Photoinitiator TPO CAS:75980-60-8 Diphenyl(2,4,6-trimethylbenzoyl)

Photoinitiator TPO CAS:75980-60-8 Diphenyl(2,4,6-trimethylbenzoyl)

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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Product Details

Parameters

Items

Technical index

Product name

2,4,6-trimethylbenzoyldiphenyl phosphine oxide

Synonyms

Photoinitiator TPO

CAS No.

75980-60-8

Molecular formula

C22H21O2P

Molecular Weight

348.37

Appearance

light yellow powder

Assay

99%min

Melting Point

90.0-94.0 'C 

Loss Rate:Volatile Matter

0.5%max

Ash Content

0.1%max

Dlarity

10 g / 100 ml toluene

TPO appears light yellow powdermelting point is at 90-94'Cand 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 caninitiatepolymerizationthereforeits 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 forwater 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 formestereosurface plate resincomposite materials and teeth filling material etc..

The usage of this product should base on the results of practicalexperimentsand 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.

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