公开(公告)号：DE102005034490A1

公开(公告)日：2007-01-25

申请号：DE102005034490

申请日：2005-07-20

Applicant: BASF AG

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

IPC: C08G2/18 ,  C08G2/24

Abstract: Process for preparing polyoxymethylene copolymers (POMs) by a) polymerizing a reaction mixture comprising suitable main monomers and comonomers and also a polymerization initiator and, if appropriate, a regulator, b) adding a deactivator and c) removing the residual monomers, wherein the amount of compounds whose melting point at 1013 hPa is below 60° C. present in the reaction mixture at any point in time during the process is not more than 0.1% by weight, with the POM, the monomers, comonomers, polymerization initiators, deactivators and regulators not being included in the calculation.

公开(公告)号：DE102005032700A1

公开(公告)日：2007-01-25

申请号：DE102005032700

申请日：2005-07-13

Applicant: BASF AG

Inventor： SAUERER WOLFGANG ,  ASMANN JENS ,  HENNENBERGER FLORIAN ,  URTEL MELANIE

IPC: B29C71/04 ,  B29C47/88 ,  B29C48/92

公开(公告)号：DE102005027802A1

公开(公告)日：2006-12-21

申请号：DE102005027802

申请日：2005-06-15

Applicant: BASF AG

Inventor： ASMANN JENS ,  TRILLER MICHAEL ,  SCHWITTAY CLAUDIUS ,  ZOELLNER KNUT

IPC: C08G2/18 ,  C08G2/28

公开(公告)号：DE102004054629A1

公开(公告)日：2006-05-18

申请号：DE102004054629

申请日：2004-11-11

Applicant: BASF AG

Inventor： ASMANN JENS ,  ZOELLNER KNUT

IPC: C08G2/18

Abstract: Process for preparation of polyoxymethylenes via polymerization of the monomers a) in the presence of cationic initiators b) and also, if appropriate, in the presence of regulators c), followed by deactivation and discharge from the reactor, which comprises using, as deactivator (d) at least one basic compound having at least 2 amino functions of different reactivity in one molecule.

公开(公告)号：DE102005059965A1

公开(公告)日：2007-06-28

申请号：DE102005059965

申请日：2005-12-15

Applicant: BASF AG

Inventor： SAUERER WOLFGANG ,  ANDERLIK RAINER ,  HENNENBERGER FLORIAN ,  ASMANN JENS

IPC: B29B13/02 ,  B29B9/06 ,  B29C47/08

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：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：DE102005004855A1

公开(公告)日：2006-08-03

申请号：DE102005004855

申请日：2005-02-01

Applicant: BASF AG

Inventor： RYLANDER JESSICA ,  ZOELLNER KNUT ,  BLINZLER MARKO ,  URTEL MELANIE ,  ASMANN JENS

IPC: C08G2/28 ,  B01J21/16 ,  B01J23/85 ,  C07C47/045 ,  C08G2/08 ,  C08G65/46

Abstract: Removing non-reacted formaldehyde oligomer containing monomer residue and polyoxymethylene homo- or -copolymer comprises: drawing-off the monomer residue from gaseous polymer, in a degassing device; and contacting the residue with a catalyst exhibiting acid group and at which the formaldehyde oligomer is transferred to monomer formaldehyde (where the pressure in the contacting step is less than or equal to the pressure in the drawing step). Independent claims are included for: (1) the preparation of polyoxymethylene homo- or -copolymers comprising producing or retaining the monomer in a monomer plant; polymerizing the monomer in the polymerization reactor to give polymers; and removing the monomer residue in the polymer, during or after polymerization, by the above method; and (2) a polyoxymethylene homo- or -copolymers obtained by the process.

公开(公告)号：DE102005002413A1

公开(公告)日：2006-07-27

申请号：DE102005002413

申请日：2005-01-18

Applicant: BASF AG

Inventor： ZOELLNER KNUT ,  RYLANDER JESSICA ,  ASMANN JENS

IPC: C08G2/28

公开(公告)号：DE102004036199A1

公开(公告)日：2006-03-23

申请号：DE102004036199

申请日：2004-07-26

Applicant: BASF AG

Inventor： ASMANN JENS ,  EIBECK PETER

IPC: C08L77/00 ,  C08J5/10 ,  C08K3/16 ,  C08K5/092 ,  C08K5/098 ,  C08K13/02