Quinophenanthrine diones fluorescent whitening agents

Details Quinophenanthrine diones fluorescent whitening agents Quinophenanthrine diones fluorescent whitening agents

2007-11-13

2007-11-13

Aulakh, Charanjit S. (Department: 1625)

Compositions

Organic luminescent material containing compositions

Optical brightening compositions

C546S056000, C546S057000, C252S301260

Reexamination Certificate

active

11514502

ABSTRACT:
Tetrahydro- and dihydroquinophenanthrine dione fluorescent whitening agents and a process for their preparation are provided.

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