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23 records (took 0.022 seconds)

    12.
    发明专利
    未知

    公开(公告)号：DE3777348D1

    公开(公告)日：1992-04-16

    申请号：DE3777348

    申请日：1987-12-09

    Applicant: BASF AG

    Inventor： HESSE ANTON DR ,  TRAUTMANN WALTER DR ,  HENKES ERHARD DR

    IPC: C08L67/06 ,  C08F299/04 ,  C08K5/17 ,  C08L63/10

    Abstract: Thermosetting unsatd. polyester moulding compsns. contain a mixt. of an ethylenically unsatd. polyester (IA) or vinyl ester (IB) with terminal unsatd., ethylenically unsatd. monomers (II), which can copolymerise with (I), 5-200 (wt.)% fibrous reinforcement, 50-350% powdered filler, 0.1-4% organic free radical initiators and 0.1-6% viscosity reducing agent (III), all w.r.t. (I)+(II), and opt. the usual thickeners, shrinkage-reducing or elastifying organic polymers, lubricants, inhibitors, pigments and cure accelerators. The novelty is that (III) is an amino-acid of formula: (R1)(R2)N-X-COOH (III) R1 = H or 1-4C alkyl; R2 = 6-30C satd. or unsatd., linear or branched aliphatic alkyl or acyl; X = 1-6C linear or branched alkylene.

    PROCESS FOR THE PREPARATION OF 1,3-DISUBSTITUTED-2-OXO-4,5-IMIDAZOLINEDICARBOXYLIC ACID
    16.
    发明专利
    PROCESS FOR THE PREPARATION OF 1,3-DISUBSTITUTED-2-OXO-4,5-IMIDAZOLINEDICARBOXYLIC ACID 未知

    公开(公告)号：DE3266439D1

    公开(公告)日：1985-10-24

    申请号：DE3266439

    申请日：1982-12-06

    Applicant: BASF AG

    Inventor： TRAUTMANN WALTER DR ,  VOGEL FRIEDRICH DR

    IPC: C07D233/32

    Abstract: A process for the preparation of 1,3-disubstituted 4,5-cis-dicarboxy-2-imidazolidones useful as intermediates in the preparation of Vitamin H (biotin), said intermediates have the general formula in which R is an aliphatic hydrocarbon radical having 1 to 8 carbon atoms, an aralkyl radical or an aromatic hydrocarbon radical, preferably an allyl radical or a benzyl radical, comprising reacting a defined diaminosuccinic acid with phosgene in the presence of an alkali metal hydroxide.

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