Process for the continuous preparation of polyethylene terephthalate by high molecular weight polycondensation in the solid phase of dry granules of polyethylene terephthalate

摘要

Process for the continuous production of high molecular weight polyethylene terephthalate.A Dry granular polientilentereftalato is subjected, in some units (10,11) transfer bases and forced Movement, a process of Crystallization temperature between 180 and 220 C in an Inert Gas Atmosphere, Introducing the Granules already CRYSTALLIZED continuously rea R (R) and fixed bed policondensado in contact with an Inert Gas between 210 and 235 C.Where the polycondensation, avoiding the Compaction of granular, Passing the policondensado a cooler with agitcion (13). Application as a product for manufacture of containers of Food and drinks for human consumption.