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    102.
    发明专利
    未知

    公开(公告)号：DE4322021A1

    公开(公告)日：1995-01-12

    申请号：DE4322021

    申请日：1993-07-02

    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.

    104.
    发明专利
    未知

    公开(公告)号：DE4318077A1

    公开(公告)日：1994-12-08

    申请号：DE4318077

    申请日：1993-06-01

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  WAGNER DANIEL DR ,  ZIMMER GUENTER DR

    IPC: C08K5/00 ,  C08K5/3435 ,  C08K5/3475 ,  C08K5/526 ,  C08L33/06 ,  C08L25/12 ,  C08K5/13 ,  C08K5/524

    Abstract: Moulding compositions which are resistant to stress cracking, essentially comprising A) from 49 to 99 % by weight of a polymer obtainable by polymerisation of a C1-C20-alkyl ester of methacrylic or acrylic acid, or mixtures of such esters, B) from 0.95 to 50 % by weight of a polymer obtainable by polymerisation of a monomer mixture of b1) from 75 to 82 % by weight of a vinyl aromatic monomer and b2) from 18 to 25 % by weight of acrylonitrile or methacrylonitrile, or a mixture thereof, and C) from 0.05 to 1 % by weight of a mixture comprising c1) a triaryl phosphite of the formula I in which R and R are C1-C12-alkyl, C5-C8-cycloalkyl, C6-C 10-aryl or C6-C10-aryl-C1-C4-alkyl, where the aryl radicals may be substituted up to 3 times by C1-C4-alkyl, and R is hydrogen or C1-C4-alkyl; c2) an amine of the formula II in which n has a value of from 2 to 10, c3) a benzotriazole of the formula III in which R , R and R are as defined for R ; c4) a phenol of the formula IV ABK IV where k is 1, 2 or 4, and, if k = 1, A is -COOR , -CONHR or , where R is C1-C21-alkyl, and, if k = 2, A is -CONH-(CH2)n-CONH-, or , where p and m are integers from 1 to 10, and, if k = 4, A is , where q is an integer from 1 to 4, and B is , where R and R are hydrogen, methyl or tert-butyl. h

    106.
    发明专利
    未知

    公开(公告)号：DE4227869A1

    公开(公告)日：1994-02-24

    申请号：DE4227869

    申请日：1992-08-22

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  GUENTHERBERG NORBERT DR

    IPC: C08F2/18 ,  C08F20/12 ,  C08L33/06 ,  D01F6/16 ,  D01F6/36

    Abstract: Polymers obtainable by suspension polymerisation of from 50 to 100% by weight of at least one compound selected from the group consisting of C1-C18-alkyl esters of acrylic acid and methacrylic acid, and from 0 to 50% by weight of further free-radical-polymerisable monomers, in the presence of a buffer selected from the group consisting of citric acid, alkali metal citrates, alkaline earth metal citrates and ammonium citrates, and a process for the preparation of these polymers, and their use for the production of mouldings.

    107.
    发明专利
    未知

    公开(公告)号：DE4226750A1

    公开(公告)日：1994-02-17

    申请号：DE4226750

    申请日：1992-08-13

    Applicant: BASF AG

    Inventor： DECKERS ANDREAS DR ,  GUENTHERBERG NORBERT DR ,  BUESCHL RAINER DR ,  JAHNS EKKEHARD DR

    IPC: C08L9/02 ,  C08L25/12 ,  C08L33/12 ,  C08L51/04 ,  C08L55/02 ,  C08L51/00 ,  C08L25/00

    Abstract: A thermoplastic moulding composition containing, based on the total amount of its constituents A, B and C, A: from 70 to 99% by weight of a thermoplastic resin A comprising, based on A, A1: from 50 to 100% by weight of a hard matrix A1 comprising, based on A1, A11: from 50 to 95% by weight of units of a vinylaromatic compound or methyl methacrylate or mixtures thereof (A11) and A12: from 5 to 50% by weight of units of acrylonitrile A12; A2: up to 50% by weight of an elastomeric, particulate graft copolymer A2 comprising, based on A2, A21: from 30 to 80% by weight of at least one elastomeric graft base A21 having a mean particle size of from 30 to 1000 nm comprising, based on A21, A211: from 50 to 100% by weight of units of a 1,3-diene or of a C4-C8-alkyl acrylate which forms elastomeric polymers (A211) and A212: up to 50% by weight of units of at least one vinyl monomer A212; and A22: from 15 to 85% by weight of a graft shell A22 comprising, based on A22, A221: from 50 to 90% by weight of units of a vinylaromatic monomer A221 and A222: from 10 to 50% by weight of units of acrylonitrile A222; B: from 0.5 to 15% by weight of a nitrile rubber B comprising, based on B, B1: from 10 to 40% by weight of units of acrylonitrile and B2: from 60 to 90% by weight of units of butadiene; and C: from 0.5 to 15% by weight of a particulate polymer C distributed in the hard matrix A and comprising, based on C, C1: from 80 to 99% by weight of units of methyl methacrylate, C2: from 0.5 to 15% by weight of units of an ester of acrylic acid, C3: from 0.5 to 5% by weight of units of a crosslinking monomer which can be copolymerised with C1 and C2, and C4: up to 10% by weight of units of a polar monomer selected from (meth)acrylic acid, hydroxyethyl (meth)acrylate and dimethylaminoethyl (meth)acrylate, the mean particle size of C being from 50 to 50,000 nm.b

    108.
    发明专利
    未知

    公开(公告)号：DE4225875A1

    公开(公告)日：1994-02-10

    申请号：DE4225875

    申请日：1992-08-05

    Applicant: BASF AG

    Inventor： BESECKE SIEGMUND DR ,  DECKERS ANDREAS DR ,  GUENTHERBERG NORBERT DR ,  SEITZ FRIEDRICH DR

    IPC: C08L25/00 ,  C08F8/32 ,  C08L25/06 ,  C08L25/12 ,  C08L25/14 ,  C08L25/18 ,  C08L33/00 ,  C08L33/24 ,  C08J3/20

    Abstract: Transparent moulding compounds containing A) 1 to 99 wt % of a copolymer obtainable by polymerizing a mixture of monomers of a1) 50 to 90 wt % of a vinyl aromatic monomer, a2) 10 to 50 wt % acrylonitrile or methacrylonitrile or a mixture thereof, and a3) 0 to 30 wt % of another monomer, and B) 99 to 1 wt % of a polymer based on a vinyl aromatic monomer obtainable by 1) polymerizing a monomer mixture of b1) 60 to 99 wt % of a mixture consisting of b11) 100 to 50 wt % of a vinyl aromatic monomer and b12) 0 to 50 wt % acrylonitrile or methacrylonitrile or a mixture thereof, and b2) 40 to 1 wt % of a C1-C20 alkyl ester of methacrylic or acrylic acid or mixtures of such esters and 2) causing the polymers obtained according to 1) to react with an amine of the general formula (I): RNH2, in which R is C2-C10 alkyl, C5-C8 cycloalkyl, C6-C10 aryl or C6-C10-aryl-C1-C4 alkyl, where these radicals, except for the C2-C10 alkyl radical, can be substituted up to three times by radicals selected from the group consisting of C1-C4 alkyl, C1-C4 alkoxy and halogen.

    110.
    发明专利
    未知

    公开(公告)号：DE4206948A1

    公开(公告)日：1993-09-09

    申请号：DE4206948

    申请日：1992-03-05

    Applicant: BASF AG

    Inventor： GOETZ WALTER DR ,  GAREISS BRIGITTE DR ,  DECKERS ANDREAS DR ,  BAIERWECK PETRA DR

    IPC: C08K3/34 ,  C08G69/02 ,  C08G69/26 ,  C08G69/36 ,  C08K5/03 ,  C08K5/51 ,  C08K7/02 ,  C08L9/00 ,  C08L21/00 ,  C08L77/00

    Abstract: Moulding compositions comprising A) from 40 to 100% by weight, based on the total weight of the moulding compositions, of a polyamide (nylon) mixture based on a1) from 5 to 30% by weight, based on the total weight of the polyamide mixture, of at least one homo- or copolyamide containing olefinic double bonds, comprising alpha ) from 40 to 100 mol %, based on the homo- or copolyamides, of at least one monomer containing at least one olefinic double bond (monomer alpha ), from the group consisting of alpha 1) olefinically unsaturated lactams, alpha 2) olefinically unsaturated aminocarboxylic acids, alpha 3) olefinically unsaturated dicarboxylic acids, and alpha 4) olefinically unsaturated diamines, and beta )from 0 to 60 mol %, based on the homo- or copolyamides, of at least one monomer containing no olefinic double bonds (monomer beta ), from the group consisting of beta 1) lactams, beta 2) aminocarboxylic acids, beta 3) dicarboxylic acids, and beta 4) diamines, and a2) from 70 to 95% by weight, based on the total weight of the polyamide mixture, of at least one polyamide containing no olefinic double bonds and B) from 0 to 35% by weight, based on the total weight of the moulding compositions, of an impact-modifying rubber, C) from 0 to 50% by weight, based on the total weight of the moulding compositions, of a filler and/or reinforcing agent, D) from 0 to 20% by weight, based on the total weight of the moulding compositions, of a flameproofing agent, and if desired E) further additives and auxiliaries.

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