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    2.
    发明专利
    未知

    公开(公告)号：DE502005005138D1

    公开(公告)日：2008-10-02

    申请号：DE502005005138

    申请日：2005-08-04

    Applicant: BASF SE

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

    IPC: C08F222/02 ,  C08F220/04 ,  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.

    3.
    发明专利
    未知

    公开(公告)号：AT405597T

    公开(公告)日：2008-09-15

    申请号：AT05776629

    申请日：2005-08-04

    Applicant: BASF SE

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

    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.

    Procedimiento para la preparación de polímeros de ácido acrílico
    4.
    发明专利
    Procedimiento para la preparación de polímeros de ácido acrílico 未知

    公开(公告)号：ES2811326T3

    公开(公告)日：2021-03-11

    申请号：ES17702123

    申请日：2017-02-02

    Applicant: BASF SE

    Inventor： BARTH JOHANNES ,  FONSECA GLEDISON ,  FAUL DIETER ,  ERNST MARTIN ,  DETERING JÜRGEN ,  LEIFELD FERDINAND ,  TUERKOGLU GAZI

    IPC: C08F2/10 ,  C02F5/10 ,  C08F2/38 ,  C08F120/06 ,  C08F220/06 ,  C08L33/02

    Abstract: Procedimiento para la preparacion de soluciones acuosas de polimeros de acido acrilico, mediante polimerizacion de acido acrilico en modo de operacion de alimentacion con un iniciador por radicales en presencia de hipofosfito en agua como solvente, en el cual (i) se colocan previamente agua y dado el caso acido acrilico en forma acida, no neutralizada, dado el caso uno o varios comonomeros con insaturacion etilenica, dado el caso solucion acuosa de hipofosfito y dado el caso iniciador, (ii) se anaden acido acrilico en forma acida, no neutralizada, dado el caso uno o varios comonomeros con insaturacion etilenica, solucion acuosa de iniciador por radicales y solucion acuosa de hipofosfito, (iii) una vez terminada la adicion de acido acrilico se anade una base a la solucion acuosa, en el que el contenido de comonomero no supera 30 % en peso, referido al contenido total de monomero, caracterizado porque el acido acrilico, la solucion acuosa de iniciador por radicales y la solucion acuosa de hipofosfito son anadidos de modo que la relacion x molar de acido acrilico a hidrogeno [AS]/[P-H] unido al fosforo a lo largo de un intervalo de tiempo, en el cual reacciona por lo menos 75 % del acido acrilico, exhibe un valor x constante dentro de ± 0,5, que esta en el intervalo de 0,8 a 2, porque el promedio temporal de momento de dosificacion de la solucion de hipofosfito **(Ver fórmula)** es de 0,3 a 0,47 veces el tiempo total de adicion de acido acrilico (t1-t1,0), y porque el promedio temporal de momento de dosificacion de la solucion de hipofosfito es 0,3 - 0,45 veces la totalidad de tiempo de transcurso de la solucion de hipofosfito.

    Method for producing acrylic acid polymers
    7.
    发明专利
    Method for producing acrylic acid polymers 未知

    公开(公告)号：AU2017214842B2

    公开(公告)日：2021-02-11

    申请号：AU2017214842

    申请日：2017-02-02

    Applicant: BASF SE

    Inventor： BARTH JOHANNES ,  FONSECA GLEDISON ,  FAUL DIETER ,  ERNST MARTIN ,  DETERING JÜRGEN ,  LEIFELD FERDINAND ,  TUERKOGLU GAZI

    IPC: C08F2/10 ,  C02F5/10 ,  C08F2/38 ,  C08F220/06

    Abstract: The invention relates to a method for producing aqueous solutions of acrylic acid polymers by polymerizing acrylic acid in feed mode with a radical starter in the presence of hypophosphite in water as a solvent, wherein (i) water and optionally acrylic acid in acidic, non-neutralized form, optionally one or more ethylenically unsaturated comonomers, optionally aqueous hypophosphite solution, and optionally initiator are introduced, (ii) acrylic acid in acidic, non-neutralized form, optionally one or more ethylenically unsaturated comonomers, aqueous radical starter solution, and aqueous hypophosphite solution are added, (iii) after the end of the acrylic acid feed, a base is added to the aqueous solution, wherein the comonomer content does not exceed 30 wt% with respect to the total monomer content, characterized in that the acrylic acid, the aqueous radical starter solution, and the aqueous hypophosphite solution are added in such a way that, over a time period in which at least 75% of the acrylic acid is converted, the molar ratio x of acrylic acid to phosphorus-bonded hydrogen [AA]/[P-H] has a value x that is constant to ±0.5 and that lies in the range of 0.8 to 2.

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