CHLUMINIT® 263 / Photoinitiator 263 CAS 203573-06-2

263 is a triarylsulfonium salt photoinitiator. Since the sulfur atom can be conjugated with three aromatic rings, the positive charge is dispersed, and it can be cleaved after light excitation to produce polymerization active species with high initiation activity. It has good absorption at 365nm and has the characteristics of fast curing speed, good surface drying, no yellowing, no migration, and no odor.

Purity: ≥98%

Photoinitiator 263 Application scenarios

1. UV-Curable Coatings
UV-curable coatings for wood, plastic, metal, and paper surfaces.

2. UV-Curable Inks
Used in printing and packaging (e.g., food packaging, cigarette packaging), labeling, 3D printing, and other fields.

3. UV-Curable Adhesives
Also known as UV glue, used for bonding electronic components, assembling medical devices, laminating glass, and more.

4. Emerging and Specialized Fields
Includes photoresists (microelectronics), dental materials, composite manufacturing, and other applications.

Description

Photoinitiator 263 CAS 203573-06-2

Synonym:  4-Thiophenyl phenyl diphenyl sulfonium phenylborate

CAS No:  203573-06-2

Molecular Formula:  C24H19S2.C24BF20

General Information:

263 is a triarylsulfonium salt photoinitiator. Since the sulfur atom can be conjugated with three aromatic rings, the positive charge is dispersed, and it can be cleaved after light excitation to produce polymerization active species with high initiation activity. It has good absorption at 365nm and has the characteristics of fast curing speed, good surface drying, no yellowing, no migration, and no odor.

Specification:

Appearance White powder
Purity ≥98%

Usage:

It is mainly used in various cationic light-curing systems, mostly in light-colored systems.

Package:

1kg/BAG

Storage:

Store in a dry, clean, ventilated warehouse.
Avoid exposure to light and heat.
Be careful to prevent leakage, rain and sun during transportation.

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Additional information

Chemical Name

4-Thiophenyl phenyl diphenyl sulfonium phenylborate

CAS No.

203573-06-2

Molecular Formula

C24H19S2.C24BF20

Assay

99%min

Package

1kg/bag,10kgs/carton

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