公开(公告)号：ES2124939T3

公开(公告)日：1999-02-16

申请号：ES95112920

申请日：1995-08-17

Applicant: BASF AG

Inventor： GOTZ WALTER DR

IPC: C08G69/00 ,  C08G69/04 ,  C08G69/06 ,  C08G69/36 ,  C08G69/26 ,  C08G69/28 ,  C08G69/30 ,  C08G73/00

Abstract: The prodn. of high-mol. wt. polyamides from nitriles comprises (a) polymerisation of amino-nitriles of formula H2N(CH2)mCN (I) or mixts. of diamines (II) with dinitriles (III) in a mole ratio of (0.98:1)-(1.02:1) to give a prepolymer (A) with a rel. viscosity (1% in conc. H2SO4 at 23 deg.C) of 1.4-2.0: H2N-(CH2)m-CN (I) H2N-(CH2)n-NH2 (II) NC-(CH2)q-CN (III) m, n, p = 2-12; followed by (b) granulation and (c) solid-phase post-condensation at 5-100 deg.C below the m.pt. of the prepolymer in presence of an inert gas contg. at least 50 vol.% superheated steam, to give a high-mol. wt. polyamide (B) with a rel. viscosity of 2.3-5.0, the difference between the rel. viscosities of (A) and (B) being at least 0.4. Also claimed are (i) high-mol. wt. polyamides (B) as obtd. by this process; (ii) mouldings, film and fibres produced from these polyamides.

公开(公告)号：MY122288A

公开(公告)日：2006-04-29

申请号：MYPI20005088

申请日：2000-10-31

Applicant: BASF AG

Inventor： DEININGER JURGEN ,  GOTZ WALTER DR ,  LUDWIG ALFONS DR ,  PIPPER GUNTER

IPC: C08G69/04 ,  C08J5/18 ,  C08G69/00 ,  C08G69/02 ,  C08G69/14 ,  C08G69/16 ,  C08G69/26 ,  C08G69/28 ,  C08G69/36 ,  C08G69/48 ,  D01F6/80

Abstract: A PROCESS FOR CONTINUOUS PRODUCTION OF COPOLYAMIDES BASED ON A LACTAM (I), A DIAMINE (II) AND A DICARBOXYLIC ACID (III) COMPRISES REACTING A MIXTURE (IV) COMPRISING A DIAMINE (II), A DICARBOXYLIC ACID (III) AND WATER IN A FIRST REACTION ZONE AT A PRESSURE IN THE RANGE FROM 1.3*105 TO 2.5*105 PA IN THE ENTRY ZONE OF THE REACTION ZONE AND AT A TEMPERATURE ABOVE THE MELTING POINT OF POLYMER (V) TO A CONVERSION, BASED ON THE MOLAR AMOUNTS OF DIAMINE (II) AND DICARBOXYLIC ACID (III), OF AT LEAST 80% TO FORM A POLYMER (V), REACTING A MIXTURE (VI) COMPRISING LACTAM (I) AND WATER IN A SECOND REACTION ZONE AT A PRESSURE IN THE RANGE FROM 5*105 TO 40*105 PA AND AT A TEMPERATURE ABOVE THE MELTING POINT OF POLYMER (VII) TO A CONVERSION, BASED ON THE MOLAR AMOUNT OF LAC TAM (I), OF AT LEAST 80% TO FORM A POLYMER (VII), THEN REACTING POLYMER (V) AND POLYMER (VII) WITH EACH OTHER IN A THIRD REACTION ZONE AT A PRESSURE IN THE RANGE FROM 1*105 TO 1.5*105 PA IN THE ENTRY ZONE OF THE REACTION ZONE AT TEMPERATURES ABOVE THE MELTING POINT OF POLYMER (VIII) TO FORM A POLYMER (VIII), SAID POLYMER (VIII) HAVING A 95°C WATER EXTRACTABLES CONTENT, BASED ON LACTAM (I), DIAMINE (II) AND DICARBOXYLIC ACID (III), OF NOT MORE THAN 10% BY WEIGHT, AND THEN EXTRACTING THE POLYMER (VIII) WITH WATER TO OBTAIN THE COPOLYAMIDE.