首页>
外国专利>
A process for making a composition comprising a monovinylaromatic polymer and a polymer made from renewable resources.
A process for making a composition comprising a monovinylaromatic polymer and a polymer made from renewable resources.
展开▼
机译:制备包含单乙烯基芳族聚合物和由可再生资源制成的聚合物的组合物的方法。
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention is a process to make a composition comprising at least a monovinylaromatic polymer and at least a dispersed phase of one or more polymers made from renewable resources comprising : a) forming a polymerizable mixture comprising : at least a monomer or a dimer (a1) selected among an hydroxy carboxylic acid, a precursor of said hydroxy carboxylic acid, a cyclic component polymerizable by ring-opening polymerization (ROP) and a mixture of an epoxide and carbon dioxide, dispersed in at least (a2) one monovinylaromatic monomer, optionally a rubber dissolved in (a2) the monovinylaromatic monomer, b) contacting an appropriate catalyst with the polymerizable solution at conditions effective to produce a polymer A1 comprising the repeating units (a1) dispersed in the (a2) monovinylaromatic monomer, c) polymerizing through a radical pathway the solution obtained at step b) optionally in the presence of a free radical initiator, optionally in the presence of chain transfer agents, d) degassing the product of step c) to separate the optional unpolymerized monomers and comonomers and recovering a composition comprising at least a (A2) monovinylaromatic polymer and at least (A1) wherein, the weight proportion A1/(A2+A1) is up to 50%. In a second embodiment steps b) and c) are made in one step. The polymerizable mixture is contacted with an appropriate catalyst at conditions effective to essentially simultaneously produce a polymer A1 and a monovinylaromatic polymer. (a1) is advantageously a lactide. The monovinylaromatic monomer is advantageously styrene.
展开▼