公开(公告)号：JPH01275665A

公开(公告)日：1989-11-06

申请号：JP5803589

申请日：1989-03-13

Applicant: BASF AG

Inventor： BUERUNAA OSUTERUTAAKU ,  NORUBERUTO MURONGA ,  URURITSUHI GURESURE

IPC: C09C1/36 ,  C09C1/00 ,  C09C1/40 ,  C09C3/00 ,  C09C3/06 ,  C09D5/36

Abstract: To prepare especially bluish nacreous pigments, TiO2-coated mica pigments are treated with ammonia at from 750 to 850 DEG C with constant agitation. The optical layer thickness of the titanium dioxide (TiO2) coating is from 50 to 100 nm or from 300 to 340 nm.

公开(公告)号：JPS63317559A

公开(公告)日：1988-12-26

申请号：JP13453288

申请日：1988-06-02

Applicant: BASF AG

Inventor： BUERUNAA OSUTERUTAAKU

IPC: A61K8/30 ,  A61K8/19 ,  A61K8/26 ,  A61Q1/02 ,  C08K3/22 ,  C09C1/00 ,  C09C1/22 ,  C09C1/24 ,  C09C1/40 ,  C09D11/02

Abstract: A plateletlike two-phase pigment which has a core with a hematite structure of the composition AlxFe2-xO3 where x is from 0.02 to 0.5, and an outer layer with a spinal structure of the composition AlyFe3-yO4+z where y is from 0.03 to 0.75 and z is from 0 to 0.5, can be prepared by a hydrothermal treatment of plateletlike AlxFe2-xO3 pigments (x from 0.02 to 0.5) in the presence of a reducing agent dissolved in the aqueous phase.

公开(公告)号：JPS589827A

公开(公告)日：1983-01-20

申请号：JP10698582

申请日：1982-06-23

Applicant: BASF AG

Inventor： BUERUNAA OSUTERUTAAKU ,  KUNUTO BITORAA ,  GUSUTOFUA BOKU

IPC: C09C1/22 ,  C01G49/00 ,  C09C1/00 ,  C09C1/24 ,  C09C1/40