公开(公告)号：EP1951392A1

公开(公告)日：2008-08-06

申请号：EP06829950.2

申请日：2006-11-08

Applicant: BASF SE

Inventor： GÜNTHERBERG, Norbert ,  HOFMANN, Jürgen ,  WASSMER, Karl-Heinz ,  LOTH, Wolfgang ,  SCHIERHOLZ, Jens-Uwe ,  SCHMAUS, Paulus ,  MOURS, Marian ,  SCHADE, Christian ,  ITTEMANN, Peter ,  HEINEN, Hartmut ,  CZAUDERNA, Bernhard ,  SAUER, Michael ,  BARDON, Rainer ,  KRÜGER, Marco

IPC: B01D3/06 ,  B01D19/00 ,  B29B7/84 ,  C08F6/00 ,  C08L25/08

CPC classification number: B01D3/06 ,  B01D19/0036 ,  B01D19/0094 ,  C08F6/003 ,  F28D7/16 ,  F28F13/08

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：EP2254743A2

公开(公告)日：2010-12-01

申请号：EP09713650.1

申请日：2009-02-18

Applicant: BASF SE

Inventor： GÜNTHERBERG, Norbert ,  BARDON, Rainer ,  HEINEN, Hartmut ,  SAUER, Michael

IPC: B29C47/76 ,  B29C47/40 ,  B29B7/84

CPC classification number: B29B7/84 ,  B29B7/48 ,  B29C47/0011 ,  B29C47/0014 ,  B29C47/0019 ,  B29C47/0023 ,  B29C47/003 ,  B29C47/0871 ,  B29C47/40 ,  B29C47/763 ,  B29C47/767 ,  B29C47/8895 ,  B29C47/90 ,  B29K2007/00 ,  B29K2025/00 ,  B29K2027/06 ,  B29K2033/12 ,  B29K2055/02 ,  B29K2059/00 ,  B29K2067/00 ,  B29K2067/006 ,  B29K2069/00 ,  B29K2075/00 ,  B29K2077/00 ,  B29K2081/04 ,  B29K2081/06 ,  B29K2105/0008 ,  B29K2105/0026 ,  B29K2105/0032 ,  B29K2105/0038 ,  B29K2105/0044 ,  B29K2105/005 ,  B29K2105/06 ,  B29K2105/16

Abstract: The invention relates to a device for extruding moulding compounds, comprising at least two worms (1) received in a housing (3). Said device has at least one feed section, one transformation section and one discharge section, which can at least partially overlap each other, and at least one degassing opening (5). The degassing opening (5) creates a partial region in the housing (3) over at least two worms (1) engaging in each other. A section (9) is formed in the degassing opening (5) in the engaging region (11) of each worm (1). A gap (13) is formed between the section (9) and the at least one worm (1a) rotating in the region of the degassing opening (5) towards the section (9), the width of the gap decreasing in the direction of rotation of the worm (1a).

公开(公告)号：EP2195152A1

公开(公告)日：2010-06-16

申请号：EP08804573.7

申请日：2008-09-23

Applicant: BASF SE

Inventor： STAAL, Maarten ,  GÜNTHERBERG, Norbert ,  CHAROENSIRISOMBOON, Piyada ,  HEINEN, Hartmut ,  NIESSNER, Norbert ,  HECKMANN, Walter

IPC: B29C47/10 ,  C08K3/04 ,  C08K5/00 ,  C08L25/04

CPC classification number: C08K5/523 ,  B29C47/0004 ,  B29C47/0014 ,  B29C47/0021 ,  B29C47/1045 ,  B29C47/1081 ,  B29K2105/0005 ,  B29K2105/0026 ,  B29K2995/0016 ,  B29K2995/0059 ,  C08K3/04 ,  C08K5/0066

Abstract: The invention relates to methods for producing thermoplastic moulding compounds comprising A) 39 to 99% by weight of at least one thermoplastic polymer, B) 1 to 60% by weight of a flame retardant component comprising B1) an expandable graphite, and C) 0 to 60% by weight of further additives, wherein the percentages by weight are respectively related to the overall weight of the components A) to C) and together make up 100% by weight, by melting-mixing the components A), B) and, if present, C) in an extruder, wherein the extruder comprises along the conveying direction, in this sequence, at least one metering zone, a plasticating zone, an homogenizing zone and a discharge zone, wherein metering of the expandable graphite B1) into the extruder takes place at a point downstream of which - seen in the conveying direction - the extruder screw has essentially no shearing elements, and relates to thermoplastic moulding compounds which can be produced by these methods, to the use of said thermoplastic moulding compounds for producing fibres, films, mouldings and foams and also to these fibres, films, mouldings and foams themselves.

公开(公告)号：EP2297240A1

公开(公告)日：2011-03-23

申请号：EP09780122.9

申请日：2009-07-03

Applicant: BASF SE

Inventor： STAAL, Maarten ,  CHAROENSIRISOMBOON, Piyada ,  GÜNTHERBERG, Norbert ,  HEINEN, Hartmut ,  KEHR, Günter ,  PEPERS, Michel

IPC: C08K5/00 ,  C08L51/00 ,  C08L55/02 ,  C09K21/00

CPC classification number: C09K21/04 ,  C08K3/04 ,  C08K5/49 ,  C08K7/24 ,  C08L51/04 ,  C08L55/02 ,  C09K21/12 ,  C08L2666/02 ,  C08L2666/04

Abstract: The invention relates to thermoplastic molding compounds containing A) 55 to 98 wt.-% of at least one vinyl aromatic copolymer that is impact-modified with a particulate graft rubber, B) 1 to 44 wt.-% of a flame-retardant containing B1) an expandable graphite, B2) a flame-retardant compound containing a phosphor and B3) a polymer containing fluorine, C) 1 to 20 wt.-% of a non-particulate rubber containing polar groups, and D) 0 to 40 wt.-% of other additives, wherein each of the weight percents is determined relative to the total weight of components A) through D) and add up to a total of 100 wt.-%, and a method for producing said molding compounds, use of said molding compounds for the production of molded bodies, fibers, foams and films, as well as the molded bodies, fibers, foams and films obtained thereby.

公开(公告)号：EP2425194A1

公开(公告)日：2012-03-07

申请号：EP10715255.5

申请日：2010-04-27

Applicant: BASF SE

Inventor： GÜNTHERBERG, Norbert ,  BARDON, Rainer ,  HEINEN, Hartmut ,  SAUER, Michael ,  LEBER, Ludger ,  FISCHER, Wolfgang

IPC: F28D7/16 ,  F28F13/00 ,  F28F9/02 ,  C08F6/00

CPC classification number: F28D7/16 ,  B01D1/06 ,  C08F6/003 ,  F28F9/026 ,  F28F9/0282 ,  F28F13/003

Abstract: The invention relates to a shell and tube heat exchanger for removing volatile substances from a polymer solution by degasification, said shell and tube heat exchanger comprising a bundle of tubes arranged vertically and parallel to each other in a shell chamber through which a fluid heat-transfer medium flows, wherein the upper end of each tube is fixed in an upper tube sheet and the lower end of each tube is fixed in a lower tube sheet, and the polymer solution to be degassed flows through the tubes in the direction of gravity. An essential feature of the invention is that a multilayer woven wire fabric is attached to the top of the upper tube sheet, the finest meshed layer of said multilayer woven wire fabric having a mesh width of 50 μm to 1000 μm. The invention further relates to a method for removing volatile substances from a polymer solution by degasification in a shell and tube heat exchanger and to the use of said shell and tube heat exchanger.