RU2003114747A - MANUFACTURE OF PAPER AND PAPERBOARD - Google Patents

MANUFACTURE OF PAPER AND PAPERBOARD

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Publication number
RU2003114747A
RU2003114747A RU2003114747/12A RU2003114747A RU2003114747A RU 2003114747 A RU2003114747 A RU 2003114747A RU 2003114747/12 A RU2003114747/12 A RU 2003114747/12A RU 2003114747 A RU2003114747 A RU 2003114747A RU 2003114747 A RU2003114747 A RU 2003114747A
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RU
Russia
Prior art keywords
suspension
silicon
microparticles
containing material
polymer
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RU2003114747/12A
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Russian (ru)
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RU2265097C2 (en
Inventor
Гордон Чэн И ЧЭНЬ
Гэри Питер РИЧАРДСОН
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Циба Спешиалти Кемикэлз Уотер
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Publication of RU2003114747A publication Critical patent/RU2003114747A/en
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Publication of RU2265097C2 publication Critical patent/RU2265097C2/en

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Claims (28)

1. Способ изготовления бумаги или картона, включающий приготовление целлюлозной суспензии, флокуляцию этой суспензии, дренирование суспензии на сетке с формованием бумажного полотна и затем сушку этого бумажного полотна, отличающийся тем, что суспензию флокулируют с использованием флокулянтной системы, включающей кремнийсодержащий материал и органические микрочастицы, диаметр которых в ненабухшем состоянии составляет меньше 750 нм.1. A method of manufacturing paper or paperboard, including preparing a cellulosic suspension, flocculating this suspension, draining the suspension on a grid to form a paper web and then drying this paper web, characterized in that the suspension is flocculated using a flocculant system comprising a silicon-containing material and organic microparticles, whose diameter in the non-swollen state is less than 750 nm. 2. Способ по п.1, в котором микрочастицы проявляют вязкость раствора по меньшей мере 1,1 мПа·с и содержание сшивающего агента больше 4 молярных част./млн в пересчете на мономерные звенья.2. The method according to claim 1, in which the microparticles exhibit a solution viscosity of at least 1.1 MPa · s and a crosslinking agent content of more than 4 molar ppm based on the monomer units. 3. Способ по п.1 или 2, в котором степень ионности этих микрочастиц составляет по меньшей мере 5,0%, причем более предпочтительны анионоактивные микрочастицы.3. The method according to claim 1 or 2, in which the ionicity of these microparticles is at least 5.0%, more preferably anionic microparticles. 4. Способ по любому из пп.1-3, в котором микрочастицы представляют собой микрошарики, размер которых составляет меньше 750 нм, если они сшиты, и меньше 60 нм, если они несшиты и нерастворимы в воде.4. The method according to any one of claims 1 to 3, in which the microparticles are beads, the size of which is less than 750 nm, if they are crosslinked, and less than 60 nm, if they are uncrosslinked and insoluble in water. 5. Способ по пп.1-4, в котором микрочастицы проявляют реологическое осцилляционное значение тангенса дельта при 0,005 Гц ниже 0,7 при концентрации полимера в воде 1,5 мас.%.5. The method according to claims 1 to 4, in which the microparticles exhibit a rheological oscillation value of the tangent delta at 0.005 Hz below 0.7 at a polymer concentration in water of 1.5 wt.%. 6. Способ по п.5, в котором значение тангенса дельта составляет ниже 0,5, предпочтительно находится в интервале от 0,1 до 0,3.6. The method according to claim 5, in which the value of the tangent delta is below 0.5, preferably is in the range from 0.1 to 0.3. 7. Способ по любому из пп.1-6, в котором материал, представляющий собой кремнийсодержащий материал, выбирают из группы, включающей частицы на кремнийдиоксидной основе, кремнийдиоксидные микрогели, коллоидный кремнезем, коллоидные растворы кремнекислоты, силикагели, полисиликаты, катионоактивный диоксид кремния, алюмосиликаты, полиалюмосиликаты, борсиликаты, полиборсиликаты, цеолиты и набухающие глины.7. The method according to any one of claims 1 to 6, in which the material, which is a silicon-containing material, is selected from the group consisting of particles based on silicon dioxide, silicon dioxide microgels, colloidal silica, colloidal solutions of silicic acid, silica gels, polysilicates, cationic silicon dioxide, aluminosilicates , polyaluminosilicates, borosilicates, polyborsilicates, zeolites and swelling clays. 8. Способ по любому из пп.1-7, в котором кремнийсодержащий материал представляет собой анионоактивный материал в форме микрочастиц.8. The method according to any one of claims 1 to 7, in which the silicon-containing material is an anionic material in the form of microparticles. 9. Способ по любому из пп.1-8, в котором кремнийсодержащий материал представляет собой глину бентонитного типа.9. The method according to any one of claims 1 to 8, in which the silicon-containing material is a clay of the bentonite type. 10. Способ по любому из пп.1-9, в котором кремнийсодержащий материал выбирают из группы, включающей гекторит, смектиты, монтмориллониты, нонтрониты, сапонит, соконит, гормиты, аттапульгиты и сепиолиты.10. The method according to any one of claims 1 to 9, in which the silicon-containing material is selected from the group comprising hectorite, smectites, montmorillonites, nontronites, saponite, coconite, hormones, attapulgites and sepiolites. 11. Способ по любому из пп.1-10, в котором компоненты флокулянтной системы вводят в целлюлозную суспензию последовательно.11. The method according to any one of claims 1 to 10, in which the components of the flocculant system are introduced into the cellulosic suspension sequentially. 12. Способ по любому из пп.1-11, в котором в суспензию вводят кремнийсодержащий материал, а затем в суспензию вводят полимерные микрочастицы.12. The method according to any one of claims 1 to 11, in which silicon-containing material is introduced into the suspension, and then polymer microparticles are introduced into the suspension. 13. Способ по любому из пп.1-12, в котором в суспензию вводят полимерные микрочастицы, а затем в суспензию вводят кремнийсодержащий материал.13. The method according to any one of claims 1 to 12, in which polymer microparticles are introduced into the suspension, and then a silicon-containing material is introduced into the suspension. 14. Способ по любому из пп.1-13, в котором перед введением в целлюлозную суспензию полимерных микрочастиц и кремнийсодержащего материала эту суспензию обрабатывают добавлением дополнительного флокулянтного материала.14. The method according to any one of claims 1 to 13, in which before introducing into the cellulosic suspension of polymer microparticles and silicon-containing material, this suspension is processed by adding additional flocculant material. 15. Способ по п.14, в котором дополнительный флокулянтный материал представляет собой катионоактивныи материал, выбранный из группы, включающей водорастворимые катионоактивные органические полимеры, неорганические материалы, такие как квасцы, полиалюминийхлорид, тригидрат алюминийхлорида и алюминийхлоргидрат.15. The method according to 14, in which the additional flocculant material is a cationic material selected from the group comprising water-soluble cationic organic polymers, inorganic materials such as alum, polyaluminium chloride, aluminum chloride trihydrate and aluminum chloride. 16. Способ по любому из пп.1-16, в котором флокулянтная система дополнительно включает по меньшей мере один дополнительный флокулянт/коагулянт.16. The method according to any one of claims 1 to 16, in which the flocculant system further includes at least one additional flocculant / coagulant. 17. Способ по п.16, в котором флокулянт/коагулянт представляет собой водорастворимый полимер, предпочтительно водорастворимый катионоактивный полимер.17. The method according to clause 16, in which the flocculant / coagulant is a water-soluble polymer, preferably a water-soluble cationic polymer. 18. Способ по п.15 или 17, в котором катионоактивный полимер получают из водорастворимого этиленово-ненасыщенного мономера или водорастворимой смеси этиленово-ненасыщенных мономеров, включающей по меньшей мере один катионоактивный мономер.18. The method according to clause 15 or 17, in which the cationic polymer is obtained from a water-soluble ethylenically unsaturated monomer or a water-soluble mixture of ethylenically unsaturated monomers, comprising at least one cationic monomer. 19. Способ по пп.15, 17 или 18, в котором катионоактивный полимер представляет собой разветвленный катионоактивный полимер, который обладает характеристической вязкостью больше 3 дл/г и проявляет реологическое осцилляционное значение тангенса дельта при 0,005 Гц больше 0,7.19. The method according to claims 15, 17 or 18, wherein the cationic polymer is a branched cationic polymer that has an intrinsic viscosity greater than 3 dl / g and exhibits a rheological oscillation value of the delta tangent at 0.005 Hz greater than 0.7. 20. Способ по п.15 или любому из пп.17-19, в котором катионоактивный полимер обладает характеристической вязкостью больше 3 дл/г и проявляет реологическое осцилляционное значение тангенса дельта при 0,005 Гц больше 1,1.20. The method according to clause 15 or any one of claims 17-19, wherein the cationic polymer has an intrinsic viscosity of greater than 3 dl / g and exhibits a rheological oscillation value of the tangent delta at 0.005 Hz of greater than 1.1. 21. Способ по любому из пп.1-20, в котором после добавления по меньшей мере одного из компонентов флокулянтной системы суспензию подвергают механической обработке сдвиговым воздействием.21. The method according to any one of claims 1 to 20, in which after adding at least one of the components of the flocculant system, the suspension is subjected to shearing by mechanical treatment. 22. Способ по любому из пп.1-22, в котором суспензию вначале флокулируют введением катионоактивного полимера, необязательно подвергают эту суспензию механической обработке сдвиговым воздействием, а затем суспензию повторно флокулируют введением полимерных микрочастиц и кремнийсодержащего материала.22. The method according to any one of claims 1 to 22, in which the suspension is first flocculated by the introduction of a cationic polymer, optionally the suspension is sheared by mechanical treatment, and then the suspension is re-flocculated by the introduction of polymer microparticles and a silicon-containing material. 23. Способ по п.22, в котором целлюлозную суспензию повторно флокулируют введением кремнийсодержащего материала, а затем полимерных микрочастиц.23. The method according to item 22, in which the cellulosic suspension is re-flocculated by the introduction of silicon-containing material, and then polymer microparticles. 24. Способ по п.23, в котором целлюлозную суспензию повторно флокулируют введением полимерных микрочастиц, а затем кремнийсодержащего материала.24. The method according to item 23, in which the cellulosic suspension is re-flocculated by the introduction of polymer microparticles, and then a silicon-containing material. 25. Способ по любому из пп.1-24, в котором целлюлозная суспензия включает наполнитель.25. The method according to any one of claims 1 to 24, in which the cellulosic suspension comprises a filler. 26. Способ по п.25, в котором целлюлозная суспензия включает наполнитель в количестве до 40 мас.% в пересчете на массу сухой суспензии.26. The method according A.25, in which the cellulosic suspension includes a filler in an amount up to 40 wt.% In terms of the weight of the dry suspension. 27. Способ по п.25 или 26, в котором наполнительный материал выбирают из осажденного карбоната кальция, измельченного карбоната кальция, глины (преимущественно каолина) и диоксида титана.27. The method according A.25 or 26, in which the filler material is selected from precipitated calcium carbonate, ground calcium carbonate, clay (mainly kaolin) and titanium dioxide. 28. Способ по любому из пп.1-24, в котором целлюлозная суспензия по существу свободна от наполнителя.28. The method according to any one of claims 1 to 24, in which the cellulosic suspension is essentially free of filler.
RU2003114747/12A 2000-10-16 2001-10-04 Method for manufacture of paper and cardboard RU2265097C2 (en)

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