion ● Smoothness ● Environmental friendly, biodegradable Resin
Polyvinyl alcohol (PVA) 2488
| Items | Specification |
| Hydrolysis degree | 87.0%- 89.0% |
| Purity | ≥93.5% |
| Viscosity | 45.0-58.0mpa.s |
| Volatile | ≤5.0% |
| PH | 5~7 |
| Ash | ≤0.5% |
Polyvinyl alcohol (PVA) Application
Paper sizing agent
Warp sizing in textile
Adhesive
Raw material of polyvinyl alcohol panel and PVA thin film
Paint and Coatings
Medicine，cosmetic and functional materials
Emulgator and dispersing agent.
Polyvinyl alcohol (PVA) 2699
| Old Standard Grades Name | New Standard Grades Name | Item |
| Hydrolysis (mol%) | Viscosity (mpa.s) | Volatile (%≤) | Ash (%≤) | PH (Value) | Purity (% ≥) |
| 26-99 | 100-70 | 99.0-100 | 78.0-85.0 | ≤5.0 | ≤0.7 | 5~7 | ≥93.5 |
Polyvinyl alcohol (PVA) Application
(1) Adhesive industry: paper, paper tube bonding.
(2) Construction industry: acetalated products are used for building glue, interior and exterior wall coatings, adhesives.
(3) Ceramic industry: aluminum ball binder, ceramic binder, etc.
(4)Stabilizer industry: stabilizer for vinyl acetate emulsion polymerization and urea-formaldehyde adhesive viscosification .
Polyvinyl alcohol (PVA) Partial Alcoholysis Grade Series Products
Specific brand number PVA 100-27 (1799), PVA 100-78 (2699), PVA 088-20 (1788), PVA 088-35 (2088)
PVA 088-50 (2488), PVA 098-05 (0599), PVA 088-60 (2688), PVA 088-05 (0588)
Polyvinyl alcohol (PVA) Packaging and storage:
25kg/ kraft bag, 18mt/20'GP, 28mt/40'GP; below 30 ºC, cool, dry and Sun care.
Other brand PVA Resin , such as SUNDY PVA, SINOPEC PVA, Wanwei PVA can be supplied on request. We also supply Titanium Dioxide Rutile,Titanium Dioxide Anatase,Iron Oxide Pigments,Carbon Black N330,Sodium Tripolyphosphate 94%, Sodium Hexametaphosphate 68%,Pvc Resin, PVC Paste Resin,Bottle Grade Pet Resin ,Chrome Oxide
Product Categories : Resin > PVA Resin
Other brand PVA Resin , such as SUNDY PVA, SINOPEC PVA, Wanwei PVA can be supplied on request. We also supply 
