公开(公告)号：BRPI1007156A2

公开(公告)日：2016-02-23

申请号：BRPI1007156

申请日：2010-02-15

Applicant: BASF SE

Inventor： LAWRENZ DIRK ,  EVSTATIEVA ELITSA

IPC: C08F2/38 ,  C08F212/08 ,  C09D5/02 ,  C09J125/10 ,  D21H19/48

公开(公告)号：CA2808167A1

公开(公告)日：2012-03-01

申请号：CA2808167

申请日：2011-08-24

Applicant: BASF SE

Inventor： EVSTATIEVA ELITSA ,  LAWRENZ DIRK ,  MINDERHOUD JOHANNES JAN-BESSEL ,  GARLICHS FLORIAN ,  BASSLER PETER ,  BALDAMUS JENS

IPC: C08F2/38 ,  C08F212/08 ,  C08F236/10 ,  C09D5/02 ,  D21H19/48

Abstract: The invention relates to an aqueous polymer dispersion containing a polymer, which can be produced by a radically initiated emulsion polymerization from ethylenically unsaturated, radically polymerizable monomers, wherein the polymerization of the monomers is carried out in the presence of a specific molecular weight regulator composition. The molecular weight regulator composition contains at least one mercaptoalkylcarboxylic acid ester of a C2 to C4 carboxylic acid and at least one oligomeric compound of formula R1-X-(A-S-)n-A-Y-R2, where R1 and R2 denote H or CH3-(CH2)0-2-C(=0)-, X and Y denote an oxygen atom or a sulfur atom, A denotes a divalent C1- to C18-alkylene group, and n denotes a number from 1 to 8. The invention further relates to a method for producing the aqueous polymer dispersion. The polymer dispersion can be used as a binder, adhesive, sizing agent for fibers, for producing coatings or for producing paper coating compounds.

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

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.

公开(公告)号：PT2580257E

公开(公告)日：2015-04-21

申请号：PT11724644

申请日：2011-06-14

Applicant: BASF SE

Inventor： LAWRENZ DIRK ,  SCHMIDT-THÜMMES JÜRGEN ,  SEYFFER HERMANN ,  EVSTATIEVA ELITSA ,  MOREL AURELIE

IPC: C08F220/18 ,  C08F2/22 ,  C08F212/08 ,  D21H19/58

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.

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.

公开(公告)号：CA2800927C

公开(公告)日：2018-09-25

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.

公开(公告)号：AU2011267134B2

公开(公告)日：2015-02-26

申请号：AU2011267134

申请日：2011-06-14

Applicant: BASF SE

Inventor： SCHMIDT-THUMMES JURGEN ,  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.

公开(公告)号：ZA201302191B

公开(公告)日：2014-06-25

申请号：ZA201302191

申请日：2013-03-25

Applicant: BASF SE

Inventor： EVSTATIEVA ELITSA ,  LAWRENZ DIRK ,  MINDERHOUD JOHANNES JAN-BASSEL ,  GARLICHS FLORIAN ,  BASSLER PETER ,  BALDAMUS JENS

IPC: C08F20060101 ,  C09D20060101 ,  D21H20060101

Abstract: The invention relates to an aqueous polymer dispersion containing a polymer, which can be produced by a radically initiated emulsion polymerization from ethylenically unsaturated, radically polymerizable monomers, wherein the polymerization of the monomers is carried out in the presence of a specific molecular weight regulator composition. The molecular weight regulator composition contains at least one mercaptoalkylcarboxylic acid ester of a C2 to C4 carboxylic acid and at least one oligomeric compound of formula R1-X-(A-S-)n-A-Y-R2, where R1 and R2 denote H or CH3-(CH2)0-2-C(=0)-, X and Y denote an oxygen atom or a sulfur atom, A denotes a divalent C1- to C18-alkylene group, and n denotes a number from 1 to 8. The invention further relates to a method for producing the aqueous polymer dispersion. The polymer dispersion can be used as a binder, adhesive, sizing agent for fibers, for producing coatings or for producing paper coating compounds.