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51 records (took 0.023 seconds)

    47.
    发明专利
    未知

    公开(公告)号：PT678534E

    公开(公告)日：2000-12-29

    申请号：PT95105709

    申请日：1995-04-15

    Applicant: BASF AG

    Inventor： HUBERTUS KRONER DR ,  EKKEHARD JAHNS DR ,  MIELKE MANFRED

    IPC: B32B17/10 ,  C08F2/44 ,  C08F2/48 ,  C08F261/06 ,  C08F271/00 ,  B01J13/00 ,  C08F291/00 ,  C09K9/02

    Abstract: Gels for thermotropic sheets are claimed which are obtd. by light-radiation of a mixt. comprising (A) a non-crosslinked polymer (pref. 5-40 wt.%); (B) a radically-polymerisable monomer (pref. 1-30 wt.%); and (C) water and/or an org. solvent (pref. 30-94 wt.%). Pref. a photoinitiator is opt. also present. Polymer (A) has transparency changes in a 10 wt.% aq. and/or org. solvent soln. and is poly-N-vinylcaprolactam, a copolymer contg. at least 20 wt.% N-vinylcaprolactam, or a polyvinylether. Monomer (B) forms a 3-D network on light-irradiation and ether does not have thermotropic properties of the type specified above or has such properties at at least 20 degrees C above the switching region for polymer (A). (C) is water.

    48.
    发明专利
    未知

    公开(公告)号：DE59200506D1

    公开(公告)日：1994-10-20

    申请号：DE59200506

    申请日：1992-12-22

    Applicant: BASF AG

    Inventor： MIELKE MANFRED ,  SEYBOLD GUENTHER DR

    IPC: B28B3/00 ,  B01J13/00 ,  C01B33/157 ,  C01B33/158 ,  C03B20/00 ,  C03C17/32 ,  C03C27/12 ,  C04B35/14

    Abstract: Shaped part based on supercritically dried silica aerogel parts in the form of spherical particles having diameters of from 0.1 to 10 mm or of sheet-like pieces having thicknesses of from 2 to 30 mm and diameters of from 1 to 5 cm, characterized in that the formed part is produced by pressing at temperatures in the range from 500 to 1000 DEG C and pressures of from 0.5 to 10 bar, under a protective gas such as nitrogen, if required, and without the addition of binders.

    49.
    发明专利
    未知

    公开(公告)号：DE3914850A1

    公开(公告)日：1990-11-08

    申请号：DE3914850

    申请日：1989-05-05

    Applicant: BASF AG

    Inventor： WOLFF BERNARDO DR ,  MIELKE MANFRED ,  SEYBOLD GUENTHER DR ,  OSTERTAG WERNER DR ,  FRICKE JOCHEN PROF DR ,  CAPS ROLAND DR

    IPC: C01B33/155 ,  C01B33/158 ,  C04B14/06 ,  C04B30/00 ,  F16L59/00 ,  F16L59/02 ,  F16L59/08

    Abstract: The material is obtainable by a) reacting an aqueous dispersion of waterglass and a pigment with a strong acid and/or waterglass with a pigment-containing strong acid to give a pigment-containing silica hydrogel, the pigment being characterised in that it scatters, absorbs or reflects infrared radiation of wavelength 3 - 10 mu m, b) substantially freeing the pigment-containing silica hydrogel thus obtained from ionic constituents by washing out with water, c) displacing the water present in the hydrogel by means of a low- boiling liquid which is inert to the pigment-containing silica gel, d) heating the liquid-containing silica gel thus obtained with complete covering with the liquid to supercritical conditions and e) subsequently removing the liquid from the solid by flash evaporation at supercritical temperature.

    50.
    发明专利
    未知

    公开(公告)号：BR8706724A

    公开(公告)日：1989-07-11

    申请号：BR8706724

    申请日：1987-12-11

    Applicant: BASF AG

    Inventor： MAIER MANFRED ,  MIELKE MANFRED ,  HAUSER PETER

    IPC: B02C17/16 ,  B02C13/14

    Abstract: A drivable stirrer (4) is rotatably mounted in a stationary container (1) which is provided with an inlet (2) and an outlet (3), and in which grinding bodies (7) are located, the active surfaces (6) of the stirrer (4) being designed as drivers for the grinding bodies which are closely adjacent to the interior wall of the container. … …

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