Photoinitiator TPO CAS No. 75980-60-8 UV Curing Agent Photocuring Agent
Photoinitiator TPO(CAS No. 75980-60-8)
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Items
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Technical index
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Product name
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2,4,6-trimethylbenzoyldiphenyl phosphine oxide
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Synonyms
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Photoinitiator TPO
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CAS No.
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75980-60-8
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Molecular formula
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C22H21O2P
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Molecular Weight
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348.37
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Appearance
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light yellow powder
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Assay
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99%min
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Melting Point
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90.0-94.0 ‘C
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Loss Rate:Volatile Matter
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0.5%max
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Ash Content
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0.1%max
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Dlarity
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10 g / 100 ml toluene
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Character and Application:
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 can initiatepolymerizationthereforeitsphotocuring 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.
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 initiatepolymerizationthereforeitsphotocuring 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.
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