公开(公告)号：ES2380321T3

公开(公告)日：2012-05-10

申请号：ES03784048

申请日：2003-07-23

Applicant: BASF SE

Inventor： BLUM RAINER ,  HEMEL RALF ,  MAHR NORBERT ,  LORZ RUDOLF

IPC: D21H23/10 ,  D21H23/18 ,  D21H17/37 ,  D21H17/45 ,  D21H17/68 ,  D21H21/10

Abstract: Procedimiento para la fabricación de papel, cartulina y cartón mediante corte de la pulpa de papel, adición de un sistema microparticular constituido por un polímero catiónico y un componente inorgánico finamente dividido a la pulpa de papel tras la última etapa de corte antes de la acumulación de material, deshidratación de la pulpa de papel con formación de hojas y secado de las hojas, caracterizado porque como polímero catiónico del sistema microparticular se emplean polímeros conteniendo poliacrilamidas catiónicas, unidades vinilamínicas y/o cloruro de polidialildimetilamonio con una masa molar media Mw de, en cada caso, por lo menos 500 000 Dalton y una densidad de carga de en cada caso, más de 4, 0 meq./g, siendo el sistema microparticular utilizado como agente retenedor libre de polímeros con una densidad de carga de más de 4 meq./g.

公开(公告)号：AT546587T

公开(公告)日：2012-03-15

申请号：AT03784048

申请日：2003-07-23

Applicant: BASF SE

Inventor： BLUM RAINER ,  HEMEL RALF ,  MAHR NORBERT ,  LORZ RUDOLF

IPC: D21H23/10 ,  D21H23/18 ,  D21H17/37 ,  D21H17/45 ,  D21H17/68 ,  D21H21/10

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.

公开(公告)号：DE502005003567D1

公开(公告)日：2008-05-15

申请号：DE502005003567

申请日：2005-03-14

Applicant: BASF SE

Inventor： ESSER ANTON ,  BLUM RAINER ,  KUHN JOACHIM ,  LEDUC MARC ,  HEMEL RALF

IPC: D21H17/34 ,  D21H17/37 ,  D21H17/56 ,  D21H21/02

Abstract: A process for the production of paper, board and cardboard by draining a paper stock containing interfering substances in the presence of polymers which contain vinylamine units and which have an average molar mass Mw of at least 1 million, a high-consistency stock first being prepared, at least one polymer containing vinylamine units and having an average molar mass Mw of at least 1 million and a degree of hydrolysis of from 1 to 20 mol % being metered into the high-consistency stock, the high-consistency stock being diluted to a low-consistency stock by adding water, and the low-consistency stock being drained, the polymers being hydrolyzed homo- or copolymers of N-vinylcarboxamides additives for reducing deposits in the wire part, press section and drying section of paper machines.

公开(公告)号：PT1529133E

公开(公告)日：2012-03-30

申请号：PT03784048

申请日：2003-07-23

Applicant: BASF SE

Inventor： MAHR NORBERT ,  BLUM RAINER ,  HEMEL RALF ,  LORZ RUDOLF

IPC: D21H23/10 ,  D21H23/18 ,  D21H17/37 ,  D21H17/45 ,  D21H17/68 ,  D21H21/10

公开(公告)号：AT391207T

公开(公告)日：2008-04-15

申请号：AT05716030

申请日：2005-03-14

Applicant: BASF SE

Inventor： ESSER ANTON ,  BLUM RAINER ,  KUHN JOACHIM ,  LEDUC MARC ,  HEMEL RALF

IPC: D21H17/34 ,  D21H17/37 ,  D21H17/56 ,  D21H21/02

Abstract: A process for the production of paper, board and cardboard by draining a paper stock containing interfering substances in the presence of polymers which contain vinylamine units and which have an average molar mass Mw of at least 1 million, a high-consistency stock first being prepared, at least one polymer containing vinylamine units and having an average molar mass Mw of at least 1 million and a degree of hydrolysis of from 1 to 20 mol % being metered into the high-consistency stock, the high-consistency stock being diluted to a low-consistency stock by adding water, and the low-consistency stock being drained, the polymers being hydrolyzed homo- or copolymers of N-vinylcarboxamides additives for reducing deposits in the wire part, press section and drying section of paper machines.