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1. 发明公开

EP2074257A1 TREATMENT OF PULP 有权
标题翻译：纸浆处理
公开(公告)号：EP2074257A1
公开(公告)日：2009-07-01
申请号：EP07794198.7
申请日：2007-08-29
申请人： Akzo Nobel N.V. , EKA Chemicals AB
发明人： GRESCHIK, Thomas, Christopher , JOHANSSON-VESTIN, Hans , FÄGERSTEN, Håkan
IPC分类号： D21C9/18 , D21H21/10
CPC分类号： D21C9/18 , D21C9/002 , D21H21/143
摘要： The present invention relates to a method of treating an aqueous suspension of bleached pulp derived from an alkaline pulping process comprising dewatering and drying said suspension, wherein the pH of the suspension to be treated ranges from about 6.5 to 5 about 12.

2. 发明公开

EP1242308A1 SILICA-BASED SOLS 有权
标题翻译：硅胶基SOLS
公开(公告)号：EP1242308A1
公开(公告)日：2002-09-25
申请号：EP00986107.1
申请日：2000-11-29
申请人： Akzo Nobel N.V. , Eka Chemicals AB
发明人： GREENWOOD, Peter , LINSTEN, Magnus, Olof , JOHANSSON-VESTIN, Hans
IPC分类号： C01B33/149 , D21H21/10 , D21H17/68 , D21H23/14 , C02F1/52
CPC分类号： C02F1/56 , B01J13/0034 , B01J13/0039 , C01B33/149 , C02F1/545 , C02F2103/28 , D21H17/68 , D21H21/10
摘要： The invention relates to an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention further relates to a process for the production of an aqueous silica-based sol comprising a nitrogen-containing organic compound which comprises incorporating a nitrogen-containing organic compound into a silica-based sol containing silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention also relates to the use of an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica as a flocculating agent in the production of pulp and paper and in water purification. The invention further relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optional fillers, which comprises adding to the suspension (i) an aqueous silica-based sol comprising an organic nitrogen-containing compound and (ii) at least one charged organic polymer, forming and draining the suspension on a wire.
摘要翻译：本发明涉及包含含氮有机化合物和二氧化硅基颗粒的含水二氧化硅基溶胶，其比表面积至少为300平方米/克二氧化硅。本发明还涉及包含含氮有机化合物的含水二氧化硅基溶胶的制备方法，该方法包括将含氮有机化合物掺入含二氧化硅基颗粒的二氧化硅基溶胶中，所述二氧化硅基颗粒的比表面积为每克二氧化硅至少300平方米。本发明还涉及包含含氮有机化合物和比表面积为至少300平方米/克二氧化硅的二氧化硅基颗粒的含水二氧化硅基溶胶在制备纸浆中作为絮凝剂的用途和纸张和水净化。本发明进一步涉及由含有纤维素纤维和任选填料的含水悬浮液生产纸的方法，其包括向悬浮液中加入（i）包含有机含氮化合物的含水二氧化硅基溶胶和（ii）至少一种带电的有机聚合物，在金属丝上形成并排出悬浮液。

3. 发明公开

EP1456469A1 AQUEOUS SILICA-CONTAINING COMPOSITION AND PROCESS FOR PRODUCTION OF PAPER 有权
标题翻译：水性含硅组合物和方法生产纸
公开(公告)号：EP1456469A1
公开(公告)日：2004-09-15
申请号：EP02793739.0
申请日：2002-12-20
申请人： Akzo Nobel N.V. , Eka Chemicals AB
发明人： NYANDER, Johan , JOHANSSON-VESTIN, Hans , NORDIN, Jan , PAL, Annika, Viola
IPC分类号： D21H17/71 , D21H17/68 , D21H21/10
CPC分类号： D21H17/74 , D21H17/29 , D21H17/375 , D21H17/455 , D21H17/48 , D21H17/68 , D21H21/10
摘要： The present invention refers to a process for the production of paper from a suspension containing cellulosic fibres, and optionally fillers, comprising adding to the suspension at least one cationic organic polymer and an aqueous silica-containing composition comprising an anionic naphthalene sulphonate formaldehyde condensate and anionic silica-based particles, the composition having a weight ratio of naphthalene sulphonate formaldehyde condensate to silica-based particles within the range of from 0.2:1 to 99:1, and containing naphthalene sulphonate formaldehyde condensate and silica-based particles in an amount of at least 0.01 % by weight, based on the total weight of the aqueous silica-containing composition, and with the proviso that the composition contains substantially no cellulose-reactive sizing agent. The invention also encompasses an aqueous silica-containing composition and a method for preparation of an aqueous silica-containing composition.

4. 发明公开

EP1456468A1 AQUEOUS SILICA-CONTAINING COMPOSITION AND PROCESS FOR PRODUCTION OF PAPER 有权
标题翻译：水性含硅ZUSAMMENSTZUNG和方法生产纸的
公开(公告)号：EP1456468A1
公开(公告)日：2004-09-15
申请号：EP02793740.8
申请日：2002-12-20
申请人： Akzo Nobel N.V. , Eka Chemicals AB
发明人： JOHANSSON-VESTIN, Hans , NYANDER, Johan , NORDIN, Jan
IPC分类号： D21H17/68 , D21H21/10
CPC分类号： D21H17/68 , D21H21/10
摘要： The present invention relates to an aqueous silica-containing composition comprising an anionic organic polymer having at least one aromatic group and anionic aggregated or microgel formed silica-based particles. The aqueous silica-containing composition contains the anionic organic polymer having at least one aromatic group and the anionic silica-based particles in an amount of at least 0.01 % by weight of the total weight of the aqueous silica-containing composition. The aqueous silica-containing composition contains substantially no cellulose-reactive sizing agent and the anionic organic polymer having at least one aromatic group is not an anionic naphthalene sulphonate formaldehyde condensate.The invention further relates to methods for the preparation of the aqueous silica-containing composition and the use of the aqueous silica-composition as a drainage and retention aid in a process for the production of paper. The invention also relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optionally filler, in which the aqueous silica-containing composition and at least one charged organic polymer are added to the cellulosic suspension.

5. 发明授权

EP1309758B1 A PROCESS FOR THE PRODUCTION OF PAPER 有权
公开(公告)号：EP1309758B1
公开(公告)日：2012-04-11
申请号：EP01958740.1
申请日：2001-08-02
申请人： Akzo Nobel N.V. , Eka Chemicals AB
发明人： FRÖLICH, Sten , SOLHAGE, Fredrik , LINDGREN, Erik , JOHANSSON-VESTIN, Hans
IPC分类号： D21H23/76
CPC分类号： D21H23/765 , D21H17/29 , D21H17/47 , D21H21/16
摘要： The invention relates to a process for the production of paper from an aqueous suspen-sion containing cellulosic fibres, and optional fillers, which comprises separately adding to the suspen-sion a cationic organic polymer having one or more aromatic groups and an anionic polymer having one or more aromatic groups, the anionic polymer being selected from step-growth polymers, polysaccharides and naturally occurring aromatic polymers and modifications thereof, forming and draining the suspension on a wire, with the proviso that if the anionic polymer is a step-growth polymer it is not an anionic melamine-sulphonic acid condensation polymer. The invention further relates to a process for the production of paper from an aqueous suspen-sion containing cellulosic fibres, and optional fillers, which comprises separately adding to the suspen-sion a cationic organic polymer having one or more aromatic groups and an anionic polymer having one or more aromatic groups, forming and draining the suspension on a wire, with the proviso that the anionic polymer is not an anionic polystyrene sulphonate or anionic melamine-sulphonic acid condensation polymer.

6. 发明授权

EP1242308B1 SILICA-BASED SOLS 有权
标题翻译： SOLE基于二氧化硅
公开(公告)号：EP1242308B1
公开(公告)日：2005-11-16
申请号：EP00986107.1
申请日：2000-11-29
申请人： Akzo Nobel N.V. , Eka Chemicals AB
发明人： GREENWOOD, Peter , LINSTEN, Magnus, Olof , JOHANSSON-VESTIN, Hans
IPC分类号： C01B33/149 , D21H21/10 , D21H17/68 , D21H23/14 , C02F1/52
CPC分类号： C02F1/56 , B01J13/0034 , B01J13/0039 , C01B33/149 , C02F1/545 , C02F2103/28 , D21H17/68 , D21H21/10
摘要： The invention relates to an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention further relates to a process for the production of an aqueous silica-based sol comprising a nitrogen-containing organic compound which comprises incorporating a nitrogen-containing organic compound into a silica-based sol containing silica-based particles with a specific surface area of at least 300 square meters per gram of silica. The invention also relates to the use of an aqueous silica-based sol comprising a nitrogen-containing organic compound and silica-based particles with a specific surface area of at least 300 square meters per gram of silica as a flocculating agent in the production of pulp and paper and in water purification. The invention further relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optional fillers, which comprises adding to the suspension (i) an aqueous silica-based sol comprising an organic nitrogen-containing compound and (ii) at least one charged organic polymer, forming and draining the suspension on a wire.

7. 发明授权

EP1456468B1 AQUEOUS SILICA-CONTAINING COMPOSITION AND PROCESS FOR PRODUCTION OF PAPER 有权
标题翻译：水性含硅ZUSAMMENSTZUNG和方法生产纸的
公开(公告)号：EP1456468B1
公开(公告)日：2012-02-08
申请号：EP02793740.8
申请日：2002-12-20
申请人： Akzo Nobel N.V. , Eka Chemicals AB
发明人： JOHANSSON-VESTIN, Hans , NYANDER, Johan , NORDIN, Jan , Fredrik Solhage
IPC分类号： D21H17/68 , D21H21/10
CPC分类号： D21H17/68 , D21H21/10
摘要： The present invention relates to an aqueous silica-containing composition comprising an anionic organic polymer having at least one aromatic group and anionic aggregated or microgel formed silica-based particles. The aqueous silica-containing composition contains the anionic organic polymer having at least one aromatic group and the anionic silica-based particles in an amount of at least 0.01 % by weight of the total weight of the aqueous silica-containing composition. The aqueous silica-containing composition contains substantially no cellulose-reactive sizing agent and the anionic organic polymer having at least one aromatic group is not an anionic naphthalene sulphonate formaldehyde condensate.The invention further relates to methods for the preparation of the aqueous silica-containing composition and the use of the aqueous silica-composition as a drainage and retention aid in a process for the production of paper. The invention also relates to a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optionally filler, in which the aqueous silica-containing composition and at least one charged organic polymer are added to the cellulosic suspension.

8. 发明公开

EP1963575A1 SIZING OF PAPER 有权转让
标题翻译：法上浆PAPER
公开(公告)号：EP1963575A1
公开(公告)日：2008-09-03
申请号：EP06824575.2
申请日：2006-11-24
申请人： Akzo Nobel N.V. , EKA Chemicals AB
发明人： JOHANSSON-VESTIN, Hans , LIESÉN, Jonas , TURUNEN, Marie , EMANUELSSON, Jan
IPC分类号： D21H21/16
CPC分类号： D21H21/16 , D21H17/07 , D21H17/45 , D21H17/56 , D21H17/68 , D21H23/04 , D21H23/22
摘要： The invention relates to an aqueous dispersion of cellulose-reactive sizing agent containing an acid anhydride, an anionic polyelectrolyte and a nitrogen-containing organic compound which is an amine or quaternary ammonium thereof having a molecular weight less than 180 and/or having one or more hydroxyl groups. The invention further relates to a method for the preparation of an aqueous dispersion of cellulose-reactive sizing agent which comprises dispersing an acid anhydride in an aqueous phase in the presence of an anionic polyelectrolyte and a nitrogen-containing organic compound which is an amine or quaternary ammonium thereof having a molecular weight less than 180 and/or having one or more hydroxyl groups. The invention also relates to the use of the aqueous dispersion of cellulose-reactive sizing agent as a stock sizing agent or surface sizing agent in the production of paper. The invention further relates to a process for the production of paper which comprises adding the aqueous dispersion of cellulose-reactive sizing agent to an aqueous cellulosic suspension.

9. 发明授权

EP1181245B1 SILICA-BASED SOLS 有权
标题翻译： SOLE基于二氧化硅
公开(公告)号：EP1181245B1
公开(公告)日：2006-08-02
申请号：EP00929996.7
申请日：2000-04-28
申请人： Akzo Nobel N.V. , Eka Chemicals AB
发明人： PERSSON, Michael , TOKARZ, Marek , DAHLGREN, Maj-Lis , JOHANSSON-VESTIN, Hans
IPC分类号： C01B33/143 , C01B33/146 , D21H17/68 , D21H21/10
CPC分类号： C01B33/146 , C01B33/141 , C01B33/143 , C01B33/1435 , D21H17/29 , D21H17/375 , D21H17/455 , D21H17/68 , D21H21/10
摘要： The invention relates to an aqueous sol containing silica-based particles which has an S-value within the range of from 10 to 45%, a viscosity within the range of from 5 to 40 cP and a silica content of at least 10% by weight. The invention further relates to use of the aqueous sol containing silica-based particles as a drainage and retention aid in the production of paper as well as a process for the production of paper from an aqueous suspension containing cellulosic fibres, and optional filler, in which an aqueous sol containing silica-based particles and at least one charged organic polymer are added to the cellulosic suspension.

10. 发明公开

EP1309758A1 A PROCESS FOR THE PRODUCTION OF PAPER 有权
标题翻译：一种生产纸张的方法
公开(公告)号：EP1309758A1
公开(公告)日：2003-05-14
申请号：EP01958740.1
申请日：2001-08-02
申请人： Akzo Nobel N.V. , Eka Chemicals AB
发明人： FRÖLICH, Sten , SOLHAGE, Fredrik , LINDGREN, Erik , JOHANSSON-VESTIN, Hans
IPC分类号： D21H23/76
CPC分类号： D21H23/765 , D21H17/29 , D21H17/47 , D21H21/16
摘要： The invention relates to a process for the production of paper from an aqueous suspen-sion containing cellulosic fibres, and optional fillers, which comprises separately adding to the suspen-sion a cationic organic polymer having one or more aromatic groups and an anionic polymer having one or more aromatic groups, the anionic polymer being selected from step-growth polymers, polysaccharides and naturally occurring aromatic polymers and modifications thereof, forming and draining the suspension on a wire, with the proviso that if the anionic polymer is a step-growth polymer it is not an anionic melamine-sulphonic acid condensation polymer. The invention further relates to a process for the production of paper from an aqueous suspen-sion containing cellulosic fibres, and optional fillers, which comprises separately adding to the suspen-sion a cationic organic polymer having one or more aromatic groups and an anionic polymer having one or more aromatic groups, forming and draining the suspension on a wire, with the proviso that the anionic polymer is not an anionic polystyrene sulphonate or anionic melamine-sulphonic acid condensation polymer.
摘要翻译：本发明涉及由含悬浮液的纤维素纤维和任选的填料生产纸的方法，其包括向悬浮液中分别加入具有一个或多个芳族基团的阳离子有机聚合物和具有一个或更多的芳族基团，所述阴离子聚合物选自逐步增长聚合物，多糖和天然存在的芳族聚合物及其改性物，在网上形成并排出悬浮液，条件是如果阴离子聚合物是逐步增长聚合物，不是阴离子三聚氰胺 - 磺酸缩合聚合物。本发明进一步涉及由含悬浮液的纤维素纤维和任选的填料生产纸张的方法，其包括向悬浮液中分别加入具有一个或多个芳族基团的阳离子有机聚合物和具有一个或多个芳族基团，在网上形成并排出悬浮液，条件是阴离子聚合物不是阴离子聚苯乙烯磺酸盐或阴离子三聚氰胺 - 磺酸缩合聚合物。

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