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Cleaning device for separating dilactide from mixtures, polymerisation device, method for separating dilactide from mixtures and use thereof
Cleaning device for separating dilactide from mixtures, polymerisation device, method for separating dilactide from mixtures and use thereof
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机译:用于从混合物中分离二丙交酯的清洁装置,聚合装置,从混合物中分离二丙交酯的方法及其用途
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摘要
The present invention relates to a device for separating a biodegradable, intermolecular cyclic diester of an alpha-hydroxycarboxylic acid from material mixtures which contain in addition the alpha-hydroxycarboxylic acid of the diester corresponding thereto. In particular, the diester is thereby dilactide and the acid lactic acid. Furthermore, the present invention relates to a method for separating dilactide from material mixtures, which is based on a modified, distillative method. In addition, the present invention describes a polymerization device, in particular for preparing polylactide. Likewise, purposes of use of both the devices and of the method are indicated.
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