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    Thermoplastic moulding composition
    31.
    发明专利
    Thermoplastic moulding composition 未知

    公开(公告)号：DE3130774A1

    公开(公告)日：1983-02-24

    申请号：DE3130774

    申请日：1981-08-04

    Applicant: BASF AG

    Inventor： HAMBRECHT JUERGEN DIPL CHEM DR ,  MCKEE GRAHAM EDMUND DIPL CHEM ,  BRANDSTETTER FRANZ DIPL CHEM D ,  ECHTE ADOLF DIPL CHEM DR ,  JUNG RUDOLF H DIPL CHEM DR ,  SCHARF BERNHARD DIPL CHEM DR

    IPC: C08L35/06 ,  C08L51/04 ,  C08L69/00 ,  C08L25/02

    Abstract: A thermoplastic moulding composition which is a mixture of 5-95% by weight of an impact-modified styrene-maleic anhydride copolymer (I) and 95-5% by weight of a polycarbonate (II). The impact-modified styrene-maleic anhydride copolymer (I) is a mixture of two constituents A and B. It contains from 50 to 95% by weight of a copolymer A, based on A + B, which is built up from: a1) from 65 to 95 parts by weight of a monovinylaromatic monomer, a2) from 5 to 35 parts by weight of an unsaturated dicarboxylic anhydride, optionally a3) from 2 to 15 parts by weight of an acrylically unsaturated monomer. Constituent B is present in a proportion of 5 to 50% by weight, based on A + B, and is a graft copolymer built up from: b1) from 50 to 90 parts by weight of a rubber which has a glass transition temperature, Tg, of below 0 DEG C, b2) from 10 to 50 parts by weight of a monovinylaromatic monomer, and b3) from 0.1 to 25 parts by weight of a (meth)acrylate and/or acrylonitrile, where, regarding the parts by weight of the monomers building up the hard matrix and the graft shell, the absolute values of the difference of the parts by weight between the sum of [a2) and a3)] and [b3)] differ by 4 or less than 4. The moulding composition according to the invention is prepared by mixing the constituents component I with component II in the melt. The moulding compositions according to the invention are used for the production of mouldings.

    32.
    发明专利
    未知

    公开(公告)号：DE3129083A1

    公开(公告)日：1983-02-10

    申请号：DE3129083

    申请日：1981-07-23

    Applicant: BASF AG

    Inventor： NAARMANN HERBERT DIPL CHEM DR ,  HAMBRECHT JUERGEN DIPL CHEM DR ,  RIEBER NORBERT DIPL CHEM DR

    IPC: C08G65/00 ,  C08G65/38 ,  C08G65/44

    Abstract: A process for the preparation of high molecular weight polyphenylene ethers from monohydric phenols which have alkyl substituents in both ortho-positions and may additionally have an alkyl substituent in one meta-position but not in the para-position, by an oxidative coupling reaction, employing oxygen, at from 10 DEG to 25 DEG C., in the presence of a catalyst complex comprising a copper salt and an N-substituted imidazole, in the presence of an aromatic C8-C10-hydrocarbon solvent. N-Methylimidazole, N-ethylimidazole, N-isopropylimidazole, N-n-butylimidazole, N-cyclohexylimidazole, N-octylimidazole and N-phenylimidazole are preferably used as the imidazole, advantageously in amounts of from 0.5 to 5 percent by weight.

    Thermoplastic moulding compositions
    35.
    发明专利
    Thermoplastic moulding compositions 未知

    公开(公告)号：DE3118629A1

    公开(公告)日：1982-11-25

    申请号：DE3118629

    申请日：1981-05-11

    Applicant: BASF AG

    Inventor： BRANDSTETTER FRANZ DIPL CHEM D ,  HAMBRECHT JUERGEN DIPL CHEM DR

    IPC: C08L51/04 ,  C08L71/12 ,  C08L83/00 ,  C08L71/04 ,  C08L25/04 ,  C08L83/04

    Abstract: The invention relates to moulding compositions comprising a) polyphenylene ethers and b) impact-modified styrene polymers, which are characterised in that they i) contain impact-modified styrene polymers whose soft component has a mean particle diameter of greater than 0.2 mu m, with the proviso that a substantial amount of the soft component has a particle diameter of greater than 3 mu m, and ii) contain a polyorganosiloxane as a further component. Such moulding compositions have a balanced property profile with respect to toughness, both in the notched impact strength test and in the falling tube test, and flow properties.

    39.
    发明专利
    未知

    公开(公告)号：DE2916668A1

    公开(公告)日：1980-11-13

    申请号：DE2916668

    申请日：1979-04-25

    Applicant: BASF AG

    Inventor： HAMBRECHT JUERGEN DIPL CHEM DR ,  LINDENSCHMIDT GERHARD DIPL CHE ,  REGEL WALTER

    IPC: C08L25/00 ,  C08G65/08 ,  C08L25/12 ,  C08L33/00 ,  C08L33/02 ,  C08L71/00 ,  C08L71/02

    Abstract: Molding materials containing styrene-acrylonitrile copolymers, in which an additional essential ingredient is from 0.1 to 2.0% by weight, based on the copolymer, of a three-block polymer X-Y-X, where X is a terminal ethylene oxide block and Y is a central propylene oxide block. The proportion of terminal ethylene oxide blocks X, based on block copolymer, is from 5 to 20% by weight, while the central propylene oxide block Y has a number-average mean molecular weight of from 700 to 3,000 and its proportion is from 80 to 95% by weight, based on block copolymer. The number-average molecular weight of the sum of the two terminal blocks X is from 140 to 1,000. The novel molding materials may be used for the manufacture of moldings, since the three-block copolymer X-Y-X advantageously influences the processing characteristics of styrene-acrylonitrile copolymers, and in particular broadens the range of conditions under which they may be injection-molded, without adversely affecting the mechanical properties of the styrene-acrylonitrile copolymers. Accordingly, the injection molding scrap rate can be kept very low.

    Process for the removal of the catalyst from polyphenylene ethers
    40.
    发明专利
    Process for the removal of the catalyst from polyphenylene ethers 未知

    公开(公告)号：DE3217564A1

    公开(公告)日：1983-11-17

    申请号：DE3217564

    申请日：1982-05-11

    Applicant: BASF AG

    Inventor： REFFERT RUDI WILHELM DIPL ING ,  HAMBRECHT JUERGEN DIPL CHEM DR ,  NAARMANN HERBERT DIPL CHEM DR ,  KANIG GERHARD PROF DIPL CHEM D ,  ROTTLER RUDOLF DIPL CHEM DR

    IPC: C08G65/46 ,  C08F6/02

    Abstract: The invention relates to a process for the removal of the catalyst in the preparation of high-molecular-weight polyphenylene ethers from monohydric phenols by oxidative coupling reaction with oxygen in the presence of a catalyst complex comprising a metal salt and an organic amine in the presence of a solvent, and removal of the metal ion component of the catalyst from the polyphenylene ether solution, the removal of the metal ion component of the catalyst being carried out by means of high-polymeric, crosslinked cation exchanger resins, which may also be fibrous, characterised in that the cation exchanger is fibrous. The removal of the metal ion component is expediently carried out from a polyphenylene ether solution containing less than or equal to 100 mg/kg of catalyst metal ions per mg/kg of catalyst metal ions.

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