Omnirad TPO

IGM Resins USA Inc.

IGM Resins USA Inc. · Omnirad

Omnirad TPO is a highly efficient, low-yellowing, type I photoinitiator used to initiate radical polymerization of unsaturated oligomers such as acrylates after exposure to UV light.It can be used in combination with mono or multi-functional monomers as reactive diluents. Omnirad TPO is commonly applied in UV curable coating and ink formulations for various substrates like paper, wood, metal, plastics, and glass.

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Specifications

Identifiers

Chemical name
2,4,6-Trimethylbenzoyl-diphenyl Phosphine Oxide
CAS number(s)
75980-60-8
EC number
278-355-8
Molecular formula
C22H21O2P
InChI key
VFHVQBAGLAREND-UHFFFAOYSA-N
INCI name
Diphenylphosphoryl-(2,4,6-trimethylphenyl)methanone
Synonyms
(2,4,6-Trimethylbenzoyl)diphenylphosphine Oxide, Trimethylbenzoyl Diphenylphosphine Oxide, Free Radical Photoinitiator - Type I

Technical specifications

Properties

PropertyValueUnit
Physical StateSolid-
AppearancePowder-
ColorYellow-
Melting Point93°C
Boiling Point> 200°C
Vapor Pressure0 (at 20°C)hPa
Relative Density1.218 (at 20°C)-
Water Solubility0.0119 (at 20°C)g/L
Partition Coefficientlog Pow 3.1 (at 23°C)-
Autoignition Temperature> 400°C

Specifications

Test ConditionSpecificationValueUnitTest Method
-AppearancePale Yellow Crystal or Powder (Pass)-Visual
-Purity≥ 99.0%HPLC Analysis
-Volatiles≤ 0.2%Loss on Drying
-Melting Range91 - 94°CMelting Point Apparatus
10g/100ml TolueneClarity of SolutionPass-Visual
-Acid Value≤ 0.5mg KOH/gTitration
-Shelf LifeDurable for at least 24 months--
Industries
CASECeramics & glassFurniture & WoodPackaging & PrintingPaints & CoatingsPlastics & RubberPulp & Paper
Product groups
PhotoinitiatorsCoating Additives
Applications
Radiation-curable coatingsUV-curable inks
Functions
Curing agentPhotoinitiator
Market segments
Protective coatingsPrinting inks & coatings

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