iGM Resins Launches Photomer SC91 Photoactive Resin Chemistry

iGM Resins launches Photomer SC91, a breakthrough in UV curing technology. This innovation represents a new chemistry that changes how photoinitiation is delivered in UV and LED systems.

Photomer SC91 is a self-curable acrylate resin with built-in photoinitiator functionality. It enables UV Hg or UV LED curing with no or only minimal addition of external photoinitiators. This is achieved by integrating the photoinitiating groups directly into the resin backbone.

This Type II photoactive concept combines acrylate and photoinitiator technologies in a single polymeric material. As a result, the photoinitiator part remains chemically bound within the structure.

The launch of Photomer SC91 marks the beginning of a new Photomer SC series. This platform is based on self-curable resin technology and will expand to address evolving market requirements in performance, sustainability, and regulatory compliance.

iGM Resins is developing additional materials within this series to support next-generation UV formulations. We are currently awaiting customer feedback to guide us in creating the optimal new combination of acrylate and photoinitiator for evolving application needs.

Photomer SC91 addresses key formulation challenges in modern UV systems:

• Reduced or eliminated need for added photoinitiators
• Low migration potential for sensitive applications
• No detectable extractable photoinitiator under test conditions
• Polymer classification with molecular weight above 1000 Da

This makes it suitable for indirect food contact packaging, overprint varnishes, industrial coatings, adhesives, electronics, and advanced materials.