Polyoxymethylene copolymer and process for producing the...

C - Chemistry – Metallurgy – 08 – G

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C08G 2/18 (2006.01) C08K 3/26 (2006.01) C08L 59/04 (2006.01)

Patent

CA 2070431

A polyoxymethylene copolymer excellent in stability and mechanical properties which is comprised of oxymethylene units and oxyalkylene units and has a molecular weight of 10,000 to 200,000. The proportion of oxyalkylene units to oxymethylene units is 0.07 to 0.5% by mole and the ratio of the absorbance of terminal formate groups to that of methylene groups determined by infrared spectrophotometry is not more than 0.025. A process for producing the copolymer is also disclosed.

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