B - Operations – Transporting – 29 – D
Patent
B - Operations, Transporting
29
D
18/106
B29D 11/00 (2006.01) B29C 33/62 (2006.01) G02B 1/04 (2006.01)
Patent
CA 2020196
An improved method for manufacturing contact lenses wherein monomer or comonomer mixture is placed into a mold cavity and subjected to polymerization conditions to form a polymerized shape of desired shape wherein the improvement comprises the inclusion of a release agent in the monomeric mixture wherein said release agent comprises less than about three weight percent of said monomeric mixture and is chosen from a mixture of hydrophilic polymers with lipophilic compounds.
éthode améliorée pour la fabrication de lentilles cornéennes dans laquelle un mélange monomère ou comonomère est placé dans une cavité de moule et soumis à des conditions de polymérisation afin de façonner une forme polymérisée prédéterminée. L'amélioration consiste en l'inclusion d'un démoulant dans le mélange monomère, lequel démoulant constitue moins d'environ trois pour cent en poids dudit mélange monomère et est choisi parmi un mélange de polymères hydrophiles avec des composés lipophiles.
Blank Christopher E.
Hahn Dennis
Johansson Gary A.
Ruscio Dominic V.
Bausch & Lomb Incorporated
Osler Hoskin & Harcourt Llp
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