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    HEAT INSULATING MATERIAL MAINLY CONSISTING OF SILICA AEROGEL CONTAINING PIGMENT
    12.
    发明专利
    HEAT INSULATING MATERIAL MAINLY CONSISTING OF SILICA AEROGEL CONTAINING PIGMENT 失效

    公开(公告)号：JPH02304299A

    公开(公告)日：1990-12-18

    申请号：JP11190490

    申请日：1990-05-01

    Applicant: BASF AG

    Inventor： BERUNARUDO BUORUFU ,  MANFUREETO MIIRUKE ,  GIYUNTAA ZEIBORUTO ,  BUERUNAA OSUTAATAAKU ,  YOTSUHEN FURITSUKE ,  ROORANTO KAPUSU

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

    Abstract: PURPOSE: To achieve a uniform pigment distribution to enhance mechanical strength by reacting water glass, an aqueous dispersion liquid of a pigment, and a strong acid together to form a silica hydrogel, removing ion constituents, and forming a heat insulating material through heating and vaporization. CONSTITUTION: A water glass aqueous solution of 10 to 20% SiO2 concentration, an aqueous dispersion liquid of a pigment with particle diameters of 0.01 to 20 μm, such as carbon black, titanium dioxide, and magnetite, and a strong acid such as sulfuric acid or formic acid are reacted together and agitated to form a pigment-containing silica hydrogen. In this case, the pigment has the characteristic of scattering, absorbing, or reflecting infrared radiation of wavelength 3-10 μm. Next, a silica hydrogel is washed with water to eliminate ion constituents sufficiently; then the water is expelled by an inert liquid and heating to supercritical conditions is effected and subsequently the liquid is removed from the solid by flash vaporization at supercritical temperature to form a heat insulating material based on a pigment-containing silica aerogel. Thus, a uniform pigment distribution can be obtained.

    ELECTROSTATIC TONER
    13.
    发明专利
    ELECTROSTATIC TONER 失效

    公开(公告)号：JPH0244370A

    公开(公告)日：1990-02-14

    申请号：JP15982689

    申请日：1989-06-23

    Applicant: BASF AG

    Inventor： WARUTAA BURAITOSHIYAFUTO ,  ERUUIN TSUEEFU ,  UDOO MAIYAA ,  GIYUNTAA ZEIBORUTO ,  HORUSUTO BURUDAA ,  RAINAA DEIRITSUKUUBURENTSUINGA

    IPC: C07D471/04 ,  C07D487/04 ,  G03G9/08 ,  G03G9/097

    Abstract: PURPOSE: To make a toner excellent in electrostatic chargeability by incorporating a specified compd. as an electric charge stabilizer into the toner. CONSTITUTION: This toner consists of a polymer binder having 40-200 deg.C softening temp. and 0.01-2wt.% electric charge stabilizer based on the amt. of this toner or further contains a coloring component and at least one kind of compd. represented by formula I is contained as the electric charge stabilizer. In the formula, R is Cl or methyl, preferably methyl, R is 4-22C alkyl, benzyl or 2-phenylethyl, preferably 10-22C, especially 12-22C alkyl, A is an equiv. anion, (n) is 0, 1 or 2, preferably O or 1, (m) is 1 or 2 and (r) is 1 or 2. This toner is excellent in electrostatic chargeability.

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