Fluorescent brighteners, methods of preparation thereof,...

Details Fluorescent brighteners, methods of preparation thereof,... Fluorescent brighteners, methods of preparation thereof,...

2005-11-21

2009-10-27

Desai, Rita J (Department: 1625)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

active

07608715

ABSTRACT:
A compound of Formula (I)wherein R1, R2, and R3are independently at each occurrence hydrogen, a halogen, a cyano functionality, a C1-C20aliphatic functionality, a C3-C10cycloaliphatic functionality or a C3-C20aromatic functionality, with the proviso that R2and R3are not hydrogen when R1is a methyl or hydrogen; R4and R5are independently at each occurrence hydrogen, a halogen, a cyano functionality, a C1-C20aliphatic functionality, a C3-C10cycloaliphatic functionality or a C3-C10aromatic functionality; R7and R8are independently at each occurrence, a halogen, a cyano functionality, a C1-C20aliphatic functionality, a C3-C10cycloaliphatic functionality or a C3-C10aromatic functionality; R6is a C2-C20aliphatic functionality, a C3-C10cycloaliphatic functionality or a C3-C20aromatic functionality; and “n” and “m” are each independently integers having a value of 0 to 3.

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