Product No.:Km-505
Product Name:Photoinitiator TPO
Cas No.:75980-60-8
Molecular Formula:C22H21O2P
Molecular Weight:348.37
Chemical Name: 2,4,6-trimethylbenzoyldiphenyl phosphine oxide

Appearance: light yellow powder
Purity: 99.0%min  
Melting Point: 90.0-94.0 ºC
Loss Rate:  Volatile Matter: ≤0.5%;     Ash Content:≤0.1%;

Dlarity: 10g /100 ml toluene

Character and Application:

TPO appears light yellow powdermelting point is at 90-94ºCand it has enough solubility in active diluents. Since it has a wide range of  absorptionthe typical absorptions are at 365nm380nm400 nmand the maximum absorption wavelength is about 425nmits absorption range is wider than conventional photoinitiatorsand it can absorb well different wavelength UV-lights. It can generate two free radicals --- benzoyl and phosphorus acyl which both can initiate polymerizationthereforeits photocuring speed is fastand that it has light-decolourizatiois suitable for thick film deep curingmoreoverthe coating doesn't turn to yellowand it is also fit for water base with the characteristic of low volatilitymild smell and anti-yellowing.

This product usually be used in the white systemcan be used in UV cure coatingsprinting inkUV curing adhesivesoptical fiber coatingslight stabilizerlight polymerization formestereo surface plate resincomposite materials and teeth filling material etc..

The usage of this product should base on the results of practical experiments and the suggested volume of addition is 0.5-5 % (w/w).

In consideration of that TPO also absorbs a little in the visible regionit should be protected from light in the process of storage and transportation.

Advantages:  

1. Its photocuring speed is fast
2. Have light-decolourizatio
3. Can be used for thick coating curing.
4. Belongs to low-volatilitymild-smell and environment friendly product
5. Anti-yellowing   
 

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We are based in Wuhan, Hubei province, China, start from 2011, works on research and development, production and technical services of Silicone chemicals, pharm intermediates, electronic chemicals, organic fluorine surfactant, electroplating chemicals etc.

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