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1.发明授权公开(公告)号：US07972478B2
公开(公告)日：2011-07-05
申请号：US11813955
申请日：2006-01-11
IPC分类号： D21H15/00
CPC分类号： C08F220/56 , C08F8/00 , C08F226/02 , D21H17/42 , D21H17/45 , D21H21/18 , C08F20/00
摘要： In a method of producing a sheet of paper and/or cardboard and similar products, prior to the formation of the sheet from a fibrous suspension, at least two dry strength agents are added to the suspension either separately in any order or mixed together and at one or more injection points, namely: a first agent corresponding to a product for Hofmann degradation in solution on a base (co)polymer comprising at least one non-ionic monomer which is selected from the group containing acrylamide and/or methacrylamide, N,N dimethylacrlamide and/or acrylonitrile; and a second agent corresponding to a (co)polymer having an anionic charge density greater than 0.1 meq/g. The Hofmann degradation product comprises an organic polymer produced at a concentration greater than 3.5% by weight, and preferably greater than 4.5% and the first and second agents are each introduced into the pulp suspension at a concentration of between 0.01 and 2% by weight of active polymer material in relation to the dry weight of the pulp suspension.
摘要翻译： 在制造纸张和/或纸板和类似产品的方法中，在从纤维悬浮液形成片材之前，将至少两种干强度剂以任何顺序分开加入悬浮液中或混合在一起并在 一个或多个注射点，即：对应于在包含至少一种非离子单体的基础（共）聚合物上的溶液中的霍夫曼降解的产物的第一试剂，其选自含有丙烯酰胺和/或甲基丙烯酰胺的N， N二甲基丙烯酰胺和/或丙烯腈; 和对应于阴离子电荷密度大于0.1meq / g的（共）聚合物的第二试剂。 霍夫曼降解产物包含以大于3.5重量％，优选大于4.5重量％的浓度制备的有机聚合物，并且将第一和第二试剂以0.01至2重量％的浓度引入纸浆悬浮液中 活性聚合物材料相对于纸浆悬浮液的干重。
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2.发明授权Process for preparing acrylamide copolymers by Hofmann degradation reaction 有权通过霍夫曼降解反应制备丙烯酰胺共聚物的方法公开(公告)号：US08623966B2
公开(公告)日：2014-01-07
申请号：US13124672
申请日：2009-03-18
申请人： René Hund , Christophe Auriant
发明人： René Hund , Christophe Auriant
摘要： In a process for preparing cationic or amphoteric (co)polymers derived from acrylamide by a Hofmann degradation reaction in aqueous solution in the presence of an alkali and/or alkaline-earth metal hydroxide and an alkali metal hypohalide on a base copolymer, a solution of base copolymer on which the reaction is performed contains a polyvalent cationic salt representing at least 0.5% by weight, preferably from 2 to 10% by weight of the base copolymer.
摘要翻译： 在碱性共聚物的碱金属和/或碱土金属氢氧化物和碱金属的次卤酸存在下，通过在水溶液中的霍夫曼降解反应制备由丙烯酰胺衍生的阳离子或两性（共）聚合物的方法， 其上进行反应的基础共聚物包含多价阳离子盐，其占基础共聚物的至少0.5重量％，优选2至10重量％。
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公开(公告)号：US08734616B2
公开(公告)日：2014-05-27
申请号：US13388514
申请日：2010-08-03
申请人： René Hund , Christophe Auriant
发明人： René Hund , Christophe Auriant
IPC分类号： D21H11/00
CPC分类号： D21H17/33 , C08F8/00 , C08F8/44 , C08F2800/10 , D21H17/41 , D21H17/44 , D21H21/10 , D21H21/18 , C08F220/56 , C08F226/02 , C08F222/385
摘要： Cationic or amphoteric (co)polymer obtained by Hofmann degradation reaction, in aqueous solution, in the presence of an alkaline-earth and/or alkali metal hydroxide and of an alkaline-earth and/or alkali metal hypohalide, on a base (co)polymer comprising at least one nonionic monomer chosen from the group comprising acrylamide (and/or methacrylamide) and N,N-dimethylacrylamide, is characterized in that the base (co)polymer is modified beforehand with at least one polyfunctional compound containing at least 3 heteroatoms chosen from N, S, O and P and each having at least one mobile hydrogen. Use as a flocculation, retention and/or drainage aid, and dry strength aid is contemplated.
摘要翻译： 在水溶液中，在碱土金属和/或碱金属氢氧化物和碱土金属和/或碱金属次卤酸盐存在下，在碱（co）上获得的阳离子或两性（共）聚合物， 包含至少一种选自丙烯酰胺（和/或甲基丙烯酰胺）和N，N-二甲基丙烯酰胺的非离子单体的聚合物的特征在于，预先用至少一种含至少3个杂原子的多官能化合物修饰碱（共）聚合物 选自N，S，O和P，并且各自具有至少一个可移动氢。 用作絮凝，保留和/或排水辅助剂以及干强度助剂。
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公开(公告)号：US20120132382A1
公开(公告)日：2012-05-31
申请号：US13388514
申请日：2010-08-03
申请人： René Hund , Christophe Auriant
发明人： René Hund , Christophe Auriant
CPC分类号： D21H17/33 , C08F8/00 , C08F8/44 , C08F2800/10 , D21H17/41 , D21H17/44 , D21H21/10 , D21H21/18 , C08F220/56 , C08F226/02 , C08F222/385
摘要： Cationic or amphoteric (co)polymer obtained by Hofmann degradation reaction, in aqueous solution, in the presence of an alkaline-earth and/or alkali metal hydroxide and of an alkaline-earth and/or alkali metal hypohalide, on a base (co)polymer comprising at least one nonionic monomer chosen from the group comprising acrylamide (and/or methacrylamide) and N,N-dimethylacrylamide, is characterized in that the base (co)polymer is modified beforehand with at least one polyfunctional compound containing at least 3 heteroatoms chosen from N, S, O and P and each having at least one mobile hydrogen. Use as a flocculation, retention and/or drainage aid, and dry strength aid is contemplated.
摘要翻译： 在水溶液中，在碱土金属和/或碱金属氢氧化物和碱土金属和/或碱金属次卤酸盐存在下，在碱（co）上获得的阳离子或两性（共）聚合物， 包含至少一种选自丙烯酰胺（和/或甲基丙烯酰胺）和N，N-二甲基丙烯酰胺的非离子单体的聚合物的特征在于，预先用至少一种含至少3个杂原子的多官能化合物修饰碱（共）聚合物 选自N，S，O和P，并且各自具有至少一个可移动氢。 用作絮凝，保留和/或排水辅助剂以及干强度助剂。
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公开(公告)号：US20100326614A1
公开(公告)日：2010-12-30
申请号：US12449626
申请日：2008-02-19
申请人： René Hund , Christian Jehn-Rendu
发明人： René Hund , Christian Jehn-Rendu
CPC分类号： C08F220/60 , D21H17/375 , D21H17/45 , D21H21/18
摘要： A cationic copolymers of acrylamide obtained by the Hofmann rearrangement, using an alkali and/or alkaline earth hydroxide and an alkali and/or alkaline earth hypohalide, are provided. The copolymers can be used as strengthening agents for paper and/or coagulants. The copolymers have a desalination coefficient (Cd) higher than 0.6, higher than 0.65, or higher than 0.7.
摘要翻译： 提供通过霍夫曼重排获得的丙烯酰胺的阳离子共聚物，其使用碱金属和/或碱土金属氢氧化物和碱金属和/或碱土金属氧化物。 共聚物可用作纸和/或絮凝剂的增强剂。 共聚物的脱盐系数（Cd）高于0.6，高于0.65，或高于0.7。
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6.发明授权Methods for synthesizing polyvinyl amine (PVA) type flocculating and coagulating agents, novel agents thus obtained, uses thereof and improved paper types thus obtained 有权聚乙烯胺（PVA）型絮凝和凝结剂的合成方法，如此获得的新型试剂，其用途和改进的纸类型公开(公告)号：US06797785B1
公开(公告)日：2004-09-28
申请号：US09926245
申请日：2001-12-31
申请人： René Hund , Christian Jehn-Rendu
发明人： René Hund , Christian Jehn-Rendu
IPC分类号： C08F812
摘要： The invention relates to a process of synthesis at low temperature of polymers of the PVA (polyvinylamine) type on the basis the monomer vinylformamide. The polymerization claimed for the invention begins at around 0° C., is initiated by an original combination of redox and azoic catalysts, and is conducted under more or less normal pressure. The polymerization is conducted in water and is followed by direct hydrolysis. A powdered cationic PVA of high molecular weight is thereby obtained. The process may also be conducted in an emulsion at an initiation temperature of around 15° C. Application of PVAs as flocculants and coagulants in the paper, water treatment, petroleum and parapetroleum, and, similar industries.
摘要翻译： 本发明涉及一种基于单体乙烯基甲酰胺在PVA（聚乙烯胺）型聚合物的低温下合成的方法。 本发明要求保护的聚合物在约0℃开始，由氧化还原和偶氮催化剂的原始组合引发，并且在或多或少的常压下进行。 聚合在水中进行，然后直接水解。 得到高分子量的粉末状阳离子PVA。 该方法也可以在约15℃的起始温度下在乳液中进行。在纸，水处理，石油和parapetroleum以及类似工业中使用PVAs作为絮凝剂和凝结剂。
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7.发明申请PROCESS FOR PREPARING ACRYLAMIDE COPOLYMERS BY HOFMANN DEGRADATION REACTION 有权通过HOFMANN降解反应制备丙烯酰胺共聚物的方法公开(公告)号：US20110263796A1
公开(公告)日：2011-10-27
申请号：US13124672
申请日：2009-03-18
申请人： René Hund , Christophe Auriant
发明人： René Hund , Christophe Auriant
IPC分类号： C08F8/00
摘要： In a process for preparing cationic or amphoteric (co)polymers derived from acrylamide by a Hofmann degradation reaction in aqueous solution in the presence of an alkali and/or alkaline-earth metal hydroxide and an alkali metal hypohalide on a base copolymer, a solution of base copolymer on which the reaction is performed contains a polyvalent cationic salt representing at least 0.5% by weight, preferably from 2 to 10% by weight of the base copolymer.
摘要翻译： 在碱性共聚物的碱金属和/或碱土金属氢氧化物和碱金属的次卤酸存在下，通过在水溶液中的霍夫曼降解反应制备由丙烯酰胺衍生的阳离子或两性（共）聚合物的方法， 其上进行反应的基础共聚物包含多价阳离子盐，其占基础共聚物的至少0.5重量％，优选2至10重量％。
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公开(公告)号：US08242215B2
公开(公告)日：2012-08-14
申请号：US12449626
申请日：2008-02-19
申请人： René Hund , Christian Jehn-Rendu
发明人： René Hund , Christian Jehn-Rendu
IPC分类号： C08F16/00
CPC分类号： C08F220/60 , D21H17/375 , D21H17/45 , D21H21/18
摘要： A cationic copolymers of acrylamide obtained by the Hofmann rearrangement, using an alkali and/or alkaline earth hydroxide and an alkali and/or alkaline earth hypohalide, are provided. The copolymers can be used as strengthening agents for paper and/or coagulants. The copolymers have a desalination coefficient (Cd) higher than 0.6, higher than 0.65, or higher than 0.7.
摘要翻译： 提供通过霍夫曼重排获得的丙烯酰胺的阳离子共聚物，其使用碱金属和/或碱土金属氢氧化物和碱金属和/或碱土金属氧化物。 共聚物可用作纸和/或絮凝剂的增强剂。 共聚物的脱盐系数（Cd）高于0.6，高于0.65，或高于0.7。
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