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公开(公告)号：DE4301469A1
公开(公告)日：1994-07-28
申请号：DE4301469
申请日：1993-01-21
Applicant: BASF AG
Inventor： FETZER THOMAS DR , BUECHELE WOLFGANG DR , IRGANG MATTHIAS DR , OTTO BERNHARD DR , WISTUBA HERMANN DR , BUERGER GERT DR
IPC: B01J23/76 , B01J23/00 , B01J23/80 , B01J37/08 , C07B61/00 , C07C29/153 , C07C29/154 , C07C29/156 , C07C31/04 , B01J23/82 , B01J23/78 , B01J23/34
Abstract: Catalysts prepared by combining M-Al2O4 where M is an element of Group Ib, VIIb or VIII of the Periodic Table of the Elements with tin, lead, an element of group IIa or IIb of the Periodic Table of the Elements as oxide or salt or in elemental form and calcining at 300-1300 DEG C. under 0.1-200 bar and the process for preparing them.
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公开(公告)号：DK0751118T3
公开(公告)日：1999-12-27
申请号：DK96110026
申请日：1996-06-21
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , BRUCHMANN BERND DR , MINGES ROLAND DR , KELLER PETER DR , VAN PEE WILLY DR , HEIDER WOLFGANG , POHL SIEGMUND DR , OTTO BERNHARD DR , JACOBS PAUL DR , SEYFERT WILFRIED DR
IPC: C07C263/10 , C07C263/20 , C07C265/12 , C07C265/14
Abstract: Prodn. of mixts. of diphenylmethanedi-isocyanates and polyphenyl-polymethylene-polyisocyanates (i.e. crude MDI) with a low iodine number and a low chlorine content comprises (a) reacting the corresp. mixts. of diamines and polyamines (MDA) with phosgene in presence of inert solvent(s) at elevated temp., (b) removing excess phosgene and solvent and (c) thermal treatment of the prod.. After phosgenation (a), an effective amt. of a mixt. (I) of water and mono- or polyhydric polyoxyalkylene alcohol(s) (II) is added to the reaction mixt. in the presence or absence of phosgene.
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公开(公告)号：AT185554T
公开(公告)日：1999-10-15
申请号：AT96110026
申请日：1996-06-21
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , BRUCHMANN BERND DR , MINGES ROLAND DR , KELLER PETER DR , VAN PEE WILLY DR , HEIDER WOLFGANG , POHL SIEGMUND DR , OTTO BERNHARD DR , JACOBS PAUL DR , SEYFERT WILFRIED DR
IPC: C07C263/10 , C07C263/20 , C07C265/12 , C07C265/14
Abstract: Prodn. of mixts. of diphenylmethanedi-isocyanates and polyphenyl-polymethylene-polyisocyanates (i.e. crude MDI) with a low iodine number and a low chlorine content comprises (a) reacting the corresp. mixts. of diamines and polyamines (MDA) with phosgene in presence of inert solvent(s) at elevated temp., (b) removing excess phosgene and solvent and (c) thermal treatment of the prod.. After phosgenation (a), an effective amt. of a mixt. (I) of water and mono- or polyhydric polyoxyalkylene alcohol(s) (II) is added to the reaction mixt. in the presence or absence of phosgene.
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4.发明公开Verfahren zur Herstellung von Mischungen aus Diphenylmethandiisocyanaten und Polyphenyl-polymethylen-polyisocyanaten mit einer verminderten Iodfarbzahl und einem reduzierten Chlorgehalt 失效一种用于二苯基甲烷二异氰酸酯和多苯基多亚甲基多异氰酸酯具有降低的碘色数和降低的氯含量的混合物的制备过程
公开(公告)号：EP0751118A3
公开(公告)日：1998-05-13
申请号：EP96110026
申请日：1996-06-21
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , BRUCHMANN BERND DR , MINGES ROLAND DR , KELLER PETER DR , VAN PEE WILLY DR , HEIDER WOLFGANG , POHL SIEGMUND DR , OTTO BERNHARD DR , JACOBS PAUL DR , SEYFERT WILFRIED DR
IPC: C07C263/10 , C07C265/12 , C07C265/14
CPC classification number: C07C263/10 , C08G18/7664 , C08G18/8019 , C07C265/14
Abstract: Gegenstand der Erfindung ist ein Verfahren zur Herstellung von Mischungen aus Diphenylmethan-diisocyanaten und Polyphenyl-polymethylen-polyisocyanaten (Roh-MDI) mit einer verminderten Iodfarbzahl und einem verminderten Chlorgehalt durch Umsetzung der entsprechenden Mischungen aus Diphenylmethan-diaminen und Polyphenyl-polymethylen-polyaminen mit Phosgen in Gegenwart mindestens eines inerten organischen Lösungsmittels bei erhöhter Temperatur, wobei man nach beendeter Phosgenierung der Reaktionsmischung in Gegenwart oder Abwesenheit des Phosgens eine Mischung aus Wasser und mindestens einem ein- oder mehrwertigen Polyoxyalkylenalkohol, vorzugsweise mit einer Funktionalität von 2 bis 3, und vorteilhafterweise einer Hydroxylzahl von 20 bis 1800, in einer wirksamen Menge, die zweckmäßigerweise besteht aus mehr als 0,01 bis 0,3 Gew.-% Wasser (i) und 0,5 bis 5 Gew.-% eines Polyoxyalkylenalkohols (ii), jeweils bezogen auf das Roh-MDI-Gewicht, einverleibt, danach das überschüssige Phosgen bzw. die noch vorliegenden Phosgenreste und das inerte organische Lösungsmittel abtrennt, dem Reaktionsprodukt gegebenenfalls bis 5 Gew.-%, bezogen auf das Roh-MDI-Gewicht, mindestens eines Antioxidans auf Phenolbasis und/oder Arylphosphit hinzugefügt und die Reaktionsmischung thermisch behandelt.
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公开(公告)号：DE4232769A1
公开(公告)日：1994-03-31
申请号：DE4232769
申请日：1992-09-30
Applicant: BASF AG
Inventor： BRUCHMANN BERND DR , MINGES ROLAND DR , HEIDER WOLFGANG , OTTO BERNHARD DR , SCHERZER DIETRICH DR , SEYFERT WILFRIED DR , VAN PEE WILLY DR
IPC: C07C265/14 , C08G18/76 , C08G18/78
Abstract: Prodn. of mixts. (I) of diphenylmethane diisocyanates (MDI) and polyphenyl polymethylene polyisocyanates (IA) with reduced I2 colour no. involves reacting corresp. mixts. (II) of diphenylmethane diamines (MDA) and polyphenyl polymethylene polyamines (IIA) with COCl2 in the presence of inert organic solvent(s) (III) at elevated temp., sepn. of excess COCl2 and (III) when phosgenation is complete and thermal treatment of the reaction prod. The novelty is that amines (IVA) and/or urea cpds. (IVB) are incorporated in the reaction mixt. after phosgenation. (IVA) are aromatic amines, pref. MDA and/or (IIA); and (IVB) are aliphatic and/or aromatic cpds., pref. urea derivs. of MDI and/or (IA). (IV) are added in amts. of 0.01-2.5% w.r.t. (I) in the reaction mixt. and at the time when the COCl2 content of the mixt. is 0.01-3%. USE/ADVANTAGE - (I) are useful in the prodn. of compact or foamed polyisocyanate poly-addn. prods., pref. flexible or (semi-)rigid foam contg. urethane and opt. isocyanurate gps. Addn. of (IV) reduces I2 colour no., e.g. to under 60, without the need to add water. The (I) obtd. contain 30-90, pref. 30-70 (wt.)% MDI isomers and have an NCO content of 31 +/- 2, pref. 31 +/- 1% and viscosity of max. 2000, pref. 40-700 mPa.s at 23 deg.C. (I) give light-coloured foams.
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Patent Agency Ranking
公开(公告)号：DE4008074A1
公开(公告)日：1991-09-19
申请号：DE4008074
申请日：1990-03-14
Applicant: BASF AG
Inventor： BRUCHMANN BERND DR , BORSCHEL EVA-MARIE DR , OTTO BERNHARD DR , LANGER WERNER DR , MINGES ROLAND DR , STRAEHLE WOLFGANG DR , PEE WILLY VAN DR
IPC: C07C209/84
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公开(公告)号：DE19705329A1
公开(公告)日：1998-08-13
申请号：DE19705329
申请日：1997-02-12
Applicant: BASF AG
Inventor： RAULS MATTHIAS DR , BAUMANN DIETER , WISTUBA HERMANN DR , OTTO BERNHARD DR
Abstract: The invention relates to a method of producing dicarboxlic acid crystallizates from a solution containing at least one organic dicarboxylic acid, wherein at least one anionic polyelectrolyte with a molar mass of at least 2.000 is added to the solution before or during crystallization.
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公开(公告)号：DE19523851A1
公开(公告)日：1997-01-02
申请号：DE19523851
申请日：1995-06-30
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , BRUCHMANN BERND DR , MINGES ROLAND DR , KELLER PETER DR , PEE WILLY VAN DR , HEIDER WOLFGANG , POHL SIEGMUND DR , OTTO BERNHARD DR , JACOBS PAUL DR , SEYFERT WILFRIED DR
IPC: C07C263/10 , C07C263/20 , C07C265/12 , C07C265/14 , C07C263/18 , C08G18/76
Abstract: Prodn. of mixts. of diphenylmethanedi-isocyanates and polyphenyl-polymethylene-polyisocyanates (i.e. crude MDI) with a low iodine number and a low chlorine content comprises (a) reacting the corresp. mixts. of diamines and polyamines (MDA) with phosgene in presence of inert solvent(s) at elevated temp., (b) removing excess phosgene and solvent and (c) thermal treatment of the prod.. After phosgenation (a), an effective amt. of a mixt. (I) of water and mono- or polyhydric polyoxyalkylene alcohol(s) (II) is added to the reaction mixt. in the presence or absence of phosgene.
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公开(公告)号：DE4300774A1
公开(公告)日：1994-07-21
申请号：DE4300774
申请日：1993-01-14
Applicant: BASF AG
Inventor： BRUCHMANN BERND DR , MINGES ROLAND DR , HEIDER WOLFGANG , OTTO BERNHARD DR , SCHERZER DIETRICH DR , SEYFERT WILFRIED DR , PEE WILLY VAN DR
IPC: C07C263/10 , C08G18/70 , C08G18/76 , C07C265/14
Abstract: In the prodn. of mixts. (crude MDI) (I) of diphenylmethane diisocyanates and polyphenyl-polymethylene polyisocyanates by reacting corresp. mixts. of diphenylmethane diamines and polyphenyl-polymethylene polyamines with COCl2 in the presence of inert organic solvent(s) (II) at elevated temp., the I2 colour no. is reduced by adding phenols (III) after phosgenation and before sepg. excess COCl2 and (II) and heat treatment of the reaction prod.Pref. (III) may be mono- or polyhydric and pref. polycyclic. They are added in amts. of 0.001-10 (wt.%) w.r.t. (I) in the reaction mixt., pref. when the mixt. contains 0.01-3% COCl2.
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公开(公告)号：DE19533715A1
公开(公告)日：1997-03-13
申请号：DE19533715
申请日：1995-09-12
Applicant: BASF AG
Inventor： FETZER THOMAS DR , WAGNER ECKHART DR , SCHUMACHER VOLKER DR , BUERGER GERT DR , ROETH EMIL DIPL ING , RUPPEL WILHELM DR , WISTUBA HERMANN DR , OTTO BERNHARD DR
Abstract: The invention concerns a method of removing nitrogen oxides from a gas flow. The gas flow is guided: (A) through a stage in which the nitrogen oxides, apart from N2O, are absorbed in an absorption agent, or the nitrogen oxides, apart from N2O, are reacted with an absorption agent at a pressure of between 1.5 and 20 bar; and (B) through a stage for reducing the N2O content, preferably using the pressure level prevailing in step (A). The invention further concerns a device for carrying out this method and the use thereof.
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