Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-09-15
1977-03-22
Thomas, Jr., James O.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260465R, 260473F, 260515R, 260515A, 260607A, 260611A, 260669R, 8 1W, C07C14324
Patent
active
040137139
ABSTRACT:
New diarylvinyl-dihydrophenanthrene compounds of the formula ##STR1## wherein R.sub.1, R.sub.1 ', R.sub.2, R.sub.2 ', R.sub.3 and R.sub.3 ' are identical or different and represent hydrogen, alkyl with 1 to 12 carbon atoms, aralkyl with 1 to 4 carbon atoms in the alkyl part, alkoxy with 1 to 18 carbon atoms, phenyl-alkoxy with 1 to 4 carbon atoms in the alkoxy part, alkenyloxy with 3 to 4 carbon atoms, halogen, nitrile, a sulphonic acid group or its salts or functional derivatives, a carboxyalkoxy or carboxyl group or their salts or functional derivatives, or a sulphone group. These compounds are particularly useful as optical brighteners.
REFERENCES:
patent: 3177208 (1965-04-01), Stilz et al.
Luthi Christian
Weber Kurt
Almaula Prabodh I.
Ciba-Geigy Corporation
Jorda Karl F.
McC. Roberts Edward
Siegel A.
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