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1. WO2022010959 - STRENGTH IMPROVEMENT VIA SPRAYBOOM APPLICATION

Publication Number WO/2022/010959
Publication Date 13.01.2022
International Application No. PCT/US2021/040605
International Filing Date 07.07.2021
IPC
D21H 17/37 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
37Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
D21H 17/42 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
41containing ionic groups
42anionic
D21H 17/44 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
17Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
20Macromolecular organic compounds
33Synthetic macromolecular compounds
34obtained by reactions only involving carbon-to-carbon unsaturated bonds
41containing ionic groups
44cationic
D21H 21/18 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
21Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper impregnating or coating material, characterised by its function, form or properties
14characterised by function or properties in or on the paper
18Reinforcing agents
D21H 23/28 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
23Processes or apparatus for adding material to the pulp or to the paper
02characterised by the manner in which substances are added
22Addition to the formed paper
24during paper manufacture
26by selecting point of addition or moisture content of the paper
28Addition before the dryer section, e.g. at the wet end or press section
D21H 23/50 2006.1
DTEXTILES; PAPER
21PAPER-MAKING; PRODUCTION OF CELLULOSE
HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C, D21D84; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G97; PAPER NOT OTHERWISE PROVIDED FOR
23Processes or apparatus for adding material to the pulp or to the paper
02characterised by the manner in which substances are added
22Addition to the formed paper
50Spraying or projecting
Applicants
  • ECOLAB USA INC. [US]/[US]
Inventors
  • JORDAN, David, Steven
  • HUANG, Heqing
  • CHENG, Weiguo
  • WEI, Mingli
  • LIU, Mei
  • GRANGER, William, Arthur
Agents
  • BABYCH, Eric, D.
Priority Data
63/048,74107.07.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) STRENGTH IMPROVEMENT VIA SPRAYBOOM APPLICATION
(FR) AMÉLIORATION DE LA RÉSISTANCE PAR L'INTERMÉDIAIRE D'UNE APPLICATION DE RAMPE DE PULVÉRISATION
Abstract
(EN) The present disclosure provides methods and compositions for strengthening paper. The methods may include a step of spraying an anionic polymer onto a paper sheet to increase the strength of the paper sheet. The anionic polymer may have amino groups, amide groups, or a combination of amino groups and amide groups. These groups may be functionalized with an aldehyde. Methods may also include a step of adding a wet end composition to a wet end of the papermaking process.
(FR) La présente invention concerne des procédés et des compositions pour renforcer le papier. Les procédés peuvent comprendre une étape de pulvérisation d'un polymère anionique sur une feuille de papier pour augmenter la résistance de la feuille de papier. Le polymère anionique peut avoir des groupements amine, des groupements amide, ou une combinaison de groupements amine et de groupements amide. Ces groupements peuvent être fonctionnalisés avec un aldéhyde. Les procédés peuvent également comprendre une étape d'ajout d'une composition de partie humide à une partie humide du processus de fabrication de papier.
Latest bibliographic data on file with the International Bureau