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    Antifoams for the paper industry, based on oil-in-water emulsions
    25.
    发明专利
    Antifoams for the paper industry, based on oil-in-water emulsions 未知

    公开(公告)号：AU648687B2

    公开(公告)日：1994-04-28

    申请号：AU2124492

    申请日：1992-08-21

    Applicant: BASF AG

    Inventor： WEGNER BRIGITTE ,  OPPENLAENDER KNUT ,  SCHUHMACHER RUDOLF ,  HOHMANN ANDREAS ,  DRALLE GABRIELE

    IPC: C09K23/00 ,  B01J13/00 ,  C09K23/42 ,  D21C3/28 ,  D21D1/20 ,  D21H17/00 ,  D21H17/14 ,  D21H21/12 ,  D21H21/16

    Abstract: In anti-foams for the paper industry, based on oil-in-water emulsions, the oil phase makes up 5 to 50 % by weight of the bulk of the emulsion and contains (a) an alcohol having at least 12 carbon atoms, fatty acid esters of alcohols having at least 22 carbon atoms and C1- to C36-carboxylic acids, distillation residues which are obtainable in the production of alcohols having a higher carbon number by oxo synthesis or by the Ziegler process and which may be alkoxylated, mixtures of the said compounds and/or (b) a fatty acid ester of C12- to C22-carboxylic acids with monohydric to trihydric C1- to C18-alcohols and, if appropriate, (c) a hydrocarbon having a boiling point above 200 DEG C or fatty acids having 12 to 22 carbon atoms in combination with (d) 1 to 80 % by weight of polyglycerol esters which can be prepared by an at least 20% esterification of polyglycerol mixtures which contain, as essential constituents, diglycerol, triglycerol, tetraglycerol and, if appropriate, more highly condensed polyglycerols, with saturated or unsaturated C12- to C36-fatty acids. i

    26.
    发明专利
    未知

    公开(公告)号：FI113074B

    公开(公告)日：2004-02-27

    申请号：FI923754

    申请日：1992-08-20

    Applicant: BASF AG

    Inventor： WEGNER BRIGITTE ,  OPPENLAENDER KNUT ,  SCHUHMACHER RUDOLF ,  HOHMANN ANDREAS ,  DRALLE-VOSS GABRIELE

    IPC: B01J13/00 ,  C09K23/42 ,  D21C3/28 ,  D21D1/20 ,  D21H17/00 ,  C09K23/00 ,  D21H17/14 ,  D21H21/12 ,  B01D19/04

    Abstract: In anti-foams for the paper industry, based on oil-in-water emulsions, the oil phase makes up 5 to 50 % by weight of the bulk of the emulsion and contains (a) an alcohol having at least 12 carbon atoms, fatty acid esters of alcohols having at least 22 carbon atoms and C1- to C36-carboxylic acids, distillation residues which are obtainable in the production of alcohols having a higher carbon number by oxo synthesis or by the Ziegler process and which may be alkoxylated, mixtures of the said compounds and/or (b) a fatty acid ester of C12- to C22-carboxylic acids with monohydric to trihydric C1- to C18-alcohols and, if appropriate, (c) a hydrocarbon having a boiling point above 200 DEG C or fatty acids having 12 to 22 carbon atoms in combination with (d) 1 to 80 % by weight of polyglycerol esters which can be prepared by an at least 20% esterification of polyglycerol mixtures which contain, as essential constituents, diglycerol, triglycerol, tetraglycerol and, if appropriate, more highly condensed polyglycerols, with saturated or unsaturated C12- to C36-fatty acids. i

    28.
    发明专利
    未知

    公开(公告)号：BR0113153A

    公开(公告)日：2003-07-08

    申请号：BR0113153

    申请日：2001-08-01

    Applicant: BASF AG

    Inventor： KUEHN INGOLF ,  SCHUHMACHER RUDOLF

    IPC: C08B31/00 ,  C08F2/22 ,  C08F251/00 ,  C08F251/02 ,  C09D151/02 ,  D21H17/28 ,  D21H17/43 ,  D21H21/16 ,  C08F220/00 ,  C08L3/00 ,  D21H17/00

    Abstract: A polymer dispersion is prepared by copolymerization of from 20 to 70 parts by weight of a monomer mixture comprisinga) from 2.5 to 100% by weight of one or more (meth)acrylates of monohydric, saturated C3-C8-alcohols as monomers A andb) from 0 to 97.5% by weight of one or more further ethylenically unsaturated monomers as monomers Bin 100 parts by weight of an aqueous solution which contains from 5 to 35% by weight of a starch or of a starch derivative by emulsion polymerization in the presence of an initiator containing peroxide groups, by a process in which the initiator and monomers are metered in continuously and wherein, a first amount of initiator is metered in over a first feed period of from 5 to 60 minutes and a second amount of initiator is metered in over a second feed period of from 15 to 180 minutes, the first amount of initiator being greater than the second amount of initiator.

    29.
    发明专利
    未知

    公开(公告)号：DE10039388A1

    公开(公告)日：2002-02-21

    申请号：DE10039388

    申请日：2000-08-11

    Applicant: BASF AG

    Inventor： KUEHN INGOLF ,  SCHUHMACHER RUDOLF

    IPC: C08B31/00 ,  C08F2/22 ,  C08F251/00 ,  C08F251/02 ,  C09D151/02 ,  D21H17/28 ,  D21H17/43 ,  D21H21/16 ,  C08F20/18 ,  D21H17/37

    Abstract: The invention relates to a method for producing a polymer dispersion by copolymerisation of 20 - 70 weight parts of a monomer mixture comprising c) 2.5 - 100 wt. % of one or more (meth) acrylic acid esters of monovalent, saturated C3-C8 alcohols as monomers A, and 0 - 97.5 wt. % of one or more other ethylenlically unsaturated monomers as monomers B in 100 weight parts of an aqueous solution which contains 5 - 35 wt.- % of a starch or a starch derivative, in emulsion polymerisation in the presence of an initiator containing peroxide groups, whereby the initiator and monomer can be continually dosed. In a first supply period of 5 - 60 minutes a first amount of an initiator is dosed and in a second supply period of 15 - 180 minutes a second amount of an initiator is dosed. The first amount of initiator is greater than the second amount of initiator.

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