CHLUMINIT® 938 / Photoinitiator 938 / Speedcure 938 CAS 61358-25-6

CHLUMINIT® 938 (CH-938), CAS 61358-25-6, is a cationic photoinitiator for UV epoxy systems, photoresists, adhesives, inks and coatings.

Appearance White powder or granular solid
Content ≥99%
Loss on drying ≤1.0%
Melting point 160.0–190.0°C
Absorption peak 240 nm

Description

CHLUMINIT® 938 / Photoinitiator CH-938

CAS: 61358-25-6

CH-938 is a cationic photoinitiator with high crosslinking and curing rates. It is primarily used in UV epoxy systems and is also recommended for photoresists, adhesives, inks and coatings.

Specifications

Appearance White powder or granular solid
Content ≥99%
Loss on drying ≤1.0%
Clarity Clear and transparent
Melting point 160.0–190.0°C
Absorption peak 240 nm

Storage and Packaging

Store in a light-proof, airtight container in a cool, dry, well-ventilated place. Packaging: 20 kg/drum or according to requirements. Shelf life: one year from the date of manufacture under the specified storage conditions.

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Photoinitiator 938 Application scenarios

1. UV Cationic Curing Coatings:

UV-curable coatings for substrates such as metals, glass, and PCBs, suitable for thick films, high-gloss clear coats, and wear-resistant coatings, especially ideal for industrial protection and electronic coating applications requiring low shrinkage and high adhesion.

2. Photoresists and Microelectronics Manufacturing:

As a core photoacid generator component in photoresists, used in photolithography processes for chips, LCD display panels, and semiconductor packaging, facilitating fine pattern transfer and high-precision circuit fabrication.

3. UV Curing Adhesives and Sealants:

Suitable for bonding and sealing optical components, electronic devices, and precision machinery. After curing, it exhibits excellent chemical resistance and temperature resistance, making it suitable for optically transparent adhesives and electronic encapsulation systems.

4. Epoxy and Vinyl Ether System Curing:

Used for UV curing of cationically polymerizable systems such as epoxies and vinyl ethers, such as composite material matrices and electronic potting compounds, improving curing efficiency and material mechanical properties.

5. 3D Printing Photopolymer Resins:

As an initiator for cationic 3D printing photopolymer resins, suitable for high-precision industrial-grade 3D printing, enabling the production of low-shrinkage, high-strength functional parts and prototypes.

6. Organic Synthesis Catalyst:

Used as a catalyst for acid-catalyzed reactions in organic synthesis, such as epoxide ring opening and condensation reactions, suitable for the synthesis of pharmaceutical intermediates and fine chemicals.

Additional information

Chemical Name

Bis(4-t-butyl phenyl)lodonium hexafluorophosphate

CAS No.

61358-25-6

Molecular Formula

C20H26F6IP

Assay

98%min

Package

Carton /drum

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