Process for the preparation of acetal polymers

United States of America Patent

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Apr 4, 2006
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Mar 17, 2005
app pub date
Sep 10, 2004
filing date
Sep 12, 2003

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Expired

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Abstract

The present invention relates to a process for the preparation of acetal polymers, in particular of polyoxymethylene (POM) by cationic polymerization where organophosphonic and/or organophosphinic acids and/or their derivatives and/or their precursors are used as the initiator.

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TICONA GMBH	AN DER B 43 65451 KELSTERBACH

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

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Inventor Name	Address	# of filed Patents	Total Citations
Haubs, Michael	Bad Kreuznach, DE	68	482
Penczek, Stanislaw	Lodz, PL	1	1

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Process for the preparation of acetal polymers

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United States of America Patent

10939136

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PATENT NO	7022805
APP PUB NO	20050059797A1
SERIAL NO	10939136
DOCKET NO

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

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
April 04, 2006	US,7022805,B2 US7022805B2	GRANTED PATENT AS SECOND PUBLICATION
March 17, 2005	US,20050059797,A1 US20050059797A1	FIRST PUBLISHED PATENT APPLICATION

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10939136

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