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US Patent 7714173 Method for purifying terephthalaldehyde

Patent 7714173 was granted and assigned to LG Chem on May, 2010 by the United States Patent and Trademark Office.

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Patent abstract

The present invention relates to a method for preparing high-purity terephthalaldehyde which comprises re-crystallizing terephthalaldehyde crystals containing impurities, using an anti-solvent. Specifically, the present invention relates to a method for preparing terephthalaldehyde which comprises dissolving low-purity terephthalaldehyde prepared by a conventional method in dimethylsulfoxide and then re-crystallizing the solution, using water as an anti-solvent. The present invention is not only environment-friendly because it uses water only as an anti-solvent, but also economical because it may simply prepare high-purity terephthalaldehyde in a short time.

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Patent Inventor Names

In-Kyu Park0

Jong-Hyun Chae0

Jong-Suh Park0

Seong-Hoon Kang0

Young-Dae Kim0

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US Patent 07714173 Method for purifying terephthalaldehyde US Patent 7714173 Method for purifying terephthalaldehyde

Infobox

Patent Number

077141730

Patent Number

77141730

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=077141730

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Is a

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Current Assignee

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Patent Jurisdiction

United States Patent and Trademark Office

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Patent Number

077141730

Date of Patent

May 11, 2010

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Patent Application Number

123087140

Date Filed

June 14, 2007

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=077141730

Patent Primary Examiner

Sikarl A. Witherspoon

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"Entity importer update"

edited on 18 Jun, 2022

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Infobox (+1 properties)

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Website URL

https://pdfpiw.uspto.gov/.piw?Docid=07714173

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created this topic on 4 Dec, 2021

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Infobox (+8 properties)

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US Patent 07714173 Method for purifying terephthalaldehyde

Infobox

Is a

Current assignee

Patent jurisdiction

United States Patent and Trademark Office

Patent number

07714173

Date of patent

May 11, 2010

Patent application number

12308714

Date Filed

June 14, 2007

Patent primary examiner

Sikarl A. Witherspoon

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