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    3.
    发明专利
    未知

    公开(公告)号：DE50008862D1

    公开(公告)日：2005-01-05

    申请号：DE50008862

    申请日：2000-10-17

    Applicant: BASF AG

    Inventor： OEPEN SABINE ,  NIESSNER NORBERT ,  BREULMANN MICHAEL ,  GUENTHERBERG NORBERT ,  DUIJZINGS WIL

    IPC: C08F279/04 ,  C08K5/54 ,  C08L9/02 ,  C08L51/04 ,  C08L55/02

    Abstract: Undesirable changes in shade brought about by low temperatures (Cold Stress Whitening) in impact-modified thermoplastic molding compositions F which comprise at least one elastomeric graft polymer A and at least one thermoplastic polymer B are reduced by adding from 10 to 200 ppm, based on the molding compositions F, of at least one polyorganosiloxane S to the impact-modified thermoplastic molding composition F.

    4.
    发明专利
    未知

    公开(公告)号：DE50103625D1

    公开(公告)日：2004-10-21

    申请号：DE50103625

    申请日：2001-03-14

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  BREULMANN MICHAEL ,  OEPEN SABINE ,  DUIJZINGS WIL ,  NIESSNER NORBERT

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F36/00 ,  C08F36/04 ,  C08F36/06

    Abstract: A process for the production of rubber particles containing 80-100 wt.% of a conjugated diene monomer and 0-20 wt.% of a monoethylenically unsaturated comonomer comprises emulsion polymerization in the presence of an emulsifier and an initiator whereby the monomers are added either in polymerized form as a seed latex or in monomeric form via subsequent in-situ polymerization to form a seed latex. A process for the production of rubber particles (I) containing in polymerized form (A) 80-100 wt.% of at least one conjugated diene monomer and (B) 0-20 wt.% of at least one monoethylenically unsaturated comonomer, comprises emulsion polymerization in the presence of an emulsifier and an initiator whereby: (1) a mixture (M1) comprising (M1a) 20-100 wt.% water and (M1b) 0.1-100 wt.% emulsifier is added; (2) simultaneously or thereafter a mixture (M2) comprising (M2a) 90-100 wt.% of styrene, alpha -methylstyrene, butadiene, n-butylacrylate, methylmethacrylate and/or acrylonitrile and (M2b) 0-10 wt.% of at least one copolymerizable monomer whereby monomers (M2a) and (M2b) are added either in polymerized form as a seed latex or in monomeric form via subsequent in-situ polymerization to form a seed latex, or as a mixture of polymerized and monomeric forms, whereby the seed-latex polymer has an average mol. wt. of greater than 2000; (3) the polymerization of the resulting mixture is initiated in the presence of the polymerization initiator at 5-95 [deg]C; (4) simultaneously or thereafter a mixture (M3) comprising (M3a) 0-100 wt.% comonomer (B) (wrt (B)) and (M3b) 0-25 wt.% diene monomer (A) (wrt (A)) is added; (5) simultaneously or thereafter a mixture (M4) comprising (M4a) the residual 75-100 wt.% (A) (wrt (A)) and (M4b) the residual 0-100 wt.% (B) (wrt (B)); and (6) polymerization is carried out to a conversion of 90-95 (wrt the total amount of monomers) whereby the residual 0-80 wt.% of the emulsion water and the residual 0-99.9 wt.% of the emulsifier are added individually or separately at one or more steps (2)-(5). An independent claim is included for the resulting rubber particles (I).

    6.
    发明专利
    未知

    公开(公告)号：DE50104019D1

    公开(公告)日：2004-11-11

    申请号：DE50104019

    申请日：2001-07-13

    Applicant: BASF AG

    Inventor： DUIJZINGS WIL ,  OEPEN SABINE ,  NIESSNER NORBERT ,  BREULMANN MICHAEL ,  KORB HARDY

    IPC: C08C1/07

    Abstract: A process for the agglomeration of at least one rubber (A), dispersed in an aqueous phase, by the addition of a dispersion of at least one agglomerating polymer (B) in aqueous phase, in which the agglomerating polymer B used is one containing substantially no free acid groups and the agglomeration is carried out in the presence of at least one basic electrolyte.

    7.
    发明专利
    未知

    公开(公告)号：AT276285T

    公开(公告)日：2004-10-15

    申请号：AT01925444

    申请日：2001-03-14

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  BREULMANN MICHAEL ,  OEPEN SABINE ,  DUIJZINGS WIL ,  NIESSNER NORBERT

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F36/00 ,  C08F36/04 ,  C08F36/06

    Abstract: A process for the production of rubber particles containing 80-100 wt.% of a conjugated diene monomer and 0-20 wt.% of a monoethylenically unsaturated comonomer comprises emulsion polymerization in the presence of an emulsifier and an initiator whereby the monomers are added either in polymerized form as a seed latex or in monomeric form via subsequent in-situ polymerization to form a seed latex. A process for the production of rubber particles (I) containing in polymerized form (A) 80-100 wt.% of at least one conjugated diene monomer and (B) 0-20 wt.% of at least one monoethylenically unsaturated comonomer, comprises emulsion polymerization in the presence of an emulsifier and an initiator whereby: (1) a mixture (M1) comprising (M1a) 20-100 wt.% water and (M1b) 0.1-100 wt.% emulsifier is added; (2) simultaneously or thereafter a mixture (M2) comprising (M2a) 90-100 wt.% of styrene, alpha -methylstyrene, butadiene, n-butylacrylate, methylmethacrylate and/or acrylonitrile and (M2b) 0-10 wt.% of at least one copolymerizable monomer whereby monomers (M2a) and (M2b) are added either in polymerized form as a seed latex or in monomeric form via subsequent in-situ polymerization to form a seed latex, or as a mixture of polymerized and monomeric forms, whereby the seed-latex polymer has an average mol. wt. of greater than 2000; (3) the polymerization of the resulting mixture is initiated in the presence of the polymerization initiator at 5-95 [deg]C; (4) simultaneously or thereafter a mixture (M3) comprising (M3a) 0-100 wt.% comonomer (B) (wrt (B)) and (M3b) 0-25 wt.% diene monomer (A) (wrt (A)) is added; (5) simultaneously or thereafter a mixture (M4) comprising (M4a) the residual 75-100 wt.% (A) (wrt (A)) and (M4b) the residual 0-100 wt.% (B) (wrt (B)); and (6) polymerization is carried out to a conversion of 90-95 (wrt the total amount of monomers) whereby the residual 0-80 wt.% of the emulsion water and the residual 0-99.9 wt.% of the emulsifier are added individually or separately at one or more steps (2)-(5). An independent claim is included for the resulting rubber particles (I).

    8.
    发明专利
    未知

    公开(公告)号：DE10021565A1

    公开(公告)日：2001-11-22

    申请号：DE10021565

    申请日：2000-05-03

    Applicant: BASF AG

    Inventor： BREULMANN MICHAEL ,  OEPEN SABINE ,  NIESNER NORBERT ,  GUENTHERBERG NORBERT ,  DUIJZINGS WIL ,  MCKEE GRAHAM EDMUND ,  ROSSMANITH PETER

    IPC: C08F265/04 ,  C08F279/02 ,  C08F279/04 ,  C08F291/02 ,  C08L25/12 ,  C08L51/04 ,  C08L55/02 ,  C08F279/06 ,  C08J5/18

    Abstract: The graft copolymer made froma1: from 10 to 90% by weight of a particulate graft base A1, made from a particulate emulsion polymer with a glass transition temperature below 0° C. made froma11: from 70 to 100% by weight of butadiene or of at least one C1-8-alkyl acrylate, or of mixtures of these, as component A11,a12: from 0 to 20% by weight of at least one polyfunctional crosslinking monomer, as component A12,a13: from 0 to 30% by weight of other copolymerizable monomers, as component A13, the total amount of these being 100% by weight,a2: from 10 to 90% by weight of a graft A2 made from the following monomers, the amounts being based on A2,a21: from 60 to 100% by weight of at least one vinylaromatic monomer, or of a (meth)acrylic ester or of mixtures of these, as component A21, anda22: from 0 to 40% by weight of at least one ethylenically unsaturated monomer, as component A22,has a median particle diameter of from 130 to 500 nm and has polymodal particle size distribution in which less than 40% by weight of the particles are present in any particle size range of width 50 nm.

    PROCEDIMIENTO PARA LA AGLOMERACION DE CAUCHOS DISPERSADOS.
    10.
    发明专利
    PROCEDIMIENTO PARA LA AGLOMERACION DE CAUCHOS DISPERSADOS. 未知

    公开(公告)号：ES2228941T3

    公开(公告)日：2005-04-16

    申请号：ES01965130

    申请日：2001-07-13

    Applicant: BASF AG

    Inventor： DUIJZINGS WIL ,  OEPEN SABINE ,  NIESSNER NORBERT ,  BREULMANN MICHAEL ,  KORB HARDY

    IPC: C08C1/07

    Abstract: Procedimiento para la aglomeración de al menos un caucho dispersado en fase acuosa (A) mediante adición de una dispersión de al menos un polímero de aglomeración (B) en fase acuosa, caracterizado porque se emplea como B un polímero de aglomeración, que no contiene esencialmente grupos ácidos libres, y se lleva a cabo la aglomeración en presencia de al menos un electrólito básico, empleándose como electrólito básico un hidróxido orgánico o inorgánico.

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