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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) APPLICATION No:
1668/MAS/1997A
(22) Date of filing of Application:25/07/1997(43) Publication Date: 09/06/2006
(54) Title of the invention:
A PROCESS FOR PREPARING 6-
AMINOCAPRONITRILE OR 6-
AMINOCAPRAONITBILE/HEXAMET
HYLENEDIAMINE
MIXTURES
(51)International classification:C 07 C
253/30
(31) Priority Document No.196 31 521.2
(32) Priority Date:03/08/1996
(33) Name of priority country:
GERMANY
(87) WIPO No. :
(61) Patent of addition to
Application No. :
Filed on:
(62) Divisional to
Applcation No.:
Filed on:
(71) Name of Applicant
BASF AKTIENGESELLSCHAFT
Address of Applicant:
67056 LUDWIGSHAFEN, FEDERAL
REPUBLIC OF GERMANY.
(72) Name of the Inventor(s):
ROCCO PACIELLO,
MICHAEL ROPER
WERNER SCHNURR,
(57)Abstract
. A process for preparing 6-aminocapronitrile or 6- aminocapronitrile/hexarnethylenediamine mixtures, which
comprises
a) reacting at least one pentenenitrile selected from the group consisting of 2- pentenenitrile, 3-pentenenitrile and 4pentenenitrile
with carbon monoxide and hydrogen in the presence of a catalyst containing at least one element of
subgroup eight as active component to obtain a hydroformylation effluent I,
b) optionally removing carbon monoxide, hydrogen and the catalyst from the hydroformylation effluent I to obtain a
hydroformylation effluent II,
c) removing 5-formylvaleronitrile from said hydroformylation effluent lor II,
d) reacting the removed 5-formylvaleronitrile with ammonia and hydrogen in the presence of a hydrogenation catalyst
selected from the group consisting of rhenium, copper and compounds thereof, and also metals and metal compounds
of subgroup eight to obtain a hydrogenation effluent, and
e) isolating 6-arninocapronitrile with or without hexarnethylenediamine from the hydrogenation effluent.
2. The process as claimed in claim 1, wherein excess ammonia, hydrogen and optionally the hydrogenation catalyst
are removed prior to the isolation of 6- arninocapronitrile with or without hexarnethylenediarnine in step e).
The Patent Office Journal 09/06/2006 10830