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Title:
METHOD OF MANUFACTURING A PHOTOCHROMIC MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO2002008355
Kind Code:
A3
Abstract:
A method of manufacturing a photochromic molded article which comprises the steps of: filling a mold with a photopolymerizable monomer composition containing a photopolymerizable monomer, a photoinitiator and a photochromic compound capable of coloring upon UV irradiation; pre-heating the composition to a temperature which reduces or prevents coloration of the photochromic compound during the subsequent photopolymerization step; and photopolymerizing the composition under irradiation with a light comprising a UV portion and a UV-visible portion.

Inventors:
BERZON RONALD A (US)
WEBER STEVE (US)
RICHARD GILLES (FR)
DARMES DANIEL (FR)
Application Number:
EP0108497W
Publication Date:
May 16, 2002
Filing Date:
July 23, 2001
Export Citation:
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Assignee:
ESSILOR INTERNATIONAL COMPAGNIE GENERALE D'OPTIQUE
BERZON, RONALD, A.
WEBER, STEVE
RICHARD, GILLES
DARMES, DANIEL
International Classes:
G02C7/10; B29C35/08; B29D11/00; C08F2/46; C08F2/48; C08F2/50; C08F299/02; C09K9/02; G02B5/22; (IPC1-7): C09K9/02; C08F2/46; C08F2/48; B29D11/00
Domestic Patent References:
WO2000019246A22000-04-06
Foreign References:
US6068797A2000-05-30
US5910516A1999-06-08
US5851328A1998-12-22
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