Fluorescent degree of cure monitors

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Compositions to be polymerized by wave energy wherein said...

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522100, 522103, 522182, 526256, 526268, 526259, 526299, 526280, 526284, 528 15, 528 25, 528 27, 528 28, C08F 1232, C08F26504, C08F21232, C08G 7704

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050474448

ABSTRACT:
A curable composition, the cure of which can be monitored optically, comprises at least one of a hydride curable silicone, an ethylenically unsaturated compound, and a cationically polymerizable monomer, and as cure monitor dibenzofulvene or derivatives thereof. The cure monitor is a latent fluorophore which reacts under the cure conditions to form a UV-detectable fluorophore.
The invention also provides a method for measuring degree of cure of a polymeric material which can be a coating or an article.

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