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    METHOD FOR THE PRODUCTION OF A POLYAMIDE PIGMENTED WITH TITANIUM DIOXIDE
    11.
    发明专利
    METHOD FOR THE PRODUCTION OF A POLYAMIDE PIGMENTED WITH TITANIUM DIOXIDE 未知

    公开(公告)号：CA2503287A1

    公开(公告)日：2004-05-06

    申请号：CA2503287

    申请日：2003-10-18

    Applicant: BASF AG

    Inventor： PLACHETTA CHRISTOPH ,  HECKMANN MANFRED ,  HUENGER HANS-HARALD ,  WEISS ROBERT

    IPC: C08K3/00 ,  B01F3/12 ,  B01F7/00 ,  B01F7/16 ,  C08K3/22

    Abstract: Disclosed is a method for producing a polyamide containing titanium dioxide pigments. Said method is characterized by the fact that titanium dioxide pigments are dispersed in an initial mixture containing water and caprolacta m by means of a device comprising a dispersion chamber, a disk-shaped rotor th at is disposed inside said dispersion chamber, a stator that is provided with radial openings, is arranged within the dispersion zone of the dispersion chamber, and is connected to the rotor, a substance inlet located on each si de of the rotor, preferably with a respective axial duct section such that the two flows of substance are combined in the peripheral edge area of the rotor disk, and a product outlet which is placed on the outer edge of the dispersi on zone of the dispersion chamber, by feeding the titanium dioxide pigments to the dispersion chamber through one of said substance inlets while feeding th e initial mixture containing water and caprolactam to the dispersion chamber through the other of said substance inlets, whereby a product mixture containing water, caprolactam, and the used titanium dioxide pigment is obtained via the product outlet, and the product mixture is polymerized so a s to obtain a polyamide containing titanium dioxide pigments. Also disclosed a re polyamides obtained according to the inventive method and the use of such polyamides as a masterbatch.

    16.
    发明专利
    未知

    公开(公告)号：BR0315590A

    公开(公告)日：2005-09-06

    申请号：BR0315590

    申请日：2003-10-18

    Applicant: BASF AG

    Inventor： PLACHETTA CHRISTOPH ,  HECKMANN MANFRED ,  HUENGER HANS-HARALD ,  WEISS ROBERT

    IPC: C08K3/00 ,  B01F3/12 ,  B01F7/00 ,  B01F7/16 ,  C08K3/22

    Abstract: Disclosed is a method for producing a polyamide containing titanium dioxide pigments. Said method is characterized by the fact that titanium dioxide pigments are dispersed in an initial mixture containing water and caprolactam by means of a device comprising a dispersion chamber, a disk-shaped rotor that is disposed inside said dispersion chamber, a stator that is provided with radial openings, is arranged within the dispersion zone of the dispersion chamber, and is connected to the rotor, a substance inlet located on each side of the rotor, preferably with a respective axial duct section such that the two flows of substance are combined in the peripheral edge area of the rotor disk, and a product outlet which is placed on the outer edge of the dispersion zone of the dispersion chamber, by feeding the titanium dioxide pigments to the dispersion chamber through one of said substance inlets while feeding the initial mixture containing water and caprolactam to the dispersion chamber through the other of said substance inlets, whereby a product mixture containing water, caprolactam, and the used titanium dioxide pigment is obtained via the product outlet, and the product mixture is polymerized so as to obtain a polyamide containing titanium dioxide pigments. Also disclosed are polyamides obtained according to the inventive method and the use of such polyamides as a masterbatch.

    17.
    发明专利
    未知

    公开(公告)号：AT189468T

    公开(公告)日：2000-02-15

    申请号：AT95940222

    申请日：1995-11-21

    Applicant: BASF AG

    Inventor： HEITZ THOMAS ,  HEYM MANFRED ,  MUEHLBACH KLAUS ,  PLACHETTA CHRISTOPH

    IPC: C07C267/00 ,  C08K5/29 ,  C08L67/00 ,  C08L67/02

    Abstract: PCT No. PCT/EP95/04577 Sec. 371 Date May 30, 1997 Sec. 102(e) Date May 30, 1997 PCT Filed Nov. 21, 1995 PCT Pub. No. WO96/17011 PCT Pub. Date Jun. 6, 1996Thermoplastic molding compositions comprise A) from 20 to 99% by weight of a polyester, up to 90% by weight of which may be replaced by a polycarbonate or a polyamide, B) from 0.1 to 7% by weight of a carbodiimide of the formula I Formula I where R1 are identical or different radicals selected from the group consisting of -NCO, -NHCONHR5, -NHCONR5R6 and -NHCOOR7, where R5 , R6 are identical or different and are alkyl, cycloalkyl or aralkyl, R7 is the same as R5 or is alkoxy(poly)oxyalkylene and R2 , R3 are identical or different aliphatic radicals having from 1 to 18 carbon atoms or cycloaliphatic radicals having from 5 to 15 carbon atoms or aromatic radicals having from 6 to 15 carbon atoms, R4 are identical or different aliphatic radicals having from 2 to 20 carbon atoms or halogen or alkoxy, x is an integer from 0 to 4 and n is an integer from 0 to 10, C) from 0 to 75% by weight of conventional additives and processing aids, where the sum of the percentages by weight of components A) to C) is 100%.

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