Isobutanol → Quinacridone

Participants

Reaction Conditions

Reaction Steps

A mixture of 70 weight parts of “CROMOPHTAL Jet Magenta DMQ (produced by Ciba Japan Co., Ltd.)”, (C.I. Pigment Red 122), 290 weight parts of isobutanol and 380 weight parts of water was placed into a reaction vessel with a stirrer and stirred at 130° C. for 7 hours. Thereafter, the resulting mixture was cooled to room temperature, and the resulting precipitates were filtered off, washed with hot water, dried and pulverized to obtain a quinacridone pigment. This quinacridone pigment was designated as Quinacridone Pigment 6. The number average primary particle size, major axis direction length, minor axis direction length and a ratio of a major axis direction length to minor axis direction length of Quinacridone Pigment 6 are as shown in Table 1.

Provenance & Evidence