C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
260/175, 400/709
C09B 43/00 (2006.01) C08K 5/23 (2006.01) C09B 29/00 (2006.01) C09B 41/00 (2006.01) C09B 67/00 (2006.01)
Patent
CA 2037135
The present invention provides a process for the production of a metallized azo pigment having the formula (see formula one) in which R and R1, independently, are hydrogen, halogen or alkyl; X1 is SO3.THETA. or CO2.THETA.; and M is Ca, Sr, Mn or Ba; comprising coupling, at a pH value below 7.0, a diazotized amine of formula Image in which R, R1 and X1 have their previous significance, with with a coupling component of formula Image to produce an azo dyestuff having the formula -2- Image in which R, R1 and X1 have their previous significance, and Y is an alkaline earth metal or ammonium ion; and laking the dyestuff of formula IV during or after its production with one or more salts of a metal M wherein M has its previous significance. Also disclosed is a new modification of a pigment of formula I.
Boyd Alistair Brodie
Mordente Michael
Ag Ciba-Geigy
Ciba Specialty Chemicals Holding Inc.
Fetherstonhaugh & Co.
LandOfFree
Production of pigments does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Production of pigments, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Production of pigments will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-2071318