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WO2023200370A1 - Method for producing a cationic starch binder for sizing paper - Google Patents

Method for producing a cationic starch binder for sizing paper Download PDF

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Publication number
WO2023200370A1
WO2023200370A1 PCT/RU2023/050062 RU2023050062W WO2023200370A1 WO 2023200370 A1 WO2023200370 A1 WO 2023200370A1 RU 2023050062 W RU2023050062 W RU 2023050062W WO 2023200370 A1 WO2023200370 A1 WO 2023200370A1
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WIPO (PCT)
Prior art keywords
starch
amount
cooking
producing
water
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.)
Ceased
Application number
PCT/RU2023/050062
Other languages
French (fr)
Russian (ru)
Inventor
Валерий Анатольевич ВИТВИНИН
Станислав Глебович ЕРМАКОВ
Константин Андреевич СИНЯЕВ
Эдуард Магерамович КУЛИЕВ
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Joint Stock Co 'goznak' 'goznak'
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Joint Stock Co 'goznak' 'goznak'
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Filing date
Publication date
Priority claimed from RU2022109785A external-priority patent/RU2790817C1/en
Application filed by Joint Stock Co 'goznak' 'goznak' filed Critical Joint Stock Co 'goznak' 'goznak'
Publication of WO2023200370A1 publication Critical patent/WO2023200370A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/04—Starch derivatives, e.g. crosslinked derivatives
    • 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
    • D21H17/28—Starch
    • D21H17/29—Starch cationic

Definitions

  • the invention relates to pulp and paper production and can be used in the production of paper, cardboard and other non-woven paper-like materials with intra-mass sizing with a starch binder.
  • the described method is a development of the technology for producing starch binders and is based on a previously developed method for producing a binder for surface sizing of paper RU 2627373.
  • the objective of the present invention is to create a simple method for producing a cationic starch binder for intra-mass sizing by simultaneous oxidation and cationization of natural starch in a continuous or batch mode, providing high productivity of the process and the ability to quickly regulate the concentration, viscosity and cationic charge of the target product.
  • the problem is solved by simultaneous processing of natural starch with a solution of ammonium or sodium persulfate, as well as a solution of a cationic polyelectrolyte based on copolymers of acrylamide and a cationic comonomer based on acrylic acid or acrylamide (for example, dimethylamino-propylacrylamide) at elevated temperature to obtain a binder with a given concentration and viscosity and cationic charge.
  • the processing process is carried out in a digester by simultaneously feeding starch of natural moisture, a solution of persulfuric acid salt with a flow rate of 0.2-2.5% by weight of absolutely dry starch, a solution of cationic polyelectrolyte with a flow rate of 1.5-5.0% by weight
  • SUBSTITUTE SHEET (RULE 26) absolutely dry starch and, if necessary, water, followed by continuous or batch cooking at a concentration of starch suspension in the range of 4-16% and a temperature of 95-130 °C for 20-40 s for continuous cooking and 20-50 min for batch cooking, with further dilution with water to the required concentration.
  • a technical result is achieved, which consists in obtaining and the possibility of easy and prompt regulation of the properties of the target product, ensuring its specified characteristics due to the possibility of quickly changing controlled process factors: dry starch consumption, oxidizing agent consumption, cationizing agent consumption, water consumption, temperature cooking, cooking duration.
  • Natural starch with a moisture content of 12% is processed at a temperature of 130 °C in an automatic continuous cooking unit with a solution of ammonium persulfate with a concentration of 20% with a consumption of 0.28% by weight of absolutely dry starch, as well as a solution of cationic polyelectrolyte with the trade name Praestafix 1250 in commercial form with consumption of 4.4% by weight of absolutely dry starch, with the addition of water based on cooking a suspension with a concentration of 15.0%.
  • the cooking duration is 30 seconds and is determined by the design of the heat exchanger of the cooking unit.
  • the starch binder is diluted with water to a concentration of 2% and has the following parameters: viscosity according to VZ-2 - 52-55 s, cationic charge of the sample diluted with distilled water in a ratio of 1:10 - 85-90 mEq/l.
  • Natural starch with a moisture content of 12% is treated in a batch digester with ammonium persulphate solution
  • SUBSTITUTE SHEET (RULE 26) concentration of 20% with a consumption of 0.2% by weight of absolutely dry starch, as well as a solution of cationic polyelectrolyte with the trade name Praestol 644 BC with a concentration of 0.15% with a consumption of 2% by weight of absolutely dry starch, with the addition of water based on cooking the suspension with a concentration of 4 % at 93 °C. Cooking time is 30 minutes.
  • the starch binder is diluted with water to a concentration of 2.5% and has the following parameters: viscosity according to VZ-2 - 60-63 s, cationic charge of the sample diluted with distilled water in a ratio of 1:10 - 92-97 mEq/l .

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Paper (AREA)

Abstract

A method for producing a cationic starch binder for in-pulp sizing relates to the production of paper, cardboard and paperlike materials. The technical result consists in the possibility of producing, and at the same time easily and efficiently adjusting the properties of, a target product with set characteristics as a result of the possibility of quickly altering the following process variables: amount of dry starch, amount of oxidant, amount of water, cooking temperature, and duration. The treatment process is carried out in a pulping reactor by simultaneously feeding in starch with a natural moisture content, a persulfate solution in an amount of 0.2-2.5% of the mass of bone-dry starch, a cationic polyelectrolyte solution in an amount of 1.5-5.0% of the mass of bone-dry starch and, if necessary water, then carrying out continuous cooking or batch cooking at a starch suspension concentration in a range of 4-16% and a temperature of 95-130°C for 20-40 seconds for continuous cooking and 20-50 minutes for batch cooking, and subsequently diluting with water to the desired concentration.

Description

СПОСОБ ПОЛУЧЕНИЯ КАТИОННОГО КРАХМАЛЬНОГО СВЯЗУЮЩЕГО ДЛЯ ПРОКЛЕЙКИ БУМАГИ METHOD FOR PRODUCING CATIONIC STARCH BINDER FOR PAPER SIZING

Изобретение относится к целлюлозно-бумажному производству и может быть использовано при изготовлении бумаги, картона и других нетканых бумагоподобных материалов с внутримассной проклейкой крахмальным связующим. The invention relates to pulp and paper production and can be used in the production of paper, cardboard and other non-woven paper-like materials with intra-mass sizing with a starch binder.

Описываемый способ является развитием технологии получения крахмальных связующих и базируется на ранее разработанном способе получения связующего для поверхностной проклейки бумаги RU 2627373. The described method is a development of the technology for producing starch binders and is based on a previously developed method for producing a binder for surface sizing of paper RU 2627373.

Задачей настоящего изобретения является создание простого способа получения катионного крахмального связующего для внутримассной проклейки путём единовременного окисления и катионизации природного крахмала в непрерывном или периодическом режиме, обеспечивающего высокую производительность процесса и возможность оперативного регулирования концентрации, вязкости и катионного заряда целевого продукта. The objective of the present invention is to create a simple method for producing a cationic starch binder for intra-mass sizing by simultaneous oxidation and cationization of natural starch in a continuous or batch mode, providing high productivity of the process and the ability to quickly regulate the concentration, viscosity and cationic charge of the target product.

Поставленная задача решается путем единовременной обработки природного крахмала раствором надсернокислого аммония или натрия, а также раствором катионного полиэлектролита на основе сополимеров акриламида и катионного сомономера на основе акриловой кислоты или акриламида (например, диметиламино-пропилакриламида) при повышенной температуре с получением связующего с заданными концентрацией, вязкостью и катионным зарядом. The problem is solved by simultaneous processing of natural starch with a solution of ammonium or sodium persulfate, as well as a solution of a cationic polyelectrolyte based on copolymers of acrylamide and a cationic comonomer based on acrylic acid or acrylamide (for example, dimethylamino-propylacrylamide) at elevated temperature to obtain a binder with a given concentration and viscosity and cationic charge.

Процесс обработки осуществляют в варочном реакторе путём одновременной подачи крахмала естественной влажности, раствора соли надсерной кислоты с расходом 0,2-2, 5 % от массы абсолютно сухого крахмала, раствора катионного полиэлектролита с расходом 1, 5-5,0 % от массы The processing process is carried out in a digester by simultaneously feeding starch of natural moisture, a solution of persulfuric acid salt with a flow rate of 0.2-2.5% by weight of absolutely dry starch, a solution of cationic polyelectrolyte with a flow rate of 1.5-5.0% by weight

1 1

ЗАМЕНЯЮЩИЙ ЛИСТ (ПРАВИЛО 26) абсолютно сухого крахмала и, при необходимости, воды, последующей непрерывной или периодической варки при концентрации крахмальной суспензии в пределах 4-16 % и температуре 95-130 °C в течение 20-40 с для непрерывной варки и 20-50 мин - для периодической, с дальнейшим разбавлением водой до необходимой концентрации. SUBSTITUTE SHEET (RULE 26) absolutely dry starch and, if necessary, water, followed by continuous or batch cooking at a concentration of starch suspension in the range of 4-16% and a temperature of 95-130 °C for 20-40 s for continuous cooking and 20-50 min for batch cooking, with further dilution with water to the required concentration.

В объёме заявленной совокупности признаков достигается технический результат, заключающийся в получении и возможности лёгкого и оперативного регулирования свойств целевого продукта с обеспечением его заданных характеристик за счёт возможности быстрого изменения управляемых факторов процесса: расхода сухого крахмала, расхода окислителя, расхода катионизирующего агента, расхода воды, температуры варки, продолжительности варки. Within the scope of the stated set of features, a technical result is achieved, which consists in obtaining and the possibility of easy and prompt regulation of the properties of the target product, ensuring its specified characteristics due to the possibility of quickly changing controlled process factors: dry starch consumption, oxidizing agent consumption, cationizing agent consumption, water consumption, temperature cooking, cooking duration.

Ниже приведены примеры осуществления изобретения, проведённые методом непрерывной и периодической варки. Below are examples of implementation of the invention carried out using the method of continuous and batch cooking.

Пример 1 Example 1

Природный крахмал с влажностью 12 % обрабатывают при температуре 130 °C на автоматической варочной установке непрерывного действия раствором аммония надсернокислого концентрацией 20 % с расходом 0,28 % от массы абсолютно сухого крахмала, а также раствором катионного полиэлектролита с торговым названием Praestafix 1250 в товарном виде с расходом 4,4 % от массы абсолютно сухого крахмала, с добавлением воды из расчёта варки суспензии концентрацией 15,0 %. Продолжительность варки составляет 30 с и обусловлена конструкцией теплообменника варочной установки. На выходе из установки крахмальное связующее разбавляется водой до концентрации 2 % и имеет параметры: вязкость по ВЗ-2 - 52-55 с, катионный заряд пробы, разбавленной дистиллированной водой в соотношении 1:10 - 85-90 мг-экв/л. Natural starch with a moisture content of 12% is processed at a temperature of 130 °C in an automatic continuous cooking unit with a solution of ammonium persulfate with a concentration of 20% with a consumption of 0.28% by weight of absolutely dry starch, as well as a solution of cationic polyelectrolyte with the trade name Praestafix 1250 in commercial form with consumption of 4.4% by weight of absolutely dry starch, with the addition of water based on cooking a suspension with a concentration of 15.0%. The cooking duration is 30 seconds and is determined by the design of the heat exchanger of the cooking unit. At the outlet of the installation, the starch binder is diluted with water to a concentration of 2% and has the following parameters: viscosity according to VZ-2 - 52-55 s, cationic charge of the sample diluted with distilled water in a ratio of 1:10 - 85-90 mEq/l.

Пример 2 Example 2

Природный крахмал с влажностью 12 % обрабатывают на варочной установке периодического действия раствором аммония надсернокислогоNatural starch with a moisture content of 12% is treated in a batch digester with ammonium persulphate solution

2 2

ЗАМЕНЯЮЩИЙ ЛИСТ (ПРАВИЛО 26) концентрацией 20 % с расходом 0,2 % от массы абсолютно сухого крахмала, а также раствором катионного полиэлектролита с торговым названием Praestol 644 ВС концентрацией 0,15 % с расходом 2 % от массы абсолютно сухого крахмала, с добавлением воды из расчёта варки суспензии концентрацией 4 % при температуре 93 °C. Продолжительность варки составляет 30 мин. На выходе из установки крахмальное связующее разбавляется водой до концентрации 2,5 % и имеет параметры: вязкость по ВЗ-2 - 60-63 с, катионный заряд пробы, разбавленной дистиллированной водой в соотношении 1 :10 - 92- 97 мг-экв/л. SUBSTITUTE SHEET (RULE 26) concentration of 20% with a consumption of 0.2% by weight of absolutely dry starch, as well as a solution of cationic polyelectrolyte with the trade name Praestol 644 BC with a concentration of 0.15% with a consumption of 2% by weight of absolutely dry starch, with the addition of water based on cooking the suspension with a concentration of 4 % at 93 °C. Cooking time is 30 minutes. At the outlet of the installation, the starch binder is diluted with water to a concentration of 2.5% and has the following parameters: viscosity according to VZ-2 - 60-63 s, cationic charge of the sample diluted with distilled water in a ratio of 1:10 - 92-97 mEq/l .

3 3

ЗАМЕНЯЮЩИЙ ЛИСТ (ПРАВИЛО 26) SUBSTITUTE SHEET (RULE 26)

Claims

ФОРМУЛА ИЗОБРЕТЕНИЯ CLAIM Способ получения катионного крахмального связующего для проклейки бумаги путём обработки крахмала водным раствором соли надсерной кислоты и катионного полиэлектролита, отличающийся тем, что обработку осуществляют путем одновременной подачи с перемешиванием крахмала естественной влажности, раствора соли надсерной кислоты в количестве 0,2 - 2,5 % от массы абсолютно сухого крахмала и раствора катионного полиэлектролита с расходом 1, 5-5,0 % от массы абсолютно сухого крахмала при концентрации крахмальной суспензии в пределах 4-16 % и температуре 95-130 °C в течение не более 50 мин с последующим разбавлением водой до необходимой концентрации. A method for producing a cationic starch binder for sizing paper by treating starch with an aqueous solution of a persulfuric acid salt and a cationic polyelectrolyte, characterized in that the treatment is carried out by simultaneously feeding, with stirring, starch of natural moisture, a solution of a persulfuric acid salt in an amount of 0.2 - 2.5% of mass of absolutely dry starch and cationic polyelectrolyte solution with a consumption of 1.5-5.0% of the mass of absolutely dry starch at a starch suspension concentration of 4-16% and a temperature of 95-130 °C for no more than 50 minutes, followed by dilution with water to the required concentration. ЗАМЕНЯЮЩИЙ ЛИСТ (ПРАВИЛО 26) SUBSTITUTE SHEET (RULE 26)
PCT/RU2023/050062 2022-04-12 2023-03-24 Method for producing a cationic starch binder for sizing paper Ceased WO2023200370A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2022109785A RU2790817C1 (en) 2022-04-12 Method for producing cationic starch binder for paper sizing
RU2022109785 2022-04-12

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WO2023200370A1 true WO2023200370A1 (en) 2023-10-19

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272297A (en) * 1978-01-18 1981-06-09 Blue Circle Industries Limited Compositions for use with papermaking fillers
SU1491922A1 (en) * 1987-12-28 1989-07-07 Центральный научно-исследовательский институт бумаги Method of producing starch binder for surface sizing of paper
RU2538582C2 (en) * 2009-04-29 2015-01-10 Упм-Кюммене Корпорейшн Method of production of paper and paper composition
US20150068697A1 (en) * 2012-03-23 2015-03-12 Kemira Oyj Method for dissolving cationic starch, papermaking agent and its use
RU2627373C1 (en) * 2016-12-12 2017-08-08 Акционерное общество "ГОЗНАК" Method for producing starch binding for surface paper sizing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272297A (en) * 1978-01-18 1981-06-09 Blue Circle Industries Limited Compositions for use with papermaking fillers
SU1491922A1 (en) * 1987-12-28 1989-07-07 Центральный научно-исследовательский институт бумаги Method of producing starch binder for surface sizing of paper
RU2538582C2 (en) * 2009-04-29 2015-01-10 Упм-Кюммене Корпорейшн Method of production of paper and paper composition
US20150068697A1 (en) * 2012-03-23 2015-03-12 Kemira Oyj Method for dissolving cationic starch, papermaking agent and its use
RU2627373C1 (en) * 2016-12-12 2017-08-08 Акционерное общество "ГОЗНАК" Method for producing starch binding for surface paper sizing

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHAUHAN VIPUL SINGH, BHARDWAJ NISHI KANT: "Cationic Starch Preflocculated Filler for Improvement in Filler Bondability and Composite Tensile Index of Paper", INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, vol. 53, no. 29, 23 July 2014 (2014-07-23), pages 11622 - 11628, XP093103159, ISSN: 0888-5885, DOI: 10.1021/ie502008d *
ZHITNYUK V.A., SHIRINKINA E.S., VAISMAN Y.I., BELKINA E.V., IDIATULLIN A.M.: "Issledovanie vliyaniya uderzhivayushchikh reagentov na fiksatsiyu rastvorennogo krakhmala v bumazhnom polotne [STUDY OF THE INFLUENCE OF RETENTION REAGENTS ON THE FIXATION OF DISSOLVED STARCH IN PAPER CLOTH]", HERALD OF THE KAZAN TECHNOLOGICAL UNIVERSITY, vol. 19, no. 1, 30 November 2015 (2015-11-30), RU , pages 127 - 130, XP009550385, ISSN: 1998-7072 *

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