公开(公告)号：DE102005054151A1

公开(公告)日：2007-05-16

申请号：DE102005054151

申请日：2005-11-14

Applicant: BASF AG

Inventor： GUENTHERBERG NORBERT ,  HOFMANN JUERGEN ,  WASMER KARL-HEINZ ,  LOTH WOLFGANG ,  SCHIERHOLZ JENS-UWE ,  SCHMAUS PAULUS ,  MOURS MARIAN ,  SCHADE CHRISTIAN ,  ITTEMANN PETER ,  HEINEN HARTMUT ,  CZAUDERNA BERNHARD ,  SAUER MICHAEL ,  BARDON RAINER ,  KRUEGER MARCO

IPC: C08F6/10 ,  B01D1/06 ,  B01D19/00 ,  C08J3/00 ,  F28F1/40

Abstract: The invention relates to a tube bundle heat exchanger (R) for removing dissolved substances from a polymer solution (P) by degassing, having a bundle of tubes (R) which are arranged parallel to one another and vertically and are fastened at both ends in each case in one tube plate (B), and having a degassing region below the lower tube plate (B), having an insert (1) in each tube (R), which insert (1) narrows the free throughflow cross section through the tube (R), and wherein the polymer solution (P) is supplied into the tubes (R) in a single-phase liquid state, and having a casing space around the tubes (R) which is traversed by a heat carrier, wherein the degassing takes place by means of a pressure drop between the inlet pressure of the polymer solution (P) in the tube bundle heat exchanger (R) and the degassing region, characterized in that each insert (1) is designed in such a way as to generate a pressure step between the inlet pressure and the pressure in the degassing region, by means of which pressure step a predefined low residual content of dissolved substances is obtained in the degassed polymer, and an additional heat input which is necessary for this purpose takes place via the heat carrier into the single-phase liquid polymer solution (P).

公开(公告)号：DE502004006130D1

公开(公告)日：2008-03-20

申请号：DE502004006130

申请日：2004-03-10

Applicant: BASF AG

Inventor： GUENTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  SAUER MICHAEL ,  BARDON RAINER ,  AN YOHWAN

IPC: B29B9/12 ,  B29B9/06

Abstract: Granule surface contours include less than 10% concave locations, the remainder being convex, as determined by incident-light interference contrast spectroscopy. Independent claims are included for the following: (1) a method of manufacturing polymer granules comprising forcing a polymer melt through a nozzle into a cutting chamber flooded with coolant and dividing the polymer; (2) a method of manufacturing moldings, film or fibers; and (3) a method of quality control employing incident light interference contrast spectroscopy to measure and control concave inclusions in their surfaces. The interval between emerging from the nozzle and cutting to granules is less than 20 ms. The granules are cooled in liquid coolant to a temperature of 60-130[deg]C at a rate of 2-30[deg]C/s. Granule/coolant ratio is 0.03:1 to 0.12:1. Coolant is introduced into the chamber at a pressure of 1.1 bar. The quality control method, without consideration of granule surface curvature, determines ring-shaped reflections arising from concave locations, and the surface area they enclose. These areas are expressed as a ratio of the total observed surface area.

公开(公告)号：DE50210766D1

公开(公告)日：2007-10-04

申请号：DE50210766

申请日：2002-09-20

Applicant: BASF AG

Inventor： GUENTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  SAUER MICHAEL ,  BARDON RAINER ,  AN YOHWAN

IPC: B29C48/395 ,  B29C48/76

Abstract: The extruder has one or more degassing openings which are fitted with either a woven metal wire mesh, a finely perforated plate or a slit screen. Water is extracted either partially or completely in the fluid state. At least one dewatering opening is located upstream in front of a first metering unit and another downstream from the latter. Meshes are held in a frame pressed against the openings and in particular are folded onto an opening or attached to the latter by a bayonet connection. A preferred extruder has twin screws and: a) one or more metering sections in which thermoplastic material containing water or another vaporizable fluid is fed into the barrel and one or more dewatering openings; b) a compression section for dewatering a thermoplastic and including a restrictor and a dewatering opening; c) a feed section in which further thermoplastic melt is added; d) a mixing, kneading and/or plasticizing section; e) a degassing section in which residual water is extracted as steam via a dewatering opening; f) a metering section. All dewatering openings are fitted with a woven mesh, fine perforated plate or slit screen. Initial thermoplastic components contain not more than90wt% and are mixed with additional components while degassing and dewatering. Independent claims are included for: a) a process for manufacturing thermoplastics in which thermoplastic materials are fed into the claimed equipment, degassed and then metered; b) use of a metal wire mesh, fine perforated plate and/or slit screen for covering a degassing and/or dewatering opening in the claimed extruder.

公开(公告)号：DE102004019455A1

公开(公告)日：2005-11-03

申请号：DE102004019455

申请日：2004-04-19

Applicant: BASF AG

Inventor： GUENTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  SAUER MICHAEL ,  BARDON RAINER ,  HAEHNLEIN MARC ,  PEPERS MICHEL ,  MAC KEE GRAHAM EDMUND

IPC: B29B7/00 ,  C08F279/02 ,  C08F279/04 ,  C08F287/00 ,  C08J3/05 ,  C08L51/00 ,  C08L51/04 ,  C08L55/02

Abstract: Preparation of molding materials (I) (comprising thermoplastic matrix (T) and a rubber (K1) dispersed within (T)) comprises mixing of (K1) with (T) under evaporation of processed water to form an emulsion and simultaneously removing the organic volatile components in the reaction mixture, where (K1) (added in the reaction) is formed in an emulsion without prior draining of the solid material containing fluid (mixture (M1)).

公开(公告)号：AU2003264278A1

公开(公告)日：2004-04-19

申请号：AU2003264278

申请日：2003-09-08

Applicant: BASF AG

Inventor： GUNTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  SAUER MICHAEL ,  BARDON RAINER ,  AN YOHWAN

IPC: B29C48/395 ,  B29C48/76 ,  B29C47/76

Abstract: The extruder has one or more degassing openings which are fitted with either a woven metal wire mesh, a finely perforated plate or a slit screen. Water is extracted either partially or completely in the fluid state. At least one dewatering opening is located upstream in front of a first metering unit and another downstream from the latter. Meshes are held in a frame pressed against the openings and in particular are folded onto an opening or attached to the latter by a bayonet connection. A preferred extruder has twin screws and: a) one or more metering sections in which thermoplastic material containing water or another vaporizable fluid is fed into the barrel and one or more dewatering openings; b) a compression section for dewatering a thermoplastic and including a restrictor and a dewatering opening; c) a feed section in which further thermoplastic melt is added; d) a mixing, kneading and/or plasticizing section; e) a degassing section in which residual water is extracted as steam via a dewatering opening; f) a metering section. All dewatering openings are fitted with a woven mesh, fine perforated plate or slit screen. Initial thermoplastic components contain not more than90wt% and are mixed with additional components while degassing and dewatering. Independent claims are included for: a) a process for manufacturing thermoplastics in which thermoplastic materials are fed into the claimed equipment, degassed and then metered; b) use of a metal wire mesh, fine perforated plate and/or slit screen for covering a degassing and/or dewatering opening in the claimed extruder.