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Machine translation
1. (WO1992011407) METHOD FOR TINTING A HYDROPHILIC POLYMER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1992/011407    International Application No.:    PCT/US1991/009615
Publication Date: 09.07.1992 International Filing Date: 20.12.1991
Chapter 2 Demand Filed:    24.04.1992    
IPC:
D06P 1/52 (2006.01), D06P 1/673 (2006.01), D06P 3/34 (2006.01), G02C 7/02 (2006.01)
Applicants: ALLERGAN, INC. [US/US]; 2525 Du Pont Drive, Irvine, CA 92713-9534 (US)
Inventors: BHAUMIK, Debabrata; (US).
CHEN, Patrick, K.; (US)
Agent: BARRESE, Rocco, S.; Dilworth & Barrese, 333 Earle Ovington Boulevard, Uniondale, NY 11553 (US)
Priority Data:
632,466 21.12.1990 US
Title (EN) METHOD FOR TINTING A HYDROPHILIC POLYMER
(FR) PROCEDE SERVANT A TEINTER UN POLYMERE HYDROPHILE
Abstract: front page image
(EN)A hydrophilic polymer, e.g., provided as a contact lens, is tinted by a method which incorporates a reactive dye into the polymer during formation of the latter. Following physical entrainment of the reactive dye in the polymer, the polymer is contacted with an aqueous solution of a base which catalyzes the reaction of the dye with the polymer. In this way, the dye becomes permanently covalently bound to the polymer.
(FR)On teinte un polymère hydrophile, sous forme, par exemple, de lentille de contact, au moyen d'un procédé introduisant un colorant réactif dans le polymère au cours de sa fabrication. Après l'introduction physique du colorant réactif dans le polymère, celui-ci est mis en contact avec une solution aqueuse basique, catalysant la réaction du colorant et du polymère. Ainsi, le colorant est en liaison covalente permanente avec le polymère.
Designated States: CA, JP.
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, MC, NL, SE).
Publication Language: English (EN)
Filing Language: English (EN)