Sinocure® CAT-263

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Sinocure® CAT-263

Cationic photoinitiator, Newly Developed PIs, Sinocure® Photoinitiator

SINOCURE®CAT-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.

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SINOCURE® CAT-263


Synonym:  4-Thiophenyl phenyl diphenyl sulfonium phenylborate

CAS No:  203573-06-2

Molecular Formula:  C24H19S2.C24BF20

Molecular Structure:

General Information :

SINOCURE®CAT-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 :


AppearanceWhite powder
Purity≥99%



Usage :

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

UV Absorption Spectrum :

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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