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Catalyst For Direct Conversion Of Esters Of Lactic Acid To Lactide And The Method For Producing Lactide Using The Same
Catalyst For Direct Conversion Of Esters Of Lactic Acid To Lactide And The Method For Producing Lactide Using The Same
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机译:乳酸酯直接转化为丙交酯的催化剂及其制备丙交酯的方法
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摘要
The present disclosure discloses a catalyst for directly producing a lactide which is a cyclic ester used as a monomer for polylactides, and a method for directly producing a lactide using the catalyst, the method including the transesterification reaction between two molecules of an ester of lactic acid or a mixture containing the ester of lactic acid with a small amount of lactic acid and oligomer of lactic acid under an inert environment in the presence of a titanium-based catalyst or a catalyst mixture containing the titanium-based catalyst so as to produce lactide while simultaneously removing an alcohol (ROH) generated as a by-product. As compared to a conventional commercialized process, since the method for producing a lactide in accordance with the present disclosure is a novel process capable of directly producing the lactide from the ester of lactic acid, energy consumption is low and the lactide can be produced through a simple process showing a high yield while maintaining optical property (D-form or L-form optical isomer).
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