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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：FI893232A0
公开(公告)日：1989-07-03
申请号：FI893232
申请日：1989-07-03
Applicant: BASF AG
Inventor： HEMEL RALF , MELZER JAROSLAV
Abstract: The maximum amounts of the retention-influencing variable stock components which can be added are determined as a function of a predetermined degree of flocculation and typical values of the stock suspension with the aid of a mathematical relationship, and control signals for metering retention aids are derived from the amounts so that the greatest possible retention can be achieved without exceeding a set-point for the degree of flocculation.
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公开(公告)号：CA2558277C
公开(公告)日：2013-11-12
申请号：CA2558277
申请日：2005-03-14
Applicant: BASF AG
Inventor： ESSER ANTON , BLUM RAINER , KUHN JOACHIM , LEDUC MARC , HEMEL RALF
Abstract: The inventive method for producing paper, paperboard and cardboard by removing interfering substance-containing water from a paper pulp in the presence of polymers containing vinylamine units whose mean molecular mass Mw is equal or greater than one million. Said method consists in preparing, at first a high-density pulp, introducing a doses quantity at least of one type polymer which contains vinylamine units and whose mean molecular mass Mw is equal or greater than one million and a degree of hydrolysis ranges from 1 to 20 mol % in the high-density pulp, in diluting said high-density pulp by adding water until a low-density pulp is obtained and in dewatering said low-density pulp. Said invention also relates to the use of homo-or copolymers of N-vinyl carboxylic acid amides having a degree of hydrolysis ranging from 1 to 20 mol % and a mean molecular mass Mw equal or greater than one million for producing paper, paperboard and cardboard in the form of an additive to the high-density pulp containing interfering substances in order to reduce deposits formed in the sieving, pressing and drying areas of paper machines.
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公开(公告)号：NO20075988L
公开(公告)日：2007-12-20
申请号：NO20075988
申请日：2007-11-23
Applicant: BASF AG
Inventor： BLUM RAINER , SCHMIDT-THÜMMES JÜRGEN , HAMERS CHRISTOPH , MAHR NORBERT , MECK DIETER , HEMEL RALF , GISPERT NORBERT
IPC: D21H17/69
Abstract: Fremgangsmåte for fremstilling av papir og papirprodukter inneholdende fyllstoff, ved tilsetning av en vandig suspensjon av minst ett findelt polymerpigmenthybrid til en papirmasse og drenering av papirmassen med dannelse av ark, der polymerpigmenthybridet kan oppnås ved finmaling av en vandig suspensjon av minst ett uorganisk pigment i nærvær av minst ett bindemiddel, og, hvis hensiktsmessig, ved tørking av den vandige suspensjonen som oppnås ved å finfordele det tørkete polymerpigmenthybridet igjen i vann, samt anvendelse av polymerpigmenthybrider, som oppnås på denne måten, som et fyllstoff for fremstilling av papir og papirprodukter inneholdende fyllstoff.
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Patent Agency Ranking
公开(公告)号：DE10236252B4
公开(公告)日：2005-06-30
申请号：DE10236252
申请日：2002-08-07
Applicant: BASF AG
Inventor： BLUM RAINER , HEMEL RALF , MAHR NORBERT , LORZ RUDOLF
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公开(公告)号：AU2003250139A1
公开(公告)日：2004-02-25
申请号：AU2003250139
申请日：2003-07-23
Applicant: BASF AG
Inventor： BLUM RAINER , HEMEL RALF , MAHR NORBERT , LORZ RUDOLF
Abstract: A process for preparation of paper, pasteboard, or cardboard involving cutting of the paper pulp, addition of microparticles of cationic polymer, and a finely divided inorganic component after the last cutting step and before pulp swelling, dewatering of the pulp, and sheet formation and drying of the sheets is new. A process for preparation of paper, pasteboard, or cardboard involving cutting of the paper pulp, addition of microparticles of cationic polymer, and a finely divided inorganic component after the last cutting step and before pulp swelling, dewatering of the pulp, and sheet formation and drying of the sheets. The cationic polymer of the microparticle system is cationic polyacrylamide, polymer containing vinylamine units, and/or polydiallyl dimethylammonium chloride containing polymer of mean mol.wt. 500,000 Dalton, and maximum charge density 4.0 meq/g, where the microparticle system free from polymers of charging density (sic) more than 4 meq/g is used as the retention agent.
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公开(公告)号：ES2042882T3
公开(公告)日：1993-12-16
申请号：ES89110565
申请日：1989-06-10
Applicant: BASF AG
Inventor： HEMEL RALF , LINHART FRIEDRICH DR
Abstract: A flow-through cuvette (1), through which the sample flow (2) - surrounded by an enveloping flow (3) - is passed, is equipped with an optical laser measuring device (4-7). For use in systems under pressure, a pressure and quantity stabiliser (9-11) is connected upstream of the input (8) for the enveloping flow medium of the cuvette, and a controller (13, 14, 16, 17) for the quantity of the sample flow and enveloping flow is connected downstream of the output (12) of the cuvette.
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公开(公告)号：FI893232A
公开(公告)日：1990-01-07
申请号：FI893232
申请日：1989-07-03
Applicant: BASF AG
Inventor： HEMEL RALF , MELZER JAROSLAV
Abstract: The maximum amounts of the retention-influencing variable stock components which can be added are determined as a function of a predetermined degree of flocculation and typical values of the stock suspension with the aid of a mathematical relationship, and control signals for metering retention aids are derived from the amounts so that the greatest possible retention can be achieved without exceeding a set-point for the degree of flocculation.
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公开(公告)号：DE3820902A1
公开(公告)日：1989-12-28
申请号：DE3820902
申请日：1988-06-21
Applicant: BASF AG
Inventor： HEMEL RALF , LINHART FRIEDRICH DR
Abstract: A flow-through cuvette (1), through which the sample flow (2) - surrounded by an enveloping flow (3) - is passed, is equipped with an optical laser measuring device (4-7). For use in systems under pressure, a pressure and quantity stabiliser (9-11) is connected upstream of the input (8) for the enveloping flow medium of the cuvette, and a controller (13, 14, 16, 17) for the quantity of the sample flow and enveloping flow is connected downstream of the output (12) of the cuvette.
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