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US 2016/0107972 A1Published application
Ionic liquid composition
AssigneeReliance Industries Limited
InventorsSuresh Shantilal JAIN, Pavankumar ADURI, Uday RATNAPARKHI, Parasu Veera UPPARA
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Abstract
The present disclosure provides a composition for preparing aryl carboxylic acid; said composition comprising: at least one ionic liquid, at least one catalyst, at least one non-oxidizable polar solvent, and at least one oxidizable multi-alkylated arylene compound with no two successive ring positions bearing alkyl group. The present disclosure also provides a process for preparing aryl carboxylic acid.
Claims16
A composition for preparing aryl carboxylic acid;
- said composition comprising:
- i. at least one ionic liquid of formula I, in an amount of 0.05 to 50% of the total mass of the composition;
- [Ar—Z-Q{circle around (+)}-R]A{circle around (−)} Formula I
- wherein,
- Ar is substituted or un-substituted aryl group,
- Z is (CH2)n, wherein n is an integer from 0 to 10,
- Q+ is an organic cation selected from the group consisting of quaternary ammonium, cholinium, sulfonium, phosphonium, guanidinium, imidazolium, pyridinium, pyrrolidinium, morpholinium, quinolinium, isoquinolium, pyrazolium and piperidinium;
- R is C1 to C20 linear or branched alkyl group or Ar—Z,
- A− is an anion selected from the group consisting of chlorides, bromides, fluorides, iodides, mesylates, tosylates, sulfates, alkyl sulfonates, phosphates, phosphonates, akyl phosphates, nitrates, nitrites, carbonates, acetates, bicarbonates, hydroxides and oxides;
- ii. at least one catalyst, in an amount of 0.01 to 5% of the total mass of the composition;
- iii. at least one non-oxidizable polar solvent;
- and
- iv. at least one oxidizable multi-alkylated arylene compound with no two successive ring positions bearing alkyl group,
- said composition when used in the preparation of aryl carboxylic acid results in the formation of less than 4000 ppm of partially oxidized derivatives of said multi-alkylated arylene compound;
- said derivatives comprising at least one carboxylic acid moiety and at least one aldehyde moiety.
12 more elements
A process for obtaining aryl carboxylic acid;
- said process comprising the following steps:
- preparing a composition comprising:
- i. at least one ionic liquid of formula I, in an amount of 0.05 to 50% of the total mass of the composition;
- [Ar—Z-Q{circle around (+)}-R]A{circle around (−)} Formula I
- wherein,
- Ar is substituted or un-substituted aryl group,
- Z is (CH2)n, wherein n is an integer from 0 to 10,
- Q+ is an organic cation selected from the group consisting of quaternary ammonium, cholinium, sulfonium, phosphonium, guanidinium, imidazolium, pyridinium, pyrrolidinium, morpholinium, quinolinium, isoquinolium, pyrazolium and piperidinium;
- R is C1 to C20 linear or branched alkyl group or Ar—Z,
- A− is an anion selected from the group consisting of chlorides, bromides, fluorides, iodides, mesylates, tosylates, sulfates, alkyl sulfonatses, phosphates, phosphonates, akyl phosphates, nitrates, nitrites, carbonates, acetates, bicarbonates, hydroxides and oxides;
- ii. at least one catalyst, in an amount of 0.01 to 5% of the total mass of the composition;
- iii. at least one non-oxidizable polar solvent;
- and
- iv. at least one oxidizable multi-alkylated arylene compound with no two successive ring positions bearing alkyl group, and
- subjecting said composition to oxidation in the presence of an oxidizing agent selected from the group consisting of air and oxygen at a temperature of 100 to 250° C. and at a pressure of 10 to 60 bar to obtain aryl carboxylic acid,
- said process resulting in the formation of less than 4000 ppm of partially oxidized derivatives of said multi-alkylated arylene compound;
- said derivatives comprising at least one carboxylic acid moiety and at least one aldehyde moiety.
14 more elements
Dependencies are inferred from the claim text.