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公开(公告)号：US3905946A
公开(公告)日：1975-09-16
申请号：US39224473
申请日：1973-08-28
Applicant: BASF AG
Inventor： NIESWANDT WERNER , HOERAUF WERNER , GUENTHER ERNST , KISSEL ERNST , NEUMANN ECKART , VALENTIN GUENTER
IPC: C08G69/00 , B01D11/02 , C07D201/12 , C08G69/46
CPC classification number: C08G69/46
Abstract: Continuous extraction of polylactam granules for the removal of monomers and/or oligomers therefrom by means of hot water flowing countercurrently in an extraction zone, which extraction zone is divided into subzones by at least one heating zone and the water is accelerated, at certain time intervals, cocurrently and countercurrently to the flow of granules.
Abstract translation: 连续提取多内酰胺颗粒以通过在提取区域中逆流流动的热水从其中除去单体和/或低聚物，该提取区通过至少一个加热区被分成次区域，并以特定的时间间隔加速水 与流动的流动并流逆流。
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公开(公告)号：DE3375591D1
公开(公告)日：1988-03-10
申请号：DE3375591
申请日：1983-02-07
Applicant: BASF AG
Inventor： STREHLER HUGO DR , VALENTIN GUENTER , HOERAUF WERNER DR
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公开(公告)号：AU525107B2
公开(公告)日：1982-10-21
申请号：AU3845878
申请日：1978-07-28
Applicant: BASF AG
Inventor： HOERAUF WERNER , VALENTIN GUENTER , KEGEL ROBERT , KUHN KELMUT
IPC: B29B9/00 , B29B7/00 , B29B9/06 , B29C47/00 , B29C47/78 , B29C48/30 , B29C48/76 , B29C48/92 , B29F3/03
Abstract: A process for removing volatile constituents which are evolved from plastic melts when extruding the latter and are drawn off together with the surrounding air. The volatile constituents are drawn off immediately as they are evolved by the plastic melt and the air containing such volatile constituents is heated immediately after entering the suction orifice, and an apparatus for carrying out this process.
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4.发明专利
公开(公告)号：DE3276483D1
公开(公告)日：1987-07-09
申请号：DE3276483
申请日：1982-06-30
Applicant: BASF AG
Inventor： STREHLER HUGO DR , KEGEL ROBERT , VALENTIN GUENTER , HOERAUF WERNER DR
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5.发明专利
公开(公告)号：DE3065809D1
公开(公告)日：1984-01-12
申请号：DE3065809
申请日：1980-05-02
Applicant: BASF AG
Inventor： ROTZOLL RUDI-HEINZ DR , MATTHIES PAUL DR , VALENTIN GUENTER , HOERAUF WERNER DR
Abstract: A process for the continuous preparation of polycaprolactam, which comprises polymerizing epsilon -caprolactam in a vertical tubular reactor through which the epsilon -caprolactam flows downward, wherein the epsilon -caprolactam is partially polymerized, at a nylon-forming temperature, in a mechanically mixed zone, the reaction mixture is circulated through a heat exchange zone in the lower part of the mechanically mixed reaction zone, and is polymerized further, in additional heat exchange zones, until the desired degree of polymerization is reached, and poly- epsilon -caprolactam is then discharged as a melt, and an apparatus for carrying out the process.
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Patent Agency Ranking
公开(公告)号：CA1066030A
公开(公告)日：1979-11-13
申请号：CA218338
申请日：1975-01-21
Applicant: BASF AG
Inventor： HOERAUF WERNER , GUENTHER ERNST , KISSEL ERNST , VALENTIN GUENTER , DIETRICH ERNST
Abstract: An extraction tube for the continuous removal of low molecular weight components of polylactam granules by means of hot water by the countercurrent principle of operation, the water being fed upwardly and the granules downwardly, the tube being provided with inlets and outlets for the granules and the water and exhibiting baffles within the tube, wherein there is provided, within the tube, a heat exchanger which (a) divides the tube into two sections bearing a ratio to each other of from 50:50 to 85:15 by volume, the smaller section being at the top of the tube, (b) exhibits ducts for the granules over the entire cross-section of the tube and (c) has upper inlet surfaces leading into each duct on the upper side of said heat exchanger facing the stream of granules, said inlet surfaces being inclined to taper inwardly toward the vertical ducts at an angle .beta. to the horizontal, this angle being equal to or greater than the angle of repose of the granules but less than 90.degree., further similar heat exchangers being provided beneath said heat exchanger if desired.
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公开(公告)号：DE2242641A1
公开(公告)日：1974-04-11
申请号：DE2242641
申请日：1972-08-30
Applicant: BASF AG
Inventor： KISSEL ERNST DIPL ING , NEUMANN ECKART DIPL ING , GUENTHER ERNST DIPL ING , VALENTIN GUENTER , HOERAUF WERNER DR
Abstract: The continuous countercurrent extraction of polylactam granules with hot water in an extraction zone for the removal of monomer and/or oligomers, the extraction zone being subdivided into subzones by at least one heating zone. The density of the extract-containing water differs by at least 0.0002 between the subzones.
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公开(公告)号：DE3361978D1
公开(公告)日：1986-03-13
申请号：DE3361978
申请日：1983-04-23
Applicant: BASF AG
Inventor： KUBE WOLFGANG , KEGEL ROBERT , VALENTIN GUENTER , STAUFER DIETER
IPC: B05B1/00 , B29B9/00 , B29B9/06 , B29C48/30 , B29C48/345 , B29C48/50 , C08G85/00 , D01D4/02 , D01D4/08 , F16K3/02 , B29C47/12
Abstract: A sealable discharge die for thermoplastics, comprising a housing, a dieplate which closes the latter except for perforations for discharge of the plastic melt in strands or filaments, and a perforated plate located immediately below or above this dieplate, one of the plates being slidable or rotatable and the perforated plate having orifices which can be brought into alignment with the perforations of the dieplate.
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公开(公告)号：DE3262979D1
公开(公告)日：1985-05-15
申请号：DE3262979
申请日：1982-07-07
Applicant: BASF AG
Inventor： STREHLER HUGO DR , HOERAUF WERNER DR , VALENTIN GUENTER
Abstract: Concentrates of from 20 to 50% by weight of titanium dioxide in polycaprolactam are produced by a process in which a 5-15% strength by weight aqueous suspension of titanium dioxide is metered into a solution of caprolactam in water at from 100 DEG to 150 DEG C. at the same rate at which water is distilled off, and after the water has been distilled off the resulting mixture is polymerized at from 240 DEG to 280 DEG C.
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公开(公告)号：DE3262150D1
公开(公告)日：1985-03-14
申请号：DE3262150
申请日：1982-08-26
Applicant: BASF AG
Inventor： STREHLER HUGO DR , HOERAUF WERNER DR , VALENTIN GUENTER , URBANEK FRIEDRICH DR
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