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Title:
PHOTOCHROMIC ARTICLES AND METHODS FOR MAKING THEM
Document Type and Number:
WIPO Patent Application WO2002057070
Kind Code:
A3
Abstract:
The present invention is directed to photochromic parts, objects, and articles and to methods for preparing them. The articles of the inventions have at least two layers, at least one of which is loaded with a photochromic dye. The layers are made of either the same or different materials. At least one of the layers is formed form a semi-solid polymerizable material, which comprises a reactive plasticizer and, optionally, a dead polymer, and, when used as the photochromic layer, further comprises a photochromic dye. The remaining layer(s) may be formed from liquid resins or additional semi-solid polymerizable materials.

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Inventors:
FAN SHAOBIN (US)
HOUSTON MICHAEL R (US)
SOANE DAVID S (US)
Application Number:
PCT/US2001/044628
Publication Date:
March 13, 2003
Filing Date:
November 29, 2001
Export Citation:
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Assignee:
ZMS LLC (US)
FAN SHAOBIN (US)
HOUSTON MICHAEL R (US)
SOANE DAVID S (US)
International Classes:
B29C39/10; B29C43/00; B29C43/20; G02C7/10; B29D11/00; B32B7/02; G02B5/23; B29L11/00; (IPC1-7): B29D11/00; G02B5/23; B32B33/00
Domestic Patent References:
WO2000055653A12000-09-21
Foreign References:
US5405557A1995-04-11
US6068797A2000-05-30
US5523030A1996-06-04
EP0846708A21998-06-10
US6034193A2000-03-07
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