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公开(公告)号:DE2544219A1
公开(公告)日:1977-04-21
申请号:DE2544219
申请日:1975-10-03
Applicant: BASF AG
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公开(公告)号:DE3021580A1
公开(公告)日:1981-12-24
申请号:DE3021580
申请日:1980-06-07
Applicant: BASF AG
Inventor: MAROSI LASZLO DIPL CHEM DR , SCHLIMPER HANS-ULRICH DIPL CHE , SCHWARZMANN MATTHIAS DIPL CHEM , STABENOW JOACHIM DIPL PHYS DR
Abstract: A process for the preparation of zeolites of the ZSM-5 structural type from a mixture of SiO2 and Al(OH)3 by hydrothermal crystallization in an aqueous amine solution, in the absence of alkali, at from 100 DEG to 200 DEG C., wherein the crystallization is carried out in the presence of a triamine, tetraamine and/or higher amine and the reaction mixture is formulated to have an SiO2/Al2O3 molar ratio defined by an equation which involves the chain length and number of amine groups of the amine employed, as well as to have certain molar ratios of H2O/amine and amine/Al2O3, and the use of these zeolites as catalysts for the conversion of alcohols and/or dialkyl ethers to olefins and/or aromatics.
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公开(公告)号:DE2907108A1
公开(公告)日:1980-09-04
申请号:DE2907108
申请日:1979-02-23
Applicant: BASF AG
Inventor: LEUTNER BERND DIPL CHEM DR , SCHLIMPER HANS-ULRICH DIPL CHE , ROTH DIETER DIPL ING DR , KREITNER LUDWIG DIPL ING DR , SPAHN HEINRICH DIPL ING DR
Abstract: Storage-stable, pourable and pumpable silicate suspensions are prepared by wet milling of aluminosilicates, after the preparation of the latter, without intermediate drying.
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公开(公告)号:DE3209223A1
公开(公告)日:1983-09-15
申请号:DE3209223
申请日:1982-03-13
Applicant: BASF AG
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公开(公告)号:DE2544218A1
公开(公告)日:1977-04-21
申请号:DE2544218
申请日:1975-10-03
Applicant: BASF AG
Inventor: LEUTNER BERND DIPL CHEM DR , SCHLIMPER HANS-ULRICH DIPL CHE , WURMB ROLF DIPL CHEM DR , TEYSOHN RAINER DIPL CHEM DR
Abstract: Fillers contg. ZnO, made by simultaneous addn. of a Zn salt in aq. soln. and a base to an aq. suspension contg. 30 wt. % max. inorganic carrier, to maintain pH 10-12. The carrier is pref. silica, a silicate and/or carbonate; Max. rate of addn. of Zn salt is 0.003 mol/min. for each g. carrier per 1. suspension. Pref. after addn. of 90% of the Zn salt required, the pH is reduced to 9-10. Temp. of the suspension is pref. 30-80 degrees (45-55 degrees)C. Synergistic action in combination with other flame retardants, e.g. halogenated cpds., is increased. Lower amounts can be used and adverse effect on mechanical properties of the polyamide reduced.
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公开(公告)号:DE3145712A1
公开(公告)日:1983-05-26
申请号:DE3145712
申请日:1981-11-19
Applicant: BASF AG
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公开(公告)号:DE2824443A1
公开(公告)日:1979-12-13
申请号:DE2824443
申请日:1978-06-03
Applicant: BASF AG
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公开(公告)号:DE2512503A1
公开(公告)日:1976-10-07
申请号:DE2512503
申请日:1975-03-21
Applicant: BASF AG
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公开(公告)号:DE3041324A1
公开(公告)日:1982-06-16
申请号:DE3041324
申请日:1980-11-03
Applicant: BASF AG
Inventor: BLANCK KLAUS DIPL CHEM DR , DETHLEFSEN WINFRIED DIPL CHEM , JUNGBAUER ANTON DIPL CHEM DR , LEUTNER BERND DIPL CHEM DR , SCHIER ERNST-JUERGEN DIPL CHEM , SCHLIMPER HANS-ULRICH DIPL CHE , SCHNEEHAGE HANS DIPL CHEM DR
IPC: C07D251/60 , B01D53/86 , B01J23/00 , B01J23/72 , B01J23/745 , C01C1/12 , C07B61/00 , B01D53/36
Abstract: The reaction off-gas from the synthesis of melamine consists, after separating off the melamine, mainly of ammonia and carbon dioxide, with traces of hydrogen cyanide, isocyanic acid, urea and residual melamine. To remove these trace components, the off-gas is passed over a catalyst, containing copper oxide and/or iron oxide, in the presence of steam at from 100 DEG to 500 DEG C.
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公开(公告)号:DE2602416A1
公开(公告)日:1977-07-28
申请号:DE2602416
申请日:1976-01-23
Applicant: BASF AG
Inventor: STABENOW JOACHIM DIPL PHYS DR , MAROSI LASZLO DIPL CHEM DR , SCHWARZMANN MATTHIAS , SIEBERT GERHARD DIPL CHEM DR , SCHLIMPER HANS-ULRICH DIPL CHE
Abstract: Zeolite mouldings contg. basic Al chloride binders are produced by mixing zeolite powder with binder, kneading moulding mixt. opt. with addn. of water, and calcining at =500 degrees C. Zeolite powder used is capable of flowing and contains 40-70 wt.% water. Basic Al chloride is prepd. by treating aq. solns. contg. Al and Cl ions with solns. of amines having mol.wt. 250-500 in a water-immiscible organic solvent. The aq. and organic phase are then sepd. from one another. The basic Al chloride is recovered from sepd. aq phase by a standard method, provided that the aq. soln. contains max. 25g/l Al and the organic phase contains max. 0.35 mol/l amine. Amorphous basic Al chloride used in an excellent binder for zeolite moulding prodn. Mouldings obtd. have good absorption and catalytic properties.
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