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.

公开(公告)号：US3294756A

公开(公告)日：1966-12-27

申请号：US27727763

申请日：1963-05-01

Applicant: ALLIED CHEM

Inventor： RUSSELL WILLIAM N ,  WIESNER ALBERT H ,  SNIDER ORVILL E

IPC: C08G69/16

CPC classification number: C08G69/16

公开(公告)号：US3697579A

公开(公告)日：1972-10-10

申请号：US3697579D

申请日：1969-09-18

Applicant: ALLIED CHEM

Inventor： BALINT LASZLO J ,  LAZARUS STANLEY D ,  RUSSELL WILLIAM N

IPC: C07C69/80 ,  C07C69/82

CPC classification number: C07C69/80 ,  C07C69/82

Abstract: The esterification of a polycarboxylic acid with a polyol is described under conditions of direct esterification and wherein the reacting mass is a flowable, uniform dispersion of (1) a paste of the said polycarboxylic acid and the said polyol, and (2) at least 3 parts by weight per part paste of a partially esterified product of said polycarboxylic acid with said polyol.

公开(公告)号：US3689461A

公开(公告)日：1972-09-05

申请号：US3689461D

申请日：1969-09-18

Applicant: ALLIED CHEM

Inventor： BALINT LASZLO J ,  LAZARUS STANLEY D ,  RUSSELL WILLIAM N

IPC: C08G63/78 ,  C07C69/82

CPC classification number: C08G63/78 ,  C08G63/785

Abstract: A HIGH MOLEUCULAR WEIGHT LINEAR CONDENSATION POLYESTER IS PREPARED FROM A POLYCARBOXYLIC ACID AND A POLYOL BY (A) ESTERIFYING SAID POLYCARBOXYLIC ACID WITH SAID POLYOL BY SUBJECTING TO CONDITIONS OF DIRECT ESTERIFICATION A FLOWABLE, UNIFORM DISPERSION COMPRISED OF (1) A PASTE OF THE SAID POLYCARBOXYLIC ACID AND THE SAID POLYOL, AND (2) AT LEAST 3 PARTS BY WEIGHT PER PART PASTE OF A PARTIALLY ESTERIFIED PRODUCT OF SAID POLYCARBOXYLIC ACID WITH SAID POLYOL, AND THENCE (B) FURTHER ESTERIFYING AND POLYCONDENSING THE ESTERIFICATION PRODUCT OF STEP (A) UNTIL THERE IS OBTAINED AN IMPROVED POLYESTER OF THE DESIRED MOLECULAR WEIGHT.

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.