Novel crystal modification of a diketopyrrolopyrrole pigment

Details Novel crystal modification of a diketopyrrolopyrrole pigment Novel crystal modification of a diketopyrrolopyrrole pigment

C - Chemistry, Metallurgy

09

B

C09B 57/00 (2006.01) C08K 5/00 (2006.01) C09B 67/00 (2006.01) C09B 67/22 (2006.01)

Patent

CA 2213440

A diketopyrrolopyrrole of formula (I) Image in its .beta.-modification. The novel .beta.-modification is also suitable as pigment for colouring high molecular weight organic materials. In comparison to the .alpha.-modification, it has a shade shifting towards blueish red, enhanced colour strength and chroma as well as an enhanced resistance to heat.

Dicétopyrrolopyrrole de formule (I) Image dans sa modification bêta. La nouvelle modification bêta convient également comme pigment pour colorer des matières organiques de poids moléculaire élevé. Comparativement à la modification alpha, la modification bêta se caractérise par une nuance qui tire sur le rouge bleuâtre, une intensité de couleur et une chromie accrues ainsi qu'une meilleure résistance à la chaleur.

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