PVA MANUFACTURER---LIWEI CHEMICAL CO. LTD

PVA BP 20 & PVA BF 20

        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 2088 can replace PVA BP 20, Liwei PVA 2099 can replace PVA BF 20.

1. PVA BP 20 & PVA BF 20 Specification:
Polyvinyl Alcohol PVA BP 20

Appearance:

White crystalline powder

Viscosity (mp.s)

28-40

Alcoholysis Degree %(mol/ mol)

86.0-90.0

Volatile (%) ≤

5

Sodium Acetate (%) ≤

2.5

Ash (%) ≤

0.7

PH Value

5-7


Polyvinyl Alcohol PVA BF 20

Appearance:

White crystalline powder

Viscosity (mp.s)

32-40

Alcoholysis Degree %(mol/ mol)

98.0-100

Volatile (%) ≤

5

Sodium Acetate (%) ≤

2.5

Ash (%) ≤

1.0

PH Value

5-7


2. PVA BP 20 & PVA BF 20 Application:
        PVA BP20 is mainly used in reducing removal in the process of sizing and weaving to maintain factory cleaning; as fiber reinforcement in concrete; as an agent in medical procedures; used in eye drops and hard solution as a lubricant; mainly used as adhesive, in printing industry and textile industry.
        PVA BF20 can be used for heat-hardening resin denaturants, and mainly used for plywood, wood adhesives, such as urea and formaldehyde resins, melamine-formaldehyde resin, etc; also can be used as emulsion stabilizer and PVA film; widely used in construction industry, coating industry and textile industry, etc.