发明名称 |
PROCESS FOR PREPARING A BIO-RESORBABLE POLYESTER IN PARTICULATE FORM |
摘要 |
The invention refers to process for preparing a bio-resorbable polyester in particulate form, comprising the steps: a) providing a bio-resorbable polyester with in the form of a dry polymer mass or in the form of a wet polymer mass; b) feeding the polymer mass from step a) into an extruder extruder with at least one degassing zone where the polymer mass is molten, extruded and degassed; c) discharging the degassed polymer mass out of the extruder; d) comminuting the discharged polymer mass to particles with - a bulk density of 0.3 g/ml or more, - a tapped density of 0.4 g/ml or more and - a specific surface area of 2.0 m2/g or less. |
申请公布号 |
WO2016075071(A1) |
申请公布日期 |
2016.05.19 |
申请号 |
WO2015EP76040 |
申请日期 |
2015.11.09 |
申请人 |
EVONIK RÖHM GMBH;BÄR, HANS;BRUNNENGRÄBER, CHRISTIAN |
发明人 |
BÄR, HANS;BRUNNENGRÄBER, CHRISTIAN |
分类号 |
C08G63/88;C08J3/12 |
主分类号 |
C08G63/88 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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