Title:
RESIN FOR PREPARING LENS WITH HIGH REFRACTIVE INDEX AND LENS PREPARED THEREFROM
Document Type and Number:
WIPO Patent Application WO/1986/003500
Kind Code:
A1
Abstract:
A resin for preparing lens with high refractive index, which is prepared by copolymerizing one or more benzenedicarboxylic acid esters substituted by halogen atom(s) in the nucleus and represented by formula (I), (wherein X represents Cl or Br, n represents 2 or 4, m represents or 0 or 1, and R represents H or methyl) with one or more radical-polymerizable monofunctional monomers having an aromatic ring and having a refractive index of 1.55 or more as a homopolymer, and lens prepared from it are disclosed. This resin has a high refractive index and excellent workability (for example, grinding) and impact resistance. In addition, upon copolymerization, the monofunctional monomer and the bifunctional monomer are so well compatible with each other that polymerization distortion difficulty takes place.
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Inventors:
SASAGAWA KATSUYOSHI (JP)
HYUGAJI AKIO (JP)
IMAI MASAO (JP)
HYUGAJI AKIO (JP)
IMAI MASAO (JP)
Application Number:
PCT/JP1983/000218
Publication Date:
June 19, 1986
Filing Date:
July 07, 1983
Export Citation:
Assignee:
SASAGAWA KATSUYOSHI
HYUGAJI AKIO
IMAI MASAO
HYUGAJI AKIO
IMAI MASAO
International Classes:
C08F18/00; C08F12/00; C08F18/14; C08F18/18; C08F18/20; C08F18/22; C08F20/22; C08F20/26; C08F212/14; C08F218/16; C08F220/22; C08F220/30; G02B1/04; G02C7/00; (IPC1-7): C08F218/16; G02B1/04
Foreign References:
| JPS5799601A | 1982-06-21 | |||
| JPS56145910A | 1981-11-13 |
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