Pyrazoline compounds and method of whitening

Details Pyrazoline compounds and method of whitening Pyrazoline compounds and method of whitening

Filed on

1986-11-28

Date issued

1989-03-28

Examiner

Ramsuer, Robert W.

Patent Class

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

SubClass

Organic compounds

SubSubClass

Heterocyclic carbon compounds containing a hetero ring...

Other Related Categories

8109, 25230127, C07D23106, D06L 306, D06L 312

Type

Patent

Status

active

Patent number

048165905

Description

ABSTRACT:
The invention relates to pyrazoline compounds of formula ##STR1## wherein R.sub.1 is hydrogen or methyl, R.sub.2 and R.sub.3 are each independently of the other methyl, ethyl or hydroxyethyl, R.sub.4 is hydrogen or chlorine, R.sub.5 and R.sub.6 are each independently of the other hydrogen or methyl, R.sub.7 is hydrogen, methyl or phenyl, n is 0 or 1, with the proviso that, if n is 0 and R.sub.4 to R.sub.7 are hydrogen, R.sub.2 is methyl and R.sub.3 is hydroxyethyl, and X.sup..crclbar. is a C.sub.1 -C.sub.3 alkanoate, C.sub.1 -C.sub.4 alkanephosphonate, C.sub.1 -C.sub.4 alkanesulfonate, phosphite, sulfamate or glycolate anion and, if R.sub.1 is methyl, X.sup..crclbar. is also a methosulfate, chloride or bromide ion, to the preparation of said compounds, to the use thereof as fluorescent whitening agents, and to novel hydrazine intermediates of formula ##STR2## wherein R.sub.2 and R.sub.3 are methyl, ethyl or hydroxyethyl, and the acetone hydrazones and salts thereof.

REFERENCES:
patent: 3925367 (1975-12-01), Boehmke et al.
patent: 4183853 (1980-01-01), Schroeder
patent: 4263431 (1981-04-01), Weber et al.
Morrison et al., Organic Chemistry, 4th Ed., Alyn and Bacon, Boston (1983), pp. 919, 920.

Affiliated with

Also associated with

Rating

Pyrazoline compounds and method of whitening does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Pyrazoline compounds and method of whitening, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pyrazoline compounds and method of whitening will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1660503