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)
WEBER STEVE (US)
RICHARD GILLES (FR)
DARMES DANIEL (FR)
Application Number:
PCT/EP2001/008497
Publication Date:
May 16, 2002
Filing Date:
July 23, 2001
Export Citation:
Assignee:
ESSILOR INT (FR)
BERZON RONALD A (US)
WEBER STEVE (US)
RICHARD GILLES (FR)
DARMES DANIEL (FR)
BERZON RONALD A (US)
WEBER STEVE (US)
RICHARD GILLES (FR)
DARMES DANIEL (FR)
International Classes:
B29C35/08; B29D11/00; C08F2/46; C08F2/48; G02C7/10; C08F2/50; C08F299/02; C09K9/02; G02B5/22; (IPC1-7): C09K9/02; C08F2/46; C08F2/48; B29D11/00
Domestic Patent References:
| WO2000019246A2 | 2000-04-06 |
Foreign References:
| US6068797A | 2000-05-30 | |||
| US5910516A | 1999-06-08 | |||
| US5851328A | 1998-12-22 |
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