CN1139691C - Process for prodn. of paper - Google Patents

Process for prodn. of paper Download PDF

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Publication number
CN1139691C
CN1139691C CNB998055328A CN99805532A CN1139691C CN 1139691 C CN1139691 C CN 1139691C CN B998055328 A CNB998055328 A CN B998055328A CN 99805532 A CN99805532 A CN 99805532A CN 1139691 C CN1139691 C CN 1139691C
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technology
polysaccharide
suspended substance
paper
aforementioned
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CN1299425A (en
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����M�������ɭ
M·伯森
��������ķ������
H·霍尔斯特罗姆
J·卡伦
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Akzo Nobel NV
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    • 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
    • D21H23/06—Controlling the addition
    • D21H23/08—Controlling the addition by measuring pulp properties, e.g. zeta potential, pH
    • 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
    • D21H11/00—Pulp or paper, comprising cellulose or lignocellulose fibres of natural origin only
    • D21H11/14—Secondary 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
    • D21H17/01—Waste products, e.g. sludge
    • 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
    • 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
    • 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
    • D21H17/31—Gums
    • D21H17/32—Guar or other polygalactomannan gum
    • 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
    • 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
    • D21H17/455—Nitrogen-containing groups comprising tertiary amine or being at least partially quaternised
    • 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
    • D21H17/63—Inorganic compounds
    • D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
    • D21H17/68—Water-insoluble compounds, e.g. fillers, pigments siliceous, e.g. clays
    • 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
    • D21H23/06—Controlling the addition
    • D21H23/08—Controlling the addition by measuring pulp properties, e.g. zeta potential, pH
    • D21H23/10—Controlling the addition by measuring pulp properties, e.g. zeta potential, pH at least two kinds of compounds being added

Abstract

The invention relates to a process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, which comprises adding to the suspension a drainage and retention aid comprising a cationic or amphoteric polysaccharide, forming and dewatering the suspension on a wire, wherein the cationic poylsaccharide has a hydrophobic group. The invention further relates to a process for the production of paper from a suspension containing cellulosic fibres, and optional fillers, which comprises adding to the suspension a dry strength agent comprising a cationic or amphoteric polysaccharide, forming and dewatering the suspension on a wire, wherein the polysaccharide has a hydrophobic group.

Description

A kind of paper technology
The present invention relates to papermaking and relate more specifically to a kind of paper technology, wherein in the papermaking paper stock, add the cationic or amphoteric polysaccharide that has hydrophobic substituent.This process improving row filter and keep effect and improved the dry strength of the paper of making through this technology.
In paper technology, contain the aqueous suspension of optional filler of cellulose fiber peacekeeping and additive, promptly so-called paper stock is fed in the head box that paper stock can be sprayed onto on the forming web.From paper stock, arrange filtrate and form wet web on the net via forming web, and in the arid region of papermaking equipment, make further dehydration and dry of paper web.Deckering and the water that obtains, promptly so-called plain boiled water often contains small particle such as fine fibre, filler and additive, is generally all circulated in paper technology.Usually introducing helps filter/retention agent to be intended to help arranging filter and strengthens the adsorption effect of fine particle on cellulose fibre so that its energy and fiber are retained on the net in paper stock.Cationic and amphoteric polysaccharide such as cationic starch and cationic guar gum extensively are used as and help filter/retention agent.Polysaccharide can be used separately or use with other polymer and/or anionic microparticle material such as anionic inorganic particulate such as colloidal silica.Cationic and amphoteric polysaccharide also is widely used as dry strength agent, introduces it and can produce the paper that dry strength improves after in the paper stock.
The preparation of cationic polysaccharide generally is by polysaccharide and quaternizing agent such as 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride, 2, the reaction of 3-epoxypropyl trimethylammonium chloride ammonium and 2-chloroethyl trimethyl ammonium chloride.
U.S.No.4,388,150; 4,755,259; 4,961,825; 5,127,994; 5,643,414; 5,447,604; 5,277,764; 5,607,552; 5,603,805 and 5,858,174 and EP500,770 disclose cationic and amphoteric polysaccharide and anionic inorganic particulate are used as paper stock in papermaking additive.These additives are the most effective filter/retention agents that help in using at present.
The present invention finds, comprise by employing and have a hydrophobic substituent, promptly cationic the and/or amphoteric polysaccharide of a hydrophobic grouping help filter/retention agent, just can in paper-making process, improve to arrange and filter and keep effect.Cationic and/or the amphoteric polysaccharide of also finding to have a hydrophobic grouping can improve the dry strength of paper.More particularly, the present invention relates to a kind of technology of making paper from the suspended substance that contains the optional filler of cellulose fiber peacekeeping, it comprises the filter/retention agent that helps that comprises cationic or amphoteric polysaccharide to the suspended substance interpolation, suspended substance moulding on the net and dehydration, and wherein polysaccharide has a hydrophobic grouping.The invention further relates to a kind of technology of making paper from the suspended substance that contains the optional filler of cellulose fiber peacekeeping, it comprises the dry strength agent that comprises cationic or amphoteric polysaccharide to the suspended substance interpolation, suspended substance moulding on the net and dehydration, wherein polysaccharide has a hydrophobic grouping.One of the present invention preferred aspect, technology further comprises suspended substance moulding on the net and dehydration, obtain containing wet web or the paper and the plain boiled water of cellulose fibre, circulation plain boiled water and optional introducing fresh water contain the suspended substance of the one-tenth paper to be drained off of the optional filler of cellulose fiber peacekeeping with formation, and wherein the introducing amount of fresh water is that made dried paper low per ton is in 30 tons.
Technology of the present invention the row filter of improvement is provided and/or keep effect and thereby technology of the present invention make speed that improves papermaking equipment and the consumption that reduces additive but keep identical row's filter and keep effect becoming possibility, therefore paper technology has been carried out improving and having improved economic benefit.The another one benefit that the present invention can give comprises that the polysaccharide that has a hydrophobic grouping by employing has improved the dry strength of made paper.Therefore possible is that the dry strength agent of low consumption also can obtain identical paper dry strength.Technology of the present invention is applicable in closed grinding machine handles cellulosic suspension, and plain boiled water is repetitive cycling therein, only introduces a spot of fresh water.The present invention further be applicable to adopted salt content high and thereby the paper technology of the high cellulosic suspension of electrical conductivity, such as limited technology of the circulation of the plain boiled water degree of depth and fresh water supply and/or the used higher technology of fresh water salt content.
Polysaccharide of the present invention can be selected from any polysaccharide well known in the prior art, such as starch, guar gum, cellulose, chitin, chitosan, glycan, galactan, glucan, xanthans, pectin, mannosan, dextrin, preferred starch and guar gum.The suitable example of starch comprises the starch of potato, corn, wheat, cassava, paddy, waxy maize etc.Suitable cationic polysaccharide is aqueous dispersion or preferred water-soluble type.In an embodiment preferred of the present invention, polysaccharide can play the effect that helps filter/retention agent.Here used " helping filter/retention agent " speech refers to one or more components (auxiliary agent, reagent or additive), in adding paper stock to after, compare with the situation of not adding described one or more components, more can improve row filter and/or keep effect.In another one embodiment preferred of the present invention, polysaccharide can play the effect of dry strength agent.Here used " dry strength agent " speech refers at least one component (auxiliary agent, reagent or additive), in adding paper stock to after, compare with the situation of not adding described component, more can improve the dry strength of made papermaking.
Polysaccharide is the cationic or amphoteric polysaccharide of hydrophobic replacement, promptly has the polysaccharide of one or more hydrophobic groupings and one or more cation groups, and suitable cation group is tertiary amine group or preferred quaternary ammonium group.Polysaccharide also may contain one or more anionic groups, such as phosphoric acid, phosphonic acids, sulfuric acid, sulfonic acid or carboxyl, and the preferably phosphoric acid base.If any, anionic group can be natural or introduce through chemical treatment with common method; Natural potato starch contains the mono phosphoric acid ester ester group of a large amount of covalent bondings.In amphoteric polysaccharide, the content of preferred cationic group is main.
The hydrophobic grouping of polysaccharide can be bonded on the hetero atom such as oxygen contained in the polysaccharide.Hydrophobic grouping preferably is bonded on hetero atom such as nitrogen or the oxygen, the optional electric charge that has of hetero atom, such as with regard to nitrogen or comprise with regard to the group such as acid amides, ester or ether of this type of atom, itself so that can be bonded to (main chain) on the polysaccharide skeleton, such as by an atomic link.Hydrophobic grouping has at least 2, and generally at least 3, suitable at least 4 and preferred at least 6 carbon atoms; And general maximum about 20, suitable maximum 14 also preferred maximum 12 carbon atoms.Hydrophobic grouping can be selected from the combination of fragrance (aryl) base, aliphatic group and this type of group.The suitable example of hydrophobic fat base comprises line style, branching and cyclic alkyl such as ethyl; Propyl group such as n-pro-pyl and isopropyl; Butyl such as normal-butyl, isobutyl group and the tert-butyl group; Amyl group such as n-pentyl, neopentyl and isopentyl; Hexyl such as n-hexyl and cyclohexyl; Octyl group such as n-octyl; Decyl such as positive decyl; Dodecyl such as dodecyl; And myristyl.Aromatic radical and the suitable example that contains the aromatic radical group comprise aryl and aralkyl such as phenyl, phenylene, naphthyl, naphthylene, xylylene, benzyl and phenylethyl; Nitrogenous fragrance (aryl) base is as pyridine and quinoline, and the derivative of these groups, and the substituting group of wherein one or more and described aromatic radical bonding can be selected from the alkyl of hydroxyl, halogen such as chlorine, nitro and 1～4 carbon atom.
The suitable especially polysaccharide of the present invention comprises shown in the general formula (I):
Figure C9980553200071
Wherein P is the residue of polysaccharide; A is the group that makes N and polysaccharide residue radical bonding, be an atomic link aptly, it comprises C and H atom and optional O and/or N atom, it generally is the alkylidene of 2～18 and suitable 2～8 carbon atoms, optional to its insertion or replace with one or more hetero atoms such as O or N, such as alkylene oxide group or hydroxy propylidene (CH 2-CH (OH)-CH 2-); R 1And R 2Each is the alkyl of H or preferred 1～3 carbon atom, 1～2 carbon atom that suits naturally, is suitably alkyl; R 3Be the hydrophobic alkyl of at least 2 carbon atoms, suitable 4～14 and preferred 6～12 carbon atoms, preferably above-mentioned definition of hydrophobic grouping, preferred group is selected from alkyl and aralkyl such as benzyl and phenethyl; N is about integer of 2～about 300,000, suitable 5～200,000 and preferred 6～125,000, and perhaps another possibility is, R 1, R 2And R 3Form the aromatic radical of 5～12 carbon atoms with N; And X -Being counter anion, generally is halogen such as chlorine.
Its substitution value of cationic or amphoteric polysaccharide of hydrophobic group modification can change in very wide scope; CATION substitution value (DS C) can be 0.01～0.5, be suitably 0.02～0.3, preferred 0.025～0.2, hydrophobic substitution value (DS H) can be 0.01～0.5, be suitably 0.02～0.3, preferred 0.025～0.2, and anion substitution value (DS A) can be 0～0.2, be suitably 0～0.1, preferred 0～0.05.
The preparation of polysaccharide of the present invention is, adopt one or more reagent that contain cation group and/or hydrophobic grouping that polysaccharide is subjected to handle with CATION and hydrophobically modified by known method, such as passing through this reagent and the reaction of polysaccharide in the presence of alkaline matter such as alkali metal or alkaline earth metal hydroxide.Treat that the polysaccharide of handling with CATION and hydrophobically modified can be nonionic, anionic, both sexes or cationic.Suitable modifier comprises the succinyl oxide of nonionic agent such as hydrophobic replacement; Alkylene oxide such as propylene oxide and butylene oxide; Haloalkyl such as bromo decyl and bromododecane base; Halo aralkyl such as benzyl chloride and benzyl bromide a-bromotoluene; Chloropropylene oxide with have a product that comprises substituent two alkanamines of above-mentioned hydrophobic grouping at least, comprise 3-dialkylamino-1,2 epoxy prapane; And cationic agent such as chloropropylene oxide with have the product that a substituent tertiary amine that comprises above-mentioned hydrophobic grouping comprises three alkanamines, alkaryl two alkanamines such as dimethyl benzyl amine at least; Arylamine such as pyridine and quinoline.This suitable cationoid agent comprises 2,3-glycidyl trialkyl ammonium halide, halo hydroxypropyl trialkyl ammonium halide such as N-(3-chloro-2-hydroxypropyl)-N-(hydrophobic alkyl)-N, N-two (short-chain alkyl) ammonium chloride and N-glycidyl-N-(hydrophobic alkyl)-N, N-two (short-chain alkyl) ammonium chloride, wherein hydrophobic alkyl as above defines, particularly octyl group, decyl and dodecyl, short-chain alkyl then is methyl or ethyl; Halo hydroxypropyl-N, N-dialkyl group-N-alkaryl halogenation ammonium and N-glycidyl-N-(alkaryl)-N, N-dialkylammonium chloride such as N-(3-chloro-2-hydroxypropyl)-N-(alkaryl)-N, N-two (short-chain alkyl) ammonium chloride, wherein alkaryl and short-chain alkyl as above define, N-(3-chloro-2-hydroxypropyl)-N-benzyl-N particularly, the N-alkyl dimethyl ammonium chloride; And N-(3-chloro-2-hydroxypropyl)-pyridinium chloride.When adopting the non-ionic hydrophobic agent, generally suit before or after hydrophobically modified is handled, to give polysaccharide with cationic by any cationic agent that adopts prior art.The suitable example of cationization and/or hydrophobically modified agent, polysaccharide of hydrophobic grouping modification and preparation method thereof be referring to U.S.No.4, and 687,519 and 5,463,127; WO 94/24169, and EP 189935; S.P.Patel, R.G.Patel and V.S.Patel, Starch/Starke, 41 (1989), No.5, pp.192-196 quotes in this reference with regard to its content.
In a preferred embodiment, polysaccharide of the present invention and at least a additional paper stock additive are used, especially in order further to improve row's filter and/or to keep effect, therefore just formed and a kind ofly include row's filter of two or more components and keep auxiliary agent, be commonly referred to as and help filter/retention agent.Here used " helping filter/retention agent " speech refers to two or more components (auxiliary agent, reagent or additive), in adding paper stock to after, compare with the situation of not adding these components, more can improve row filter and/or keep effect.The suitable example of such paper stock additive comprises anionic microparticle material such as anionic organic filler and anionic inorganic particulate, water soluble anion type vinyl addition polymer, low molecular weight cationic type organic polymer, aluminium compound and composition thereof.The present embodiment preferably on the one hand, polysaccharide and anionic microparticle material particularly anionic inorganic particulate are used.The present embodiment another preferred aspect, polysaccharide and anionic inorganic particulate and low molecular weight cationic type organic polymer are used.The present embodiment more on the other hand, polysaccharide and anionic inorganic particulate and aluminium compound are used.Anionic microparticle material of the present invention can be selected from inorganic and organic filler.
In the present invention can with the anionic inorganic particulate comprise silica-based particle of anionic and smectite-type clay.The preferred anionic inorganic particulate of its particle diameter in the colloidal state scope.The preferred silica-based particle of anionic that adopts is promptly based on SiO 2Or the particle of silicic acid, and this class particle generally all is the form supply with aqueous colloidal dispersion, promptly so-called colloidal sol.The suitable example of silica-based particle comprises colloidal silica and various types of poly-silicic acid.Ludox also can be sentenced modification and contain other composition such as aluminium and/or boron, and they can exist in water and/or silica-based particle.This suitable eka-silicon basal granule comprises the colloidal silica and the alumina silicate of aluminium modification.Also can adopt the mixture of the suitable silica-based particle of this class.What comprise the suitable silica-based particle of anionic helps filter/retention agent referring to U.S.No.4, and 388,150; 4,927,498; 4,954,220; 4,961,825; 4,980,025; 5,127,994; 5,176,891; 5,368,833; 5,447,604; 5,470,435; 5,543,014; 5,571,494; 5,573,674; 5,584,966; 5,603,805; 5,688,482 and 5,707,493, quote in this reference with regard to it.
Its average grain diameter of the silica-based particle of anionic is suitable to about 50nm, preferably less than about 20nm 1～about 10nm more preferably from about also.Know all in the chemistry of silicones that particle diameter refers to the average-size of primary particle, it may be to assemble or non-state of aggregation.The specific area of silica-based particle is suitable to 50m 2/ g also is preferably greater than 100m 2/ g.Specific area can be up to about 1700m 2/ g and preferred the highest 1000m 2/ g.Specific area generally can record through the NaOH titration by known method, such as the analytical chemistry (Analytical Chemistry) 28 (1956): 12 referring to Sears, 1981-1983 and U.S.No.5,176,891.The area of gained is promptly represented the specific area mean value of particle.
In embodiment preferred of the present invention, the anionic inorganic particulate is specific area 50～1000m 2/ g, preferred 100～950m 2The silica-based particle of/g.The sub-colloidal sol of this eka-silicon basal granule also comprises the colloidal sol of modification, such as the silica-based colloidal sol of silica-based colloidal sol that contains aluminium and boracic.Silica-based particle preferably is in S value 8～45%, preferred 10～30% the colloidal sol, contains specific area 300～1000m 2/ g, suitable 500～950m 2/ g and preferred 750～950m 2The silica-based particle of/g, its colloidal sol can be by above-mentioned through aluminium and/or boron modification.Such as, particle can be through the silicon atom substitution value of aluminium surface modification to 2～25%.The S value can be by Iler ﹠amp; Dalton is in J.Phys.Chem.60 (1956), and the described method of 955-957 is measured and calculated.Degree that the S value representation is assembled or microgel forms and S value are low to show that aggregation extent is higher.
In another one embodiment preferred of the present invention, silica-based particle is selected from the modified polysilicate of poly-silicic acid and high-specific surface area, and is suitable to about 1000m 2/ g.The specific area scope is 1000～1700m 2/ g and preferred 1050～1600m 2/ g.The colloidal sol of modified polysilicate can contain other composition, and such as aluminium and/or boron, they can exist in water and/or silica-based particle.In the prior art, poly-silicic acid also refers to poly silicic acid, poly-silicic acid microgel, polysilicate and polysilicate microgels, and all these are included among used here poly-silicic acid one speech.Such aluminum contained compound generally also refers to poly-aluminosilicate and poly-dehydrated form, and all these are included among the colloidal silica and alumina silicate two speech of used here aluminium modification.
In technology of the present invention can with smectite-type clay be well known in the prior art, comprise natural product, synthetic and through chemically treated material.The suitable example of smectite-type clay comprises that imvite/bentonite, hectorite, beidellite, skirt take off stone and talcum powder, the preferred bentonite and the preferred 400～800m of its surface area of back that particularly expands 2The bentonite of/g.Suitable clay can be referring to U.S.No.4, and 753,710; 5,071,512 and 5,607,552, quote in this reference with regard to it.
In the present invention can with the anionic inorganic particulate comprise highly cross-linked anionic vinyl addition polymer and comprise the anionic monomer such as the suitable copolymer of acrylic acid, methacrylic acid and sulfonation or phosphine vinyl add-on type monomer that general and nonionic monomers is as copolymerization such as (methyl) acrylamide, (methyl) alkyl acrylate.Useful anion organic filler also comprises anionic condensation polymers such as melamine-sulfonic acid colloidal sol.
The cationic organic polymer of low molecular weight (hereinafter referred to as LMW) that can use in the present invention comprises that general indication also is used as a class of anion refuse agent for capturing (ATC).Known ATC filters and/or keeps effect as the neutralization of harmful anion material contained in the paper stock and/or fixative and its with helping filter/retention agent to be used generally further to improve to arrange in the prior art.The cationic organic polymer of LMW can be from natural or route of synthesis, and preferably a kind of synthetic LMW polymer.Cationic organic polymer of LMW that this suitable class organic polymer comprises high electric charge such as polyamine, polyamide-based amine, polyethylene imine based, based on the equal and copolymer of diallyldimethylammonium chloride, (methyl) acrylamide and (methyl) acrylate.The molecular weight of the cationic organic polymer of LMW is suitably at least 2,000 and preferably at least 10,000.The upper limit of molecular weight generally is about 700,000, is suitably about 500,000 and preferred about 200,000.
In the present invention can with aluminium compound comprise the many aluminium of many aluminium compounds, silicic acid-sulfuric acid of bright rock, aluminate, aluminium chloride, aluminum nitrate and many aluminium compounds such as the many aluminium of chlorination, the many aluminium of sulfuric acid, chloride and sulfate ion, and composition thereof.Many aluminium compounds also can contain other ion beyond the chlorion, such as the anion from sulfuric acid, phosphoric acid, organic acid such as citric acid and oxalic acid.
Each component of filter/retention agent that helps of the present invention can add in the paper stock by usual method and with any order.When adopting the anionic microparticle material, preferably before adding microparticle material, the cationic or amphoteric polysaccharide of hydrophobic replacement is added in the paper stock, though opposite interpolation order is also feasible.Further preferably before the shear treatment that is selected from pumping, mixing, refining etc., add polysaccharide, and after this shear treatment, add the anionic particle.When adopting cationic organic polymer of LMW and/or aluminium compound, this class component preferably introducing polysaccharide and anionic microparticle material, if adopt, is incorporated in the paper stock before.Another kind may be, cationic organic polymer of LMW and polysaccharide can be incorporated in the paper stock respectively or in the mode of mixing basically simultaneously, such as referring to U.S.No.5,858,174, here with regard to it with reference to quoting.
In paper stock to be drained off, add dry strength agent of the present invention and help filter/retention agent, its consumption can change in very wide scope, depend on, especially the moment of the type of the content of the kind of the kind of component and number, batching, filler, filler, interpolation and salt content etc.The addition of component generally will guarantee, compares with the situation of not adding these components, more can improve dry strength and/or row's filter of paper and/or keep effect.Cationic or the amphoteric polysaccharide of hydrophobic replacement usually its addition is at least 0.01%, generally is at least 0.1wt.%, and based on the paper stock material of doing, and the upper limit is generally 10% and be suitably 2wt.%.When adopting the anionic microparticle material, its addition is at least 0.001wt.% usually, generally is at least 0.005wt.%, and based on the paper stock of doing, and the upper limit is generally 1.0% also suitable 0.6wt.%.When adopting the silica-based particle of anionic, total addition is suitably 0.005～0.5wt.%, with SiO 2Calculate and based on the paper stock material of doing, preferred 0.01～0.2wt.%.If adopted the cationic organic polymer of LMW in the technology, its addition is at least 0.05%, based on paper stock dry to be drained off.The scope of suitable consumption is 0.07～0.5%, preferred 0.1～0.35%.If adopted aluminium compound in the technology, total introducing amount depends on the type of used aluminium compound and wishes other effect that it can play in paper stock to be drained off.Such as the known precipitating agent that utilizes aluminium compound as the abietyl sizing agent in the prior art.Total addition generally is at least 0.05%, with Al 2O 3Calculate and based on the paper stock material of doing.The scope of suitable consumption is 0.5～3.0%, preferred 0.1～2.0%.
Optimal process of the present invention is used for making paper from containing the high suspended substance of optional filler of cellulose fiber peacekeeping and electrical conductivity.Usually, be at least 0.75mS/cm, suitable 2.0mS/cm at least, preferably 3.5mS/cm at least in its electrical conductivity of paper stock of online dehydration.Surpass 5.0mS/cm and even can both obtain extraordinary row's filter and keep effect when surpassing 7.5mS/cm at conductivity value.Electrical conductivity can be measured by standard device such as Christan Berner system WTW LF539 type device.Suitable to measuring in paper machine head box charging or be in the electrical conductivity of cellulosic suspension wherein, or the electrical conductivity of the plain boiled water that obtains through the suspended substance dehydration of optional mensuration, and obtain the above-mentioned numerical value of mentioning.The conductivity value height shows salt (electrolyte) content height, and wherein various salt may be from one, two and polyvalent cation, such as alkali metal such as Na +And K +, alkaline-earth metal such as Ca 2+And Mg 2+, aluminium ion such as Al 3+, Al (OH) 2+With many aluminium ions, and one, two and multivalent anions such as halogen such as Cl -, sulfate radical such as SO 4 2-And HSO 4 -, carbonate such as CO 3 2-And HCO 3 -, silicate and rudimentary organic acid.The present invention be specially adapted to from two and the high paper stock of polyvalent cation salt content make paper, and cations generally is at least 200ppm, suitable 300ppm at least and preferred 400ppm at least.Salt can be derived from order to form the cellulose fiber peacekeeping filler of paper stock, and particularly in integrating mill, wherein the concentrated attitude fiber water suspended substance from the paper pulp mill generally mixes the rare suspended substance that is suitable for paper mill papermaking with formation with water.Salt also may be from the various additives of introducing in paper stock, from the fresh water of being supplied in the technology or have a mind to add etc.And its salt content is all higher usually in the technology of plain boiled water degree of depth circulation, and this can cause salt accumulation in a large number in the recirculated water of technology.
The present invention further comprises the paper technology of plain boiled water degree of depth circulation (recovery), be the situation of plain boiled water height sealing, use 0～30 ton of fresh water such as made dried paper per ton wherein, paper per ton generally is less than 20, suitable be less than 15, preferably be less than 10 and particularly be less than 5 tons of fresh waters.Its cyclic process of the plain boiled water that obtains in the technology is suitable to be comprised, and plain boiled water mixes with cellulose fibre and/or optional filler to form suspended substance to be drained off; Preferably comprise, plain boiled water mixes with the suspended substance that contains the optional filler of cellulose fiber peacekeeping before suspended substance enters the forming web dehydration.The mixed process of plain boiled water and suspended substance can be before the introducing that helps filter/retention agent, with its simultaneously or afterwards, if adopt; With before the introducing of polysaccharide, with its simultaneously or afterwards.Fresh water can be introduced under any stage in the technology; Such as can paper stock with before or after plain boiled water mixes and component help filter/retention agent introduce before, with its simultaneously or afterwards, if adopt; And before polysaccharide is introduced, with its simultaneously or mix with cellulose fibre afterwards with the formation suspended substance, perhaps mix with the suspended substance that contains cellulose fibre, dilute it to form suspended substance to be drained off.
Other additive commonly used in the paper industry certainly uses with additive collocation of the present invention, such as other dry strength agent, and wet strength agent, based on the sizing agent of rosin, ketene dimer and acid anhydrides etc., optional glazing agent, dyestuff etc.Cellulosic suspension or paper stock also can contain inorganic filler such as kaolin, potter's clay, titanium dioxide, gypsum, talcum and natural and synthetic calcium carbonate such as chalk, marble powder and the precipitation method calcium carbonate of common type.
Technology of the present invention is used for papermaking.Here used " paper " speech not only comprises paper and goods thereof certainly, also comprises other sheet or mesh products such as plate and cardboard and goods thereof.This technology can be used for making paper from the suspended substance of dissimilar cellulose fibers, and suspended substance should contain 25wt.% and preferred this fibrid of 50wt.% at least at least aptly, based on the material of doing.Suspended substance can be based on the fiber from chemical pulp such as sulfuric acid, sulfite cellulose and organosol paper pulp, mechanics paper pulp such as thermodynamics paper pulp, chemical thermodynamics paper pulp, refiner paper pulp and ground wood pulp, hardwood and cork all can, also can be based on the fiber that reclaims, optional from de inked pulp, and composition thereof.The present invention is specially adapted to from being that the suspended substance of base is made paper with the paper pulp that contains recycled fiber and de inked pulp, and the content of this type of cellulose fibre reaches as high as 100%, is suitably 20～100%.
The present invention is further described in following embodiment, but it is not construed as limiting.Umber and % represent parts by weight and wt.% respectively, except as otherwise noted.
Embodiment 1
Prepare the cationization polysaccharide by the reaction of EP 189 935 described general steps by natural potato starch and quaternizing agent.Quaternizing agent is such as can or pressing U.S.No.5 available from Degussa, and 463,127 described general steps are prepared.Starch dissolution is in water and with its aqueous solution of 0.5%.
Polysaccharide of the present invention, P1-P3 and polysaccharide in order to compare, contrast 1 and contrast 2, be prepared from following initial substance: P1: natural potato starch is through the quaternized cationic starch that obtains to 0.8%N of 3-chloro-2-hydroxypropyl dimethyl benzyl ammonium chloride.P2: natural potato starch is through the quaternized cationic starch that obtains to 1.3%N of 3-chloro-2-hydroxypropyl dimethyl benzyl ammonium chloride.P3: natural potato starch is through the quaternized cationic starch that obtains to 0.9%N of 3-chloro-2-hydroxypropyl dimethyl octyl group ammonium chloride.Contrast 1: natural potato starch is through the quaternized cationic starch that obtains to 0.8%N of 3-chloro-2-hydroxypropyl-trimethyl ammonium chloride.Contrast 2: natural potato starch is through 2, the quaternized cationic starch that obtains to 1.3%N of 3-epoxypropyl trimethylammonium chloride ammonium.
Embodiment 2
With the Akribi of Sweden braking attitude row's filter analyzer (DDA) assessment row filter effect, be determined at pull out stopper and in the paper stock position when an opposite side imposes vacuum to net through the net row filter required time of a certain amount of paper stock.Measuring the filtrate that obtains from paper stock row filter with nephelometer is the turbidity of plain boiled water, evaluates the effect of keeping of first pass.
Used batching is based on the potter's clay of the TMP/SGW paper pulp (80/20) of the peroxide bleaching of 56wt.%, the birch that is refined to 200 ℃ of SF of 14wt.%/pine sulfuric acid bleached pulp (60/40) and 30wt.%.Colloidal state level part of the bleaching liquid that interpolation 40g/l comes from the SC mill in paper stock with 5 μ m sieve filtration and concentrated through the UF filter, is exceeded with 200,000.Stock volume 800ml and the pH value is 7.In paper stock, add calcium chloride, conductivity adjustment is arrived 5.0mS/cm (tested number 1-3) and 7.5mS/cm (tested number 4-6).
All stir paper stock with the speed of 1500rpm in lattice are board-like jar in the entire test and carry out chemistry in the following order and add: i) the interpolation polysaccharide stirs 30s then in paper stock, ii) in paper stock, add the anionic inorganic material and stir 15s then, iii) arrange automatic simultaneously record row's filter time of filter paper material.
Used polysaccharide is P1 and the contrast 1 of embodiment 1 in this test series.Used anionic inorganic particulate is U.S.No.5, the silica-based particle of 368,833 disclosed types.The S value of colloidal sol is about 25% and contain specific area and be about 900m 2/ g and with the silicon dioxide granule of aluminium surface modification 5%.
The cationic starch of table 1 expression different amounts calculates and silica-based particle with the dried starch that accounts for dried paper stock system, with SiO 2Calculate and based on the paper stock system of doing its dehydration and keep effect.
Table 1
Tested number Starch consumption [kg/t] SiO 2Consumption [kg/t] Dewatering time [s] Turbidity [NTU]
P1 Contrast 1 P1 Contrast 1
1 2 3 7.5 10 15 3 3 3 17.0 16.0 15.0 20.6 20.0 21.0 51 54 48 61 54 52
4 5 6 7.5 10 15 1.5 1.5 1.5 18.1 16.6 15.5 22.3 22.1 24.0 53 55 50 64 60 58
Embodiment 3
In this test series, according to embodiment 2 described step evaluation dehydrating effects.
Used identical of batching and embodiment 2.Stock volume 800ml and the pH value is about 7.In paper stock, add calcium chloride, electrical conductivity is adjusted to 1.5mS/cm (tested number 1-3); (3.5mS/cm tested number 4-5); And 5.0mS/cm (tested number 6-7).
Used polysaccharide is P2 and the contrast 2 of embodiment 1 in this test series.The anionic inorganic particulate of embodiment 2 adopts in this test series equally.
Table 2 expression different amounts help filter/retention agent, to account for the dried starch and the SiO of dried paper stock system 2Be meter, its dehydrating effect.
Table 2
Tested number Starch consumption [kg/t] SiO 2Consumption [kg/t] Dewatering time [s]
P2 Contrast 2
1 2 3 4 5 6 7 0 5 10 5 10 5 10 0 3 3 3 3 3 3 22.5 16.3 10.3 11.6 9.9 13.1 10.8 22.5 18.0 10.7 13.4 10.4 17.9 15.0
Embodiment 4
In this test series,, also comprise a kind of low-molecular-weight cationic polyamine except helping filter/retention agent according to embodiment 2 described step evaluation dehydrating effects; ATC.In paper stock, add polyamine, stir 30s then, then add the cationization polysaccharide and also follow by the anionic inorganic particulate.
Used batching is based on the TMP/SGW paper pulp (80/20) of the peroxide bleaching of 70% de inked pulp, 15wt.% and the birch that is refined to 200 ℃ of SF/pine sulfuric acid bleached pulp (60/40) of 15wt.%.Stock volume 800ml and the pH value is about 7.In paper stock, add calcium chloride, electrical conductivity is adjusted to 1.0mS/cm (tested number 1); (2.0mS/cm tested number 2); (4.0mS/cm tested number 3-4); And 7.5mS/cm (tested number 5).
Used polysaccharide is P1, P2, the contrast 1 of embodiment 1 and contrasts 2 in this test series.The anionic inorganic particulate of embodiment 2 adopts equally.
Table 3 expression different amounts help filter/retention agent, to account for dry measure polyamine, starch and the SiO of dried paper stock system 2Be meter, its dehydrating effect.
Table 3
Tested number ATC consumption [kg/t] Starch consumption [kg/t] SiO 2Consumption [kg/t] Dewatering time [s]
P1 P3 Contrast 1 Contrast 2
1 2 3 4 5 3 3 3 3 3 2.5 2.5 2.5 5 7.5 3 3 3 3 3 12.1 12.3 13.3 11.6 - 12.9 13.9 12.8 13.8 13.2 13 14.5 13 - - - - - 16
Embodiment 5
Become the Lorentzen ﹠amp of paper machine (Formette Dynamique) and Sweden with the Fibertech AB braking attitude of Sweden; Wettre system tensile strength tester evaluation dry strength performance.According to embodiment 4 described step evaluation dehydrating effects.
Adopt the batching of embodiment 2.The paper stock denseness is 0.3%.Adjust the electrical conductivity of paper stock by adding calcium chloride.Adopt the additive of embodiment 4 in this test series and add order.The addition of polyamine is 3kg/t, in the dried polyamine that accounts for dried paper stock system is.The addition of silica-based particle is 3kg/t, with SiO 2For meter and based on the paper stock system of doing.
In the paper stock of blending bin, add chemicals, via horizontal nozzle with stuff pump deliver in the rotary drum on the moisture film that is positioned at the net top, row's filter paper material forms paper, compress and drying, so just can mold paper on dynamic flaker.Paper is cut into inch strips and on the tensile strength tester, test.Calculate paper in the r.m.s. of the tensile strength coefficient of machine direction and horizontal direction and compare.
The starch consumption that table 4 expression is different is the dewatering time of resulting paper and tensile strength in the dried starch that accounts for dried paper stock system.
Table 4
Tested number Electrical conductivity [mS/cm] Starch consumption [kg/t] Dewatering time [s] Tensile strength [kNm/kg]
P2 Contrast 2 P2 Contrast 2
1 2 3 4 2.5 5.0 10.0 10.0 5.0 5.0 5.0 10.0 7.9 8.6 11.1 13.3 8.4 11.3 13.0 15.1 36.0 36.1 35.3 36.5 35.2 35.8 35.0 34.0

Claims (20)

1. technology of making paper from the suspended substance that contains the non-essential filler of cellulose fiber peacekeeping, comprise and in suspended substance, add the filter/retention agent that helps that comprises cationic or amphoteric polysaccharide, suspended substance moulding on the net and dehydration, it is characterized in that polysaccharide has a hydrophobic grouping that comprises an aromatic group, its electrical conductivity of Tuo Shui suspended substance is at least 0.75mS/cm on the net.
2. technology of making paper from the suspended substance that contains the non-essential filler of cellulose fiber peacekeeping, comprise in suspended substance, to add and comprise helping filter/retention agent and being selected from anionic microparticle material, water soluble anion type vinyl addition polymer and their mixture of cationic or amphoteric polysaccharide, suspension moulding on the net and dehydration is characterized in that polysaccharide has a hydrophobic grouping or a polysaccharide that comprises an aromatic group following general structure (I) is arranged:
Figure C9980553200021
Wherein P is the residue of polysaccharide; A is the group that makes N and polysaccharide residue radical bonding; R 1And R 2Each is the alkyl of H or 1-3 carbon atom naturally; R 3It is the hydrophobic grouping that contains 2 carbon atoms at least; N is about 2-300,000 integer, and perhaps another kind may be, R 1, R 2And R 3Form an aromatic group that contains 5-12 carbon atom with N; With X-be counter anion, its electrical conductivity of Tuo Shui suspended substance is at least 0.75mS/cm on the net.
3. the technology of claim 2 is characterized in that hydrophobic grouping comprises an aromatic group.
4. claim 1,2 or 3 technology is characterized in that hydrophobic grouping is a benzyl.
5. the technology of claim 2 is characterized in that hydrophobic grouping comprises an alkyl.
6. the technology of claim 5 is characterized in that hydrophobic grouping is butyl, amyl group, hexyl, octyl group or decyl.
7. any one technology of aforementioned claim is characterized in that hydrophobic grouping contains 4～14 carbon atoms.
8. any one technology of aforementioned claim is characterized in that hydrophobic grouping contains 6～12 carbon atoms.
9. any one technology of aforementioned claim is characterized in that polysaccharide is selected from starch and guar gum.
10. any one technology of aforementioned claim is characterized in that polysaccharide contains one or more anionic groups.
11. the technology that aforementioned claim is any one, the addition that it is characterized in that polysaccharide are 0.1wt% at least, based on the paper stock material of doing.
12. the technology that aforementioned claim is any one is characterized in that helping filter/retention agent further to comprise the anionic microparticle material.
13. the technology of claim 12 is characterized in that the anionic microparticle material is selected from silica-based particle or bentonite.
14. the technology of claim 12 or 13 is characterized in that the anionic microparticle material is selected from specific area greater than 50m 2The silica-based particle of/g.
15. the technology that aforementioned claim is any one is characterized in that helping filter/retention agent further to comprise low-molecular-weight cationic organic polymer.
16. the technology that aforementioned claim is any one is characterized in that suspended substance comprises the cellulose fibre of recovery.
17. the technology that aforementioned claim is any one is characterized in that suspended substance comprises the paper pulp of deinking.
18. the technology that claim is any one is characterized in that its electrical conductivity of suspended substance of dewatering is at least 2.0mS/cm on the net.
19. the technology of claim 18 is characterized in that its electrical conductivity of suspended substance of dewatering is at least 3.5mS/cm on the net.
20. the technology that aforementioned claim is any one, it is characterized in that technology further is included in makes suspended substance dehydration to obtain wet web and plain boiled water on the net, circulation plain boiled water and optional introducing fresh water contain the suspended substance to be drained off of the optional filler of cellulose fiber peacekeeping with formation, and wherein the introducing amount of fresh water is that made dried paper low per ton is in 30 tons.
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Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100403838B1 (en) * 1998-04-27 2003-11-01 악조 노벨 엔.브이. A process for the production of paper
US6417268B1 (en) 1999-12-06 2002-07-09 Hercules Incorporated Method for making hydrophobically associative polymers, methods of use and compositions
US6918995B2 (en) 2000-08-07 2005-07-19 Akzo Nobel N.V. Process for the production of paper
WO2002012622A1 (en) † 2000-08-07 2002-02-14 Akzo Nobel N.V. Process for sizing paper
GB0019415D0 (en) * 2000-08-09 2000-09-27 Ciba Spec Chem Water Treat Ltd Noval monomers, polymers thereof and the use of the polymers
WO2002025013A1 (en) 2000-09-20 2002-03-28 Akzo Nobel N.V. A process for the production of paper
DE10113998A1 (en) * 2001-03-22 2002-09-26 Voith Paper Patent Gmbh Method for loading fibers contained in a fiber suspension with an auxiliary
US7156955B2 (en) * 2001-12-21 2007-01-02 Akzo Nobel N.V. Papermaking process using a specified NSF to silica-based particle ratio
PL215499B1 (en) 2001-12-21 2013-12-31 Akzo Nobel Nv Aqueous silica-containing composition and process for production of paper
CA2473638A1 (en) * 2002-01-31 2003-08-07 Akzo Nobel N.V. Process for manufacturing paper
EP1546455A1 (en) * 2002-10-01 2005-06-29 Akzo Nobel N.V. Cationised polysaccharide product
US20040084162A1 (en) 2002-11-06 2004-05-06 Shannon Thomas Gerard Low slough tissue products and method for making same
MXPA05005265A (en) * 2002-11-19 2005-07-25 Akzo Nobel Nv Cellulosic product and process for its production.
US7303654B2 (en) 2002-11-19 2007-12-04 Akzo Nobel N.V. Cellulosic product and process for its production
JP4179913B2 (en) * 2003-03-31 2008-11-12 ソマール株式会社 Paper manufacturing method
KR20050058785A (en) * 2003-12-12 2005-06-17 김재봉 Introduction and manufacturing method of bentonite involving dispersion polymer
CA2562127C (en) * 2004-04-07 2011-01-18 Akzo Nobel N.V. Silica-based sols and their production and use
GB0425101D0 (en) * 2004-11-15 2004-12-15 Ciba Spec Chem Water Treat Ltd Papermaking process
US7955473B2 (en) 2004-12-22 2011-06-07 Akzo Nobel N.V. Process for the production of paper
PL1834040T3 (en) * 2004-12-22 2015-07-31 Akzo Nobel Chemicals Int Bv A process for the production of paper
US20060254464A1 (en) 2005-05-16 2006-11-16 Akzo Nobel N.V. Process for the production of paper
US8273216B2 (en) 2005-12-30 2012-09-25 Akzo Nobel N.V. Process for the production of paper
KR101318317B1 (en) 2005-12-30 2013-10-15 아크조 노벨 엔.브이. A process for the production of paper
CA2581898A1 (en) * 2006-03-17 2007-09-17 Weyerhaeuser Company Method for making a low density multi-ply paperboard with high internal bond strength
EP1936032A1 (en) 2006-12-18 2008-06-25 Akzo Nobel N.V. Method of producing a paper product
EP2199462A1 (en) * 2008-12-18 2010-06-23 Coöperatie Avebe U.A. A process for making paper
WO2011113119A1 (en) * 2010-03-19 2011-09-22 Fibria Celulose S/A Process for the treatment of cellulose pulps, cellulose pulp thus obtained and use of biopolymer for treating cellulose pulps
EP2402503A1 (en) 2010-06-30 2012-01-04 Akzo Nobel Chemicals International B.V. Process for the production of a cellulosic product
CN102971462A (en) * 2010-07-12 2013-03-13 阿克佐诺贝尔化学国际公司 Cellulosic fibre composition
FI125713B (en) * 2010-10-01 2016-01-15 Upm Kymmene Corp A method for improving the runnability of a wet paper web and paper
RU2483151C1 (en) * 2011-11-10 2013-05-27 Российская Федерация, От Имени Которой Выступает Министерство Промышленности И Торговли Российской Федерации Method of manufacturing paper for printing
JP6243853B2 (en) * 2012-12-07 2017-12-06 日本曹達株式会社 Method for producing polymer
EP3059739A1 (en) 2015-02-20 2016-08-24 Wicor Holding AG Insulation element with low electrical conductivity for electrical isolation in the high voltage range
EP3288041A1 (en) 2016-08-23 2018-02-28 Wicor Holding AG Insulation element with chemical fibres for electrical insulation in the high voltage range
WO2018046794A1 (en) * 2016-09-07 2018-03-15 Kemira Oyj Method for manufacture of paper, board or the like and use of the composition
CN110088397B (en) * 2016-12-16 2021-12-21 凯米罗总公司 Polymer composition and use thereof
RU2754187C2 (en) * 2017-03-29 2021-08-30 Кемира Ойй Method for production of paper or cardboard
WO2019004950A1 (en) * 2017-06-30 2019-01-03 Scg Packaging Public Company Limited High-strength sheet material
RU2671752C1 (en) * 2017-12-14 2018-11-06 Общество с ограниченной ответственностью "ПАННА" Water-soluble paper with embroidery pattern and method for manufacture thereof
CN109594402A (en) * 2018-12-28 2019-04-09 江苏理文造纸有限公司 A method of kraft liner cardboard paper is prepared using wastewater sludge
CN109942721B (en) * 2019-03-20 2021-04-02 淮海工学院 Aqueous solution of hydroxymethyl urea modified cationic polysaccharide
AT525216A1 (en) * 2021-07-15 2023-01-15 Berndorf Band Gmbh Pressing device with a pressure roller

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4250269A (en) * 1979-11-26 1981-02-10 Buckman Laboratories, Inc. Water-soluble mixtures of quaternary ammonium polymers, nonionic and/or cationic vinyl-addition polymers, and nonionic and/or cationic surfactants
SE432951B (en) * 1980-05-28 1984-04-30 Eka Ab PAPER PRODUCT CONTAINING CELLULOSA FIBERS AND A BINDING SYSTEM CONTAINING COLOIDAL MILIC ACID AND COTIONIC STARCH AND PROCEDURE FOR PREPARING THE PAPER PRODUCT
FI81860C (en) * 1984-01-27 1990-12-10 Nalco Chemical Co NOW FOERFARANDE FOER LIMNING AV PAPPER.
US4687519A (en) * 1985-12-20 1987-08-18 National Starch And Chemical Corporation Paper size compositions
ES2053980T5 (en) * 1988-03-28 2000-12-16 Ciba Spec Chem Water Treat Ltd MANUFACTURE OF PAPER AND CARDBOARD.
US5098520A (en) * 1991-01-25 1992-03-24 Nalco Chemcial Company Papermaking process with improved retention and drainage
GB9313956D0 (en) * 1993-07-06 1993-08-18 Allied Colloids Ltd Production of paper
EP0707763B1 (en) * 1993-07-07 2001-08-29 Picturetel Corporation Reduction of background noise for speech enhancement
SE9502522D0 (en) * 1995-07-07 1995-07-07 Eka Nobel Ab A process for the production of paper
ID16844A (en) * 1996-05-01 1997-11-13 Nalco Chemical Co PAPER MAKING PROCESS

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AU4401599A (en) 1999-11-16
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CA2329027C (en) 2005-02-15
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EP1080271A1 (en) 2001-03-07
AU748735B2 (en) 2002-06-13
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