公开(公告)号：US4167634A

公开(公告)日：1979-09-11

申请号：US874789

申请日：1978-02-03

申请人： Helmut Hoch ,  Heinrich Hiller ,  Guenther Bauni

发明人： Helmut Hoch ,  Heinrich Hiller ,  Guenther Bauni

IPC分类号： C09B5/48 ,  C09B67/14

CPC分类号： C09B67/0017 ,  C09B5/48

摘要： An .alpha.-indanthrone pigment having improved tinctorial and technological properties is produced by swelling .gamma.-indanthrone in sulfuric acid of from 73 to 80 percent strength by weight at from 20.degree. to 50.degree. C. in the presence of from 0.1 to 20% by weight, based on indanthrone, of a hydroxylammonium salt, a hydrazinium salt, amidosulfonic acid, urea, a salt of urea, formaldehyde or paraformaldehyde or a mixture of these. After precipitation in water which may or may not contain a surfactant, at below 50.degree. C., an .alpha.-indanthrone pigment of high tinctorial strength is obtained, which gives clear and pure colorations and is easily dispersible.

摘要翻译： 具有改善的着色和技术性能的α-阴丹酮颜料通过在20至50℃下在0.1至20重量％存在下将硫丹中的γ-阴丹酮溶解至73至80重量％ 基于阴丹酮的羟基铵盐，腙盐，酰胺磺酸，脲，脲，甲醛或多聚甲醛的盐或它们的混合物。 在可能含有或不含有表面活性剂的水中沉淀后，在低于50℃下，得到高着色强度的α-阴丹酮颜料，其得到澄清和纯色，并且易于分散。