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公开(公告)号：US09982394B2
公开(公告)日：2018-05-29
申请号：US15113115
申请日：2015-01-22
Applicant: Kemira Oyj
Inventor： Joonas Hokka , Matti Hietaniemi , Sacha Legrand , Marco Polverari
IPC: D21H17/36 , D21H21/18 , D21H17/37 , D21H17/45 , D21H17/55 , D21H17/56 , D21H21/10 , D21H21/20 , C09D139/02 , D21H17/34 , D21H23/04
CPC classification number: D21H21/18 , C08L2201/54 , C09D139/02 , D21H17/34 , D21H17/36 , D21H17/37 , D21H17/375 , D21H17/45 , D21H17/55 , D21H17/56 , D21H21/10 , D21H21/20 , D21H23/04
Abstract: The invention relates to a papermaking agent composition, preferably in powder form, which comprises a water-soluble polymer, which comprises 21-30 mol-% of vinylamine units and has an average molecular weight of at least 1 000 000 Da. The invention relates also to a method for treating of fiber stock in manufacture of paper, board or the like, where a thick fiber stock is obtained, it is diluted to a thin fiber stock having a consistency
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公开(公告)号：US10189935B2
公开(公告)日：2019-01-29
申请号：US15300076
申请日：2015-04-10
Applicant: KEMIRA OYJ
Inventor： Asko Karppi , Matti Hietaniemi , Sacha Legrand
IPC: B01J41/14 , C02F11/14 , C08F293/00 , D21H17/37 , D21H21/10 , D21H21/18 , C02F1/56 , C08F4/04 , C08F4/36
Abstract: The invention provides new water soluble polymers for the use in industrial processes, where large quantities of water is handled, such as sludge dewatering and papermaking. These new polymers are water soluble cross-linked block copolymers, wherein the block copolymers are cross-linked together using a cross-linking agent. Each of the block copolymers contain two different blocks, and these blocks are formed from different monomers. The blocks are linked together with a molecular spacer derived from a bifunctional initiator used during the polymerization of the blocks. The monomers used in polymerizing the blocks are different with each other and they are selected from a group consisting of N-vinylformamide, acrylic acid, acrylamide and water-soluble derivatives thereof.
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Patent Agency Ranking
公开(公告)号：US10174134B2
公开(公告)日：2019-01-08
申请号：US15517960
申请日：2015-09-24
Applicant: Kemira Oyj
Inventor： Sacha Legrand
IPC: C08F226/02 , C08F8/12 , C08K5/20 , D21H17/38 , D21H17/45 , D21H21/10 , D21H21/20 , C08F271/00 , D21H17/34
Abstract: The present invention relates to a method for producing a cationic polyvinyl amine based copolymer. The present invention further relates to a cationic polyvinyl amine based copolymer and use of the copolymer in paper industry as a strength agent, a retention agent and a drainage agent.
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公开(公告)号：US20170240661A1
公开(公告)日：2017-08-24
申请号：US15517960
申请日：2015-09-24
Applicant: Kemira Oyj
Inventor： Sacha Legrand
CPC classification number: C08F8/12 , C08F226/02 , C08F271/00 , C08K5/20 , D21H17/34 , D21H17/38 , D21H17/45 , D21H21/10 , D21H21/20
Abstract: The present invention relates to a method for producing a cationic polyvinyl amine based copolymer. The present invention further relates to a cationic polyvinyl amine based copolymer and use of the copolymer in paper industry as a strength agent, a retention agent and a drainage agent.
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公开(公告)号：US10584217B2
公开(公告)日：2020-03-10
申请号：US15739751
申请日：2016-05-11
Applicant: Kemira Oyj
Inventor： Rosa Carceller , Matti Hietaniemi , Sacha Legrand , Mari Zabihian
IPC: D21H21/18 , C08J3/24 , C08F271/00 , D21H21/10 , D21H17/54 , C08L39/02 , C08L33/26 , C08L33/02 , D21H17/33 , D21H17/37 , C08F20/56 , C08F26/02 , D21H17/45
Abstract: The present invention relates to an interpenetrating polymer network (IPN) material comprising a copolymer of vinylamine-vinylformamide, and a homo-polymer or a copolymer of at least one monomer selected from acrylamide or derivatives thereof, acrylic acid or derivatives thereof, or a mixture thereof forming the IPN material together with the copolymer of vinylamine-vinyl-formamide. The present invention further relates to a process for producing the IPN material, and to use of the IPN material in paper industry.
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公开(公告)号：US10005873B2
公开(公告)日：2018-06-26
申请号：US15121558
申请日：2015-02-27
Applicant: KEMIRA OYJ
Inventor： Sacha Legrand , Marco Polverari , Rosa Carceller
IPC: D21H17/34 , C08F293/00 , C02F1/56 , C02F11/14 , C08F295/00 , D21H17/37 , D21H21/06 , D21H21/10 , C08F8/12 , C02F1/52 , C08F226/02
CPC classification number: C08F293/00 , C02F1/5272 , C02F1/56 , C02F11/14 , C08F8/12 , C08F226/02 , C08F295/00 , D21H17/34 , D21H17/37 , D21H17/375 , D21H21/06 , D21H21/10
Abstract: New polyvinylamide and/or acryl acid-based copolymers. The new structured block copolymers are based on the block copolymerization of N-vinyl formamide (NVF) with other monomers by using a bifunctional initiator. Further, a method of preparing the structured block copolymer is provided, and especially a method wherein the NVF-based block is at least partially hydrolyzed to obtain PVAm. Also the use of the new structured block copolymers in sludge dewatering and in papermaking processes is disclosed.
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公开(公告)号：US20170002518A1
公开(公告)日：2017-01-05
申请号：US15113115
申请日：2015-01-22
Applicant: KEMIRA OYJ
Inventor： Joonas Hokka , Matti Hietaniemi , Sacha Legrand , Marco Polverari
CPC classification number: D21H21/18 , C08L2201/54 , C09D139/02 , D21H17/34 , D21H17/36 , D21H17/37 , D21H17/375 , D21H17/45 , D21H17/55 , D21H17/56 , D21H21/10 , D21H21/20 , D21H23/04
Abstract: The invention relates to a papermaking agent composition, preferably in powder form, which comprises a water-soluble polymer, which comprises 21-30 mol-% of vinylamine units and has an average molecular weight of at least 1 000 000 Da. The invention relates also to a method for treating of fibre stock in manufacture of paper, board or the like, where a thick fibre stock is obtained, it is diluted to a thin fibre stock having a consistency
Abstract translation: 本发明涉及一种造纸剂组合物，优选粉末形式，其包含水溶性聚合物，其包含21-30摩尔％的乙烯胺单元并且具有至少1 000 000Da的平均分子量。 本发明还涉及在纸，纸板等的制造中处理纤维原料的方法，其中获得厚纤维原料，通过加入水稀释成稠度<3％的薄纤维原料，以及 将纤维原料排出并形成连续的纤维网。 将造纸剂组合物加入粗纤维原料或稀纤维中。
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