Process for regenerating ionic compound

Patent metadata

Field	Value
Publication number	US-9561499-B2
Application number	US-201414783536-A
Country	US
Kind code	B2
Filing date	Apr 21, 2014
Priority date	Apr 19, 2013
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

The present disclosure provides a process for regenerating the deactivated ionic compound. The process involves mixing a deactivated ionic compound with at least one solvent such as ethyl acetate and neutralizing with at least one base such as triethylamine and tert-butyl amine to obtain a precipitate. The obtained precipitate is filtered to obtain a residue which is then washed with a solvent such as dichloromethane to obtain the ionic compound.

First claim

The invention claimed is:

1. A process for regenerating an ionic compound selected from the group consisting of ionic compound of Formula A and ionic compound of Formula B from an adduct of ionic compound of Formula A or B, conjunct polymers and at least one metal chloride,

wherein R 1 and R 2 are independently alkyl group and X is a halogen;
said process comprising the following steps:
a) adding ethyl acetate to said adduct to dissolve the conjunct polymers in ethyl acetate and incorporating at least a base to form a solid complex of the ionic compound of Formula A or B, the metal chloride and the base;
b) filtering said complex to separate a complex residue and ethyl acetate containing conjunct polymers; and
c) washing at least once said complex residue with dichlorormethane to obtain the ionic compound of formula A or B and an adduct of metal chloride and the base.

2. The process as claimed in claim 1 , wherein R 1 and R 2 are independently selected from the group consisting of methyl, ethyl, propyl and butyl.

3. The process as claimed in claim 1 , wherein the halogen is selected from the group consisting of bromine and chlorine.

4. The process as claimed in claim 1 , wherein the metal chloride is aluminium trichloride.

5. The process as claimed in claim 1 , wherein base is selected from the group consisting of triethylamine, tert-butyl amine, sodium carbonate, sodium bicarbonate, potassium carbonate, potassium bicarbonate, ammonium carbonate and combinations.

6. The process as claimed in claim 1 , wherein the step (a) is carried out at a temperature ranging from 20° C. to 50° C.

7. The process as claimed in claim 1 , include steps of recovering and recycling of ethyl acetate and dichloromethane.

8. The process as claimed in claim 1 , wherein the step (a) includes adjusting the pH value in the range of 7 to 7.5.

9. The process as claimed in claim 1 , wherein the recovery of the ionic compound ranges from 60 to 99%.

Assignees

• Reliance Ind Ltd

Inventors

• Aduri Pavankumar
• Uppara Parasu Veera
• Kotra Viswanath
• Sakhalkar Mangesh
• Dukhande Vibhuti
• Raje Vivek Prabhakar

Classifications

• C07D213/06

  containing only hydrogen and carbon atoms in addition to the ring nitrogen atom · CPC title

• B01J31/0284 Primary

  of an aromatic ring, e.g. pyridinium · CPC title

• Y02P20/584

  Recycling of catalysts · CPC title

• B01J2231/323

  Hydrometalation, e.g. bor-, alumin-, silyl-, zirconation or analoguous reactions like carbometalation, hydrocarbation · CPC title

• C07D233/58

  with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, attached to ring nitrogen atoms · CPC title