Process for the preparation of sulpho-free triphenyl-methane dye

Details Process for the preparation of sulpho-free triphenyl-methane dye Process for the preparation of sulpho-free triphenyl-methane dye

1989-12-11

1991-05-07

Waddell, Frederick E.

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

Organic compounds

Acyclic carbon bonded directly to three benzene rings or to...

552114, 552302, 552304, 552113, C09B 1110, C07C 5004

Patent

active

050138570

ABSTRACT:
Process for the preparation of sulpho-free triphenylmethane dyestuffs of the formula ##STR1## in which R.sup.1 -R.sup.3 denote hydrogen, C.sub.1 -C.sub.6 -alkyl, preferably methyl, or halogen, preferably chlorine,

REFERENCES:
patent: 1470555 (1923-10-01), Craver
patent: 4495104 (1985-01-01), Imada et al.
patent: 4559177 (1985-12-01), Okutani et al.
patent: 4874752 (1989-10-01), Terao et al.
O. Fischer, Ber. Dtsch. Chem. Ges. 10, 1 624 (1877), 11, 950 (1878), 14, 2 520 (1881).
O. Fischer, Ann. d. Chem. 206, 129 (1881).

Affiliated with

Also associated with

Rating

Process for the preparation of sulpho-free triphenyl-methane dye does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of sulpho-free triphenyl-methane dye, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of sulpho-free triphenyl-methane dye will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-940751