WO2006100996A1 - 填料内添紙及びその製造方法 - Google Patents
填料内添紙及びその製造方法 Download PDFInfo
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- WO2006100996A1 WO2006100996A1 PCT/JP2006/305210 JP2006305210W WO2006100996A1 WO 2006100996 A1 WO2006100996 A1 WO 2006100996A1 JP 2006305210 W JP2006305210 W JP 2006305210W WO 2006100996 A1 WO2006100996 A1 WO 2006100996A1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
- C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
- C09C1/02—Compounds of alkaline earth metals or magnesium
- C09C1/021—Calcium carbonates
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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
- D21H17/63—Inorganic compounds
- D21H17/67—Water-insoluble compounds, e.g. fillers, pigments
- D21H17/69—Water-insoluble compounds, e.g. fillers, pigments modified, e.g. by association with other compositions prior to incorporation in the pulp or paper
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/60—Optical properties, e.g. expressed in CIELAB-values
Definitions
- the present invention relates to a filler-added paper and a method for producing the same, and the paper strength can be improved efficiently with a small amount of chemical by internally adding a filler coated with a composite acrylamide copolymer. provide.
- Acrylic latex is added to the filler suspension to form a filler agglomerate in advance for the purpose of producing filler-added paper with little reduction in paper strength and strength due to filler filling.
- Added to the suspension ie not adding acrylic latex to the pulp and filler suspension (Claim 1, paragraph [0001], paragraph [0 004]) o
- the acrylic latex is composed of acrylic monomers such as (meth) acrylic acid, alkyl (meth) acrylate, hydroxy group-containing alkyl (meth) acrylate, or other monomers that can be copolymerized with these (styrenes). , Unsaturated dicarboxylic acid, etc.) (paragraphs [0012] to [0014]). [0004] (2) Patent Document 2
- filler-added paper is produced (claim 1, paragraph [0001], paragraphs [0005] to [0006]).
- Adsorbed amphoteric PAM on calcium carbonate for the purpose of obtaining an internal paper with calcium carbonate as a filler, improving the strength of the paper Is used as a filler (claims, page 2, upper right column to lower right column).
- white paper is produced by using an inorganic filler (filler) obtained by treating an inorganic substance such as calcium carbonate with a cellulose derivative such as sodium carboxymethyl cellulose (CMC). 1-9, pages 5-6, Examples 1A-1H).
- iller inorganic filler obtained by treating an inorganic substance such as calcium carbonate with a cellulose derivative such as sodium carboxymethyl cellulose (CMC). 1-9, pages 5-6, Examples 1A-1H).
- Patent Document 5
- the filler is agglomerated with cationic starch and force thiogua gum, and this agglomerated filler is added to the pulp slurry for wet papermaking. (Claims 1-2, paragraphs [0004], paragraphs [0008]-[0013], paragraph [0024]).
- heavy calcium carbonate is mixed with a cation-modified starch aqueous solution in advance and then added to pulp slurry and wet papermaking (patent) Claim, page 2, upper right column to lower right column).
- a cationic polymer such as sodium polyacrylate may be used in combination with the cationically modified starch (the upper left column on page 3).
- a pre-agglomerated filler is added to the pulp slurry (claim 1, step).
- the flocculant water-soluble bull polymers, gums, PAM, aluminum sulfate, ⁇ -on or ⁇ ⁇ -based starch derivatives are listed (paragraphs [0016] to [0016]. 0018]).
- Patent Document 1 Japanese Unexamined Patent Application Publication No. 2004-100119
- Patent Document 2 JP 2004-18323 A
- Patent Document 3 Japanese Patent Application Laid-Open No. 59-26595
- Patent Document 4 Japanese Patent Publication No. 9-505099
- Patent Document 5 Japanese Patent Laid-Open No. 10-60794
- Patent Document 6 Japanese Patent Laid-Open No. 60-119299
- Patent Document 7 Japanese Unexamined Patent Publication No. 2000-129589
- Patent Documents 1 and 4 to 6 since a single ionic agent is used, the charge balance of the processing system is determined only by the amount of the processing agent, and the range of the optimum processing conditions is narrowed in terms of charge balance. If the condition force is not met, the adsorption efficiency of the treatment agent to the filler will deteriorate. In References 2 to 3, the force of using amphoteric PAM to treat the filler If the treatment concentration is not appropriate and cannot be adsorbed on the surface of the filler (calcium carbonate), the chemical works effectively as a treating agent. It is hard to do.
- the treatment agent used in Patent Document 2 is a force that is an amphoteric branched PAM. Since the polymer has a flexible main chain and a compact adsorption form during adsorption, the branched PAM is effective. There is a limit to the range to be used, and the paper strength improvement effect is not sufficient. Furthermore, in order to obtain a higher paper strength improvement effect, if a large amount of the processing agents listed in Patent Documents 1 to 7 above are used, the paper strength will not be increased, causing a decrease in ash content, etc. Even when adding (cationic cocoon starch, PAM paper strength agent) to improve paper strength, increasing the amount of addition causes reduction in ash content and size (see test examples below).
- an object of the present invention is to efficiently improve paper strength by adding a small amount of a chemical such as a paper strength enhancer in a paper in which a large amount of filler is internally added.
- the present inventors have developed a treatment agent capable of setting a wide treatment concentration range that makes it easy to achieve a charge balance that is not possible with a single ionic treatment agent such as acrylic latex or CMC disclosed in the above-mentioned patent documents. I have studied earnestly.
- composite ⁇ PAM a composite acrylamide copolymer composed of (A) a-on polysaccharide and (B) a cationic and / or amphoteric acrylamide copolymer
- the filler-added paper of the present invention has a composite PAM composed of (A) a cationic polysaccharide and (B) a cationic and Z or amphoteric acrylamide copolymer. Contains coated coating filler.
- the composite PAM is a mixture obtained by mixing the component (A) and the component (B), or in the presence of the component (A), the constituent monomer of the component (B) is used as a co-polymer. This is a product obtained by a polymerization reaction.
- the ionic polysaccharide may be at least one kind of ionic cellulose such as carboxymethylcellulose, alginic acid, anionic starch, anionic gum and the like.
- the filler calcium carbonate should be used.
- the content of the covering filler in the internal paper is preferably 5 to 40% by weight.
- At least one selected from cationic starch and acrylamide copolymer strength is contained as an internal additive.
- a method for producing a filler-added paper comprises: (A) a ionic polysaccharide and (B) a composite PAM comprising a cationic and Z or amphoteric acrylamide copolymer. It comprises a step of adding an aqueous solution to the filler slurry to obtain a coated filler obtained by coating the filler with composite PAM, and a step of wet paper making by adding the coated filler to the pulp slurry.
- Another method for producing a filler-added paper that is useful in the present invention includes: (A) a ionic polysaccharide; and (B) Add ON and Z or amphoteric acrylamide copolymers separately to filler slurry
- the complex PAM is composed of (A) a cation polysaccharide and (B) a cationic or amphoteric PAM. Because of its cationic and hydrophilic properties, it forms a polyion complex that combines the properties of both, so it can exhibit a moderate cohesive effect on filler particles such as calcium carbonate and high affinity for pulp slurry. .
- a coated filler obtained by treating a filler such as calcium carbonate with a composite PAM that combines two specific components with different charge characteristics has a moderate agglomeration effect and is excellent in affinity with pulp slurry.
- the filler-added paper of the present invention contains a filler treated with a composite PAM, and is a composite composite consisting of an ionic polysaccharide (A) and a PAM component (B). Add the PAM solution to the filler slurry, or add the two components (A) and (B) separately to the filler slurry to coat the filler with the composite PAM, and then apply the coated filler. Is added to the pulp slurry and is made by wet papermaking.
- the complex PAM is composed of (A) cation polysaccharide and (B) cationic and Z or amphoteric PAM. In this case, the component (B) force is also eliminated.
- Examples of the arion polysaccharide (A) include, as acid substituents, starches having a carboxyl group, sulfate group or sulfonate group introduced therein, alginic acids, cellulose, and the like. Derivatives such as gums and gums can be used alone or in admixture of two or more.
- a specific method for producing a cation polysaccharide a polysaccharide having a carboxyl group can be produced by allowing a cation agent such as black mouth acetic acid to act on various polysaccharides.
- CMC carboxymethylcelluloses
- alginic acids alginic acid and salts thereof
- xanthan gum carboxymethyl dialgum
- phosphorylated guar gum carboxy Examples
- carboxy Examples include methyl starch and phosphate starch.
- CMC and alginic acids are preferable.
- amphoteric acrylamide copolymer (referred to as amphoteric PAM for convenience) comprises (a) (meth) acrylamide, (b) a cationic monomer, and (c) The monomer is a constituent.
- Examples of the (meth) acrylamide (a) include acrylamide (abbreviated as AM) and Z or methacrylamide.
- the cationic monomer (b) is composed of a primary to tertiary amino group-containing (meth) acrylamide, a primary to tertiary amino group-containing (meth) acrylate, and a quaternary ammonium base-containing (meth) acrylamide.
- Quaternary ammonium base-containing (meth) atarylates and diallyldialkyl ammonium halides, including one or more cationic groups in the molecule.
- a typical example of an ammonium base-containing monomer is a compound represented by the following general formula (1).
- R is CH or CH; R is a C alkylene group; R, R and R are hydrogen atoms, C
- A may be O or NH;
- X represents a key-on such as halogen or alkyl sulfate.
- Examples of the cationic monomer (b) include primary to tertiary amino group-containing (meth) acrylamide, primary to tertiary amino group-containing (meth) acrylate, and quaternary ammonium base-containing (meth) acrylamide. Quaternary ammonia base containing (meth) acrylate is preferred.
- Examples of the primary to secondary amino group-containing (meth) acrylamide include primary amino group-containing (meth) acrylamides such as aminoethyl (meth) acrylamide, or methylaminoethyl (meth). Secondary amino group-containing (meth) acrylamides such as acrylamide, ethylaminoethyl (meth) acrylamide, and t-butylaminoethyl (meth) acrylamide.
- the tertiary amino group-containing (meth) acrylamides are dimethylaminoethyl (meth) acrylamide, dimethylaminobutyryl (meth) acrylamide (dimethylaminopropylacrylamide is abbreviated as DMAPAA), and jetylaminoethyl (meth).
- Typical examples include dialkylaminoalkyl (meth) acrylamides such as acrylamide and jetylaminopropyl (meth) acrylamide.
- Examples of the primary to secondary amino group-containing (meth) acrylate include, for example, primary amino group-containing (meth) acrylate, such as aminoethyl (meth) acrylate, or methylaminoethyl (meth) Secondary amino group-containing (meth) acrylates such as acrylate, ethylaminoethyl (meth) acrylate, and t-butylaminoethyl (meth) acrylate.
- tertiary amino group-containing (meth) acrylate examples include dimethylaminoethyl (meth) acrylate (dimethylaminoethyl methacrylate is abbreviated as DM), dimethylaminopropyl (meth) acrylate, and jetyl.
- Typical examples include dialkylaminoalkyl (meth) acrylates such as aminoethyl (meth) acrylate and jetylaminopropyl (meth) acrylate.
- the quaternary ammonium base-containing (meth) acrylamide or the quaternary ammonia base-containing (meth) acrylate is a tertiary ammonium base-containing (meth) acrylamide or a tertiary ammonia.
- Dimethylammo-um chloride methacryloyllochichetyl dimethyl benzylammo-mum chloride (abbreviated as DMBQ), Atalloy oral chichetil dimethyl benzil ammo-mum chloride, (meth) atalyloylaminoethyltrimethylammo-um chloride, (meth) ataryloylamino Ethyltriethylammo-um chloride, (meth) atarirolochachite rutrime Ruanmo - Umukurorido, (meth) Atari Roy Loki Chez tilt Rye chill ammoxidation - like ⁇ beam chloride.
- DMBQ methacryloyllochichetyl dimethyl benzylammo-mum chloride
- Atalloy oral chichetil dimethyl benzil ammo-mum chloride (meth) atalyloylaminoethyltrimethylammo
- a bis quaternary base-containing monomer having two quaternary ammonium bases in the molecule can be used from the viewpoint of increasing the molecular weight.
- Specific examples include bis quaternary base-containing (meth) acrylamide having two quaternary ammonium bases, or bis quaternary base-containing (meth) acrylate.
- diallyl alkyl ammonium halide belonging to the quaternary ammonium base-containing cationic monomer is, for example, diallyl dimethyl ammonium chloride.
- the ionic monomer (c) which is a structural unit of the amphoteric PAM is a, j8-unsaturated carboxylic acids, ⁇ , unsaturated sulfonic acids.
- the above unsaturated carboxylic acids are (meth) atalylic acid (acrylic acid is abbreviated as ⁇ ), (anhydrous) maleic acid, fumaric acid, itaconic acid (abbreviated as ⁇ ), (anhydrous) citraconic acid, its sodium, potassium, ammo -Umu salt.
- unsaturated sulfonic acids examples include vinyl sulfonic acid, (meth) aryl sulfonic acid, styrene sulfonic acid, sulfopropyl (meth) acrylate, 2- (meth) acrylamide-2-methylpropanosulfonic acid, and salts thereof.
- the above components (a) to (c) are further used with a crosslinkable monomer (d) and Z or a chain transfer agent (e), so that the copolymer has a branched crosslinked structure.
- the above-mentioned crosslinking monomer (d) increases the molecular weight of the copolymer, reduces the loss of filler in the papermaking process, especially the flow of fine fibers and filler from the wire stitches during dehydration, and reduces the amount of filler in the paper. It has the effect of increasing the amount of filler).
- crosslinking monomer (d) examples include methyl bisacrylamide (abbreviated as MBAM), bis (meth) acrylamides such as ethylene bis (meth) acrylamide, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate.
- MBAM methyl bisacrylamide
- bis (meth) acrylamides such as ethylene bis (meth) acrylamide, ethylene glycol di (meth) acrylate, diethylene glycol di (meth) acrylate.
- Di (meth) atalylates such as rate, dimethylacrylamide (abbreviated as DMAM), and metatalilonitrile can be used.
- the chain transfer agent functions to suppress the increase in the viscosity of the copolymer and to adjust the molecular weight by increasing the branched structure.
- chain transfer agents include mercaptors such as isopropyl alcohol (abbreviated as IPA), sodium methallyl sulfonate (abbreviated as SMS), sodium allyl sulfonate (abbreviated as SAS), n-dodecyl mercaptan, mercaptoethanol, thioglycolic acid and the like.
- Known chain transfer agents such as tans can be used.
- a non-one monomer such as acrylonitrile may be used as the other monomer as required.
- the components (a) to (c) of the amphoteric PAM (A) can be used alone or in combination.
- the content of components (a) to (c) in the amphoteric PAM (A) is arbitrary and is not particularly limited, but the content of (meth) acrylamide (a) in the copolymer is 65 to 98.8. mol%, the force thione monomer (b) is from 1 to 20 mole 0/0, ⁇ - one monomer (c) has from 0.2 to 15 mole 0/0 good preferable.
- the cationic acrylamide copolymer (referred to as cationic PAM for convenience) among the components (B) comprises (meth) acrylamide (a) and a cationic monomer (b) as constituent components.
- these (meth) acrylamide (a) and the cationic monomer (b) can use the corresponding components listed as the constituent monomer components of the amphoteric PAM.
- the above-mentioned components (a) and (b) are further branched to the copolymer using the crosslinkable monomers (d) and Z or the chain transfer agent (e). You may make it have a structure.
- a non-one monomer such as acrylonitrile may be used as another monomer.
- the components (a) and (b) of the cationic PAM can be used singly or in combination, as in the case of the amphoteric PAM.
- components (a) and (b) in the cationic PAM are arbitrary and are not particularly limited.
- the content of (meth) acrylamide (a) in the copolymer is 85 to 99 mol%
- thione monomer (b) is preferably is 1 to 15 mole 0/0! /,.
- the composite PAM is produced by mixing the component (A) and the component (B) or polymerizing the constituent monomer of the component (B) in the presence of the component (A).
- the composite (PAM) can be produced by coexisting the component (A).
- the constituent monomers for producing amphoteric or cationic PAM are, as described above, (a) acrylamide, (b) cationic monomer, and (c) cation monomer.
- a copolymerization reaction is carried out in the presence of an ionic polysaccharide, the ionic polysaccharide is mixed in the generated amphoteric or cationic PAM, and both form a polyion complex.
- the complexed PAM of the present invention may be prepared by adding a cationic polysaccharide (A) before the copolymerization reaction when the cationic or amphoteric PAM is produced by the copolymerization reaction.
- a polyion complex may be formed between components (A) and (B) that can be added after the reaction.
- the mixing ratio (weight ratio) of the component (A) and the component (B) is: :, 6: 2-45 / 98-55, preferably 4 30 / 96 ⁇ 70 power ⁇ Preferred more! / ⁇ .
- the amount of the ⁇ ⁇ -on polysaccharide ( ⁇ ) exceeds 45% by weight, the amount of ⁇ ⁇ -on will be excessive and the adsorption rate to the filler will decrease, the particle size of the coated filler will not increase properly, and the yield will also increase. There is a risk of decline. Since two types of composites having different charge characteristics are a feature of the present invention, the effect of the composite type is reduced when the ionic polysaccharide ( ⁇ ) is less than 2% by weight.
- filler known ones can be arbitrarily used. For example, calcium carbonate, clay, silica, strength iron, magnesium carbonate, barium carbonate, barium sulfate, hydroxide-aluminum, oxide-lead, acid-oxide.
- Inorganic fillers such as titanium, organic fillers such as urea-formalin resin, melamine-based resin, polystyrene resin, and phenol resin can be used alone or in combination.
- a preferred filler is calcium carbonate.
- an aqueous solution of composite soot is preferably added to the filler slurry.
- the two liquids of the components ( ⁇ ) and ( ⁇ ) are added separately to the filler slurry.
- a method of adding may be used.
- the average particle size of the coated filler is about 10 to 50 ⁇ m, preferably about 20 to 40 ⁇ m. It is good. If the particle size is too small, the whiteness will increase. Paper strength will not increase. If the particle size is too large, the paper strength will increase, but the whiteness will decrease significantly.
- the amount of the coating filler added to the total amount of the pulp slurry system after the addition of the coating filler is preferably about 10 to 50% by weight. Further, the content of the coated filler in the filler-added paper obtained by wet papermaking should be 5 to 40% by weight, preferably 15 to 30% by weight.
- filler As a method of adding filler to the pulp slurry, various chemicals such as paper strength agents and sizing agents are added to the pulp slurry, and then the filler is collectively added before the step of diluting the pulp slurry with water. Add it at the first stage before adding the sulfuric acid band (aluminum sulfate) (including the case where the waste paper is refluxed; for example, about 30% of the total weight of the filler). There are also two methods of adding in a divided manner (for example, see Examples 1 and 10 below). When normal filler is used, the paper strength of the split addition method is lower than that of the batch method under the same amount of addition. On the other hand, when the coating filler of the present invention is used, the paper strength is not greatly affected by any of the addition method of division and batch. There is little variation! / There is an advantage that the filler-added paper can be easily manufactured.
- sulfuric acid band aluminum sulfate
- Pulp slurry contains paper strength agents such as cationized starch, acrylamide copolymer (PAM polymer), PVA polymer, sizing agent such as aluminum sulfate and rosin resin, water filter agent, yield It goes without saying that various chemicals such as improvers, water-resistant agents, or UV inhibitors can be added.
- paper strength agents such as cationized starch, acrylamide copolymer (PAM polymer), PVA polymer, sizing agent such as aluminum sulfate and rosin resin, water filter agent, yield
- a paper strength agent such as cationic starch or PAM to the norp slurry. That is, by adding cationized starch and Z or PAM paper strength agent to the pulp slurry together with the coated filler of the present invention, the paper strength of the filler-added paper can be further improved.
- the basis of the production method of the present invention is to coat the filler with the composite PAM, and then add the coated filler to the pulp slurry to perform wet papermaking.
- the method for producing a coated filler is effective in producing a polyion complex.
- the two components (A) and (B) may be added separately to the filler slurry.
- Component (A) and component are contained in a large-capacity pulp slurry. A sufficient paper strength cannot be secured with the internal paper obtained by simply adding (B) and filler (whether or not added at the same time or with a time difference).
- the type of the internal paper of the present invention is arbitrary and is not particularly limited.
- high-quality and medium-quality printing paper newsprint paper, art paper, base paper such as cast coated paper, PPC paper, ink jet recording paper, Examples include laser printer paper, thermal recording paper, and pressure sensitive recording paper.
- amphoteric or cationic acrylamide copolymers as raw materials for the composite PAM of the present invention (referred to as PAM-2-4 for the sake of convenience) and ionic acrylamide copolymers (referred to as PAM-5 for convenience)
- PAM-1 and ⁇ ⁇ as a char-on polymer (PAA-1), filler treatment agent or paper strength agent (internal chemical) is also described. 3 ⁇ 4.
- a mixture of 680 g of water, 103 g of 98% akudinoleic acid, and 0.8 g of sodium azinolesnorephonate was adjusted to pH 3.5 using V of 10% soda.
- Table 1 shows the types and mole ratios (%) of the constituent monomers of PAM-1 to 5 and PAA-1, and the copolymer constants.
- PAA-1 ⁇ 100 SAS, NaOH 15.7 6.5 4,100 Combined PAM
- PAA Sodium polyacrylate
- PAM-C1 to C11 are examples in which the composite PAM was prepared by premixing the components (A) and (B) of the present invention, but PAM-C12 was premixed with PAM-2 and CMC. Without showing the combination of the preparations to be added separately to the filler slurry. This is an example of forming a composite PAM after separately added to a rally.
- a PAM-C14 was prepared by mixing PAM-3 (amphoteric PAM) and PAM-5 (a-on PAM) without using a ionic polysaccharide, and in Comparative Synthesis Example 2 above.
- An example will be described in which PAA-C1 was prepared by mixing a terpolymer with cationic starch.
- CMC a-on polysaccharide: A component
- PAM-2 B component
- Table 2 shows the composition contents and mixing ratios of PAM-C1 to C14 and PAA-C1.
- composition content and constants of PAM-C 15 are shown in the bottom column of Table 1.
- coating treatment examples 1 to 13 in the coating treatment example 12, two liquids of the component (A) and the component (B) are separately added to the filler slurry, and the filler is coated with the composite PAM in the filler slurry.
- all other coating treatment examples are prepared by mixing two liquids of component (A) and component (B) in advance to prepare composite ⁇ PAM, and then added to the filler slurry It is a batch processing example.
- Examples 1 to 9 and Comparative Examples 3 to 4 are examples in which no PAM paper strength agent is added to the pulp slurry as an internal additive.
- Examples 10-20, Comparative Examples 1-2, Comparative Examples 5-1 As shown in Table 4, 4 is an example in which a PAM paper strength agent was added.
- cationic starch (a paper strength agent or a retention agent) was added to the pulp slurry as an internal additive.
- Examples 1 to 9 are examples in which the treatment amount of complexed PAM (PAM C3) to calcium carbonate was changed, and Examples 4 to 9 were treatment amounts to calcium carbonate (0 This is an example of changing the type of composite PAM while fixing 2% by weight).
- Examples 10 to 12 are examples in which the treatment amount of PAM (PAM-C2) combined with calcium carbonate was changed, and Examples 13 to 20 fixed the treatment amount (0.2% by weight) to the filler. This is an example of changing the type of composite PAM.
- Example 18 is a treatment example of complex PAM, which is preferably eron polysaccharide (CMC) and contained at the upper limit (45% by weight) of the addition range.
- CMC eron polysaccharide
- Example 19 is an example of a two-stage process in which two liquids of components (A) and (B) are separately added to the filler slurry, and all other examples are prepared by adding two liquids of components (A) and (B) in advance. It is an example of the batch processing which mixed and added the force to the filler slurry.
- Comparative Examples 1 to 14 are blank examples in which a normal filler (calcium carbonate) is used without using a covering filler.
- Comparative Examples 13 to 14 are blank examples, as shown in Table 4, and are examples in which the amount of PAM-based paper strength additive for internal addition was increased.
- Comparative Example 3 does not use any ionic polysaccharides and treats the filler only with amphoteric PAM (PAM-1), Comparative Example 4 uses normal fillers and no PAM strength agent It is an example.
- Comparative Example 5 is an example of treatment with a conjugated polysaccharide PAM (PAM-C13), which is a ionic polysaccharide (CMC) and a ionic PAM (PAM-5), and Comparative Example 6 is a ionic PAM.
- PAM-C13 conjugated polysaccharide PAM
- CMC ionic polysaccharide
- PAM-5 ionic PAM
- Comparative Example 6 is a ionic PAM.
- This is an example of treatment with a composite component of amphoteric PAM.
- Comparative Example 7 is an example in which a filler treated only with amphoteric PAM (PAM-1) was used without using a ionic polysaccharide.
- Comparative Examples 8 to 9 are examples in which amphoteric or cationic PAM is not used, and fillers treated only with a cation polysaccharide (CMC) are used, and Comparative Example 8 has a low content of CMC.
- Example and Comparative Example 9 are examples in which the same concentration was increased.
- CS cationic starch
- Comparative Example 11 is a cationized starch and a cation.
- PAM-C1 a conductive polymer
- Comparative Example 12 is filler Without treatment with pre-complexed PAM, filler,
- the treated calcium carbonate was added by the above-described division method.
- Table 3 The left half of Table 3 and Table 4 summarizes the types of treatment agents that have been treated with fillers and the amount of internal chemicals (PAM treatment agents).
- the prepared pulp slurry is made with a square hand-making machine (25cm x 25cm, wire: 80 mesh), moisture adjusted with a press, dried with a drum dryer, and a target basis weight of 72gZ.
- a sheet sample (filler-added paper) was prepared so as to be. This sheet was left for 24 hours in a constant temperature room at 23 ° CZ50% RH, and then the paper quality was measured (the same is true for the following examples and comparative examples). Table 3 shows the measurement results.
- Example 1 Based on Example 1 above, a sheet sample was prepared by the same operation as Example 1 except that the coating and calcium carbonate in which the type and amount of composite PAM were changed as shown in Table 3 were used. .
- a sheet sample was prepared in the same manner as in Comparative Example 1 except that the amount of the internal paper strength agent PAM-1 was increased from 0.1 wt% to 0.2 wt% based on Comparative Example 1.
- Comparative Example 1 On the basis of Comparative Example 1, a sheet sample was prepared in the same manner as Comparative Example 1, except that the internal paper strength agent PAM-1 was not added.
- 1% cationized starch aqueous solution gelatinized after 30 seconds 0.8% by weight (vs dry paper), 4% after 1% PAM-1 aqueous solution 0.3% by weight (vs dry paper), 1 minute later sizing solution The 0.4% by weight (vs dry paper), 1 minute 15 seconds later, 5% treated coal aqueous solution 20g (71% of total coal amount) and 150g water are continuously added, 1 minute 30 seconds later, retention agent lOOppm (To dry paper) was added, and stirring was stopped after 2 minutes to prepare.
- the prepared pulp slurry was made by the same operation as in Example 1 to prepare a sheet sample.
- a sheet sample was prepared in the same manner as in Example 10 except that the type, amount added, and amount of internal paper strength agent were changed as shown in Table 4 on the basis of Example 10 above.
- Example 10 Based on Example 10, a sheet sample was prepared by the same operation as in Example 10 except that the type, amount of added calcium carbonate, and amount of internal paper strength agent were changed as shown in Table 4.
- a sheet sample was prepared by the same operation as Comparative Example 1 except that three components (untreated) calcium carbonate, CMC, and PAM-2 were separately added to the pulp slurry. .
- a sheet sample was prepared in the same manner as in Comparative Example 1 except that the amount of the internal paper strength agent PAM-1 was increased as shown in Table 4 on the basis of the above Comparative Example 1.
- Breaking length (km) Measured based on JIS P8113.
- Ash content (% by weight): Measured based on JIS P 8128, and ashing was performed at 525 ° C for 2 hours.
- Whiteness (%) Measured with a hunter whiteness meter (automatic hunter whiteness photometer, manufactured by Kumagai Riki Kogyo Co., Ltd.) based on JIS P 8123.
- Particle diameter m 50% volume average for composite treated with PAM, etc., or untreated filler using laser single diffraction Z-scattering particle size distribution analyzer (Horiba, LA-920) The particle size was measured.
- a force-treated filler for example, Example 10 to : in which the particle diameter of a normal filler (Comparative Examples 13 to 14) that is not treated with composite PAM is 3.5 m.
- the particle diameter of L 1) is 23.5 to 34.9 ⁇ m, and it can be seen that the particle diameter is appropriately increased due to the aggregation of the filler.
- Comparative Examples 13 to 14 a large amount of PAM-1 (internal additive) was added (0.4% by weight or 0.6% by weight), so the sizing degree was lower than that of Comparative Examples 5 to 6.
- Comparative Example 4 is an example in which, in addition to the usual filler (calcium carbonate), only cationic starch is added as an internal additive, and PAM paper strength agent is not added.
- Comparative Examples 1 and 2 are examples in which this normal filler is used and a PAM paper strength agent is added (thus, Comparative Examples 1 and 2 have a greater paper strength (breaking length) than Comparative Example 4). .
- Examples 1 to 9 are compared with Comparative Examples 1 and 2 and Comparative Example 4, Examples 1 to 9 (PAM series)
- PAM series The paper strength was not increased, and the paper strength increased due to the large tear length, and the yield rate of ash was generally improved.
- the paper strength is significantly increased in Examples 1 to 9 in which the filler treated with the composite PAM (without adding the PAM-based paper strength agent) is added as compared with Comparative Example 4. It was clarified that paper strength can be improved more effectively than Comparative Examples 1 and 2 to which a PAM paper strength agent was added.
- Examples 1-9 were superior in both paper strength and ash content, and the filler treated with the composite PAM of the present invention was superior. It was confirmed that it contributes effectively to improvements in paper strength.
- Comparative Example 5 is an example in which the filler was treated with a composite component of CMC and ionic PAM
- Comparative Example 6 was an example of treatment with a composite of ionic PAM and amphoteric PAM
- Comparative Example 7 was amphoteric.
- Examples treated with PAM (PAM-1) alone and Comparative Examples 8-9 are examples treated with CMC alone.
- the paper strength (breaking length) of Examples 10 to 18 was remarkably improved, and it was found that the whiteness and size were not inferior.
- the improvement in paper strength is supported by the fact that the particle diameters of the treated fillers of Examples 10 to 18 are increased appropriately (aggregated).
- Comparative Examples 8 to 9 the CMC concentration in Comparative Example 8 is as low as 0.05% by weight. Therefore, the paper strength in Comparative Example 8 is lower than that in Comparative Example 9 (CMC concentration is 0.2% by weight). However, it is clearly inferior to Examples 10-20. This is because CMC has a high ion charge density, so if used alone as a filler, the charge of the system will be excessive in a small amount, and at high concentrations the adsorption rate of CMC on the filler surface will increase. This means that only a low paper strength improvement effect can be expected as a treating agent within a very limited low concentration range.
- Comparative Example 11 is an example in which the filler was treated with a composite component of a cationic polymer (cationic starch) and a cation polymer (sodium polyacrylate) in accordance with Patent Document 6 described above. It turns out that paper strength is remarkably inferior compared with Examples 10-18.
- the present invention reduces the chemicals by compounding the filler with two specific polymers with different charge characteristics. Although it is characterized by an effective improvement in paper strength in terms of quantity, in view of this comparison with Comparative Example 11, for example, simply selecting any combination of a cationic polymer and a ionic polymer As shown in the present invention, which is less effective, it is confirmed that it is necessary to select a combination of two specific polymers.
- Comparative Example 12 is the same force as the present invention in using (A) CMC, (B) PAM-2 and filler of the present invention.
- This is an example in which the above three components are simply added to a (large-capacity) pulp slurry, rather than treating the filler in advance with composite PAM.
- the paper strength (2.08 km) of Comparative Example 12 was the same level as that of Comparative Example 2 in which a filler and a PAM paper strength agent were added, and it was confirmed that the paper strength was significantly inferior to that of Examples 10-20. Accordingly, in order to exert the effects of the present invention, before adding to the pulp slurry, the composite (P) component (A) and (B) are combined in advance. It is confirmed that it is necessary to treat the filler with component (A) and component (B) in the filler slurry.
- the mixing ratio of components (A) and (B) is more preferably 5 to 30% by weight when component A is used as an index, and a composite corresponding to the same ratio is used.
- PAM PAM C 2-10, 12
- all of them showed excellent paper strength.
- the component of the composite PAM for processing the filler is a combination of a ionic polysaccharide and a cationic PAM (PAM-C9).
- the paper strength of Example 17 is a combination of a ionic polysaccharide and an amphoteric PAM.
- the paper strength of Example 14 using PAM-C5 which is an alginate whose amber polysaccharide is alginic acid, is also different from that of other examples (C-on polysaccharide is CMC). There was no dark blue.
- Example 20 using PAM-C15 which is a product obtained by polymerization reaction of constituent monomers of amphoteric PAM in the presence of a ionic polysaccharide in the production of composite PAM, Compared to the examples (mixture preparation of components (A) and (B)), the discoloration was still strong.
- the paper strength of Example 19 (PAM-C12) in which two liquids of components (A) and (B) were separately added to the filler slurry was Compared with the other examples of the one-stage treatment in which the liquid of composite PAM prepared in advance from (B) was added to the filler slurry, there was no inferiority.
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Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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CN2006800071941A CN101133210B (zh) | 2005-03-18 | 2006-03-16 | 填料内添纸及其制造方法 |
CA2601721A CA2601721C (en) | 2005-03-18 | 2006-03-16 | Filled paper and method of manufacturing the same |
AU2006225770A AU2006225770B2 (en) | 2005-03-18 | 2006-03-16 | Filled paper and process for producing the same |
US11/886,452 US8414739B2 (en) | 2005-03-18 | 2006-03-16 | Filled paper and method of manufacturing the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-080365 | 2005-03-18 | ||
JP2005080365A JP4406882B2 (ja) | 2005-03-18 | 2005-03-18 | 填料内添紙及びその製造方法 |
Publications (1)
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WO2006100996A1 true WO2006100996A1 (ja) | 2006-09-28 |
Family
ID=37023657
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PCT/JP2006/305210 WO2006100996A1 (ja) | 2005-03-18 | 2006-03-16 | 填料内添紙及びその製造方法 |
Country Status (7)
Country | Link |
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US (1) | US8414739B2 (ja) |
JP (1) | JP4406882B2 (ja) |
KR (1) | KR100953130B1 (ja) |
CN (1) | CN101133210B (ja) |
AU (1) | AU2006225770B2 (ja) |
CA (1) | CA2601721C (ja) |
WO (1) | WO2006100996A1 (ja) |
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WO2007086497A1 (ja) * | 2006-01-26 | 2007-08-02 | Nippon Paper Industries Co., Ltd. | 予備凝集填料を添加した紙とその製造方法 |
JP2008248398A (ja) * | 2007-03-29 | 2008-10-16 | Nippon Paper Industries Co Ltd | 紙の製造方法および紙 |
JP2010532431A (ja) * | 2007-07-05 | 2010-10-07 | ビーエーエスエフ ソシエタス・ヨーロピア | 微細粒の填料の水性スラリーの製造方法及び高い填料含有量及び高い乾燥強度を有する紙の製造のためのその使用 |
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Also Published As
Publication number | Publication date |
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KR20080004453A (ko) | 2008-01-09 |
CA2601721C (en) | 2012-12-04 |
CN101133210A (zh) | 2008-02-27 |
JP2006257606A (ja) | 2006-09-28 |
JP4406882B2 (ja) | 2010-02-03 |
US20090020250A1 (en) | 2009-01-22 |
CA2601721A1 (en) | 2006-09-28 |
AU2006225770B2 (en) | 2010-03-04 |
AU2006225770A1 (en) | 2006-09-28 |
KR100953130B1 (ko) | 2010-04-16 |
US8414739B2 (en) | 2013-04-09 |
CN101133210B (zh) | 2010-11-24 |
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