23.
    发明专利
    未知

    公开(公告)号:AT441672T

    公开(公告)日:2009-09-15

    申请号:AT06708491

    申请日:2006-02-23

    Applicant: BASF SE

    Abstract: Preparation of an aqueous polymer dispersion comprises radically initiated polymerization of an ethylenically unsaturated monomer in the presence of dispersing additives, optionally a water soluble organic solvent in an aqueous medium, where at least a partial quantity of ethylenic unsaturated monomer and an aqueous soluble organic solvent exists with an average droplet diameter of = 1000 nm (mini-emulsion). Preparation of an aqueous polymer dispersion comprises radically initiated polymerization of an ethylenically unsaturated monomer in the presence of dispersing additives, optionally a water soluble organic solvent in an aqueous medium, where at least a partial quantity of ethylenically unsaturated monomer and an aqueous soluble organic solvent exists with an average droplet diameter of = 1000 nm (mini-emulsion), where the mini-emulsion is prepared by a raw emulsion with an average diameter of >= 2 mu m, containing at least partial quantity of water, dispersing additives, ethylenically unsaturated monomer, optionally a water soluble organic solvent, and passed through a micro-porous membrane with an average pore diameter of = 1000 nm.

    Dispersiones poliméricas finamente divididas que contienen almidón, procedimientos para su preparación y uso como cola en producción de papel

    公开(公告)号:ES2605153T3

    公开(公告)日:2017-03-13

    申请号:ES12772320

    申请日:2012-10-11

    Applicant: BASF SE

    Abstract: Una dispersión de polímero finamente dividida que contiene almidón, la cual es obtenible mediante polimerización en emulsión por radicales libres de monómeros etilénicamente insaturados en presencia de al menos una iniciadores redox y almidón, en la cual se utilizan (a) de 15 a 35% en peso de al menos un estireno opcionalmente sustituido, (b) de 65 a 80% en peso de al menos un acrilato de alquilo de C1-C12 y/o metacrilato de alquilo de C1-C12, (c) de 0 a 10% en peso de al menos otro monómero etilénicamente insaturado copolimerizable, como los monómeros etilénicamente insaturados, y la suma de (a) + (b) + (c) es igual a 100% con base en el contenido de monómero activo y se usan (d) de 15 a 40% en peso de al menos un almidón degradado que tiene una masa molar Mw de 1000 a 65 000 g/mol, con base en el peso total del contenido de sólidos de los componentes (a) + (b) + (c) + (d), como el almidón, y la polimerización se lleva a cabo en presencia de al menos 0.01% en peso, con base en los monómeros utilizados, de al menos un agente de transferencia de cadena que contiene terpeno, y en la cual la dispersión de polímero comprende opcionalmente un compuesto de aluminio.

    ANTI-FOAMING AGENT FOR THE PAPER INDUSTRY

    公开(公告)号:CA2699792C

    公开(公告)日:2017-02-14

    申请号:CA2699792

    申请日:2008-10-13

    Applicant: BASF SE

    Abstract: The invention provides for the paper industry an antifoam which is an oil-in-water emulsion at least as effective as the products used to date. The oil phase comprises: (a): one or more compounds selected from alcohols having at least 12C, fatty acid esters of alcohols having at least 22C and carboxylic acids having from 1 to 36C, and distillation residues optionally alkoxylated, the distillation residues being obtained in the preparation of alcohols having at least 8C by oxo synthesis or by the Ziegler process, and having a boiling point >= 200°C at 20 mbar; and/or (b): one or more fatty acid esters of carboxylic acids having from 12 to 22C with monohydric to trihydric alcohols having from 1 to 18C; and (d): from 1 to 80% by weight of polyglyceryl esters, wherein the oil phase makes up more than 50 but not more than 80% wt. of the oil-in-water emulsion.

    27.
    发明专利
    未知

    公开(公告)号:AT522663T

    公开(公告)日:2011-09-15

    申请号:AT08839600

    申请日:2008-10-13

    Applicant: BASF SE

    Abstract: Antifoams for the paper industry, based on oil-in-water emulsions in which the oil phase comprises (a) at least one alcohol having at least 12 carbon atoms, fatty acid esters of alcohols having at least 22 carbon atoms and C1- to C36-carboxylic acids, distillation residues which are obtainable in the preparation of alcohols having a carbon number of at least 8 by oxo synthesis or by the Ziegler process and which, if appropriate, are alkoxylated, mixtures of said compounds and/or (b) at least one fatty acid ester of C12- to C22-carboxylic acids with monohydric to trihydric C1- to C18-alcohols and, if appropriate, (c) at least one hydrocarbon having a boiling point above 200° C. or a fatty acid having 12 to 22 carbon atoms and (d) from 1 to 80% by weight of polyglyceryl esters which are obtainable by at least 20% esterification of polyglycerol mixtures comprising from 0 to 10% by weight of monoglycerol, from 15 to 40% by weight of diglycerol, from 30 to 55% by weight of triglycerol, from 10 to 25% by weight of tetraglycerol, from 0 to 15% by weight of pentaglycerol, from 0 to 10% by weight of hexaglycerol and from 0 to 5% by weight of polyglycerols having a higher degree of condensation with at least one fatty acid having 12 to 36 carbon atoms, more than 50 to 80% by weight of the oil phase being involved in the production of the oil-in-water emulsions.

    ANTI-FOAMING AGENT FOR THE PAPER INDUSTRY

    公开(公告)号:CA2699792A1

    公开(公告)日:2009-04-23

    申请号:CA2699792

    申请日:2008-10-13

    Applicant: BASF SE

    Abstract: Anti-foaming agent for the paper industry made from oil-in-water emulsions, the oil phase of which contains (a) at least one alcohol with at least 12 C atoms, fatty acid esters of alcohols with at least 22 C atoms and C1 to C36carboxylic acids, distillation residues obtained from the production of alcohols with a carbon count of at least 8 by oxosynthesis or the Ziegler method and which are optionally alkoxylated, mixtures of the above compounds and/or (b) at least one fatty acid ester of C12- to C22 carboxylic acids with mono- to tri-valent C1- bis C18 alcohols and optionally (c) at least one hydrocarbon with a boiling point above 200 oC or a fatty acid with 12 to 22 carbon atoms, (d) 1 to 80 wt. % of polyglycerine esters, obtained by at least 20% esterification of polyglycerine mixtures of: 0 to 10 wt.% monoglycerine, 15 to 40 wt.% diglycerine, 30 to 55 wt.% triglycerine, 10 to 25 wt.% tetraglycerine, 0 to 15 wt.% pentaglycerine, 0 to 10 wt.% hexaglycerine and 0 to 5 wt.% more highly condensed polyglycerines with at least one fatty acid with 12 to 36 C atoms and the oil phase makes up 50 to 80 wt.% of the oil-in-water emulsion.

    29.
    发明专利
    未知

    公开(公告)号:DE112006002291A5

    公开(公告)日:2008-07-31

    申请号:DE112006002291

    申请日:2006-09-14

    Applicant: BASF SE

    Abstract: An aqueous dispersion of a polymer, obtainable by emulsion polymerization of compounds (monomers) having unsaturated radicals in the presence of at least two different polymerization regulators A) and B), wherein A) is a compound selected from α-methylstyrene dimer and hydrocarbons which form a pentadienyl or 1-phenylallyl radical on abstraction of a hydrogen atom and B) is a compound having a mercapto group, the amount of B) being more than 2 parts by weight per 100 parts by weight of monomers.

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