Process for the production of polyoxymethylene block copolymers

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United States of America Patent

PATENT NO 10759902
APP PUB NO 20180371159A1
SERIAL NO

16120566

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Abstract

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The invention relates to a process for producing polyoxymethylene block copolymers, comprising the step of activating the DMC catalyst in the presence of an OH-terminated polymeric formaldehyde starter compound by means of a defined amount of alkylene oxide, optionally followed by polymerization with alkylene oxides, if necessary in the presence of other comonomers. The invention further relates to polyoxymethylene block copolymers that can be obtained by means of such a process and to the use of these for producing polyurethane polymers.

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Patent Owner(s)

Patent OwnerAddress
COVESTRO DEUTSCHLAND AG51373 LEVERKUSEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Gürtler, Christoph Cologne, DE 68 288
Hofmann, Jörg Krefeld, DE 59 366
Langanke, Jens Mechernich, DE 22 6
Peckermann, Ilja Cologne, DE 6 21
Wolf, Aurel Wülfrath, DE 110 437

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