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公开(公告)号：CA2203931C
公开(公告)日：2006-02-21
申请号：CA2203931
申请日：1995-10-17
Applicant: BASF AG
Inventor： REUTHER WOLFGANG , HARTMANN HEINRICH , MEIXNER HUBERT , NILZ CLAUDIA , DENZINGER WALTER , NIESSNER MANFRED , LINHART FRIEDRICH , SCHUHMACHER RUDOLF , STANGE ANDREAS
Abstract: Starch is cationically modified by reacting starch with polymers which contain amino and/or ammonium groups in an aqueous medium at from 115 to 180.degree.C under superatmospheric pressure in the absence of oxidizing agents, polymerization initiators and alkali, by a process in which the reaction is carried out in a manner such that a reduction in molecular weight occurs in not more than 10% by weight of the starch, and the reaction products thus obtainable are used as dry strength agents for paper.
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公开(公告)号：AU2002361983A1
公开(公告)日：2003-06-30
申请号：AU2002361983
申请日：2002-12-06
Applicant: BASF AG
Inventor： BLUM THIERRY , HEMEL RALF , BOHLMANN KLAUS , LINHART FRIEDRICH
Abstract: A method for the production of paper and cardboard by dewatering pulp in presence of cationic polymer(s) on a screen involves adding to the pulp (before sheet forming) a mixture of essentially linear, cationic polyelectrolyte(s) (I) and an optical brightener (II), using at least 2 parts by weight (pts. wt.) (I) to 1 pt. wt. (II). An Independent claim is also included for paper, pasteboard and cardboard obtained by this method.
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公开(公告)号：CA2469758A1
公开(公告)日：2003-06-26
申请号：CA2469758
申请日：2002-12-06
Applicant: BASF AG
Inventor： HEMEL RALF , LINHART FRIEDRICH , BOHLMANN KLAUS , BLUM THIERRY
Abstract: The invention relates to a method for producing paper, paperboard and cardboard by draining the pulp on a sieve, in the presence of at least one cationic polymer. Before sheets are formed, a mixture of at least one essentially linear, cationic polyelectrolyte and an optical brightening agent is added to the pulp, said mixture containing at least two parts by weight of the polyelectrolyte per part by weight of the optical brightening agent.
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公开(公告)号：DE50002206D1
公开(公告)日：2003-06-18
申请号：DE50002206
申请日：2000-08-16
Applicant: BASF AG
Inventor： LINHART FRIEDRICH , DIRKS BERND , TRESCH RAINER , MOHR BERNHARD , FEHRINGER DIETRICH
IPC: C08G69/10 , C08G18/60 , C08G59/40 , C08G69/48 , D21H17/21 , D21H17/22 , D21H17/54 , D21H21/10 , D21H21/18 , D21H21/22
Abstract: Paper, board and cardboard are produced by a process in which a paper stock is drained in the presence of condensates of basic amino acids with sheet formation. In particular, homo- and cocondensates of lysine and the crosslinked condensates obtainable therefrom by reaction with crosslinking agents are used in amounts of from 0.01 to 5% by weight, based on dry paper stock, as a means of increasing the dry and wet strength and the absorptivity of paper, for fixing anionic dyes and interfering substances in the paper, for increasing the drainage rate and the retention as well as the efficiency of synthetic anionic and cationic retention aids in the production of paper, board and cardboard by draining a paper stock with sheet formation.
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公开(公告)号：AU2002333720A1
公开(公告)日：2003-03-18
申请号：AU2002333720
申请日：2002-08-27
Applicant: BASF AG
Inventor： WENDKER MARTIN , BLUM THIERRY , KAUB HANS-PETER , GEIGER STEFFEN , CHAMP SIMON , LINHART FRIEDRICH , MECK DIETER
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Patent Agency Ranking
公开(公告)号：CA2459235A1
公开(公告)日：2003-03-13
申请号：CA2459235
申请日：2002-08-27
Applicant: BASF AG
Inventor： BLUM THIERRY , KAUB HANS-PETER , CHAMP SIMON , MECK DIETER , LINHART FRIEDRICH , WENDKER MARTIN , GEIGER STEFFEN
IPC: C08F8/00 , C08F220/60 , C08F226/00 , C08K5/00 , D21H19/56 , D21H21/30 , B41M5/00 , C08K5/42
Abstract: The invention relates to a method for producing recording materials. Accordi ng to the invention, mixtures A, containing i) at least one optical brightening agent, ii) at least one cationic polyelectrolyte, and iii) at least one solvent, are applied to the recording material.
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公开(公告)号：CA2456934A1
公开(公告)日：2003-02-27
申请号：CA2456934
申请日：2002-08-07
Applicant: BASF AG
Inventor： BLUM THIERRY , LINHART FRIEDRICH , FRENZEL STEPHAN
Abstract: The invention relates to a method for the production of a paper coated with a slip containing an optical brightener, whereby raw paper or pre-coated paper is treated with at least one substance which reinforces the efficacy of optical brighteners, before application of the slip containing the optical brightener.
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公开(公告)号：CA2428356A1
公开(公告)日：2002-05-16
申请号：CA2428356
申请日：2001-11-02
Applicant: BASF AG
Inventor： ULLRICH HEINRICH , LINHART FRIEDRICH , DIRKS BERND , BLUM THIERRY , WENDKER MARTIN , FRENZEL STEFAN , MAHR NORBERT
Abstract: The invention relates to paper coating slip containing polymers or copolymers as additives. Said polymers and copolymers have N-vinyl formamide polymerised therein. The invention also relates to the use of said paper coating slip.
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公开(公告)号：NO990078D0
公开(公告)日：1999-01-08
申请号：NO990078
申请日：1999-01-08
Applicant: BASF AG
Inventor： DYLLICK-BRENZINGER RAINER , MEIXNER HUBERT , LINHART FRIEDRICH , M NCH DIETMAR , GERBER KLAUS-DIETER , DIRKS BERND , BAUMANN PETER
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公开(公告)号：AU7521698A
公开(公告)日：1998-11-11
申请号：AU7521698
申请日：1998-04-02
Applicant: BASF AG
Inventor： LINHART FRIEDRICH , MELZER JAROSLAV , MEIXNER HUBERT
Abstract: Paper, board and cardboard are produced from paper stocks which contain tacky impurities by the addition of surfactants and cationic polymers having a charge density of at least 1.5 meq/g (measured at pH 7) and a molar mass Mw of the cationic polymers of at least 15,000 and drainage of the paper stocks with fixation of the tacky impurities in the paper produced.
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