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公开(公告)号：DE4241753A1
公开(公告)日：1994-06-16
申请号：DE4241753
申请日：1992-12-11
Applicant: BASF AG
Inventor： OSTERTAG WERNER DR , SCHMIDT HELMUT
Abstract: PCT No. PCT/EP93/03351 Sec. 371 Date Apr. 21, 1995 Sec. 102(e) Date Apr. 21, 1995 PCT Filed Nov. 30, 1993 PCT Pub. No. WO94/13489 PCT Pub. Date Jun. 23, 1994Interference pigments based on multiply coated plateletlike silicatic substrates comprising A) a first layer comprising a colorless or selectively absorbing metal oxide with a high refractive index, B) a second, non-selectively absorbing, semitransparent layer consisting essentially of carbon, a metal or a metal oxide, and optionally C) a third layer comprising a colorless or selectively absorbing metal oxide in combination with scattering color pigments which are complementary in color to the reflection color of the interference pigments are useful for preparing valuable documents that are forgeryproof.
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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.
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公开(公告)号：DE3727383A1
公开(公告)日：1989-03-02
申请号：DE3727383
申请日：1987-08-17
Applicant: BASF AG
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公开(公告)号：DE3542834A1
公开(公告)日：1987-06-11
申请号：DE3542834
申请日：1985-12-04
Applicant: BASF AG
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公开(公告)号：DE3262210D1
公开(公告)日：1985-03-21
申请号：DE3262210
申请日：1982-06-16
Applicant: BASF AG
Inventor： OSTERTAG WERNER DR , BITTLER KNUT DR , BOCK GUSTAV DR
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Patent Agency Ranking
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
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.
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公开(公告)号：DE3160231D1
公开(公告)日：1983-06-16
申请号：DE3160231
申请日：1981-01-17
Applicant: BASF AG
Inventor： OSTERTAG WERNER DR , BITTLER KNUT DR , BOCK GUSTAV DR
Abstract: To prepare a colored pigment which has a metallic luster and consists of a metallic core whose surface is at least partially covered with an iron oxide, iron pentacarbonyl is oxidized with oxygen in a fluidized bed of the metallic cores at above 100 DEG C. The amount of iron pentacarbonyl vapor introduced into the fluidized bed must not exceed 5% by volume, based on the total gases introduced into the fluidized bed over the same period of time.
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8.发明专利
公开(公告)号：DE2517713A1
公开(公告)日：1976-11-04
申请号：DE2517713
申请日：1975-04-22
Applicant: BASF AG
Inventor： OSTERTAG WERNER DR , WUNSCH GERT DR , EBENHOECH FRANZ DR , VOELKL ERFRIED DR , BOCK GUSTAV DR
Abstract: Prodn. of a readily dispersing fine-grain, brown pigment having the formula: CrxFe2-xO3 (in which 0.1=x=1) is improved in that an aq. soln. of CrO3 (pref. concn. 45-63 wt.%) and/or gaseous CrO2Cl2 is introduced in the form of a spray into a reaction zone in presence of water vapour, gaseous Fe(CO)5 and O2; the reaction is carried out at a temp. >700 degrees C (pref. 700-1000 degrees C); and the resulting solid reaction product remains in the reaction zone for at least 1 sec. (pref. up to 10 sec.) before the withdrawal. These pigments are temp. resistant and light fast. Their prodn. is more convenient than the usual wet coprecipitation of the components, with subsequent sepn. and calcination. These are no- by-products, and high purity pigments are obtd. The colour can be easily controlled (increasing Cr content and, to a lesser extent, prolonged residence time give darker brown colouration.).
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公开(公告)号：DE2429177A1
公开(公告)日：1976-01-22
申请号：DE2429177
申请日：1974-06-18
Applicant: BASF AG
Inventor： STECK WERNER DR , WUNSCH GERD DR , DEIGNER PAUL DR , OSTERTAG WERNER DR , UHL KARL DR ING
Abstract: In the prodn. of thin cohesive magnetic films based on Fe oxides and opt. Co oxides or their redn. prods. on substrates by gas plating, with thermal decompsn., with complex cpds. (I) of Fe and opt. Co and/or Ni on the hot substrate surface in the presence of O2 and redn. of the oxide film with H2, a crystalline metal oxide film is deposited on the surface at 150-300 degrees C in the presence of an inert gas or inert gas-H2 stream contg. 0.05-1.3 vol.% O2 or 0.25-6.5% air and the oxide film is reduced to a magnetic oxide or metallic film with H2 or H2 mixts. at 250-400 degrees C. Binder-free magnetic films with good adhesion and reproducible magnetic properties can be produced using only 2 stages and under conditions suitable for the Al discs normally used as substrate, for which thermal treatment above 300 degrees C and esp. above 380 degrees C is excluded.
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公开(公告)号：AT197060T
公开(公告)日：2000-11-15
申请号：AT95110520
申请日：1995-07-06
Applicant: BASF AG
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