WO2005001198A1 - 印刷用紙 - Google Patents
印刷用紙 Download PDFInfo
- Publication number
- WO2005001198A1 WO2005001198A1 PCT/JP2004/009143 JP2004009143W WO2005001198A1 WO 2005001198 A1 WO2005001198 A1 WO 2005001198A1 JP 2004009143 W JP2004009143 W JP 2004009143W WO 2005001198 A1 WO2005001198 A1 WO 2005001198A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pulp
- paper
- fading
- printing paper
- bleaching
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
- D21C9/001—Modification of pulp properties
-
- 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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/04—Physical treatment, e.g. heating, irradiating
-
- 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
Definitions
- the present invention relates to a printing paper which is bulky and has less decrease in whiteness with time, that is, less fading, and particularly relates to a printing paper suitable for book use.
- kraft pulp, alkali pulp, sulfite pulp, etc. which have a production yield of about 50%, in order to effectively use paper pulp produced from forest resources Stone crushed wood pulp, refiner ground wood pulp, pressurized ground wood pulp, thermomechanical pulp, chemisamomechanical pulp, bleached chemothermomechanical pulp, etc., with a yield of about 90% or more higher than that of chemical pulp (hereinafter referred to as CP)
- CP chemical pulp
- Paper having as high a mechanical pulp (MP) content as possible is advantageous. It is also required to improve the utilization rate of waste paper pulp (hereinafter referred to as DIP), which is once used as paper and then disintegrated and reused.
- DIP waste paper pulp
- the lightening of paper refers to lightening while maintaining the thickness of the paper, that is, low-density (bulky) paper.
- the wood is defibrated with a groundwood pulp refiner that uses a grinder to grind the wood from a CP from which lignin, a reinforcing material in the fiber, has been removed with chemicals.
- MP such as the obtained thermomechanical pulp has a more rigid fiber and is more effective in reducing the density.
- groundwood pulp greatly contributes to the reduction in density. In this way, MP is more advantageous for effective use of resources and weight reduction of paper.
- the strength S which is more advantageous than that of MP, causes the change in whiteness over time, that is, the problem of fading, which increases with the compounding. Due to this fading on paper, a major quality problem arises, and its mix is limited.
- Ability to save wood resources by increasing the blending amount of waste paper pulp Normally, waste paper is rarely classified and pulped according to varieties such as high-quality paper, newsprint, magazines, flyers, and coated paper. Since MP is pulped while being mixed, it shows the same quality of fading as MP. For this reason, wastepaper pulp is blended with high-quality paper. To do so, it is necessary to use properly sorted waste paper. When considering resource issues as described above, it is advantageous to increase the mixing ratio of MP and DIP as much as possible, and the power that can contribute to the light weight of paper due to the mixing of MP There is a problem, especially for long-standing book paper in bookstores.
- the problem of fading of pulp over time is a common problem irrespective of the type of pulp such as CP, semi-chemical pulp (hereinafter, referred to as SCP), MP, and DIP. It is affected by the residual amount of lignin or its denatured product in the pulp. Therefore, among the pulp types, MP with the highest residual amount of lignin or its denatured product has the most fading, followed by SCP and CP.
- the fading of DIP largely depends on the amount of MP contained.
- Lignin is oxidized during bleaching of pulp, and hydroquinone, which is a modified product, is produced.
- This hydroquinone is easily oxidized into a quinone by the reaction shown in Chemical Formula 1 and is colored.
- lignin remaining in the pulp without being oxidized is excited and oxidatively decomposed by ultraviolet light in the reaction represented by the chemical formula 2, whereby a quinone-based compound is newly generated and colored. Therefore, as a conventional technique for improving the bleaching property of pulp, it is necessary to add a bleaching chemical or an alkali chemical in the pulp bleaching step to decompose or remove lignin or a denatured product thereof which is a bleaching substance. It is usually done.
- MP has more residual lignin and its denatured products than CP and SCP, and therefore has a greater fading intensity than CP or SCP. Is intense.
- the lignin power hydroquinone oxidized during bleaching with hydrogen peroxide is generated, and this hydroquinone is easily oxidized to quinone, which is one of the major factors for strong coloring.
- the production of hydroquinone increases as the bleaching is enhanced, the fading becomes more severe in MPs with higher whiteness.
- Non-Patent Document 1 a method of using a water-soluble ultraviolet absorber and a light stabilizer in combination has been shown. Also, a method for reducing an aromatic ring of lignin in MP is disclosed (see Non-Patent Document 2).
- ultraviolet absorbers and the like are also deteriorated by ultraviolet rays, and thus have the disadvantage that their effects do not last long.
- a rhodium-based catalyst is used to reduce the lignin aromatic ring, the aromatic ring hydrogenation of lignin isolated from wood was performed at room temperature in an alcohol aqueous solution.
- Non-Patent Document 3 As a conventional technique, there is a literature that in a hydrogen peroxide bleaching stage under alkaline conditions, the bleaching property is improved as the reaction time is longer and the hydrogen peroxide addition rate is higher at a higher temperature (Non-Patent Document 3). reference). Also, when bleaching the pulp obtained from the lignocellulosic material in a bleaching sequence of chlorine and / or chlorine dioxide stage-alkali / oxygen stage-chlorine dioxide stage-chlorine dioxide stage, the first of the successive chlorine dioxide stages is bleached. A bleaching method has been registered in which alkali is added at the latter stage of the reaction, and the ratio of chlorine dioxide in the first and second stages is 40Z60 70Z30 (see Patent Document 1).
- a multi-stage bleaching method including a step of treating pulp obtained from a lignocellulosic substance with hypochlorite after extraction with chlorine and alkali
- the bleaching step with hypochlorite is absolutely dry.
- 1.0 per pulp weight A bleaching method has been registered in which pulp is treated at a temperature of 60 ° C. or more by adding an alkali of not less than 60% (see Patent Document 2).
- Pulp bleached by a sequence including at least one chlorine-based bleaching stage as a bleaching stage is treated with xylanase, and further bleached in a bleaching sequence of a hypochlorite stage and a chlorine dioxide stage.
- a technique characterized by the following is disclosed (see Patent Document 3).
- the chlorine dioxide bleaching stage the chlorine dioxide addition rate is 1% by weight per absolute dry pulp, 3% by weight, etc., the chlorine dioxide / alkali ratio is 1 / 0.3, and the technology is implemented at high temperature. It is disclosed (see Patent Document 4).
- a suspension of cellulose pulp produced by the sulfate or alkali method may be heated and treated at about 85-150 ° C at a pH of about 2-5 to reduce at least about hexeneduronic acid in the cellulose pulp.
- a technique has been disclosed in which 50% is removed and the monovalent value of pulp is reduced by 2 to 9 units (see Patent Document 5).
- Non-Patent Document 1 Yuan, Z "et al., J. Pulp Paper ScL, 28 (5), 159 (2002)
- Non-Patent Document 2 Hu, T.Q., et al, J. Pulp Paper ScL, 25 (9), 312 (1999)
- Non-Patent Document 3 The Bleaching of Pulp, P382, P384, TAPPI PRESS (1979), N. Hartler,
- Patent Document 1 Japanese Patent Publication No. 7-6147
- Patent Document 2 Patent No. 2115315
- Patent Document 3 JP-A-6-101185
- Patent Document 4 JP-A-9-105091
- Patent Document 5 Japanese Patent Publication No. 10-508346
- Patent Document 6 Patent No. 3371228
- Patent Document 7 Patent No. 3368336
- Patent Document 8 JP-A-2002-88673
- An object of the present invention is to obtain a printing paper with less fading by using pulp having improved fading properties, whereby (1) little change in whiteness, that is, fading is suppressed.
- the inventors of the present invention have conducted intensive studies and have found that bleached or unbleached mechanical pulp, semi-chemical pulp, chemical pulp, and deinked pulp can be reduced to one or more types of mixed pulp.
- Discoloration by including pulp that has been irradiated with ultraviolet and / or visible light in the presence of at least one additive selected from the group of chemicals, oxidants, and hydrogen-donating organic compounds It has been found that a printing paper with significantly improved results can be obtained.
- reducing agent, oxidizing agent, hydrogen donor Similarly, by performing irradiation treatment with ultraviolet light and / or visible light in the presence of at least one additive selected from the group of organic compounds, it is possible to obtain a printing paper in which discoloration is also significantly improved. Can be
- Papermaking is performed by blending pulp irradiated with ultraviolet or visible light in the presence of at least one compound selected from the group consisting of a reducing agent, an oxidizing agent, and a hydrogen-donating organic compound.
- a compound selected from the group consisting of a reducing agent, an oxidizing agent, and a hydrogen-donating organic compound By providing a method for improving the fading property by irradiating the UV-visible light to the treated paper, the fading of the paper is greatly suppressed, and particularly, MPs with a high yield can be treated or applied to MP-containing paper. Light and bulky paper can be machined with less wood resources, resulting in environmentally friendly effects.
- the pulp used for the printing paper of the present invention is a bleached or unbleached mechanical pulp, semi-chemical pulp, chemical pulp, deinked pulp or the like obtained from wood as a raw pulp.
- One type of pulp may be used, or a mixture of two or more types of pulp may be used.
- bleaching means pulp obtained by subjecting unbleached pulp to, for example, ordinary multi-stage bleaching or short sequence bleaching. Since the present invention is very effective for pulp having remarkable bleaching properties, it is preferable to use bleached mechanical pulp in this regard.
- reducing agents As the compound used for improving the bleaching property of the pulp used in the present invention, known reducing agents, oxidizing agents, and hydrogen-donating organic compounds used as bleaching agents and bleaching agents can be used. Pulp is treated in the presence of at least one compound from these groups.
- Examples of such a reducing agent include a sulfite or bisulfite ion, sulfide, a sulfite, a borohydride compound and the like.
- This borohydride compound is usually represented by the following general formula (1) or (2).
- the metal ions in the above general formula (1) include monovalent metal ions such as alkali metals, divalent metal ions such as alkaline earth metals, and trivalent metal ions. Is a stable ion, but quaternary ammonium ions are particularly suitable.
- R is preferably an aliphatic hydrocarbon group having 1 to 20 carbon atoms, more preferably 1 to 10 carbon atoms, preferably an aromatic hydrocarbon group having 6 to 20 carbon atoms, more preferably an aromatic hydrocarbon having 6 to 14 carbon atoms.
- an alkyl-substituted hydrocarbon group having preferably 7 to 40 carbon atoms, more preferably 7 to 24 carbon atoms. When there are two or more substituents R, Rs may be the same or different.
- the borohydride compound particularly preferably used in the present invention is sodium borohydride or tetrabutylammonium borohydride. Sodium borohydride or tetrabutylammonium borohydride or mixtures thereof can also be used.
- a peroxide is preferable.
- the peroxide either an organic peroxide or an inorganic peroxide can be used.
- the organic peroxide a compound represented by the following general formula (3) can be used.
- R and R ′ may be the same or different and may represent a hydrocarbon group, an alkylcarbonyl group, an arylcarbonyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, a formyl group, or hydrogen.
- hydrocarbon group examples include an aromatic hydrocarbon group such as a phenyl group, a naphthyl group, a biphenyl group, and an anthryl group, an aliphatic hydrocarbon group, a substituted product thereof, and the like.
- examples include an acetyl group, an ethylcarbonyl group, a propionylcarbonyl group, a substituted product thereof, and the like.
- Examples of the arylcarbonyl group include a benzoyl group, a naphthylcarbonyl group, a biphenylcarbonyl group, a substituted product thereof, and the like.
- Examples of the alkoxylcarbonyl group include a methoxycarbonyl group, an ethoxycarbonyl group, a substituted product thereof, and the like.
- Examples of the aryloxycarbonyl group include a phenoxycarbonyl group, a naphthoxycarbonyl group, a biphenyloxycarbonyl group, a substituted product thereof, and the like.
- Specific examples of these organic peroxides include, for example, Examples include perbenzoic acid and its derivatives, peracids such as peracetic acid and formic acid, esters of these peracids, percarbonates and their esters, and the like.
- Examples of the inorganic peroxide include hydrogen peroxide, sodium percarbonate, sodium peroxide and the like.
- examples of the oxidizing agent include ozone, oxygen, and other halogen-free oxidizing agents.
- alcohols and amides are preferred.
- alcohols primary alcohols represented by the following general formula (4) are particularly preferred. Specifically, ethyl alcohol, Benzyl alcohol, furfuryl alcohol and the like can be mentioned. Also
- the hydrogen-donating organic substance is not limited to the above-mentioned alcohols and amides, but any compound having a hydrogen-donating ability.
- the reducing agent, oxidizing agent, and hydrogen-donating organic compound used in the pulp treatment used in the printing paper of the present invention may be used alone without using a solvent. It is desirable to use it by dispersing or dissolving it.
- a solvent water, alcohols, linear or cyclic alkanes, ethers or other single solvents, or mixed waters of these solvents are preferably used.
- the amount of the reducing agent, the oxidizing agent, and the hydrogen-donating organic compound to be used is not particularly limited as long as it is equal to or lower than the saturation concentration of the compound with respect to the solvent, but is preferably 0.01 to 40% ( (Weight / volume), more preferably 0.1-20%. Also.
- the amount of the reducing agent, the oxidizing agent, and the hydrogen-donating organic compound to be used based on the solid content of the pulp is 0.05 to 50% by solid content, more preferably 0.1 to 25% by solid content.
- the ultraviolet light and / or visible light there are no particular restrictions on the ultraviolet light and / or visible light, but it is desirable to use a light having a wavelength power of S180 to 800 nm, preferably about 200 to 500 nm. This is because the maximum absorption wavelengths of lignin, paraquinone, and orthoquinone are 280 nm, 360 nm, and 390-410 nm, respectively.
- ordinary light sources such as a low-pressure mercury lamp, a high-pressure mercury lamp, a xenon lamp, and a black light, various excimer lamps, various lasers, and the like can be used. For large-scale processing, the above-mentioned ordinary light sources are preferred.
- Laser light may be pulsed light or continuous irradiation light.
- Excimer lasers ArF excimer lasers, KrF excimer lasers, XeCl excimer lasers, XeF excimer lasers, etc.
- argon ions Lasers, krypton ion lasers, and second and third harmonics of YAG lasers are preferably used.
- pulsed light is O.lmj / pulse 'cm 2 l.Okj / Panoreth' cm 2
- continuous light is O.lmW / cm 2 — 10kW / cm 2 Is suitable.
- the light irradiation temperature is not particularly limited, but is preferably ⁇ 80 to 100 ° C., and more preferably 0 to 80 ° C.
- the light irradiation time is appropriately determined by taking into account the amount of latent coloring substances contained in the raw pulp, the type and concentration of additives or solvents, and the type and intensity of ultraviolet rays and Z or visible light to be irradiated. Usually, one hundred and sixty minutes is sufficient.
- the pulp used for the printing paper of the present invention emits ultraviolet light and / or visible light in the presence of pulp and at least one compound selected from a reducing agent, an oxidizing agent, and a hydrogen-donating organic compound.
- a reducing agent an oxidizing agent
- a hydrogen-donating organic compound an organic compound that is organic compound that is organic compound.
- Preferred embodiments include, for example, 1) a solvent containing at least one compound selected from a reducing agent, an oxidizing agent, and a hydrogen-donating organic compound and transmitting ultraviolet light and / or visible light; After dispersing the pulp, there is a method of 3) irradiating ultraviolet light and / or visible light.
- the solvent is water
- at least one compound selected from a reducing agent, an oxidizing agent, and a hydrogen-donating organic compound is added to the aqueous pulp suspension discharged from the bleaching process. Thereafter, ultraviolet and / or visible light is applied.
- 3) a method of irradiating ultraviolet rays, Z or visible light, or the like can be given.
- the pulp water suspension coming out of the bleaching step is dehydrated by a machine such as a pulp sheet machine, and a reducing agent and an oxidizing agent are added to the sheet-like pulp. And at least one compound selected from hydrogen-donating organic compounds, and irradiating the compound with ultraviolet light and / or visible light.
- the blending amount of the pulp treated for fading to be used for the printing paper of the present invention is not particularly limited. Further, as described above, the entire paper once made may be subjected to the fading improving treatment. . However, MP fades more greatly than CP, and it is more efficient to improve the fading of only the MP or DIP containing MP.
- the printing paper of the present invention may contain a paper strength enhancer.
- paper strength agents include starch, processed starch, polyacrylanolamide, polybutyl alcohol, polyamide 'polyamine resin, urea' formalin resin, melamine 'formalin resin, polyethyleneimine, and the like.
- the content of the paper strength enhancer is preferably 0.1% by weight or more and 2% by weight or less based on the absolute dry weight of the pulp.
- the printing paper of the present invention may be a chemical pulp (bleached kraft pulp of softwood (NBKP) or unbleached kraft pulp (NUKP), bleached kraft pulp of hardwood (LBKP) or unbleached kraft panolep (LUKP), mechanical pulp (grand pulp (GP), thermomechanical pulp (TMP), chemithermomechanical pulp (CTMP), etc.), deinked pulp (DIP) alone or optional Mix and use in proportions.
- the pH during papermaking may be acidic, neutral or alkaline.
- the printing paper of the present invention may contain a filler.
- a filler known fillers such as white carbon, talc, kaolin, clay, heavy calcium carbonate, light calcium carbonate, titanium oxide, and synthetic resin filler can be used.
- the printing paper of the present invention may contain a sulfuric acid band, a sizing agent, a retention improver, a drainage improver, a coloring agent, a dye, an antifoaming agent, and the like, as necessary.
- the printing paper of the present invention may be coated with a force that has not been coated at all or a surface treatment agent that does not contain a pigment, or may be used as a base paper for coating.
- the uncoated printing paper of the present invention is desirably coated with a surface treatment agent containing a water-soluble polymer as a main component for the purpose of improving the surface strength and the size.
- a surface treatment agent containing a water-soluble polymer as a main component for the purpose of improving the surface strength and the size.
- water-soluble polymer those usually used as surface treatment agents such as starch, oxidized starch, processed starch, carboxymethylcellulose, polyacrylanolamide, and polybutyl alcohol can be used alone or in combination.
- some surface treatment agents are designed to improve water resistance and surface strength in addition to water-soluble polymers.
- a paper strength enhancer or an externally added sizing agent for imparting sizing property can be added.
- the surface treatment agent can be applied by a coating machine such as a two-roll size press coater, gate roll coater, blade metalling coater, rod metaling coater, etc. It is preferable to use a coater-type coating machine such as a coater because the surface treatment agent stays on the paper surface and increases the density less.
- the coating amount of the surface treatment agent is preferably O.lg / m 2 or more and 3 g / m 2 or less per one side.
- the paper of the present invention is not only book paper, but also offset printing paper, letterpress printing paper, gravure printing paper, newsprint paper, electrophotographic paper, or coated paper, ink jet recording paper, heat-sensitive recording paper, pressure-sensitive recording paper, and the like. Can also be used as base paper.
- Discoloration test The sample was irradiated with ultraviolet light, which also generates xenon lamps, for 1.0 hour using a xenon lamp weather meter (Suga Test Instruments Co., Ltd.), and then the ISO whiteness was measured.
- the test conditions were black panel temperature 63 ° C, humidity 50%, and irradiance 70W.
- BCTMP (l) (Bleached Chemi-thermomechanical pulp, Miller Western Co., 85% ISO brightness, 250 ml of freeness CSF 250 ml), 90 parts of LBKP (freeness of CSF 400 ml)
- LBKP freeness of CSF 400 ml
- Mix 1 First, 0.9% sulfuric acid band (to pulp), 0.5% cationized starch for internal use (trade name: Cato 3210, manufactured by NSC Japan), and light calcium carbonate so as to have an ash power after papermaking.
- Talc was mixed and mixed in a ratio of 6: 4, and paper was made with an orientation paper machine (manufactured by Kumagaya Riki Kogyo Co., Ltd.) at a basis weight of 46 g / m 2 .
- This sample was immersed in a 6% aqueous solution of sodium borohydride (w / v), and then placed on a glass plate. At this time, the impregnation amount of sodium borohydride was 18% by solid weight based on the weight of solids of norp. This was irradiated with a 40 mj / cm 2 'pulse, 5 Hz KrF excimer laser for 40 minutes. After the laser irradiation, the sample was washed with water, dried with a cylinder drier, and subjected to a fading test.
- Example 2 The same operation as in Example 1 was performed except that the amount of BCTMP (l) was changed to 30 parts and the amount of LBKP was changed to 70 parts.
- BCTMP (2) Massiller Western Co., ISO whiteness 70%, N material 25%, Aspen 75%) was used instead of BCTMP (l).
- BCTMP (l) (Miller Western, ISO brightness 85%, freeness 250 ml C.SF) was disintegrated at a concentration of 2%, and this pulp dispersion was mixed with 20% sodium borohydride (w / v) based on pulp. After being put, it was put in a transparent plastic bag, and irradiated with ultraviolet rays for 12 hours by a low-pressure mercury lamp (AY-1,244 w / m 2 manufactured by Japan Photo Science Co., Ltd.) and washed with water.
- AY-1,244 w / m 2 manufactured by Japan Photo Science Co., Ltd.
- Example 4 The same operation as in Example 4 was performed except that the blending amount of the BCTMP (l) subjected to the ultraviolet irradiation treatment was changed to 30 parts and the blending amount of the LBKP was changed to 70 parts.
- BCTMP was not blended, and LBKP was 100 parts. Internally added chemicals and filler were blended in the same manner as in Example 1 and paper was made using an oriented paper machine. This sample was subjected to a fading test.
- Example 1 a discoloration test was directly performed on a sample made by an orientation paper machine.
- Example 2 a sample formed by an orientation paper machine was subjected to a discoloration test as it was.
- Example 3 a discoloration test was directly performed on a sample made by an orientation paper machine.
- Comparative Examples 2-4 the weight was reduced in the same manner as in Comparative Example 1 in which no MP was added, but the discoloration was remarkable.
- the fading is greatly suppressed, and the light weight and the fading suppression are both achieved by the blending of MP, so that it is suitable for book paper and it is possible to blend MP with a high yield. It also leads to resource reduction.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/562,788 US20060237153A1 (en) | 2003-06-30 | 2004-06-29 | Printing papers |
CA002541819A CA2541819A1 (en) | 2003-06-30 | 2004-06-29 | Printing paper |
EP04746612A EP1645687A1 (en) | 2003-06-30 | 2004-06-29 | Printing paper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003186737A JP4666450B2 (ja) | 2003-06-30 | 2003-06-30 | 印刷用紙の製造方法 |
JP2003-186737 | 2003-06-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005001198A1 true WO2005001198A1 (ja) | 2005-01-06 |
Family
ID=33549700
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/009143 WO2005001198A1 (ja) | 2003-06-30 | 2004-06-29 | 印刷用紙 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060237153A1 (ja) |
EP (1) | EP1645687A1 (ja) |
JP (1) | JP4666450B2 (ja) |
CN (1) | CN1826447A (ja) |
CA (1) | CA2541819A1 (ja) |
WO (1) | WO2005001198A1 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008011523A2 (en) | 2006-07-21 | 2008-01-24 | Nalco Company | Improved compositions and processes for paper production |
US8246780B2 (en) | 2005-09-19 | 2012-08-21 | Nalco Company | Methods for enhancing brightness and resistance to thermal yellowing of bleached kraft pulp and paper |
US9932709B2 (en) | 2013-03-15 | 2018-04-03 | Ecolab Usa Inc. | Processes and compositions for brightness improvement in paper production |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4868907B2 (ja) * | 2006-03-27 | 2012-02-01 | 大王製紙株式会社 | 印刷用紙 |
FI123957B (fi) * | 2009-02-20 | 2014-01-15 | Laminating Papers Oy | Menetelmä merkinnöin varustetun impregnaatin valmistamiseksi, impregnaatilla pinnoitettu levy sekä impregnaatin käyttö betonivalumuotissa |
CN102838900A (zh) * | 2012-09-21 | 2012-12-26 | 山西大学 | 一种水性可降解环保型油墨及其脱色剂 |
JP6297253B2 (ja) * | 2012-10-10 | 2018-03-20 | 北越紀州製紙株式会社 | 白板紙 |
WO2018140030A1 (en) | 2017-01-27 | 2018-08-02 | Hewlett-Packard Development Company, L.P. | Printing systems |
CN114516234A (zh) * | 2022-01-04 | 2022-05-20 | 河南印爱文化艺术有限公司 | 一种纸张的防污印刷方法 |
Citations (7)
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JPS56144284A (en) * | 1980-03-21 | 1981-11-10 | Int Paper Co | Deliginification and bleaching of lignocellulose pulp by photooxidation |
JPS59501168A (ja) * | 1982-06-24 | 1984-07-05 | スコツト・ペ−パ−・カンパニ− | セルロ−ズ物質のオゾン漂白 |
JPH01229895A (ja) * | 1988-03-09 | 1989-09-13 | Kammerer Gmbh | 帯状紙の白色度の再生ないしは安定性を増進する方法および耐黄変性支持材料 |
JPH06128890A (ja) * | 1992-10-20 | 1994-05-10 | Honshu Paper Co Ltd | パルプの漂白方法 |
JP2002088673A (ja) * | 2000-06-20 | 2002-03-27 | National Institute Of Advanced Industrial & Technology | パルプ漂白方法 |
JP2002088671A (ja) * | 2000-06-20 | 2002-03-27 | National Institute Of Advanced Industrial & Technology | パルプの漂白方法 |
JP2002088672A (ja) * | 2000-06-20 | 2002-03-27 | National Institute Of Advanced Industrial & Technology | パルプ漂白方法 |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5360515A (en) * | 1993-08-25 | 1994-11-01 | The Research Foundation Of The State University Of New York | Method for reducing thermal and light-induced brightness reversion in lignin-containing pulps |
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2003
- 2003-06-30 JP JP2003186737A patent/JP4666450B2/ja not_active Expired - Lifetime
-
2004
- 2004-06-29 US US10/562,788 patent/US20060237153A1/en not_active Abandoned
- 2004-06-29 CA CA002541819A patent/CA2541819A1/en not_active Abandoned
- 2004-06-29 EP EP04746612A patent/EP1645687A1/en not_active Withdrawn
- 2004-06-29 WO PCT/JP2004/009143 patent/WO2005001198A1/ja active Application Filing
- 2004-06-29 CN CNA2004800207590A patent/CN1826447A/zh active Pending
Patent Citations (7)
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JPS56144284A (en) * | 1980-03-21 | 1981-11-10 | Int Paper Co | Deliginification and bleaching of lignocellulose pulp by photooxidation |
JPS59501168A (ja) * | 1982-06-24 | 1984-07-05 | スコツト・ペ−パ−・カンパニ− | セルロ−ズ物質のオゾン漂白 |
JPH01229895A (ja) * | 1988-03-09 | 1989-09-13 | Kammerer Gmbh | 帯状紙の白色度の再生ないしは安定性を増進する方法および耐黄変性支持材料 |
JPH06128890A (ja) * | 1992-10-20 | 1994-05-10 | Honshu Paper Co Ltd | パルプの漂白方法 |
JP2002088673A (ja) * | 2000-06-20 | 2002-03-27 | National Institute Of Advanced Industrial & Technology | パルプ漂白方法 |
JP2002088671A (ja) * | 2000-06-20 | 2002-03-27 | National Institute Of Advanced Industrial & Technology | パルプの漂白方法 |
JP2002088672A (ja) * | 2000-06-20 | 2002-03-27 | National Institute Of Advanced Industrial & Technology | パルプ漂白方法 |
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US8246780B2 (en) | 2005-09-19 | 2012-08-21 | Nalco Company | Methods for enhancing brightness and resistance to thermal yellowing of bleached kraft pulp and paper |
WO2008011523A2 (en) | 2006-07-21 | 2008-01-24 | Nalco Company | Improved compositions and processes for paper production |
WO2008011523A3 (en) * | 2006-07-21 | 2009-04-30 | Nalco Co | Improved compositions and processes for paper production |
US7914646B2 (en) * | 2006-07-21 | 2011-03-29 | Nalco Company | Compositions and processes for paper production |
US8262858B2 (en) | 2006-07-21 | 2012-09-11 | Nalco Company | Compositions and processes for paper production |
KR101377236B1 (ko) * | 2006-07-21 | 2014-03-27 | 날코 컴퍼니 | 종이 제조를 위한 개선된 조성물 및 제조 방법 |
US9932709B2 (en) | 2013-03-15 | 2018-04-03 | Ecolab Usa Inc. | Processes and compositions for brightness improvement in paper production |
Also Published As
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JP2005023438A (ja) | 2005-01-27 |
EP1645687A1 (en) | 2006-04-12 |
JP4666450B2 (ja) | 2011-04-06 |
US20060237153A1 (en) | 2006-10-26 |
CA2541819A1 (en) | 2005-01-06 |
CN1826447A (zh) | 2006-08-30 |
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