公开(公告)号：US20220064370A1

公开(公告)日：2022-03-03

申请号：US17418332

申请日：2020-02-18

申请人： Reinhard KOCH

发明人： Reinhard KOCH ,  Dirk BERTHEL ,  Joachim MÜLLER

IPC分类号： C08G63/08 ,  C08G63/78 ,  B29C48/00 ,  B29C48/44 ,  B29C48/92

摘要： A method and a facility produce polylactide (PLA) by polymerization, in which a lactide mixture is mixed with at least one catalyst, is introduced into a modular planetary roller extruder and the finished PLA is then removed. The lactide mixture continuously passes through segments of the extruder. The course of the reaction is measured and controlled in the segments in a targeted manner such that the temperature can be set by heating and/or cooling. The pressure can be variably set depending on pressure values to be checked by a controllable gas extraction and/or a controllable extruder speed and/or static variability of the planetary rollers and/or a variable metering speed of the lactide mixture and/or a variable mixing ratio of the lactide mixture. Flammable gas is removed in an explosion-protected zone in a partial region of the extruder. Additives are introduced into the extruder during the rolling process.