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    33.
    发明专利
    未知

    公开(公告)号：NO880856D0

    公开(公告)日：1988-02-26

    申请号：NO880856

    申请日：1988-02-26

    Applicant: BASF AG

    Inventor： DEGEN HANS-JURGEN ,  PFOHL SIGBERG ,  WEBERNDOERFER VOLKMAR ,  REHMER GERD ,  KROENER MICHAEL ,  STANGE ANDREAS

    IPC: D21H17/34 ,  D21H17/28 ,  D21H17/29 ,  D21H17/37 ,  D21H17/45 ,  D21H17/56 ,  D21H21/18 ,  D21H

    Abstract: Paper and paperboard of high dry strength are produced by adding a dry strength enhancer to the paper stock and dewatering the paper stock with sheet formation by using as the dry strength enhancer a mixture of a cationic polymer which contains as characteristic monomers copolymerized units of (a) diallyldimethylammonium chloride, (b) N-vinylamine or (c) a substituted or unsubstituted N-vinylimidazoline and has a K value of not less than 30, and natural potato starch which is converted into a water-soluble form by heating in an aqueous medium at above the gelatinization temperature of natural potato starch in the absence of any oxidizing agents or alkali.

    36.
    发明专利
    未知

    公开(公告)号：FR2784603A1

    公开(公告)日：2000-04-21

    申请号：FR9912565

    申请日：1999-10-08

    Applicant: BASF AG

    Inventor： DOBBELAAR JOHANNES ,  REHMER GERD ,  HUMMER WOLFGANG ,  BACHER REINHARD

    IPC: B01F15/00 ,  B01J4/00 ,  B08B7/00 ,  B08B9/08 ,  B01F15/02 ,  B01F1/00 ,  B01F3/12

    Abstract: A method of emptying vessels containing dispersions, solutions or suspensions of polymers in which during the emptying process the liquid medium also used to take up the polymers into the dispersion, solution or suspension is passed into the space within the vessel that is not filled by the solution, dispersion or suspension, wherein the liquid medium used to take up the polymers into the dispersion, solution or suspension is introduced in vapor form.

    38.
    发明专利
    未知

    公开(公告)号：FI104090B1

    公开(公告)日：1999-11-15

    申请号：FI912253

    申请日：1991-05-09

    Applicant: BASF AG

    Inventor： REHMER GERD ,  AUCHTER GERHARD ,  JAEGER HELMUT

    IPC: C08F20/12 ,  C08F2/50 ,  C08F8/00 ,  C08F8/14 ,  C08F8/30 ,  C08F8/32 ,  C08F20/34 ,  C08F20/36 ,  C08F20/52 ,  C08F20/58 ,  C08F220/10 ,  C08F220/12 ,  C09J4/00 ,  C09J4/02 ,  C08F20/18 ,  C08F265/06 ,  C09J133/06

    Abstract: Synthetic resins are obtainable by chemically bonding one or more compounds of the general formula I (* CHEMICAL STRUCTURE *) (I) where R1 is -OH, -NH2, (* CHEMICAL STRUCTURE *) -NHR3 or (* CHEMICAL STRUCTURE *) R2 is -H, -CH3 or -C2H5, R3 is -CmH2m+1, where m is from 1 to 6, R4 is -H or -CH3 and n is from 1 to 12, via the oxygen or nitrogen atom of R1 to one or more polymers A which consist of a) from 50 to 100% by weight of one or more esters of acrylic or methacrylic acid with monohydric alcohols of 1 to 18 carbon atoms or a mixture of these esters (monomers a) and b) from 0 to 50% by weight of other copolymerizable monomers (monomers b) in polymerized form, in amounts such that the synthetic resin contains from 0.01 to 1 mole of double bonds per kg of polymer A. After exposure to ultraviolet light or to electrons, these synthetic resins are suitable as contact adhesives.

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