公开(公告)号：US10697121B2

公开(公告)日：2020-06-30

申请号：US15531211

申请日：2015-10-27

申请人： Ecolab USA Inc.

发明人： Qinglong Rao ,  Yulin Zhao ,  Weiguo Cheng ,  Stephen B. Ashton ,  Aleksandar Todorovic ,  Alan Smith

IPC分类号： D21H17/37 ,  D21H17/67 ,  D21H17/44 ,  D21H21/06 ,  D21H17/45 ,  D21H21/10

摘要： A process for flocculating filler particles in water is provided. The process comprises adding a flocculant to a mixture comprising filler particles and water, wherein the flocculant has a reduced specific viscosity (“RSV”) of from about 5 dL/g to about 16 dL/g, a viscosity average molecular weight of from about 1,200,000 to about 7,500,000, and a cationic charge of from about 5 mol % to about 50 mol %. Flocs formed by flocculation of the filler particles and the flocculant have a median particle size of from about 10 μm to about 150 μm. The filler is not precipitated calcium carbonate alone. The flocs provided by the process are useful in increasing ash content of a paper product.

公开(公告)号：US20190301101A1

公开(公告)日：2019-10-03

申请号：US16305967

申请日：2017-05-31

申请人： Ecolab USA Inc.

发明人： Meng Zhang ,  Yulin Zhao ,  Na Xu

IPC分类号： D21H21/18 ,  D21H17/37 ,  D21H17/45 ,  D21H17/66

摘要： A method of enhancing paper strength properties is provided. The method comprises treating a paper sheet precursor with a polyaluminum salt, and a strengthening agent, wherein the strengthening agent comprises a dialdehyde-modified polyacrylamide copolymer and a polyacrylamide copolymer. The polyaluminum salt may be polyaluminum chloride. The methods have been demonstrated to provide, among other things, improvements in retention, strength, and dewatering.

公开(公告)号：US20190055695A1

公开(公告)日：2019-02-21

申请号：US15779767

申请日：2016-11-29

申请人： Ecolab USA Inc.

发明人： Jia Wu ,  Yulin Zhao ,  Xiao Zhang

IPC分类号： D21H17/15 ,  D21H21/06 ,  B31F1/14

摘要： The present invention relates to a release aid that includes at least one succinic anhydride derivative for use in a papermaking process. For example, the release aid of the present invention is particularly useful for use in a paperweb creping process. The present invention also relates to a paperweb creping method that includes a release aid comprising at least one succinic anhydride.

公开(公告)号：US10005007B2

公开(公告)日：2018-06-26

申请号：US14786501

申请日：2014-04-23

申请人： ECOLAB USA INC.

发明人： Yanru Fan ,  Yulin Zhao

IPC分类号： B01D19/04 ,  D21H21/12 ,  D21H17/00

CPC分类号： B01D19/0404 ,  D21H17/74 ,  D21H21/12 ,  B01D19/0409

摘要： Disclosed are an oil-in-water emulsion defoamer and a method for preparing the defoamer. The defoamer may have a dispersed oil phase with a droplet size of 4 to 8 μm, and a viscosity of 100 to 1000 cP, and is widely used for defoaming in paper coating and wet-end in a paper mill. A method for preparing an oil-in-water emulsion defoamer is also provided. The method may include adding an emulsifying agent to biodiesel, and mixing, then gradually adding hydrophobic fumed silica to obtain a first mixture. The method may also include gradually adding water and a non-ionic surfactant, and stirring until uniform to obtain a second mixture. The method may also include gradually adding the first mixture to the second mixture, and stirring until uniform, to obtain an oil-in-water emulsion defoamer.

公开(公告)号：US20160273167A1

公开(公告)日：2016-09-22

申请号：US15033351

申请日：2014-10-13

申请人： ECOLAB USA INC.

发明人： Meng Zhang ,  Bo Zhu ,  Yulin Zhao ,  Jian Kun Shen ,  Na Xu

IPC分类号： D21H21/20 ,  D21H17/37 ,  C08F8/00

CPC分类号： D21H21/20 ,  C08F8/00 ,  C08G69/00 ,  D21H17/00 ,  D21H17/37 ,  D21H17/375 ,  D21H21/18

摘要： The invention provides a dialdehyde modified acrylamide type polymer for paper making, which is obtained by reacting a dialdehyde with an acrylamide type base polymer, wherein the acrylamide type base polymer is formed by copolymerization of an acrylamide type monomer, a cationic monomer and/or an anionic monomer and a cross linking agent. The invention further provides a method for preparing said dialdehyde modified acrylamide type polymer. The dialdehyde modified acrylamide type polymer according to the invention has improved stability while maintains excellent enhanced performance.

摘要翻译： 本发明提供二醛改性丙烯酰胺型聚合物，其通过使二醛与丙烯酰胺类基础聚合物反应获得，其中丙烯酰胺型基础聚合物通过丙烯酰胺型单体，阳离子单体和/或 阴离子单体和交联剂。 本发明还提供了制备所述二醛改性丙烯酰胺型聚合物的方法。 根据本发明的二醛改性丙烯酰胺型聚合物具有改进的稳定性，同时保持优异的增强性能。

公开(公告)号：US10704201B2

公开(公告)日：2020-07-07

申请号：US15773667

申请日：2016-12-30

申请人： ECOLAB USA INC.

发明人： Yulin Zhao ,  Chunhao Wang ,  Na Xu ,  Jun Li ,  Meng Zhang

IPC分类号： D21H17/26 ,  D21H21/18 ,  D21H17/45 ,  D21H17/42 ,  D21H27/10 ,  D21H17/44 ,  D21H17/47 ,  D21H17/56 ,  D21H17/37 ,  D21H17/36 ,  D21H17/43

摘要： The present disclosure relates to a dry strength agent composition, use of an amine-containing cationic polymer for enhancing the dry strength of paper, and a method for enhancing the dry strength of paper. The dry strength agent composition includes at least two components. The first component is an amine-containing cationic polymer and the second component may be one or more anionic or amphoteric polymers.

公开(公告)号：US20180298556A1

公开(公告)日：2018-10-18

申请号：US15531234

申请日：2015-11-23

申请人： Ecolab USA Inc.

发明人： Na Xu ,  Meng Zhang ,  Yulin Zhao

IPC分类号： D21H17/37 ,  D21H17/38 ,  D21H17/43 ,  D21H17/55 ,  D21H21/20 ,  D21H23/28

摘要： A paper-making aid composition, as well as processes for increasing tensile strength in paper and paper-making processes are provided. The paper-making composition comprises an anionic dialdehyde-modified polyacrylamide and a polyamide polyamine-epichlorohydrin (“PAE”) resin present in the paper-making aid composition at a weight ratio of PAE resin to anionic dialdehyde-modified polyacrylamide of from about 5:1 to about 1:1.6. The processes utilize an anionic dialdehyde-modified polyacrylamide and PAE resin at certain ratios. The anionic dialdehyde-modified polyacrylamide and PAE resin may be added to the pulp slurry as a composition or separately.

公开(公告)号：US09873986B2

公开(公告)日：2018-01-23

申请号：US15021490

申请日：2014-09-12

申请人： Ecolab USA Inc.

发明人： Bo Zhu ,  Na Xu ,  Meng Zhang ,  Yulin Zhao

IPC分类号： D21H17/37 ,  D21H21/18

CPC分类号： D21H21/18 ,  D21H17/375

摘要： A paper-making aid composition comprising dialdehyde-modified polyacrylamide-type strengthening agent, polyacrylamide-type strengthening agent and water and having a pH value of 6 or more is provided. A method of paper-making by using the paper-making aid composition is also provided.

公开(公告)号：US10982391B2

公开(公告)日：2021-04-20

申请号：US16305967

申请日：2017-05-31

申请人： Ecolab USA Inc.

发明人： Meng Zhang ,  Yulin Zhao ,  Na Xu

IPC分类号： D21H21/18 ,  D21H17/37 ,  D21H17/45 ,  D21H17/66 ,  D21H17/00

摘要： A method of enhancing paper strength properties is provided. The method comprises treating a paper sheet precursor with a polyaluminum salt, and a strengthening agent, wherein the strengthening agent comprises a dialdehyde-modified polyacrylamide copolymer and a polyacrylamide copolymer. The polyaluminum salt may be polyaluminum chloride. The methods have been demonstrated to provide, among other things, improvements in retention, strength, and dewatering.

公开(公告)号：US10316469B2

公开(公告)日：2019-06-11

申请号：US15537018

申请日：2015-12-09

申请人： Ecolab USA Inc.

发明人： Meng Zhang ,  Na Xu ,  Jun Li ,  Yulin Zhao

IPC分类号： D21H23/10 ,  G05B13/00 ,  C08J3/21 ,  D21H21/18 ,  D21H23/06 ,  G05D21/02 ,  D21H17/37 ,  C08J3/00 ,  D21H21/20 ,  D21H23/08 ,  B01F13/10

摘要： An on-line control and reaction process for pH adjustment and a control device for automatically adjusting pH value are provided. The process includes mixing a first enhancer and a second enhancer, optionally after diluting the first enhancer and/or the second enhancer with water, to form a mixture, setting a base pH value (δ1) and a target pH value (δ2), and adding pH adjuster into the mixture via a pH control unit and mixing to obtain a product with the target pH value. The pH control unit adjusts the adding of the pH adjuster by measuring or inputting certain parameters.