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    Production of high-quality, high-brightness papermaking pulp, e.g. from recycled paper, uses an N-alkylammonium-acetonitrile salt as low temperature bleach activator for per compounds
    14.
    发明专利
    Production of high-quality, high-brightness papermaking pulp, e.g. from recycled paper, uses an N-alkylammonium-acetonitrile salt as low temperature bleach activator for per compounds 未知

    公开(公告)号：DE10153409A1

    公开(公告)日：2003-05-15

    申请号：DE10153409

    申请日：2001-10-30

    Applicant: BASF AG

    Inventor： WEINGART FRANZ ,  BRODT GREGOR ,  POTTHOFF-KARL BIRGIT ,  KINGMA AREND JOUKE

    IPC: D21C5/02 ,  D21C9/10 ,  D21C9/16 ,  D21C9/147

    Abstract: The bleaching activator used in a mixture for production of a papermaking pulp is an N-alkylammonium-acetonitrile salt. The bleaching activator used in a mixture for production of a papermaking pulp is an N-alkylammonium-acetonitrile salt of formula (I), the other components of the mixture being: (A) a pulp containing cellulose of vegetable origin, water and various materials depending on the method of pulp production; and (B) a bleach which is hydrogen peroxide, an alkali metal perborate or its hydrate, an alkali metal percarbonate, a persulfate or a typical oxygen bleach such as an organic peracid. R = 1-24C alkyl (optionally interrupted by non-adjacent O atoms and/or optionally OH-substituted), 4-24C cycloalkyl, 7-24C alkaryl or -CR R -CN; R and R = as for R or together form a 4- to 9-membered ring containing at least one C atom and also at least one O, S or N atom; R and R = H, 1-24C alkyl (optionally interrupted by non-adjacent O atoms and/or optionally OH-substituted), 4-24C cycloalkyl or 7-24C alkaryl; and Y = a sulfate, halide, methosulfate, tosylate or hydrogen sulfate anion. An Independent claim is also included for a de-inking formulation comprising the bleaching activator (I) together with: (i) an anionic and/or nonionic surfactant; (ii) an alkali source such as sodium hydroxide or silicate or silicon dioxide, optionally together with a complex-former and/or other additives; and (iii) a bleach as in (B) above.

    15.
    发明专利
    未知

    公开(公告)号：DE10125238A1

    公开(公告)日：2002-11-28

    申请号：DE10125238

    申请日：2001-05-22

    Applicant: BASF AG

    Inventor： KRONER MATTHIAS ,  BUECHNER KARL-HEINZ ,  BRODT GREGOR

    IPC: C04B7/52 ,  C04B24/26 ,  C04B24/32 ,  C04B103/52 ,  C08F6/10 ,  C08F8/14 ,  C08F290/06 ,  C08F299/02 ,  C08G65/332 ,  C08L71/02 ,  C08G63/78 ,  C04B24/24

    Abstract: Water soluble polymer comprising esters of acrylic acid, methacrylic acid and alkylpolyalkyene glycols, is prepared by esterification followed by radical polymerization of the resulting mixture in an aqueous medium, whereby the organic solvent is azeotropically distilled off during the polymerization and recycled to the mixture or is replaced by the addition of fresh water. A water soluble polymer (I) comprising esters of acrylic acid, methacrylic acid and alkylpolyalkyene glycols, is prepared by esterification of a mixture of acrylic acid (A), methacrylic acid (B) and an alkylpolyalkylene glycol (C) having a mol.wt. (Mw) of 350-4000 in a molar ratio of (A) to (C) of 0.1-4:1, a molar ratio of (B to (C) of 1-5:1 and molar ratio of the sum of (A) and (B) to (C) of 2-6:1, in the presence of an organic solvent that forms an azeotrope with water to at least 85 wt.% (w.r.t. (C)), followed by radical polymerization of the resulting mixture in an aqueous medium, whereby the organic solvent is azeotropically distilled off from the reaction mixture during the polymerization and the distilled water is recycled to the mixture or is replaced by the addition of fresh water.

    16.
    发明专利
    未知

    公开(公告)号：DE10125237A1

    公开(公告)日：2002-11-28

    申请号：DE10125237

    申请日：2001-05-22

    Applicant: BASF AG

    Inventor： KRONER MATTHIAS ,  BUECHNER KARL-HEINZ ,  BRODT GREGOR

    IPC: C04B7/52 ,  C04B24/26 ,  C04B24/32 ,  C04B103/52 ,  C08F2/10 ,  C08F2/38 ,  C08F6/10 ,  C08F8/00 ,  C08F20/28 ,  C08F290/06 ,  C08G65/332 ,  C08L71/02 ,  C08G63/78 ,  C08F8/14 ,  C04B24/24

    Abstract: Water-soluble polymers (I) of esters of acrylic acid (II) and alkyl-polyalkylene glycols (III) are obtained by a method involving azeotropic esterification of (II) and (III) in presence of organic solvent followed by radical polymerisation of the mixture with removal of solvent by azeotropic distillation and replacement of the lost water. Water-soluble polymers (I) of esters of acrylic acid (II) and alkylpolyalkylene glycols (III), obtained by azeotropic esterification of a mixture of (II) and (III) in a mol ratio of (2-3):1 in presence of at least 85 wt% (based on III) of an organic solvent which forms an azeotrope with water, followed by radical polymerisation of the resulting mixture with azeotropic distillation to remove the solvent and with replacement of lost water by recycling or by the addition of fresh water. An Independent claim is also included for a method for the production of (I) as described above.

    ПРИМЕНЕНИЕ КАРБОКСИЛАТСОДЕРЖАЩИХ ПОЛИМЕРОВ В КАЧЕСТВЕ ДОБАВОК В КЕРАМИЧЕСКИХ МАССАХ
    18.
    发明专利
    ПРИМЕНЕНИЕ КАРБОКСИЛАТСОДЕРЖАЩИХ ПОЛИМЕРОВ В КАЧЕСТВЕ ДОБАВОК В КЕРАМИЧЕСКИХ МАССАХ 未知

    公开(公告)号：RU2413700C2

    公开(公告)日：2011-03-10

    申请号：RU2008104960

    申请日：2006-07-04

    Applicant: BASF AG

    Inventor： GUTSMANN MARKUS ,  VIDEMANN TORSEN ,  BEKKER SHTEFAN ,  SHMIDT MARKO ,  GETTS TOMAS ,  BRODT GREGOR ,  PAKUSH JOAKHIM

    IPC: C04B35/634

    Abstract: Изобретениеотноситсяк применениюгомополимеровилисополимеров (мет)акриловойкислотыилисополимеровмоноолефиновс 3-40 атомамиуглеродас ангидридамидикарбоновыхкислотс этиленовойненасыщенностьюс 4-6 атомамиуглеродав качестведобавокв керамическихмассах, преждевсегов суглинкеи глине, предназначенныхдляизготовлениястроительнойкерамики, такойкакстроительныекирпичии кровельнаячерепица, атакжек керамическиммассам, содержащимуказанныедобавки. Техническимрезультатомизобретенияявляетсяповышениепрочностиизделий. Керамическиемассы, содержащиесуглинокилиглинуи от 0,01 до 5 мас.% врасчетенасодержаниетвердыхвеществсуглинкаилиглины (со)полимеров (мет)акриловойкислоты, содержащих: основнуюструктуруполи(мет)акриловойкислоты, ипринеобходимости, от 0,4 до 2,4 мас.% соединенныхс основнойструктуройи/иливстроенныхв основнуюструктуруструктурныхединицизобутиленаили, принеобходимости, от 5 до 25 мас.% соединенныхс основнойструктуройи/иливстроенныхв основнуюструктуруструктурныхединицизопропанолаи/илитерелактона, причемобщаямассаструктурныхединицв (со)полимере (мет)акриловойкислотысоставляет 100 мас.% дляизготовлениякровельныхчерепицилистроительныхкирпичейэкструзиейс формообразованием. 4 н. и 4 з.п. ф-лы, 4 табл.

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