Bethany Steichen;James P. Oberhauser;Manish Gada;Yunbing Wang;Lothar W. Kleiner;Ni Ding;Thierry Glauser;Stephen D. Pacetti
发明人:
Bethany Steichen,Stephen D. Pacetti,Manish Gada,Thierry Glauser,Lothar W. Kleiner,Yunbing Wang,James P. Oberhauser,Ni Ding
申请号：
US13207656
公开号：
US20130041129A1
申请日:
2011.08.11
申请国别(地区):
US
年份:
2013
代理人:
摘要：
Methods and systems for controlling the moisture content of biodegradable and bioresorbable polymer resin during extrusion above a lower limit that allows for plasticization of the polymer resin melt and below an upper limit to reduce or prevent molecular weight loss are disclosed. Methods are further disclosed involving plasticization of a polymer resin for feeding into an extruder with carbon dioxide and freon.
