Thioether functional oligomeric polythiols and articles...

Details Thioether functional oligomeric polythiols and articles... Thioether functional oligomeric polythiols and articles...

2007-05-04

2009-06-30

Gulakowski, Randy (Department: 1796)

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

Synthetic resins

From sulfur-containing reactant

C528S373000, C528S374000, C528S375000, C528S376000

Reexamination Certificate

active

07553925

ABSTRACT:
Provided is a thioether-functional, oligomeric polythiol having pendant hydroxyl functional groups, prepared by reacting together:(a) a compound having at least two thiol functional groups;(b) a hydroxyl functional compound having triple bond functionality; and(c) a compound having at least two double bonds.Further provided is a thioether-functional, oligomeric polythiol having pendant hydroxyl functional groups, prepared by reacting together:(a) a compound having at least two thiol functional groups, prepared by reacting together:(1) a dithiol, and(2) a compound having at least two double bonds;(b) a hydroxyl functional compound having triple bond functionality; and optionally(c) an additional compound having at least two double bonds, which may be the same as or different from the compound (2).Optical articles prepared from the thioether-functional, oligomeric polythiols are also provided.

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