公开(公告)号：CA2378649A1

公开(公告)日：2001-01-04

申请号：CA2378649

申请日：2000-06-28

Applicant: BASF AG

Inventor： HEITZ THOMAS ,  NEUHAUS RALF ,  KLATT MARTIN

IPC: C08G63/183 ,  C08G63/78

Abstract: The invention relates to a method for the continuous production of polybutyleneterephthalate from terephthalic acid and 1,4-butanediol, comprising the following: d) the direct esterification of terephthalic acid with 1,4-butanediol in a reactor series consisting of at least two reactors; e) the precondensation of the product of esterification obtained in step a); f) the polycondensation of the precondensate obtained in step b). The reacto r series in step a) is operated with a falling reaction pressure and a non- rising temperature.

公开(公告)号：CA2377201A1

公开(公告)日：2001-01-04

申请号：CA2377201

申请日：2000-06-09

Applicant: BASF AG

Inventor： HEITZ THOMAS ,  KLATT MARTIN ,  NEUHAUS RALF

IPC: C08G63/78 ,  C08G63/85

Abstract: The invention relates to a method for the continuous production of polybutylene terephthalate from terephthal acid and 1,4-butane diole, comprising the following stages: a) direct esterification of terephthal acid with 1,4-butane diole in a reactor cascade of at least two reactors b) pre- condensation of the esterification product obtained in stage a), c) polycondensation of the pre-condensate obtained in stage b), whereby the temperature of the reactor cascade in stage a) is progressively decreased during its operation.

公开(公告)号：AT197169T

公开(公告)日：2000-11-15

申请号：AT97941972

申请日：1997-08-29

Applicant: BASF AG

Inventor： KLATT MARTIN ,  HEITZ THOMAS ,  GAREISS BRIGITTE

IPC: C08J5/00 ,  C08K3/18 ,  C08K5/5333 ,  C08K5/5357 ,  C08K7/02 ,  C08K13/00 ,  C08L25/00 ,  C08L25/02 ,  C08L67/00 ,  C08L67/02 ,  C08L71/02 ,  C08L71/12 ,  C08L77/00

Abstract: Thermoplastic molding compositions compriseA) from 5 to 97% by weight of a thermoplastic polymer selected from the group consisting of polyamides, polyesters, polyphenylene ethers, vinylaromatic polymers and mixtures of these,B) from 1 to 30% by weight of an alkylphosphonic acid compound of the formula I where R is alkyl having from 1 to 4 carbon atoms and x is 0 or 1,C) from 1 to 30% by weight of a synergist for B) selected from the group consisting of inorganic calcium and magnesium compounds and mixtures of these,D) from 1 to 50% by weight of a fibrous filler andE) from 0 to 40% by weight of other additives and processing aids,where the sum of the percentages by weight of components A) to E) is always 100%.

公开(公告)号：AU4366299A

公开(公告)日：1999-12-30

申请号：AU4366299

申请日：1999-05-22

Applicant: BASF AG

Inventor： HEITZ THOMAS ,  KLATT MARTIN

IPC: C08G63/85 ,  C08L67/02

公开(公告)号：DE19822208A1

公开(公告)日：1999-11-25

申请号：DE19822208

申请日：1998-05-18

Applicant: BASF AG

Inventor： QUEISSER JOACHIM ,  KLATT MARTIN ,  HEITZ THOMAS ,  WOLF PETER

IPC: C08G67/02 ,  C08K3/26 ,  C08L73/00 ,  C09K21/14 ,  C08J5/18 ,  C09D173/00 ,  D01F6/76 ,  D01F6/94

Abstract: A flame retardant, melt stable carbon monoxide copolymer (I) contains a magnesium-calcium carbonate and a basic magnesium carbonate. A flame retardant, melt stable carbon monoxide copolymer (I) comprises: (A) a copolymer of carbon monoxide and alpha -olefinically unsaturated compounds (B) mineral compounds consisting of (B1) a magnesium-calcium carbonate of formula (1) and (B2) a basic magnesium carbonate of formula (2) in a ratio of 10:1-1:10 and optionally (C) an antioxidant (D) an elastomeric polymer or (E) an additive. An Independent claim is also included for a process for the production of (I) by mixing (A) and (B) and optionally (C)-(E) at 180-250 deg C to form a homogeneous molding composition. MgxCay(CO3)x+y.m(H2O) (1) Mgn(CO3)v(OH)2n-2v.w(H2O) (2) x, y = 1 - 5, with x/y \- 1; m = \-0 n = 1 - 6 v = 1 - 5, with nV greater than 1 w = \-0

公开(公告)号：DE19814529A1

公开(公告)日：1999-10-07

申请号：DE19814529

申请日：1998-04-01

Applicant: BASF AG

Inventor： HEITZ THOMAS ,  HEEL HELMUT ,  BRAUNE PETER ,  KLATT MARTIN

IPC: C08J5/00 ,  C08G63/183 ,  C08G63/78 ,  C08L67/02 ,  C08L69/00 ,  C08L77/00 ,  C08G63/181 ,  C08G63/40

Abstract: According to the inventive method for producing polyalkylene arylates, an aromatic dicarboxylic acid or its esters or ester-forming derivatives is/are esterified or transesterified with a molar excess of an aliphatic dihydroxy compound and the resulting transesterification or esterification product is polycondensed. The invention is characterised in that the prepolymer is polycondensed with a viscosity number (VZ) of