C - Chemistry – Metallurgy – 09 – B
Patent
C - Chemistry, Metallurgy
09
B
C09B 35/22 (2006.01) B41M 5/00 (2006.01) C08K 5/3447 (2006.01) C09B 35/033 (2006.01) C09B 41/00 (2006.01) C09D 11/00 (2006.01) G02B 5/22 (2006.01) G03G 9/09 (2006.01)
Patent
CA 2400877
Pigment Yellow 180 having excellent transparency is produced by a process which comprises diazotizing 1,2-bis(2-aminophenoxy)ethane and coupling the resultant diazo ingredient with 5-acetoacetylaminobenzimidazolone, wherein the 5-acetoacetylaminobenzimidazolone used as a coupling ingredient is in the form of slurried fine particles.
Selon l'invention, on obtient du pigment jaune 180 d'une grande transparence selon un procédé qui consiste à diazoter du 1,2-bis(2-aminophénoxy)éthane et à coupler l'ingrédient diazo ainsi obtenu avec de la 5-acétoacétylaminobenzimidazolone, cette 5-acétoacétylaminobenzimidazolone utilisée en tant qu'ingrédient de couplage se présentant sous la forme d'une bouillie à fines particules.
Hashimoto Isao
Ohsawa Hiroshi
Ohtsuki Kohei
Okazaki Tomonori
Shiga Manabu
Clariant International Ltd
Fetherstonhaugh & Co.
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