Process for the manufacture of copolymers of ethylene and acrylic-acid esters in a two-zone reactor at a pressure of at least 500 bar

Abstract

Abstract 1. A process for the preparation of copolymers of ethylene with acrylic acid esters in a continuous-flow tubular polymerization system at pressures of from 500 to 5 000 bars and temperatures of from 50 to 450 degrees C in the presence of polymerization initiators which decompose into free radicals, a mixture of ethylene, acrylic acid ester, initiator and optional regulator being fed into the polymerization system at its inlet and simultaneously at a second point downstream of the inlet, where the reaction temperature has exceeded a maximum, wherein 55 to 75% and 25 to 45% of the amount of acrylic acid ester are metered in at the inlet and the second feed point respectively, and the maximum temperature downstream of the second feed point is 20 to 50 degrees C lower than the maximum temperature upstream of the second feed point.

Inventors

• 👤 Michael Dr. Werner
• 👤 Dieter Dr. Oeder
• 👤 Franz Dr. Brandstetter
• 👤 Hans Dr. Gropper
• 👤 Frank Dr. Weiss

Bibliographic Details