Method for recycling amine catalyst in interfacial polycarbonate manufacturing process

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Aug 14, 2012
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Sep 15, 2011
app pub date
Nov 16, 2009
filing date
Nov 24, 2008

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Expired

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Abstract

The present invention relates to an improved process for recycling a coupling catalyst, preferably an amine catalyst in an interfacial polycarbonate manufacturing process. Specifically, the amine catalyst is recycled in an acidic wash water solution.

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TRINSEO EUROPE GMBH	GWATTSTRASSE 15 PFAEFFIKON 8808

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C08G:MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN B....

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Inventor Name	Address	# of filed Patents	Total Citations
Jueptner, Guenter A	Hammah, DE	7	146

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Method for recycling amine catalyst in interfacial polycarbonate manufacturing process

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United States of America Patent

13130010

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PATENT NO	8242231
APP PUB NO	20110224389A1
SERIAL NO	13130010
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity Expired	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 14, 2012	US,8242231,B2 US8242231B2	GRANTED PATENT AS SECOND PUBLICATION
September 15, 2011	US,20110224389,A1 US20110224389A1	FIRST PUBLISHED PATENT APPLICATION

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