Photoinitiator TPO-L

Product Name

Ethyl (2,4,6-trimethylbenzoyl) phenylphosphinate

Product Code

TPO-L

CAS No.

75980-60-8

Chemical Name

Phenyl(2,4,6-trimethylbenzoyl)phosphinic acid ethyl ester

Formula

C18H21O3P

Molecular Weight

316.33 

Specification

Appearance: Yellow liquid

Loss on Drying: 1.0% max.

Assay:95.0% min

Packing

20kg/drum

Application

As a highly efficient photoinitiator for UV-curable systems.

TPO-L is a liquid photoinitiator for resins containing acrylic groups and for unsaturated polyesters containing styrene. As a liquid photoinitiator with excellent compatibility, it is especially easy to incorporate into all formulations. Since TPO-L absorbs in long wave region of UV spectrum, it can completely cure paints and surfaces pigmented with TiO2. It is particularly suited to use in pigmented coatings, white paints and thick film layers requiring low yellowing and low odor. TPO-L is usually combined with other photoinitiators, 184, 1173 or Benzophenone to improve surface cure.