公开(公告)号：DE3060167D1

公开(公告)日：1982-03-11

申请号：DE3060167

申请日：1980-02-22

Applicant: BAYER AG

Inventor： BECKER ROBERT DR ,  GROLIG JOHANN DR ,  RASP CHRISTIAN DR

IPC: B01J27/10 ,  B01J21/00 ,  B01J23/00 ,  B01J23/56 ,  B01J23/89 ,  B01J27/00 ,  B01J31/00 ,  B01J31/28 ,  C07C67/00 ,  C07C239/00 ,  C07C269/04 ,  C07C125/065 ,  C07C125/073

Abstract: A process for producing urethanes by reacting primary amines, carbon monoxide and organic hydroxyl compounds in the presence of molecular oxygen and/or organic nitro compounds as oxidizing agents and a catalyst system comprising a noble metal and/or a compound of a noble metal of the 8th subgroup of the Periodic System of Elements and a compound capable of undergoing Redox reactions under reaction conditions of the 3rd to 5th main group and/or 1st to 8th subgroup of the Periodic System of Elements.

公开(公告)号：DE2819826A1

公开(公告)日：1979-11-08

申请号：DE2819826

申请日：1978-05-05

Applicant: BAYER AG

Inventor： BECKER ROBERT DR ,  GROLIG JOHANN DR ,  RASP CHRISTIAN DR ,  SCHARFE GERHARD DR

IPC: C07C269/00 ,  B01J23/44 ,  B01J27/00 ,  B01J27/06 ,  B01J31/00 ,  C07C67/00 ,  C07C239/00 ,  C07C125/06

Abstract: This invention relates to an improved process for the production of urethanes (i.e. carbamic acid esters) by reacting organic nitro compounds with carbon monoxide and organic compounds containing at least one hydroxy group in the presence of a unique catalyst system. The catalyst system consists of palladium or a palladium compound and iron oxychloride or a mixture of iron compounds containing iron oxychloride.

公开(公告)号：DE2504981A1

公开(公告)日：1976-08-19

申请号：DE2504981

申请日：1975-02-06

Applicant: BAYER AG

Inventor： RASP CHRISTIAN DR ,  SCHARFE GERHARD DR

IPC: C07C45/54 ,  C07C51/09 ,  C07C67/055 ,  C07C33/02 ,  C07B3/00 ,  C07C47/02 ,  C07C49/08 ,  C07D303/04

Abstract: 3-Step process for prepn. of propylene oxidn. prods. having general summation formula C3H6O (I) e.g. propylene oxide, allyl alcohol, propionaldehyde and/or acetone, takes place by (a) reacting either C2H4, O2 and ACOH or C2H2 and AcOH to form vinyl acetate, (b) catalytically converting vinyl acetate with CO and H2 to 2-acetoxypropanol (II) (c) decomposing (II) thermally or catalytically, to (I) and AcOH. Process enables (i) prepn. of (I) from raw matls. other than propylene, (ii) prepn. of (I) in one plant. Compsn. of (I) can be adjusted by working conditions and catalyst in (c), e.g. propylene oxide is obtd. with basic catalysts, whereas allyl alcohol and propionaldehyde are obtd. predominantly on working without a catalyst or with acid catalyst.

公开(公告)号：ES2166922T3

公开(公告)日：2002-05-01

申请号：ES97103444

申请日：1997-03-03

Applicant: BAYER AG

Inventor： SCHLEENSTEIN DIETER ,  RASP CHRISTIAN DR ,  RONGE GEORG DR ,  WILMES OSWALD DR

IPC: C07C263/04 ,  C07C265/04 ,  C07C265/14 ,  C07C269/06 ,  C07C271/20

Abstract: The use of a solvent (I) for the thermal cracking of carbamic esters (II) is claimed. (I) has a definite b.pt. (pure substance) or a narrow boiling range

公开(公告)号：DE2435406A1

公开(公告)日：1976-02-05

申请号：DE2435406

申请日：1974-07-23

Applicant: BAYER AG

Inventor： BOTTA ARTUR DR ,  RASP CHRISTIAN DR

IPC: C07D471/04 ,  C07D471/14 ,  C07D487/04 ,  C07D487/06 ,  C10N30/12 ,  C23F11/14 ,  C07D235/02

Abstract: 1,2-FUSED FIVE-MEMBERED OR SIX-MEMBERED 1,3-DINITROGEN-HETEROCYCLIC COMPOUNDS, USFUL AS ANTI-CORROSION AGENTS, HAVING THE FORMULA (I) wherein A is an optionally substituted, optionally polynuclear orth- or peri-arylene radical and B is an optionally substituted alkylene chain WHEREIN R1 and R2 individually represent hydrogen and/or optionally substituted aliphatic, cycloaliphatic, araliphatic or aromatic radicals and N REPRESENTS A NUMBER FROM 3 TO 6, OR B is an optionally substituted 1,8-naphthylene, 2,2'-diphenylene or 4,5-phenanthrylene radical, ARE PREPARED BY SPLITTING A FIVE-MEMBERED OR SIX-MEMBERED 1,3- DINITROGEN-HETEROCYCLIC COMPOUND, WHICH CONTAINS A 2-( omega -AMINO GROUP) SIDE CHAIN, HAVING THE FORMULA (II) wherein A and B have the meanings indicated above and R3 and R4 are hydrogen, lower alkyl, cycloalkyl or aralkyl but at least one of the two radicals R3 and R4 must represent hydrogen.

公开(公告)号：DE2434909A1

公开(公告)日：1976-02-05

申请号：DE2434909

申请日：1974-07-19

Applicant: BAYER AG

Inventor： SCHARFE GERHARD DR ,  GROLIG JOHANN DR ,  RASP CHRISTIAN DR

IPC: C07C51/09 ,  C07C67/03 ,  C07C31/20

Abstract: 1,2-Butanediols and 2-methylpropane-1,3-diol are simultaneously prepd. by reacting propylene, O2 and acetic acid in the presence of a Pd catalyst to form water and allyl acetate in a first stage; the allyl acetate is reacted with CO and H2 in the presence of a catalyst to form a mixture of 2-and 4- acetoxy-butan-1-ol and 3-acetoxy-2-methyl-propan-1-ol in a second stage; catalytic reaction with methanol in a third stage to form the mixture of butanediols and methyl acetate, which in a fourth stage is reacted with the water from the first stage in the presence of a cation acid exchanger to form methanol, which is recycled to the third stage, and acetic acid, which is recycled to the first stage. The diols are used as solvents and also as intermediates for polyurethanes, polyesters, polyamides, epoxy resins and plasticisers.

公开(公告)号：DE19618828A1

公开(公告)日：1997-11-13

申请号：DE19618828

申请日：1996-05-10

Applicant: BAYER AG

Inventor： SCHLEENSTEIN DIETER ,  RASP CHRISTIAN DR ,  RONGE GEORG DR ,  WILMES OSWALD DR

IPC: C07C263/04 ,  C07C265/14

Abstract: The use of a solvent (I) for the thermal cracking of carbamic esters (II) is claimed. (I) has a definite b.pt. (pure substance) or a narrow boiling range

公开(公告)号：DE4407181A1

公开(公告)日：1995-09-07

申请号：DE4407181

申请日：1994-03-04

Applicant: BAYER AG

Inventor： RASP CHRISTIAN DR ,  GUPTA PRAMOD DR ,  RABE HANSJUERGEN DR ,  LEYRER ULRICH DR ,  GEBAUER HERBERT DR

IPC: C08G18/40 ,  C08G71/02 ,  C10M107/44 ,  C07D207/26 ,  C07D223/10 ,  C07D225/02 ,  C07D227/087 ,  C08G18/64 ,  C08J3/09

Abstract: Dispersions (A) of polyureas (B) in cpds. (C) contg. isocyanates and having a mol. wt. of 400-12000-prepd. by reacting carbonic acid diamides of formula (I) NHR-C(O)-NHR with cpds. contg. at least (capped) amino gp(s)., chosen from di prim. diamines of formula (11) NH2-R'-NH2 or lactams of formula (III), at 70-220 deg.C in the presence of (C) and opt. emulsifier; R = H or 1-4C alkyl; R' = 6-15C aryl, 8-15C arylalkyl, 8-18C alkyl, 4-15C cycloalkyl or R" = H or methyl; n = 1-450; and n' = 3-17.

公开(公告)号：DE3060032D1

公开(公告)日：1981-12-24

申请号：DE3060032

申请日：1980-02-21

Applicant: BAYER AG

Inventor： BECKER ROBERT DR ,  GROLIG JOHANN DR ,  RASP CHRISTIAN DR ,  STAMMANN GUNTER DR

IPC: C07C239/00 ,  C07C67/00 ,  C07C271/06 ,  C07C125/065

Abstract: Production of urethanes by the oxycarbonylation reaction of N,N'-disubstituted ureas and organic compounds containing at least one hydroxyl group with carbon monoxide in the presence of molecular oxygen and/or organic nitro compounds and a catalyst system comprising (a) a noble metal and/or noble metal compound of the eighth subgroup of the periodic system of elements and (b) a compound of an element and/or elements of the third to fifth main group and/or first to eighth subgroup of the periodic system of elements characterized in that said compounds are capable of undergoing Redox reactions under the reaction conditions.

公开(公告)号：CH597137A5

公开(公告)日：1978-03-31

申请号：CH809375

申请日：1975-06-20

Applicant: BAYER AG

Inventor： RASP CHRISTIAN DR ,  GROLIG JOHANN DR

IPC: C07C69/16 ,  B01J23/00 ,  B01J23/40 ,  B01J23/74 ,  C07B61/00 ,  C07C20060101 ,  C07C31/20 ,  C07C67/00 ,  C07C67/28 ,  C07C69/14

Abstract: In the process for the preparation of an acetoxybutanol by hydrogenation of the corresponding acetoxybutyraldehyde in the presence of metals of group VIII of the periodic table, the improvement which comprises carrying out the hydrogenation in the presence of methanol. The rate of reaction is improved by the use of methanol.