中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

13 records (took 0.019 seconds)

    2.
    发明专利
    未知

    公开(公告)号：DE1643693A1

    公开(公告)日：1970-07-09

    申请号：DEB0095375

    申请日：1967-11-11

    Applicant: BASF AG

    Inventor： FRITZ BECK DR ,  ANDREAS BRUNOLD DIPL-ING ,  WALTER HIMMELE DR ,  JUERGEN HAUFE DR

    IPC: C25B3/29

    Abstract: Process for the electrochemical condensation of carboxylic acids by the electrolysis of monocarboxylic acids, half esters of dicarboxylic acids or aminocarboxylic acids in which current densities of more than 10 amp./dm.2 on vibrating electrode pairs are used, and in which the degree of neutralization of the carboxylic acids is kept below 10 percent, said process providing high space-time yields and a reaction product which can be worked up without difficulty.

    5.
    发明专利
    未知

    公开(公告)号：DE1918695A1

    公开(公告)日：1970-10-15

    申请号：DE1918695

    申请日：1969-04-12

    Applicant: BASF AG

    Inventor： WALTER HIMMELE DR ,  WERNER AQUILA DR ,  RICHARD PRINZ DR

    IPC: C11B9/00 ,  C07C69/02

    Abstract: 1299243 Carboxylic esters of 3-formylbuten- (3)-ol-(1) BADISCHE ANILIN & SODA FABRIK AG 10 April 1970 [12 April 1969] 17096/70 Heading C2C Carboxylic esters of 3-formylbuten-(3)-ol-(1) of general formula where R denotes alkyl 1-18C or a phenyl which may bear one or two alkoxy or alkyl groups (1-4C), chlorine atoms, amino groups or into groups as substituents are prepared by reacting a bismonocarboxylic ester of butene-(2)-diol-(1,4) with carbon monoxide and hydrogen in the presence of a carbonyl complex of rhodium at 50 to 110‹ C. and 300 to 1000 atmospheres. Modifying agents such as phosphites of alkanols, cycloalkanols or phenols, or tri-substituted phosphines may be used and the reaction may be in an inert solvent. Examples describe the preparation of butene-(2)-diol-(1,4) diacetate and dipropionate.

Patent Agency Ranking