中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

229 records (took 0.033 seconds)

    METHOD FOR PRODUCING PAPER, PULPBOARD AND CARDBOARD
    142.
    发明专利
    METHOD FOR PRODUCING PAPER, PULPBOARD AND CARDBOARD 未知

    公开(公告)号：CA2286709A1

    公开(公告)日：1998-10-22

    申请号：CA2286709

    申请日：1998-04-02

    Applicant: BASF AG

    Inventor： MELZER JAROSLAV ,  MEIXNER HUBERT ,  LINHART FRIEDRICH

    IPC: D21H17/56 ,  D21H21/02

    Abstract: The invention relates to a method for producing, paper, pulpboard and cardboard from paper pulp containing sticky impurities by adding surfactants and cationic polymers with a load density of at least 1.5 meq/g (measured at pH 7) and a cationic polymer molar mass Mw of at least 15,000, and by dehydrating the pulp and fixing the sticky impurities in the finished paper.

    144.
    发明专利
    未知

    公开(公告)号：DE59308829D1

    公开(公告)日：1998-09-03

    申请号：DE59308829

    申请日：1993-11-16

    Applicant: BASF AG

    Inventor： SCHERR GUENTER ,  REUTHER WOLFGANG ,  LORENCAK PRIMOZ ,  MOENCH DIETMAR ,  LINHART FRIEDRICH ,  WEISER JUERGEN

    IPC: C08G69/48 ,  C08G18/32 ,  C08G18/60 ,  C08G59/14 ,  C08G73/00 ,  C08G73/02 ,  C08G73/04 ,  D21F1/66 ,  D21H11/14 ,  D21H17/46 ,  D21H17/54 ,  D21H17/56 ,  D21H21/10

    Abstract: PCT No. PCT/EP93/03205 Sec. 371 Date May 26, 1995 Sec. 102(e) Date May 26, 1995 PCT Filed Nov. 16, 1993 PCT Pub. No. WO94/12560 PCT Pub. Date Jun. 9, 1994.Condensates of polyalkylenepolyamines which are obtainable by (a) partial amidation of polyalkylenepolyamines and (b) condensation of the partially amidated polyalkylenepolyamines with bifunctional or polyfunctional crosslinking agents to give crosslinked polyalkylenepolyamines which, in 20% strength aqueous solution at 20 DEG C., have a viscosity of at least 100 mPa.s, processes for the preparation of the condensates of polyalkylenepolyamines by partial amidation of polyalkylenepolyamines with carboxylic acids, carboxylic esters, carboxylic anhydrides or carbonyl halides and crosslinking of the partially amidated polyalkylenepolyamines with bifunctional or polyfunctional crosslinking agents, from 0.001 to 10 parts by weight of a crosslinking agent being used per part by weight of the partially amidated polyalkylenepolyamines, and the use of the resulting condensates as drainage aids, flocculants, retention aids and fixing agents in papermaking.

    146.
    发明专利
    未知

    公开(公告)号：DE59306701D1

    公开(公告)日：1997-07-10

    申请号：DE59306701

    申请日：1993-12-16

    Applicant: BASF AG

    Inventor： SCHERR GUENTER ,  REUTHER WOLFGANG ,  MOENCH DIETMAR ,  LINHART FRIEDRICH ,  WEISER JUERGEN

    IPC: C08G18/58 ,  C08G18/60 ,  C08G59/14 ,  C08G59/40 ,  C08G73/00 ,  C08G73/02 ,  D21H17/55 ,  D21H17/56 ,  D21H21/10

    Abstract: PCT No. PCT/EP93/03573 Sec. 371 Date Jun. 26, 1995 Sec. 102(e) Date Jun. 26, 1995 PCT Filed Dec. 16, 1993 PCT Pub. No. WO94/14873 PCT Pub. Date Jul. 7, 1994There are described water-soluble condensation products of amino-containing compounds and crosslinkers, obtainable by reacting (a) polyalkylenepolyamines, polyamidoamines, ethylene-imine-grafted polyamidoamines, polyetheramines and mixtures thereof, with (b) monethylenically unsaturated carboxylic acids, salts, esters, amides or nitriles of monoethylenically unsaturated carboxylic acids, chlorocarboxylic acids and/or glycidyl compounds such as glycidic acid, glycidamide or glycidyl esters, and (c) at least bifunctional crosslinkers having a halo-hydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as functional group, to form water-soluble condensation products having a viscosity of at least 100 mPas in a 20% strength by weight aqueous solution at 20 DEG C., processes for preparing the water-soluble condensation products by reacting the abovementioned compounds of groups (a), (b) and (c), and the use of the condensation products as drainage, flocculation and retention aids in papermaking.

    AQUEOUS PIGMENT DISPERSIONS AND THEIR USE IN THE PRODUCTION OF FILLED PAPER
    148.
    发明专利
    AQUEOUS PIGMENT DISPERSIONS AND THEIR USE IN THE PRODUCTION OF FILLED PAPER 未知

    公开(公告)号：CA2171725A1

    公开(公告)日：1995-04-20

    申请号：CA2171725

    申请日：1994-10-06

    Applicant: BASF AG

    Inventor： AUHORN WERNER ,  WEISER JUERGEN ,  LINHART FRIEDRICH ,  MOENCH DIETMAR ,  LORENCAK PRIMOZ

    IPC: C09K23/52 ,  D21H17/56 ,  D21H17/54 ,  D21H17/55 ,  D21H17/74

    Abstract: Aqueous pigment slurries which contain up to 80 % by weight of a finely divided pigment in dispersed form and from 0.1 to 5 % by weight of a polyalkylenepolyamine having a molecular weight of at least 300 or water-soluble reaction products of (a) polyalkylenepolyamines having a molecular weight of at least 300 and/or polyamidoamines grafted with ethyleneimine and (b) bifunctional or polyfunctional crosslinking agents which have a halohydrin, glycidyl, aziridine or isocyanate unit or a halogen atom as a functional group, the reaction products, in 25 % strength by weight aqueous solution at 20.degree.C, having a viscosity of at least 100 mPa.s, are used as an additive to the paper stock in the production of fillercontaining paper.

Patent Agency Ranking