Process for the preparation of polyacetal copolymers

Details Process for the preparation of polyacetal copolymers Process for the preparation of polyacetal copolymers

C - Chemistry, Metallurgy

08

G

C08G 2/10 (2006.01) C08G 2/00 (2006.01) C08G 2/06 (2006.01) C08G 2/24 (2006.01) C08G 4/00 (2006.01)

Patent

CA 2274377

A continuous process for the preparation of polyacetal copolymers from 1,3,5-trioxane and the comonomers known for this purpose using strong protonic acids as an initiator, in which the initiator is added in an amount of 0.01 to 0.6 ppm, based on the total amount of monomers, in finely divided form to the monomer mixture, after the polymerization step the crude polymer is transferred from the polymerization reactor to a mixing unit without further intermediate steps, excess monomer is removed from the crude polymer in the mixing unit or between polymerization reactor and mixing unit by applying reduced pressure and, if desired, generally customary stabilizers, assistants, fillers, reinforcing materials and/or colorants are incorporated into the polymer in the mixing unit.

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