To provide a method for economically and advantageously producing a stable copolymer of 1,3,5-trioxane according to a continuous method.
This method is a continuous method for producing a polyacetal copolymer from 1,3,5-trioxane and a comonomer known for the purpose using a strong protonic acid as an initiator. In the method, the initiator is added in an amount of 0.01-0.6 ppm based on the total amount of the monomers in a finely divided form to a monomer mixture. A crude polymer is then transferred from a polymerization reactor 1 to a mixing unit 6 without a further intermediate step after the polymerization step and a vacuum is applied thereto in the mixing unit 6 or a part between the polymerization reactor 1 and the mixing unit 6 to thereby separate the excessive monomers from the crude polymer. Generally commonly used stabilizers, auxiliaries, fillers, reinforcing materials and/or colorants, as desired, are contained in the polymer in the mixing unit 6.
HOFFMOCKEL MICHAEL DR
MUECK KARL-FRIEDRICH
REUSCHEL GERHARD DR
VERMA SATYAJIT
YEARWOOD MICHAEL
