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1. 发明专利

DE59106529D1 未知
公开(公告)号：DE59106529D1
公开(公告)日：1995-10-26
申请号：DE59106529
申请日：1991-10-19
申请人： BASF MAGNETICS GMBH
发明人： SCHROER WOLF-DIETER DR , VASS ATTILA DR , SAUTER JUERGEN , SCHMIDT JUERGEN , KUNTZ GUENTHER
IPC分类号： G11B5/708 , C09D5/23 , G11B5/70 , G11B5/702 , G11B5/712 , G11B5/714 , G11B5/73 , G11B5/842
摘要： A magnetic dispersion, consisting of fine particles of iron powder or iron alloy powder having a BET value of more than 35 m /g, which powder is dispersed in a polymeric binder and an organic solvent and has markedly improved filterability, is obtained by using certain low-molecular phosphoric acid esters of the general formula I or II in combination with a dispersion-active compound which contains at least one polar group capable of absorption on the magnetic pigment. The polar group of the dispersion-active compound can be an acidic or alkaline or amphoteric group, a group which is capable of forming hydrogen bonds, or a polarisable group. The dispersion-active compound can be a polycondensate, a polyaddition product or a copolymer, which can also be used in the magnetic dispersion in combination with other conventional polymeric binders.

2. 发明专利

DE4040024A1 Continuous carousel filter - with auto discharge and replacement of filter candles, useful for solvent recovery from dispersions 未知
公开(公告)号：DE4040024A1
公开(公告)日：1992-06-17
申请号：DE4040024
申请日：1990-12-14
申请人： BASF MAGNETICS GMBH
发明人： KUNTZ GUENTHER , BIRNER JOSEF
IPC分类号： B01D29/11
摘要： Filter for purification of liquid dispersions, with automatically charging, pressurised filter candles, and having feed, processing, and discharge stations, comprises (i) a rotatable cylindrical disk (1), with stationary bottom plates, (2,3) and several through penetrating bores (5,6,7,8,9,10,11,12) arranged internally adjacent to the outer edge of the cylindrical disk (1), and several openings arranged in axial opposed fashion around the periphery of the bottom plates (2,3); (ii) a feed station (13) for introducing filter candles (19) from a magazine, axially through an aperture (21) in bottom plate (3), into a bore (5) of the cylindrical disk (1); (iii) a deaeration station (14) to displace air by introduction of liquid under pressure via line (20) and expelling air via corresponding line (20') (iv) an operating station (15) where the impure liquid is fed via a manifold channel (4) in the bottom plate (3) simultaneously, inner pressure, to at least two of the candles, and purified liquid leaves via manifold channel (4') in bottom plate (2), (v) an expression and dying station (16) to axially compress each of the filter candles, expelling residual liquid and dying with a purge gas, (vi) a rejection station to axially press out the compressed filter candle in a direction opposite to the liquid fill direction, (vii) a cleaning station (18) to brush clean (28) the walls of the bores. USE/ADVANTAGE - Maximising continuous solvent recovery from dispersions containing magnetic particles, pigments and polymeric binders, and minimising vapour emissions and pressure drop.

3. 发明专利

DE4234759A1 Mill for finely grinding down dispersions of solids - has revolving shaft holding grinding plates of e.g. steel plus e.g. polymer with plastic brushes to prevent clogging when run continuously 未知
公开(公告)号：DE4234759A1
公开(公告)日：1994-04-21
申请号：DE4234759
申请日：1992-10-15
申请人： BASF MAGNETICS GMBH
发明人： KUNTZ GUENTHER , GRUBER GERTRAUD , GANZ HERBERT , SCHMIDT JUERGEN DIPL PHYS
IPC分类号： B02C17/16 , B02C17/18
摘要： A mill for very finely grinding down a dispersion of solids or mixed solids has a cylindrical container for the material concerned .This contains a revolving shaft attached to a number of grinding plates which also act as stirrers. Dispersion is pumped in near one end and removed from the other end through a filter screen. The filter used rotates along the i.d. of the container, leaving a gap of width 0.05-0.15 mm; at least the topmost cylindrical grinding plate by the filter is made of metal, ceramics or a hard plastic material and it has brush-like fares on its circumference which extend to the filter. Grinding particles used have a dia. less than 0.2 mm but greater than two perforations in the filter; the mill is filled with them to 60-95% of its vol. as measured by the total vol. of the dispersion and grinding particles. At least the topmost grinding plate and its fibres are preferably made of polyamides or polyethylene. Ceramic grinding particles are pref. made of up to 60-80% Zr oxide and 20-40% silica. ADVANTAGE - The mill uses finest grading particles so finely ground pigments (partic. in magnetic dispersions) are not destroyed and can be run continuously without clogging the filter.

4. 发明专利

DE19612771A1 未知
公开(公告)号：DE19612771A1
公开(公告)日：1997-10-02
申请号：DE19612771
申请日：1996-03-29
申请人： BASF MAGNETICS GMBH
发明人： KUNTZ GUENTHER , STICH HELMUT , VOIT JOHANN DR , ZWISLER BARBARA
IPC分类号： B24D11/00 , C08J5/14 , B32B3/30 , B32B27/08 , C09K3/14

5. 发明专利

DE59301127D1 未知
公开(公告)号：DE59301127D1
公开(公告)日：1996-01-25
申请号：DE59301127
申请日：1993-02-03
申请人： BASF MAGNETICS GMBH
发明人： SCHWARZ LOTHAR , KUNTZ GUENTHER
IPC分类号： B01D29/50 , B01D27/00 , B01D27/08 , B01D29/00 , B01D29/11
摘要： A filtering device is described, in which a multiplicity of filter elements (1) are situated in the interior of a filter housing (7), which filter elements hang from the filter lid (3), the interior bore holes of the filter cartridges being connected to the outlet connector (6) via a channel system. At the wall of the filter housing (7) there lies a film bag (2), the top end of which is fused to an O-ring (4), which is seated in an annular groove on the flange of the filter housing, the diameters of O-ring and film bag being identical. Furthermore, between the film bag (2) and interior wall of the filter housing and in the interior of the filter cartridges are provided volume displacement bodies (16, 17, 25), which extend in axial direction over the entire length of the filter housing. When changing the filter, these volume displacement bodies are for example inflated with compressed air, as a result of which the remaining filtrate volume is considerably reduced, so that less dispersion loss occurs. The arrangement described permits the filter to be changed easily and provides advantages in the disposal of residues.

6. 发明专利

DE4204354A1 未知
公开(公告)号：DE4204354A1
公开(公告)日：1993-08-19
申请号：DE4204354
申请日：1992-02-14
申请人： BASF MAGNETICS GMBH
发明人： SCHWARZ LOTHAR , KUNTZ GUENTHER
IPC分类号： B01D29/50 , B01D27/00 , B01D27/08 , B01D29/00 , B01D29/11
摘要： A filtering device is described, in which a multiplicity of filter elements (1) are situated in the interior of a filter housing (7), which filter elements hang from the filter lid (3), the interior bore holes of the filter cartridges being connected to the outlet connector (6) via a channel system. At the wall of the filter housing (7) there lies a film bag (2), the top end of which is fused to an O-ring (4), which is seated in an annular groove on the flange of the filter housing, the diameters of O-ring and film bag being identical. Furthermore, between the film bag (2) and interior wall of the filter housing and in the interior of the filter cartridges are provided volume displacement bodies (16, 17, 25), which extend in axial direction over the entire length of the filter housing. When changing the filter, these volume displacement bodies are for example inflated with compressed air, as a result of which the remaining filtrate volume is considerably reduced, so that less dispersion loss occurs. The arrangement described permits the filter to be changed easily and provides advantages in the disposal of residues.

7. 发明专利

DE4237089A1 Device for cleaning pine conduits - involves several brush cleaning bodies fed through with prod. flow. 未知
公开(公告)号：DE4237089A1
公开(公告)日：1994-05-05
申请号：DE4237089
申请日：1992-11-03
申请人： BASF MAGNETICS GMBH
发明人： KUNTZ GUENTHER , BECK CLEMENS , LITZEL WOLFGANG , GANZ HERBERT , SILBERNAGL GEORG
IPC分类号： B08B9/04 , B08B9/055 , A46B7/06
摘要： A ring conduit (1) carries fluid from a storage vessel (2) via a pump (3) and a valve (4) to the feed point (17) and one or more user branch conduits (5-8) are introduced in the circuit. Excess fluid is fed back again to the storage vessel (2) via a first or a second back flow conduit (1,6 16'). The ring conduit (1) is connected via two further valves both to the storage vessel and to the pump. USE/ADVANTAGE - To clean pipe conduits. The cleaning bodies remain continuously in the conduit system without reversal of direction, no special cleaning fluid is required, the system does not have to be opened, and there is no emission of solvent vapour into the atmosphere.

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