公开(公告)号：DE3672575D1

公开(公告)日：1990-08-16

申请号：DE3672575

申请日：1986-11-27

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR ,  CZECH ERWIN DR ,  SCHMITT FRANZ-ULRICH DR ,  SCHULZE-HAGENEST DETLEF DR

IPC: B22F9/28 ,  C09D5/23 ,  G03G9/08 ,  G03G9/083 ,  G03G9/09

公开(公告)号：DE3671002D1

公开(公告)日：1990-06-13

申请号：DE3671002

申请日：1986-06-25

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR ,  WIENAND HENNING DR ,  BAUER ROLAND

IPC: C01G49/02 ,  C01G49/08 ,  C09C1/24 ,  H01F1/11

Abstract: Magnetite pigments are prepared from iron(II) salt solutions by a process in which the mean particle size can be brought to a value within the range from 0.06 to 0.5 mu m by means of a residence stage between the precipitation stage and the oxidation stage.

公开(公告)号：DE3643247A1

公开(公告)日：1988-06-30

申请号：DE3643247

申请日：1986-12-18

Applicant: BASF AG

Inventor： WIENAND HENNING DR ,  OSTERTAG WERNER DR ,  SCHWIDETZKY CHRISTOPH DR ,  KNITTEL HELMUT DR

IPC: C08K9/04 ,  C09C1/00 ,  C09C3/00 ,  C09C3/06 ,  C09C3/12 ,  C09D7/12

Abstract: Thermostable bismuth vanadate/molybdate pigments are prepared by precipitating onto a pigment, obtained by calcination, of the formula Bi VO4.Bi2Mo O6 where n is 0.2-2.5, in aqueous suspension at 70 DEG -100 DEG C. within the pH range from 4 to 9.5 a first SiO2-containing layer using an alkali metal silicate solution of a magnesium hexafluorosilicate solution, maintaining the suspension at 70 DEG -100 DEG C. for not less than 1 hour, producing a thick coating on the precoated pigment by adding further alkali metal silicate solution, magnesium hexafluorosilicate solution or a mixture of the two within the pH range from 4 to 9.5, and finally depositing wax on the SiO2-containing layer by means of a waxing emulsion/dispersion, the products showing, compared with the starting pigment, an appreciably improved thermal stability in plastics.

公开(公告)号：DE3402019A1

公开(公告)日：1985-07-25

申请号：DE3402019

申请日：1984-01-21

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR

IPC: C01G49/08 ,  C09C1/24 ,  C09D5/23 ,  B22F9/00 ,  C09D11/00

Abstract: Finely divided magnetite pigments with a narrow particle size spectrum are produced by the reduction of ferric oxide, the ferric oxide being one which has been obtained by the combustion of iron carbonyl, and the reduction of the ferric oxide being carried out under pressure in the presence of a liquid phase consisting of, or containing, a liquid aliphatic alcohol and/or aldehyde, at temperatures above the boiling point of the liquid phase, measured under normal conditions. The magnetite pigment is suitable for the production of magnetic inks for the ink-jet printing process.

公开(公告)号：DE3260275D1

公开(公告)日：1984-07-26

申请号：DE3260275

申请日：1982-08-30

Applicant: BASF AG

Inventor： WIENAND HENNING DR ,  OSTERTAG WERNER DR ,  BITTLER KNUT DR

IPC: C09C1/00

Abstract: Yellow pigments containing bismuth vanadate and having the composition BiVO4.xBi2MoO6.yBi2WO6 where x is from 0.6 to 2.25 and y is from 0 to 0.1, are prepared by a process in which a solution containing a bismuth(III) salt, a vanadate and a molybdate is acidified until the pH is

公开(公告)号：DE3237264A1

公开(公告)日：1984-04-12

申请号：DE3237264

申请日：1982-10-08

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR

IPC: C08K9/00 ,  A61K8/18 ,  A61K8/25 ,  A61K8/29 ,  A61Q1/02 ,  C08K9/02 ,  C08L67/00 ,  C09C1/00 ,  C09C1/40 ,  C09C3/00 ,  C09C3/06 ,  C09C3/08 ,  C09D7/00 ,  C09D7/12 ,  A61K7/021 ,  B05D5/06 ,  C03C17/00 ,  C09D5/36

Abstract: Effect pigments are prepared by a process in which a pigment substrate comprising flaky particles, of which from 10 to 90% by weight have a longest dimension of from 60 to 400 mu m and the remainder have a longest dimension of from 3 to 30 mu m, are treated, in a fluidized bed, with one or more metal chlorides and steam in the gas phase, at elevated temperatures. During this procedure, the particles are coated with metal oxide. After coating, the fraction having a particle size of from 3 to 30 mu m is separated off as the effect pigment. The coatings obtained adhere very firmly to the flaky particles. The pigments are used for coloring finishes, plastics, cosmetic products and glasses.

公开(公告)号：DE2255028A1

公开(公告)日：1974-06-12

申请号：DE2255028

申请日：1972-11-10

Applicant: BASF AG

Inventor： HARTMANN JOB WERNER DR ,  OSTERTAG WERNER DR ,  SAND RUDOLF ,  SCHAEFER DIETER DR ,  HARTMANN HANS JOERG DR

IPC: C08L63/00 ,  G11B5/708 ,  G11B5/73 ,  G11B5/733 ,  G11B5/70

Abstract: The invention relates to magnetic discs in which first a non-magnetic intermediate layer and then the magnetic coating are applied by conventional methods to an aluminum disc. The intermediate layer applied to the non-magnetic metallic carrier disc is a hard non-magnetic coating which can be polished and which consists of a dispersion of a pulverulent mixture of finely divided inorganic non-magnetic pigments having a Mohs' hardness of at least 7 in a binder which can be cured and which provides firm cohesion of the pigment particles and good adhesion thereof to the non-magnetic base disc, the pigment mixture containing at least 3 percent by weight of corundum powder having a particle size of from about 1 to 20 mu u. Magnetic discs with very thin magnetic coatings which possess good magnetic and mechanical properties and whose thickness varies only minimally are thus produced in a simple manner.

公开(公告)号：ES2155149T3

公开(公告)日：2001-05-01

申请号：ES96104563

申请日：1996-03-22

Applicant: BASF AG

Inventor： SCHMIDT HELMUT ,  OSTERTAG WERNER DR ,  BIDLINGMAIER HERMANN ,  MRONGA NORBERT DR ,  GONZALEZ GOMEZ JUAN ANTONIO DR ,  KALIBA CLAUS DR

IPC: C09C1/30 ,  A61K8/11 ,  A61K8/25 ,  A61Q1/02 ,  C03C1/10 ,  C03C4/02 ,  C04B33/14 ,  C08K9/02 ,  C09C1/00 ,  C09C1/28 ,  C09C1/36 ,  C09C3/08 ,  C09D5/36 ,  C09D7/12 ,  C09D11/00 ,  A61K7/00

Abstract: (A) Prepn. of blue-shade gloss pigments is obtd. by treatment of silicatic flakes which are coated with titanium dioxide (the titanium dioxide coating having a geometric layer thickness of 10-60 nm) with a reducing gas mixt. (which contains a vaporised organic cpd. and ammonia) at 800-900 degrees C. (B) Blue-shade gloss pigment is based on silicatic flakes which comprise a reduced titanium dioxide and has a geometric layer thickness of 10-60 nm and a CIELAB colour value -2 ≤ a* ≤ b* ≤ -20 (measurement angle 20 degrees ,'standard light type'D65).

公开(公告)号：DE19532419A1

公开(公告)日：1997-03-06

申请号：DE19532419

申请日：1995-09-01

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR ,  ZIRNSTEIN MICHAEL DR ,  GREIF NORBERT DR ,  BECK ERICH DR ,  MAYER FRANK DR ,  POTH ULRICH DR ,  SIEMENSMEYER KARL DR ,  SIERAKOWSKI CLAUDIA DR ,  LEYRER REINHOLD DR ,  JAHNS EKKEHARD DR ,  ETZBACH KARL-HEINZ DR ,  SCHUHMACHER PETER DR

IPC: C09K19/38 ,  C08F20/28 ,  C09B67/00 ,  C09D4/00 ,  C09D4/06 ,  C09D5/29 ,  C09D5/36 ,  C09D11/02 ,  C09D11/10 ,  C09D11/16 ,  C09K19/00 ,  C09K19/54 ,  C09K19/58 ,  B05D7/24 ,  B41M1/00 ,  C09K19/06 ,  C09D11/00 ,  C09D201/02 ,  C09D5/02

Abstract: A coating or printing process comprises coating a substrate with a material (I) contg. liq. crystalline (LC) monomers with at least two polymerisable gps. for coating and at least one for printing, and then polymerising the material. Material (I) contains either (a1) a chiral LC monomer and (b) a polymer binder and/or monomeric precursors thereof or, in the case of dispersion coatings and printing inks, a dispersant (d), or (a2) an achiral LC monomer, (b) as above and (c) a non-LC chiral cpd. Also claimed are (i) materials coated by this process; (ii) mixts. suitable for use as reaction lacquers and objects coated with such mixts., mixts. as above for use as printing pastes, and mixts. as above for use as emulsion pain; and (iii) the prodn. of pigments contg. polymerisable LC cpds. or mixts. as above by printing techniques.

公开(公告)号：DE19511697A1

公开(公告)日：1996-10-02

申请号：DE19511697

申请日：1995-03-30

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR ,  BIDLINGMAIER HERMANN ,  MRONGA NORBERT DR ,  GONZALEZ GOMEZ JUAN ANTONIO DR ,  KALIBA CLAUS DR ,  SCHMID RAIMUND DR ,  ELLINGHOVEN RAYMOND ,  SCHMIDT HELMUT

IPC: C09C1/30 ,  A61K8/11 ,  A61K8/25 ,  A61Q1/02 ,  C03C1/10 ,  C03C4/02 ,  C04B33/14 ,  C08K9/02 ,  C09C1/00 ,  C09C1/28 ,  C09C1/36 ,  C09C3/08 ,  C09D5/36 ,  C09D7/12 ,  C09D11/00 ,  C09D17/00 ,  C09D11/02 ,  C09D11/16 ,  A61K7/021

Abstract: (A) Prepn. of blue-shade gloss pigments is obtd. by treatment of silicatic flakes which are coated with titanium dioxide (the titanium dioxide coating having a geometric layer thickness of 10-60 nm) with a reducing gas mixt. (which contains a vaporised organic cpd. and ammonia) at 800-900 degrees C. (B) Blue-shade gloss pigment is based on silicatic flakes which comprise a reduced titanium dioxide and has a geometric layer thickness of 10-60 nm and a CIELAB colour value -2 ≤ a* ≤ b* ≤ -20 (measurement angle 20 degrees ,'standard light type'D65).