Title:
PLASTIC LENS HAVING HIGH REFRACTIVE INDEX
Document Type and Number:
Japanese Patent JPS60249101
Kind Code:
A
Abstract:
PURPOSE: To obtain a lens having high refractive index and higher impact strength by using a radically polymerizable polyfunctional monomer such as divinyl benzene as the vinyl monomer.
CONSTITUTION: The lens comprises a copolymer of a monomer mixture consisting of 50W90wt%, pref. 60W70wt% component A and 10W50wt%, pref. 30W 40wt% component B, wherein said component A consists of a di- or tri(meth) acrylate formed by the reaction of mono(meth)acrylate having a halogen substituted arom. ring with the functional groups of a polyfunctional compd. having 2W3 functional groups, and said component B is a radically polymerizable polyfunctional monomer C except A or a monomer mixture consisting of ≥20wt% C with other vinyl monomer.
Inventors:
FUKUDA TADANORI
SAITOU MASAMI
SAKAMOTO SADAYUKI
SAITOU MASAMI
SAKAMOTO SADAYUKI
Application Number:
JP10447684A
Publication Date:
December 09, 1985
Filing Date:
May 25, 1984
Export Citation:
Assignee:
TORAY INDUSTRIES
International Classes:
C08F20/00; C08F20/22; C08F20/26; C08F220/22; C08F220/30; G02B1/04; (IPC1-7): C08F220/22; C08F220/30
Domestic Patent References:
| JPS6051706A | 1985-03-23 |
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