Composition for optical material

Details Composition for optical material Composition for optical material

2006-03-07

2006-03-07

Truong, Duc (Department: 1711)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From sulfur-containing reactant

C528S377000, C528S403000, C525S328500, C525S535000

Reexamination Certificate

active

07009031

ABSTRACT:
The composition for optical materials of the present invention contains at least one compound represented by the following Formula 1:wherein R1, R2and R3are each independently C1–C10hydrocarbyl or hydrogen; X1, X2and X3are each independently S, Se or Te; Y1, Y2and Y3are each independently —Sa—[(CH2)bS]cH, a is an integer from 0 to 2, b is an integer from 0 to 4, and c is an integer from 0 to 2, and a compound reactive to the compound of Formula 1. A resin produced by curing a composition containing the compound of Formula 1 by polymerization has a high refractive index, and suitable as various optical materials.

REFERENCES:
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patent: 1 006 374 (2000-06-01), None
Levesque et al.; Dithioacetic acid trimers, Lab. Phys.-Chim., Univ. Maine, Le Mans, Fr, Tetrahedron Letters (40), Chem Abstract 90: 152138.
Engler et al.; Chalcogenolates; Univ. Mainz, Mainz, Germany, Chem Abstract 77: 75182.
Shell Internationale Research; Heterocyclic polymercaptans; Chem Abstract 62: 91040.

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