公开(公告)号：EP0758670A3

公开(公告)日：1998-06-03

申请号：EP96112493

申请日：1996-08-02

Applicant: BASF AG

Inventor： OCHMANN HARALD DR ,  REISACHER HANSULRICH DR ,  KNITTEL HELMUT ,  MRONGA NORBERT DR ,  ETZRODT GUENTER DR ,  WIENAND HENNING DR

IPC: C01G49/00 ,  C08K3/18 ,  C08K3/28 ,  C08K3/32 ,  C09C1/00 ,  C09C1/02 ,  C09C1/04 ,  C09C1/22 ,  C09C1/28 ,  C09D7/12 ,  C09D11/02

CPC classification number: C09D11/037 ,  C01P2004/84 ,  C01P2006/60 ,  C08K3/013 ,  C08K3/32 ,  C09C1/0006 ,  C09C1/22 ,  C09D7/62

Abstract: Bismutvanadatpigmente I
Bi
x Fe
y E
v V
(1-w) P
w O
z
mit folgender Bedeutung der Variablen:

E

Calcium, Zink, Cer, Praseodym und/oder Silicium;

x

0,8 bis 1,2;

y

> 0 bis 0,1, wenn v > 0 ist, und
≥ 0,035 bis 0,1, wenn v = 0 ist;

v

≥ 0 bis 0,2;

w

> 0 bis 0,1;

z

Zahl der Sauerstoffatome zur Erfüllung der Valenzerfordernisse der Kationen.

sowie Herstellung und Verwendung dieser Pigmente zum Einfärben von Lacken, Druckfarben und Kunststoffen.

公开(公告)号：DE3770430D1

公开(公告)日：1991-07-04

申请号：DE3770430

申请日：1987-12-09

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：DE3523317A1

公开(公告)日：1987-01-02

申请号：DE3523317

申请日：1985-06-29

Applicant: BASF AG

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

IPC: C01G49/02 ,  C01G49/08 ,  C09C1/24 ,  H01F1/11 ,  G03G9/14

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：DE4310864A1

公开(公告)日：1994-10-06

申请号：DE4310864

申请日：1993-04-02

Applicant: BASF AG

Inventor： KLINGELHOEFER PAUL DR ,  SCHWIDETZKY CHRISTOPH DR ,  WIENAND HENNING DR ,  MRONGA NORBERT DR ,  SCHWAB EKKEHARD DR ,  NEBEL MICHAEL

IPC: C01G49/02 ,  C01G49/06 ,  C08K3/22 ,  C08K9/10 ,  C09C1/22 ,  C09C1/24 ,  C09D17/00

Abstract: Preparation of transparent yellow iron oxide pigments by precipitation of iron(II) hydroxide by addition of an inorganic base to an iron(II) salt solution and subsequent oxidation to FeOOH, in which a) an aqueous iron(II) salt solution having a molarity of at least 0.5 is first admixed at from 25 to 45@C in the presence of dissolved phosphates and, if desired, zinc salts with sufficient base for from 50 to 70% of the iron(II) ions used to be precipitated as hydroxide, then oxidising gas is passed through the mixture obtained until the pH has dropped to a value

公开(公告)号：DE4200925A1

公开(公告)日：1993-07-22

申请号：DE4200925

申请日：1992-01-16

Applicant: BASF AG

Inventor： LIEDEK EGON DR ,  KNITTEL HELMUT DR ,  REISACHER HANS-ULRICH DR ,  MRONGA NORBERT DR ,  OCHMANN HARALD DR ,  WIENAND HENNING DR

IPC: C01B25/45 ,  C01G31/00 ,  C09C1/00

Abstract: Essentially monoclinic, according to X-ray crystallography, bismuth vanadate having the formula Bi[(V1-xPx)O4] in which x is from 0 to 0.1, characterised by a chroma of >/=85, a lightness of >/=80, a hue angle of from 89 to 95 and a photochromaticity having a DELTA E value of

公开(公告)号：DE3926870A1

公开(公告)日：1991-02-21

申请号：DE3926870

申请日：1989-08-16

Applicant: BASF AG

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

IPC: C09C1/00

Abstract: Bi vanadate pigments or pigments contg. Bi vanadate are coated with hardly soluble inorganic Fe cpds. (I). Pref. (I) are used in amts. of 0.001-2.0, pref. 0.05-0.5 wt.% w.r.t. the pigment. The pigments are produced by sepg. them from a suspension in an aq. Fe salt soln. and drying. The Fe salt is Fe2(SO4)3, Fe(NO3)3 or FeCl3. USE/ADVANTAGE - For pigmenting paints, printing inks and plastics. The (I) coating greatly reduced the photochromic effect. In an example, a suspension of 80 g pigment with the compsn. BiVO4.0.75 Bi2MoO6 and 120 g water was ball milled for 60 min. at 1200 rpm (A) without additive or with addn. of (B) 11.4 g Fe(NO3)3.9H2O or 6.8 g Fe2(SO4)3 in dissolved form. The suspension was filtered, washed and dried, giving a pigment contg. (A) 0.003, (B) 0.05, (C) 0.02 wt.% Fe. Paint contg. 20 g pigment in 80 g alkyl-melamine resin was sprayed onto sheet metal and half the sheet was exposed to a 1000 W lamp, 50 cm away, for 1 h. The difference in colour between the exposed and unexposed areas was (A) 2.2, (B) 1.1, (C) 0.7 immediately after exposure and (A) 1.0, (B) 0.2, (C) 0.1, 24 h after exposure.

公开(公告)号：DE59406301D1

公开(公告)日：1998-07-30

申请号：DE59406301

申请日：1994-03-28

Applicant: BASF AG

Inventor： CLOSS FRIEDRICH DR ,  ALBERT BERNHARD DR ,  WIENAND HENNING DR

IPC: C09B23/00 ,  C09B23/01 ,  C09B23/08 ,  C09B63/00 ,  C09B69/06 ,  C09D11/00 ,  C09D11/02 ,  D06P1/90

公开(公告)号：ES2094580T3

公开(公告)日：1997-01-16

申请号：ES94104663

申请日：1994-03-24

Applicant: BASF AG

Inventor： KLINGELHOEFER PAUL DR ,  SCHWIDETZKY CHRISTOPH DR ,  WIENAND HENNING DR ,  MRONGA NORBERT DR ,  SCHWAB EKKEHARD DR ,  NEBEL MICHAEL

IPC: C01G49/02 ,  C01G49/06 ,  C08K3/22 ,  C08K9/10 ,  C09C1/22 ,  C09C1/24

Abstract: Preparation of transparent yellow iron oxide pigments by precipitation of iron(II) hydroxide by addition of an inorganic base to an iron(II) salt solution and subsequent oxidation to FeOOH, in which a) an aqueous iron(II) salt solution having a molarity of at least 0.5 is first admixed at from 25 to 45@C in the presence of dissolved phosphates and, if desired, zinc salts with sufficient base for from 50 to 70% of the iron(II) ions used to be precipitated as hydroxide, then oxidising gas is passed through the mixture obtained until the pH has dropped to a value

公开(公告)号：DE3310270A1

公开(公告)日：1984-09-27

申请号：DE3310270

申请日：1983-03-22

Applicant: BASF AG

Inventor： OSTERTAG WERNER DR ,  WIENAND HENNING DR ,  LACH DIETRICH DR ,  HAHN ERWIN DR

IPC: C01G37/00 ,  C01G37/08 ,  C14C3/04 ,  C14C3/06 ,  C01F7/76

Abstract: The invention relates to basic chromium aluminum sulfates which are soluble in cold water and are of the general formula CrxAl2-x(OH)2y. (SO4)3-y.n H2O where x is from 0.1 to 1.9, y is from 0.01 to 2 and n is from 4 to 24, and a process for the preparation thereof. The process comprises reacting chromium (III)-containing waste sulfuric acid having a water content of 20-50% by weight with aluminum oxide and/or aluminum oxide hydroxide and/or aluminum hydroxide at a temperature of 100 DEG to 200 DEG C. The molten product is converted to droplet form and allowed to solidify in free fall.

公开(公告)号：DE19529837A1

公开(公告)日：1997-02-13

申请号：DE19529837

申请日：1995-08-12

Applicant: BASF AG

Inventor： OCHMANN HARALD ,  REISACHER HANSULRICH ,  KNITTEL HELMUT ,  MRONGA NORBERT ,  ETZRODT GUENTER ,  WIENAND HENNING DR

IPC: C01G49/00 ,  C08K3/18 ,  C08K3/28 ,  C08K3/32 ,  C09C1/00 ,  C09C1/02 ,  C09C1/04 ,  C09C1/22 ,  C09C1/28 ,  C09D7/12 ,  C09D11/02 ,  C01B25/37 ,  C09D17/00 ,  C08J3/20

Abstract: Bi vanadate pigments of the formula BixFeyEvV(1-w)PwOz (I) are new; in which E = Ca, Zn, Ce, Pr and/or Si; x = 0.8-1.2; y > 0 to 0.1 if v > 0 and y ≥ 0.035 to 0.1 if v = 0; v ≥ 0 to 0.2; w > 0 to 0.1; z = the no. of O atoms to satisfy the valencies of the cations.