Procedimiento para la preparación de una dispersión acuosa de aglutinante

    公开(公告)号:ES2542742T3

    公开(公告)日:2015-08-11

    申请号:ES10771369

    申请日:2010-09-07

    Applicant: BASF SE

    Abstract: Procedimiento para la preparación de una dispersión acuosa de un polimerizado A por polimerización en emulsión acuosa, iniciada con radicales, de monómeros etilénicamente insaturados en presencia de al menos un agente auxiliar de dispersión y al menos un iniciador radicalario, caracterizado porque para la polimerización se usan - 0,1 al 5 % en peso de acrilamida y/o metacrilamida (monómero A1), - 0,1 a 15 % en peso de al menos un ácido mono- o dicarboxílico C3 a C6 etilénicamente insaturado (monómero A2), - 0,1 al 10 % en peso de al menos un compuesto etilénicamente insaturado, que presenta al menos un grupo oxiranilo o un grupo oxetanilo (monómero A3), y - 70 al 99,7 % en peso de al menos otro compuesto etilénicamente insaturado, que es copolimerizable con los monómeros A1 a A3 (monómero A4), en donde las cantidades de monómero A1 a A4 dan el 100 % en peso.

    Aqueous impregnating agent, useful for impregnating raw or glued papers, comprises an urea derivative and an emulsion polymer, where the emulsion polymer contains ethylenically unsaturated monomer containing e.g. epoxide group

    公开(公告)号:DE102008041296A1

    公开(公告)日:2009-03-19

    申请号:DE102008041296

    申请日:2008-08-18

    Applicant: BASF SE

    Abstract: Aqueous impregnating agent, comprises an urea derivative (I) and an emulsion polymer, where: the weight ratio of (I) and emulsion polymer is 1:99-99:1, and the emulsion polymer contains 2.5-10 wt.% of at least an ethylenically unsaturated monomer (in a polymerized form) containing an epoxide-, hydroxyalkyl- and/or N-methylolamide-group. Aqueous impregnating agent, comprises an urea derivative of formula (I) and an emulsion polymer, where: the weight ratio of (I) and emulsion polymer is 1:99-99:1, and the emulsion polymer contains 2.5-10 wt.% of at least an ethylenically unsaturated monomer (in a polymerized form) containing an epoxide-, hydroxyalkyl- and/or N-methylolamide-group. R 1>, R 2>H, OH (preferred), 1-6C-alkyl, 1-6C-alkoxyl, 1-6C-hydroxyalkyl or 2-6C-hydroxyalkoxyl; R 3>, R 4>H (preferred), 1-6C-alkyl or 2-6C-hydroxyalkyl; and n : 0-2, preferably 0. Provided that: (I) exhibits at least 2 hydroxyl group. Independent claims are included for: (1) a process for the impregnation of raw- or glued- paper comprising impregnating the raw- or glued- paper with the aqueous impregnating agent, bringing the obtained impregnated paper optionally into a form and subsequently drying the impregnated and/or formed paper; and (2) an impregnated paper, obtained by the above process. [Image].

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