PVA MANUFACTURER---LIWEI CHEMICAL CO. LTD

PVA 117 & PVA 217

        Polyvinyl alcohol (abbreviated as PVA) is a kind of water-soluble resin produced by polymerization and alcoholysis of vinyl acetate. Due to its unique features of high cohesiveness, membrane tenacity, smoothness, solvent resistance, gas inhibitor, wear resistance, protective colloid, and waterproof after specially treated, polyvinyl alcohol is widely applied in textile, building, papermaking, packing, timber processing, agriculture, printing, polymer chemical, ceramic, iron and steel, electronic, electrolytic, electroplating and other industries.
        Liwei PVA can produce PVA 1799 to replace Kuraray PVA 117, and PVA 1788 to replace Kuraray PVA 217.

1. PVA 117 & PVA 217 specification:
PVA 117 is Fully Hydrolysed, equal to PVA 1799 in Liwei PVA

PVA 117

Viscosity mpa.s:

25.0 - 31.0

Hydrolysis mol.-%:

98.0 - 99.0

Ash(%) max:

0.4

Volatiles(%) max

5.0

PH value

5-7


PVA 217 is Partially Hydrolysed, equal to PVA 1788 in Liwei PVA

PVA 217

Viscosity mpa.s:

20.5 - 24.5

Hydrolysis mol.-%:

87.0 - 89.0

Ash(%) max:

0.4

Volatiles(%) max

5.0

PH value

5-7



2. PVA 117 & PVA 217 Application:
PVA 117 is chiefly used to produce textile sizing materials, coatings, adhesive and it is widely used for paper processing, emulsifying agents, dispersants and blocking colloids. Besides, it can be employed as membranes, soil modifiers,and production materials of vinylon fiber.etc.

PVA 217 is chiefly used for coatings, adhesive, dispersing agents, emulgents, textile sizing materials, sensitize coatings and so forth.