PVOH (PVC Grade)

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PVOH (PVC Grade)

PVOH (PVC Grade)

Overview

Modified polyvinyl alcohol (PVOH) is graded according to different degrees of polymerization, hydrolysis and copolymerization monomers.

The modification of PVA is mainly to use the double bonds, ester groups and the chemical activity of the hydroxyl group after alcoholization of vinyl acetate to change the side chain group or structure, and introduce other monomers to become copolymers dominated by PVA.

General properties

Polyvinyl alcohol is a water-soluble polymer made by alcoholysis of polyvinyl acetate. The properties of different grades are mainly determined by molecular weight and residual acetyl content.

PVOH (PVC Grade) is the main suspension agent that has been developed for PVC suspension polymerization. The ideal grain size can be obtained at low concentration polymer. In addition, the precise control of the particle size distribution is achieved, and the PVC particles are more spherical. Using the PVOH (PVC Grade), PVC particle density with good porosity is produced while maintaining a satisfactory volume. The plasticizing speed, "fisheye" count and residual vinyl chloride monomer levels are greatly improved by the use of PVOH (PVC Grade).

Storage

Modified PVA for PVC can be stored for an unlimited period of time under appropriate conditions that is in its original packs in closed, dry rooms, at room temperature.

Product Summary

Title Main categories Solids Degree of hydrolysis viscosity Packages
PVOH 452 Auxiliary dispersant 40.0±1.0% 43.0-47.0 800-2400 25℃ BF DV2T(mPa.s) In 200 kg/drum
PVOH 552 Auxiliary dispersant   53.0-57.0 <2400 In 200 kg/drum
PVOH 725 Primary dispersant 98.0  71.0-75.0 4.8-7.0 4% aqueous solution 20 °c(mPa.s) In 25 kg/bag
PVOH 735 Primary dispersant 98.0  73.0±1.0 5.3±0.5 In 25 kg/bag
PVOH 745 Primary dispersant   73.5±1.5 6.0±0.5 In 25 kg/bag
PVOH 785 Primary dispersant   78.0±1.5 6.0±0.5 In 25 kg/bag
PVOH 8035 Primary dispersant   80.0±1.5 35.0±3.0 In 25 kg/bag
PVOH 8039 Primary dispersant   80.0±1.5 39.0±3.0 In 25 kg/bag
PVOH 8048 Primary dispersant   80.0±1.5 48.0±3.0 In 25 kg/bag
PVOH 8548 Primary dispersant   85.0±2.5 48.0±3.0 In 25 kg/bag
PVOH 8850 Primary dispersant   88.0±1.5 50.0±3.0 In 25 kg/bag

 

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