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Patent Agency Ranking
公开(公告)号：EP3234259A1
公开(公告)日：2017-10-25
申请号：EP15820441.2
申请日：2015-12-04
Applicant: BASF SE
Inventor： HAEHNLE, Hans-Joachim , HAMERS, Christoph , ESSER, Anton , MEIXNER, Hubert , BUCHAN, Matthew , SCHALL, Norbert , SPANGE, Stefan , TROMMLER, Katja , WÜRFEL, Hendrik , SEIFERT, Susan , WALTHER, Tina
CPC classification number: D21H17/42 , B01F3/1214 , B01F3/223 , B01F2215/0078 , C08L2201/54 , C09D139/02 , D21H11/04 , D21H11/08 , D21H15/10 , D21H17/34 , D21H17/35 , D21H17/37 , D21H17/375 , D21H17/41 , D21H17/44 , D21H17/63 , D21H21/10 , D21H23/04 , D21H25/04
Abstract: The invention relates to a method for producing paper or cardboard, which comprises adding (I) an aqueous composition having a pH ≤6 and (II) at least one water-soluble polymeric anionic compound to a paper stock having a pH in the range from 6 to 8, and then dewatering the paper stock, forming sheets and drying, where the aqueous composition comprises (a) polymers having primary amino groups and/or amidine groups, with a total content of these groups of ≥1.5 meq/g polymer, and (b) 0.01 to 50 mol% of 1,4-cyclohexanedione (b), based on the total amount of primary amino groups and/or amidine groups in the polymers, and also to the paper or cardboard produced accordingly.
Abstract translation: 本发明涉及一种生产纸或纸板的方法，该方法包括将（I）pH≤6的含水组合物和（II）至少一种水溶性聚合阴离子化合物加入到具有pH范围为 6至8，然后脱水纸料，形成片材并干燥，其中含水组合物包含（a）具有伯氨基和/或脒基团的聚合物，这些基团的总含量≥1.5meq/ g聚合物， 和（b）基于聚合物中伯氨基和/或脒基团的总量，0.01-50mol％的1,4-环己烷二酮（b）以及相应制备的纸或纸板。
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公开(公告)号：EP2809845A2
公开(公告)日：2014-12-10
申请号：EP13701667.1
申请日：2013-01-31
Applicant: BASF SE
Inventor： GRAY, Christopher, Alan , MOORMANN-SCHMITZ, Antonius , MEIXNER, Hubert , SANCHEZ CERRO, Luis Miguel , JEHN-RENDU, Christian , MüHLENBERND, Thomas
IPC: D21H21/10
CPC classification number: D21H27/30 , D21H17/36 , D21H17/375 , D21H17/56 , D21H17/74 , D21H21/10 , D21H23/26
Abstract: The present invention relates to a process of making paper or paperboard in which a cellulosic thin stock is provided and subjected to one or more shear stages and then drained and a moving screen to form a sheet which is dried, wherein the process employs a retention system which is applied to the thin stock, said retention system comprising as components i) a blend of different cationic polymers and ii) a microparticulate material, in which the blend of cationic polymers comprises, a) a cationic polymer having a charge density of at least 3 mEq per gram and a molar mass of greater than 700,000 Da, b) a cationic polymer having a charge density of below 3 mEq per gram and an intrinsic viscosity of at least 3 dl/g, wherein one of the components of the retention system is dosed into the thin stock after the final shearing stage and the other is dosed into the thin stock before the final shearing stage.
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公开(公告)号：EP2809845B1
公开(公告)日：2019-01-16
申请号：EP13701667.1
申请日：2013-01-31
Applicant: BASF SE
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公开(公告)号：EP2943615A1
公开(公告)日：2015-11-18
申请号：EP14738178.4
申请日：2014-01-09
Applicant: BASF SE
Inventor： GRAY, Christopher Alan , MOORMANN-SCHMITZ, Antonius , MEIXNER, Hubert , SANCHEZ CERRO, Luis Miguel , MüHLENBERND, Thomas , JEHN-RENDU, Christian
CPC classification number: D21H17/74 , D21H11/20 , D21H17/375 , D21H17/44 , D21H17/45 , D21H17/55 , D21H17/56 , D21H17/68 , D21H21/10 , D21H23/04 , D21H23/18
Abstract: Process for the Manufacture of Paper and Paperboard The present invention relates to a process of making paper or paperboard in which a cellulosic thin stock is provided and subjected to one or more shear stages and then drained and a moving screen to form a sheet which is dried, wherein the process employs a retention system which is applied to the thin stock, said retention system comprising as components i) a blend of different cationic polymers and ii) a microparticulate material, in which the blend of cationic polymers comprises, a) a cationic polymer having a charge density of from 0.5 and below 3 mEq per gram and a molar mass of greater than 700,000 Da, which cationic polymer is selected from polymers containing vinyl amine units and polyethylenimine, b) a cationic polymer having a charge density of below 3 mEq per gram and an intrinsic viscosity of at least 3 dl/g, wherein one of the components of the retention system is dosed into the thin stock after the final shearing stage and the other is dosed into the thin stock before the final shearing stage.
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5.发明授权VERFAHREN ZUR HERSTELLUNG VON PAPIER, PAPPE UND KARTON MIT HOHER TROCKENFESTIGKEIT 失效用于生产纸浆，纸和纸板具有高的干强度
公开(公告)号：EP0972110B2
公开(公告)日：2009-03-11
申请号：EP98921399.6
申请日：1998-03-26
Applicant: BASF SE
Inventor： DYLLICK-BRENZINGER, Rainer , LORENCAK, Primoz , MEIXNER, Hubert , BAUMANN, Peter , KRÜGER, Ellen , STANGE, Andreas , RÜBENACKER, Martin
CPC classification number: D21H21/10 , D21H17/29 , D21H17/45 , D21H17/455 , D21H17/55 , D21H17/56 , D21H21/18 , D21H23/765
Abstract: The invention relates to a method for producing high dry-strength paper, pulpboard and cardboard by adding cationic, anionic and/or amphoteric starch as a dry-strength agent to the paper material, dehydrating the paper material to form sheets in the presence of cationic polymers as starch retention agents, and using cationic polymer retention agents to increase retention of dry-strength agents made from cationic, anionic and/or amphoteric starch during the production of paper, pulpboard and cardboard.
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