公开(公告)号：DE4223384A1

公开(公告)日：1994-01-20

申请号：DE4223384

申请日：1992-07-16

Applicant: BASF AG

Inventor： SCHLEGEL REINHOLD ,  MRONGA NORBERT DR ,  RIEGER REINHOLD

IPC: C03C4/02 ,  C04B33/14 ,  C08K9/02 ,  C09C1/00 ,  C09C1/62 ,  C09C1/64 ,  C09C3/06 ,  C09D7/12 ,  C09D11/00 ,  C09D17/00 ,  C09D5/26 ,  C09D11/02 ,  C04B14/36 ,  C03C8/14

Abstract: Lustre pigments comprising aluminium platelets (substrate) that are coated with a metal oxide and have a total carbon content

公开(公告)号：DE4209242A1

公开(公告)日：1993-09-23

申请号：DE4209242

申请日：1992-03-21

Applicant: BASF AG

Inventor： SCHMID RAIMUND DR ,  MRONGA NORBERT DR ,  OSTERTAG WERNER DR ,  SCHMIDT HELMUT

IPC: C09C1/40 ,  A61K8/11 ,  A61K8/26 ,  A61Q1/02 ,  C04B33/14 ,  C08K3/00 ,  C09C1/00 ,  C09C1/62 ,  C09C1/64 ,  C09D5/36 ,  C09D7/12 ,  C09D11/00

Abstract: Mixtures suitable as gloss pigments comprising …… a) aluminium particles coated with iron oxide and … b) mica particles coated with iron oxide, which can already be coated in a first layer with colourless, highly refracting metal oxides, … as essential components,… process for the preparation of these mixtures and their use as dry pigments in printing and coating processes, and generally for the colouring of coatings, printing inks, plastics, decorative cosmetic preparations and ceramic products.

公开(公告)号：DE4141069A1

公开(公告)日：1993-06-17

申请号：DE4141069

申请日：1991-12-13

Applicant: BASF AG

Inventor： SCHMID RAIMUND DR ,  MRONGA NORBERT DR ,  OCHMANN HARALD DR ,  ADEL JOERG DR

IPC: A61K8/30 ,  A61K8/19 ,  A61K8/25 ,  A61K8/29 ,  A61Q1/02 ,  C08K9/02 ,  C08L9/02 ,  C09C1/00 ,  C09C1/28 ,  C09C3/06

Abstract: In order to produce glossy pigments based on platelike silicate substrates provided with several coatings, the substrates already coated with a first layer of colourless or selectively absorbing metal oxide are (a) at first coated with a second, non-selectively absorbing layer essentially composed of carbon, metal and/or metal oxide, and then (b) are coated, if required, with a third layer of colourless or selectively absorbing metal oxide. The carbon layer (step a) is applied by thermal decomposition of oxygenated hydrocarbons which contain at least one oxygen atom for each pair of carbon atoms. The metal layer (step a) is applied by gas phase decomposition of volatile compounds of said metals in an inert gas. The metal oxide layer (steps a and/or b) is applied by gas phase decomposition of volatile compounds of said metals in the presence of oxygen, steam or mixtures thereof. In case (a), said layers are applied on substrates already coated with a first metal oxide layer and in case (b), said layers are applied on substrates coated with a second, non-selectively absorbing layer (a). Also disclosed are special pigments, the production and use of such glossy pigments for colouring lacquers, printing inks, plastics, decorative cosmetic compositions, glass and ceramic products.

公开(公告)号：DE4140900A1

公开(公告)日：1993-06-17

申请号：DE4140900

申请日：1991-12-12

Applicant: BASF AG

Inventor： ADEL JOERG DR ,  MRONGA NORBERT DR ,  CZECH ERWIN DR

IPC: G03G9/10 ,  C23C16/40 ,  G03G9/107 ,  G03G9/113 ,  H01F1/24

Abstract: Described are particles (I) suitable for use as carrier particles in electrophotographic processes and made up of: a) a magnetic core and b) an envelope consisting of aluminium oxide, chromium oxide, molybdenum oxide, tungsten oxide, silicon oxide, tin oxide or zirconium oxide or a mixture of these oxides. Also described are particles (II) made up of: a) a magnetic core and b) an envelope of titanium oxide and produced by decomposing titanium tetraalcoholates in the gas phase by means of water and/or oxygen in the presence of the moving cores. The invention also concerns the manufacture of the particles and their use in two-component developers for electrophotographic processes.