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Novolyte Potassium Toluene Phosphinate CAS# 73276-99-0
TOPAK - Improves Polyamide Processing and Performance
TOPAK functions in nylon 6,6 processing:
- Catalyst for condensation polymerization
- Antioxidant for low color - and allowing higher temperature and faster melt-thread spinning fiber production
- Reduce thread breakage during spinning and high-speed weaving
- Improve performance - for airbags and other applications
How does TOPAK improve processing, color, and performance?
- Decomposes hydroperoxides
- But does NOT form color bodies as phenolics such as BHT may
- Is a reducing agent - Reacts with quinoid color bodies
- To give non-conjugated and less colored reduction products
- TOPAK neutralize acids
- Increase ability to withstand temperature
- Basic TOPAK has also been seen to improve coloring and wash-fastness
- Due to its affinity for acid dyes - Also a mild UV stabilizer
- At 200 to 1000 ppm, see increased:
- Tensile strength, elongation at break, and impact strength
TOPAK has allowed the invention of high-performance polyester alloys of polyimides and polyamides.
- TOPAK increases compatibility and enhances properties
- US 6403684, 6646031 at 100 to 2000ppm
- Also improves properties when fiberglass reinforced
- Users claim improved dimensional stability, higher melting point, and more compact molecular structure.
Description and Properties
TOPAK - Potassium Salt of Toluene Phosphinic Acid CAS# 73276-99-0
Novolyte is the only commercial source of TOPAK.
| Property |
Min |
Max |
| Molecular weight |
|
194.1 |
| Wt. % TOPAK |
48 |
52 |
| Wt. % water |
48 |
52 |
| Density 20°C |
1.20 |
1.24 |
| Color- APHA |
|
150 |
| Phosphonate, potasssium salt |
|
2.5 |