53.
    发明专利
    未知

    公开(公告)号:FI932426A0

    公开(公告)日:1993-05-27

    申请号:FI932426

    申请日:1993-05-27

    Applicant: BASF AG

    Abstract: Luster pigments consisting of flaky (plateletlike) metallic substrates with multiple coatings including A) a first, colourless or selectively absorbing layer (coating) of metal oxide, B) a second, non-selectively absorbing layer of carbon, metal and/or metal oxide, and C) if desired a third, colourless or selectively absorbing layer of metal oxide, and their production and use for colouring paints, printing inks, plastics, glasses, ceramic products and decorative cosmetic preparations.

    58.
    发明专利
    未知

    公开(公告)号:NO315599B1

    公开(公告)日:2003-09-29

    申请号:NO960820

    申请日:1996-02-28

    Applicant: BASF AG

    Abstract: PCT No. PCT/EP94/02822 Sec. 371 Date Feb. 29, 1996 Sec. 102(e) Date Feb. 29, 1996 PCT Filed Aug. 25, 1994 PCT Pub. No. WO95/06617 PCT Pub. Date Mar. 9, 1995Hydrophobic silica aerogels obtainable by reacting a waterglass solution with an acid at a pH of from 7.5 to 11, substantially removing ionic constituents from the resulting silica hydrogels by washing with water or dilute aqueous solutions of inorganic bases, while the pH of the hydrogels is kept in the range from 7.5 to 11, displacing the aqueous phase contained in the hydrogel by an alcohol, and subsequent supercritical drying of the resulting alcogels.

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