Title:
【発明の名称】改良型着色コンタクトレンズ及びその製造方法
Document Type and Number:
Japanese Patent JP2877880
Kind Code:
B2
Abstract:
An improvement in a process for preparing a contact lens tinted over at least a portion of its surface, having the steps of forming a tinting solution having a reactive dyestuff and applying the tinting solution to a polymeric hydrogel contact lens material, wherein the improvement comprises adding an effective amount of an ammonium quaternary salt to the tinting solution before the applying step.
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Inventors:
UIRIAMU EMU HAN
KAI SHII SUU
KAI SHII SUU
Application Number:
JP6016090A
Publication Date:
April 05, 1999
Filing Date:
March 13, 1990
Export Citation:
Assignee:
NOBARUTEISU AG
International Classes:
G02C7/04; D06P1/00; D06P1/66; D06P3/00; G02C7/02; G02C13/00; (IPC1-7): G02C7/04; D06P3/00
Domestic Patent References:
| JP5846319A | ||||
| JP5943176A |
Attorney, Agent or Firm:
Hajime Tsukuni (3 outside)