Polyvinyl alcohol (abbreviated as PVA) also can be called PVOH. PVA is unique among polymers (chemical compounds made up of large, multiple-unit molecules) in that it is not built up in polymerization reactions from single-unit precursor molecules known as monomers. Instead, PVA is made by dissolving another polymer, polyvinyl acetate, in an alcohol such as methanol and treating it with an alkaline catalyst such as sodium hydroxide. There are several brands of PVA in the world, and China PVA is one of best one. Our PVA1799, PVA2099, PVA2499 can replace PVA BF17, PVA BF20, PVA BF24.

 

PVA BF17,  PVA BF20, PVA BF24 specifications:

Item	Grade
	PVA BF17	PVA BF20	PVA BF24
Viscosity(cps)	25-30	35-43	58-68
Hydrolysis (mole %)	98.5-99.2	98.5-99.4	98.5-99.2
Volatile (wt %)	≤5	≤5	≤5
Ash (wt %)	≤0.7	≤0.7	≤0.7
PH	5-7	5-7	5-7

 

PVA BF17, PVA BF20, PVA BF24 Applications:

PVA BF 17 (PVA-1799) is mainly used for the production of textile size, coating, adhesive, acetal derivatives, widely used for paper processing, emulsifier, dispersant and protective colloid, also for film and soil amendments.

 

PVA BF 20(PVA-2099), PVA BF24 (PVA-2499) are suitable for the production of coating and bond specially.