Pi 819

Chemical name: Phenylbis(2,4,6-trimethylbenzoyl)phosphine oxide

CAS No.: 162881-26-7

Specification

Items

Standard

Appearance

Light yellow powder

Assay

≥98.5%

Melting range

131-135℃

Applications：

 

PI 819 may be used, after adequate testing, in UV curable formulations for clear and for pigmented coatings on wood, metal, plastic, paper and optical fibers as well as for printing inks andprepregs.

PI  819 exhibits at low concentrations an outstanding curing performance in highly opaque white and colored furniture coatings or screen inks containing rutile titanium dioxide or colored pigments and

affords minimum yellowing after exposure to sufficient amounts of UV radiation. Additionally the outstanding absorption properties of IRGACURE 819 allow curing of thick sections.

PI 819 can be used in combination with other photoinitiators such as PI 184 or PI 651. With the latter it is especially suited to cure polyester/styrene resins as used for glass reinforced materials.

Due to its photosensitivity at longer wavelengths,PI 819 can easily be used in combinations with UV absorbers, e.g. TINUVIN 400. It is therefore ideally suited for use in weather-resistant UV curable

coatings.

The amount of PI 819 required for optimum performance should be determined in trials covering a concentration range.

Leaf Chemicals CO., Ltd ( manufacturing)With years of developing, the company is able to produce and supply series of UV stabilizers, photoinitiators, flame retardants and antioxidants. Now we have four production site and each plant is equipped with advanced facility and managed by professional stuff. We believe it?s our responsibility to develop and promote environmentally friendly product. Shanghai Leaf Chemicals CO., Ltd. ( Trading and service)The company was established at year 2010 in Shanghai . It is an outstanding marketing team that is devoted to supplying and serving high quality polymer additives to the domestic and international industries such as plastic coating, paint, printing ink, plastics, etc. We will do our utmost to select correct products for the correct markets through right channels. Up until now , we have successively established partners for different products in the markets like German , Portugal , Switzerland, Austria , South Korea , Vietnam and India . We welcome more enterprises to become our cooperative partners.