PROCEDURE FOR THE CONTINUOUS MANUFACTURE OF THERMOPLASTIC PROCESSABLE POLYURETHANES WITH IMPROVED PROCESSING BEHAVIOR.

摘要

THE PRESENT INVENTION IS ABOUT A PROCEDURE FOR THE CONTINUOUS PRODUCTION OF SOME THERMOPLASTIC ELABORABLE POLYURETHANES, WHICH SHOW A BETTER PRODUCTION CAPACITY, HAVING TO TAKE PLACE A TRANSFORMATION IN SEVERAL PHASES WITH MULTIPLE POLYOLES A) FROM 500 TO 5000, THEY ARE CONTINUOUSLY MIXED IN A MIXING EQUIPMENT WITH A HIGH SHEARING ENERGY WITH A PART OF A DIISOCYANATE B) ORGANIC IN A NCO: OH RATIO OF 2.0: 1 TO 5.0: 1, B) THE MIXTURE PRODUCED IN PHASE A) IS CONTINUOUSLY TRANSFORMED INTO A REACTOR, AT A TEMPERATURE 120 (DEGREES) C, UP TO REACHING A QUANTITY 90% REFERRED TO THE TOTAL QUANTITY OF COMPONENT A), IN A PRE-POLYMER ISOCIANATOTIN C) THE PRE-POLYMER PRODUCED IN PHASE B) IS MIXED TOGETHER WITH THE REST OF COMPONENT B), USING TOTALLY IN PHASES A) TO C) A NCO: OH PROPORTION OF 2.05: 1 TO 6: 1, WHICH IS NCO RATIO: OH FROM 0.9 TO 1 , 1, IF ALL THE COMPONENTS OF PHASES A) AF), D) THE MIXTURE PRODUCED IN PHASE C) IS COOLED TO A TEMPERATURE 190 (DEGREES) C, E) THE MIXTURE OBTAINED IN PHASE D ) IS CONTINUOUSLY AND INTENSELY MIXED FOR A MAXIMUM OF 5 SECONDS, WITH ONE OR SEVERAL DIOL CHAIN PROLONGERS, OPTIONALLY TRIOL, AND / OR DIAMINE C) WITH A MOLE WEIGHT OF 60 TO 500, AND F) THE MIXTURE OBTAINED IN THE PHASE E) IS CONTINUOUSLY TRANSFORMED IN THERMOPLASTIC POLYURETHANE, USING A REACTOR DIFFERENT THAN THAT OF PHASE B).