LG Chem Ltd., a company involved in business activities in chemicals sector, has been recently granted a patent for invention titled “CATALYST COMPOSITION FOR HYDROFORMYLATION REACTION AND A HYDROFORMYLATION PROCESS USING THE SAME”.
The patent has been issued as granted patent number 306185 filed as application number 5388/DELNP/2012 having scope (abstract) of invention as:
“The present invention relates to a catalyst composition for hydroformylation reaction and a hydroformylation process using the same. In the hydrofomylation process using the catalyst composition according to the present invention increased catalytic stability and high catalytic activity can be obtained and the selectivity of iso aldehyde produced can be desirably controlled.”
The primary independent claim (claim 1) of this patent states:
“A catalyst composition for hydroformylation reaction, comprising: (a) a mondentate phosphine ligand represented by the following Formula 1; and (b) a transition metal catalyst: <Formula 1> R3 wherein R R2 and R3 are each independently alkyl group having 1 to 3 carbon atoms; or alkoxyl group having 1 to 5 carbon atoms. The catalyst composition as set forth in claim 1, wherein the transition metal catalyst (b) is represented by the following Formula 2: <Formula 2> M( )x( )y( )z wherein M is any one selected from cobalt (Co), rhodium (Rh) and iridium (Ir), L , L2 and L3are each independently any one selected from the group consisting of hydrogen, CO, cyclooctadiene, norbornene, chlorine, triphenylphosphine and acetylacetonato, x, y and z are each independently 0 to 5, x, y and z are not 0 at the same time. The catalyst composition as set forth in claim 1, wherein the mondentate phosphine ligand is one or more selected from the group consisting of tri-p-tolylphosphine (TPTP), tri-p-ethylphenylphosphine (TPEtPP), tris-p-metoxyphenyl phosphine (TMPP) and trip-isopropoxyphenyl phosphine (TIPPP). The catalyst composition as set forth in claim 1, wherein the mondentate phosphine ligand is one or more selected from the group consisting of tri-p-tollylphosphine (TPTP) represented by the following Formula 4, and tris-p-methoxyphenyl phosphine (TMPP) represented by the following Formula 5: <Formula 4> PCT/KR2011/005173 <Formula 5> OMe.”
The patent has been granted under International Patent Classification (IPC) B01J 31/24, C07C 45/50, C07C 47/02, which covers inventions related to:
B01J 31/24 – Catalysts comprising phosphines
C07C 45/50 – Preparation of compounds having llinktC=O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by oxo-reactions
C07C 47/02 – Saturated compounds having —CHO groups bound to acyclic carbon atoms or to hydrogen
This patent can be opposed under post-grant patent opposition within 12 months of the date of grant of this patent.
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