反应详情

温度

190 °C

4.3 g of quinaldine and 8.6 g of tetrachlorophthalic anhydride in 100 ml of 8-hydroxymethyltricyclo[5.2.1.02,6 ]decane [TCD alcohol M®, ex Hoechst] are stirred and heated under nitrogen to 190° C. in a 350 ml glass apparatus equipped with cooler, thermometer, gas inlet pipe and semi-anchor stirrer. The mixture is stirred for 4 hours at 190° C. and the resultant yellow suspension is cooled to 40° C., diluted with 150 ml of methanol and filtered. The filter cake is washed with methanol until colourless and the yellow pigment is dried at 80° C in a vacuum drying cabinet, affording 3.9 g of the yellow quinophthalone pigment of formula ##STR2## which is incorporated in powder form into printing inks and varnishes and gives strong, yellow colorations of good fastness properties.

1. customequipped with cooler, thermometer, gas inlet pipe and semi-anchor stirrer
2. temperaturethe resultant yellow suspension is cooled to 40° C.
3. filtrationfiltered
4. washThe filter cake is washed with methanol until colourless and the yellow pigment
5. customis dried at 80° C in a vacuum
6. customdrying cabinet