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Application
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Stabilizer |
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Suspending Agent (PVC)
1. Introduction
KURARAY PVAs have been used in various kinds of industries for a warp size, a paper coating agent, an adhesive, an emulsifier and so on.
Especially, KURARAY has a wide range of PVAs for the PVC industry, such as suspending agents and anti-dryfoaming agents to meet customer's various requirements.
This brochure shows an outline of characteristics and advantages of the KURARAY PVAs for the PVC manufacture.
2. Grades and Specifications
1) Primary Suspending Agents
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|
Volatile
(%) |
Hydrolysis
(mol %) |
Viscosity
(mPas)4%, 20 |
Ash
(%)Na2O |
|
| 420 |
5.0
max |
78.0
- 81.0 |
37.0
- 45.0 |
0.4
max |
| 420H |
5.0
max |
78.5
- 81.5 |
29.0
- 35.0 |
0.4
max |
| 422H |
5.0
max |
78.5
- 81.5 |
32.0
- 38.0 |
1.0
max ** |
| 424H |
5.0
max |
78.5
- 80.5 |
45.0
- 51.0 |
0.5
max** |
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| L-8 |
3.0
max |
69.5
- 72.5 |
5.0
- 5.8 |
1.0
max |
| L-9 |
3.0
max |
69.5
- 72.5 |
6.0
- 6.5 |
1.0
max |
| L-10 |
5.0
max |
71.5
- 73.5 |
5.0
- 7.0 |
1.0
max |
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| 624 |
5.0
max |
95.0
- 96.0 |
50.0
- 60.0 |
0.4
max |
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**:Sodium acetate content (%)
2) Secondary Suspending Agents
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Volatile
(%) |
Hydrolysis
(mol %) |
Viscosity
(mPas)**
4%, 20 |
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| LM-10HD |
3.0
max |
38.0
- 42.0 |
4.5
- 5.7 |
| LM-20 |
3.0
max |
38.0
- 42.0 |
3.0
- 4.0 |
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**:Water / Methanol = 1/1
3) Anti-dryfoaming Agents
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Volatile
(%) |
Viscosity (mPas)**
4%, 20 |
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| ACM-3 |
5.0 max |
2.8 - 3.3 |
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**:Water / Methanol = 1/1
Testing methods of Volatile, Hydrolysis, Viscosity and Ash content for the PVAs listed herein except secondary suspending agents and anti-dryfoaming agents are based on JIS K 6726.
For secondary and anti-dryfoaming agents, modified methods are adopted for Hydrolysis and Viscosity measurement. Please consult KURARAY for more details.
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