Title:
POLYMER FOR OPTICAL MATERIAL AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH05148340
Kind Code:
A
Abstract:
PURPOSE:To obtain the subject polymer of a high refractive index and a low dispersity by incorporating a plurality of specified skeletons in the structure and specifying the bonds among the skeletons. CONSTITUTION:The objective polymer has a 2,5-dimethyl-1,4-dithiane skeleton of formula I and a 1,3,5-trimethyl-cyclohexane skeleton of formula II in the structure, and part or the whole of the bonds between the skeletons are thiourethane bonds.
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Inventors:
OKADA REISUKE
OKUBO TAKESHI
KAMISAKA MASAHISA
OKUBO TAKESHI
KAMISAKA MASAHISA
Application Number:
JP25049491A
Publication Date:
June 15, 1993
Filing Date:
September 03, 1991
Export Citation:
Assignee:
HOYA CORP
International Classes:
C08G18/30; C08G18/38; C08G18/73; C08G18/75; G02B1/04; G02B5/20; G02B6/00; G02C7/02; (IPC1-7): C08G18/38; C08G18/75; G02B1/04; G02B5/20; G02B6/00; G02C7/02
Attorney, Agent or Firm:
Toshio Shiozawa