公开(公告)号：DE102005054877A1

公开(公告)日：2007-05-24

申请号：DE102005054877

申请日：2005-11-17

Applicant: BASF AG

Inventor： SCHWITTAY CLAUDIUS ,  BLINZLER MARKO ,  MECKELNBURG DIRK

IPC: C08G2/28

公开(公告)号：DE102005012482A1

公开(公告)日：2006-09-21

申请号：DE102005012482

申请日：2005-03-16

Applicant: BASF AG

Inventor： ASMANN JENS ,  ZOELLNER KNUT ,  BLINZLER MARKO ,  URTEL MELANIE ,  SCHWITTAY CLAUDIUS

IPC: C08G2/18

Abstract: A process for the preparation of polyoxymethylenes by cationic polymerization of the monomers a) in the presence of initiators b) and, if appropriate, in the presence of regulators c) and subsequent deactivation and isolation of the polymer, wherein the total amount of proton donors is less than 5000 ppm in the entire polymerization.

公开(公告)号：AT377611T

公开(公告)日：2007-11-15

申请号：AT05750544

申请日：2005-05-17

Applicant: BASF AG

Inventor： SCHWITTAY CLAUDIUS ,  STOECKELMANN ELMAR ,  HEINEMANN JOHANNES ,  ZOELLNER KNUT ,  STAMMER ACHIM

IPC: C08G2/10 ,  C08G2/08 ,  C08J11/02 ,  C08L59/00

Abstract: A process for removing residual monomers from polyoxymethylene homo- or copolymers, comprising the following process steps: a) the residual monomers are removed in gaseous form as vapors from the polymer in a devolatilization apparatus, b) the residual monomer vapors are removed through a vapor pipe, c) the residual monomers are condensed from the vapors in a condensation apparatus at from 1.09 to 102.4 bar and from 102 to 230° C., the temperature not falling below 102° C. at any point of the condensation apparatus, and those surfaces of the condensation apparatus which come into contact with the vapors being coated with a liquid film of condensed residual monomers.

公开(公告)号：DE102005046593A1

公开(公告)日：2007-04-05

申请号：DE102005046593

申请日：2005-09-28

Applicant: BASF AG

Inventor： ZOELLNER KNUT ,  ASMANN JENS ,  SCHWITTAY CLAUDIUS

IPC: C08G2/18

Abstract: In the production of polyoxymethylene homo- or co-polymers (POM) in a tubular reactor, the reactor has the following zones: (I) initiator mixing zone, in which suitable monomers are mixed with polymerization initiator, (II) polymerization zone, in which mixture is reacted to POM, (III) deactivator mixing zone, in which deactivator (A) is mixed with reaction mixture (B), and (IV) deactivation zone, in which (B) is deactivated by (A), where (a) (I) and/or (III) has dynamic inserts and (b) maximum reactor diameter in (I) is not > 90% of that of (II). Independent claims (1) polyoxymethylene homo- or co-polymers obtained by this process; (2) use of the specified reactor for production of polyoxymethylene homo- or co-polymers.

公开(公告)号：DE102005038037A1

公开(公告)日：2007-02-15

申请号：DE102005038037

申请日：2005-08-09

Applicant: BASF AG

Inventor： LOTH WOLFGANG ,  SEIDL VOLKER ,  BRUHNS STEFAN ,  HUNGENBERG KLAUS-DIETER ,  KOCH JUERGEN ,  SCHADE CHRISTIAN ,  SCHWITTAY CLAUDIUS

IPC: C08F2/12 ,  C08F2/02 ,  C08F112/08

Abstract: The invention relates to a process for continuously preparing styrene polymers by anionic spray polymerization, which comprises i) styrene and the initiator solution being mixed in a dynamic or static mixer and then the mixture being sprayed, ii) the resultant droplets passing from the liquid monomer state to the melted polymer state during their free fall in the spraying tower, iii) the melt droplets being collected as a melt at the foot of the tower, the melt having a monomer content of below 1%, preferably below 0.1% (

公开(公告)号：DE102005012480A1

公开(公告)日：2006-09-21

申请号：DE102005012480

申请日：2005-03-16

Applicant: BASF AG

Inventor： ASMANN JENS ,  ZOELLNER KNUT ,  BLINZLER MARKO ,  URTEL MELANIE ,  SCHWITTAY CLAUDIUS

IPC: C08G2/28 ,  C08G2/18

Abstract: Process for removing unconverted residual monomers from polyoxymethylenes, wherein a devolatilization step is carried out in an extrudate devolatilizer.

公开(公告)号：DE502005001905D1

公开(公告)日：2007-12-20

申请号：DE502005001905

申请日：2005-05-17

Applicant: BASF AG

Inventor： SCHWITTAY CLAUDIUS ,  STOECKELMANN ELMAR ,  HEINEMANN JOHANNES ,  ZOELLNER KNUT ,  STAMMER ACHIM

IPC: C08G2/10 ,  C08G2/08 ,  C08J11/02 ,  C08L59/00

Abstract: A process for removing residual monomers from polyoxymethylene homo- or copolymers, comprising the following process steps: a) the residual monomers are removed in gaseous form as vapors from the polymer in a devolatilization apparatus, b) the residual monomer vapors are removed through a vapor pipe, c) the residual monomers are condensed from the vapors in a condensation apparatus at from 1.09 to 102.4 bar and from 102 to 230° C., the temperature not falling below 102° C. at any point of the condensation apparatus, and those surfaces of the condensation apparatus which come into contact with the vapors being coated with a liquid film of condensed residual monomers.

公开(公告)号：DE102005022641A1

公开(公告)日：2006-11-16

申请号：DE102005022641

申请日：2005-05-11

Applicant: BASF AG

Inventor： SCHWITTAY CLAUDIUS ,  BLINZLER MARKO ,  MATTMANN WOLFGANG ,  ASMANN JENS

IPC: C08G2/28 ,  C08L59/04

公开(公告)号：DE10330935A1

公开(公告)日：2005-02-03

申请号：DE10330935

申请日：2003-07-08

Applicant: BASF AG

Inventor： SUHM JUERGEN ,  LOTH WOLFGANG ,  SCHWITTAY CLAUDIUS ,  MEHLER CHRISTOF ,  KOCH JUERGEN ,  GRAMMATIS ZAFIRIOS ,  CLAUER JAUME ,  WIEDEMANN ALEXANDRA ,  NIEKEN ULRICH ,  WASMER KARL-HEINZ ,  SCHADE CHRISTIAN ,  DESBOIS PHILIPPE

IPC: C08F279/02 ,  C08F2/26

Abstract: Production of rubber-modified styrene polymers (I) comprises (1) producing rubber (II) dispersion by anionic dispersion polymerization of diene and optionally styrene monomer(s) in 3-6 carbon aliphatic hydrocarbon (III) which is nonsolvent for (II); (2) mixing intensively with styrene monomer and optionally comonomer, without separating (III), to dissolve (II) in monomer(s); and (3) anionic or free radical polymerization of (II) solution to (I) and simultaneous removal of (III). An independent claim is also included for rubber-modified styrene polymers made by this process.

公开(公告)号：DE10316266A1

公开(公告)日：2004-10-28

申请号：DE10316266

申请日：2003-04-08

Applicant: BASF AG

Inventor： DESBOIS PHILIPPE ,  GRAMMATIS ZAFIRIOS ,  LOTH WOLFGANG ,  WALTER HANS-MICHAEL ,  KOCH JUERGEN ,  SUHM JUERGEN ,  MITULLA KONRAD ,  SCHWITTAY CLAUDIUS

IPC: C08F12/04 ,  C08F36/04 ,  C08F297/04 ,  C08F2/44 ,  C08F2/04 ,  C08F212/08 ,  C08F236/02 ,  C08F297/00 ,  C08J5/00

Abstract: Production of homo- or co-polymers from styrene and/or diene monomers by anionic polymerization followed by degassing and addition of a mineral oil additive is such that at least a part of the mineral oil is first added after the degassing step.