Part-I - Controller General of Patents Designs and Trademarks

(12) PATENT APPLICATION PUBLICATION (21) Application No.1099/CHE/2012 A
(19) INDIA
(22) Date of filing of Application :23/03/2012 (43) Publication Date : 21/06/2013
(54) Title of the invention : METHOD FOR PRODUCING OXIME
(51) International classification :C07C (71)Name of Applicant :
(31) Priority Document No
:2011- 1)SUMITOMO CHEMICAL COMPANY, LIMITED
069446 Address of Applicant :27-1, SHINKAWA 2-CHOME,
(32) Priority Date :28/03/2011 CHUO-KU, TOKYO 104-8260 Japan
(33) Name of priority country :Japan (72)Name of Inventor :
(86) International Application No
Filing Date
:NA
:NA
1)TSUJIUCHI, SHO
2)FUKAO, MASAMI
(87) International Publication No : NA
(61) Patent of Addition to Application Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(57) Abstract :
There is provided a method for producing an oxime compound, which is characterized by the steps of (a) oxidizing cumene to
produce cumene hydroperoxide, (b) subjecting the cumene hydroperoxide to an ammoximation reaction with ammonia and a
ketone in the presence of a catalyst to produce a reaction mixture containing an oxime compound corresponding to the ketone and
2-phenyl2-propanol, (c) separating a fraction of 2-phenyl-2-propanol and the oxime compound corresponding to the ketone from
the reaction mixture resulting in the step (b), (d) converting 2-phneyl-2-propanol in the fraction to cumene, and (e) recycling at
least a portion of the cumene resulting in step(d) to step (a).
No. of Pages : 18 No. of Claims : 8
The Patent Office Journal 21/06/2013 13724