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    • 12. 发明授权
    • Polymer extraction methods
    • 聚合物提取方法
    • US07981642B2
    • 2011-07-19
    • US12760972
    • 2010-04-15
    • Johan van WalsemLuhua ZhongSimon S. Shih
    • Johan van WalsemLuhua ZhongSimon S. Shih
    • C12P7/62B01D11/02B01D21/00C12Q1/68
    • C08G63/89C08G63/06
    • A method of separating a polymer from a biomass containing the polymer, includes contacting the biomass with a solvent system, the solvent system including a solvent for the polymer and a precipitant for the polymer, to provide a residual biomass and a solution that includes the polymer, the solvent for the polymer and the precipitant for the polymer; and applying a centrifugal force to the solution and residual biomass to separate at least some of the solution from the residual biomass; where, the polymer is a polyhydroxyalkanoate; the precipitant comprises at least one alkane; the solvent for the polymer is selected from the group consisting of ketones, esters and alcohols and combinations thereof; and the biomass comprises a slurry of the biomass and water.
    • 从含有聚合物的生物质中分离聚合物的方法包括使生物质与溶剂体系接触,所述溶剂系统包括用于聚合物的溶剂和聚合物的沉淀剂,以提供残留生物质和包含聚合物的溶液 ,聚合物的溶剂和聚合物的沉淀剂; 以及将离心力施加到溶液和残余生物质以将至少一些溶液与剩余生物质分离; 其中聚合物是聚羟基链烷酸酯; 沉淀剂包含至少一种烷烃; 聚合物的溶剂选自酮,酯和醇及其组合; 生物质包括生物质和水的浆液。