发明名称 Process for the production of melt polycarbonate compositions
摘要 <p>In an embodiment, a process for making a polycarbonate composition by a melt polymerization process can comprise: melt polymerizing reactants to produce a molten reaction product; filtering the molten reaction product prior to any extruding; and extruding the molten reaction product to form the polycarbonate composition. In another embodiment, a melt polymerization process can comprise: melt polymerizing a dihydroxy reactant and a carbonate compound in the presence of a catalyst to produce a molten reaction product; and upstream of all extruders, removing gels having a particle size of greater than or equal to 0.5 micrometers from the molten reaction product; and extruding to produce the polycarbonate composition. A melt polymerization unit can comprise: a polymerization vessel for melt polymerizing a dihydroxy reactant and a carbonate compound to produce a molten reaction product, a melt filter, and an extruder. The melt filter is located upstream from the extruder.</p>
申请公布号 EP2703424(A1) 申请公布日期 2014.03.05
申请号 EP20120382334 申请日期 2012.08.29
申请人 SABIC INNOVATIVE PLASTICS IP B.V. 发明人 VIC FERNANDEZ, IGNACIO
分类号 C08G64/30 主分类号 C08G64/30
代理机构 代理人
主权项
地址