公开(公告)号：JPH10298613A

公开(公告)日：1998-11-10

申请号：JP3588798

申请日：1998-02-18

Applicant: BASF AG

Inventor： LEUTNER BERND DR ,  FRIEDRICH GABRIELE ,  SCHLEGEL REINHOLD

IPC: C01B25/08 ,  B22F1/00 ,  B22F9/04 ,  B22F9/30 ,  C22C1/04 ,  C22C33/02 ,  C22C38/00

Abstract: PROBLEM TO BE SOLVED: To produce phosphorous-contg. iron powder variable in the content of phosphorus in a wide range and extremely low in the content of inevitable components by mixing metallic iron in the form of pulverized carbonyl iron and a phosphorus element, executing heating to a relatively low temp. and pulverizing the obtd. product into powder. SOLUTION: Pulverized carbonyl iron as metallic iron and a phosphorus element are mixed, preferably, at the mass ratio of (99:1) to (70:30), and heating is executed. The pulverized carbonyl iron can be obtd. by subjecting carbonyl iron obtd. by thermally decomposing pentacarbonyliron in vapor phases to pulverization to about 1 to 10 μm average size, the content of C is regulated to, by weight, =300 deg.C, preferably, at about 380 to 550 deg.C in an inert gas atmosphere. The phosphorus element is used preferably in the form of red phosphorus.

公开(公告)号：JPH10298616A

公开(公告)日：1998-11-10

申请号：JP3289798

申请日：1998-02-16

Applicant: BASF AG

Inventor： LEUTNER BERND DR ,  FRIEDRICH GABRIELE ,  SCHLEGEL REINHOLD

IPC: B22F9/16 ,  B22F1/00 ,  B22F9/28 ,  B22F9/30 ,  C22C33/02 ,  C22C38/00

Abstract: PROBLEM TO BE SOLVED: To produce a fine phosphorus-containing iron having a low ratio of a second component composed of spheroidal particles or spherical particle filiform aggregate with the phosphorus content changeable in the wide range by heating and vaporizing liquefied iron pentacalbonyl and reacting with phosphorus compound under existence of ammonia in vapor phase. SOLUTION: The liquefied Fe(CO)5 is heated and vaporized by electric heating, and this vapor is introduced from the top part of a heatable decomposing tube together with NH3 by using 10-90% CO gas as carrier and reacted with PH3 in the vapor phase. The decomposing tube is set to have two kinds of different temp. zones, and the temp. at the bottom part is made higher than the temp. at the top part by e.g. >=20 deg.C. Further, NH3 in the gaseous mixture is about 0.1-10% and quantity of Fe(CO)5 excessively used is more than about ten times the necessary quantity. The reaction temp. is desirable to be >=200 deg.C. By this method, the fine phosphorus-containing iron composed of the sheroidal particles of 1-10 μm average particle diameter or the filiform aggregate of 1-3 μm spherical diameter and containing 0.1-50 wt.% P and

公开(公告)号：JPH10168083A

公开(公告)日：1998-06-23

申请号：JP21779997

申请日：1997-08-12

Applicant: BASF AG

Inventor： FRIEDRICH HOLGER DR ,  LEUTNER BERND DR ,  MRONGA NORBERT DR ,  SCHMID RAIMUND DR

IPC: C07F7/04

Abstract: PROBLEM TO BE SOLVED: To directly obtain the subject compound through the one-pot process by reaction between a specific halosilicon, a carboxylic acid salt or its anhydride and an alcohol without isolation of tetracyloxysilane, as side-reactions are suppressed. SOLUTION: A halosilicon of the formula: SiX4 (X is fluorine, chlorine, bromine, iodine) (for example, tetrachlorosilane) is allowed to react with compounds of the formula: MR R is formula I [Z is an unsubstituted, or a halogen- monosubstituted or polysubstituted 1-20C alkyl, a 2-20C alkenyl, a 2-20C alkynyl, a group of formula: -(CH2 )p A (p is 0-6; A is an unsubstituted or alkyl-substituted 3-20 membered hydrocarbon ring)]; M is a metal in I and II main groups in the periodic table} and a compound of the formula: HR [R is the formula O-Y (Y is the same as Z)] or an anhydride of formula II and a compound of the formula: HR to give the objective acyloxyalkoxysilane represented by the formula III (m, n are each 1-3; m+n is 4) through the one-pot process.

公开(公告)号：JP2000005773A

公开(公告)日：2000-01-11

申请号：JP15888699

申请日：1999-06-07

Applicant: BASF AG

Inventor： LEUTNER BERND DR ,  HANUS FRANK ,  SCHNEIDER HANS-MICHAEL DR ,  WATZENBERGER OTTO ,  WEGMANN UWE

IPC: C02F1/72 ,  C02F1/76

Abstract: PROBLEM TO BE SOLVED: To provide a method capable of decomposing waste water containing hydroxylamine over a broad range of concentration and also decomposing it at a high reaction speed with a low residual concentration. SOLUTION: This method is for decomposing the hydroxylamine in aqueous solution, especially in waste water by treating it with an oxidizer, and as the ozidizer, alkali metallic salt of hypohalogenous acid, alkaline earth metallic salt of hypohalogenous acid or peroxomonosulfuric acid or peroxodisulfuric acid or its salt is used, and also the treatment with the oxidizer is performed at pH of

公开(公告)号：JPH10317023A

公开(公告)日：1998-12-02

申请号：JP11093298

申请日：1998-04-21

Applicant: BASF AG

Inventor： SIMON JOACHIM DR ,  SCHLEGEL REINHOLD ,  LEUTNER BERND DR

IPC: B22F9/16 ,  B22F9/12 ,  B22F9/30 ,  C22B5/20 ,  H01F1/20 ,  H01F1/24

Abstract: PROBLEM TO BE SOLVED: To efficiently produce silicon-contg. iron powder contg. impurities in a smaller amt. at a low cost by using silanes or nohalogen contg. org. silanes exclusive of tolyethylsilane and tetraethoxysilane as the volatile silicon compd. to be used for a raw material. SOLUTION: The silane suitable as the raw material is silanes like monosilanes which are gas and volatile at room temp. Pyrolysis of pentacarbonyl iron and the volatile silicon compd. is preferably executed under the absolute pressure of 1 to 2 bar at 200 to 600 deg.C. If the pyrolysis is executed in the presence of ammonia, the decomposition of the pentacarbonyl iron to iron and carbon monoxide is accelerated. The resulted silicon-contg. iron powder is spherical particles of 0.005 to 10 μm in average diameter which are obtd. in a finely dispersed state. This silicon-contg. iron powder is made into the powder substantially not contg. carbon, oxygen and nitrogen by subjecting the powder to heating reduction in hydrogen gaseous flow.

公开(公告)号：JPH10273792A

公开(公告)日：1998-10-13

申请号：JP33406897

申请日：1997-12-04

Applicant: BASF AG

Inventor： FRIEDRICH HOLGER DR ,  HOPPE KLAUS-DIETER DR ,  LEUTNER BERND DR ,  SCHLAEFER DIETER DR ,  HECKY KURT

IPC: C25B13/08 ,  C25B13/00 ,  C25B15/00

Abstract: PROBLEM TO BE SOLVED: To control the flow resistance of a diaphragm in a desired range with good reliability by treating the diaphragm based on a fibrous material with a fluorine-contg. dispersion during or after the production of the diaphragm. SOLUTION: A diluent, sodium chloride, sodium hydroxide, sterilizer, surfactant, antifoaming agent, etc., are incorporated into a powdered and cleaned fiber to obtain a fibrous aq. slurry. A dispersion contg. a fluorine-contg. component and a soln. contg. the precursor of ZrO2 , as required, are added to the slurry while agitating to produce a recirculating diaphragm. Meanwhile, the diaphragm treatment is conducted during electrolysis, preferably during alkali chloride electrolysis. The amt. of the fluorine-contg. component to be used and incorporated in the dispersion is preferably controlled to 0.1 to 30 wt.% of the fibrous material in the diaphragm, and the fluorine-contg. component used in the diaphragm should be present at 30 to 500 g/m with respect to the area of the diaphragm.

公开(公告)号：EP0778278B1

公开(公告)日：2001-10-31

申请号：EP96118974

申请日：1996-11-27

Applicant: BASF AG

Inventor： FRIEDRICH HOLGER DR ,  LEUTNER BERND DR ,  MRONGA NORBERT DR ,  SCHMID RAIMUND DR

IPC: C01B33/12 ,  C07F7/04 ,  C23C16/40 ,  C23C16/44 ,  H01L21/316

CPC classification number: C23C16/4417 ,  C01B33/126 ,  C07F7/045 ,  C23C16/402

公开(公告)号：DE19650316A1

公开(公告)日：1998-06-10

申请号：DE19650316

申请日：1996-12-04

Applicant: BASF AG

Inventor： FRIEDRICH HOLGER DR ,  HOPPE KLAUS-DIETER DR ,  LEUTNER BERND DR ,  SCHLAEFER DIETER DR ,  HECKY KURT

IPC: C25B13/08 ,  C25B13/00 ,  C25B15/00 ,  C25B13/04

Abstract: Modification of the cross-flow resistance of a diaphragm based on fibrous material comprises treating the diaphragm, during or after manufacture, with a dispersion of a component (I) containing fluorine and optionally a solution containing a zirconium dioxide (ZrO2) precursor. Preferably treatment is carried out during electrolysis. The amount of (I) used is 0.1-30 wt.% w.r.t. the fibrous material of the diaphragm and the amount applied is 30-500 g/m diaphragm surface area.

公开(公告)号：DE19632483A1

公开(公告)日：1998-02-19

申请号：DE19632483

申请日：1996-08-12

Applicant: BASF AG

Inventor： FRIEDRICH HOLGER DR ,  LEUTNER BERND DR ,  MRONGA NORBERT DR ,  SCHMID RAIMUND DR

IPC: C07F7/04

Abstract: Preparation of an acyloxy-organyloxy-silane of formula (R )nSi(R )m (I) comprises reacting a silicon tetrahalide of formula SiX4 (II) with (a) an alkanol, alkenol, alkynol or cyclic hydroxyl compound of formula H-R (III) and (b) either a metal carboxylate of formula MR (IV) or an anhydride of formula Z-C(O)-O-C(O)-Z (V), where R = -O-Y; R = -O-C(=O)-Z; m, n = 1, 2 or 3 and n + m = 4; Y, Z = optionally halogen-substituted 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl or (CH2)p-A; p = 0-6; A = 3-20 membered hydrocarbon ring; X = fluorine, chlorine, bromine or iodine; and M = Group IA or IIA metal.

公开(公告)号：DE4420750A1

公开(公告)日：1994-12-22

申请号：DE4420750

申请日：1994-06-15

Applicant: BASF AG

Inventor： KALCK ULRICH DR ,  LEUTNER BERND DR ,  PFEFFINGER JOACHIM ,  SIMON JOACHIM DR ,  SCHWEINZER JUERGEN DR

IPC: C01C3/18

Abstract: Continous preparation of calcium cyanamide from urea and calcium oxide, calcium hydroxide or calcium carbonate by stepwise reaction at a temperature increased in steps, by a) carrying out the reaction by means of a travelling grate furnace (kiln) at temperatures of from 160 to 800 DEG C or b) reacting urea and the calcium compound at from 130 to 350 DEG C in a reactor having a horizontal axis and containing internal fittings for conveying and comminuting and also for scraping off the reaction mixture from the reactor wall and/or from the central shaft, and further reacting the mixture of calcium cyanurate obtained, which is here formed as a free-flowing powder, in a manner known per se at from 650 to 750 DEG C in a fluidised-bed reactor or in a rotary kiln to give calcium cynamide.