Method for increasing solid state polymerization rate of polyester polymers

United States of America Patent

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Mar 2, 2004
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Jul 24, 2003
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Apr 22, 2002
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Dec 21, 2001

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Abstract

This invention concerns a method for increasing the polymerization rate of polyester polymers in the solid state by adding a catalytic amount of zinc p-toluenesulfonate to a polyester polymer melt that is essentially free of antimony and germanium, before solid state polymerization.

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INVISTA NORTH AMERICA S.A.R.L.

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Inventor Name	Address	# of filed Patents	Total Citations
Parthasarathy, Anju	Glenmoore, PA	17	509

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Method for increasing solid state polymerization rate of polyester polymers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

10128784

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PATENT NO	6699545
APP PUB NO	20030139566A1
SERIAL NO	10128784
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
March 02, 2004	US,6699545,B2 US6699545B2	GRANTED PATENT AS SECOND PUBLICATION
July 24, 2003	US,20030139566,A1 US20030139566A1	FIRST PUBLISHED PATENT APPLICATION

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10128784

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