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    1.
    发明专利
    未知

    公开(公告)号：DE3414119A1

    公开(公告)日：1985-10-24

    申请号：DE3414119

    申请日：1984-04-14

    Applicant: BASF AG

    Inventor： MITULLA KONRAD DR ,  HAMBRECHT JUERGEN DR ,  ECHTE ADOLF DR ,  SWOBODA JOHANN DR ,  SIEBEL HANS-PETER DR ,  SCHWAAB JOSEF DR ,  FRANK HERBERT

    IPC: C08L51/00 ,  C08L51/04 ,  C08L69/00

    Abstract: A thermoplastic molding material consists of a polycarbonate A and a graft copolymer B, the latter consisting of an elastomer (rubber) (b1) and a shell (b2) grafted onto the elastomer. The elastomer (b1) contains, as copolymerized units, from 35 to 100% by weight of a diene from the group consisting of the conjugated dienes of 4 to 5 carbon atoms, and can contain, as copolymerized units, from 0 to 65% by weight of a monomer from the group consisting of the alkyl acrylates or alkyl methacrylates, where alkyl is of 1 to 8 carbon atoms. The shell (b2) is obtained in a conventional manner by successive polymerization of the monomers constituting the shell, in two process steps, in the presence of the elastomer (b1); in a first process step, from 10 to 90% by weight of a mixture of a vinylaromatic hydrocarbon and one or more ethylenically unsaturated monomers which differ from the said hydrocarbon, in a weight ratio of from 90:10 to 60:40, are first incorporated as copolymerized units, followed by the polymerization of from 90 to 10% by weight of a monomer from the group consisting of the alkyl acrylates or of the alkyl methacrylates, where alkyl is of 1 to 8 carbon atoms. The molding material is used for the production of shaped articles.

    4.
    发明专利
    未知

    公开(公告)号：DE59107827D1

    公开(公告)日：1996-06-27

    申请号：DE59107827

    申请日：1991-02-22

    Applicant: BASF AG

    Inventor： SEITZ FRIEDRICH DR ,  RUPPMICH KARL ,  SCHWAAB JOSEF DR

    IPC: C08F265/06 ,  C08F265/00 ,  C08F265/04 ,  C08F291/08 ,  C08L25/12 ,  C08L51/00 ,  C08L51/06 ,  C08L101/00

    Abstract: A particulate graft polymer comprises from 30 to 90% by weight, of at least one elastomeric polymer A having a median particle size of from 30 to 1000 nm comprising-based on A-from 85 to 99.8% by weight of at least one alkyl acrylate A1 having from 1 to 8 carbon atoms in the alkyl moiety, from 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A2 and from 0.1 to 10% by weight of at least one further monoethylenically unsaturated monomer as grafting base, and from 10 to 70% by weight, grafted onto the elastomeric polymer A, of a sheath B comprising-based on B-from 50 to 90% by weight of at least one aromatic vinyl monomer B1 and from 10 to 50% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer B2, wherein monomer A3 is a hydroxyalkyl acrylate or methacrylate.

    6.
    发明专利
    未知

    公开(公告)号：DE3414118A1

    公开(公告)日：1985-10-24

    申请号：DE3414118

    申请日：1984-04-14

    Applicant: BASF AG

    Inventor： MITULLA KONRAD DR ,  HAMBRECHT JUERGEN DR ,  ECHTE ADOLF DR ,  SWOBODA JOHANN DR ,  SIEBEL HANS-PETER DR ,  SCHWAAB JOSEF DR ,  FRANK HERBERT

    IPC: C08L51/00 ,  C08L69/00 ,  C08L51/06

    Abstract: A thermoplastic molding material consists of from 10 to 90 parts by weight of a polycarbonate A and from 90 to 10 parts by weight of a graft copolymer B having a mean particle size of from 200 to 700 nm (d50 value of the integral mass distribution). The graft polymer B is formed from an elastomer (rubber) (b1), which accounts for from 10 to 80% by weight, and a grafted shell (b2), which accounts for from 90 to 20% by weight, the percentages in each case being based on (B). The elastomer (b1) is composed of from 50 to 99.9% by weight of an alkyl acrylate, where alkyl is of 1 to 8 carbon atoms, and from 0.1 to 5% by weight of a copolymerizable polyfunctional crosslinking monomer. The grafted shell (b2) is produced in three stages and contains, as graft monomers, (b2a1) from 5 to 40% by weight of a monoethylenically unsaturated aromatic hydrocarbon of not more than 12 carbon atoms, in the first stage, (b2a2) from 15 to 50% by weight of a mixture of a monoethylenically unsaturated aromatic hydrocarbon of not more than 12 carbon atoms and a copolymerizable ethylenically unsaturated monomer, in a weight ratio of from 90:10 to 60:40, in the second stage, and (b2a3) from 10 to 85% by weight of an alkyl (meth)acrylate in the third stage, the percentages in each case being based on (b2).

    7.
    发明专利
    未知

    公开(公告)号：ES2086427T3

    公开(公告)日：1996-07-01

    申请号：ES91102579

    申请日：1991-02-22

    Applicant: BASF AG

    Inventor： SEITZ FRIEDRICH DR ,  RUPPMICH KARL ,  SCHWAAB JOSEF DR

    IPC: C08F265/06 ,  C08F265/00 ,  C08F265/04 ,  C08F291/08 ,  C08L25/12 ,  C08L51/00 ,  C08L51/06 ,  C08L101/00

    Abstract: A particulate graft polymer comprises from 30 to 90% by weight, of at least one elastomeric polymer A having a median particle size of from 30 to 1000 nm comprising-based on A-from 85 to 99.8% by weight of at least one alkyl acrylate A1 having from 1 to 8 carbon atoms in the alkyl moiety, from 0.1 to 5% by weight of at least one polyfunctional, crosslinking monomer A2 and from 0.1 to 10% by weight of at least one further monoethylenically unsaturated monomer as grafting base, and from 10 to 70% by weight, grafted onto the elastomeric polymer A, of a sheath B comprising-based on B-from 50 to 90% by weight of at least one aromatic vinyl monomer B1 and from 10 to 50% by weight of at least one polar, copolymerizable, ethylenically unsaturated monomer B2, wherein monomer A3 is a hydroxyalkyl acrylate or methacrylate.

    Process for the preparation of thermoplastic copolymers
    8.
    发明专利
    Process for the preparation of thermoplastic copolymers 未知

    公开(公告)号：DE3430247A1

    公开(公告)日：1986-02-27

    申请号：DE3430247

    申请日：1984-08-17

    Applicant: BASF AG

    Inventor： REFFERT RUDI WILHELM ,  HAMBRECHT JUERGEN DR ,  JUNG RUDOLF H DR ,  SCHAECH HANSJOERG ,  GAUSEPOHL HERMANN DR ,  SIEBEL PETER DR ,  SCHWAAB JOSEF DR ,  ECHTE ADOLF DR

    IPC: C08F212/00 ,  C08F212/08

    Abstract: The invention relates to a process for the preparation of thermoplastic copolymers by continuous polymerisation of a mixture of a) a vinylaromatic monomer and b) a monomer from the group consisting of nitriles and esters of (meth)acrylic acid and of maleic anhydride, in bulk or in solution in the presence of small amounts of water, it being possible for an elastomer having a glass transition temperature of below 0 DEG C which may already be dissolved in the mixture or the components of the mixture to be present, in at least one mixed (stirred) reactor under steady-state conditions with dissipation of the heat of reaction by evaporative cooling, and subsequent discharge of the reaction products from the reactor and conventional isolation of the copolymers and recovery of the unreacted monomers, alone or together with a solvent, if one was used, and recycling thereof into the reactor together with the mixture of a) and b), where the polymerisation is carried out with the proviso that from 1 to 25% by weight of steam, based on the gases present in the vapour space of the reactor, are present in the vapour space and the reactor discharge contains less than 0.1% by weight of water.

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