Basf Corporation

Warner-lambert Company

Basf Wyandotte Corporation

Floyd G Spence

Robert J Allen

Louis R De Alvare

James N Wemple

Reinhard J Sappok

Anand S Sharangpani

Gregory L Karrick

Louis Rolando De Alvare

Brian D Teunis

Shrikishna G Sharangpani

Reddish-brown to yellow shade colorants suitable for ribbon and ball point inks are produced from the glassy waste by-product of pararosaniline manufacture by slurrying the residue in mineral acid, diazotizing, and coupling. the resulting colorants are useful in preparing inks.

Azo colorants for ball point pen and ribbon inks

Pigmentary Opal Sulfate is made by combining triphenylpararosaniline (Opal Blue) with a dilute acid. The pigmentary Opal Sulfate is a substitute for Alkali Blue. The most preferred process for producing the pigmentary Opal Sulfate involves drowning a solution of Opal Blue in a highly agitated solution of dilute sulfuric acid.

Rigmentary salt of a triphenylmethane compound and process for making

An improved process for the preparation of 3-chloro-2,4,5-trifluorobenzoic acid is described which involves reaction of a diester of 3,4,5,6-tetrafluoro-1,2-benzenedicarboxylic acid with a substituted amine to afford 3-amino-2,4,5-trifluorobenzoic acid followed by subsequent conversion of the amio intermediate into 3-chloro-2,4,5-trifluorobenzoic acid.

Process for the synthesis of 3-chloro-2,4,5-trifluorobenzoic acid

Substantially pure triarylmethane dyestuff salts free of contamination by arylamines are prepared by isolating in relatively pure form, the carbinol base corresponding to the dyestuff followed by salt formation by reaction with the appropriate acid. The resulting colorants are highly suitable for ball-point pen, printing, and ribbon inks.

Colorants for ball-point pen and ribbon inks

Reddish-brown to yellow shade colorants suitable for ribbon and ball point inks are produced from the glassy waste by-product of pararosaniline manufacture.

Colorants for ball point pen and ribbon inks derived from pararosaniline

This invention relates to a process for the separation of a nitrated substance from a spent nitrating acid wherein said nitrated substance contains polar groups selected from the group consisting of --SO.sub.3 H, --OH, --SH --CO.sub.2 H, --OSO.sub.3 H, and --OP(OH).sub.2 and their salts. This is achieved by:

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Holland, MI, United States of America

Floyd G Spence