Cyano-distyrylbenzenes

Details Cyano-distyrylbenzenes Cyano-distyrylbenzenes

Filed on

1974-06-10

Date issued

1976-05-25

Examiner

Gotts, Lewis

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

SubSubClass

C-metal

Other Related Categories

81155, 8116R, 8192, 260465F, 260465G, 260507R, 260512R, 25230116, C07C12160

Type

Patent

Status

active

Patent number

039593401

Description

ABSTRACT:
The invention concerns new asymetrical distyrylbenzenes and a process for their preparation, these compounds having the formula ##SPC1##
Wherein R.sub.1 and R.sub.2 can be identical or different from one another and denote hydrogen, chlorine or fluorine, lower alkyl or lower alkoxy groups, R.sub.a represents hydrogen, the nitrile group or a carboxyl group, its salts, esters or amides, M denotes a hydrogen, alkali, alkaline earth, ammonium or amine salt ion, m denotes the numbers 1 or 2 and n denotes the numbers 1, 2 or 3, with the proviso that I. at least one of the substituents R.sub.1, R.sub.2 and R.sub.a is different from hydrogen and II. in the case where R.sub.a is different from hydrogen, R.sub.2 represents hydrogen.
The new compounds are valuable optical brightening agents, especially in combination with detergents.

REFERENCES:
patent: 3822305 (1974-07-01), Pintschovius et al.

Affiliated with

Also associated with

Rating

Cyano-distyrylbenzenes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Cyano-distyrylbenzenes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyano-distyrylbenzenes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-905505