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TRIMETHYLBENZOYL DIPHENYLPHOSPHINE OXIDE

Description

Trimethylbenzoyl diphenylphosphine oxide (TPO) is a highly efficient photoinitiator widely used in UV-curable coatings, inks, and adhesives. This organophosphorus compound plays a crucial role in initiating photopolymerization reactions, enabling rapid curing of various formulations upon exposure to ultraviolet light.

TPO exhibits excellent photoreactivity, particularly in the near-UV and visible light spectrum (380-420 nm). Its unique molecular structure allows for efficient radical generation, resulting in fast curing times and improved depth of cure compared to traditional photoinitiators. TPO is particularly effective in pigmented systems and thick film applications due to its ability to penetrate deeper into the coating.

This photoinitiator offers several advantages in skincare and cosmetic formulations, including low odor, minimal yellowing, and reduced migration potential. TPO is compatible with a wide range of monomers and oligomers, making it versatile for various product types. Its stability in storage and resistance to premature polymerization contribute to extended shelf life of formulations.

When used in sunscreen formulations, TPO can enhance the overall photoprotection by stabilizing other UV filters and improving film formation on the skin surface.