51.
    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

    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.

    54.
    发明专利
    未知

    公开(公告)号:DE4038784A1

    公开(公告)日:1992-06-11

    申请号:DE4038784

    申请日:1990-12-05

    Applicant: BASF AG

    Abstract: A composite foam of low thermal conductivity comprises a) 20-80% by volume of silica aerogel particles having a mean diameter of from 0.1 to 20 mm and a density of from 0.08 to 0.40 g/cm3, b) 20-80% by volume of a styrene polymer foam which surrounds the particles of component a) and binds them to one another and has a density of from 0.01 to 0.15 g/cm3, and, if desired, c) conventional additives in effective amounts.

    55.
    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

    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.

    Cationic isothiazole azo dyestuffs
    57.
    发明专利

    公开(公告)号:DE3514368A1

    公开(公告)日:1986-10-23

    申请号:DE3514368

    申请日:1985-04-20

    Applicant: BASF AG

    Abstract: The invention relates to compounds of the general formula I in which D is a quaternary heterocyclic radical, A is an anion, R and R , independently of one another, are optionally substituted alkyl, alkenyl or cycloalkyl, and moreover one of the radicals is also hydrogen or optionally substituted aryl, R and R , together with the nitrogen, are a heterocyclic ring, R is nitro, cyano, alkylsulphonyl, carboxylic ester or optionally substituted carbamoyl or sulfamoyl and R is hydrogen or optionally substituted alkyl, cycloalkyl, aryl or hetaryl. The dyestuffs according to the invention are very highly suitable for dyeing anionically modified fibres.

    Reactive dyes
    59.
    发明专利

    公开(公告)号:DE3325371A1

    公开(公告)日:1985-01-24

    申请号:DE3325371

    申请日:1983-07-14

    Applicant: BASF AG

    Abstract: The invention relates to compounds of the general formula I in which D is a phenyl or naphthyl radical, which contains a sulpho group and which is optionally further substituted, n is the number 1 or 2, R is hydrogen or methyl, R is optionally substituted phenyl free sulpho groups which is of R is hydrogen, methyl, methoxy, chlorine or sulfo and X for n = 1 is at least one fibre-reactive radical of the triazine, pyrimidine, pyridazone, quinoxaline, quinazoline, phthalazine, thiazole, benzothiazole, acrylic, halopropionyl or haloacetyl, series and for n = 2 is a radical of the formula -X -B-X - where X and X are reactive radicals and B is a bridge member. The compounds according to the invention are very highly suitable for the dyeing of textile material containing hydroxyl groups.

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