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公开(公告)号：DE3265263D1
公开(公告)日：1985-09-12
申请号：DE3265263
申请日：1982-10-20
Applicant: BASF AG
Inventor： MERGER FRANZ DR , NESTLER GERHARD DR , PLATZ ROLF DR , TOWAE FRIEDRICH DR , HELLBACH HANS
IPC: C07C263/04 , C07C265/04 , C07C118/00
Abstract: Organic isocyanates, preferably alkyl, mono-, di- and/or polyisocyanates or aryl-mono-, di- and/or polyisocyanates, are prepared by thermally cleaving the corresponding urethanes at temperatures of 175 DEG C. to 600 DEG C. in the presence of carbon, preferably in an agitated carbon bed or in a fluidized bed containing carbon.
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公开(公告)号：DE3162857D1
公开(公告)日：1984-05-03
申请号：DE3162857
申请日：1981-05-11
Applicant: BASF AG
Inventor： HARDER WOLFGANG DR , MERGER FRANZ DR , TOWAE FRIEDRICH DR
Abstract: Carbonates are prepared by reacting carbamic acid esters with alcohols at above 140 DEG C., the ammonia formed being stripped from the reaction mixture during the reaction by passing an inert gas or vapor therethrough. The carbonates obtainable by the process of the invention are valuable starting materials for the preparation of dyes, crop protection agents and plastics.
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公开(公告)号：DE3061318D1
公开(公告)日：1983-01-20
申请号：DE3061318
申请日：1980-04-23
Applicant: BASF AG
Inventor： MERGER FRANZ DR , TOWAE FRIEDRICH DR
IPC: B01J27/10 , B01J31/04 , C07B61/00 , C07C67/00 , C07C239/00 , C07C269/00 , C07C269/04 , C07C271/06 , C07C271/28 , C07C271/30 , C07C125/073 , C07C125/077
Abstract: A method for the production of N-aryl substituted di- and polyurethanes in high yield, by the reaction of an aromatic di- or polyamine with urea and alcohol at high temperatures. The di- and polyurethanes thus produced have utility as isocyanate precursors.
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公开(公告)号：DE3462885D1
公开(公告)日：1987-05-07
申请号：DE3462885
申请日：1984-04-17
Applicant: BASF AG
Inventor： MERGER FRANZ DR , TOWAE FRIEDRICH DR , HELLBACH HANS , ISBARN GUNTHER DR , KOEHLER WALDEMAR DR
IPC: C07C265/14 , C07C67/00 , C07C69/00 , C07C241/00 , C07C263/04 , C07C263/06 , C07C265/04 , C07C118/00 , C07C119/042
Abstract: Hexamethylene diisocyanate and/or isomeric alkylene diisocyanates having 6 carbon atoms in the alkylene radical, preferably 2-methylpentamethylene 1,5-diisocyanate and/or 2-ethyltetramethylene 1,4-diisocyanate are prepared without the use of phosgene in a multiple-step process by means of (a) reacting hexamethylene 1,6-diamine and/or isomeric alkylene diamines having 6 carbon atoms in the alkylene radical with urea and alcohol in the presence of dialkyl carbonate and/or carbamic acid alkyl ester as well as, in some cases, catalysts to form hexamethylene 1,6-dialkylurethane and/or isomeric alkylene dialkylurethanes having 6 carbon atoms in the alkylene radical, (b) separation and return to reaction step (a) of alcohol, dialkyl carbonate, and/or carbamic acid alkyl ester from the reaction mixture (c) evaporation of the hexamethylene 1,6-dialkylurethane and/or isomeric alkylene dialkylurethanes having 6 carbon atoms in the alkylene radical, (d) cleavage of the vaporized diurethanes into hexamethylene diisocyanate and/or isomeric alkylene diisocyanate having 6 carbon atoms in the alkylene radical and alcohol, and (e) fractional condensation of the cleavage products.
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公开(公告)号：DE3269747D1
公开(公告)日：1986-04-10
申请号：DE3269747
申请日：1982-12-16
Applicant: BASF AG
Inventor： MATTNER OTTO , MERGER FRANZ DR , NESTLER GERHARD DR , TOWAE FRIEDRICH DR
IPC: C07C125/04
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Patent Agency Ranking
公开(公告)号：DE3339300A1
公开(公告)日：1985-05-09
申请号：DE3339300
申请日：1983-10-29
Applicant: BASF AG
Inventor： MATTNER OTTO , MERGER FRANZ DR , TOWAE FRIEDRICH DR
IPC: C07B43/10 , C07B31/00 , C07C67/00 , C07C69/00 , C07C241/00 , C07C263/04 , C07C265/00 , C07C265/04 , C07C265/12 , C07C119/042 , C07C119/048 , C07C118/00
Abstract: A process for the pyrolysis of mono-, di-, and polyurethanes to the corresponding mono-, di-, and polyisocyanates wherein the urethane to be cleaved is heated under pressure and sprayed through a nozzle into a pyrolysis chamber maintained at reduced pressure. The isocyanate and alcohol cleavage products are separated by fractional condensation.
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公开(公告)号：DE3325185A1
公开(公告)日：1985-01-24
申请号：DE3325185
申请日：1983-07-13
Applicant: BASF AG
Inventor： MERGER FRANZ DR , TOWAE FRIEDRICH DR
IPC: C07C265/04 , C07D265/28 , C07D295/10 , C07D295/12 , C07D295/13 , C07C119/042
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公开(公告)号：DE3061487D1
公开(公告)日：1983-02-03
申请号：DE3061487
申请日：1980-04-23
Applicant: BASF AG
Inventor： MERGER FRANZ DR , TOWAE FRIEDRICH DR
IPC: C07C269/04 , C07B61/00 , C07C67/00 , C07C239/00 , C07C269/00 , C07C271/08 , C07C271/34 , C07D239/04 , C07D239/10 , C07D295/12 , C07D295/13 , C08G18/70 , C07C125/073 , C07C125/077
Abstract: A process for the preparation of an aliphatic, cyclo-aliphatic, and/or aliphatic-cycloaliphatic di- and/or polyurethane comprising the steps of A. reacting a primary aliphatic, cycloaliphatic, and/or aliphatic-cycloaliphatic di- and/or polyamine with a carbamate in the presence of alcohol at temperatures of 160 DEG C. to 300 DEG C., and B. separating the ammonia and other by-products from the aliphatic, cycloaliphatic, and/or aliphatic-cycloaliphatic di- and/or polyurethane. One or more catalysts may be added to the reactants to increase the reaction rate. The aliphatic, cycloaliphatic, and/or aliphatic-cycloaliphatic di- and/or polyurethanes produced are valuable end and intermediate products. They can be transferred into the corresponding isocyanates which can then be used for the preparation of polyurethanes.
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公开(公告)号：DE2962642D1
公开(公告)日：1982-06-09
申请号：DE2962642
申请日：1979-10-31
Applicant: BASF AG
Inventor： HAGEN HELMUT DR , MARKERT JUERGEN DR , MERGER FRANZ DR , TOWAE FRIEDRICH DR
IPC: C07C255/53 , C07C148/00 , C07C120/00 , C07C121/75 , C07C149/415 , C07C149/42
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公开(公告)号：AT32060T
公开(公告)日：1988-02-15
申请号：AT84112671
申请日：1984-10-19
Applicant: BASF AG
Inventor： MATTNER OTTO , MERGER FRANZ DR , TOWAE FRIEDRICH DR
IPC: C07B43/10 , C07B31/00 , C07C67/00 , C07C69/00 , C07C241/00 , C07C263/04 , C07C265/00 , C07C265/04 , C07C265/12 , C07C118/00 , C07C119/042
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