1、 Introduction:

Synthetic water soluble polymer

2、 Main performance indexes

Degree of polymerization, alcoholysis, etc

3、 Production process

Polyvinyl acetate is polymerized in solution to produce polyvinyl acetate, and then it is alcoholized to produce polyvinyl alcohol.

At first, it was used as the raw material of Vigny fiber, and then its application was expanded.

4、 Main performance:

1. Physical properties: particles or powder, white or yellowish

2. Pure PVA is safe and non-toxic. It can be used as processing resin in food packaging, cosmetics and medicine. It is completely harmless in contact with skin. Sinopec has reach

3. Solubility: it is easy to dissolve in water, and the dissolution speed is accelerated with the increase of water temperature. It is difficult to dissolve in organic solvents, animal and vegetable oils and fats.

The water solubility of PVA varies with alcoholysis degree.

4. Adhesiveness: PVA aqueous solution is colorless and transparent, and completely alcoholized PVA has good adhesiveness with hydrophilic cellulose, such as porous materials of wood and paper. The adhesion of PVA is related to alcoholysis degree and polymerization degree, and the adhesion strength increases with the increase of alcoholysis degree and polymerization degree (viscosity).

5. Film forming property: PVA is easy to mold, the ink formed is colorless and transparent, with good mechanical strength, the surface is bright and clean without stickiness, good solvent resistance, good light transmittance, no electricity, no dust absorption, and good printability.