RESIN FOR LENS WITH HIGH REFRACTIVE INDEX AND LENS COMPOSED OF IT

Title:

RESIN FOR LENS WITH HIGH REFRACTIVE INDEX AND LENS COMPOSED OF IT

Document Type and Number:

WIPO Patent Application WO/1984/000370

Kind Code:

A1

Abstract:

A resin for lens with a high refractive index prepared by compolymerizing one or more benzenedicarboxylic acid esters substituted by halogen in the nucleus and represented by the formula (I), (wherein X represents Cl or Br, n represents 2 or 4, m represents 0 or 1, and R represents H or methyl) with one or more monofunctional monomers having a refractive index of 1.55 or more as homopolymer and being radical-polymerizable, and lens composed of it are disclosed. This resin for preparing lens has a high refractive index and is excellent in workability (such as grindability) and impact resistance. In addition, the monofunctional monomer(s) and the bifunctional monomer(s) are well compatible with each other upon copolymerization, and polymerication distortion difficultly takes place.

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Inventors:

SASAGAWA KATSUYOSHI (JP)
HYUGAJI TERUO (JP)
IMAI MASAO (JP)
KANNO KIMIO (JP)

Application Number:

PCT/JP1983/000217

Publication Date:

February 02, 1984

Filing Date:

July 07, 1983

Export Citation:

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Assignee:

MITSUI TOATSU CHEMICALS (JP)

International Classes:

C08F18/20; C08F18/22; C08F218/16; G02B1/04; (IPC1-7): C08F218/16; G02B1/04

Foreign References:

JPS5799601A	1982-06-21
JPS56145910A	1981-11-13

Other References: