IGM ES A 198 Photoinitiator

Features Of IGM ES A 198 Photoinitiator

1. Synergistic co-initiator advantage - Compounded with Type II photoinitiators, greatly improving curing speed and enhancing deep curing effect

2. Polyfunctional structural feature - Polyfunctional high-molecular-weight amine structure, strong synergistic activity and wide application range

3. Dual-system adaptability - Suitable for both clear and pigmented UV systems, no impact on base color after curing, good color stability

4. Low environmental load advantage - Low odor, low yellowing and low migration, meeting strict environmental standards, suitable for sensitive scenarios

5. Easy processing and compounding - Easy to disperse and weigh, can be flexibly compounded with various UV formulations, convenient operation

Typical Applications Of IGM ES A 198 Photoinitiator

1. Water-based UV coatings - Water-based wood and plastic UV coatings, synergistic curing, improving film wear resistance and gloss

2. Pigmented UV inks - Screen and offset pigmented UV inks, suitable for paper and plastic substrates, fast curing and full color

3. Transparent UV varnishes - Various transparent UV varnishes, low yellowing property, maintaining high light transmittance, good decorativeness

4. Environmental UV adhesives - Low migration UV adhesives, suitable for precision bonding scenarios, meeting strict environmental requirements

5. Food packaging UV systems - Low migration and low extraction value, suitable for food packaging-related UV curing products, safe and compliant

Specifications Of IGM ES A 198 Photoinitiator

IGM ES A 198 Photoinitiator – Frequently Asked Questions (FAQ)

Q1: What is the primary mechanism of photoinitiation for IGM ES A 198?

A: IGM ES A 198 is a Type II photoinitiator that operates via hydrogen abstraction, generating reactive radicals upon UV exposure in the presence of suitable co-initiators such as tertiary amines or alcohols.

Q2: Which UV wavelength range is most effective for activating IGM ES A 198?

A: It exhibits strong absorption in the UVA region, with optimal activation typically occurring between 320 nm and 380 nm. Performance is best under medium-pressure mercury lamp irradiation or LED sources emitting within this range.

Q3: How does IGM ES A 198 compare to benzophenone in terms of yellowing tendency and odor?

A: Compared to conventional benzophenone derivatives, IGM ES A 198 demonstrates significantly reduced post-cure yellowing and lower volatility, resulting in minimal residual odor—making it well-suited for applications where appearance and sensory properties are critical.

Q4: Is IGM ES A 198 compatible with acrylate-based and hybrid (acrylate/epoxide) formulations?

A: Yes, it is widely used in free-radical acrylate systems and shows good compatibility in hybrid formulations when paired with appropriate cationic co-initiators and sensitizers. Compatibility should always be verified experimentally due to formulation-specific interactions.

Q5: What is the typical dosage range for IGM ES A 198 in standard UV-curable coatings and inks?

A: Dosage depends on formulation requirements, film thickness, and irradiation conditions, but it is generally used at low concentrations—typically ranging from 0.1% to 2% by weight relative to total solids.