Photoinitiator EMK (CAS 90-93-7): Technical Guide & Applications
Table of Contents
1. Product Overview & Specifications
| Parameter | Photoinitiator EMK | Conventional Alternatives |
|---|---|---|
| Chemical Name | 4,4′-Bis(diethylamino)benzophenone | Benzophenone derivatives |
| CAS Number | 90-93-7 | Varies by compound |
| Molecular Formula | C21H28N2O | Typically C13H10O |
| Molecular Weight | 324.46 g/mol | 182.22 g/mol |
| Melting Point | 93-95°C | 48-49°C |
| Flash Point | 151-193.6°C | 110-150°C |
| Water Solubility | Insoluble | Low solubility |
2. Key Applications
Core Functional Roles:
- UV-Curable Systems: Primary photoinitiator in coatings, inks, and adhesives requiring rapid polymerization under UV-A spectrum (320-390 nm)
- Dye Intermediate: Critical component in synthesis of triarylmethane dyes for textiles and plastics
- Photoresist Formulations: Enables high-resolution patterning in PCB manufacturing
- Advanced Materials: Used in optical films and specialty polymer production
3. Industrial Use Cases
Implementation Scenarios:
- Automotive Coatings: Reduces curing time from 30 minutes to <90 seconds in clearcoat applications
- Flexible Packaging: Enables food-safe printing inks with VOC content <2%
- Electronics Manufacturing: Achieves 5μm line resolution in multilayer circuit boards
- Textile Processing: Increases dye fixation rate to 98% in polyester coloration
4. Verified Client Implementations
Case 1: Leading Asian Coatings Producer
Challenge: Required <2% residual monomers in automotive clearcoats
Solution: 1.2% EMK formulation with co-initiators
Result: Achieved 99.7% conversion rate (ISO 11890-2 compliant)
Case 2: European Packaging Consortium
Challenge: Migration limits <0.01mg/dm² for food contact materials
Solution: Optimized EMK concentration at 0.8% w/w
Result: Passed EU 10/2011 compliance with 0.007mg/dm² migration
Case 3: North American Electronics Manufacturer
Challenge: Required <5μm feature stability in flexible circuits
Solution: EMK-based photoresist with 2.5% loading
Result: Achieved 3.8μm consistent line resolution (IPC-6013 Class 3)
5. Procurement & Technical Support
Available in industrial quantities (25kg drums) with custom purity options (98-99.9%). Request formulation guidance or MSDS documentation:
- Email: info@vivalr.com
- Tel: (86) 15866781826



评论
目前还没有评论。