公开(公告)号：DE4211141A1

公开(公告)日：1993-10-07

申请号：DE4211141

申请日：1992-04-03

Applicant: BASF AG

Inventor： KIEFER HANS DR ,  HUPFER LEOPOLD DR ,  LIPPERT FERDINAND DR

IPC: C07C51/02 ,  C07C53/02

Abstract: A process for preparing formic acid by thermal cleavage of quaternary ammonium formates of the general formula I (* CHEMICAL STRUCTURE *) (I) where R1, R2 and R3 are C1- to C14-alkyl, C3- to C8-cycloalkyl, aryl or C7- to C16-aralkyl, or together are 1,4- or 1,5-alkylene which is unsubstituted or substituted one to four times by C1-to C4-alkyl, with the proviso that the sum of the carbon atoms of R1, R2 and R3 in the quaternary ammonium formates I is 7 to 40, comprises carrying out the cleavage in the presence of secondary formamides of the general formula II (* CHEMICAL STRUCTURE *) (II) where R4 and R5 are C2- to C10-alkyl, C3- to C8-cycloalkyl, aryl or C7- to C16-aralkyl, or together are 1,4- or 1,5-alkylene which is unsubstituted or substituted one to four times by C1- to C4-alkyl, which formamides boil 30 degrees to 150 degrees C. lower than the tertiary amine of the general formula III (* CHEMICAL STRUCTURE *) (III) where R1, R2 and R3 have the abovementioned meanings, contained in the formate I.

公开(公告)号：DE59001425D1

公开(公告)日：1993-06-17

申请号：DE59001425

申请日：1990-08-10

Applicant: BASF AG

Inventor： FRANZISCHKA WOLFGANG DR ,  HUPFER LEOPOLD DR ,  HENKELMANN JOCHEM DR ,  KAHL THOMAS-MICHAEL DR ,  SAUERWALD MANFRED DR

IPC: B01J31/02 ,  A01N37/02 ,  C07B61/00 ,  C07C51/58 ,  C07C51/60 ,  C07C53/50

公开(公告)号：AT90327T

公开(公告)日：1993-06-15

申请号：AT88119194

申请日：1988-11-18

Applicant: BASF AG

Inventor： SMUDA HUBERT DR ,  HOELDERICH WOLFGANG DR ,  GOETZ NORBERT DR ,  RECKER HANS-GERT DR ,  HUPFER LEOPOLD DR

IPC: C07C45/51 ,  C07C45/52 ,  C07C45/54 ,  C07C45/58 ,  C07C47/228 ,  C07C47/24 ,  C07C47/277

公开(公告)号：DE58902845D1

公开(公告)日：1993-01-14

申请号：DE58902845

申请日：1989-04-05

Applicant: BASF AG

Inventor： HIMMELE WALTER DR ,  HUPFER LEOPOLD DR ,  GOETZ NORBERT DR ,  HOELDERICH WOLFGANG DR

IPC: C07C41/48 ,  C07C43/315 ,  C07C45/49 ,  C07C47/198 ,  C07C67/327 ,  C07C69/734

公开(公告)号：DE4116365A1

公开(公告)日：1992-11-19

申请号：DE4116365

申请日：1991-05-18

Applicant: BASF AG

Inventor： HENKELMANN JOCHEM DR ,  TROETSCH-SCHALLER IRENE DR ,  WETTLING THOMAS DR ,  KAHL THOMAS-MICHAEL DR ,  HUPFER LEOPOLD DR ,  FRANZISCHKA WOLFGANG DR ,  KOEHLER HERMANN DR

IPC: B01J31/02 ,  C07B39/00 ,  C07B61/00 ,  C07C17/16 ,  C07C19/01 ,  C07C21/02 ,  C07C21/22 ,  C07C41/22 ,  C07C43/225

Abstract: Process for the preparation of alkyl, alkenyl and alkynyl chlorides by reaction of the corresponding alcohols with phosgene or thionyl chloride in the presence of a phosphine oxide as a catalyst, by using aliphatic, cycloaliphatic or cyclic-aliphatic phosphine oxides as catalyst.

公开(公告)号：DE4039750A1

公开(公告)日：1992-06-17

申请号：DE4039750

申请日：1990-12-13

Applicant: BASF AG

Inventor： HENKELMANN JOCHEM DR ,  KAHL THOMAS-MICHAEL DR ,  TROETSCH-SCHALLER IRENE DR ,  HUPFER LEOPOLD DR ,  FRANZISCHKA WOLFGANG DR ,  SCHWARZ WOLFGANG DR

IPC: B01D53/14 ,  B01D53/34 ,  B01D53/70

Abstract: To remove phosgene from off-gases, the former is reacted in a washing zone with a liquid which contains or is composed of compounds of the formula where R1 and R2 are identical or different and are each aliphatic or cycloaliphatic alkyl of 1 to 8 carbons, or R1 and R2 are -(CH2)n- where n is 4 or 5, R3 is hydrogen or aliphatic or cycloaliphatic alkyl of 1 to 6 carbon atoms, or R1 or R2 and R3 are -(CH2)m- where m is 3, 4 or 5. The liquid can be regenerated by the addition of water, and the regenerated liquid can be returned to the washing zone.

公开(公告)号：DE3869792D1

公开(公告)日：1992-05-14

申请号：DE3869792

申请日：1988-01-22

Applicant: BASF AG

Inventor： HOELDERICH WOLFGANG DR ,  HUPFER LEOPOLD DR ,  SCHNEIDER KURT DR

IPC: C07C45/65 ,  C07C45/67 ,  C07C49/04 ,  C07C49/29 ,  C07C49/76

Abstract: Ketones of formula (I) are prepd. from hydroxy-, alkoxy- or carboxy-substd. ketones of formula (II) by simultaneous dehydration and hydrogenation in the presence of acid catalyst (III) contg. hydrogenation component(s): (In (I), R1-3 = H and R1 and R4 = opt. substd. 1-12C alkyl, 4-8C cycloalkyl, aryl, aralkyl or alkylaryl or R1 and R2 and R3 with the C atom to which they are attached can = cycloalkane; In (II), one of R1, R2, R3 or R5 = OH, alkoxy or COOH and the other gps. are as in (I).) (III) are zeolites, pref. of the pentasil type or alumino-silicate zeolites of the faujasite type; phosphates, pref. Al, Si-Al, Si-Fe-Al, Fe or Fe-Al phosphates produced by hydrothermal synthesis; or Al, B, Ti, Zr and/or Si oxide(s). The hydrogenation component is transition and/or noble metal(s) and (III) may also be doped with alkali(ne earth) or rare earth metals.

公开(公告)号：DE3900379A1

公开(公告)日：1990-07-12

申请号：DE3900379

申请日：1989-01-09

Applicant: BASF AG

Inventor： STEINIGER MICHAEL DR ,  VOSS HARTWIG DR ,  HUPFER LEOPOLD DR

IPC: B01D61/24 ,  B01D61/44 ,  C07C45/00 ,  C07C45/28 ,  C07C45/78 ,  C07C45/80 ,  C07C47/127

Abstract: Method of purification of aqueous glyoxal solutions which contain organic acids by means of a membrane cell consisting of at least two chambers, in which the glyoxal solution is passed through at least one of the chambers of the cells, which is separated from the adjacent chamber(s) by an anion exchanger cell and where the aqueous solution of a base is passed through at least one of the adjacent chambers.

公开(公告)号：DE3761139D1

公开(公告)日：1990-01-18

申请号：DE3761139

申请日：1987-09-05

Applicant: BASF AG

Inventor： SPIEGLER WOLFGANG DR ,  HOELDERICH WOLFGANG DR ,  GOETZ NORBERT DR ,  HUPFER LEOPOLD DR ,  WILD JOCHEN DR

IPC: A01N43/18 ,  B01J29/40 ,  B01J29/70 ,  B01J29/83 ,  B01J29/85 ,  B01J29/86 ,  C07D309/04 ,  C07D309/06 ,  C07D309/10 ,  C07D405/04 ,  C07D407/04 ,  C07D409/04 ,  C07D411/04

Abstract: 4-Formyltetrahydropyrans of the general formula I (I) where R1 is hydrogen, C1-C12-alkyl, C2-C12-alkenyl, C1-C6-alkoxy-substituted C1-C12-alkyl, C4-C12-cycloalkyl, unsubstituted or substituted aryl, hetaryl or aralkyl, or an unsubstituted or substituted, saturated or unsaturated 5-membered or 6-membered ring which may be interrupted by N, O or S, are prepared by a process in which a pyran derivative of the general formula II (II) where R1 is as defined above, R2 and R3 are each OH or together are an oxygen atom and thus form an oxirane ring, and R4 is hydrogen where R2 and R3 are each OH, and is hydrogen or tert-butoxycarbonyl where R2 and R3 together are an oxygen atom, is treated at elevated temperatures with a catalyst selected from the group consisting of zeolites, phosphates, boric acid on a carrier and silica or mixtures of these. Novel 4-formyltetrahydropyrans are also proposed.

公开(公告)号：DE3804162A1

公开(公告)日：1989-08-24

申请号：DE3804162

申请日：1988-02-11

Applicant: BASF AG

Inventor： HOELDERICH WOLFGANG DR ,  GOETZ NORBERT DR ,  HUPFER LEOPOLD DR

IPC: C07C41/28

Abstract: A process for the preparation of vinyl ethers of the formula in which R to R are identical to or different from one another and represent hydrogen, straight-chain or branched alkyl or alkenyl radicals having up to 12 carbon atoms, cycloalkyl or cycloalkylene radicals having 5 to 8 carbon atoms, aryl, alkylaryl, alkenylaryl, aralkyl and aralkenyl radicals having 6 to 16 carbon atoms, halogen-substituted aryl radicals or heterocyclic radicals and the radicals R and R or R and R , together with the C atom to which they are bonded, can moreover form a cycloalkane, cycloalkene or a heterocycle, and R represents alkyl or alkylaryl or aralkyl radicals, in which alcohols are eliminated from acetals/ketals of the formula in which R to R have the above meaning, in the presence of phosphates having a zeolite structure and/or precipitated phosphates of the elements B, Zr, Ce, Fe and/or phosphoric acid or boric acid on a support material and/or acidic undoped metal oxides as catalysts. The reaction is preferably carried out in the gas phase.