Episulfide compound

Details Episulfide compound Episulfide compound

1997-01-13

1999-08-31

Dawson, Robert

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

Synthetic resins

From sulfur-containing reactant

528 96, 528 99, 528380, 528393, C08G 7508

Patent

active

059455047

ABSTRACT:
An episulfide which has an alicyclic, aromatic or heterocyclic skeleton and has two or more moieties represented by the formula ##STR1## wherein X is S or O, and S is in an amount of 50% or more, on the average, of the total of S and O constituting a three-membered ring. A cured material obtained by polymerizing this episulfide compound is a desirable optical material for various uses, particularly as a lens material for spectacles.

REFERENCES:
patent: 5182340 (1993-01-01), Hefner et al.
Chemicals Abstracts, vol. 115, No. 37, 1991, Columbus, Ohio, Abstract No. 137564z, p. 57, col. 2, XP002028341 of JP 00 381 321 A (Mitsui Toatsu Chemicals).

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