high purity Polyvinyl Alcohol:
good chemical stability
high purity
High water-soluble
Forming a uniform grain
Polyvinyl Alcohol Introduction
our company are the following series of 17-99F(L), 17-99F(H), 17-99 (L), 17-99(H), 18-99(L), 18-99(H), 19-99(L), 22-99(L), 19-88, and the like. Special PVA of different viscosity and alcoholysis can be produced according to the requirements of our customers. Besides, PVA powder with mesh numbers 20-60 can also be provided.
The PVA production facilities of our company have been perfecting day by bay with the long-term absorption and technological transformation on the basis of importing the complete set of technology from Kuraray Company of Japan. PVA produced by our company is good in performances and stable in quality. It enjoys a great reputation both at home and abroad.
Polyvinyl Alcohol Characteristics
Polyvinyl Alcohol is a kind of non-ionic linear high polymer. It is non-toxic, non-smelly, and it looks white or light yellow, in the form of floccules, flakiness and solid powder. Its molecular formula is (C2 H4 O)n, of which "n" refers to the average degree of polymerization and the molecular weight is 44n. The molecular formula of PVA 17-88 is (C2 H4 O)n-(C2 H6O)m, of which "n + m" is the average degree of polymerization and the molecular weight is 44n+86m. The simulating specific gravity of flocculent PVA is (0.21-0.30)g/cm3, while that of flaky PVA is (0.47+-0.06)g/cm3.
Polyvinyl Alcohol has fairly good chemical stability, insulativity and film-forming properties. It has typical chemical properties of polyalcohol.
Polyvinyl Alcohol Quality standard (Q/OWAL001-2006):
ITEM | hydrolysis,% ≥ | viscosity,mPa·s | Sodiumacetate,% ≤ | volatile,% ≤ | ash,% ≤ | purity,%≥ |
17-99(L) | 99.5 | 22~31 | 2.1 | 7.0 | 0.8 | 90.0 |
18—99(L) | 99.2 | 32~40 | 2.1 | 7.0 | 0.8 | — |
20-99(L) | 99.2 | 46~50 | 2.1 | 7.0 | 0.8 | — |
22-99(L) | 99.2 | 51~56 | 2.1 | 7.0 | 0.8 | — |
24—99(L) | ≥99.2 | >56 | 2.1 | 7.0 | 0.8 | — |
17—88 | 86.0~89.0 | 20.5~24.5 | 1.0 | 5.0 | 0.7 | — |
