Title:
COMPOSITION FOR OPTICAL MATERIAL
Document Type and Number:
Japanese Patent JP3738817
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a composition having high Abbe number and high refractive index and useful for optical lens such as plastic lens for eyeglass by including an inorganic compound having a specific atom and a compound reactive with the inorganic compound.
SOLUTION: This composition contains (A) an inorganic compound containing sulfur and/or selenium atoms in an amount of preferably ≥30 wt.% (e.g. sulfur) and (B) a compound reactive with the component A and preferably containing a structure of the formula (R1 is a 1-10C hydrocarbon group; R2 to R4 are each H or a 1-10C hydrocarbon group; Y is O, S, Se or Te; (m) is 1-5; (n) is 0-5; (p) is 0 or 1) in the molecule [e.g. bis(β-epithiopropyl)sulfide]. Preferably, the contents of the component A and the component B are ≥1 wt.% and ≥10 wt.%, respectively, the sum of the components A and B is ≥30 wt.% and the amount of the component A is 1-50 pts.wt. based on 100 pts.wt. of the component B.
Inventors:
Yuichi Yoshimura
Motoharu Takeuchi
Hiroshi Horikoshi
Junya Hayakawa
Teruo Kamura
Motoharu Takeuchi
Hiroshi Horikoshi
Junya Hayakawa
Teruo Kamura
Application Number:
JP2000111609A
Publication Date:
January 25, 2006
Filing Date:
April 13, 2000
Export Citation:
Assignee:
Mitsubishi Gas Chemical Co., Ltd.
International Classes:
C08G75/08; G02C7/02; C08G75/06; C08G75/14; C08G79/00; C08L81/02; C08L81/04; G02B1/04; (IPC1-7): C08G75/06; C08G75/14; C08G79/00; C08L81/02; C08L81/04; G02B1/04; G02C7/02
Domestic Patent References:
| JP2001002933A |
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