Title:
HIGH-REFRACTIVE-INDEX MATERIAL HAVING HIGH ABBE NUMBER
Document Type and Number:
Japanese Patent JP2009209277
Kind Code:
A
Abstract:
To provide a polymer of high transparency which has a combination of high refractive index and a high Abbe number.
The polymer has, as its structural unit, a recurring unit having a sulfo group and a 1,4-dithiane ring, both of which are bound to each other via sulfide group bound directly to the 2- and 5-position of the dithiane ring. A method for producing the above polymer is also provided, comprising conducting a Michael addition polymerization between divinylsulfone and 2,5-dimercapto-1,4-dithiane containing more cis-form highly soluble to various solvents than trans-form.
Inventors:
OKUTSU RIE
UEDA MITSURU
ANDO SHINJI
SUGAWARA SHUICHI
UEDA MITSURU
ANDO SHINJI
SUGAWARA SHUICHI
Application Number:
JP2008054389A
Publication Date:
September 17, 2009
Filing Date:
March 05, 2008
Export Citation:
Assignee:
JSR CORP
TOKYO INST TECH
TOKYO INST TECH
International Classes:
C08G75/20; C08G75/04; C08G75/045; G02B1/04
Domestic Patent References:
| JP2005298736A | 2005-10-27 | |||
| JP2005336404A | 2005-12-08 | |||
| JP2009104087A | 2009-05-14 | |||
| JPS3813539B1 |
Attorney, Agent or Firm:
Kihei Watanabe
Yuko Tanaka
Narumi Morishima
Yuko Tanaka
Narumi Morishima
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