公开(公告)号：FI62117B

公开(公告)日：1982-07-30

申请号：FI752854

申请日：1975-10-14

Applicant: BASF AG

Inventor： ZAHN ERWIN ,  CORDES CLAUS ,  ZAHRADNIK FRANZ ,  WEISS HANS-PETER

IPC: B29C47/88 ,  C08L77/00 ,  C08K3/34 ,  C08L77/02

公开(公告)号：CA1056991A

公开(公告)日：1979-06-19

申请号：CA234355

申请日：1975-08-26

Applicant: BASF AG

Inventor： DOERFEL HELMUT ,  CORDES CLAUS

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/16 ,  C08G69/24

Abstract: A process for continuous production of polyamides by continuous transport of a mixture or one or more lactams and from 1 to 15% and preferably from 3 to 8% of water and optionally other polyamide-forming compounds such as the salts of dicarboxylic acids and diamines or aminocarboxylic acids through a number of reaction zones under polyamide-forming conditions, said mixture of starting materials being heated in a first reaction zone to temperatures of from 210.degree. to 330.degree.C and preferably from 220.degree. to 280.degree.C, whereupon the polycondensation mixture is adiabatically vented in a further reaction zone and is then polymerized to completion in yet another reaction stage to form high molecular weight polyamides. The process is characterized in that(a) the mixture of starting materials is heated in the first reaction zone at pressures which are above the respective vapor pressures of the starting materials and prevent the formation of a vapor phase, said heating being effected for from 5 minutes to 2 hours and preferably from 10 minutes to 1 hour until a conversion of at least 70% and preferably 80% has been reached;(b) the polycondensation mixture is vented in the second zone to pressures of from 1 to 11 bars and preferably from 1 to 6 bars and is then immediately heated in a third reaction zone, preferably together with the steam formed during adiabatic venting, with the application of heat and evaporation of the major portion of the water at the said pressure obtained by venting or a lower pressure, said heating being carried out for less than 10 minutes and preferably less than 5 minutes at temperatures of from 250.degree. to 350.degree.C and preferably from 260.degree. to 280.degree.C, whereupon(c) the polymerization mixture is separated from the steam in a fourth reaction zone and is polymerized to completion in a further reaction stage to form high molecular weight polyamides.

公开(公告)号：CA1056085A

公开(公告)日：1979-06-05

申请号：CA237603

申请日：1975-10-10

Applicant: BASF AG

Inventor： ZAHN ERWIN ,  CORDES CLAUS ,  SIMON GEORG N ,  WEISS HANS-PETER

IPC: C08L77/00 ,  C08K5/10 ,  C08L77/06

Abstract: A film of poly(hexamethylenediamine adipate) (nylon 6,6) having a relative viscosity of from 2.4 to 4.0 and which contains from 0.01 to 2 per cent by weight of an ester of an octanol with p-hydroxybenzoic acid. The nylon 6,6 films obtained by the process of the invention are, surprisingly, very transparent and free from blotches and streaks, and are distinguished by very high uniformity and constancy of film thickness, of optical and mechanical properties, and of surface quality.

公开(公告)号：CA1052941A

公开(公告)日：1979-04-17

申请号：CA243057

申请日：1976-01-05

Applicant: BASF AG

Inventor： CORDES CLAUS ,  ZAHRADNIK FRANZ

IPC: C08G69/00 ,  C08G69/16 ,  C08G69/46 ,  C08J11/04

Abstract: A process for the manufacture of polyamides from .epsilon.-caprolactam and/or other polyamideforming starting compounds by polymerization and subsequent extraction of the polymer. The extract containing solvent, monomer and oligomers is concentrated in the absence of atmospheric oxygen, the surfaces which come into contact with the extract being made of materials which are inert under the conditions of the concentration process, and the concentrate, without further purification or separation, is polymerized by itself or together with other polyamide-forming starting compounds.

公开(公告)号：CA1050688A

公开(公告)日：1979-03-13

申请号：CA237602

申请日：1975-10-10

Applicant: BASF AG

Inventor： JESERICH WOLFGANG-DIETER ,  CORDES CLAUS ,  SEYDL WOLFGANG ,  WEISS HANS-PETER

IPC: C08G69/16 ,  C08L77/00 ,  C08K3/34 ,  C08J3/22

Abstract: Process for the continuous manufacture of polymeric starting materials for high-grade transparent thin sheeting, wherein (a) {-caprolactam is continuously agitated in a first reaction zone under polyamide-forming conditions at temperatures of from 240.degree. to 290.degree.C until at least 20% and preferably at least 35% of the {-caprolactam has reacted,(b) magnesium silicate having a particle size of less than 30 .mu.m is then added to the melt to give magnesium silicate concentrations in the reaction mixture of from 0.0005 to 0.5% and preferably from 0.0001 to 0.01%, and (c) the melt is then polymerized in further stages to completion until the relative viscosity is from 2.4 to 3.3 and preferably from 2.5 to 2.8.

公开(公告)号：FI772605A

公开(公告)日：1978-03-26

申请号：FI772605

申请日：1977-09-01

Applicant: BASF AG

Inventor： CORDES CLAUS ,  HORN PETER ,  WEISS HA HANS-PETER ,  GUTSCHE HERBERT

IPC: C08J3/22 ,  C08K3/10 ,  C08K3/16 ,  C08L77/00 ,  C08L

Abstract: Thermoplastic nylons are stabilized with copper compounds and synergistic halides by incorporation of from 0.1 to 10% of a concentrate of nylon, copper bromide or iodide and calcium bromide, zinc bromide or magnesium bromide. The stabilized nylons may be thermoplastically processed to give semimanufactures or films.

公开(公告)号：FI761944A

公开(公告)日：1977-01-04

申请号：FI761944

申请日：1976-07-02

Applicant: BASF AG

Inventor： HORN PETER ,  ZAHN ERWIN ,  ILLERS KARL HEINZ ,  CORDES CLAUS

IPC: B29C47/00 ,  D01F6/60 ,  C08K

公开(公告)号：FI760826A

公开(公告)日：1976-10-17

申请号：FI760826

申请日：1976-03-26

Applicant: BASF AG

Inventor： HORN PETER ,  DOERFEL HELMUT ,  ILLERS KARL HEINZ ,  SCHLAG JOHANNES ,  CORDES CLAUS ,  WEISS HANS-PETER

IPC: C08K3/16 ,  C08G