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    CONTROL OF THE THICKENING OF SILICATE-CONTAINING AQUEOUS SYSTEMS
    1.
    发明专利
    CONTROL OF THE THICKENING OF SILICATE-CONTAINING AQUEOUS SYSTEMS 未知

    公开(公告)号：CA2639923A1

    公开(公告)日：2007-08-16

    申请号：CA2639923

    申请日：2007-01-30

    Applicant: BASF AG

    Inventor： KLIPPEL FRANK ,  BUECHNER KARL-HEINZ ,  NIED STEPHAN ,  SCHORNICK GUNNAR ,  GOTHLICH ALEXANDER

    IPC: C02F5/10 ,  C02F1/44 ,  C09K8/508 ,  C09K8/575

    Abstract: The invention relates to a method for controlling the thickening of aqueous, silicate-containing systems, characterized in that at least one copolymer having an average molecular weight (Mw) of at least 3000 g/mol and not more than 60000 g/mol is added to said aqueous system and that the copolymer is, essentially statistically, made of monoethylenically unsaturated monocarboxylic acids, monoethylenically unsaturated dicarboxylic acids and eventually ethylenically unsaturated comonomers. The method is also characterized in that the polymerization is carried out in the presence of 0.01 to 100 mol-%, in relation to the total amount of all COOH groups of the mono- and dicarboxylic acids, of at least one base for producing the copolymer, the indicated amounts in wt.-% each referring to the total amount of all used monomers.

    METODO ESENCIALMENTE LIBRE DE PLOMO PARA PASIVAR SUPERFICIES METALICAS QUE CONSISTEN DE ZN, ALEACIONES DE ZN, AI O ALEACIONES DE AI.
    8.
    发明专利
    METODO ESENCIALMENTE LIBRE DE PLOMO PARA PASIVAR SUPERFICIES METALICAS QUE CONSISTEN DE ZN, ALEACIONES DE ZN, AI O ALEACIONES DE AI. 未知

    公开(公告)号：MXPA06003938A

    公开(公告)日：2006-06-27

    申请号：MXPA06003938

    申请日：2004-10-15

    Applicant: BASF AG

    Inventor： GOTHLICH ALEXANDER

    IPC: B05D7/14 ,  B05D7/16 ,  C09D5/08 ,  C23C22/08 ,  C23C22/53 ,  C23C22/56 ,  C23C22/78 ,  C23C22/83

    Abstract: La presente invencion se relaciona con un proceso substancialmente libre de cromo para pasivar superficies metalicas de Zn, aleaciones de Zn, Al o aleaciones de Al tratando la superficie con una formulacion acuosa acidica que comprende cuando menos un polimero o copolimero soluble en agua, substancialmente no reticulado que contiene cuando menos 50% en peso de unidades de acido (met)acrilico y comprende agua o una mezcla de solvente acuosa que comprende cuando menos 50% en peso de agua, y tratando adicionalmente la superficie con cuando menos un reticulador soluble en agua, que comprende cuando menos 2 grupos de reticulacion seleccionados del grupo que consiste en grupos azirano, oxirano y tiirano. La invencion se relaciona ademas con capas de pasivacion que se pueden obtener por medio del proceso y con una formulacion apropiada para este proceso.

    METHOD FOR PRODUCING CARBOXYLATE-RICH COPOLYMERS FROM MONOETHYLENICALLY UNSATURATED MONOCARBOXYLIC AND DICARBOXYLIC ACIDS AND CARBOXYLATE-RICH COPOLYMERS HAVING A LOW NEUTRALIZATION DEGREE
    10.
    发明专利
    METHOD FOR PRODUCING CARBOXYLATE-RICH COPOLYMERS FROM MONOETHYLENICALLY UNSATURATED MONOCARBOXYLIC AND DICARBOXYLIC ACIDS AND CARBOXYLATE-RICH COPOLYMERS HAVING A LOW NEUTRALIZATION DEGREE 未知

    公开(公告)号：CA2575167A1

    公开(公告)日：2006-03-02

    申请号：CA2575167

    申请日：2005-08-04

    Applicant: BASF AG

    Inventor： GERST MATTHIAS ,  MICHL KATHRIN ,  FAUL DIETER ,  WITTELER HELMUT ,  KLIPPEL FRANK ,  DIETSCHE FRANK ,  GOTHLICH ALEXANDER

    IPC: C08F220/04 ,  C08F222/02 ,  C09D133/02

    Abstract: Partially neutralized carboxylate-rich copolymers, processes for their preparation and methods of using the same are disclosed, the copolymers comprising: monomers (A), (B), and (C); wherein monomer (A) comprises at least one monoethylenically unsaturated monocarboxylic acid, and is present in an amount of 30% to 79.99% by weight; wherein monomer (B) comprises at least one monoethylenically unsaturated dicarboxylic acid selected from the group consisting of acids corresponding to general formula I, acids corresponding to general formula II, anhydrides thereof, and other hydrolyzable derivatives thereof, and is present in an amount of 20.01% to 70% by weight: (HOOC)R1C-CR2(COOH) (I) R1R2C-C(-(CH2)n-COOH)(COOH) (II) wherein R1 and R2 each independently represent H or a straight-chain or branched, optionally substituted alkyl radical having 1 to 20 carbon atoms, or, in the case of (I), R1 and R2 together being an optionally substituted alkylene radical having 3 to 20 carbon atoms, and n represents an integer from 0 to 5; wherein monomer (C) comprises at least one additional ethylenically unsaturated comonomer, and is present in an amount of 0% to 40% by weight; wherein the carboxylate-rich copolymer is partially neutralized with at least one amine and the carboxylate-rich copolymer has a degree of neutralization of 2 to 18 mol %, based on the total amount of all COOH groups of the monocarboxylic and dicarboxylic acids; and wherein the carboxylate-rich copolymer has an average molecular weight Mw of at least 3000 g/mol.

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