Sinopec Pva 088-03 (PVA 0388)
DESCRIPTION
PVA 088-03 is a low viscosity
Polyvinyl Alcohol. It is a water-soluble high polymer characterized by low hydrolysis degree.
Saint Petrochemicals Limited is one of the leading suppliers of Polyvinyl Alcohol,
Vinyl Acetate Monomer(VAM),
VAE Emulsion and
Epoxy Resin in China,we are enginged in PVA and VAM industry more than fifteen years.
SPECIFICATION:
- HYDROLYSIS (mol%)
87.0 - 89.0
- APPEARANCE:
White (slightly yellowish) granules
- VISCOSITY (mPa.s or cps):
3.0 - 4.0
- VOLATILE (wt%):
5.0 (Max)
- Ph:
5 – 7
- ASH (wt%)
0.5 (Max.)
- PURITY (wt%):
93.5 (Min.)
STORAGE
Until 60 months in the original bags, at room temperature.
PACKAGING
Packed in paper bags, 20 kg net per bag. 18 MT per 20 feet container.
Transportation:
Transported in clean vehicles with shelters to prevent form humidity, raining and sunshine. Gently handle to avoid breakage of bag when transiting.
About PVA
polyvinyl alcohol (PVA), a colourless, water-soluble synthetic resin employed principally in the treating of textiles and paper.
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 (PVAc), in an alcohol such as methanol and treating it with an alkaline catalyst such as sodium hydroxide. The resulting hydrolysis, or “alcoholysis,” reaction removes the acetate groups from the PVAc molecules without disrupting their long-chain structure. The chemical structure of the resulting vinyl alcohol repeating units is:polyvinyl alcohol, polymer, chemical compound.
When the reaction is allowed to proceed to completion, the product is highly soluble in water and insoluble in practically all organic solvents. Incomplete removal of the acetate groups yields resins less soluble in water and more soluble in certain organic liquids.
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