Title:
METHOD FOR COLOURING A TRANSPARENT ARTICLE MADE OF POLYCARBONATE AND RESULTING ARTICLE
Document Type and Number:
WIPO Patent Application WO2000061857
Kind Code:
A8
Abstract:
The invention concerns a method which consists in irradiating at least one face of the article with UV radiation, causing the article to be photodegraded over a thickness of at least 1 mu m, and in contacting the irradiated face of the article with a colouring agent so as to diffuse the colouring agent in the entire thickness of the photodegraded surface layer of the article. The invention is useful for optical and ophthalmologic articles.
Inventors:
BAILLET GILLES (FR)
Application Number:
PCT/FR2000/000792
Publication Date:
August 08, 2002
Filing Date:
March 30, 2000
Export Citation:
Assignee:
ESSILOR INT (FR)
BAILLET GILLES (FR)
BAILLET GILLES (FR)
International Classes:
B29C59/16; B29C67/00; D06P1/00; G02C7/02; D06P3/00; D06P5/00; D06P5/20; B29C35/08; D06P3/52; (IPC1-7): D06P5/20; D06P5/22; D06P3/52; G02C7/02
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