公开(公告)号：ES2038350T5

公开(公告)日：1996-01-01

申请号：ES89103742

申请日：1989-03-03

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR ,  MRONGA NORBERT DR ,  GRAESSLE ULRICH DR

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：DE3808070A1

公开(公告)日：1989-09-21

申请号：DE3808070

申请日：1988-03-11

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR ,  MRONGA NORBERT DR ,  GRAESSLE ULRICH DR

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.