公开(公告)号：IN149992B

公开(公告)日：1982-06-26

申请号：IN1014CA1978

申请日：1978-09-15

Applicant: HOECHST AG

Inventor： SPIETSCHKA E ,  URBAN M ,  PAULUS E

IPC: C09B19/02 ,  C09B67/00 ,  C09B67/04 ,  C09B67/10 ,  B02C17/14 ,  B02C19/16 ,  C09B19/00

Abstract: Coarsely crystalline crude dioxazine pigments are subjected to dry milling while maintaining their crystallinity as far as possible until the desired degree of fineness is reached and then treated with a solvent.

公开(公告)号：BR7806160A

公开(公告)日：1979-04-17

申请号：BR7806160

申请日：1978-09-20

Applicant: HOECHST AG

Inventor： PAULUS E ,  SPIETSCHKA E ,  URBAN M

IPC: C09B19/02 ,  C09B67/00 ,  C09B67/04 ,  C09B67/10 ,  C09B19/00

Abstract: Coarsely crystalline crude dioxazine pigments are subjected to dry milling while maintaining their crystallinity as far as possible until the desired degree of fineness is reached and then treated with a solvent.