continued from part 1 - Controller General of Patents, Designs, and ...

(12) PATENT APPLICATION PUBLICATION (21) Application No.6649/DELNP/2008 A
(19) INDIA
(22) Date of filing of Application :31/07/2008 (43) Publication Date : 24/10/2008
(54) Title of the invention : "ACRYLIC ACID PREPARATION METHOD"
(51) International classification :C07C 57/055 (71)Name of Applicant :
(31) Priority Document No :0601061
1)ARKEMA FRANCE
(32) Priority Date :07/02/2006
Address of Applicant :420, RUE D'ESTIENNE D' ORVES, F-
(33) Name of priority country :France
92700 COLOMBES, FRANCE. France
(86) International Application No :PCT/FR2007/050758 (72)Name of Inventor :
Filing Date
:06/02/2007
1)JEAN-LUC DUBOIS
(87) International Publication No :WO 2007/090991
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
(62) Divisional to Application Number :NA
Filing Date
:NA
(57) Abstract :
The invention relates to a method for preparing acrylic acid from propylcne, consisting of a first step comprising the oxidation of
propylene to acrolein and a second step comprising the oxidation of acrolein to acrylic acid, including a glycerol dehydration step
performed in the presence of a gas containing proplyene and, more specifically, in the presence of the reaction gas originating from
the propylene to acrolein oxidation step. The inventive method enables the use, in part, of a renewable raw material, while increasing
acrylic acid production.
No. of Pages : 24 No. of Claims : 7
The Patent Office Journal 24/10/2008 26112