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    41.
    发明专利
    未知

    公开(公告)号：NO813566L

    公开(公告)日：1982-04-26

    申请号：NO813566

    申请日：1981-10-22

    Applicant: BASF AG

    Inventor： REICHEL FRITZ ,  RICHTER KONRAD ,  HOEHR LOTHAR

    IPC: C08F2/06 ,  C08F220/34 ,  C08F246/00 ,  D21H17/42 ,  D21H17/45 ,  D21H21/16 ,  C08F

    Abstract: 1. A finely divided polymer dispersion which contains polymerized units of nitrogen-containing monomers, and is obtained by a two-stage polymerization reaction, wherein, in the first polymerization stage, a low molecular weight prepolymer, which has a viscosity of from 1.06 to 1.40 (measured in an Ubbelohde viscometer) in a 1% strength solution of a mixture of 99 parts by weight of dimethyl formamide and 1 part by weight of glacial acetic acid at 20 degrees C, is prepared in a water-miscible solvent, which may contain up to 15% by weight of water, in the manner of a solution copolymerization from a monomer mixture which contains (a) per mole of a nitrogen-containing monomer of the formula see diagramm : EP0051144,P13,F1 or see diagramm : EP0051144,P13,F3 where A is O or NH, B is Cn H2n , n being from 1 to 8, R**1 and R**2 are each Cm H2m+1 , m being from 1 to 4, R**3 is H or CH3 , X4 **- is OH**- , Cl**- , Br**- or CH3 -OSO3 H**- , and R**4 is Cm H2m+1 , m being from 1 to 4, (b) 2.5 to 10 moles of at least one nonionic, hydrophobic, ethylenically unsaturated monomer which, if it is polymerized on its own, forms a hydrophobic polymer, (c) 0.5 to 1.5 moles of an ethylenically unsaturated carboxylic acid or maleic anhydride, and (d) 0 to 7 moles of a nonionic, hydrophilic, ethylenically unsaturated monomer, the solution of the prepolymer is diluted with water in a weight ratio of from 1:3 to 1:50 and, in the second polymerization stage, 1 to 32 parts by weight of at least one nonionic, hydrophobic, ethylenically unsaturated monomer, which is the same as monomer (b) of the prepolymer, are polymerized per part by weight of the solution polymer in this polymer solution in the manner of an emulsion polymerization in the presence of a usual amount of a water-soluble polymerization initiator.

    SURFACE-SIZING PAPER
    45.
    发明专利
    SURFACE-SIZING PAPER 未知

    公开(公告)号：AU7513374A

    公开(公告)日：1976-05-13

    申请号：AU7513374

    申请日：1974-11-07

    Applicant: BASF AG

    Inventor： SCHARF EMIL ,  NAARMANN HERBERT ,  REICHEL FRITZ

    IPC: C09J123/02 ,  D21H17/07 ,  D21H17/35 ,  D21H17/43 ,  D21H1/28

    Abstract: Process for the manufacture of surface-sized papers by impregnating a paper with a solution containing a water-soluble salt of a random polymer based on alpha -olefins and ethylenically unsaturated acids and a compound of the formula: R1 R-CO-N ANGLE R2 wherein R is alkyl, aryl or a radical of the formula: R1 ANGLE N- R2 and R1 and R2 each independently denotes H, R or a radical of the formula:

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