METHOD FOR PRODUCING POLYOXYMETHYLENE POLYOXYALKYLENE COPOLYMERS
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United States of America Patent
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Dec 22, 2022
app pub date -
Dec 14, 2020
filing date -
Dec 14, 2020
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Abstract
A method for producing a polyoxymethylene polyoxyalkylene copolymer, comprising reacting a polymer formaldehyde compound with an alkylene oxide in the presence of a double metal cyanide (DMC) catalyst, wherein the polymer formaldehyde compound comprises at least one terminal hydroxyl group and wherein the method comprises the steps of placing a suspending agent in a reactor and subsequently incrementally or continuously metering in the polymer formaldehyde compound into the reactor during the reaction is provided.
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