METHOD FOR PRODUCING OXYMETHYLENE COPOLYMER
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United States of America Patent
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Aug 10, 2023
app pub date -
Apr 20, 2023
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Nov 7, 2016
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Abstract
A method for producing an oxymethylene copolymer, in which a copolymer starting material containing a trioxane and a comonomer is subjected to a polymerization reaction in the presence of a polymerization initiator that contains an acidic compound (A), and where: the copolymer starting material contains a basic compound (B); an acidic compound (C) that is different from the acidic compound (A) is added into the copolymer starting material before performing the polymerization reaction, thereby causing a reaction between the basic compound (B) and the acidic compound (C) in advance; and the polymerization reaction is carried out by means of melt polymerization.
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