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27 records (took 0.023 seconds)

    21.
    发明专利
    未知

    公开(公告)号：AT278713T

    公开(公告)日：2004-10-15

    申请号：AT01965130

    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.

    24.
    发明专利
    未知

    公开(公告)号：DE10037280A1

    公开(公告)日：2002-02-07

    申请号：DE10037280

    申请日：2000-07-28

    Applicant: BASF AG

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

    IPC: C08C1/07 ,  C08J3/16 ,  C08L21/02 ,  C08L51/04 ,  C08J5/18

    Abstract: The invention relates to a method for agglomerizing at least one dispersed rubber (A) in an aqueous phase by adding a dispersion of at least one agglomeration polymer (B) in the aqueous phase. The invention is characterised by using an agglomeration polymer as B, containing essentially no free acid groups and by carrying out the agglomerization in the presence of at least one basic electrolyte.

    Production of rubber particles containing conjugated diene and monoethylenically unsaturated comonomer, useful for production of thermoplastic molded articles, comprises use of seed latex
    26.
    发明专利
    Production of rubber particles containing conjugated diene and monoethylenically unsaturated comonomer, useful for production of thermoplastic molded articles, comprises use of seed latex 未知

    公开(公告)号：DE10013733A1

    公开(公告)日：2001-09-27

    申请号：DE10013733

    申请日：2000-03-21

    Applicant: BASF AG

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

    IPC: C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F36/00 ,  C08F36/04 ,  C08F36/06 ,  C08F236/04 ,  C08F212/08 ,  C08F220/18 ,  C08F220/44

    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).

    27.
    发明专利
    未知

    公开(公告)号：DE19951648A1

    公开(公告)日：2001-05-03

    申请号：DE19951648

    申请日：1999-10-27

    Applicant: BASF AG

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

    IPC: C08F279/04 ,  C08K5/54 ,  C08L9/02 ,  C08L51/04 ,  C08L55/02 ,  C08L83/04

    Abstract: The invention relates to a method for reducing undesired coloration changes (Cold Stress Whitening) in impact-resistant thermoplastic moulding compounds (F), caused by low temperatures. Said moulding compounds contain at least one elastomeric graft polymer (A) and at least one thermoplastic polymer (B). According to the invention, 10 to 200 ppm of at least one polyorganosiloxane (S), based upon the moulding compounds (F) is added to said impact-resistant thermoplastic moulding materials (F).

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