| PATENT ASSIGNEE'S COUNTRY | USA |
| UPDATE | 07.00 |
| PATENT ASSIGNEE | Air Products & Chemicals |
| PATENT CLAIMS |
Process for prepg triethylenediamine by passing an amine compd over a pentasil-type zeolite at elev T, the amine compd being an ethanolamine, ethyleneamine, piperazine, morpholine or mixt., the IMPROVEMENT - Using a pentasil-type zeolite in the H or NH4 form which has been treated with a surface passivating agent which is a Si-contg compd that at least partially & permanently deacti vates the external sites of the zeolite catalyst for acid cata lyzed reactions thereby improving the selectivity |
| PATENT PHOTOCOPY | Available on request |
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