C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/175.2, 8/26.
C09B 29/00 (2006.01) A23L 1/275 (2006.01) C09B 29/16 (2006.01) D06P 1/06 (2006.01) D06P 1/39 (2006.01) D21H 21/28 (2006.01)
Patent
CA 1244408
ABSTRACT OF THE DISCLOSURE Salts of phenylazonaphthyl sulfonic acids useful as blue-red colorants for textile fabrics, cellulosic fibers and edible compositions are prepared by diazotizing an aniline sulfonic acid and coupling the resulting diazo compound to a 1-hydroxynaphthalene mono- or disulfonic acid. The new colorants have the structural formula: Image wherein R and R1 independently represent non-tertiary C1 to C4 - alkyl; X represents hydrogen, ammonium or any physiologically acceptable metal cation; and Y represents 1 or 2.
479662
Cook Wayne L.
Huth Robert P.
Fetherstonhaugh & Co.
Noveon Ip Holdings Corp.
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