Organic pigment with high transparency and hydrophobicity

Details Organic pigment with high transparency and hydrophobicity Organic pigment with high transparency and hydrophobicity

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.

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