公开(公告)号：US3579483A

公开(公告)日：1971-05-18

申请号：US3579483D

申请日：1969-04-15

Applicant: ALLIED CHEM

Inventor： TWILLEY IAN C ,  RUSSELL WILLIAM N ,  PETERSON WELDON H

IPC: C08G69/04 ,  C08G69/16 ,  C08G20/14 ,  C08G20/42

CPC classification number: C08G69/16 ,  C08G69/04

Abstract: APPARATUS AND PROCESS FOR CONTINUOUS POLYMERIZATION OF POLYAMIDEDS TO PRODUCE A POLYMER WHEREIN THE REQUIRED VISCOSITY CAN BE OBTAINED MUCH MORE RAPIDLY AND THE EXTENT OF POLYMERIZATION FAR GREATER THAN HERETOFORE POSSIBLE BY USE OF A VACUUM DEMOISTURIZING COLUMN WITHIN THE POLYMERIZATION TRAIN WHEREIN THE PRE-POLYMER IS CONVERTED TO POLYAMIDE OF HIGHER MOLECULAR WEIGHT IN A SHORT PERIOD OF TIME BY EXPOSING AT LEAST ABOUT 0.2 SQUARE FOOT OF PRE-POLYMER PER POUND THEREOF TO A TEMPERATURE OF BETWEEN ABOUT 230*C. AND ABOUT 300*C. AT PRESSURES OF LESS THAN ABOUT 500 MM. HG. THE APPARATUS AND PROCESS YIELDS EVEN GREATER EFFICIENCIES WHEN USED IN CONJUNCTION WITH POLYAMIDATION CATALYSTS.

公开(公告)号：US3704100A

公开(公告)日：1972-11-28

申请号：US3704100D

申请日：1970-07-06

Applicant: ALLIED CHEM

Inventor： TWILLEY IAN C ,  RUSSELL WILLIAM N ,  PETERSON WELDON H

IPC: C08G69/04 ,  C08G69/16 ,  C08G20/14 ,  C08G20/42

CPC classification number: C08G69/04 ,  C08G69/16

Abstract: APPARATUS FOR POLYMERIZATION OF E-CAPROLACTAM TO PRODUCE A POLYCAPROAMIDE POLYMER MORE RAPIDLY AND WITH THE EXTENT OF POLYMERIZATION FAR GREATER THAN HERETOFORE BY UTILIZING A VACUUM DEMOISTURIZING COLUMN WITHIN THE POLYMERIZATION TRAIN THAT UPON EXTRUSION OF SAID POLYMER THE VOLATILES ARE SUBSTANTIALLY ALL REMOVED BY AN ENTRAIN-

MENT SEPARATOR MEANS WHEREBY AN IMPROVED POLYCAPROAMIDE POLYMER IS OBTAINED.