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    1.
    发明专利
    未知

    公开(公告)号：DE59202659D1

    公开(公告)日：1995-08-03

    申请号：DE59202659

    申请日：1992-04-24

    Applicant: BASF AG

    Inventor： BESECKE SIEGMUND DR ,  WAGNER DANIEL DR ,  SCHOEN WILFRIED ,  ENDLICH KARL-LUDWIG

    IPC: C08F2/22 ,  C08F2/38 ,  C08F285/00

    Abstract: Emulsion graft copolymers composed of a) 2-10% by weight of a core composed of 80-99.99% by weight of methyl methacrylate (I), 0.01-5% by weight of allyl methacrylate (II), 0-19.99% by weight of other monofunctional comonomers (III) and 0-3% by weight of other di- or polyfunctional comonomers (IV), b) 15-50% by weight of a first shell composed of 60-89.99% by weight of a C1-C20-alkyl acrylate (V), 10-39.99% by weight of a vinylaromatic monomer (VI), 0.01-5% by weight of II, 0-10% by weight of I and/or III, 0-3% by weight of IV, c) 5-20% by weight of a second shell with a composition as indicated under (a), d) 15-50% by weight of a third shell with a composition as indicated under (b), e) 15-30% by weight of a fourth shell composed of 80-99.95% by weight of I, 0.05-2% by weight of a regulator (VII) and 0-19.95% by weight of III, are suitable as additives to increase the impact strength of thermoplastic compositions.

    3.
    发明专利
    未知

    公开(公告)号：ES2100600T3

    公开(公告)日：1997-06-16

    申请号：ES94109817

    申请日：1994-06-24

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  BESECKE SIEGMUND DR ,  ENDLICH KARL-LUDWIG

    IPC: C08F2/20 ,  C08F2/42 ,  C08F4/32 ,  C08F4/36 ,  C08F220/12

    Abstract: Bead polymers comprising 80 to 99 % by weight of at least one C1-C18-alkyl ester of methacrylic acid and 1 to 20 % by weight of at least one C1-C18-alkyl ester of acrylic acid, obtainable by polymerisation, at a temperature between 100 and 140 DEG C which is approximately constant over the majority of the polymerisation time, by means of an initiator system comprising at least two peroxidic initiators I having different decomposition temperatures T, at which in each case half of the initiator has decomposed after 1 hour, wherein - the initiator Imin having the lowest decomposition temperature has a decomposition temperature Tmin in the range from 60 to 100 DEG C, - the initiator Imax having the highest decomposition temperature has a decomposition temperature Tmax in the range from 100 to 140 DEG C, the difference between Tmax and Tmin is greater than 10 DEG C, and Imax is a perketal of the formula (I) in which the radicals R and R are identical or different alkyl radicals having 1 to 5 carbon atoms, where R and R can be connected to form a 5- or 6-membered ring, and R is a tert-butyl or tert-amyl radical, and - further initiators In, which can be used if desired and have decomposition temperatures Tn between Tmin and Tmax, in the presence of a protective colloid, with the proviso that from 20 to 80 % by weight of the C1-C18-alkyl ester of acrylic acid is only added after a conversion in the range from 20 to 80 %, based on the amount of monomer employed at the beginning.

    4.
    发明专利
    未知

    公开(公告)号：ES2082573T3

    公开(公告)日：1996-03-16

    申请号：ES93116604

    申请日：1993-10-14

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  WAGNER DANIEL DR ,  STRAUB FERDINAND DR ,  ZIMMER GUENTER DR ,  ENDLICH KARL-LUDWIG

    IPC: C08J7/04 ,  C08L33/12 ,  C09D133/12 ,  C09D151/04

    Abstract: Mixtures comprising (A) from 80 to 99% by weight of a polymer based on methyl methacrylate, (B) from 20 to 1% by weight of a particulate polymer having a weight-average value (Mw) of the particle diameter which is in the range from 1-50 mu m, obtainable by polymerisation of a monomer which contains vinyl groups, and (C) from 0 to 60% by weight of a multistage graft rubber based on an ester of acrylic acid or on butadiene for the preparation of rough coating compositions.

    6.
    发明专利
    未知

    公开(公告)号：DE4114641A1

    公开(公告)日：1992-11-05

    申请号：DE4114641

    申请日：1991-05-04

    Applicant: BASF AG

    Inventor： BESECKE SIEGMUND DR ,  WAGNER DANIEL DR ,  SCHOEN WILFRIED ,  ENDLICH KARL-LUDWIG

    IPC: C08F2/22 ,  C08F2/38 ,  C08F285/00

    Abstract: Emulsion graft copolymers composed of a) 2-10% by weight of a core composed of 80-99.99% by weight of methyl methacrylate (I), 0.01-5% by weight of allyl methacrylate (II), 0-19.99% by weight of other monofunctional comonomers (III) and 0-3% by weight of other di- or polyfunctional comonomers (IV), b) 15-50% by weight of a first shell composed of 60-89.99% by weight of a C1-C20-alkyl acrylate (V), 10-39.99% by weight of a vinylaromatic monomer (VI), 0.01-5% by weight of II, 0-10% by weight of I and/or III, 0-3% by weight of IV, c) 5-20% by weight of a second shell with a composition as indicated under (a), d) 15-50% by weight of a third shell with a composition as indicated under (b), e) 15-30% by weight of a fourth shell composed of 80-99.95% by weight of I, 0.05-2% by weight of a regulator (VII) and 0-19.95% by weight of III, are suitable as additives to increase the impact strength of thermoplastic compositions.

    8.
    发明专利
    未知

    公开(公告)号：DE59402642D1

    公开(公告)日：1997-06-12

    申请号：DE59402642

    申请日：1994-06-24

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  BESECKE SIEGMUND DR ,  ENDLICH KARL-LUDWIG

    IPC: C08F2/20 ,  C08F2/42 ,  C08F4/32 ,  C08F4/36 ,  C08F220/12

    Abstract: Bead polymers comprising 80 to 99 % by weight of at least one C1-C18-alkyl ester of methacrylic acid and 1 to 20 % by weight of at least one C1-C18-alkyl ester of acrylic acid, obtainable by polymerisation, at a temperature between 100 and 140 DEG C which is approximately constant over the majority of the polymerisation time, by means of an initiator system comprising at least two peroxidic initiators I having different decomposition temperatures T, at which in each case half of the initiator has decomposed after 1 hour, wherein - the initiator Imin having the lowest decomposition temperature has a decomposition temperature Tmin in the range from 60 to 100 DEG C, - the initiator Imax having the highest decomposition temperature has a decomposition temperature Tmax in the range from 100 to 140 DEG C, the difference between Tmax and Tmin is greater than 10 DEG C, and Imax is a perketal of the formula (I) in which the radicals R and R are identical or different alkyl radicals having 1 to 5 carbon atoms, where R and R can be connected to form a 5- or 6-membered ring, and R is a tert-butyl or tert-amyl radical, and - further initiators In, which can be used if desired and have decomposition temperatures Tn between Tmin and Tmax, in the presence of a protective colloid, with the proviso that from 20 to 80 % by weight of the C1-C18-alkyl ester of acrylic acid is only added after a conversion in the range from 20 to 80 %, based on the amount of monomer employed at the beginning.

    10.
    发明专利
    未知

    公开(公告)号：AT133193T

    公开(公告)日：1996-02-15

    申请号：AT93116604

    申请日：1993-10-14

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  WAGNER DANIEL DR ,  STRAUB FERDINAND DR ,  ZIMMER GUENTER DR ,  ENDLICH KARL-LUDWIG

    IPC: C08J7/04 ,  C08L33/12 ,  C09D133/12 ,  C09D151/04 ,  C09D157/04

    Abstract: Mixtures comprising (A) from 80 to 99% by weight of a polymer based on methyl methacrylate, (B) from 20 to 1% by weight of a particulate polymer having a weight-average value (Mw) of the particle diameter which is in the range from 1-50 mu m, obtainable by polymerisation of a monomer which contains vinyl groups, and (C) from 0 to 60% by weight of a multistage graft rubber based on an ester of acrylic acid or on butadiene for the preparation of rough coating compositions.

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