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    Thermoplastic molding composition with improved optical properties contains a softening graft copolymer with a core of specified particle size distribution and refractive characteristics
    51.
    发明专利
    Thermoplastic molding composition with improved optical properties contains a softening graft copolymer with a core of specified particle size distribution and refractive characteristics 未知

    公开(公告)号：DE102005047463A1

    公开(公告)日：2007-04-05

    申请号：DE102005047463

    申请日：2005-09-30

    Applicant: BASF AG

    Inventor： WEBER MARTIN ,  GOTTSCHALK AXEL ,  ITTEMANN PETER ,  HOENL HANS

    IPC: C08L33/12 ,  C08J5/00 ,  C08L25/08 ,  C08L33/20 ,  C08L53/02

    Abstract: A thermoplastic molding composition comprising a specified mixture containing (a) a methyl methacrylate (co)polymer, (b) a vinyl aromatic-vinyl cyanide copolymer, (c) a graft copolymer and optionally (d) conventional additives is such that (1) the copolymeric core used for graft copolymer (c) has a monomodal particle size distribution and an average particle size (D 50) as measured by a described method of 300-400 nm; and (2) the difference of the refractive index of the total composition used to produce (c) and that of the (a)/(b) matrix is 0.003-0.008 as measured by a specified method. A thermoplastic molding composition comprising a specified mixture containing (c) a graft copolymer is such that (1) the copolymeric core used for graft copolymer (c) has a monomodal particle size distribution and an average particle size (D 50) as measured by a described method of 300-400 nm; and (2) the difference of the refractive index of the total composition used to produce (c) and that of the matrix based on the other polymers is 0.003-0.008 as measured by a specified method. The specified mixture comprises by weight (A) a methyl methacrylate polymer (30-69%) obtained by polymerization of (i) methyl methacrylate (90-100%) and (ii) a 1-8C alkyl acrylate (0-10%); (B) a copolymer (30-69%) obtained by copolymerization of (iii) a vinyl aromatic monomer (75-88%) and (iv) a vinyl cyanide (12-25%); (C) a graft copolymer (1-40%) comprising a core polymer (60-90%) obtained from (v) a 1,3-diene (65-89.9%), (vi) a vinyl aromatic monomer (10-34.9%) and (vii) an agglomeration polymer together with a first shell (5-20%) obtained by polymerization of (viii) a vinyl aromatic monomer (30-39%), (ix) a 1-8C alkyl methacrylate (61-70%) and (x) a crosslinking monomer (0-3%) and a second shell (5-20%) obtained by polymerization of (xi) a 1-8C alkyl methacrylate (70-98%) and (xii) a 1-8C alkyl acrylate (2-30%), the weight ratio first : second shell being 2 : 1-1 : 2; and optionally (D) conventional additives (up to 20%). An independent claim is also included for production of the mixtures by melt mixing of the components.

    52.
    发明专利
    未知

    公开(公告)号：DE102004004230A1

    公开(公告)日：2005-08-11

    申请号：DE102004004230

    申请日：2004-01-27

    Applicant: BASF AG

    Inventor： WEBER MARTIN ,  GOTTSCHALK AXEL ,  HAENSEL WERNER ,  HECKMANN WALTER ,  HOENL HANS ,  MOSBACH NORBERT ,  NEVOIGT RALF ,  HEYMANN WOLFGANG

    IPC: C08F279/02 ,  C08F279/04 ,  C08L25/08 ,  C08L25/10 ,  C08L25/12 ,  C08L25/14 ,  C08L51/00 ,  C08L51/04 ,  C08L55/02 ,  C08L77/00 ,  C08L77/02 ,  C08L77/06 ,  C08J5/10

    Abstract: Thermoplastic molding compositions composed of A) a polyamide having amino or carboxy end groups or a mixture of these end groups, B) a mixture composed of at least two graft copolymers, each comprising a rubber as graft base and a graft based on an unsaturated monomer, where these differ at least 5% by weight from one another in their rubber contents, C) a rubber-free copolymer, comprising c1) at least 30% by weight, based on the total weight of all of the units present in C), of units which derive from a vinylaromatic monomer, c2) units which derive from a monomer which comprises a functional group which can react with the end groups of the polyamide A), and c3) units which derive from a monomer which comprises no functional groups which react with the end groups of the polyamide A), and also moreover, if desired, D) a rubber-free matrix polymer, E) a low-molecular-weight compound which comprises a dicarboxylic anhydride group, and F) an additive, or a mixture of various additives.

    Transparent, high-impact thermoplastic moulding material, used for film, fibres and mouldings, contains acrylic polymer, styrene-acrylonitrile copolymer and graft copolymer with bimodal particle size distribution
    55.
    发明专利
    Transparent, high-impact thermoplastic moulding material, used for film, fibres and mouldings, contains acrylic polymer, styrene-acrylonitrile copolymer and graft copolymer with bimodal particle size distribution 未知

    公开(公告)号：DE19961894A1

    公开(公告)日：2001-06-21

    申请号：DE19961894

    申请日：1999-12-20

    Applicant: BASF AG

    Inventor： MC KEE GRAHAM EDMUND ,  GOTTSCHALK AXEL ,  SCHADE CHRISTIAN ,  NEUMANN RAINER ,  MESINGER CLAUDIA

    IPC: C08L25/12 ,  C08L33/12 ,  C08L51/04 ,  D01F6/44

    Abstract: Transparent, impact-resistant thermoplastic moulding materials containing (A) a methyl methacrylate (co)polymer, (B) a vinylaromatic-acrylonitrile copolymer and (C) a graft copolymer with a bimodal particle size distribution, in which the difference between the refractive index of (C) and that of the mixture of other components is less than 0.01. Transparent, impact-resistant thermoplastic moulding materials (I) containing a mixture of (A) 4-80 wt% methyl methacrylate (MMA) polymer derived from 90-100 wt% MMA and 0-10 wt% 1-8C alkyl acrylate, (B) 5-75 wt% of a copolymer of 78-88 wt% vinylaromatic monomer (VAr) and 12-22 wt% acrylonitrile (AN), (C) 10-91 wt% of a graft copolymer with a bimodal particle size distribution, comprising an elastomeric core with a glass transition point (Tg) below 0 deg C and one or more grafted shells based on 1-8C alkyl (meth)acrylate esters and optionally VAr (up to 22C) and/or crosslinking monomers and (D) 0-20 wt% additives, in which the amounts of (A), (B) and (C) add up to 100 wt% and the difference between the refractive index (RI) of component (C) and that of the mixture of (A), (B) and optionally (D) is less than 0.01 units. Independent claims are also included for (a) a method for the production of (I) by melt-compounding the components; (b) film, fibres and moulded products consisting essentially of (I).

    56.
    发明专利
    未知

    公开(公告)号：DE19953955A1

    公开(公告)日：2001-05-10

    申请号：DE19953955

    申请日：1999-11-09

    Applicant: BASF AG

    Inventor： GUENTHERBERG NORBERT ,  ITTEMANN PETER ,  GOTTSCHALK AXEL

    IPC: C08L25/12 ,  C08L53/02 ,  C08L55/02

    Abstract: Thermoplastic molding materials containing (A) 80 -99.995 wt. %, in relation to the total weight of the molding material, of a copolymer comprised of (a1) 50 -99 wt. %, in relation to (A), of at least one vinyl aromatic monomer, and (a2) 1 - 50 wt.- %, in relation to (A), of at least one polar, copolymerizable comonomer, (B) 0.005 - 20 wt. %, in relation to (A), (B), and optionally (C), a rubber elastic block copolymer consisting of at least one polymerized unit block BA comprising aromatic monomers and forming a hard phase and at least one elastomer bock BB/A consisting of at least one polymerized unit comprising vinyl aromatic monomers in addition to a diene and forming a soft phase, wherein the glass transition temperature Tg of block BA is above 25 DEG C and the glass transition temperature of clock BB/A is below 25 DEG C, and (C) 0-300 wt. %, in relation to (A) and (B) of at least one other polymer, (D) 0 -30 wt. %, in relation to the total weight of the molding materials, of other additives and auxiliary processing agents.

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