One-component optical resin composition

Details One-component optical resin composition One-component optical resin composition

1998-03-09

1999-08-24

Tucker, Philip

Compositions

Light transmission modifying compositions

Displaying color change

528 76, 528 77, 528 79, 528 81, 528 85, G02B 523, C08G 1832

Patent

active

059421584

ABSTRACT:
Described is a polymerizable organic composition comprising at least one capped polyisocyanate having nonfugitive capping groups, e.g., a 1H-azole, a polythiol having two or more thiol groups, and optionally a reactive hydrogen compound selected from polyols, compounds having both hydroxy and thiol groups, and mixtures thereof. A polymerizate, having a thickness of at least 0.5 millimeters, e.g., an optical lens, obtained from the composition of the present invention has an initial Barcol hardness of at least 1, a refractive index of at least 1.57 and an Abbe number of at least 33. Also described are photochromic articles prepared from such polymerizates.

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