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公开(公告)号：DE3934934A1
公开(公告)日：1991-04-25
申请号：DE3934934
申请日：1989-10-20
Applicant: BASF AG
Inventor： PFISTER JUERGEN DR , SCHIESSL MICHAEL , NACHTRAB RAINER
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公开(公告)号：AT247554T
公开(公告)日：2003-09-15
申请号：AT99965418
申请日：1999-11-30
Applicant: BASF AG
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公开(公告)号：ES2047167T3
公开(公告)日：1994-02-16
申请号：ES90101785
申请日：1990-01-30
Applicant: BASF AG
Inventor： GOFFING FRIEDRICH DR , KROKER JOERG DR , NACHTRAB RAINER , THIELLE HEINO DR
Abstract: A continuous process for the preparation of aqueous, non-self-emulsifying polymer dispersions having small particles and a long shelf life on the basis of high-viscosity reaction resins without addition of solvents by means of a screw compounder which produces vigorous dispersion, the polymer dispersions being prepared in an intensive-shear part of the screw compounder, and the water/reaction resin ratio in this intensive-shear part being at or close to the phase-inversion point, and - the specific input of energy being 0.01 - 0.15 kWh/kg, - the residence time being 0.1 - 60 sec and - the shear gradient being 2000 - 20 000 sec .
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公开(公告)号：DE3918284A1
公开(公告)日：1989-12-21
申请号：DE3918284
申请日：1989-06-05
Applicant: BASF AG
Inventor： NACHTRAB RAINER , HOFFMANN HELMUT , STRIEGEL DIETER
IPC: B30B5/04
Abstract: Process for continuously metering small mass flows of pastes not capable of flowing in the unsheared state, these pastes being precomminuted, then compressed into a mass in the form of a paste panel without void inclusions and finally comminuted into small particles.
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公开(公告)号：DE59004064D1
公开(公告)日：1994-02-17
申请号：DE59004064
申请日：1990-01-30
Applicant: BASF AG
Inventor： GOFFING FRIEDRICH DR , KROKER JOERG DR , NACHTRAB RAINER , THIELLE HEINO DR
Abstract: A continuous process for the preparation of aqueous, non-self-emulsifying polymer dispersions having small particles and a long shelf life on the basis of high-viscosity reaction resins without addition of solvents by means of a screw compounder which produces vigorous dispersion, the polymer dispersions being prepared in an intensive-shear part of the screw compounder, and the water/reaction resin ratio in this intensive-shear part being at or close to the phase-inversion point, and - the specific input of energy being 0.01 - 0.15 kWh/kg, - the residence time being 0.1 - 60 sec and - the shear gradient being 2000 - 20 000 sec .
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Patent Agency Ranking
公开(公告)号：DE59001780D1
公开(公告)日：1993-07-22
申请号：DE59001780
申请日：1990-10-08
Applicant: BASF AG
Inventor： PFISTER JUERGEN DR , SCHIESSL MICHAEL , NACHTRAB RAINER
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公开(公告)号：DE3763200D1
公开(公告)日：1990-07-19
申请号：DE3763200
申请日：1987-07-24
Applicant: BASF AG
Inventor： ZETTLER HANS DIETER , THIELE HEINO DR , NACHTRAB RAINER , SAPPOK REINHARD DR
Abstract: 1. A continuous process for the preparation of a poorly flowing flushed color from an aqueous pigment suspension (press cake) and a water-immiscible organic liquid which may or may not contain a binder, with the aid of an intensive mixer, wherein the aqueous pigment suspension (press cake) and the water-immiscible organic liquid (binder) or the mixture of the aqueous pigment suspension (press cake) and water-immiscible organic liquid (binder) are or is continuously fed to an intensive mixing and shearing zone, from 3 to 10% by volume of the mixture present in the said zone being subjected to a shear gradient of from 500 to 7500 S**-1 at any time and the residence time under the action of this shear gradient being from 0.5 to 60 seconds, and the remaining 97-90% by volume of the mixture are subjected to shear gradients which are lower by a factor of 10 or more, and the water phase is separated off from the water/flushed color mixture leaving the intensive mixing and shearing zone.
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公开(公告)号：DE59906707D1
公开(公告)日：2003-09-25
申请号：DE59906707
申请日：1999-11-30
Applicant: BASF AG
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公开(公告)号：BR9915804A
公开(公告)日：2001-08-21
申请号：BR9915804
申请日：1999-11-30
Applicant: BASF AG
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公开(公告)号：CA2352860A1
公开(公告)日：2000-06-08
申请号：CA2352860
申请日：1999-11-30
Applicant: BASF AG
Inventor： KLEINKE ANDREAS , BARGHOORN PETER , CZAUDERNA BERNHARD , NACHTRAB RAINER , EHRMANN GERD , HEINEN HARTMUT , GRABOWSKI SVEN , LUDWIG ALEXANDER , GUNTHERBERG NORBERT , HOFMANN JURGEN
Abstract: The invention relates to the essentially salt-free coagulation of plastic or rubber dispersions using shearing forces. A device with at least one shearin g element (3) is used to this end. Said device has a stator (7) and a rotor (9 ) which is arranged inside said stator, the surfaces of the stator and the rot or that point towards each other each being flat. Alternatively, at least the rotor has a structure which is configured on its surface and which points in the direction of the stator from said surface. A gap (11) with a predetermin ed gap width is configured between the stator and the rotor. The method is carried out in such a way that the dispersion to be coagulated is guided through the gap (11) between the stator (7) and the rotor (9) and precipitat ed through the rotation of the rotor at a predetermined shear speed and with a predetermined shear deformation.
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