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公开(公告)号：DE2749579A1
公开(公告)日：1979-05-10
申请号：DE2749579
申请日：1977-11-05
Applicant: BASF AG
Inventor： NAARMANN HERBERT DIPL CHEM DR , MCKEE GRAHAM EDMUND DIPL CHEM , SCHMITT BURGHARD DIPL CHEM DR
IPC: C08F265/06 , C08F291/02 , C08F265/00 , C08F291/06
Abstract: Graft copolymers comprising a crosslinked, saturated, elastomeric grafting base and a hard shell are prepared by incorporating thermolabile comonomers, as copolymerized units, into the grafting base during the preparation of the latter, in particular at a conversion of from 50 to 90%. During the subsequent grafting of the shell, the conditions used are such that the thermolabile comonomers incorporated as copolymerized units into the grafting base decompose into free radicals. This gives graft copolymers having improved mechanical properties, which copolymers also prove advantageous for the preparation of mixtures with other thermoplastics compatible with the graft copolymers.
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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
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.
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公开(公告)号：DE3149046A1
公开(公告)日：1983-06-16
申请号：DE3149046
申请日：1981-12-11
Applicant: BASF AG
Inventor： HAMBRECHT JUERGEN DIPL CHEM DR , SCHMITT BURGHARD DIPL CHEM DR , ECHTE ADOLF DIPL CHEM DR , WASSMUTH GEORG DIPL CHEM DR , SWOBODA JOHANN DIPL CHEM DR , SCHWAAB JOSEF DIPL CHEM DR , MCKEE GRAHAM EDMUND DIPL CHEM
Abstract: The invention relates to a weathering-resistant, thermoplastic moulding composition which contains an elastomer phase comprising a core A) and an elastomeric shell B), and a graft shell C) on the core. The elastomer phase A) makes up 95 to 60% by weight, based on A + B, and is built up from 60 to 100% by weight of at least one conjugated diene. It is prepared by polymerisation in aqueous emulsion and agglomeration with the aid of an acrylate dispersion to give particles having a mean diameter in the range from 0.16 to 0.45 mu m (d50 value of the cumulative weight distribution), after which the elastomeric shell B), which makes up from 40 to 5% by weight, based on A + B, is polymerised on. This shell is built up from a mixture of from 60 to 99% by weight of at least one acrylate having 1 to 8 carbon atoms in the alcohol radical and from 0.1 to 5% by weight of a polyfunctional crosslinking monomer. The graft shell C is present in a proportion of from 20 to 90% by weight, based on from 10 to 80% by weight of the sum of the elastomer components A + B, and is built up from a mixture of from 50 to 95% by weight of at least one unsaturated aromatic hydrocarbon having up to 12 carbon atoms, and from 5 to 50% by weight of at least one copolymerisable, monoethylenically unsaturated monomer. The moulding composition may additionally contain from 10 to 150 parts by weight, based on 100 parts by weight of A + B + C, of a hard phase D. The hard phase is formed from a monomer from the group consisting of vinylaromatic monomers and ethylenically unsaturated monomers. Conventional assistants in effective amounts may furthermore be present in the moulding composition. The moulding composition is used to produce mouldings.
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公开(公告)号：DE3102254A1
公开(公告)日：1982-09-02
申请号：DE3102254
申请日：1981-01-24
Applicant: BASF AG
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