Chemical name: 2, 4, 6, -trimethylbenzoyl-diphenyl phosphorus oxide
2,4,6-Trimethyl Benzoyl Diphenylphosphine Oxide
Abbreviation: TPO Molecular Formula: C22H21PO2 Molecular Weight: 348.5
CAS No. 75980-60-8
Technical Indicators: Appearance: Melting Point of Pale Yellow Crystalline Powder: 91.0-94.0 C Absorption Wavelength: 273-370 NM
Volatile matter: <0.2% acid value (mgKOH/g): <0.5 content: > 99.0%
Absorption wavelength/nm: 295 nm, 368 nm, 380 nm, 393 nm (in methanol solution)
Solubility: 20 C (g/100g solution) Application: 1050 is an efficient free radical (1) photoinitiator with absorption in a long wavelength range. Because of its wide absorption range, its effective absorption peak is 350-400 nm, and it has been absorbed to about 420 nm. Its absorption peak is longer than that of conventional initiator. After irradiation, two free radicals, benzoyl and phosphatidyl, can be formed, which can initiate polymerization. Therefore, the photo-curing speed is fast. It also has photobleaching effect and is suitable for thick films. Deep solidification and yellow-stable coating characteristics, with low volatility, suitable for water-based. This product is mostly used in white system. It can be used in ultraviolet curing coatings, printing ink, ultraviolet curing adhesives, optical fiber coatings, photoresist, photopolymer plate, stereolithographic resin, composite materials, dental fillers, etc. The use of this product should be based on the results of actual experiments.
The recommended dosage is 0.5-4% w/w.
It can be completely cured on the pigmented surface of white or high titanium dioxide. The coating does not yellowing, low post-polymerization effect and no residue. It can also be used for transparent coatings, especially for products with low odor requirements. It has high initiation efficiency when used alone in unsaturated polyester containing styrene system. Acrylate systems, especially colored systems, usually need to be used in combination with amine or acrylamide, and other photoinitiators to achieve complete curing of the system, especially for low yellowing, white systems and thick film curing. Silk printing ink, lithographic printing ink, flexo printing ink, wood coating. The recommended dosage is 0.5-3.0% (colored system) and 0.3-2.0% (transparent system).
Absorption spectra:
Storage requirements: In the visible light also has absorption, so must avoid light preservation and use
Safety Notes: Details are provided in the Material Safety Data Sheet (MSDS).
Packaging Specification: 20KG/case
