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公开(公告)号：DK1102810T3
公开(公告)日：2002-11-25
申请号：DK99939785
申请日：1999-08-06
Applicant: BASF AG
Inventor： ANDERLIK RAINER , KREMESKOETTER JENS , MAILAHN ELMAR , GUENTHERBERG NORBERT , ITTEMANN PETER , HOFMANN JUERGEN , SACK HEINRICH
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公开(公告)号：DE59706634D1
公开(公告)日：2002-04-18
申请号：DE59706634
申请日：1997-12-23
Applicant: BASF AG
Inventor： GUENTHERBERG NORBERT , HOFMANN JUERGEN
IPC: B01F25/64 , C08F6/22 , C08F265/04 , C08F279/02 , B01F5/16
Abstract: A process for the continuous coagulation of aqueous dispersions of graft rubbers suitable for toughening thermoplastics is described. In the process, dispersions are transported through an apparatus having at least one shear element with a slotted stator and a rotating of the rotor within the stator, so that said dispersions are passed radially from the inside to the outside as a result of the rotation of the rotor in the shear element and, during or after passage through the slots of the rotor and stator, are subjected to such strong shearing that they coagulate, resulting in graft rubber coagulums which can be readily worked up even at a solids content of more than 50% by weight of elastomers.
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公开(公告)号：DE10050023A1
公开(公告)日：2002-04-11
申请号：DE10050023
申请日：2000-10-06
Applicant: BASF AG
Inventor： GUENTHERBERG NORBERT , HOFMANN JUERGEN , MAILAHN ELMAR , OHLIG HILMAR
IPC: B29B7/38 , B29B7/82 , B29C47/10 , B29C48/38 , B29B7/46 , B29B7/88 , B29C47/38 , B01F7/08 , C08J3/20 , C08J5/18
Abstract: The invention relates to a mixing device comprising at least one screw injection moulding machine (S1) and a screw injection moulding machine (S2). (S1) is provided with heating devices at least in the plasticising and homogenising section, and the outlet pertaining to (S2) is connected to the screw cylinder of (S1) in the plasticising or homogenising section pertaining to (S1). It is essential that (S1) and (S2) are connected by means of a connecting device provided with a cooling device which acts up to the inner wall of the screw cylinder of (S1). The invention also relates to methods for producing thermoplastically processable moulding materials, especially additive batches, consisting of at least one thermoplastic component (K1) and at least one component (K2). The melting or decomposition temperature (TS ) of (K2) is at least ca. 50 DEG C lower than the temperature (TW ) which limits the lower end of the thermoforming range of (K1), (K2) only largely being melted after coming into contact with (K1).
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公开(公告)号：DE10040435A1
公开(公告)日：2002-02-28
申请号：DE10040435
申请日：2000-08-18
Applicant: BASF AG
Inventor： NIESNER NORBERT , BREULMANN MICHAEL , GUENTHERBERG NORBERT , MC KEE GRAHAM EDMUND , OEPEN SABINE , DUIJZINGS WIL
IPC: C08F2/24 , C08F236/06 , C08F220/18 , C08J5/00
Abstract: Production of elastomer particles by emulsion polymerization of ethylenically unsaturated monomers, comprises using an emulsifier with a critical micelle concentration (cmc) of at least 10 mole/liter. Production of elastomer particles comprises: (a) emulsifying ethylenically unsaturated monomers, the homo- or copolymers of which have a glass transition temperature (Tg) below 0 deg C, in water under shearing action in the presence of an emulsifier with a cmc of at least 10 mole/liter and a water-soluble initiator; and (b) heating the emulsion to initiate polymerization, optionally with addition of further monomers for grafting.
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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).
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Patent Agency Ranking
公开(公告)号：AT203257T
公开(公告)日：2001-08-15
申请号：AT97942004
申请日：1997-09-09
Applicant: BASF AG
Inventor： GUENTHERBERG NORBERT , WEBER MARTIN , KNOLL KONRAD , LINDENSCHMIDT GERHARD
Abstract: Thermoplastic molding compositions comprisingA) a graft polymer comprising1) an elastomeric graft core, obtainable by copolymerization of one or more C1-C10-alkyl acrylates, and a monomer with crosslinking effect, and2) a graft shell comprising a styrene compound or a C1-C8-alkyl acrylate or methacrylate, or a mixture of the styrene compound and the C1-C8-alkyl acrylate or methacrylate, andB) a thermoplastic polymer comprisingC) an elastomeric block copolymer in which all or virtually all of the olefinic double bonds have been hydrogenated, comprising at least one block A, which forms a hard phase and contains, in its polymer chain, units of a vinylaromatic monomer, and/or a block B, which forms a first elastomeric (soft) phase and contains diene monomers, and at least one elastomeric block B/A, which forms a soft phase, and contains, randomly in its polymer chain, units of both a vinylaromatic monomer and a diene, where the glass transition temperature Tg of the block A is above 25° C. and that of the block B/A is below 25° C. and the phase-volume ratio of block A to block B/A is chosen so that the proportion of the hard phase in the entire block copolymer is from 1 to 40% by volume and the proportion by weight of the diene is less than 50% by weight.
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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
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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公开(公告)号：DE59702903D1
公开(公告)日：2001-02-15
申请号：DE59702903
申请日：1997-09-12
Applicant: BASF AG
Inventor： ITTEMANN PETER , NEUMANN RAINER , SEIBRING JOACHIM , ROSENAU BERNHARD , KOETTING MANFRED , GINSS CHRISTOPHE , GUENTHERBERG NORBERT , MEYER CHRISTIAN
Abstract: Thermoplastic molding materials ofA) from 72 to 88.5% by weight of a thermoplastic styrene or alpha-methylstyrene polymer or copolymer,B) from 10 to 20% by weight of a first graft polymer having an average particle diameter d50 from 400 to 600 nm, having an n-butyl acrylate based rubber-elastic graft core, and a styrene or alpha-methylstyrene (co)polymer graft shell,C) from 1.5 to 8% by weight of a second graft polymer having a bimodal particle size distribution, the average particle diameter d50 being from 25 to 200 nm and from 350 to 550 nm, having a butadiene or isoprene polymer or copolymer based rubber-elastic graft core, and a styrene or alpha-methylstyrene (co)polymer graft shell,D) from 0 to 50% by weight of conventional additives,where the graft polymers B) and C) constitute from 11.5 to 25% by weight of components A), B) and C), and components A) to D) amount to 100% by weight.
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公开(公告)号：CZ107699A3
公开(公告)日：2000-09-13
申请号：CZ107699
申请日：1997-09-12
Applicant: BASF AG
Inventor： GUENTHERBERG NORBERT , HOFMANN JUERGEN , MAILAHN ELMAR , OHLIG HILMAR , CZAUDERNA BERNHARD , GRABOWSKI SVEN , BUS KLAUS
IPC: B29B7/48 , B29B7/58 , B29B13/06 , B29C48/40 , B29C48/67 , B29C48/76 , B29C63/00 , C08J3/20 , C08J3/205 , C08J5/18 , C08L21/00 , C08L51/04 , B29C47/40 , B29C47/64 , B29C47/76
Abstract: PCT No. PCT/EP97/05000 Sec. 371 Date Mar. 25, 1999 Sec. 102(e) Date Mar. 25, 1999 PCT Filed Sep. 12, 1997 PCT Pub. No. WO98/13412 PCT Pub. Date Apr. 2, 1998A process for preparing thermoplastics or polymer blends comprising (A) from 5 to 95% of a water-moist elastomer component containing up to 60% of residual water, (B) from 5 to 95% of a thermoplastic polymer, (C) from 0 to 95% of a further polymer, and (D) from 0 to 70% of additives, said process comprising mixing the components A to D in an extruder with mechanical dewatering of component A, wherein the extruder has at least two rotating screws and, in the conveying direction, is essentially composed of a metering section into which component A is fed, a squeeze section which serves for dewatering component A and contains a retarding element and an associated dewatering orifice which is present upstream of the retarding element by a distance corresponding to at least one screw diameter, a feed section in which the thermoplastic polymer B is introduced as a melt into the extruder, a plastication section with mixing or kneading elements, a devolatilization section with an orifice and in which the remaining water is removed as steam, and a discharge zone.
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公开(公告)号：DE19855459A1
公开(公告)日：2000-06-08
申请号：DE19855459
申请日：1998-12-01
Applicant: BASF AG
Inventor： GUENTHERBERG NORBERT , HOFMANN JUERGEN , LUDWIG ALEXANDER , HEINEN HARTMUT , EHRMANN GERD , BARGHOORN PETER , KLEINKE ANDREAS
Abstract: The invention relates to the essentially salt-free coagulation of plastic or rubber dispersions using shearing forces. A device with at least one shearing element (3) is used to this end. Said device has a stator (7) and a rotor (9) which is arranged inside said stator, the surfaces of the stator and the rotor that point towards each other each being flat. Alternatively, at least the rotor has a structure which is configured on its surface and which points in the direction of the stator from said surface. A gap (11) with a predetermined gap width is configured between the stator and the rotor. The method is carried out in such a way that the dispersion to be coagulated is guided through the gap (11) between the stator (7) and the rotor (9) and precipitated through the rotation of the rotor at a predetermined shear speed and with a predetermined shear deformation.
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