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公开(公告)号：CA2864370A1
公开(公告)日：2013-08-22
申请号：CA2864370
申请日：2013-02-11
Applicant: BASF SE
Inventor： AL-HELLANI RABIE , CIMPEANU CARMEN-ELENA , SCHMIDT-THUMMES JURGEN , LAWRENZ DIRK , GEORGIEVA KRISTINA , SONG ANJA
Abstract: Described is an aqueous polymer dispersion comprising a chain growth addition polymer obtainable via free-radically initiated emulsion polymerization from ethylenically unsaturated, free-radically polymerizable monomers, wherein the chain growth addition polymer is formed to an extent of not less than 60 wt% from primary monomers selected from vinylaromatic compounds, conjugated aliphatic dienes, vinyl esters of saturated C1- to C20-carboxylic acids, esters of acrylic acid or of methacrylic acid with monohydric C1- to C20-alcohols, aliphatic hydrocarbons having 2 to 8 carbon atoms and one or two double bonds, or mixtures thereof, wherein the monomers are polymerized in the presence of lignosulfonate and wherein the chain growth addition polymer is branched or crosslinked. Also described is a process for preparing the aqueous polymer dispersion. The polymer dispersion is useful for preparing paper coating compositions.
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公开(公告)号：CA2800927A1
公开(公告)日：2011-12-22
申请号：CA2800927
申请日：2011-06-14
Applicant: BASF SE
Inventor： SCHMIDT-THUEMMES JUERGEN , EVSTATIEVA ELITSA , MOREL AURELIE , LAWRENZ DIRK , SEYFFER HERMANN
IPC: C08F220/18 , C08F2/22 , C08F212/08 , D21H19/58
Abstract: Aqueous polymer dispersions and processes for preparing them are described. The polymer dispersions can be obtained by free-radically initiated emulsion polymerization of from 19.9 to 80 parts by weight of vinylaromatic compounds, from 19.9 to 80 parts by weight of acrylate monomers selected from among C1-C10-alkyl acrylates and C1-C10-alkyl methacrylates, from 0.1 to 10 parts by weight of ethylenically unsaturated acids and from 0 to 20 parts by weight of other ethylenically unsaturated monomers, wherein the emulsion polymerization is carried out in an aqueous medium in the presence of free-radical-forming initiators, seed latex and at least one carbohydrate compound in the form of a degraded starch. The polymer dispersions are particularly suitable for producing paper coating compositions.
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公开(公告)号：CA2742885A1
公开(公告)日：2010-06-03
申请号：CA2742885
申请日：2009-11-20
Applicant: BASF SE
Inventor： EVSTATIEVA ELITSA , SCHMIDT-THUEMMES JUERGEN , LAWRENZ DIRK
IPC: C08F251/00 , C08B31/00 , C08F251/02 , C08F279/02 , C08F279/04 , C08L51/02 , C08L55/02 , C09D151/02 , C09D155/02 , D21H19/54 , D21H19/58
Abstract: What is described is a method for preparing aqueous polymer dispersions, wherein a vinyl aromatic compound such as styrene, a conjugated aliphatic diene such as butadiene and an ethylenically unsaturated carboxylic acid nitrile such as acetonitrile are copolymerized in an aqueous medium. The copolymerization is done in the presence of a decomposed starch and radical-forming initiators. At least a portion of the various monomers of ethylenically unsaturated carboxylic acid nitriles are polymerized before the ethylenically unsaturated carboxylic acid nitriles are added to the polymerization mixture.
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公开(公告)号：CA2944972A1
公开(公告)日：2015-10-15
申请号：CA2944972
申请日：2015-04-07
Applicant: BASF SE
Inventor： VELING NICO , JIMENEZ GARCIA LUCIA , LAWRENZ DIRK
Abstract: The invention relates to a process for preparing an aqueous dispersion of a polymer P, which comprises the emulsion polymerization of vinyl acetate, an acrylate monomer, which is a C1-C10 alkyl acrylate or a C1-C10 methacrylate, an a,ß-ethlyenically unsaturated C3-C8 carboxylic acid and at least one out of glycidyl methacrylate, glycidyl acrylate, allyl methacrylate and allyl acrylate, in the presence of a starch derivative. Optionally, an additional monomer is an ethylenically unsaturated sulfonic acid, an ethylenically unsaturated other monomer or both of them. Furthermore, the aqueous polymer dispersion obtainable from this process and a powder form thereof are disclosed. They are useful for a paper coating slip containing one of the aforementioned forms. A paper or a cardboard, which is coated with the paper coating slip, shows surface strength, which is expressed by a good dry pick resistance, a good wet pick resistance or good offset test results. The aqueous polymer dispersion or the powder form thereof is furthermore useful as a binder.
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公开(公告)号：ZA201104644B
公开(公告)日：2012-09-26
申请号：ZA201104644
申请日：2011-06-23
Applicant: BASF SE
Inventor： EVSTATIEVA ELITSA , SCHMIDT-THUMMES JURGEN , LAWRENZ DIRK
IPC: C08F20060101 , C08B20060101 , C08L20060101 , C09D20060101 , D21H20060101
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Patent Agency Ranking
公开(公告)号：ES2361964T3
公开(公告)日：2011-06-24
申请号：ES08804033
申请日：2008-09-11
Applicant: BASF SE
Inventor： KOPLIN TOBIAS JOACHIM , REIMERS OLIVER , NORD SIMON , LAWRENZ DIRK , BIRKERT OLIVER , GEISSLER ULRIKE
IPC: C09D129/04 , C08J3/00 , C08L101/00 , C09D5/22
Abstract: Dispersión acuosas de polímeros, marcada con colorantes fluorescentes con una viscosidad, determinada con ayuda del método Brookfield (usillo número 3, 23 ºC) situada en el intervalo comprendido entre 500 y 900 mPas, que está constituida por agua así como por un componente sólido, que está constituido por (A) desde un 1 hasta un 99 % en peso de, al menos, un tipo de partículas polímeras dispersadas con un tamaño de partícula, promedio en volumen, situado en el intervalo comprendido entre 0,01 y 1 µm, determinado por medio de la difracción de la luz, (B) desde un 1 hasta un 20 % en peso de, al menos, un tipo de partículas polímeras dispersadas con un tamaño de partícula, promedio en volumen situado en el intervalo comprendido entre 1 y 100 µm, determinado por medio de la difracción de la luz, que contiene, al menos, un colorante fluorescente, y (C) desde un 0,001 hasta un 3 % en peso de, al menos, un agente espesante, así como (D) al menos un aditivo estabilizante de la dispersión acuosa de los polímeros, elegido entre el grupo que está constituido por las substancias hidrófugas, los compuestos tensioactivos, los coloides protectores, los agentes para llevar a cabo el ajuste del valor del pH, los agentes protectores contra la luz, los absorbedores de los UV, los disolventes orgánicos de bajo punto de ebullición y de elevado punto de ebullición, los inhibidores de la polimerización y los agentes antiespumantes.
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公开(公告)号：PT2197964E
公开(公告)日：2011-03-23
申请号：PT08804033
申请日：2008-09-11
Applicant: BASF SE
Inventor： KOPLIN TOBIAS JOACHIM , REIMERS OLIVER , NORD SIMON , LAWRENZ DIRK , BIRKERT OLIVER , GEISSLER ULRIKE
IPC: C09D129/04 , C08J3/00 , C08L101/00 , C09D5/22
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公开(公告)号：AT500300T
公开(公告)日：2011-03-15
申请号：AT08804033
申请日：2008-09-11
Applicant: BASF SE
Inventor： KOPLIN TOBIAS JOACHIM , REIMERS OLIVER , NORD SIMON , LAWRENZ DIRK , BIRKERT OLIVER , GEISSLER ULRIKE
IPC: C09D129/04 , C08J3/00 , C08L101/00 , C09D5/22
Abstract: Pigment-free, aqueous polymer dispersion marked with fluorescent dyes, having a viscosity of from 500 to 900 mPa·s, determined with the aid of the Brookfield method (spindle 3, 23° C.), and comprising, based in each case on the solids of the polymer dispersion, (A) from 1 to 99% by weight of at least one type of water-soluble and/or water-dispersible polymer, (B) from 1 to 20% by weight of at least one type of water-dispersible polymer particles which comprise at least one fluorescent dye and (C) from 0.001 to 3% by weight of at least one thickener; process for its preparation and its use.
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公开(公告)号：CA2700059A1
公开(公告)日：2009-04-16
申请号：CA2700059
申请日：2008-10-06
Applicant: BASF SE
Inventor： EVSTATIEVA ELITSA , SCHMIDT-THUMMES JURGEN , LAWRENZ DIRK , MINDERHOUD JOHANNES JAN-BESSEL , ARENS GUILLERMO
IPC: C08F251/02 , C08F2/22 , C08L25/10 , C08L51/02 , C09D151/02 , D21H19/54 , D21H19/58 , D21H21/16
Abstract: Aqueous polymer dispersions based on copolymers formed from vinyl-aromatics and conjugated aliphatic dienes having a mean particle size of from 80 to 150 nm are obtainable by free-radically initiated emulsion copolymerization of (a) from 19.9 to 80 parts by weight of at least one vinylaromatic compound, (b) from 19.9 to 80 parts by weight of at least one conjugated aliphatic diene, (c) from 0.1 to 10 parts by weight of at least one ethylenically unsaturated acid and (d) from 0 to 20 parts by weight of at least one other monoethylenically unsaturated monomer, where the sum of the parts by weight of monomers (a), (b), (c) and (d) is always 100, in an aqueous medium in the presence of at least one degraded starch with an intrinsic viscosity ? of less than 0.07 dl/g, using at least 0.9% by weight, based on all of the monomers used, of initiators selected from peroxodisulphates, peroxosulphates, azo initiators, organic peroxides, organic hydroperoxides and hydrogen peroxide, wherein at least 30% by weight of the initiators are initially charged in the aqueous medium together with the degraded starch and the monomers and the remaining initiators are metered into this initial charge under polymerization conditions. Processes for preparing this dispersion by emulsion polymerization of the monomers (a), (b), (c) and optionally (d) in the presence of a degraded starch with an intrinsic viscosity ? of less than 0.07 dl/g, where a portion of the initiator is initially charged together with the aqueous solution of the degraded starch in the reactor, and the remaining initiator and the monomers are metered in under polymerization conditions, and the use of the aqueous polymer dispersions as binders, adhesives, sizes for fibres or for producing coatings.
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公开(公告)号：DE102008002989A1
公开(公告)日：2009-02-19
申请号：DE102008002989
申请日：2008-08-07
Applicant: BASF SE
Inventor： LAWRENZ DIRK , HENNIG INGOLF , KARPOV ANDREY , KIRSCH STEFAN , HIBST HARTMUT , KACZUN JUERGEN , EMS STEPHEN , MILLS HARRY THOMAS , GLOOR PAUL EDWIN , HOLZENKAMP UTA
Abstract: Electrically conductive, magnetic composite material, comprising (A) pulverulent, inorganic, magnetic material which is electrically not or only poorly conductive, and (B) an electrically conductive material, selected from the group consisting of pulverulent and liquid carbon-comprising organic materials and pulverulent carbon allotropes, in a ratio by weight of (A):(B)=from 1:100 to 100:1; a process for its production, and its use, and also ferrimagnetic mixed oxide (A) of the general formula I: M''M'''O4 (I), in which M'' is a first metal component which comprises divalent metal cations; and M''' is a second metal component which comprises trivalent metal cations; capable of production by reacting, in a quantitative ratio such that the resultant ferromagnetic mixed oxide (A) is electrically neutral, divalent metal cations M'' and trivalent metal cations M''' in aqueous solution and/or dispersion, comprising at least one electrically conductive material (B) and/or at least one material which differs therefrom and which is a binder (C) which dries physically or else is crosslinkable thermally and/or by actinic radiation.
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