公开(公告)号：DE1935297A1

公开(公告)日：1971-01-14

申请号：DE1935297

申请日：1969-07-11

Applicant: DEGUSSA

Inventor： KLEINSCHMIT DIPL-CHEM DR

IPC: C07C409/34

Abstract: Aliphatic or aromatic acid chlorides are reacted with aq. solns. of H2O2 or alkali metal peroxides in alkaline medium. Before the reacting begins, anhydrous non-ionising halogen cpds. of Gp 3 to 6 elements are added to the acid chlorides. Preferably, 0.1 to 10 wt.% (relative to acid chloride) halogen cpd. is added. Preferably 0.5-4 wt.%. Advantages lie in the increased speed and safety of the process, in the high yields and purity of the prod.

公开(公告)号：DE3861111D1

公开(公告)日：1991-01-03

申请号：DE3861111

申请日：1988-05-27

Applicant: DEGUSSA

Inventor： KISS DIPL-CHEM DR ,  KLEINSCHMIT DIPL-CHEM DR ,  HANICH DIPL-CHEM DR ,  HALBRITTER GUENTER DIPL ING ,  HORST JENNY

IPC: C09C3/06 ,  C09C1/00 ,  C09C1/40 ,  C09C1/42

Abstract: Encapsulation pigments comprising chromophoric particles embedded in glaze-stable casings are prepared by means of calcination from the appropriate initial products. High yields and strong color intensities are obtained if the chromophoric substance or its initial compounds are bound in and/or to a zeolite and are calcined in this form with the remaining constituents.