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    41.
    发明专利
    未知

    公开(公告)号：ES2043636T3

    公开(公告)日：1994-01-01

    申请号：ES87118201

    申请日：1987-12-09

    Applicant: BASF AG

    Inventor： DOCKNER TONI DR ,  SAUERWALD MANFRED ,  FISCHER ROLF DR ,  HUTMACHER HANS-MARTIN DR ,  PRIESTER CLAUS-ULRICH DR ,  VAGT UWE DR

    IPC: C07D201/08 ,  C07D201/16

    Abstract: In an improved process for preparing caprolactam by heating 6-aminocaproic acid, an ester or amide or mixture thereof in the presence of an inert reaction medium which is liquid under the reaction conditions and has a boiling point above that of caprolactam, the improvement comprises using as the reaction medium a hydrocarbon, maintaining a temperature of from 150 DEG to 350 DEG C., charging the 6-aminocaproic acid, ester, amide or mixture thereof at a rate commensurate with their rate of conversion, and separating caprolactam from the reaction mixture at a rate commensurate with its rate of formation.

    New 2,2-di:substd. pentane-1,5-di:amine(s), prepn. - by reaction of 2,2-di:substd. 4-cyano-butanal in two separate zones, first with ammonia then with hydrogen
    43.
    发明专利
    New 2,2-di:substd. pentane-1,5-di:amine(s), prepn. - by reaction of 2,2-di:substd. 4-cyano-butanal in two separate zones, first with ammonia then with hydrogen 未知

    公开(公告)号：DE4010252A1

    公开(公告)日：1991-10-02

    申请号：DE4010252

    申请日：1990-03-30

    Applicant: BASF AG

    Inventor： MERGER FRANZ DR ,  PRIESTER CLAUS-ULRICH DR ,  WITZEL TOM DR ,  KOPPENHOEFER GERHARD DR ,  SCHUSTER LUDWIG DR

    IPC: C07C209/48 ,  C07C211/09

    Abstract: Prepn. of 2,2-disubstd. pentane-1,5-diamines of formula (I) is claimed, some of which are claimed as novel cpds.. The prepn. of (I) is from 2,2-disubstd.-4-cyano-butanals of formula (II) by reaction in two separate zones such that (i) (II) is treated at 20-150 deg.C/15-500 bar with an excess of ammonia in presence of an acidic heterogeneous catalyst in a first reaction zone; and (ii) the prod. of step (i) is treated in a second reaction zone at 60-150 deg.C/50-500 bar with H2 in presence of an excess of ammonia using a Co-, Ni-, Ru and/or other noble metal-contg. catalyst opt. with basic components or on a basic or neutral carrier. In the formulae, R1 and R2 = are each. 1-10C alkyl or 2-10C alkenyl or together form a 4-7C alkylene chain opt. substd. by one to five 1-4C alkyl gps.. The novel claimed cpds. are of formula (I) with the proviso that R1 and R2 are not simultaneously Me, specifically claimed novel cpds. being 2-Me-2-n-propylpentane-1,5-diamine; and 2-nBu-2-ethylpentane- 1,5-diamine. USE/ADVANTAGE - On account of their high degree of substn., (I) are distinguished by (a) their reduced volatility in comparison to 2-Me- and 2,2-di-Me-pentanediamines and (b) their asymmetric amine functionality. (I) show low odour and can be converted to diisocyanates. (8pp Dwg.No.0/0)

    46.
    发明专利
    未知

    公开(公告)号：DE3643011A1

    公开(公告)日：1988-06-30

    申请号：DE3643011

    申请日：1986-12-17

    Applicant: BASF AG

    Inventor： DOCKNER TONI DR ,  SAUERWALD MANFRED DR ,  FISCHER ROLF DR ,  HUTMACHER HANS-MARTIN DR ,  PRIESTER CLAUS-ULRICH DR ,  VAGT UWE DR

    IPC: C07D201/08 ,  C07D201/16 ,  C07D213/10

    Abstract: In an improved process for preparing caprolactam by heating 6-aminocaproic acid, an ester or amide or mixture thereof in the presence of an inert reaction medium which is liquid under the reaction conditions and has a boiling point above that of caprolactam, the improvement comprises using as the reaction medium a hydrocarbon, maintaining a temperature of from 150 DEG to 350 DEG C., charging the 6-aminocaproic acid, ester, amide or mixture thereof at a rate commensurate with their rate of conversion, and separating caprolactam from the reaction mixture at a rate commensurate with its rate of formation.

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