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    METHOD FOR ON-SITE GLYOXYLATION OF POLYACRYLAMIDE
    1.
    发明申请
    METHOD FOR ON-SITE GLYOXYLATION OF POLYACRYLAMIDE 审中-公开

    公开(公告)号：WO2023047020A1

    公开(公告)日：2023-03-30

    申请号：PCT/FI2022/050632

    申请日：2022-09-21

    Applicant: KEMIRA OYJ

    Inventor： KARPPI, Asko ,  HIETANIEMI, Matti ,  VANZETTI, Giorgio ,  KONN, Jonas ,  KEMPAS, Tomi

    IPC: D21H17/06 ,  C08F8/28 ,  C08F220/56 ,  D21H17/37 ,  D21H17/38 ,  D21H21/18 ,  D21H21/20

    Abstract: The present invention relates to a method for on-site glyoxylation of polyacrylamide in a paper mill, board mill or the like, where a discontinuous batch glyoxylation reaction of an aqueous reaction mixture is performed in a reactor vessel provided with a driven agitator to form an aqueous polymer composition comprising glyoxylated polyacrylamide. The method comprises forming or obtaining the aqueous reaction mixture having a start viscosity and comprising polyacrylamide base polymer having a weight average molecular weight of 30 000 – 300 000 g/mol and glyoxal. The concentration of the polyacrylamide base polymer in the reaction mixture is 1.5 – 8% above a Critical Concentration of the polyacrylamide base polymer. A feed of an alkali is added to the reaction mixture while measuring viscosity of the reaction mixture and/or a process variable that is related to the viscosity of the reaction mixture and the on-site glyoxylation reaction of polyacrylamide base polymer in the reaction mixture is allowed to proceed. When a predetermined end viscosity value is attained the feed of alkali is ended and acid is added to the reaction mixture. The aqueous polymer composition comprising glyoxylated polyacrylamide is removed from the reaction vessel.

    EMULSIFICATION OF ALKENYL SUCCINIC ANHYDRIDE SIZE
    2.
    发明申请
    EMULSIFICATION OF ALKENYL SUCCINIC ANHYDRIDE SIZE 审中-公开
    烷基磺酸酐的大小的模拟

    公开(公告)号：WO02035003A1

    公开(公告)日：2002-05-02

    申请号：PCT/US2000/029271

    申请日：2000-10-24

    IPC: C08F251/00 ,  D21H17/16 ,  D21H17/28 ,  D21H17/37 ,  D21H17/38 ,  D21H21/16 ,  D21H17/72

    CPC classification number: D21H17/72 ,  C08F251/00 ,  D21H17/16 ,  D21H17/28 ,  D21H17/37 ,  D21H17/38 ,  D21H21/16 ,  C08F220/56

    Abstract: Alkenyl succinic anhydride (ASA) size emulsions are prepared using a grafted cationic acrylamide starch co-polymer as an emulsification agent. The ASA size emulsions of the present invention exhibit significantly greater stability compared to presently available ASA size emulsions. The grafted starch co-polymer also is a more efficient emulsification agent for ASA size, permitting the use of less emulsification agent, thereby saving cost.

    Abstract translation: 使用接枝阳离子丙烯酰胺淀粉共聚物作为乳化剂制备烯基琥珀酸酐（ASA）尺寸的乳液。 与目前可获得的ASA尺寸乳液相比，本发明的ASA胶乳显示出显着更大的稳定性。 接枝淀粉共聚物也是用于ASA尺寸的更有效的乳化剂，允许使用较少的乳化剂，从而节省成本。

    VERFAHREN ZUR HERSTELLUNG EINES TROCKENVERFESTIGERS AUS GLYOXYLIERTEM POLYACRYLAMID
    3.
    发明申请
    VERFAHREN ZUR HERSTELLUNG EINES TROCKENVERFESTIGERS AUS GLYOXYLIERTEM POLYACRYLAMID 审中-公开
    生产干燥聚丙烯酰胺干燥机的方法

    公开(公告)号：WO2017185110A1

    公开(公告)日：2017-11-02

    申请号：PCT/AT2017/000016

    申请日：2017-03-22

    Applicant: APPLIED CHEMICALS HANDELS-GMBH

    Inventor： KERMAN, Nuri

    IPC: C08F8/28 ,  C08F120/56 ,  D21H17/37 ,  D21H17/38 ,  D21H21/18

    Abstract: Bei einem Verfahren zur Herstellung eines Trockenverfestigers, insbesondere von giyoxiliertem Polyacrylamid, bei welchem eine wässerige Lösung von Polyacrylamid unter Rühren mittels einer Zirkulationspumpe mit Ethandial (Glyoxal) versetzt wird, wird die Reaktion durch Zugabe einer Base, insbesondere einer starken Base bei einem basischem pH-Wert, insbesondere einem pH-Wert größer 8 gestartet und wird unter Rühren und/oder Zirkulieren reagieren gelassen, worauf nach Ablauf einer vorgegebenen Reaktionszeit, die Reaktion durch Zugabe einer Säure unter Rühren und/oder Zirkulieren gestoppt wird, wobei das Verfahren als diskontinuierliches Verfahren geführt wird, bei weichem eine quantitative Umsetzung des Ethandials mit einer Überschussmenge von Polyacrylamid in einem wässerigen, basischen Milieu durch wenigstens einen, vorzugsweise wenigstens zwei der Faktoren gewählt aus: a) Trübungsmessung, b) pH-Wert-Anpassung in Abhängigkeit von der Temperatur, c) pH-Wert-Anpassung in Abhängigkeit von der Reaktionszeit, d) Abfall des pH-Wertes oder e) Stromaufnahme der Zirkulationspumpe gesteuert und/oder geregelt wird.

    Abstract translation:

    一种生产Trockenverfestigers的方法，特别是giyoxiliertem聚丙烯酰胺，其中用于含水L＆ouml一个瓦特BEAR;下ř导航用途的聚丙烯酰胺的溶液通过用乙二醛（乙二醛）的循环泵来添加的铅，反应是 通过在碱性pH下加入碱，特别是强碱，特别是pH值GR＆ouml;道路它开始8和R导航使用铅和/或循环允许在预定的反应时间后进行反应，随后，将反应 铅及/或循环被停止时，所述方法作为间歇过程实测值导航用途，通过添加S＆AUML的;下ř导航用途URE是HRT，对于Ethandials与在一个瓦特BEAR自由基路线，碱性介质中的聚丙烯酰胺的导航用途berschussmenge软定量转化 通过选自以下的至少一个，优选至少两个因子：a）监测，b）pH调节 纳克依赖BEAR对温度的依赖性，c）以依赖BEAR pH值调节依赖性通过在pH值的反应时间，d）减少或e）的循环泵和/或调节的电流消耗来控制。

    BINDER COMPOSITIONS FOR MAKING CROSSLINKED CELLULOSE FIBER
    4.
    发明申请
    BINDER COMPOSITIONS FOR MAKING CROSSLINKED CELLULOSE FIBER 审中-公开
    用于制造交联纤维素纤维的粘合剂组合物

    公开(公告)号：WO2016081819A1

    公开(公告)日：2016-05-26

    申请号：PCT/US2015/061807

    申请日：2015-11-20

    Applicant: ROHM AND HAAS COMPANY

    Inventor： RAND, Charles J. ,  FINCH, William C. ,  RODOWSKI, C. Damien ,  WILLIAMS, Drew E.

    IPC: D21C9/00 ,  D21H15/00 ,  D21H17/37 ,  D21H17/38 ,  D21H17/53

    CPC classification number: D21C9/005 ,  D21C9/002 ,  D21C9/007 ,  D21H15/00 ,  D21H17/10 ,  D21H17/37 ,  D21H17/38 ,  D21H17/53

    Abstract: The present invention provides aqueous compositions for treating fluff pulp comprising (i) one or more acrylic acid polymers containing phosphinate groups and having a weight average molecular weight of from 1,000 to 6,000 and (ii) from 5 to 50 wt.%, based on the total solids weight of the aqueous compositions, of one or more polyethylene glycols, having a formula weight of from 150 to 7,000, or, preferably, from 200 to 600. The present invention also provides individualized, intrafiber crosslinked cellulosic fibers comprising the cellulosic fiber and, in cured form, the aqueous compositions, as well as methods of making the individualized, intrafiber crosslinked cellulosic fibers.

    Abstract translation: 本发明提供了用于处理绒毛浆的水性组合物，其包含（i）一种或多种含有次膦酸基的丙烯酸聚合物，其重均分子量为1,000至6,000，和（ii）5至50重量％，基于 水性组合物的总固体重量，一种或多种聚乙二醇，其配方重量为150至7000，或优选为200-600。本发明还提供了包含纤维素纤维和纤维素纤维的单独的纤维内纤维素纤维， 固化形式的含水组合物，以及制备个体化的纤维内纤维素纤维的方法。

    GLYOXALATED POLYACRYLAMIDES AS PAPER STRENGTHENING AGENTS
    8.
    发明申请
    GLYOXALATED POLYACRYLAMIDES AS PAPER STRENGTHENING AGENTS 审中-公开
    作为增强剂的GLYOXALATED聚丙烯酰胺

    公开(公告)号：WO00034584A1

    公开(公告)日：2000-06-15

    申请号：PCT/US1999/026028

    申请日：1999-11-30

    IPC: D21H11/08 ,  D21H17/37 ,  D21H17/38 ,  D21H17/67 ,  D21H21/18 ,  D21H21/28 ,  D21H23/04

    CPC classification number: D21H17/38 ,  D21H11/08 ,  D21H17/375 ,  D21H17/67 ,  D21H21/18 ,  D21H21/285

    Abstract: Method of making paper product, including adding glyoxalated polyacrylamide and opacifier to wet pulp to form wet pulp mix, and forming paper product from the wet pulp mix. A method of making newsprint, includes adding glyoxalated polyacrylamide to wet pulp to form wet pulp mix; and forming newsprint from the wet pulp mix. A method of making wood containing paper, includes adding glyoxalated polyacrylamide and opacifier to wet pulp comprising mechanical pulp; and forming wood containing paper from the wet pulp, wherein the wood containing paper has a dry, machine direction tensile strength of at least about 6 lb/in width and an opacity of at least about 85 %. A paper product, newsprint, or wood containing paper may be made.

    Abstract translation: 制造纸制品的方法，包括将乙醛酸聚丙烯酰胺和遮光剂加入到湿纸浆中以形成湿纸浆混合物，以及从湿纸浆混合物形成纸制品。 制备新闻纸的方法包括将乙醛酸聚丙烯酰胺加入到湿纸浆中以形成湿纸浆混合物; 并从湿纸浆混合物形成新闻纸。 包含纸的木材的方法包括将乙醛酸化的聚丙烯酰胺和遮光剂加入含有机械纸浆的湿纸浆中; 以及从湿纸浆中形成含木纸，其中所述含木材的纸具有至少约6lb /英寸宽的干燥的机器方向拉伸强度和至少约85％的不透明度。 可以制造纸制品，新闻纸或含木纸。

    CREPING PROCESS UTILIZING LOW TEMPERATURE-CURING ADHESIVE
    9.
    发明申请
    CREPING PROCESS UTILIZING LOW TEMPERATURE-CURING ADHESIVE 审中-公开
    使用低温固化粘合剂的加工工艺

    公开(公告)号：WO99034060A1

    公开(公告)日：1999-07-08

    申请号：PCT/US1998/027738

    申请日：1998-12-28

    IPC: B31F1/12 ,  D21H17/38 ,  D21H21/20 ,  D21H25/06

    CPC classification number: D21H25/06 ,  B31F1/12 ,  D21H17/38 ,  D21H21/20

    Abstract: A method of increasing the wet strength of a creped sheet, which method involves providing a sheet (36) which includes cellulosic fibers, which sheet has a first side and a second side; applying (50) a low temperature-curing latex adhesive binder composition (58) to the first side of the sheet (36) in a fine, spaced-apart pattern occupying from about 20 to about 50 percent of the surface area of the sheet; adhering the first side of the sheet (36) to a creping surface; and creping the sheet from the creping surface. The binder composition (58) is adapted to adhere the sheet to the creping surface (60) and includes a functional group-containing latex, a functional group-reactive crosslinking agent, and a volatile base. In addition, the creping surface (60) is heated at a temperature no greater than about 100 DEG C. The low temperature-curing latex adhesive binder composition (58) is adapted to have cured to a level, by the time the sheet is removed from the creping surface, which imparts to the creped sheet a cross-direction wet tensile strength which is at least about 50 percent that of an identical creped sheet which has been heated at about 150 DEG C for three minutes, in which the cross-direction wet tensile is tested in accordance with TAPPI Test Methods T494om-88 and T456om-87. In addition, the cross-direction wet tensile strength of the creped sheet is at least about 40 grams per centimeter.

    Abstract translation: 提高绉纹片的湿强度的方法，该方法包括提供包括纤维素纤维的片材（36），该片材具有第一面和第二面; 将低温固化的胶乳粘合剂组合物（50）（50）以细的间隔图案施加（50）到所述片材（36）的第一侧，占据所述片材表面积的约20至约50％ 将片材（36）的第一侧粘附到起皱表面; 并从起皱表面起皱片材。 粘合剂组合物（58）适于将片材粘附到起皱表面（60），并且包括含官能团的胶乳，官能团反应性交联剂和挥发性碱。 此外，起皱表面（60）在不高于约100℃的温度下加热。低温固化胶乳粘合剂粘合剂组合物（58）适于在片材被去除时固化至一定水平 从起皱表面向起皱片施加交叉方向的湿拉伸强度，该拉伸强度与已经在约150℃加热3分钟的相同的起皱片的至少约50％的横向湿拉伸强度，其中横向 根据TAPPI测试方法T494om-88和T456M-87测试湿拉伸。 此外，绉纹片的横向湿拉伸强度为至少约40克/厘米。

    POLYACRYLAMIDE COMPOSITION AND ITS USE
    10.
    发明申请
    POLYACRYLAMIDE COMPOSITION AND ITS USE 审中-公开

    公开(公告)号：WO2021186110A1

    公开(公告)日：2021-09-23

    申请号：PCT/FI2021/050191

    申请日：2021-03-17

    Applicant: KEMIRA OYJ

    Inventor： KARPPI, Asko ,  TIMPERI, Salla ,  HIETANIEMI, Matti

    IPC: D21H17/06 ,  D21H17/37 ,  D21H17/38 ,  D21H21/10 ,  D21H21/18

    Abstract: An aqueous prepolymer composition, which comprises a polyacrylamide base polymer comprising 10 – 40 mol-% of cationic monomers and having a weight average molecular weight Mw in the range of 120 000 – 350 000 g/mol, 0.1 - 1 weight-% of glyoxal, calculated from the total weight of the aqueous prepolymer composition, and a buffering acid for adjusting pH of the composition in the range of 2 - 4. A prepolymer composition is used in a method for producing on-site glyoxylated polyacrylamide useful in paper or board manufacturing.

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