56.
    发明专利
    未知

    公开(公告)号:DE502004010159D1

    公开(公告)日:2009-11-12

    申请号:DE502004010159

    申请日:2004-02-20

    Applicant: BASF SE

    Abstract: Production of polyisocyanates comprises mixing an amine with phosgene, reacting the amine with the phosgene in a tubular reactor, and passing the reactor effluent to a distillation column. Independent claims are also included for: (1) tubular reactor consisting of one or more horizontal and/or vertical segments connected together by sections whose diameter is smaller than that of the narrowest horizontal or vertical segment; (2) use of the above reactor for carrying out gas-liquid reactions; and (3) use of the above reactor for producing isocyanates by reacting primary amines with phosgene.

Patent Agency Ranking