中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

52 records (took 0.024 seconds)

    Thermoplastic molding composition with improved optical properties contains a softening graft copolymer with a core of specified particle size distribution and refractive characteristics
    22.
    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.

    Stabilized thermoplastic moulding materials
    25.
    发明专利
    Stabilized thermoplastic moulding materials 未知

    公开(公告)号：AU5840101A

    公开(公告)日：2001-12-11

    申请号：AU5840101

    申请日：2001-05-17

    Applicant: BASF AG

    Inventor： GUNTHERBERG NORBERT ,  CZAUDERNA BERNHARD ,  ITTEMANN PETER

    IPC: C08K5/00 ,  C08K5/13 ,  C08L25/12 ,  C08L55/02 ,  C08L71/02 ,  C08K5/098 ,  C08K5/38

    Abstract: Thermoplastic molding compositions comprising, based on the components A) to F), A) from 5 to 70% by weight of at least one graft copolymer A) made from an elastomeric graft base with a glass transition temperature below 0° C., and a graft made from a styrene compound, and acryonitrile or methacrylonitrile or a mixture of these and, where appropriate, further monoethylenically unsaturated monomers, B) from 29 to 90% by weight of a hard copolymer made from at least one styrene compound, acrylonitrile or methacrylonitrile or a mixture of these and, where appropriate, further monoethylenically unsaturated monomers, C) from 0 to 5% by weight of at least one three-block copolymer X-Y-X having a central block Y made from propylene oxide units and having terminal blocks X made from ethylene oxide units, D) from 0.01 to 5% by weight of at least one butylated reaction product of p-cresol with dicyclopentadiene, E) from 0.01 to 5% by weight of at least one thiocarboxylic ester, F) from 0.01 to 5% by weight of at least one alkali metal salt or alkaline earth metal salt of a C6-C20 carboxylic acid, and G) from 0 to 30% by weight, based on components A) to G), of other conventional additives,where the weathered db* value of the molding compositions is below +5.0 after 100 hours of exposure to light and weathering to ISO 4892/2, method A, black-panel temperature 65° C., using the CIE-Lab color system, to DIN 6174 and DIN 5033.

    26.
    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.

    Thermoplastic moulding materials
    27.
    发明专利
    Thermoplastic moulding materials 未知

    公开(公告)号：AU1981200A

    公开(公告)日：2000-07-03

    申请号：AU1981200

    申请日：1999-12-16

    Applicant: BASF AG

    Inventor： GUNTHERBERG NORBERT ,  WUNSCH JOSEF ,  ITTEMANN PETER ,  KNOLL KONRAD ,  NIESSNER NORBERT

    IPC: C08F265/04 ,  C08F265/06 ,  C08L25/08 ,  C08L51/04 ,  C08L53/02 ,  C08L69/00

    Abstract: Thermoplastic molding compositions comprising(A) 5 to 98%-wt., based on components (A) through (E), of at least one elastomeric graft copolymer,(B) 1 to 90%-wt., based on components (A) through (E), of a further copolymer,(C) 1 to 70%-wt., based on components (A) though (D), of an elastomeric block copolymer composed ofat least one block CA (hard phase) having copolymerized units of a vinylaromatic monomer, andat least one elastomeric block C(B/A) (soft phase) having copolymerized units of a vinylaromatic monomer, and of a diene,(D) 0 to 300%-wt., based on components (A) through (C), of a polycarbonate, and(E) 0 to 30%-wt., based on components (A) through (E), of conventional additives and processing aids,are useful for producing films, moldings or fibers.

    29.
    发明专利
    未知

    公开(公告)号：DE502005000978D1

    公开(公告)日：2007-08-16

    申请号：DE502005000978

    申请日：2005-02-03

    Applicant: BASF AG

    Inventor： STORK MARTIN ,  WEBER MARTIN ,  GOTTSCHALK AXEL ,  RIECHERS SVEN ,  GUENTHERBERG NORBERT ,  FISCHER WOLFGANG ,  LEBER LUDGER ,  ITTEMANN PETER ,  JUENGLING STEPHAN ,  DUIJZINGS WIL

    IPC: C08L51/04 ,  C08F279/02 ,  C08F279/04 ,  C08F285/00 ,  C08L55/02

    Abstract: The invention relates to thermoplastic moulding materials containing a mixture of (A) between 30 and 69 wt. %, in relation to the sum of the constituents (A), (B) and (C), of a methylmethacrylate polymer, (B) between 30 and 69 wt. %, in relation to the sum of the constituents (A), (B) and (C), of a copolymer that can be obtained by the polymerisation of a vinylaromatic monomer and a vinylcyanide, and (C) between 1 and 40 wt. %, in relation to the sum of the constituents (A), (B) and (C), of a graft copolymer that can be obtained from (C1) between 60 and 90 wt. %, in relation to (C), of a core, (C2) between 5 and 20 wt. %, in relation to (C), of a first graft envelope consisting of a vinylaromatic monomer, an alkylmethacrylate and optionally a cross-linking monomer, and (C3) between 5 and 20 wt. %, in relation to (C), of a second graft envelope consisting of an alkyl(meth)acrylate polymer, on the proviso that the quantitative ratio of (C2) to (C3) is between 2:1 and 1:2. The invention is characterised in that the average particle size D50 of the core (C1) is between 50 and 250 nm, the average particle size D90 of the core (C1) is between 60 and 1000 nm, the average particle size D90 of the core (C1) being larger than the average particle size D50 of the core (C1), by a factor between 1.15 and 20, and the core (C1) can be obtained by the polymerisation of a monomer mixture comprising (C11) between 65 and 89 wt. %, in relation to (C1), of a 1,3-diene, (C12) between 10 and 34.9 wt. %, in relation to (C1), of a vinylaromatic monomer, and (C13) between 0.1 and 5 wt. %, in relation to (C1), of an agglomeration polymer. The invention also relates to a method for producing said moulding masses, to the use thereof, and to the moulded bodies obtained therefrom.

    30.
    发明专利
    未知

    公开(公告)号：DE502004003730D1

    公开(公告)日：2007-06-14

    申请号：DE502004003730

    申请日：2004-12-14

    Applicant: BASF AG

    Inventor： STORK MARTIN ,  WEBER MARTIN ,  GOTTSCHALK AXEL ,  RIECHERS SVEN ,  GUENTHERBERG NORBERT ,  FISCHER WOLFGANG ,  LEBER LUDGER ,  ITTEMANN PETER ,  JUENGLING STEPHAN

    IPC: C08L33/12 ,  C08F257/02 ,  C08F279/02 ,  C08F285/00 ,  C08L25/12 ,  C08L35/06 ,  C08L51/00 ,  C08L51/04 ,  C08L55/02

    Abstract: The present invention relates to thermoplastic molding compositions comprising a mixture of (A) from 30 to 69% by weight, based on the sum of components (A), (B) and (C), of a methyl methacrylate polymer, (B) from 30 to 69% by weight, based on the sum of components (A), (B) and (C), of a copolymer obtainable by polymerizing a styrenic monomer and a vinyl cyanide, and (C) from 1 to 40% by weight, based on the sum of components (A), (B) and (C), of a graft copolymer obtainable from (C1) from 60 to 90% by weight, based on (C), of a core obtainable by polymerizing a 1,3-diene and a styrenic monomer, (C2) from 5 to 20% by weight, based on (C), of a first graft shell, and (C3) from 5 to 20% by weight, based on (C), of a second graft shell composed of an alkyl (meth)acrylate polymer, with the proviso that the ratio of (C2) to (C3) is in the range from 2:1 to 1:2.

Patent Agency Ranking