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    2.
    发明专利
    未知

    公开(公告)号：DE4405055A1

    公开(公告)日：1995-08-24

    申请号：DE4405055

    申请日：1994-02-17

    Applicant: BASF AG

    Inventor： BRANDT PETER DR ,  BRUCHMANN BERND DR ,  LAQUA GERHARD DR ,  MERGER FRANZ DR ,  OTTERBACH ANDREAS DR ,  STIEFENHOEFER KONRAD ,  WITZEL TOM DR ,  WOLFF STEFAN DR ,  BECKER RAINER DR

    IPC: B01J20060101 ,  B01J31/02 ,  C07B61/00 ,  C07D20060101 ,  C07D251/34 ,  C08G20060101 ,  C08G18/02 ,  C08G18/18 ,  C08G18/79 ,  C09D20060101 ,  C07D211/44 ,  C07D295/03 ,  C07D487/08 ,  C09D175/04 ,  B01J27/232 ,  B01J27/236 ,  B01J27/24

    Abstract: The prodn. of isocyanurate gp.-contg. polyisocyanates (A) comprises partial trimerisation of (cyclo)aliphatic di-isocyanates (B) in the presence of tetra-alkylammonium alkyl carbonates of formula (I) and/or quat. ammonio-alkyl carbonate betaines of formula (II) as catalyst(s), followed by deactivation of the catalyst on reaching the required deg. of trimerisation. In formulae, R , R , R = 1-20 C alkyl, 5-6C cycloalkyl, 7-10C aralkyl or Ph; or R + R can form a 5- or 6-membered cycloalkyl gp., or R + R + N can form a 5- or 6-membered ring with another N or O as bridging gp. or R + R + R + N can form a multi-membered ring with one or more extra N and/or O bridges; R = 1-4C alkyl; R = 2-20 C alkylene, 5-6C cycloalkylene, 7-10C aralkylene or phenylene; or R + R = alkylene gp. which forms a 5- to 7-membered ring with a N bridge. Pref. trimerisation catalysts are carbonates of formula (III), (IV), or (V), or betaine carbonates of formula (V), (VII) or (VIII). Trimerisation is carried out at 30-150 degrees C and the catalyst is deactivated with dibutyl phosphate (DBP); unreacted monomeric di-isocyanate is then removed. Pref. di-isocyanates are (cyclo)aliphatic di-isocyanates obtd. by a phosgene-free process, esp. by thermal cleavage of (cyclo)aliphatic dicarbamate esters; esp. pref. di-isocyanates obtd. by this method are 1,6-hexamethylenedi-isocyanate (HDI), 2-butyl-2-ethyl-pentamethylene-1,5-di-isocyanate and 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethylcyclohexane (IPDI).

    10.
    发明专利
    未知

    公开(公告)号：DE4407487A1

    公开(公告)日：1995-09-14

    申请号：DE4407487

    申请日：1994-03-07

    Applicant: BASF AG

    Inventor： MUNDINGER KLAUS DR ,  LAQUA GERHARD DR ,  WITZEL TOM DR ,  MERGER FRANZ DR

    IPC: C07C253/10 ,  C07C255/46 ,  C07C253/00 ,  C07B43/08

    Abstract: The novel feature in the prepn. of 3-cyano-3,5,5-trimethylcyclohexanone (I) by quat. ammonium-catalysed reaction of isophorone with HCN at 80-100 deg.C/0.5-20 bar is that the ammonium catalyst is a salt of formula (II). R -R = 1-8C alkyl, 5-8C cycloalkyl, aryl, 7-18C aralkyl or 2-18C hydroxyalkyl; and X = HCO3 or -OC(O)OR , with the proviso that R = 1-8C alkyl when X = -OC(O)OR .

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