Dymax Corp., an ISO 9001 certified manufacturer of advanced light-curable materials and light-curing systems, has been issued U.S. Patent number 7,691,557, Polymerizable Composition Exhibiting Permanent Color Change as Cure Indicator, covering the invention of the company’s See-Cure color-change technology.

The technology, developed by Dr. Stephen Cantor and Dr. Igor Khudyakov, addresses the two most-often asked questions about light-curable products: “How do I know I have dispensed enough adhesive?” and “How do I know when the adhesive is cured?”

Dymax adhesives formulated with See-Cure technology are bright blue in color in their uncured state, making them easy to see on the surface of substrates, in deep wells or when sandwiched between two layers of transparent or translucent material. Simple vision systems can be incorporated into assembly processes prior to curing in order to easily identify adhesive coverage and profile.

The blue color is temporary. The disappearance of the adhesive’s blue color is the visible indicator that sufficient light energy has been provided to achieve full cure. As the adhesive cures, the blue color fades and the adhesive ultimately turns clear upon full cure.