Bis-benzoxazolyl-naphthalenes as optical brighteners

Details Bis-benzoxazolyl-naphthalenes as optical brighteners Bis-benzoxazolyl-naphthalenes as optical brighteners

1975-02-07

1976-11-23

Rush, Raymond V.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

106176, 260 458NZ, 260307C, 260456R, 260456A, 260456P, C07D26356

Patent

active

039936597

ABSTRACT:
1,4-Bis-benzoxazolyl-(2)'-naphthalenes of the formula ##SPC1##
Wherein R denotes optionally non-chromophorically substituted alkyl with 1 to 18 carbon atoms, alkenyl with 2 to 4 carbon atoms, cycloalkyl, aryl or aralkyl, Y denotes hydrogen, alkyl with 1 to 4 carbon atoms, halogen, carboxyl, carbalkoxy with 2 to 5 carbon atoms or the radical --SO.sub.2 R', wherein R' represents optionally non-chromophorically substituted alkyl with 1 to 18 carbon atoms, cycloalkyl, alkenyl with 2 to 4 carbon atoms, aryl or aralkyl, and X and X' independently of one another denote hydrogen, chlorine or alkyl with 1 to 4 carbon atoms. These new compounds are useful as optical brighteners for organic materials, especially for polyesters, polyvinyl chloride, polystyrene, polyacrylonitrile and cellulose acetates.

REFERENCES:
patent: 3644345 (1972-02-01), Siegrist et al.
patent: 3682946 (1972-08-01), Liechti
patent: 3767664 (1973-10-01), Weber

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