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Polyvinyl alcohol (PVA)
is an important water-soluble synthetic polymer made by alcoholysis or hydrolysis of polyvinyl acetate (PVAc). It appears as white to slightly yellow granules, powder, or flocculated solids.
PVA has become a chemical raw material with extremely wide applications. It's not only used as a base material for textile sizing, high-performance adhesives, paper treatment agents, and packaging films, but also, because of its good biocompatibility, in biomedical fields like drug carriers, medical dressings, and tissue engineering scaffolds. From traditional industries to high-tech frontiers, PVA plays an indispensable role.
SPECIFICATIONS
Grades |
Viscosity 1) (mPa.s) |
Degree of Hydrolysis (mole%) |
pH(4% aqueous solution) |
Volatile2) (%max) |
Ash (% max) |
PVA073-05 |
4.5~6.5 |
70.5~73.5 |
5.0~7.0 |
5.0 |
1.0 |
PVA074-05 |
4.8~6.8 |
72~74 |
5.0~7.0 |
5.0 |
1.0 |
PVA088-05 |
4.5~6.0 |
86.5~88.0 |
5.0~7.0 |
5.0 |
0.5 |
PVA088-20 |
42.0~52.0 |
78.0~82.0 |
4.5~7.0 |
5.0 |
0.5 |
PVA088-50 |
45.0~55.0 |
86.5~89.5 |
5.0~7.0 |
5.0 |
0.5 |
PVA1788 |
21.5~24.5 |
86.5~88.0 |
5.0~7.0 |
5.0 |
0.4 |
PVA2688 |
≥60.0 |
86.5~89.0 |
5.0~7.0 |
5.4 |
0.5 |
PVA0588 |
4.5~6.0 |
86.5~88.0 |
5.0~7.0 |
5.0 |
0.5 |
1) Brookfield viscometer, UL-Adapter, 4% aqueous solution at 20℃.
USES
General for pvc as suspending agents；Specifically, is using for construction industry, textile industry and paper etc. For example: The material to make PVB.
Adhesives: Envelope, Round tube Filler., Binders.
Textiles: Sizing. Finespun sizing.
Paper: Casting paper, goffered paper.
Others: Ceramic. Film.
SAFETY
Please consult the relevant material safety data sheet for more details.
PACKAGING
supplied in 25 kg paper sacks or 800kg bulk bags. Each sack carries the grade number, batch number and net weight.
Deliveries are palletised with each pallet being stretch wrapped and labelled with the relevant shipping marks.
STORAGE
1. PVA should be stored away from wet areas and naked flames. Ingress of moisture should be avoided to maintain product quality.
2. As supplied, the product should remain fit for use for 12 months from the date of delivery. Beyond that date, the material may still be fit for use, but we would advise that it is good practice to test the material. As such, we advise that material stored for 12 months or more after delivery should be tested before use.
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