Method for the preparation of carbonates by a continuous process

申请公布号：US6034262(A)

申请号：US19980218651

申请日期：1998.12.22

申请公布日期：2000.03.07

申请人：

GENERAL ELECTRIC COMPANY

发明人：MORENO, PHILLIP

分类号：C07B61/00;C07C68/00;C07C69/96;(IPC1-7):C07C68/00

主分类号：C07B61/00

摘要：A continuous flow process for converting hydroxyaromatic compounds to diaryl carbonates by reaction with oxygen and carbon monoxide in the presence of a catalyst system typically comprising a group VIIIB metal or compound thereof, an inorganic co-catalyst, an organic co-catalyst and a hexaalkylguanidinium bromide or chloride, preferably bromide, wherein at least two components of the catalyst system, preferably lead oxide and hexaalkylguanidinium bromide, are introduced separately into the reactor.

(B1) ;LUBRICATION SYSTEM FOR BEARINGS OF BEVEL GEAR HIGH-SPEED SHAFT

(B1) ;PROCESS FOR PREPARING NOVEL PEPTIDES OF MORPHINE-LIKE ACTIVITY

MONOESTERE OG DIESTERE AV N-ALKYL-SUBSTITUERT AMINOMETHYLFOSFONSYRE, FREMGANGSMAATE VED DERES FREMSTILLING OG HERBICIDE PREPARATER INNEHOLDENDE SAMME

ANALOGIFREMGANGSMAATE VED FREMSTILLING AV TERAPEUTISK AKTIVE, FLUORERTE AMINOSYRER

FREMGANGSMAATE VED FREMSTILLING AV TERMISK STABILE AMMONIUMNITRATHOLDIGE GRANULATER OG GRANULATER FREMSTILT VED FREMGANGSMAATEN

FREMGANGSMAATE OG SYSTEM FOR OMSETNING AV OSON MED MASSE, SLIK SOM TREMASSE.

ELEKTROLYSECELLE.

FREMGANGSMAADE TIL FREMSTILLING AF CEPHALOSPORINSULFOXYDFORBINDELSER

BRIKETPRESSE

FLERTRINS TOERREANLAEG FOR KORNFORMET MATERIALE MED KANALFORMET UDLOEB

FREMGANGSMAADE TIL FREMSTILLING AF CITRONSYRE

METHOD AND APPARATUS FOR PIPE INSPECTION.

OPTICAL BICHROMATIC POSITION FINDER.