公开(公告)号：US20150027651A1

公开(公告)日：2015-01-29

申请号：US14453282

申请日：2014-08-06

Applicant: BASF SE

Inventor： Christian JEHN-RENDU ,  Joachim Hege ,  Detlef Kannengiesser

IPC: D21H21/10 ,  D21H17/56 ,  D21H17/45 ,  D21H17/37

CPC classification number: D21H21/10 ,  D21C9/002 ,  D21C9/18 ,  D21H17/37 ,  D21H17/375 ,  D21H17/45 ,  D21H17/56

Abstract: A pulp making process in which fibrous cellulosic material is pulped to form an aqueous suspension of cellulosic material, the suspension is drained through a screen to form a pulp sheet and that the pulp sheet is dried to form a dry market pulp, in which a water soluble cationic polymer is added to the suspension as the sole drainage aid wherein the water-soluble cationic polymer is either, i) a copolymer comprising (a) between 1 and 70 mole % (meth) acrylamide and (b) between 30 and 99 mole % (meth) acryloyloxyethyltrimethyl ammonium chloride with an intrinsic viscosity between 5 and 9 dl/g; or ii) a hydrolysed homopolymer of vinylformamide comprising between 1 and 100 mole % vinyl amine units and having a K value of between 45 and 240. The process of the invention provides improved drainage time and solids content of the dewatered pulp.

Abstract translation: 一种制浆工艺，其中将纤维状纤维素材料制浆以形成纤维素材料的水悬浮液，将悬浮液通过筛网排出以形成纸浆片，并将纸浆片干燥以形成干市场纸浆，其中水 将可溶性阳离子聚合物作为唯一的助溶剂加入到悬浮液中，其中水溶性阳离子聚合物为：i）包含（a）1-70摩尔％（甲基）丙烯酰胺和（b）30-99摩尔 ％（甲基）丙烯酰氧基乙基三甲基氯化铵，特性粘度在5至9dl / g之间; 或ii）乙烯基甲酰胺的水解均聚物，其包含1至100摩尔％的乙烯基胺单元并且具有45至240的K值。本发明的方法提供了脱水纸浆的改进的排水时间和固体含量。

公开(公告)号：US20170166741A1

公开(公告)日：2017-06-15

申请号：US15323637

申请日：2015-07-02

Applicant: BASF SE

Inventor： Titus David LEMAN ,  Christian JEHN-RENDU ,  Holger KERN ,  Syarief B CAHYANA

IPC: C08L33/20 ,  D21H17/37 ,  D21H17/29 ,  C09D133/20 ,  D21H21/16

CPC classification number: C08L33/20 ,  C08F2/26 ,  C08F2/44 ,  C08L2201/54 ,  C09D133/20 ,  D21H17/28 ,  D21H17/29 ,  D21H17/37 ,  D21H17/375 ,  D21H17/46 ,  D21H19/20 ,  D21H19/54 ,  D21H19/56 ,  D21H21/16

Abstract: The invention relates to a finely divided, starch-containing aqueous polymer dispersion which is obtainable by free radical emulsion polymerization of ethylenically unsaturated monomers in the presence of at least one redox initiator and starch, wherein the ethylenically unsaturated monomers comprise (a) from 30 to 65% by weight of acrylonitrile and/or methacrylonitrile, (b) from 35 to 60% by weight of at least one C1-C12-alkyl acrylate and/or at least one C1-C12-alkyl methacrylate, (c) from 0 to 35% by weight of at least one other ethylenically unsaturated copolymerisable monomer, in which the sum of (a), (b) and (c) totals 100%, and in which the aqueous polymer dispersion comprises, (d) from 10 to 55% by weight of an ionic tapioca starch, in which the weight of (d) is based on the total solids of components (a), (b), (c) and (d) of the aqueous polymer dispersion. The invention also relates to a process for the manufacture of the finely divided, starch containing aqueous polymer dispersions and also to the use of said finely divided starch containing aqueous polymer dispersions as a size for paper, board and cardboard.

公开(公告)号：US20150345081A1

公开(公告)日：2015-12-03

申请号：US14760381

申请日：2014-01-09

Applicant: BASF SE

Inventor： Christopher Alan GRAY ,  Antonius MOORMANN-SCHMITZ ,  Hubert MEIXNER ,  Luis Miguel SANCHEZ CERRO ,  Thomas MUEHLENBERND ,  Christian JEHN-RENDU

IPC: D21H17/00 ,  D21H17/45 ,  D21H17/68 ,  D21H11/20

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.

Abstract translation: 纸和纸板的制造方法技术领域本发明涉及一种制造纸或纸板的方法，其中提供纤维素薄料并经受一个或多个剪切阶段然后排干，并移动筛网以形成干燥的片材 其中所述方法采用应用于稀浆的保留系统，所述保留系统包含作为组分的i）不同阳离子聚合物的共混物和ii）微粒材料，其中阳离子聚合物的共混物包含：a）阳离子 电荷密度为0.5〜3mEq / g，摩尔质量大于700,000Da的聚合物，该阳离子聚合物选自含有乙烯基胺单元和聚乙烯亚胺的聚合物，b）电荷密度低于3的阳离子聚合物 mEq /克，特性粘度至少为3dl / g，其中保留体系的组分之一在最终剪切阶段之后投入稀浆中 另一个在最终剪切阶段之前投入稀薄的原料。

公开(公告)号：US20180355558A1

公开(公告)日：2018-12-13

申请号：US15780279

申请日：2016-12-01

Applicant: BASF SE

Inventor： Carmen-Elena CIMPEANU ,  Klaus MOELLER ,  Petra ARNOLD ,  Kristina GEORGIEVA ,  Reinhold DIEING ,  Christian JEHN-RENDU ,  Quan WEN

IPC: D21H21/16 ,  C08F212/08 ,  C08F212/10 ,  C08F220/14 ,  C08F220/44 ,  C08F220/46 ,  C09D5/02 ,  C09D125/08 ,  C09D125/12 ,  C09D125/14 ,  C09D133/10 ,  C09D133/20 ,  D21H19/22 ,  D21J1/08

CPC classification number: D21H21/16 ,  C08F2/28 ,  C08F2/30 ,  C08F26/06 ,  C08F212/08 ,  C08F212/10 ,  C08F220/14 ,  C08F220/34 ,  C08F220/44 ,  C08F220/46 ,  C08F226/06 ,  C08F2220/1825 ,  C08F2800/20 ,  C09D5/02 ,  C09D125/08 ,  C09D125/12 ,  C09D125/14 ,  C09D133/10 ,  C09D133/20 ,  D21H17/35 ,  D21H17/375 ,  D21H17/455 ,  D21H19/22 ,  D21J1/08 ,  C08F2220/286 ,  C08F220/06 ,  C08F236/20 ,  C08F226/04 ,  C08F2220/1858

Abstract: Finely divided, cationic, aqueous polymer dispersion which is obtainable by emulsion polymerisation of ethylenically unsaturated monomers in an aqueous liquid containing a cationic prepolymer as a dispersant, wherein the cationic prepolymer is prepared in the presence of at least one polymerisation initiator by polymerisation of (a) from 15 to 45% by weight of at least one ethylenically unsaturated monomer comprising at least one quaternary ammonium group; (b) from 5 to 80% by weight of at least one optionally substituted styrene; (c) from 0 to 50% by weight of at least one C 1-12 alkyl (meth) acrylate; (d) from 0 to 10% by weight of at least one ethylenically unsaturated monomer comprising an acid group; (e) from 0 to 10% by weight of at least one ethylenically unsaturated monomer comprising an amine group; and (f) from 0 to 20% by weight of at least one non-ionic ethylenically unsaturated monomer differing from (b), (c) and (e), the sum of (a)+(b)+(c)+(d)+(e)+(f) being 100% by weight, in a first emulsion polymerisation in the presence of at least one non-ionic emulsifier, and thereafter, in the aqueous liquid containing the cationic prepolymer a second emulsion polymerisation is carried out, in the presence of at least one polymerisation initiator, of a monomer mixture comprising (i) from 10 to 70% by weight of at least one of an optionally substituted styrene or (meth) acrylonitrile; (ii) from 30 to 90% by weight of at least one CMS alkyl (meth) acrylate; (iii) from 0 to 30% by weight of at least one vinyl ester of linear or branched C1-30 carboxylic acids; and (iv) from 0 to 30% by weight of at least one non-ionic ethylenically unsaturated monomer differing from (i), (ii) and (iii), the sum of (i)+(ii)+(iii)+(iv) being 100% by weight, and the first emulsion polymerisation and/or the second emulsion polymerisation is optionally carried out in the presence of from 0 to 10% by weight of at least one polymerisation regulator. The polymer dispersions according to the present invention are suitable for use as sizing agents for paper, board and card board.

公开(公告)号：US20230049303A1

公开(公告)日：2023-02-16

申请号：US17881652

申请日：2022-08-05

Applicant: BASF SE

Inventor： Christian JEHN-RENDU ,  Silke BOERNER ,  Steffen GEIGER

IPC: C09D5/02 ,  C09D125/14 ,  C09D7/61

Abstract: The invention relates to a coating slip comprising (i) an aqueous dispersion of one or more vinyl acetate polymers, obtainable by free-radically initiated emulsion polymerization of 77% to 99% by weight of vinyl acetate, 1% to 13% by weight of ethylene and 0% to 10% by weight of one or more monoethylenically unsaturated monomers that are neither vinyl acetate nor ethylene, where the amounts of the monomers add up to 100% by weight, (ii) an aqueous dispersion of one or more styrene copolymers, obtainable by free-radically initiated emulsion polymerization of a monomer composition comprising 35% to 70% by weight of styrene, 20% to 60% by weight of one or more esters of acrylic and/or methacrylic acid with alkanols having 1 to 12 carbon atoms, or of one or more conjugated aliphatic dienes, 1% to 10% by weight of one or more monomers comprising acid groups, where the amounts of the monomers add up to 100% by weight, (iii) inorganic pigments and (iv) optionally further auxiliaries, where the total amount of emulsion polymers (i) and (ii) is 10 to 30 parts by weight based on 100 parts by weight of inorganic pigment (iii) and where the weight ratio of the styrene copolymer to the vinyl acetate polymer is 77:23 to 93:7, and to a method of producing the coating slip, to the use thereof for coating board, to a method of coating board with the coating slip and to the board coated thereby.