AU2015411565B2 - Method of increasing drainage performance of a pulp slurry during manufacture of paper products, and products therefrom - Google Patents

Method of increasing drainage performance of a pulp slurry during manufacture of paper products, and products therefrom Download PDF

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Publication number
AU2015411565B2
AU2015411565B2 AU2015411565A AU2015411565A AU2015411565B2 AU 2015411565 B2 AU2015411565 B2 AU 2015411565B2 AU 2015411565 A AU2015411565 A AU 2015411565A AU 2015411565 A AU2015411565 A AU 2015411565A AU 2015411565 B2 AU2015411565 B2 AU 2015411565B2
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AU
Australia
Prior art keywords
pulp slurry
microfibrillated cellulose
cellulose
associative polymer
pulp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
AU2015411565A
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English (en)
Other versions
AU2015411565A1 (en
Inventor
John C. Harrington
Kate Marritt Lusvardi
Fushan Zhang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solenis Technologies LP Switzerland
UPM Kymmene Oy
Original Assignee
Solenis Technologies LP Switzerland
UPM Kymmene Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Solenis Technologies LP Switzerland, UPM Kymmene Oy filed Critical Solenis Technologies LP Switzerland
Publication of AU2015411565A1 publication Critical patent/AU2015411565A1/en
Application granted granted Critical
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Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/21—Macromolecular organic compounds of natural origin; Derivatives thereof
    • D21H17/24—Polysaccharides
    • D21H17/25—Cellulose
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D21H17/375—Poly(meth)acrylamide
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/16—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only modified by a particular after-treatment
    • D21H11/18—Highly hydrated, swollen or fibrillatable fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/37—Polymers of unsaturated acids or derivatives thereof, e.g. polyacrylates
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/38—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing crosslinkable groups
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/42—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups anionic
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/42—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups anionic
    • D21H17/43—Carboxyl groups or derivatives thereof
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/34—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/41—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups
    • D21H17/44—Synthetic macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing ionic groups cationic
    • D21H17/45—Nitrogen-containing groups
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
    • D21H17/72—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic material
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-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
    • D21H21/06—Paper forming aids
    • D21H21/10—Retention agents or drainage improvers
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
    • D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
    • D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H3/00—Paper or cardboard prepared by adding substances to the pulp or to the formed web on the paper-making machine and by applying substances to finished paper or cardboard (on the paper-making machine), also when the intention is to impregnate at least a part of the paper body

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
AU2015411565A 2015-10-12 2015-10-12 Method of increasing drainage performance of a pulp slurry during manufacture of paper products, and products therefrom Active AU2015411565B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
PCT/US2015/055155 WO2017065740A1 (en) 2015-10-12 2015-10-12 Method of increasing drainage performance of a pulp slurry during manufacture of paper products, and products therefrom
US14/880,873 2015-10-12
US14/880,873 US9873982B2 (en) 2015-10-12 2015-10-12 Method of increasing drainage performance of a pulp slurry during manufacture of paper products, and products therefrom

Publications (2)

Publication Number Publication Date
AU2015411565A1 AU2015411565A1 (en) 2018-05-10
AU2015411565B2 true AU2015411565B2 (en) 2020-10-29

Family

ID=54478953

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2015411565A Active AU2015411565B2 (en) 2015-10-12 2015-10-12 Method of increasing drainage performance of a pulp slurry during manufacture of paper products, and products therefrom

Country Status (13)

Country Link
US (1) US9873982B2 (enExample)
EP (1) EP3362601A1 (enExample)
JP (1) JP7173677B2 (enExample)
KR (1) KR102533378B1 (enExample)
CN (1) CN108603342A (enExample)
AU (1) AU2015411565B2 (enExample)
BR (1) BR112018007308B1 (enExample)
CA (1) CA3001674C (enExample)
CL (1) CL2018000922A1 (enExample)
MX (1) MX2018004513A (enExample)
RU (1) RU2703224C1 (enExample)
WO (1) WO2017065740A1 (enExample)
ZA (1) ZA201802621B (enExample)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL3090099T3 (pl) * 2013-12-30 2018-11-30 Kemira Oyj Sposób zapewnienia kompozycji wstępnie traktowanego wypełniacza i jej zastosowanie przy wytwarzaniu papieru i kartonu
HU231176B1 (hu) 2019-03-20 2021-06-28 Celltech-Paper Kft. Eljárás nedvszívó betétek gyártásakor keletkező, nedves-szilárdító anyaggal legalább részben bevont gyapotszálakat tartalmazó hulladékpapír újrahasznosítására, és az eljárással újrahasznosítható hulladékpapírból készült csomagolóanyag
US12421665B2 (en) 2020-06-09 2025-09-23 Iti Technologies, Inc. Paper enhancing compositions, uses thereof and enhanced paper
US20210381169A1 (en) 2020-06-09 2021-12-09 Iti Technologies, Inc. Paper enhancing compositions, uses thereof and enhanced paper
CN116710612B (zh) 2020-12-04 2025-10-10 旭硝子化学美国有限公司 处理制品，制造处理制品的方法，和用于制造处理制品的分散体
US20230250005A1 (en) * 2022-02-08 2023-08-10 Solenis Technologies, L.P. Method of dewatering sludge

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000047628A2 (en) * 1999-02-10 2000-08-17 Hercules Incorporated Derivatized microfibrillar polysaccharide
EP2319984A1 (en) * 2009-11-04 2011-05-11 Kemira Oyj Process for production of paper
WO2013089638A1 (en) * 2011-12-15 2013-06-20 Innventia Ab System and process for improving paper and paper board
US8647470B2 (en) * 2009-10-20 2014-02-11 Basf Se Method for producing paper, paperboard and cardboard having high dry strength
WO2014147295A1 (en) * 2013-03-20 2014-09-25 Ahlstrom Corporation Fibrous substrate containing fibers and nanofibrillar polysaccharide
US8980058B2 (en) * 2013-02-05 2015-03-17 Goldeast Paper (Jiangsu) Co., Ltd Modified filler composition, pulp and paper using same

Family Cites Families (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE22474E (en) 1944-05-09 Process and appabatus for control
US3284393A (en) 1959-11-04 1966-11-08 Dow Chemical Co Water-in-oil emulsion polymerization process for polymerizing watersoluble monomers
USRE28576E (en) 1970-12-15 1975-10-21 Process for rapid dissolving water-soluble vinyl addition polymers using water-in-oil emulsions
USRE28474F1 (en) 1970-12-15 1983-12-20 Nalco Chemical Co Process for rapidly dissolving water-soluble polymers
SE432951B (sv) 1980-05-28 1984-04-30 Eka Ab Pappersprodukt innehallande cellulosafibrer och ett bindemedelssystem som omfattar kolloidal kiselsyra och katjonisk sterkelse samt forfarande for framstellning av pappersprodukten
GB8602121D0 (en) 1986-01-29 1986-03-05 Allied Colloids Ltd Paper & paper board
US5185206A (en) 1988-09-16 1993-02-09 E. I. Du Pont De Nemours And Company Polysilicate microgels as retention/drainage aids in papermaking
US5167766A (en) 1990-06-18 1992-12-01 American Cyanamid Company Charged organic polymer microbeads in paper making process
US5274055A (en) 1990-06-11 1993-12-28 American Cyanamid Company Charged organic polymer microbeads in paper-making process
US5171808A (en) 1990-06-11 1992-12-15 American Cyanamid Company Cross-linked anionic and amphoteric polymeric microparticles
JP3421446B2 (ja) * 1994-09-08 2003-06-30 特種製紙株式会社 粉体含有紙の製造方法
ES2173498T3 (es) * 1996-12-31 2002-10-16 Ciba Spec Chem Water Treat Ltd Procesos de fabricacion de papel y materiales para usar en este.
TW550325B (en) 1999-11-08 2003-09-01 Ciba Spec Chem Water Treat Ltd Manufacture of paper and paperboard
TW524910B (en) 1999-11-08 2003-03-21 Ciba Spec Chem Water Treat Ltd Manufacture of paper and paperboard
US6602992B1 (en) 2000-02-18 2003-08-05 Northwestern University Mammalian prestin polynucleotides
MY140287A (en) 2000-10-16 2009-12-31 Ciba Spec Chem Water Treat Ltd Manufacture of paper and paperboard
DE60235268D1 (de) 2001-12-07 2010-03-18 Hercules Inc Anionische Copolymere erhältlich in inverser Emulsion sowie deren Verwendung zur Herstellung von Cellulosefaser-Mischungen
US7396874B2 (en) 2002-12-06 2008-07-08 Hercules Incorporated Cationic or amphoteric copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions
CN101133211A (zh) * 2004-12-29 2008-02-27 赫尔克里士公司 造纸中留着和滤水的改进
US20060266488A1 (en) * 2005-05-26 2006-11-30 Doherty Erin A S Hydrophobic polymers and their use in preparing cellulosic fiber compositions
FI122548B (fi) 2010-09-17 2012-03-15 Upm Kymmene Corp Menetelmä vedenpoiston parantamiseksi
BR112013010261A2 (pt) 2010-10-29 2016-09-13 Buckman Lab Int Inc método para preparar papel ou papelão, sistema de fabricação de papel, produto e produto de papel
FI126513B (fi) 2011-01-20 2017-01-13 Upm Kymmene Corp Menetelmä lujuuden ja retention parantamiseksi ja paperituote
JP2012214943A (ja) * 2011-03-28 2012-11-08 Harima Chemicals Inc 紙または板紙の抄造方法およびその方法で抄造した紙または板紙
FI124832B (fi) 2011-11-15 2015-02-13 Upm Kymmene Corp Paperituote sekä menetelmä ja järjestelmä paperituotteen valmistamiseksi
RU2015116429A (ru) 2012-10-05 2016-11-27 Спешелти Минералз (Мичиган) Инк. Суспензия наполнителя и ее использование в производстве бумаги
FI126216B (en) * 2013-03-26 2016-08-31 Kemira Oyj Procedure for the manufacture of cardboard

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000047628A2 (en) * 1999-02-10 2000-08-17 Hercules Incorporated Derivatized microfibrillar polysaccharide
US8647470B2 (en) * 2009-10-20 2014-02-11 Basf Se Method for producing paper, paperboard and cardboard having high dry strength
EP2319984A1 (en) * 2009-11-04 2011-05-11 Kemira Oyj Process for production of paper
WO2013089638A1 (en) * 2011-12-15 2013-06-20 Innventia Ab System and process for improving paper and paper board
US8980058B2 (en) * 2013-02-05 2015-03-17 Goldeast Paper (Jiangsu) Co., Ltd Modified filler composition, pulp and paper using same
WO2014147295A1 (en) * 2013-03-20 2014-09-25 Ahlstrom Corporation Fibrous substrate containing fibers and nanofibrillar polysaccharide

Also Published As

Publication number Publication date
BR112018007308A2 (pt) 2018-10-23
CA3001674C (en) 2022-10-04
EP3362601A1 (en) 2018-08-22
MX2018004513A (es) 2019-04-22
AU2015411565A1 (en) 2018-05-10
WO2017065740A1 (en) 2017-04-20
RU2703224C1 (ru) 2019-10-15
CN108603342A (zh) 2018-09-28
CL2018000922A1 (es) 2019-04-26
CA3001674A1 (en) 2017-04-20
BR112018007308B1 (pt) 2023-03-07
KR102533378B1 (ko) 2023-05-22
KR20180125143A (ko) 2018-11-22
US9873982B2 (en) 2018-01-23
JP2018530685A (ja) 2018-10-18
ZA201802621B (en) 2021-05-26
NZ741574A (en) 2023-10-27
US20170101740A1 (en) 2017-04-13
JP7173677B2 (ja) 2022-11-16

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