公开(公告)号：US3875121A

公开(公告)日：1975-04-01

申请号：US37250173

申请日：1973-06-22

Applicant: BAYER AG

Inventor： BRASSAT BERT ,  REINKING KLAUS

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/18 ,  C08G69/20 ,  C08G20/18

CPC classification number: C08G69/18

Abstract: An improved process for the production of polyamides by the activated anionic polymerisation of lactams having at least 6 ring members in the presence of an activator and of a catalytically active solution of an alkali metal or alkaline earth metal lactamate in a solvent mixture of Alpha -pyrrolidone and a lactam having at least 7 ring members, the improvement comprises the addition of 0.1 to 25 % by weight of at least one alcohol having 3-21 carbon atoms and 0 to 35 % by weight of at least one carboxylic acid N-alkyl-amide which is liquid at room temperature to said catalytically active solution.

公开(公告)号：US3676544A

公开(公告)日：1972-07-11

申请号：US3676544D

申请日：1970-05-20

Applicant: BAYER AG

Inventor： REINKING KLAUS ,  VOGEL HELMUT ,  HECHELHAMMER WILHEIM ,  SCHNEIDER KURT

IPC: C08G69/00 ,  B29C35/00 ,  B29C45/00 ,  C08G69/04 ,  C08G69/18 ,  B29F1/08

CPC classification number: C08G69/18 ,  B29C45/0001

Abstract: This invention relates to a process for the production of polyamide mouldings which comprises polymerizing a mixture consisting of a lactam, a catalyst and an activator in a screw injection moulding machine, said mixture being delivered to said screw injection moulding machine under the effect of an external pressure. The mixture is delivered at a pressure of at least 2 atms. under the influence of a pressure generator through a feed opening to the feed zone and a screw injection moulding machine and is polymerized in the injection moulding machine to form a polyamide at a temperature above the melting temperature of the polyamide and the resulting polyamide melt is forced by the injection moulding machine into a mould.

Abstract translation: 本发明涉及一种生产聚酰胺模制品的方法，其包括在螺杆注射成型机中聚合由内酰胺，催化剂和活化剂组成的混合物，所述混合物在外部的作用下被输送到所述螺杆注射成型机 压力。 混合物在至少2atms的压力下输送。 在压力发生器通过进料口的进料口和螺杆注射成型机的影响下，在注射成型机中聚合以在聚酰胺的熔融温度以上的温度下形成聚酰胺，所得聚酰胺熔体被迫 由注塑机注入模具。

公开(公告)号：US3634574A

公开(公告)日：1972-01-11

申请号：US3634574D

申请日：1970-05-21

Applicant: BAYER AG

Inventor： REINKING KLAUS ,  VOGEL HELMUT ,  HECHELHAMMER WILHELM ,  SCHNEIDER KURT

IPC: C08G69/00 ,  B29B7/00 ,  B29C47/00 ,  B29C47/10 ,  B29C47/38 ,  C08G69/04 ,  C08G69/18 ,  B28B3/22

CPC classification number: C08G69/18 ,  B29C47/0009 ,  B29C47/1063 ,  B29C47/366 ,  B29K2105/0005

Abstract: THE INVENTION RELATES TO A PROCESS FOR THE CONTINUOUS PRODUCTION OF POLYAMIDE SECTIONS WHICH COMPRISES FEEDING A SOLID POLYMERISABLE MIXTURE CONSISTING OF A LACTAM OR A MIXTURE OF LACTAMS, A BASIC CATALYST AND AN ACTIVATOR TO A PRESSURE GENERATOR, DELIVERING SAID MIXTURE THROUGH THE FEED OPENING OF A SINGLE-SCREW EXTRUDER, SAID DELIVERING BEING EFFECTED UNDER A PRESSURE AT LEAST EQUIVALENT TO THE DYNAMIC PRESSURE GENERATED BY THE SINGLE-SCREW EXTRUDER, MELTING SAID POLYMERISABLE MIXTURE AND POLYMERISING IT IN THE BARREL OF THE SINGLE-SCREW EXTRUDER, SAID POLYMERISING BEING EFFECTED AT A TEMPERATURE ABOVE THE MELTING TEMPERATURE OF THE POLYAMIDE TO BE FORMED AND EXTRUDING THE RESULTING POLYAMIDE MELT.

公开(公告)号：US3682847A

公开(公告)日：1972-08-08

申请号：US3682847D

申请日：1969-12-17

Applicant: BAYER AG

Inventor： GILCH HEINRICH ,  DAMSKY WALTER ,  REINKING KLAUS

IPC: C08J9/04 ,  B29B7/00 ,  B29C39/00 ,  B29C39/22 ,  C08G69/18 ,  C08J9/12 ,  C08J1/16

CPC classification number: C08J9/12 ,  C08G69/18 ,  C08J2377/02 ,  Y10S264/56 ,  Y10S521/901

Abstract: PROCESS FOR THE PRODUCTION OF POLYAMIDE FOAM BY DISSOLVING UNDER PRESSURE A GAS IN A POLYMERISABLE MIXTURE OF A LACTAM, A BASIC CATALYST AND AN ACTIVATOR, HEATING THIS REACTION MASS TO POLYMERISATION TEMPERATURE, RELEASING THE PRESSURE OF THE REACTION MASS, AND THEREAFTER FINALLY POLYMERISING THE REACTION MASS IN A MOULD.