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公开(公告)号：DE3070092D1
公开(公告)日：1985-03-21
申请号：DE3070092
申请日：1980-03-17
Applicant: BASF AG
Inventor： BRAUNE PETER DR , REBAFKA WALTER DR , WEYLAND PETER DR
Abstract: 1. A process for the production of cellular or non-cellular polyurethane elastomers from organic polyisocyanates, relatively high molecular weight polyhydroxy compounds and chain extenders in the presence or absence of catalysts, blowing agents, auxiliaries and additives, wherein there are used as polyhydroxy compounds polyester polyols obtained by polycondensation of an organic dicarboxylic acid with an alcohol mixture consisting of 40 to 100% by weight, based on the alcohol mixture, of a diol mixture which in its turn consists essentially of (a) 10 to 30% by weight of 1,4-butanediol, (b) 40 to 60% by weight of 1,5-pentanediol, and (c) 15 to 35% by weight of 1,6-hexanediol, the percentages by weight being based on the total weight of the diol mixture, and 60 to 0% by weight, based on the alcohol mixture, of a dihydric alcohol selected from the group consisting of ethylene glycol, 1,2-propylene glycol, 1,3-propylene glycol, 1,8-octanediol, neopentyl glycol, 1,4-bis-(hydroxymethyl)cyclohexane, 2-methyl-1,3-propanediol, 3-methyl-1,5-pentanediol, diethylene glycol, dipropylene glycol and dibutylene glycol, or 90 to 98% by weight, based on the alcohol mixture, of the above diol mixture, and 2 to 10% by weight, based on the alcohol mixture, of a trihydric and/or tetrahydric alcohol.
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公开(公告)号：DE3063676D1
公开(公告)日：1983-07-14
申请号：DE3063676
申请日：1980-07-01
Applicant: BASF AG
Inventor： NISSEN AXEL DR , KAIBEL GERD , WOERZ OTTO , ARNOLD LOTHAR DR , BRAUN MANFRED , REBAFKA WALTER DR
Abstract: An improved process for the preparation of higher unsaturated ketones, such as geranylacetone and farnesylacetone, by reacting a beta , gamma -unsaturated alcohol and an alkyl acetoacetate at an elevated temperature in the presence of an organic aluminum compound, with elimination, and removal, of the alcohol derived from the alkyl acetoacetate in a reactor system carrying a fractionating column. The improvement in the purity, yield, and especially space-time yield of the product is achieved by starting from an alcohol having a higher boiling point than that of the alkyl acetoacetate used, carrying out the reaction in the presence of a small amount of an inert liquid which has a boiling point between that of the alkyl acetoacetate and the alcohol to be eliminated therefrom, and ensuring that the temperature at the bottom of the fractionating column is only slightly higher than the boiling point of the added liquid, under the prevailing pressure.
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公开(公告)号：DE3560105D1
公开(公告)日：1987-05-07
申请号：DE3560105
申请日：1985-01-25
Applicant: BASF AG
Inventor： REBAFKA WALTER DR , NICKELS HELMUT DR
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公开(公告)号：DE3461027D1
公开(公告)日：1986-11-27
申请号：DE3461027
申请日：1984-10-12
Applicant: BASF AG
Inventor： LINDNER ALFRED DR , WAGNER ULRICH DR , VOLKAMER KLAUS DR , REBAFKA WALTER DR
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公开(公告)号：DE3266878D1
公开(公告)日：1985-11-14
申请号：DE3266878
申请日：1982-12-16
Applicant: BASF AG
Inventor： REBAFKA WALTER DR , NICKELS HELMUT DR
IPC: C07C69/025 , B01J31/00 , B01J31/10 , C07B61/00 , C07C27/00 , C07C29/04 , C07C33/025 , C07C33/03 , C07C35/02 , C07C67/00 , C07C67/04 , C07C69/145
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Patent Agency Ranking
公开(公告)号：DE3162283D1
公开(公告)日：1984-03-22
申请号：DE3162283
申请日：1981-07-04
Applicant: BASF AG
Inventor： REBAFKA WALTER DR , SCHOSSIG JUERGEN DR , REISS WOLFGANG DR , VOGES DIETER DR
IPC: C07D263/44 , B01J23/00 , C07B61/00 , C07D207/06 , C07D207/08 , C07D211/02 , C07D211/14 , C07D211/20 , C07D295/02 , C07D295/023
Abstract: N-Alkylpiperidines or N-alkylpyrrolidines are obtained by hydrogenating a corresponding N-alkyldicarboxylic acid imide over a fixed catalyst by first working to only partial conversion, for example of about 50%, and distilling off the required product together with water from the partially converted mixture, where appropriate with recycling of the unconverted remainder.
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公开(公告)号：DE3160100D1
公开(公告)日：1983-04-14
申请号：DE3160100
申请日：1981-01-15
Applicant: BASF AG
Inventor： REBAFKA WALTER DR , HEILEN GERD DR , KLINK WALTER DR
IPC: C07C55/14 , C07C51/00 , C07C51/44 , C07C51/487 , C07C67/00
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公开(公告)号：DE3060336D1
公开(公告)日：1982-06-09
申请号：DE3060336
申请日：1980-05-27
Applicant: BASF AG
Inventor： NISSEN AXEL DR , REBAFKA WALTER DR , AQUILA WERNER DR
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公开(公告)号：DE2860102D1
公开(公告)日：1980-11-13
申请号：DE2860102
申请日：1978-11-08
Applicant: BASF AG
Inventor： REBAFKA WALTER DR
IPC: C07C69/007 , B01J23/00 , B01J27/00 , C07B31/00 , C07B35/08 , C07B61/00 , C07C27/00 , C07C29/00 , C07C29/17 , C07C29/56 , C07C33/02 , C07C41/00 , C07C43/02 , C07C43/178 , C07C45/00 , C07C47/277 , C07C51/00 , C07C59/58 , C07C67/00 , C07C67/28 , C07C67/293 , C07C69/145 , C07B29/00
Abstract: The process for the manufacture of but-2-en-1-ol compounds by isomerizing but-3-en-1-ol compounds in the presence of a palladium catalyst and of hydrogen is improved by modifying the palladium catalyst with selenium or tellurium. The but-2-en-1-ols manufactured according to the invention are either solvents or valuable starting materials for the manufacture of solvents, dyes, surface coatings, paints and pesticides.
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10.发明专利
公开(公告)号：DE3269843D1
公开(公告)日：1986-04-17
申请号：DE3269843
申请日：1982-09-18
Applicant: BASF AG
Inventor： AQUILA WERNER DR , NISSEN AXEL DR , KAIBEL GERD , HORNER MICHAEL DR , REBAFKA WALTER DR
IPC: A61K8/33 , A61Q13/00 , B01D3/34 , B01D3/38 , C07B31/00 , C07B63/00 , C07C27/00 , C07C29/141 , C07C29/80 , C07C31/04 , C07C33/025 , C07C45/00 , C07C45/82 , C07C47/21 , C07C67/00 , C11B9/00 , C11B9/02
Abstract: Distillative separation of liquid mixtures of one or more water-insoluble substances which have boiling points higher than that of water and one or more substances which have boiling points lower than that of water or which form azeotropes having boiling points lower than that of water, wherein the mixture to be distilled is mixed with a quantity of water such that the boiling point of the water under the pressure applied limits the bottom temperature of the mixture of substances to be separated.
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