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    DEFOAMING AGENT AND/OR DEAERATOR FOR AQUEOUS MEDIA TENDING TO FOAM
    34.
    发明专利
    DEFOAMING AGENT AND/OR DEAERATOR FOR AQUEOUS MEDIA TENDING TO FOAM 未知

    公开(公告)号：CA2493055C

    公开(公告)日：2010-04-13

    申请号：CA2493055

    申请日：2003-07-16

    Applicant: BASF AG

    Inventor： BONN JOHANN ,  LORENZ KLAUS ,  WEHRLE JOERG ,  MATZ MANFRED

    IPC: B01D19/04 ,  D21H21/12

    Abstract: The invention relates to a defoaming agent and/or deaerator based on oil-in-water dispersions, the oil phase of which contains at least one compound from the group of alcohols comprising at least 12 C atoms, alkoxylated fat alcohols, monoglycerides, diglycerides, and triglycerides of fatty acids, fatty acid ester from carboxylic acids comprising at least 12 C atoms and monovalent to trivalent alcohols comprising 3 to 22 C atoms, hydrocarbons having a boiling point of more than 200 ~C, fatty acids comprising 12 to 22 C atoms, 3-thiaalkane-1-ole, 3-thiaoxide alkane-1-ole, 3-thiadioxide-alkane-ole, and ester of the thiaalkane compounds in combination with (i) at least one polyglycerine that is obtained by esterification of at least 20 percent of polyglycerine with a carboxylic acid comprising 12 to 36 C atoms, and (ii) at least one bisamide consisting of ethylene diamine and carboxylic acids comprising 10 to 36 C atoms while the aqueous phase thereof contains at least one stabilizer, water, and an optional thickener, for aqueous media that tend to foam. Also disclosed is the use of said defoaming agent and/or deaerator for controlling foam in media tending to foam, particularly for controlling foam during cellulose boiling, cellulose washing, grinding of paper pulp, paper production, and dispersion of pigments used for paper production.

    AQUEOUS ALKYLDIKETENE DISPERSIONS AND THEIR USE AS SIZE FOR PAPER
    35.
    发明专利
    AQUEOUS ALKYLDIKETENE DISPERSIONS AND THEIR USE AS SIZE FOR PAPER 未知

    公开(公告)号：CA2231541C

    公开(公告)日：2005-04-05

    申请号：CA2231541

    申请日：1996-10-25

    Applicant: BASF AG

    Inventor： BONN JOHANN ,  REUTHER WOLFGANG ,  LORENCAK PRIMOZ ,  ETTL ROLAND

    IPC: C07C45/90 ,  C07C49/88 ,  C09K23/00 ,  D06M13/13 ,  D06M15/11 ,  D21H17/09 ,  D21H17/10 ,  D21H17/17 ,  D21H17/23 ,  D21H17/29 ,  D21H21/16 ,  D21H17/72

    Abstract: The invention concerns aqueous alkyldiketene dispersions containing an alkyldiketene, cationic starch with an amylopectin content of at least 95 % by wt. and the following anionic dispersants: (a) 0.05 to 1 .0 % by wt. of lignin sulphonic acid, condensation products of naphtalene sulphonic acid and formaldehyde, sulphonated polystyrene or salts or mixtures of such polymers and (b) 0.05 to 1.5 % by wt. of sulphuric acid half esters of alcohols with at least 10 C-atoms, mono- or diphosphoric acid half esters of alkoxylated alcohols with at least C-atoms, sulphuric acid half esters of alkoxylated alcohols with at least 10 C- atoms, mono- or diphosphoric acid esters of alkoxylated alcohols with at least 10 C-atoms, C12-C30 alkyl sulphonic acids or salts or mixtures of such compounds. The invention also concerns the use of such alkyldiketene dispersions as bulk size in the manufacture of paper, paperboard and cardboard, as well as in making cellulose fibres water-repellent.

    39.
    发明专利
    未知

    公开(公告)号：DE19512399A1

    公开(公告)日：1996-10-10

    申请号：DE19512399

    申请日：1995-04-03

    Applicant: BASF AG

    Inventor： ETTL ROLAND DR ,  LORENCAK PRIMOZ DR ,  REUTHER WOLFGANG DR ,  BONN JOHANN ,  CLERCQ ARNOLD DE DR

    IPC: D21H17/03 ,  D21H17/17 ,  D21H17/28 ,  D21H17/29 ,  D21H21/16

    Abstract: Paper sizing agent mixtures of: (A) finely divided aqueous dispersions of C14 to C22 alkyl diketenes obtainable by dispersing the alkyl diketenes in water in the presence of cationic starch with an amylopectin content of at least 95 wt.%, and (B) finely divided aqueous polymer dispersions forming a paper sizing agent, process for producing the paper sizing agent mixtures by mixing th e components (A) and (B) and the use of the paper sizing agent mixtures as mass and surface sizing agents for paper, pasteboard and cardboard.

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