KR101776915B1 - Composition for deacidification and method for production thereof - Google Patents
Composition for deacidification and method for production thereof Download PDFInfo
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- KR101776915B1 KR101776915B1 KR1020150175041A KR20150175041A KR101776915B1 KR 101776915 B1 KR101776915 B1 KR 101776915B1 KR 1020150175041 A KR1020150175041 A KR 1020150175041A KR 20150175041 A KR20150175041 A KR 20150175041A KR 101776915 B1 KR101776915 B1 KR 101776915B1
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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
- D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
- D21H25/02—Chemical or biochemical treatment
-
- 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
- D21H17/04—Hydrocarbons
-
- 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
- D21H17/675—Oxides, hydroxides or carbonates
-
- 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
- D21H17/71—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes
- D21H17/74—Mixtures of material ; Pulp or paper comprising several different materials not incorporated by special processes of organic and inorganic material
-
- 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
- D21H19/00—Coated paper; Coating material
- D21H19/36—Coatings with pigments
- D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
- D21H19/64—Inorganic 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
- 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
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
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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
- 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
- D21H21/38—Corrosion-inhibiting agents or anti-oxidants
-
- 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
- D21H25/18—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00 of old paper as in books, documents, e.g. restoring
Abstract
The present invention relates to a deoxidizing composition and a method for producing the same, And petroleum solvents; Wherein the nano-MgO is contained in an amount of more than 0 and not more than 10 parts by weight based on 100 parts by weight of the petroleum solvent, and a method for producing the same. The composition for deoxidation treatment of the present invention exhibits an excellent deoxidizing effect and can prevent whitening.
Description
TECHNICAL FIELD The present invention relates to a deoxidizing composition, a process for producing the same, and a deoxidation process using the same.
Printing papers such as books and newspapers are deteriorated by various causes such as intrinsic acidity, photodegradation, oxidation, microorganisms and the like, and are damaged when stored for a long time.
In the case of printing paper, paper materials made of pulp fibers are used, and these paper materials are generally processed by applying chemical additives or the like in order to improve printing quality. Since these chemical additives are acidic or deposited by an acidic mechanism, they are an important cause of acidic deterioration. In order to prevent acidic decomposition, a method of deoxidizing or treating an alkali preservative or buffer to prevent the conversion into an acidic state . Drugs used in the deoxidation process have problems such as toxicity, environmental pollution, high price, etc., and the drying step of the paper must proceed before the treatment, so that the treatment process is complicated.
Recently, the initial acidity of paper can be effectively neutralized and a deoxidation reaction can be provided by using a dispersion of alkaline particles of basic metal oxide, hydroxide or salt such as magnesium oxide, etc. However, since expensive inert halogenated hydrocarbons are used as a carrier , The production cost is high, and the whole quantity is imported, so there is a limitation in production.
After the deoxidation process, the deoxidation treatment agent frequently causes the bleaching phenomenon due to the agglomeration phenomenon of the particles on the surface of the paper, and a post-treatment process is required to treat the bleaching phenomenon. However, in the post- There is a problem in that it is difficult to work, and further deterioration is caused in old paper records in the physical removal process.
SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a deacidification composition and a method for producing the same, which can improve the process efficiency of the deacidification treatment and reduce the whitening phenomenon on the substrate after the deacidification treatment .
The present invention also provides a deoxidation treatment method using the composition for deoxidation treatment according to the present invention.
The problems to be solved by the present invention are not limited to the above-mentioned problems, and other matters not mentioned can be clearly understood by those skilled in the art from the following description.
One aspect of the present invention is a nano-MgO; And petroleum solvents; Wherein the nano-MgO is contained in an amount of more than 0 and not more than 10 parts by weight based on 100 parts by weight of the petroleum solvent.
According to an embodiment of the present invention, the nano-MgO may include at least one selected from the group consisting of nanoparticles, nano-rods, nanosheets, and nanowires, and the size of the nano-MgO may be 1000 nm or less .
According to one embodiment of the present invention, the petroleum-based solvent is at least one selected from the group consisting of paraffinic hydrocarbons having 9 to 13 carbon atoms, naphthene hydrocarbons having 10 to 14 carbon atoms, and olefin hydrocarbons having 7 to 12 carbon atoms . ≪ / RTI >
According to an embodiment of the present invention, the composition for deoxygenation further comprises a fluorine-based solvent, and the petroleum-based solvent may be included in an amount of 1 to 30 parts by weight based on 100 parts by weight of the fluorine-based solvent.
According to another aspect of the present invention, there is provided a process for producing nano-MgO, And the nano MgO; And a petroleum-based solvent; Wherein the step of preparing the nanosheet MgO comprises the steps of preparing a reaction mixture in which an aqueous magnesium salt solution, an aqueous NaOH solution and an aqueous Na 2 CO 3 solution are mixed; Forming a magnesium hydroxide (Mg (OH) 2 ) hydrothermally treating the reaction mixture at a temperature of 100 ° C to 200 ° C and for 8 hours to 14 hours; Drying the magnesium hydroxide (Mg (OH) 2 ); And calcining the dried magnesium hydroxide (Mg (OH) 2 ) at a temperature of 300 to 600 DEG C for 2 to 6 hours; And a method for producing the composition for deoxygenation.
According to one embodiment of the present invention, the NaOH aqueous solution may be 0.1 M to 0.5 M, and the Na 2 CO 3 aqueous solution may be 0.1 M to 0.5 M.
According to an embodiment of the present invention, the magnesium salt may include at least one selected from the group consisting of halides, nitrates, nitrates, sulfates, sulfites, thiosulfates, phosphates, oxalates, carbonates and acetates .
According to still another aspect of the present invention, there is provided a deoxidizing composition for treating a composition for deoxidation treatment of the present invention on a surface of a substrate to be deoxidized at a temperature of from room temperature to 30 占 폚; To a deoxidation treatment method.
According to an embodiment of the present invention, the deoxidizing composition may be treated with 200 g to 500 g per kg of the substrate to be deoxidized.
INDUSTRIAL APPLICABILITY The present invention can provide a composition for deoxidation treatment having an excellent deoxidation performance and less occurrence of whitening.
The composition for deoxidation treatment according to the present invention is uniformly applied to the surface of a target substrate requiring deoxidation treatment, and the evaporation of the solvent can be accelerated to improve the efficiency of the deoxidation treatment process.
1 is a flow chart of a method for producing a composition for deoxidation treatment according to an embodiment of the present invention.
2 is a flowchart illustrating a method of manufacturing a composition for deoxygenation according to an embodiment of the present invention.
3 is a flowchart illustrating a deoxidation process using a deoxidizing composition according to an embodiment of the present invention.
4 shows the results of (a) TEM image, (b) particle size analysis and (c) BET graph of nano-MgO prepared according to Example 1 of the present invention.
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. Also, terminologies used herein are terms used to properly represent preferred embodiments of the present invention, which may vary depending on the user, intent of the operator, or custom in the field to which the present invention belongs. Therefore, the definitions of these terms should be based on the contents throughout this specification. Like reference symbols in the drawings denote like elements.
The present invention provides a composition for deoxidizing treatment, wherein the deoxidizing composition can prevent whitening after deoxidation and provide improved deoxidation performance.
According to an embodiment of the present invention, the composition for deoxygenation may include nano-MgO and a petroleum solvent.
In one embodiment of the present invention, the nano-MgO is uniformly dispersed in a solvent, adsorbed on the surface of the substrate to prevent accelerated deterioration of the substrate, high adsorption efficiency on the surface of the substrate to provide an excellent deoxidizing effect, The whitening phenomenon can be remarkably lowered. The nano-MgO is present in an amount of more than 0 and not more than 10 parts by weight based on 100 parts by weight of the total solvent of the composition or the petroleum solvent; Preferably from more than 0 to 5 parts by weight to obtain more effective deoxidation action; 0.05 to 5 parts by weight; 0.2 to 2 parts by weight; 0.2 to 1 part by weight. If the content of the nano-MgO exceeds 10 parts by weight, it may be difficult to disperse in the solvent of the nano-MgO, or an additive such as a surfactant may be added for dispersing, and an increase of the content of the nano- So that whitening may occur.
In one embodiment of the present invention, the nano-MgO may be at least one selected from the group consisting of nanoparticles, nano-rods, nanosheets, and nanowires, and may be a nanosheet for adsorbing efficiency on the substrate surface. The nano-MgO may have a size of 1000 nm or less, preferably 300 nm to 800 nm. When the nano-MgO is more than 1000 nm, the whitening phenomenon may be increased or the continuity of deoxidation may be lowered. The "size" may be indicative of the particle size in nanoparticles, nanorods, and nanosheets, and the diameter in nanowires.
In one example of the present invention, the nano-MgO is porous and may have a specific surface area of 150 m 2 / g to 300 m 2 / g, preferably 150 m 2 / g to 200 m 2 / g.
In one embodiment of the present invention, the petroleum-based solvent is a dispersion medium for dispersing the nano-MgO, and may be a carrier which carries the nano-MgO on the surface of the substrate during the deoxidation treatment to uniformly coat the nano-MgO. In addition, since the petroleum-based solvent rapidly evaporates in the base material during the deoxidation treatment to dry the base material, the process time in the deoxidation treatment can be shortened and the efficiency of the deoxidation process can be improved. The petroleum solvent may include at least one selected from the group consisting of paraffinic hydrocarbons having 9 to 13 carbon atoms, naphthenic hydrocarbons having 10 to 14 carbon atoms, and olefin hydrocarbons having 7 to 12 carbon atoms, Or a naphthene hydrocarbon having 10 to 12 carbon atoms. The petroleum-based solvent may contain various modified hydrocarbons such as the hydrocarbons cutting, isomerizing, reforming, hydrogenating, blending and the like. For example, YD-D30, YK-D40, and YK-D80, which are blended with a naphthenic solvent and a paraffin solvent; Isoparaffin-based solvents such as Isopar G, Isopar H; And paraffinic aliphatic solvents; and the like.
In one embodiment of the present invention, the petroleum solvent has a boiling point of 140 to 220 캜.
In one embodiment of the present invention, the composition for deoxygenation may further comprise a fluorine-based solvent. The fluorine-based solvent can further improve the deoxidation effect by increasing the interaction between the substrate and nano-MgO during the deoxidation treatment. The fluorine-based solvent includes 3 to 30 fluorine atoms and may include at least one member selected from the group consisting of hydrofluoroether, fluoroalkyl, perfluoroalkyl, and fluoroalkoxy, , And fluorine-containing solvents represented by the following formulas (1) to (4).
[Chemical Formula 1]
(2)
(3)
[Chemical Formula 4]
In one embodiment of the present invention, the petroleum solvent may be included in an amount of 1 to 30 parts by weight, preferably 1 to 20 parts by weight, based on 100 parts by weight of the fluorinated solvent. When it is contained in the range of the petroleum solvent, the nano-MgO is well transferred to the substrate during the deoxidation treatment by the petroleum solvent and the fluorine-based solvent, and an excellent deoxidation effect can be provided. It is possible to prevent deterioration of stability and to reduce an increase in manufacturing cost.
As an example of the present invention, the composition for deoxygenation treatment may further include additives applied in the technical field of the present invention, without departing from the object of the present invention, for example, perfluoropolyether, A flowable dispersant, a thickener, and the like, and the perfluoropolyether may be 5-Fomblin (perfluoropolyether) represented by the general formula (5).
[Chemical Formula 5]
(Wherein, x is 2 to 10 and y is an integer of 2 to 20).
In one embodiment of the present invention, the composition for deoxygenation may be a printed material such as a paper, a book, a magazine, a newspaper, a map, a photograph, a postcard, a copy paper, The substrate may be applied to a deoxidation treatment of a substrate applied for a substrate or printing, and the substrate may be a cellulose substrate.
The present invention provides a method for producing a composition for deoxygenation treatment according to the present invention, which will be described with reference to Figs. 1 and 2. Fig. 1 and 2 illustrate a flow chart of a method for producing a deoxidizing composition of the present invention according to an embodiment of the present invention. In FIG. 1, (S100) of nano-MgO and a step (S200) of preparing a deoxidizing composition.
In the step of preparing nano-MgO (S100), nano-MgO is produced by using magnesium salt. In the step of producing nano MgO (S100) of FIG. 2, , A forming step (S120) of magnesium hydroxide (Mg (OH) 2 ), a drying step (S130) and a baking step (S140).
In one embodiment of the present invention, the step (S110) of preparing the reaction mixture is a step of preparing a reaction mixture in which an aqueous magnesium salt solution, an aqueous NaOH solution and an aqueous Na 2 CO 3 solution are mixed. The magnesium salt aqueous solution may include at least one selected from the group consisting of halides, nitrates, nitrites, sulfates, sulfites, thiosulfates, phosphates, oxalates, carbonates and acetates, preferably carbonates. The magnesium salt aqueous solution may contain a magnesium salt at a concentration of 0.1 M to 1 M, preferably 0.1 M to 0.5 M. If the concentration of the aqueous solution is less than 0.1 M, a sufficient amount of nano-MgO can not be obtained If it exceeds 1 M, it may be difficult to obtain uniform nano MgO due to the increased concentration of magnesium salt, which is not preferable. The NaOH aqueous solution may include a concentration of 1 M to 0.5 M, and the Na 2 CO 3 aqueous solution may include a concentration of 0.1 M to 0.5 M. If the concentration of NaOH aqueous solution and Na 2 CO 3 aqueous solution is less than 0.1 M, the reaction with magnesium salt aqueous solution does not proceed sufficiently and synthesis of nano MgO may be difficult. If it exceeds 0.5 M, NaOH, Na 2 CO 3 and ions thereof may induce agglomeration of nano-MgO and the like, which may be difficult to obtain uniform nano-MgO particles, and nano-MgO particles may be formed in excess of 1 μm or more than 1.5 μm in size .
An example of the invention, the production phase of the reaction mixture (S110) is from about 1 hour to about 5 hours at room temperature, and preferably may be stirred for 1 hour to 3 hours, a magnesium salt during this stirring, NaOH and Na 2 CO 3 A precursor slurry solution containing the precursor particles formed by the reaction of the precursor slurry with the precursor may be formed.
An example of the invention, the forming step (S120) of magnesium hydroxide (Mg (OH) 2) is magnesium hydroxide (Mg (OH) 2) to be heat treating the reaction mixture prepared in step (S110) of the reaction mixture . The hydrothermal treatment may be performed at a temperature of 100 ° C to 200 ° C and for 8 hours to 14 hours, and when the temperature is within the above-mentioned time and temperature range, a uniform nano-sized magnesium hydroxide can be produced. The nano-sized magnesium hydroxide may be at least one selected from the group consisting of nanoparticles, nano-rods, nanosheets, and nanowires, and preferably nanosheets. The nano-magnesium hydroxide preferably has a particle diameter of 500 nm or less, preferably 1 nm to 300 nm, more preferably 10 nm to 200 nm; 10 nm to 100 nm; 10 nm to 40 nm.
An example of the present invention, the drying step (S130) is a step of drying after the filtered magnesium hydroxide (Mg (OH) 2) the magnesium hydroxide obtained in the forming step (S120) of (Mg (OH) 2), For example, it may be dried at a temperature of 50 to 100 DEG C for 4 to 8 hours, preferably within a range of 20 to 300 mmHg at this temperature and time.
In one embodiment of the present invention, the firing step S140 is a step of firing the magnesium hydroxide (Mg (OH) 2 ) dried in the drying step (S130) to form nano-MgO. The firing step (S140) can be performed in a conventional firing apparatus at a temperature of 200 ° C to 700 ° C for 2 hours to 6 hours. When the temperature and time are within the above range, a nanoscale porous MgO can be obtained, the occurrence of unreacted magnesium hydroxide (Mg (OH) 2 ) can be prevented at low temperature and time, and MgO aggregation can be prevented by increasing temperature and time to form nanopores .
As an example of the present invention, the nano-MgO obtained after the sintering step (S140) may be treated with a conventional powder post-treatment process used in the technical field of the present invention, for example, milling, sieving, and the like.
In one embodiment of the present invention, the deoxidation treatment composition preparation step (S200) is a step of blending the nano-MgO and the petroleum solvent to prepare a composition for deoxidation treatment. The manufacturing step (S200) may employ a conventional mixing method applied in the technical field of the present invention, for example, stirring, milling, and the like. The nano-MgO and petroleum-based solvent are as mentioned above in the present invention, and in the manufacturing step (S200), the above-mentioned fluorine-based solvent, additives and the like may be further mixed.
The present invention relates to a deoxidation treatment method using a composition for deoxidation treatment according to the present invention. The deoxidation treatment method may include a treatment step (S300) of a composition for deoxidation treatment. The deoxidation treatment composition treatment step (S300) is a step of treating the deoxidation treatment composition according to the present invention on the surface of the base material to be subjected to deoxidation treatment, and the treatment can be dipping, spraying, coating, Lt; / RTI > For example, the dipping may be dipped into 200 g to 500 g of the deoxidizing composition per kg of the substrate to be deoxidized. The deoxidation treatment object may include a cellulose base material which requires deoxidation treatment.
As an example of the present invention, the drying step (S400) may be further included after the treating step (S300). The drying step (S400) is a step of drying the deacidified base material, and may be performed at room temperature to 30 ° C, preferably at room temperature to 25 ° C, for 4 hours to 12 hours.
It will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the following claims It will be understood that the invention may be modified and varied without departing from the scope of the invention.
Example One
(One) Nanosheet MgO Synthesis of powder
An aqueous solution (120 mL) of 0.4 M (Mg (NO 3 ) 2 .6H 2 O) was added to a 0.4 M aqueous NaOH solution (240 mL) and a 0.4 M Na 2 CO 3 aqueous solution (120 mL) The mixture was stirred at room temperature, and then hydrothermal reaction was carried out at 140 DEG C for 12 hours in an autoclave, followed by filtration of the precipitate. The filtered precipitate was washed with EtOH, DIW and dried in a vacuum oven at 70 < 0 > C for 6 hours to obtain Mg (OH) 2 . Next, Mg (OH) 2 was placed in a furnace and calcined at 400 ° C (temperature raising rate: 5 ° C per minute) for 4 hours to obtain a nanosheet MgO powder having nanopores. The TEM image, particle size analysis and specific surface area of the MgO were measured and shown in FIG. Referring to FIG. 4, it can be seen that nanosheet MgO having a BET of 160 m 2 / g and an average particle size of 366 nm is synthesized.
(2) Deoxidation Preparation of composition for treatment
Nanosheet MgO (2 g) and petroleum solvent (800 g, product name: YK-D40) were mixed to prepare a deoxidizing composition.
Example 2
A composition for deoxidation treatment was prepared by mixing 2 g of the nanosheet MgO of Example 1, a petroleum solvent (40 g, YK-D40) and a fluorine-based solvent (760 g, methylnonafluorobutyl ether).
Comparative Example One
A composition for deoxidation treatment was prepared by mixing 2 g of the nanosheet MgO of Example 1 and 800 g of a fluorine-based solvent (methylnonafluorobutyl ether, 800 g).
Comparative Example 2
Nanoparticle MgO (particle diameter: 1180 nm) and a fluorine-based solvent (methylnonafluorobutyl ether, 800 g) were mixed to prepare a composition for deoxidation treatment.
Evaluation example One
Examples 1 and 2 (300 g of deoxidizing agent) and Comparative Examples 1 and 2 (300 g of deoxidizing agent) were dipped and subjected to deoxidation treatment on a cellulose substrate (600 g, manufactured by Bamboo paper, 1953).
(1) bleaching phenomenon
After 3 days of deoxidation treatment, the whitening phenomenon was visually observed.
(2) Whiteness
3 days after the deoxidation treatment, using the ISO 2470 standard method.
(3) MgO adsorption quantitative analysis
After the deoxidation treatment, the MgO content of the substrate was analyzed by ICP (inductively coupled plasma spectrometer, Thermo Corp. iCAP 6000).
effect
(In Table 1, when observed with the naked eye, x did not occur, < RTI ID = 0.0 >
As can be seen from Table 1, it was confirmed that the compositions for deoxidizing treatment including the nanosheet MgO and the petroleum solvent of Examples 1 and 2 exhibited low occurrence of bleaching phenomenon and high adsorption efficiency of MgO, have. In Comparative Example 1, the occurrence of bleaching phenomenon was confirmed to be low by applying the nanosheet MgO according to the present invention, and in Comparative Example 2 containing MgO of 1180 nm, occurrence of bleaching phenomenon And the degree of whiteness is increased after the deoxidation treatment. As described above, the present invention can provide a composition for deoxidation treatment which is excellent in deoxidation performance and has a low whitening phenomenon.
Claims (9)
Wherein the nano-MgO is contained in an amount of more than 0 and 10 parts by weight based on 100 parts by weight of the petroleum solvent,
The nano-MgO is porous and has a specific surface area of from 160 m 2 / g to 300 m 2 / g
Wherein the petroleum-based solvent comprises at least one selected from the group consisting of paraffinic hydrocarbons having 9 to 13 carbon atoms, naphthenic hydrocarbons having 10 to 14 carbon atoms and olefin hydrocarbons having 7 to 12 carbon atoms. / RTI >
The nano-MgO includes at least one selected from the group consisting of nanoparticles, nanorods, nanosheets, and nanowires,
Wherein the size of the nano-MgO is 1000 nm or less.
Wherein the composition for deoxygenation further comprises a fluorine-based solvent,
Wherein the petroleum-based solvent is contained in an amount of 1 to 30 parts by weight based on 100 parts by weight of the fluorine-based solvent.
The nano MgO; And a petroleum-based solvent;
Lt; / RTI >
The step of producing the nano-MgO may include:
A step of preparing a reaction mixture in which an aqueous magnesium salt solution, an aqueous NaOH solution and an aqueous Na 2 CO 3 solution are mixed;
Forming a magnesium hydroxide (Mg (OH) 2 ) hydrothermally treating the reaction mixture at a temperature of 100 ° C to 200 ° C and for 8 hours to 14 hours;
Drying the magnesium hydroxide (Mg (OH) 2 ); And
Calcining the dried magnesium hydroxide (Mg (OH) 2 ) at a temperature of 300 to 600 DEG C for 2 to 6 hours; The method for producing a composition for deacidifying paper according to claim 1,
The NaOH aqueous solution is 0.1 M to 0.5 M,
Wherein the aqueous solution of Na 2 CO 3 is 0.1 M to 0.5 M.
Wherein the magnesium salt comprises at least one member selected from the group consisting of a halide, a nitrate, a nitrite, a sulfate, a sulfite, a thiosulfate, a phosphate, an oxalate, a carbonate and an acetic acid salt. Way.
Wherein the composition for deoxidation treatment is treated with 200 g to 500 g per 1 Kg of the substrate to be deoxidized.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050042380A1 (en) * | 2002-01-15 | 2005-02-24 | Piero Baglioni | Basic suspension, its preparation and process for paper deacidification |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050042380A1 (en) * | 2002-01-15 | 2005-02-24 | Piero Baglioni | Basic suspension, its preparation and process for paper deacidification |
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