Title:
OPTICAL MATERIAL AND POLYMERIZABLE SULFUR-CONTAINING ADAMANTANE COMPOUNDS
Document Type and Number:
WIPO Patent Application WO/2003/081295
Kind Code:
A1
Abstract:
The invention relates to an optical material suitable for lenses of eyeglasses and so on, which exhibits a high refractive index, a high Abbe number, and excellent heat resistance and is excellent in workability to generate little uncomfortable odor in machining such as grinding or polishing. The optical material is characterized by consisting of a polymer comprising units derived from a polymerizable sulfur-containing adamantane compound bearing in the molecule (a) at least one adamantyl group, (b) at least one polymerizable functional group, and (c) at least one sulfur atom.
Inventors:
YAMAMOTO HIROMASA (JP)
TAKENAKA JUNJI (JP)
SAI MASAKAZU (JP)
TAKENAKA JUNJI (JP)
SAI MASAKAZU (JP)
Application Number:
PCT/JP2003/003588
Publication Date:
October 02, 2003
Filing Date:
March 25, 2003
Export Citation:
Assignee:
TOKUYAMA CORP (JP)
YAMAMOTO HIROMASA (JP)
TAKENAKA JUNJI (JP)
SAI MASAKAZU (JP)
YAMAMOTO HIROMASA (JP)
TAKENAKA JUNJI (JP)
SAI MASAKAZU (JP)
International Classes:
C07C327/22; C08F20/38; C08G18/38; G02B1/04; (IPC1-7): G02B1/04; C07C323/12; C07C327/22; C08F20/38; C08G18/38; C08G18/75
Foreign References:
| EP1099721A1 | 2001-05-16 | |||
| JP2002082203A | 2002-03-22 | |||
| JP2001042534A | 2001-02-16 |
Attorney, Agent or Firm:
Suzuki, Shunichiro (Nishigotanda 7-chome Shinagawa-ku, Tokyo, JP)
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