| 摘要 |
<p>PURPOSE:To improve noncohesiveness, crystal stability and fluidity by mixing a specific compound with C. I. Pigment Red 177. CONSTITUTION:C. I. Pigment Red 177 is reacted with paraformaldehyde and (N-alkyl)monochloroacetamide or (N-alkyl-)3-chloropropionamide in polyphosphoric acid or concentrated sulfuric acid to obtain a compound of formula I (wherein R3 is H or lower alkyl; and each of k and n is 1 or 2). This compound is reacted with a primary or secondary amino compound in water or an inert solvent at 60-150 deg.C to obtain a compound of formula II (wherein each of R1 and R2 is H, unsubstituted or substituted alkyl or cycloalkyl provided that R1 and R2 may form a heterocycle containing N, O or S). 0.3-30 pts.wt. compound of formula II is mixed with 100 pts.wt, C. I. Pigment Red 177 of formula III.</p> |
