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    METHOD FOR MANUFACTURING OF A HYDROPHOBIC CELLULOSIC MATERIAL
    2.
    发明申请
    METHOD FOR MANUFACTURING OF A HYDROPHOBIC CELLULOSIC MATERIAL 审中-公开
    制造疏水性细胞纤维材料的方法

    公开(公告)号：WO2016131790A1

    公开(公告)日：2016-08-25

    申请号：PCT/EP2016/053205

    申请日：2016-02-16

    Applicant: BASF SE

    Inventor： KROENER, Hubertus ,  GATTERMAYER, Jochen ,  EICHHOLZ, Christian ,  WENGELER, Lukas

    IPC: D21H25/02 ,  D21H25/04 ,  D21H17/14 ,  D21H17/70 ,  D21H21/16 ,  C08L1/00

    CPC classification number: D21H21/16 ,  C08B11/12 ,  D21H17/14 ,  D21H17/70 ,  D21H25/02 ,  D21H25/04 ,  Y02P20/544

    Abstract: The invention relates to a process for manufacturing a hydrophobic cellulosic material, which comprises the steps of (a) providing a cellulosic material, which is based on cellulosic fibers, wherein the fibers possess hydroxyl groups at their surface; (b) reacting the material from step (a) with an aliphatic carboxylic acid chloride or a mixture, which comprises aliphatic carboxylic acid chlorides, in supercritical carbon dioxide; (c) separating the reacted material from step (b) from the reaction to obtain the hydrophobic cellulosic material.

    Abstract translation: 本发明涉及一种用于制造疏水性纤维素材料的方法，其包括以下步骤：（a）提供基于纤维素纤维的纤维素材料，其中所述纤维在其表面具有羟基; （b）使来自步骤（a）的材料与脂族羧酸氯化物或包含脂族羧酸氯化物的混合物在超临界二氧化碳中反应; （c）从反应中分离步骤（b）的反应物质，得到疏水纤维素材料。

    PROCESS FOR PRODUCING AN AQUEOUS POLYMER DISPERSION
    3.
    发明申请
    PROCESS FOR PRODUCING AN AQUEOUS POLYMER DISPERSION 审中-公开

    公开(公告)号：WO2021018767A1

    公开(公告)日：2021-02-04

    申请号：PCT/EP2020/070942

    申请日：2020-07-24

    Applicant: BASF SE

    Inventor： MOLLAT DU JOURDIN, Xavier ,  LESWIN, Joost ,  REINSCH, Michaela ,  SPECHT, Nicole ,  EINHORN-RECH, Janine ,  DIMMER, Joerg Alexander ,  PACHE, Rainer ,  GATTERMAYER, Jochen ,  DENU, Hans-Juergen

    IPC: C08F2/22 ,  C08F2/38 ,  C08L33/04 ,  C08L33/06 ,  C09D5/00 ,  C09D133/00

    Abstract: The present application relates to a process for producing an aqueous polymer dispersion of polymerized ethylenically unsaturated monomers M by a multistage aqueous radical emulsion polymerization comprising a first aqueous radical emulsion polymerization step of a first monomer composition M.a and subsequently a further aqueous radical emulsion polymerization step of a second monomer composition M.b. The present application also relates to aqueous polymer dispersions obtainable by such a process and to the use thereof, in particular as a binder in coating compositions. The process comprises a multistage aqueous radical emulsion polymerization of ethylenically unsaturated monomers M, comprising a) at least one non-ionic, monoethylenically unsaturated monomer M1 having a solubility in deionized water of at most 60 g/L at 25°C and 1 bar, b) at least one monoethylenically unsaturated monomer M2 selected from monomers having an acid group and their salts, and c) optionally one or more ethylenically unsaturated monomers M3, which are different from the monomers M1 and M2, where the process comprises i) a first step of an aqueous radical emulsion polymerization of a first monomer composition M.a consisting of monomers M1, M2 and optionally M3, to obtain a first aqueous polymer dispersion, where the monomer composition M.a comprises at most 2% by weight, in particular at most 1.5% by weight and especially at most 1.5% by weight or at most 1.0% by weight, based on the total weight of the monomers of the monomer composition M.a, of monomers M2, and subsequently ii) at least one further aqueous radical emulsion polymerization step of a second monomer composition M.b consisting of monomers M1, M2 and optionally M3, where the second step is performed in the aqueous polymer dispersion of the first step and in the presence of a chain transfer agent T, where the monomer composition M.b comprises 2 to 20% by weight, in particular from 5 to 18% by weight and especially from 8 to 16% by weight, based on the total weight of the monomers of the monomer composition M.b, of at least one monomer M2, where the weight ratio of the total weight of monomers of monomer composition M.a to the total weight of monomers of monomer composition M.b is in the range from 10:90 to 90:10, in particular in the range from 50:50 to 87:13, especially in the range from 60:40 to 85:15.

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