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PVA | Polyvinyl Acetal (II)

Executive standard: Q/TYG.J001-2014
CAS RN: 63148-65-2


Executive standard: Q/TYG.J001-2014

CAS RN: 63148-65-2

1. Physical and chemical properties:

1.1 Brief introduction:Polyvinyl acetal (II) iswhite solid particle, non-toxic, non-harmful. It has many good properties, such as, good anti-weather ability, high transparency, good insulation, good film-formation ability, anti-impact at low temperature, cold weather resistance, water proofing and aging resistance.

1.2 Structure formula:

PVA

2. Technical indexes:

Item Index
Type TB-05T TB-17T TB-26T
Particle size (through 20 mesh), % (m/m) 100 100 100
Volatile matter, % (m/m) ≤3.0 ≤3.0 ≤3.0
Free acid (in HCl), % (m/m) ≤0.05 ≤0.05 ≤0.05
Vinyl alcohol acetal, % (m/m) ≥78.0 ≥78.0 ≥78.0
Hydroxyl value, %m/m 11-17 11-17 11-17
Viscosity (20℃±0.2℃,10%, 5% toluene-ethanol solution), mPa.s 10-3010% 80-1205% 210-2705%
Transparency, % 430nm ≥80 ≥80 ≥80
660nm ≥90 ≥90 ≥90
Jelly, % (m/m) -- -- --
Appearance White / slight yellow powder or particle

3. Application: Polyvinyl acetal (II) has good thermostability and high transparency. It can be applied in heat-resistant coating, adhesive of copper clad laminate, ink, dyestuff, binder of non-woven fabrics and etc.

4. Package: Woven bag with inner plastic bag, 12.5 kg net each.

5. Storage: Stored at cool and ventilate place. Sealed preservation. Shelf life: 12 months. It is still available if he retest results of the properties are qualified after expired date.

6. Transportation: Avoid rain, moist and sun-baked. Don't mix with strong oxidizer.

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