文献类型：专利

英文题名：Process for preparing DPP pigment, involves heating and refluxing mixing amyl alcohol sodium, quenching metal sodium with water solution of methanol, cooling to room temperature, filtering and drying

作者：SHEN Y;WANG X;ZHANG Y;WANG H;SONG W;WANG J;WANG C

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN100334161-C

公开日：2007-08-29

语种：英文

收录：DERWENT

摘要：NOVELTY - The preparation process of DPP pigment includes the main steps of: heating and refluxing the mixing comprising tert-amyl alcohol sodium, compound III and compound IV for 4-10hr, quenching metal sodiumwith water solution of methanol, cooling to room temperature, filtering and drying to obtain coarse pigment product; refluxing the obtained coarse pigment product in organic solvent for 3-18 hr, filtering and washing to obtain refined pigment; and finally mixing the refined pigment, compound V and surfactant, refluxing the mixture in organic solvent for 1-12 hr, filtering, water washing, drying and crushing to obtain destination product. Compared with available technology, the present invention has the advantages of high coarse pigment yield, and high safety and use performance of the pigmentproduct.