CN101925704A - Produce the method for paper - Google Patents
Produce the method for paper Download PDFInfo
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- CN101925704A CN101925704A CN2009801032897A CN200980103289A CN101925704A CN 101925704 A CN101925704 A CN 101925704A CN 2009801032897 A CN2009801032897 A CN 2009801032897A CN 200980103289 A CN200980103289 A CN 200980103289A CN 101925704 A CN101925704 A CN 101925704A
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- organic compounds
- compounds containing
- containing nitrogen
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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
- D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/07—Nitrogen-containing compounds
-
- 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
- D21H17/03—Non-macromolecular organic compounds
- D21H17/05—Non-macromolecular organic compounds containing elements other than carbon and hydrogen only
- D21H17/14—Carboxylic acids; 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
- 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
- D21H21/14—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 characterised by function or properties in or on the paper
- D21H21/30—Luminescent or fluorescent substances, e.g. for optical bleaching
Abstract
The present invention relates to a kind of method of producing paper by the suspension of cellulose fiber, comprising i) organic compounds containing nitrogen adds this suspension and/or by in the prepared paper of shaping of this cellulose suspension, this suspension dewatered on papermaking wire-cloth with formation paper separately and/or with the aqueous dispersion of ii) acid anhydrides and iii) at least a illuminating colour.
Description
The present invention relates to papermaking, relate more specifically to produce the method for paper, wherein aqueous dispersion and at least a illuminating colour with organic compounds containing nitrogen, acid anhydrides adds cellulose suspension.
Background technology
In paper technology, contain the optional filler of cellulose fiber peacekeeping and be called as slurry with the aqueous suspension of additive, its quilt infeeds slurry is ejected into head box on the forming net.Water removes from slurry by this forming net, so that forms the paper of a width of cloth width of cloth on this papermaking wire-cloth, and these paper webs are in the further dehydration and dry of drying section of paper machine.Resulting water is commonly referred to plain boiled water, contains tiny particle such as tiny fiber, filler and additive, recycles in paper-making process usually.When production comprises as the important paper of aesthetic feelings such as whiteness, brightness and/or printability, be designated hereinafter simply as higher gears paper or high-grade paper, the consumption of filler and additive and number increase to some extent with comparing than low quality paper usually.Performance chemicals is added in this suspension or the paper web, and with the runnability that improves paper machine and/or improve the quality, but they may influence function each other.
Usually higher gears paper needs the moist and liquid, aqueous infiltration of opposing to a certain extent as white thin paper.Therefore, usually sizing agent such as cellulose reactive sizing agent are added in cellulose suspension and/or the paper web.Comprise and be usually used in neutral to subalkaline slurry based on the sizing agent of ketene dimer and the cellulose reactive sizing agent of acid anhydrides.Acid anhydrides is usually used in the quick-setting paper-making process of requirement sizing agent.Solidify fast, promptly obtain the hydrophobic property of paper at a high speed, the grade of coated paper is normally needed.In addition, adopt the paper of acid anhydrides applying glue in printing process, to obtain better runnability, for example, compare with the paper of employing ketene dimer reagent applying glue and to have reduced in the printing machinery aggregation tendency of relevant derivative with reactive sizing agent.Yet, when acid anhydrides is used for paper-making process, wherein influencing the aesthetic properties of forming paper such as the performance chemicals of color and whiteness and be present in the suspension, the uneven distribution of dyestuff may occur in the finished paper, and this is regarded as color spot.
US 2003/0188393A1 relates to the method for using the brightness of illuminating colour control paper.
WO 2007/073321 relates to the aqueous dispersion of cellulose reactive sizing agent, the preparation method of dispersion and comprise the method that dispersion is added the production paper of suspension.
Yet when painted dyestuff is present in the cellulose suspension and acid anhydrides during as sizing agent, the irregular distribution of pigment (dyestuff) is considered as color spot by human eye, can be found in as white thin paper at blank sheet of paper.Color spot in the paper may appear in the initial production.Yet color spot is along with the time is tending towards increasing.Usually illuminating colour is added cellulose suspension to increase whiteness.Therefore, an object of the present invention is to reduce or eliminate the existence of color spot in the paper.Another purpose is the existence that reduces or eliminates color spot in the paper, and this paper is by comprising that the method that acid anhydrides is added the production paper of the cellulose suspension contain at least a illuminating colour makes.Another purpose is the irregular distribution that reduces or eliminates illuminating colour in the paper, and this paper is by comprising that the method that acid anhydrides is added the production paper of the cellulose suspension contain at least a illuminating colour makes.Further purpose will disclose below.
The present invention
The present invention relates to a kind of method of producing paper, can paper obtained by this method and the further purposes of the organic compounds containing nitrogen of definition of the present invention.
More particularly, the present invention relates to a kind of method of producing paper web by the aqueous suspension of cellulose fiber, comprising i) organic compounds containing nitrogen, ii) the aqueous dispersion of acid anhydrides and iii) at least a illuminating colour add this suspension and/or by in the prepared paper web of this suspension, this suspension are dewatered on papermaking wire-cloth to form paper.The invention further relates to organic compounds containing nitrogen in the method for producing paper by suspension as additive to improve the purposes of dye distribution in the paper, this organic compounds containing nitrogen is amine or its quaternary ammonium compound of molal weight less than about 180g/mol, and wherein this suspension comprises at least a illuminating colour.According to one embodiment of the invention, this organic compounds containing nitrogen is included in the aqueous dispersion that contains acid anhydrides.
The invention still further relates to the paper that can be made by method disclosed herein and comprise acid anhydrides and/or the paper of its derivative, organic compounds containing nitrogen and at least a illuminating colour, wherein this paper does not have the visible gathering of pigment.
When carrying out applying glue in the cellulose suspension that the organic compounds containing nitrogen adding is comprised at least a illuminating colour and by the aqueous dispersion that adds acid anhydrides, illuminating colour is considered to distribute more equably in paper.
The acid anhydrides applying glue that has been found that the cellulose suspension that contains illuminating colour that is used for papermaking has caused the paper that contains the pigment gathering, and this pigment is assembled causes the visible color spot of formation, is generally light blue.Beat all is that the interpolation of organic compounds containing nitrogen has hindered dyestuff gathering in the shaping paper.The more important thing is that by the interpolation of organic compounds containing nitrogen, the gathering of Chinese white also reduces.
Here used paper is meant the paper that is used to print, and uses paper as paper in the office, drawing, abbreviates printing paper usually as.Generally, this paper is white, and still, term " paper " can comprise the Colored Paper of any kind of.Yet the present invention advantageously is used to produce blank sheet of paper, comprises white printing paper.According to an embodiment, this paper, suitable is blank sheet of paper, has about at the most 350g/m
2Grammes per square metre.According to an embodiment, term " paper " does not comprise sheet material and cardboard.Yet paper according to the present invention can be used as the top layer of sheet material and cardboard.
Whiteness is an index of paper constructed in accordance, and cellulose fibre is commonly called slurry, and it should preferably have less than about 8 (ISO 302), less than about 4, less than about 3 or less than about 2 κ (kappa value).Cellulose fibre can be made by any pulping process, as long as these fibers can be used for producing paper.Pulping process comprises machinery, heat, semi-mechanization, half chemistry and chemical pulping method.The common chemical method is sulphite process and sulfate process, and the latter is also referred to as the sulfate pulping method.By the cellulose fibre that the chemical pulping method makes, the fiber that suitable words are made by the sulfate pulping method is preferred.Cellulose fibre is also bleached usually with the reduction content of lignin, and realizes the high brightness of fiber.In order to obtain to have the cellulose fibre of high brightness and low content of lignin, the crude fibre material stands chemistry (sulfate process) pulping process and bleaching subsequently usually.Bleaching process generally includes several bleachings operations of the stage of being washed and alkaline extraction interruption.The bleached chemical preparation comprises, chlorine dioxide for example, peroxide such as hydrogen peroxide, oxygen, ozone and Peracetic acid.Preferred cellulose fibre is the chemical delignification fiber that uses element-free chlorine (ECF) bleaching process subsequently or bleach completely without chlorine (TCF) bleaching process.
According to an embodiment, the brightness that is used for cellulose fibre of the present invention is about more than 83 (ISO3688), and is about more than 88 or about more than 90.Cellulose fibre can have κ (kappa value) and the about brightness more than 88 less than about 4.
The fibrous raw material that is used for above-mentioned pulping process can include, but are not limited to timber such as hardwood, cork, crop residues such as straw (straw), annual plant (hemp, jute, bluish dogbane, bamboo etc.), the deinking fiber of recovery or secondary stock and any kind.
In order further to improve the quality of paper, for example whiteness, brightness can add some non-fibre compositions in the paper web of cellulose suspension and/or dehydration.Cellulose suspension and finished paper can comprise mineral filler, kaolin for example, china clay, titanium dioxide, gypsum, talcum, calcium carbonate such as chalk, marble powder and precipitation carbonate.According to an embodiment, it is mineral filler more than about 5 weight % that cellulose suspension comprises based on dry cellulosic suspended matter and optional filler, more than for example about 10 weight %.
According to the present invention, at least a illuminating colour is present in the fibrous suspension.Illuminating colour is the compound that further improves the whiteness of paper.Whiteness is that human eye perceives is the degree of those colors of white.In physical term, if shine that all visible lights (to human eye) on the object are reflected and without any loss of strength, then this object is perceived as white.Visible light is meant the part of the electromagnetic spectrum that can arrive by human eye detection.The light of the full spectrum of object and compound reflection is seldom arranged and do not absorb the both visible electromagnetic radiation of some wavelength.Cloud and the most of light of the reflection of newly snowing also have some pigment, and especially titanium dioxide has such characteristic.Yet object absorbs some light usually, and normally the light in spectrum Smalt zone is rendered as faint yellow outward appearance.In order to improve the whiteness of paper, for example reduce yellow, can add illuminating colour in process of production.Fluorescent whitening agent (FWA) comprises that Optical Bleaching Agent (OBA) also can add cellulose suspension, with the brightness of special raising paper.OBA and FWA are by the fluorescence molecule of additive color mixed method with the brightness of raising paper, because they emit light that major part absorbs.On the other hand, illuminating colour normally mixes the compound that increases whiteness by losing lustre.
The illuminating colour that the present invention uses is the one group of compound looking whiteness (perceived whiteness) that improves paper, but does not comprise brightening agent, i.e. the compound of emitted radiation (fluorescent chemicals).
Illuminating colour can be selected from natural and synthesizing inorganic compound and anthropogenics.Preferred one group of chemicals are anthropogenicses.Suitably, the structure of this anthropogenics comprises the conjugated double bond system.The free oscillation more or less of described conjugated double bond.Generally, this anthropogenics comprises one or more identical or different chromophories (electron withdraw group), as vinyl, ketone group, thioketones base, azo group and carbon-nitrogen groups.
The compound that improves the whiteness of paper can be selected from azo dyes, anthraquinone dye, indigoid dye, polymethin dyes, aryl-carbon
Dyestuff, phthalocyanine dye and nitro dye.
The compound that contains azo group comprises the A-N=N-D group usually, wherein A and D aryl normally.The A-N=N-D group can be the part of ring system, hydrazone class for example, and the compound that perhaps contains azo group can form metal complex.The compound that contains azo group can contain four azo groups at the most.
The anthropogenics that comprises ketone group comprises the compound that contains anthraquinonyl, as 9, and the 10-benzoquinones.9, the 10-benzoquinones is at 1 to 4 and 5 to 8 free position, especially 1,4,5 and 8 can be by electron donating group-substituted.
The indigo based compound comprises-the CO-CX=CY-CO-construction unit, and wherein X, Y are selected from O, S, Se or NH.The example of indigo based compound is the indigo compound of indigo (1) and replacement.
The polymethine compound comprises general structure (2).The polymethine compound can be cationic, neutral or anionic, depends on the character of group A and B.
[A＝CR-(X＝Y)
x-B]
z (2)
Wherein X and Y can be C or N independently, and x is an integer, z is+n, 0 or-n (n is an integer).Wherein X and Y the two all be that the CATION polymethine examples for compounds of carbon atom is cyanine class (C.I. alkali red 1:1 2) and half cyanine class (C.I. alkaline purple 7).Wherein X and Y are that the polymethine examples for compounds of the combination of nitrogen or nitrogen and carbon is dinitrogen diaze hemicyanine class (a C.I. alkali blue 41), azepine carbocyanine class (C.I. basic yellow 11) and diaza carbocyanine class (C.I. Basic Yellow 28).Neutral polymethine compound can list merocyanine (meroxyanine), and anion polymethine compound can list oxonols (oxonol).
Aryl-carbon
Compound comprises the one group of compound that contains general structure (3):
Wherein m and n are 0 or 1, and X is C or N, and Y is O, S or NR, and A and B are O, S or NR independently, and R is an alkyl or aryl.
Other compound that improves the whiteness of paper can comprise phthalocyanine compound and contain nitro compound.The latter generally includes two or more aromatic rings, normally phenyl ring or naphthalene nucleus, and described aromatic ring comprises at least one nitro and electron donating group such as NH
2Or OH.
Illuminating colour is the dyestuff that absorbs the light (electromagnetic radiation) in the visible spectrum, and it is except reflected radiation, not obvious emission electromagnetic radiation or do not launch electromagnetic radiation.Thereby illuminating colour does not increase the reflected radiation of object in limit of visible spectrum, and promptly they can emitted radiation (light), perhaps their not obvious emitted radiations.Therefore, illuminating colour can be called as the dyestuff of losing lustre.Illuminating colour (dyestuff of losing lustre) absorbs the light in the complementary wavelength zone of causing yellow wavelength region may.Illuminating colour can be defined as the non-fluorescent chemicals (dyestuff) of looking whiteness that absorbs the radiation in the visible spectrum and increase paper in this way.Illuminating colour absorbs the light (about 380-495nm) of visible spectrum blue region and/or the light (about 590-750nm) in the orange red light of visible spectrum zone usually.Illuminating colour can refer to comprise the organic molecule of conjugated system, and promptly conjugated organic molecule absorbs the electromagnetic radiation in the visible spectrum, promptly about 380-750nm, preferably about 380-500nm and/or about 580-750nm.Here used conjugated system is meant the delocalization of the p orbital electron that is arranged in parallel adjacent in the atom.
Preferred one group of dyestuff is by name
Dyestuff.Preferred another group illuminating colour is phthalocyanine compound (organic compound that contains the phthalocyanine structure part), include but not limited to the phthalocyanine metal compound, randomly comprise solubilizing group, as the sulfonic acid functional group, the salt of phthalocyanine-sulfonic acid for example is as the sodium salt or the ammonium salt of CuPc.Phthalocyanine-like compound can also comprise the organic amine salt of sulfonic acid.The center of phthalocyanine-like compound can coordination hydrogen and/or metal cation.Coordination metal cation commonly used is copper and cobalt.Other phthalocyanine dye comprises the derivative of phthalocyanine metal compound and organic amine compound.Yet preferably other dyestuff kind is a triphen two
The piperazine class is commonly referred to two
The piperazine class.Preferred two
The piperazine class comprises triphen two
The dihalide of piperazine is as 9,10-dichloro triphen two
Piperazine and comprise acetamido or benzamido, ethyoxyl, halogen atom or HNCOCH
3The triphen two of group
The piperazine class.Preferred illuminating colour also is selected from two
Piperazine and the organic compound that contains the phthalocyanine structure part.
The example of illuminating colour be from
Dyestuff and from
Dyestuff includes but not limited to
: Orange GG, Orange S-RL, Red R30, Red BL, Red F5RK, Bordo BB, Violet BLN, Blue B2G, Blue BLF,
Violet 23.Other illuminating colour is
F,
K,
M,
Dyestuff,
Dyestuff powder,
According to one embodiment of the invention, cellulose suspension also can comprise at least a fluorescent chemicals such as OBA, fluorescence organic compound for example, it can absorb ultraviolet ray (for example daylight of 300-430nm) and launch most of energy that is absorbed in the mode of the blue fluorescence of about 400-500nm.The example of OBA is with by name
Those OBA that sell.
Illuminating colour and OBA can add cellulose suspension and/or be applied to cellulosic page or paper surface.They can add cellulose suspension in the arbitrfary point, from mixing channel begin until and comprise head box and/or head box after formed paper web.The interpolation order of illuminating colour and/or OBA, acid anhydrides dispersion and organic compounds containing nitrogen, suitable, the interpolation order of illuminating colour and/or OBA and the acid anhydrides dispersion that comprises organic compounds containing nitrogen can change, and can be any order.
The illuminating colour total amount of adding is generally about at the most 400g/t based on dry cellulosic suspension and optional filler, and suitable is less than about 300g/t.Illuminating colour can add mixing channel.If exist in forming paper, to be the consumption adding cellulose suspension of about 30kg/t at the most based on dry cellulosic suspension, that suitable is about at the most 20kg/t to OBA usually.Usually OBA is added cellulose suspension until and comprise level dyeing case (level box).If illuminating colour and OBA use the two, illuminating colour can add prior to OBA.For example illuminating colour can be added mixing channel, OBA is added the level dyeing case.
Organic compounds containing nitrogen can be selected from amine, as primary amine, secondary amine and tertiary amine and their quaternary ammonium compound.Suitable organic compounds containing nitrogen further comprises monoamine, diamine and polyamine and their quaternary ammonium compound.That the quaternary ammonium compound that is fit to comprises is protonated, the amine of the above-mentioned type of alkylation, arylation and alkarylization, and it can form by these amine and for example acid (example hydrochloric acid), monochloro methane, dimethyl suflfate and benzyl chloride reaction.According to an embodiment, organic compounds containing nitrogen is amine or its quaternary ammonium, randomly has one or more hydroxyls.Preferably, one or more hydroxyls are in the one or more substituent end of organic compounds containing nitrogen, promptly hydroxy-end capped amine or its quaternary ammonium compound.
The example of suitable organic compounds containing nitrogen comprises following amine and their quaternary ammonium: diethylenetriamine, methylene tetramine, hexamethylene diamine, diethylamine, di-n-propylamine, diisopropylamine, cyclohexylamine, pyrrolidines, guanidine, triethanolamine, monoethanolamine, diethanol amine, 2-methoxy ethyl amine, amino ethyl ethanolamine, alanine and lysine.Other example of suitable organic compounds containing nitrogen comprises choline, TMAH, tetraethyl ammonium hydroxide.Preferred organic compounds containing nitrogen comprises triethanolamine and quaternary ammonium compound thereof.
The molal weight of organic compounds containing nitrogen can change in wide region.The used organic compounds containing nitrogen of the present invention is meant non-polymeric type compound, does not promptly contain the compound of constitutional repeating unit.The about at the most 500g/mol of molal weight of common organic compounds containing nitrogen, for example about at the most 400g/mol or about at the most 180g/mol.
According to one embodiment of the invention, the molal weight of this amine or its quaternary ammonium compound is less than about 180g/mol, for example about at the most 170g/mol or about at the most 160g/mol.Its molal weight is usually at least about 30g/mol.As described here, a kind of molal weight of quaternary ammonium of amine is meant the molal weight of this quaternary ammonium compound cationic moiety, means this quaternary ammonium compound anionicsite and is not included in the above molal weight that provides.For being selected from the amine with one or more hydroxyls or the organic compounds containing nitrogen of its quaternary ammonium, its molal weight can be higher, for example less than about 500g/mol, usually less than about 300g/mol, although aforementioned molal weight also is suitable for these compounds.
Cellulose suspension can be distinguished/be added separately to organic compounds containing nitrogen, perhaps joins with other additive such as acid anhydrides sizing agent to add, and for example is included in the aqueous dispersion of acid anhydrides.If add separately, organic compounds containing nitrogen can add in aqueous cellulosic suspension and/or the formed paper web, usually from paper machine reserve pit begin until and comprise head box and/or head box after the arbitrfary point of formed paper web add.When adding separately, the consumption of organic compounds containing nitrogen can be the about 0.0004-0.1 weight % based on dry cellulosic suspension and optional filler, for example about 0.0008-0.01 weight %.
According to an embodiment, organic compounds containing nitrogen and sizing agent are united interpolation.
According to an embodiment, organic compounds containing nitrogen is included in the aqueous dispersion that contains acid anhydrides.
The further embodiment according to the present invention, the aqueous dispersion that comprises acid anhydrides and organic compounds containing nitrogen also comprises anionic polyelectrolyte.
Can be selected from organic and inorganic compound according to anionic polyelectrolyte of the present invention, it can derive from natural or synthetic resource.Anionic polyelectrolyte has the anionic group of two or more identical or different types.Suitable anionic group, promptly be anionic or be the group of anionic property at aqueous phase, example comprises the group of silanol, aluminosilicate, phosphate, phosphonate, sulfate, sulfonate, sulfonic acid and carboxylic acid and their salt, normally ammonium salt or alkali metal (generally being sodium) salt.Anionic polyelectrolyte can be water miscible, for example linear and branching anionic polyelectrolyte; Or water dispersible, for example crosslinked and/or granular anionic polyelectrolyte.According to an embodiment, water dispersible and granular anionic polyelectrolyte are colloids, and promptly granularity is in the colloid scope.The granularity of suitable colloidal particle is 1-100nm, for example 2-70nm or 2-40nm.Water dispersible and granular anionic polyelectrolyte can contain particle gathering and/or non-gathering.
The example of suitable organic anion polyelectrolyte comprises anion polysaccharide, as starch, guar gum, cellulose, chitin, shitosan, polysaccharide, galactan, glucan, xanthans, mannosan and dextrin.Other example of suitable organic anion polyelectrolyte comprises synthetic anionic polymer such as condensation polymer, and for example polyurethane, naphthyl polymer and melamine based polyalcohol are as naphthalenesulfonate formaldehyde condensation compound with based on the polymer of melamine-sulfonic acid; With vinyl addition polymer by the ethylenically unsaturated monomer preparation, wherein ethylenically unsaturated monomer comprises anionic monomer or potential anionic monomer, the phosphate of acrylic acid, methacrylic acid, maleic acid, itaconic acid, crotonic acid, vinyl sulfonic acid, sulfonated phenylethylene, acrylic acid and hydroxyalkyl methacrylate for example, randomly with the copolymerization of nonionic ethylenically unsaturated monomer, the derivative of acrylamide, alkyl acrylate, styrene and acrylonitrile and these monomers for example, vinyl esters or the like.
The example of the organic anion polyelectrolyte that other is suitable comprises water-soluble branched polymer and water dispersible cross-linked polymer, it is obtained by monomer mixture polymerization in the presence of one or more multi-group crosslink agents, and this monomer mixture comprises the unsaturated anionic monomer of one or more olefinics or potential anionic monomer and one or more other ethylenically unsaturated monomers randomly.The existence of multi-group crosslink agent in monomer mixture provides and may prepare the dispersible branched polymer of water, slight crosslinked polymer and highly cross-linked polymer.Suitable multi-group crosslink agent's example comprises the compound with at least two ethylenic unsaturated bonds, as N, N-di-2-ethylhexylphosphine oxide-(methyl) acrylamide, polyethylene glycol two (methyl) acrylate, N-vinyl (methyl) acrylamide, divinylbenzene, triallyl ammonium and N-methacrylic (methyl) acrylamide; Compound with ethylenic unsaturated bond and reactive group, for example (methyl) glycidyl acrylate, acrolein and methylol (methyl) acrylamide; And the compound with at least two reactive groups, for example dialdehyde such as glyoxal, di-epoxy compounds and epoxychloropropane.
The anion substitution value (DSA) of organic anion polyelectrolyte is generally 0.01-1.4, for example 0.1-1.2 or 0.2-1.0.Anionic polyelectrolyte can comprise one or more cation groups, as long as it has anionic charge on the whole.The molal weight of anionic polyelectrolyte can change in wide region; Molal weight is usually more than 200, and for example more than 500, and the upper limit is generally 1,000 ten thousand, and for example 2,000,000g/mol.
The example of suitable inorganic anion polyelectrolyte comprises the anion silicon material, as the anionic silica-based material by silicic acid and the preparation of smectite (smectite) type clay.Usually these anionic polyelectrolytes have negative silanol, aluminosilicate or hydroxyl.The example of suitable inorganic anion polyelectrolyte comprises poly-silicic acid, polysilicate, poly-aluminosilicate, the particle of silica-based colloidal particle such as silica, aluminic acid salinization (aluminium modification) silica and aluminosilicate, polysilicate microgels, poly-aluminosilicate microgel, silica gel and precipitated silica, smectite type clay if you would take off stone, bentonite, hectorite, beidellite (beidelite), nontronite and saponite.The preferred anionic surfactants polyelectrolyte comprises the silica-based material, as the silica-based colloidal particle.
Acid anhydrides can be any anhydride group sizing agent known in the art.Suitably, sizing agent is the hydrophobicity acid anhydrides.Suitable hydrophobicity acid anhydrides can be characterized by following general formula (I), wherein R
1And R
2Be independently selected from the saturated or unsaturated alkyl that suitably contains 8-30 carbon atom, perhaps R
1And R
2Can form 5 to 6 yuan of rings with-C-O-C-structure division, randomly, being contained at the most, the alkyl of 30 carbon atoms further replaces.
R
1-(C＝O)-O-(C＝O)-R
2 (I)
Suitable acid anhydrides example comprises alkyl and alkenyl succinic anhydrides, as different vaccenic acid base succinyl oxide, isooctadecane base succinyl oxide, positive hexadecene base succinyl oxide, dodecenyl succinic anhydride, decene base succinyl oxide, octenyl succinic acid anhydride, triisobutene base succinyl oxide, 1-octyl group-2-decene base-succinyl oxide and 1-hexyl-2-octenyl-succinyl oxide.Suitable acid anhydrides example comprises United States Patent(USP) Nos. 3,102 in addition, and disclosed compound in 064,3,821,069,3,968,005,4,040,900,4,522,686 and Re.29,960 is introduced into as a reference at this.
The cellulose reactive sizing agent can comprise one or more acid anhydrides, for example, and one or more alkyl and/or alkenyl succinic anhydrides.Generally, acid anhydrides of the present invention at room temperature is a liquid.
Suitably, dispersion contains dispersant or the dispersant system that comprises anionic polyelectrolyte and organic compounds containing nitrogen.Can not be effectively as dispersant when although anionic polyelectrolyte and organic compounds containing nitrogen use separately, when being used in combination, these compounds effectively be used as the dispersant of acid anhydrides sizing agent.Preferably, dispersion is anionic, and promptly dispersant or dispersant system have anionic charge on the whole.
About this embodiment, organic compounds containing nitrogen is included in the dispersion of acid anhydrides, and this acid anhydrides can be about 0.1-50 weight % with the weight based on aqueous dispersion, as the amount existence of 0.1-30 weight % or about 1-20 weight %.Optional anionic polyelectrolyte is about 100 weight % at the most with the weight of acid anhydride-based usually, 0.1-15 weight % usually, and that suitable is 0.5-10, as the amount existence of 1-7 weight %.This organic compounds containing nitrogen can be 20 weight % at the most with the weight of acid anhydride-based, 0.1-15 weight % usually, and for example the amount of 0.5-10 weight % or 1-7 weight % exists.Except acid anhydrides, anionic polyelectrolyte and organic compounds containing nitrogen, optional other compound also may reside in this dispersion.That the example of this compounds comprises is single-, two-and many-anion and non-ionic surface active agent and dispersant, stabilizing agent, bulking agent and preservative agent, acid anhydrides as hydrolysis, the for example abovementioned alkyl of hydrolysis and alkenyl acid anhydrides, the alkenyl succinic anhydrides of selective hydrolysis, hydrolysis acid anhydrides as carboxylic acid and/or carboxylic ester derivative form, anion surfactant such as phosphoric acid ester, ethoxylated phosphate esters for example, alkyl sulfate, sulphonic acid ester and phosphate, the alkaryl sulfuric ester, sulfonate and phosphate, for example dodecyl sodium sulfate and the different tridecanol of ethoxylation phosphorylation.If present, the weight that the content of these other compounds in dispersion can acid anhydride-based is 0.1-15 weight %, as 1-10 weight % or 2-7 weight %.Also have water in the dispersion, water can constitute the dispersion remainder of 100 weight % at the most.
The aqueous dispersion that comprises organic compounds containing nitrogen, acid anhydrides and optional anionic polyelectrolyte can contain the mixture of above-mentioned acid anhydrides, anionic polyelectrolyte and organic compounds containing nitrogen by formation, and in the presence of water this mixture is disperseed and make.The component of dispersion can be mixed with any order, but anionic polyelectrolyte and organic compounds containing nitrogen are mixed, and is diluted with water to debita spissitudo, then acid anhydrides is disperseed wherein.According to an embodiment, in adding cellulose suspension and/or paper web before, the dispersion that comprises anionic polyelectrolyte, organic compounds containing nitrogen and acid anhydrides is mixed with starch.Can become the part of retention system with the starch of acid anhydrides dispersion premix.This mixture can adopt provides the suitable dispersing apparatus of enough decentralization to disperse, as the static mixer of relative low-shearing force is provided.The dispersion of gained comprises and has the acid anhydrides drop that diameter is the drop size of 0.1-10 μ m usually.
The aqueous dispersion that comprises the acid anhydrides of organic compounds containing nitrogen can add cellulose suspension, and promptly paper machine reserve pit and head box perhaps add cellulosic paper web or page between the two and comprise the two Anywhere alternatively, as at sizing applicator.According to an embodiment, moisture acid anhydrides dispersion added cellulose suspension before head box.
The acid anhydrides sizing agent consumption that adds cellulose suspension or be applied in cellulosic page or the paper web can be the about 0.01-1 weight % based on dry cellulosic suspension and optional filler, 0.05-0.5 weight % according to appointment.
The method of organic compounds containing nitrogen and moisture size dispersions and purposes also are useful in by the papermaking of the aqueous cellulosic suspension with high conductivity.The electrical conductivity of dehydration rear suspension liquid can be 0.3-10mS/cm on papermaking wire-cloth.According to the present invention,,, for example at least during 7.5mS/cm, can obtain good result as at least 3.5 or at least 5.0 when electrical conductivity is at least 2.0.Electrical conductivity can adopt standard device to measure, for example WTW LF 330 instruments that provide of Christian Berner.Above reference value is so suitably to measure: infeed or be in the electrical conductivity of the cellulose suspension of paper machine head box by measurement, perhaps alternatively, by measuring the electrical conductivity of the plain boiled water that the suspension dehydration obtains.The high conductivity level means high salt (electrolyte) content, and it can derive from the material that is used to form slurry, introduce slurry various additives, infeed fresh water in the process etc.In addition, salt content is higher usually in the process of a large amount of recirculation of plain boiled water, and salt gathers in a large number in this water that can cause circulating in this process.
The invention still further relates to the paper that can be obtained by said method and comprise acid anhydrides and/or the paper of its derivative, organic compounds containing nitrogen and at least a illuminating colour and optional at least a Optical Bleaching Agent, wherein this paper does not have the visible gathering of pigment.This paper can be used for any conventional application.Yet this paper can be used as printing paper or copy paper usually or relate to any other purposes of the good print performance of paper.
Following examples further specify but are not intended to limit the present invention.Except as otherwise noted, part and % represent weight portion and weight % respectively.
Embodiment 1
By with 10g ASA, the olefine fraction based on comprising different hexadecene base and different vaccenic acid base succinyl oxide is dispersed in the aqueous dispersion for preparing alkenyl succinic anhydrides (ASA) in the 190g water that comprises 200mg/l calcium chloride.All dispersions all adopt the preparation of Osterizer laboratory blender.Water is at first added blender, add ASA and the optional amine that contains Ludox (No. 2 dispersions) after, high speed dispersion composition 2 minutes.
Under 0 ℃ temperature, by disperseing 10gASA (EKA SA 420) preparation No. 1 ASA dispersion (ASA content, 5 weight %) in the presence of the 190g water of 200mg/l calcium chloride containing.
Under 12 ℃ the temperature in the presence of the 5g Ludox, by disperse No. 2 ASA dispersions of 10g ASA (EKA SA 820 SF) preparation in containing the 190g water of 200mg/l calcium chloride, this Ludox contains the SiO of 8.0 weight %
2With based on SiO
2Triethanolamine (TEA) (ASA content, the 5 weight % of 50 weight % (in active component, 42.5 weight %); Triethanolamine content, 0.1 weight % is in active component 0.085 weight %).
Under 12 ℃ temperature, by in containing the 190g water of 200mg/l calcium chloride, disperseing the ASA preparation No. 3 ASA dispersions (ASA content, 5 weight %) of 10g100% hydrolysis.
It is (undiluted to add the blue-colored dyestuff of 3.3g in the ASA dispersion that the above-mentioned ownership is equipped with
) and the purple illuminating colour of 28.6g (undiluted
).If ASA dispersion (5%) is corresponding to adding the dried fiber of 30kg ASA/t, then the interpolation of illuminating colour is corresponding to adding 100g/t (blueness) and 860g/t (redness/purple) respectively.After containing the dispersion mixing of illuminating colour, allow to leave standstill 20 minutes.
Embodiment 2
Page prepares according to following method: the ASA dispersion that contains illuminating colour of embodiment 1 is added aqueous cellulosic suspension, described cellulose suspension comprises 80% cork fibrous and 20% hardwood fiber (based on the fiber total amount), fibre concentration with 5g/l, 7% powder lime carbonate (GCC), the electrical conductivity of 2mS/cm (obtaining) by adding calcium chloride, 7.9 the pH value and the Optical Bleaching Agent (OBA) of 1.75kg/t (Leuchophore, UKO).This dispersion is added with the consumption of 30kg/t, calculates with ASA based on dry cellulosic suspension.Used retention system comprises cationic starch and the 7kg/t polyaluminium chloride (PAC) that 5kg/t D.S. is 0.047 (Perlbond 970).After the ASA dispersion adds aqueous cellulosic suspension, before adopting KCL sheet forming apparatus formation page, formed cellulose suspension was mixed 10 seconds.These pages pressurizeed 8 minutes under 3.5bar subsequently, and are dry then.In the present embodiment, all consumptions are based on dry cellulosic suspension, except as otherwise noted.Adopt color spot to estimate these pages.Every paper is divided into quarter, and each measures 8 * 8cm, and they are denoted as 1 to 4.Seven individualities (people) are responsible for the quantity of each scraps of paper blueness of counting and white dot, and the record sum.The average of the spot that every page of paper write down is as shown in table 1 below.
Table 1
Embodiment 3
In the present embodiment, all consumptions are based on dry cellulosic suspension, except as otherwise noted.In large-scale experiment, be 100-280g/m by using the papermaking process that comprises the Fourdrinier Bruderhaus that has the multi-cylinder dry run to make basic weight
2Printing and write and use paper.The suspension batching comprises 50% protofibre, 15-20% dry broke, 17% dry broke and 3-12%GCC or winnofil (PCC) filler.The pH value scope of batch composition is 6.8-7.4.The wet end that following component is added this process:
Table 2: the chemicals of wet end and dosage:
A) according to prior art
Before adding suspension, (Eka ASA 420) infeeds starch flow earlier with the acid anhydrides size dispersions.Do not have organic compounds containing nitrogen in the dispersion, do not have organic compounds containing nitrogen in the cellulose suspension yet.
B) according to invention
Before adding suspension, acid anhydrides sizing agent EKA SA 820SF is carried out emulsification with 2: 1 weight ratio in Ludox stream, this Ludox contains the SiO of 8.0 weight %
2With based on SiO
2Be the triethanolamine (TEA) of 50 weight % (in active component, 42.5 weight %), subsequently with the dispersions obtained cationic starch stream that infeeds.
When using EKA ASA 420 size dispersions, less than 5 days, blue spot in paper as seen.
When use contains Eka SA 820SF and the SiO that contains 8.0 weight %
2With based on SiO
2When being the size dispersions of Ludox of triethanolamine (TEA) of 50 weight % (in active component, 42.5 weight %), move 125 days continuously after, this paper does not have visible blue spot.
Claims (21)
1. method of producing paper by the aqueous suspension of cellulose fiber, comprising i) organic compounds containing nitrogen, ii) the aqueous dispersion of acid anhydrides and iii) at least a illuminating colour add described suspension and/or by in the prepared paper web of described suspension, described suspension are dewatered on papermaking wire-cloth to form paper.
2. according to the process of claim 1 wherein described illuminating colour absorption of electromagnetic radiation in visible spectrum, and not obvious emission electromagnetic radiation or do not launch electromagnetic radiation.
3. according to the method for claim 2, the electromagnetic radiation in wherein about 380-750nm spectral region is absorbed.
4. according to the method for claim 2 or 3, the electromagnetic radiation in wherein about 380-495nm and/or the about 590-750nm spectral region is absorbed.
5. according to the method for aforementioned each claim, wherein said dyestuff is selected from two
Piperazine class and the organic compound that comprises at least one phthalocyanine structure part.
6. according to the method for aforementioned each claim, wherein said organic compounds containing nitrogen has the molal weight of about 500g/mol at the most.
7. according to the method for aforementioned each claim, wherein said organic compounds containing nitrogen is amine or its quaternary ammonium compound.
8. according to the method for aforementioned each claim, wherein said organic compounds containing nitrogen is molal weight amine or its quaternary ammonium compound of about 180g/mol at the most.
9. according to the method for aforementioned each claim, wherein said organic compounds containing nitrogen is included in the aqueous dispersion that contains acid anhydrides.
10. according to the method for claim 9, the wherein said aqueous dispersion that contains acid anhydrides further comprises anionic polyelectrolyte.
11. according to the method for claim 10, wherein said anionic polyelectrolyte comprises the silica-based colloidal particle.
12. according to the method for claim 11, wherein said colloidal particle has the granularity of about 1-100nm.
13. according to the method for aforementioned each claim, wherein said cellulose fibre has the kappa value less than about 8.
14. according to the method for aforementioned each claim, wherein said cellulose fibre has the brightness greater than about 83.
15. according to the method for aforementioned each claim, the electrical conductivity of wherein said cellulose suspension is at least about 2.0mS/cm.
16. according to the method for aforementioned each claim, wherein said suspension further comprises at least a Optical Bleaching Agent.
17. the paper that makes according to the method for aforementioned each claim.
18. a paper that comprises acid anhydrides and/or its derivative, organic compounds containing nitrogen and at least a illuminating colour, wherein said paper does not have the visible gathering of pigment.
19. according to the paper of claim 18, wherein said pigment is azury.
20. organic compounds containing nitrogen in the method for producing paper by suspension as additive to improve the purposes of dye distribution in the paper, described organic compounds containing nitrogen is amine or its quaternary ammonium compound of molal weight less than about 180g/mol, and wherein said suspension comprises at least a illuminating colour.
21. according to the purposes of claim 20, wherein said organic compounds containing nitrogen is included in the aqueous dispersion that contains acid anhydrides.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US6259808P | 2008-01-28 | 2008-01-28 | |
| US61/062,598 | 2008-01-28 | ||
| EP08150723.8 | 2008-01-28 | ||
| EP08150723 | 2008-01-28 | ||
| PCT/EP2009/050813 WO2009095364A1 (en) | 2008-01-28 | 2009-01-26 | A method for production of paper |
Publications (1)
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|---|---|
| CN101925704A true CN101925704A (en) | 2010-12-22 |
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ID=39363350
Family Applications (1)
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|---|---|---|---|
| CN2009801032897A Pending CN101925704A (en) | 2008-01-28 | 2009-01-26 | Produce the method for paper |
Country Status (15)
| Country | Link |
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| US (1) | US20110126995A1 (en) |
| EP (1) | EP2238293A1 (en) |
| JP (1) | JP2011511172A (en) |
| KR (1) | KR20100112633A (en) |
| CN (1) | CN101925704A (en) |
| AR (1) | AR070269A1 (en) |
| AU (1) | AU2009209688A1 (en) |
| BR (1) | BRPI0905748A2 (en) |
| CA (1) | CA2713268A1 (en) |
| CO (1) | CO6280555A2 (en) |
| MX (1) | MX2010008297A (en) |
| RU (1) | RU2010136016A (en) |
| TW (1) | TW201000716A (en) |
| WO (1) | WO2009095364A1 (en) |
| ZA (1) | ZA201006153B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872651A (en) * | 2012-09-25 | 2013-01-16 | 蚌埠凤凰滤清器有限责任公司 | High-filtering precision filter paper of filter for hemp pulp |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2564310C2 (en) * | 2010-07-01 | 2015-09-27 | Клариант Финанс (Бви) Лимитед | Aqueous compositions for bleaching and tinting when applying coatings |
| JP6776364B2 (en) * | 2016-03-22 | 2020-10-28 | オーボ アカデミー ユニヴァーシティー | Polysaccharide derivative as optical brightener |
| WO2018062502A1 (en) * | 2016-09-30 | 2018-04-05 | 王子ホールディングス株式会社 | Pulp, slurry, sheet, laminate, and method for manufacturing pulp |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US480446A (en) * | 1892-08-09 | Means for preventing spots in paper | ||
| US3537807A (en) * | 1967-03-14 | 1970-11-03 | Rohm & Haas | Process for dyeing paper employing metalized dyestuffs containing diethylene triamine |
| BE754466A (en) * | 1969-08-08 | 1971-01-18 | Sandoz Sa | UNIFORM COLORING AND / OR BRIGHTENING PROCESS |
| CH630130A5 (en) * | 1977-08-26 | 1982-05-28 | Ciba Geigy Ag | METHOD FOR PRODUCING SIZED PAPER OR CARDBOARD USING DYES OR OPTICAL BRIGHTENERS AND SALTS OF EPOXYD-AMINE-POLYAMINOAMIDE IMPLEMENTATION PRODUCTS. |
| ES2029345T3 (en) * | 1987-08-26 | 1992-08-01 | Ciba-Geigy Ag | OPTICAL DISPERSION BLEACHERS. |
| US5833744A (en) * | 1997-01-13 | 1998-11-10 | Xerox Corporation | Waterfast ink jet inks containing a surfactant |
| SE9704931D0 (en) * | 1997-02-05 | 1997-12-30 | Akzo Nobel Nv | Sizing of paper |
| GB0021404D0 (en) * | 2000-09-01 | 2000-10-18 | Clariant Int Ltd | Improvement in or to organic compounds |
| EP1963575B1 (en) * | 2005-12-21 | 2014-06-04 | Chemische Fabrik Brühl Mare GmbH | Sizing of paper |
-
2009
- 2009-01-23 TW TW098103096A patent/TW201000716A/en unknown
- 2009-01-26 WO PCT/EP2009/050813 patent/WO2009095364A1/en active Application Filing
- 2009-01-26 AU AU2009209688A patent/AU2009209688A1/en not_active Abandoned
- 2009-01-26 JP JP2010543517A patent/JP2011511172A/en active Pending
- 2009-01-26 RU RU2010136016/12A patent/RU2010136016A/en not_active Application Discontinuation
- 2009-01-26 KR KR1020107018975A patent/KR20100112633A/en not_active Application Discontinuation
- 2009-01-26 CN CN2009801032897A patent/CN101925704A/en active Pending
- 2009-01-26 MX MX2010008297A patent/MX2010008297A/en unknown
- 2009-01-26 US US12/864,986 patent/US20110126995A1/en not_active Abandoned
- 2009-01-26 EP EP09707025A patent/EP2238293A1/en not_active Withdrawn
- 2009-01-26 BR BRPI0905748-0A patent/BRPI0905748A2/en not_active IP Right Cessation
- 2009-01-26 CA CA2713268A patent/CA2713268A1/en not_active Abandoned
- 2009-01-27 AR ARP090100251A patent/AR070269A1/en unknown
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2010
- 2010-07-15 CO CO10086203A patent/CO6280555A2/en not_active Application Discontinuation
- 2010-08-27 ZA ZA2010/06153A patent/ZA201006153B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102872651A (en) * | 2012-09-25 | 2013-01-16 | 蚌埠凤凰滤清器有限责任公司 | High-filtering precision filter paper of filter for hemp pulp |
| CN102872651B (en) * | 2012-09-25 | 2014-09-03 | 蚌埠凤凰滤清器有限责任公司 | High-filtering precision filter paper of filter for hemp pulp |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0905748A2 (en) | 2015-07-14 |
| JP2011511172A (en) | 2011-04-07 |
| RU2010136016A (en) | 2012-03-10 |
| EP2238293A1 (en) | 2010-10-13 |
| AR070269A1 (en) | 2010-03-25 |
| US20110126995A1 (en) | 2011-06-02 |
| MX2010008297A (en) | 2010-08-18 |
| KR20100112633A (en) | 2010-10-19 |
| WO2009095364A1 (en) | 2009-08-06 |
| CA2713268A1 (en) | 2009-08-06 |
| ZA201006153B (en) | 2011-05-25 |
| TW201000716A (en) | 2010-01-01 |
| CO6280555A2 (en) | 2011-05-20 |
| AU2009209688A1 (en) | 2009-08-06 |
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