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公开(公告)号：DE3211901A1
公开(公告)日：1983-10-13
申请号：DE3211901
申请日：1982-03-31
Applicant: BASF AG
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公开(公告)号：DE2942503A1
公开(公告)日：1981-05-07
申请号：DE2942503
申请日：1979-10-20
Applicant: BASF AG
IPC: C07C265/14 , C07C67/00 , C07C241/00 , C07C263/04 , C07C265/12 , C07C271/06 , C07C119/048 , C07C118/00
Abstract: This invention pertains to a process for the preparation of an aromatic di- and/or polyisocyanate comprising the steps of A. preparing an aromatic di- and/or polyurethane by 1. reacting a primary aromatic di- and/or polyamine with an O-alkyl carbamate at temperatures greater than 100 DEG C.; 2. separating the ammonia and other by-products from the aromatic di- and/or polyurethane; B. heating and the aromatic di- and/or polyurethane at temperatures of from 175 DEG C. to 600 DEG C.; and C. isolating the di- and/or polyisocyanate resulting from step B.
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公开(公告)号：DE2917493A1
公开(公告)日：1980-11-13
申请号：DE2917493
申请日：1979-04-30
Applicant: BASF AG
IPC: C07C269/00 , C07B61/00 , C07C67/00 , C07C239/00 , C07C269/04 , C07C271/06 , C07C271/20 , C07D239/04 , C07D239/10 , C07D295/12 , C07D295/13 , C08G18/70 , C07C125/06 , C08G71/04
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公开(公告)号：DE2910132A1
公开(公告)日：1980-09-25
申请号：DE2910132
申请日：1979-03-15
Applicant: BASF AG
IPC: B01J23/38 , C07C271/06 , C07C125/06
Abstract: Prepn. of aromatic urethanes (I) by catalytic reaction of an aromatic amine with a hydroxyl cpd., CO and an oxidising agent, either oxygen or a nitro cpd., is carried out at >=100 degrees C and >=50 bar in the presence of either (a) a noble metal and/or its oxide, sulphate, nitrate, halide and/or acetate as catalyst; or (b) catalytic amts. of Se and/or S contg. catalysts with additional basic cpds. as auxiliary catalysts. (I) are starting materials in prepn. of dyes, plant protecting agents, pharmaceuticals and polyurethanes. (I) can be used in prepn. of corresp. isocyanates and ureas (intermediates for above prods.). Process gives (I) in better yields, space-time yields and purity than previous processes which gave yields of e.g. 30%.
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公开(公告)号：DE2906604A1
公开(公告)日：1980-09-04
申请号：DE2906604
申请日：1979-02-21
Applicant: BASF AG
Inventor： OPPENLAEENDER KNUT DIPL CHEM D , MERGER FRANZ DIPL CHEM DR , STRICKLER RAINER DIPL CHEM DR , HOVEMANN FRIEDRICH DIPL CHEM D , SCHMIDT HELMUT ING GRAD , STARKE KLAUS DIPL ING
Abstract: The use of polyethers of formula (I) and/or acetals of formula (II) as diesel fuels, opt. in combination with =45 vol. % ethanol and/or methanol, =30 vol. % water and/or =85 vol. % mineral diesel oil, is claimed. (where A is ethylene or 1,2-propylene; R1 is 1-8C alkyl; R2 is H or 1-4C alkyl; n = 1-5; R3 is H or 1-12C alkyl; R4 is Me or et; m = 0-5). (I) and (II) have high cetane nos. (e.g. 18-80), so that fuels with a relatively high alcohol and water content can be produced. The fuels produce very little pollutant emission and have better low-temp. stability than conventional diesel oils.
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Patent Agency Ranking
公开(公告)号：DE2852863A1
公开(公告)日：1980-06-19
申请号：DE2852863
申请日：1978-12-07
Applicant: BASF AG
Inventor： HANSEN GUENTER DIPL CHEM DR , MERGER FRANZ DIPL CHEM DR , NESTLER GERHARD DIPL CHEM DR , ZEIDLER GEORG
IPC: C09B29/15 , C09B31/02 , C09B31/068 , C09B67/22 , C10L1/00 , C10L1/22 , C10M171/00 , C09B29/10 , C09B31/06 , C09G1/08
Abstract: A mixture, soluble in organic solvents, of compounds of the formula where D is a radical of the formula n is 0, 1, 2 or 3 and R1 and R2 independently of one another are hydrogen, C1-C4-alkyl, methoxy or ethoxy; with the proviso that the mixture contains compounds with n=0, 1 and 2 and, optionally, 3; is disclosed as being exceptionally suitable for dyeing petroleum products, waxes and greases.
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公开(公告)号：DE2615887A1
公开(公告)日：1977-10-20
申请号：DE2615887
申请日：1976-04-10
Applicant: BASF AG
Inventor： FOUQUET GERD DIPL CHEM DR , MERGER FRANZ DIPL CHEM DR , PLATZ ROLF DIPL CHEM DR , BAER KARL DIPL CHEM DR
IPC: C07C51/353 , C07C69/54 , C07C51/00 , C07C57/04 , C07C67/24
Abstract: Methacrylic acid and methyl methacrylate CH2 = C(CH3)-COOR' (where R1 is H or Me) are made by reacting propionic acid or methyl propionate CH3-CH2-COOR' with formaldehyde dimethylacetal CH3-O-CH2-O-CH3 (I) for 0.1-100 seconds. Reactions is in the presence of (i) 0-0.5 moles water per mol (I) and (ii) a catalyst comprising phosphates and/or silicates of Mg, Ca, Al, Zr, Th or Ti, opt. with the addn. of oxides of Zr, Al, Th and/or Ti and/or boric acid and/or urea. Catalyst is opt. modified by alkali(ne earth) carboxylates or cpds. forming these under the prevailing conditions, pref. with alkali propionate, KOH or LiOH. Process proceeds with high space-time yield and high selectivity to the prodn. of the desired prod. No additional diluent is required and the post treatment for recovery of the prod. is simple and economical in expenditure of energy. The unconverted (I) is easily recycled to the reaction.
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公开(公告)号：DE2526644A1
公开(公告)日：1976-12-30
申请号：DE2526644
申请日：1975-06-14
Applicant: BASF AG
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