Title:
REACTIVE DYE AND LENS USING THE SAME
Document Type and Number:
Japanese Patent JP2974607
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject compound, represented by a specific formula, having excellent hydrolytic resistance and copolymerizability with other raw materials and further excellent dyeing ability and useful for a contact lens, etc.
SOLUTION: This compound is represented by formula I [R1 is a (substituted) benzyl or a (substituted) phenyl], e.g. 1,4-bis(4-vinylbenzylamino)anthraquinone. Furthermore, the compound is preferably obtained by reacting, e.g. 1,4- diaminoanthraquinone with a benzyl halide represented by X-R1 (e.g. benzyl chloride), synthesizing a reactive dye precursor represented by formula II and then reacting the resultant compound with a vinylbenzyl halide (e.g. 4-vinylbenzyl chloride).
Inventors:
IMAFUKU HAJIME
MOTONO SOICHIRO
IWAMOTO EIJU
MOTONO SOICHIRO
IWAMOTO EIJU
Application Number:
JP8371696A
Publication Date:
November 10, 1999
Filing Date:
April 05, 1996
Export Citation:
Assignee:
HOOYA KK
HOOYA HERUSU KEA KK
HOOYA HERUSU KEA KK
International Classes:
B29C47/00; C08F2/01; C08F2/02; C08F2/44; C08F12/00; C08F12/28; C08F20/12; C08F20/36; C09B1/26; C09B62/80; C09B69/10; C09D17/00; G02B1/04; G02C7/04; B29K33/00; (IPC1-7): C09B69/10; C08F12/28; G02C7/04
Domestic Patent References:
| JP829741A | ||||
| JP372576A |
Attorney, Agent or Firm:
Toshio Shiozawa (1 person outside)
Toshio Shiozawa
Toshio Shiozawa
Previous Patent: MID MOUNT TYPE TRANSPLANTING MACHINE FOR RIDING
Next Patent: PROTECTIVE WALL COMBINED WITH FENCE
Next Patent: PROTECTIVE WALL COMBINED WITH FENCE