BIODEGRADABLE SUPERABSORPTION POLY(VINYLALCOHOL-GRAFT-POLYITACONIC ACID) COPOLYMER AND MANUFACTURING METHOD THEREOF
The present invention refers to a highly biodegradable polyvinyl alcohol graft copolymer and its synthetic method relates to graft - poly - the altruism cone it buys, more particularly biodegradable monomer number based on polyvinyl alcohol graft copolymer and its synthetic method to graft - poly the altruism cone it buys - highly biodegradable produced therewith are disclosed. High absorbent polymers have high absorption properties and can sufficiently endure the beautiful start added, horticultural, distribution materials, engineering, construction, medical, etc. used in toy to wide material. It is simultaneously have adhesive properties in particular with suitable Gel recent water-absorbing polymer material is utilized as an ongoing study of various electronic equipments component are disclosed. Synthesis of super absorbent polymer is, generally from crude oil such as acrylic resin is used as the crosslinked sodium polyacrylate positive number but persistent systems such as a disposable diaper when a high molecular weight acrylic material used, when wasted environment cause a tunneling effect etc. the door number. The biodegradable has recently, the use of cellulose derivative as a material absorption in particular carboxylic acid salt structure which attempted use for treatment of luck thread methyl cellulose at a reviewed and come. For example carboxymethylcellulose chemically bridging method, radiation cross-linking using magnetic bridging method is known. However, said number tank cost when used as starting materials techniques have made it difficult both cellulose derivative may be door number point, the combination of luck thread methyl cellulose ether bond regions between the bridging part and carboxylic filed by the stable door number point both in terms of the correction. On the other hand, cellulose, chitin, chitosan or the like biodegradable and absorption material absorption and acquisition rate comparable existing acrylic resin is disclosed but can be highly absorbent polymer synthesis method, ester cross-linking reaction to proceed selected by luck thread methyl cellulose (CMC) are extremely low in solubility in solvents such as natural material has been effect only a portion of the carboxylic acid. However, solubility of the solvent in addition long-time high temperature melting and discrete time right side the resulting resins of 5,000 ppm silicon low door been measured number. The cellulosic material not ether bonds high biodegradable ester bond to the succinic acid anhydride is disclosed but as bridging method using method, absorbent material can be obtained contained in carboxylic acid sodium salt content of a team, absorption speed cannot be obtained is crosslinked late been number point at the outside door. The, hygiene article can be applied to a crosslinked sodium polyacrylate material can be natural materials as an alternative to develop biodegradable, non-toxic, environment friendly satisfying desired polymer having high absorbent absorption and acquisition rate etc.. The purpose of the invention is for the door number and hydrogen gas, water soluble and biodegradable items and have environmental disposal, high absorbent in an absorption and acquisition rate or a reversed F. [...] number high absorbent polymers. In addition, same when subjected hygiene article, the plasma display panel is made of grape absorbent polymer can be [...] number for reducing skin irritation. In addition, by using a raw material cost, reducing number [...][...] rotational acceleration performance number number [...] useful and advantageous in absorbent material can be. According to one aspect of the present invention, polyvinyl alcohol; polyvinyl alcohol grafted poly the altruism cone it buys and said said polyvinyl alcohol crosslinked number (Grafting) bridges; including the altruism cone it buys a crosslinked polyvinyl alcohol graft copolymer poly - - number [...] substrate. The altruism cone it buys this said one end or both ends of said poly 2 at its one end coupled to the grafted polyvinyl alcohol can be disclosed. Said grafted polyvinyl alcohol in combination with said recorded proton of protective generated cation (- OH2+ ) And, said poly [...] generated by dissociating proton is carboxyl anion (- COO- ) Can be formed by ion with. The altruism cone it buys this formula 1 selected from at least one said poly vinyl adapted for use with a 1 to 3 can be radical polymerization. [Formula 1] [Formula 2] [Formula 3] In said formula 1 to 3, R1 And R2 Are selected from the same or different, each independently a hydrogen atom, C1 to C18 alkyl, C5 to C18 of hour click alkyl, or C6 to C18 alkoxy group of, R3 Coupled are each independently atoms, C1 to C18 alkylene, C5 to C18 of hour click alkyl [leyn, or C6 to C18 of it will be biting, [leyn among others. Said crosslinked number is a polycarboxylic acid anhydride can be a disclosed. The tetra car [lu luck thread it buys said number is 1, 2, 3, 4 - butane (BTCA) crosslinked 2 anhydride, 3, 3 ', 4, 4' - diphenyl sulfones 2 anhydride (DSDA) oligomer, the non-phenyl tetra car [lu luck thread it buys 2 anhydride (BPDA),Meso - butane - 1, 2, 3, 4 - tetracarboxylic acid 2 anhydride (Meso-a Butane-a 1, 2, 3, 4 a-tetracarboxylic Dianhydride),4, 4 '- [...] the anhydride which burns (4, 4' - Biphthalic Anhydride), 4, 4 '- (process flow five [lu child urination [tin) die the [phu the anhydride which burns (4, 4' - (Hexafluoroisopropylidene) diphthalic Anhydride), and 4, 4 '- oxy die [phu the anhydride which burns (4, 4' - Oxydiphthalic Anhydride) 1 be a selected at least one. Cross-linking said polyvinyl alcohol of hydroxyl groups can be formed by combination method it is held the draw giga said said poly the car [lu luck thread it buys anhydrous scandal. Said irradiated crosslinked polyvinyl alcohol graft copolymer to said polyvinyl alcohol substituted acetyl - poly - the altruism cone it buys, and polyester, an acrylic group and an urethane 1 further comprises at least one can be selected. The molecular weight of said polyvinyl alcohol is 500 to 1,000,000 (Mw) implementation being. The altruism cone it buys a highly crosslinked polyvinyl alcohol copolymer poly - said - be a graft Machine crosslinked polyvinyl alcohol graft copolymer can be biodegradable poly - - the altruism cone it buys. The other according to one aspect of the present invention, said absorbent material including the altruism cone it buys copolymer crosslinked polyvinyl alcohol graft - poly - number [...] substrate. According to one aspect of another one of the present invention, (a) polyvinyl alcohol, itaconic, neutralizing step number and a solvent mixed solution mixing tank number; and (b) cross-linking number disclosure number and adding said mixed solution by mixing the altruism cone it buys copolymer crosslinked polyvinyl alcohol reacting poly - step number bath - graft; - the altruism cone it buys a manufacturing method including a crosslinked polyvinyl alcohol graft copolymers of poly - number [...] substrate. Said disclosure number is peroxide, azo compound, azo bis isobutyrate methacrylonitrile (AIBN) comprises a persulfate, with sulfuric acid ammonium, and [...] with sulfuric acid natrium, hydrogen peroxide (H2 O2 ), Selected from at least one [...] hydroperoxide (tertiobutylhydroperoxide) be a 1. Neutralizing said number is non-metallic hydroxide, ammonium hydroxide, alkylamines including organic base compound and a hydroxy group including at least one organic compound selected from be a 1. Said reaction mass ratio 99:1 to 1:99 polyvinyl alcohol and lighter the cone it buys implementation being. In step (b), can be further comprises a catalyst. Said catalyst is 4 - methyl aminopyridine (4 a-dimethylaminopyridine, DMAP) implementation being. In step (a), said solvent be a polar organic solvent. Said polar organic solvent is N - methylpyrrolidone (N provided Methylpyrrolidone), N, N - dimethylacetamide (N, N provided Dimethylacetamide), dimethyl sulfoxide (Dimethyl sulphoxide), dimethyl formaldehyde (Dimethylformamide), tetrabutylammonium fluoride (Tetra non-nbutylammonium fluoride, TBAF) be a selected at least one lithium chloride and sodium citrate 1. The present invention refers to water soluble and biodegradable items and have environmental disposal, high absorbent in an absorption and acquisition rate can be [...] number high absorbent polymers. In addition, the number of non-toxic high pressure liquid coolant by using a raw material, the same hygiene article when subjected, for reducing skin irritation of grape can be. In addition, by using a raw material cost, number [...][...] rotational acceleration can be advantageous in reducing performance number. Figure 1 shows a schematic of the present invention also polyvinyl alcohol prepared by the number from the altruism cone it buys copolymer exhibits expected graft - poly -. Figure 2 the present invention graft copolymer of polyvinyl alcohol prepared by the number from the altruism cone it buys graft - poly - 0. 9% NaCl aqueous solution (Swelling)/swelling of a photograph before polarized beam are disclosed. Figure 3 lighter nose nick obstetrics crosslinked polyvinyl alcohol polyvinyl alcohol reaction mass ratio according to of the present invention graft - poly - the altruism cone it buys copolymer repair performance and yield graph indicating are disclosed. Figure 4 lighter [...] crosslinked polyvinyl alcohol/polyvinyl alcohol and a polycarboxylic acid anhydride reactant drainage according to of the present invention graft - poly - the altruism cone it buys copolymer absorptive and yield graph indicating are disclosed. Figure 5 dehydrogenation catalyst (DMAP) crosslinked polyvinyl alcohol graft - poly - dimethyl amino blood position basic content according to of the present invention indicating the altruism cone it buys copolymer of absorbent and yield graph are disclosed. Figure 6 FT-a IR components are disclosed. Figure 7 differential scanning calorimetry analysis graph indicating (Differential Scanning Calorimetry, DSC) are disclosed. The present invention refers to conversion may have various in the embodiment can apply various bar, and in the embodiment detailed description are specific to exemplify the broadcast receiver. However, the present invention is defined with respect to a particular embodiment form which are not included, all the range of the present invention idea and techniques, including the water to replacement should understood to evenly. In the present invention specifically described publicly known techniques related description is the subject matter of invention description can be decided to be a haze if omit other. In addition, other components or folder on any component that when "formed" "laminated" referred, to form front or on the surface of the other components or may be laminated or attached directly to the one, might lead to other components will further intermediate will be present. It is apparent that a single representation of the differently in order not providing language translators, comprising plurality of representation. In the application, the term "comprising" or "having disclosed" specification of articles feature, number, step, operation, components, parts or specify a combination not present included, another aspect of one or more moveable number, step, operation, component, component or a combination of these is understood to presence of or additionally pre-times those possibility should not number. Hereinafter, crosslinked polyvinyl alcohol graft copolymer of the present invention are disclosed diffuse to the altruism cone it buys - poly -. The present invention refers to polyvinyl alcohol; polyvinyl alcohol grafted poly the altruism cone it buys and said said polyvinyl alcohol crosslinked number (Grafting) bridges; including the altruism cone it buys a crosslinked polyvinyl alcohol graft copolymer poly - - number [...] substrate. The altruism cone it buys at its one end said one end or both ends of said poly 2 polyvinyl alcohol grafted coupled can be disclosed. Is formed at the grafted polyvinyl alcohol in combination with said proton of protective generated cation (- OH2+ ) And, said poly [...] generated by dissociating proton is carboxyl anion (- COO- ) Can be formed by ion with. Said at least one selected from formula 1 to 3 poly the altruism cone it buys 1 can be adapted for use with a vinyl radical polymerization. [Formula 1] [Formula 2] [Formula 3] In said formula 1 to 3, R1 And R2 Are selected from the same or different, each independently a hydrogen atom, C1 to C18 alkyl, C5 to C18 of hour click alkyl, or C6 to C18 alkoxy group of, R3 Coupled are each independently atoms, C1 to C18 alkylene, C5 to C18 of hour click alkyl [leyn, or C6 to C18 of it will be biting, [leyn among others. Said number can be a polycarboxylic acid anhydride which is crosslinked, preferably 1, 2, 3, 4 - butane the tetra car [lu luck thread it buys anhydride (BTCA) 2, 3, 3 ', 4, 4' - diphenyl sulfones 2 anhydride (DSDA) oligomer, the non-phenyl tetra car [lu luck thread it buys 2 anhydride (BPDA),Meso - butane - 1, 2, 3, 4 - tetracarboxylic acid 2 anhydride (Meso-a Butane-a 1, 2, 3, 4 a-tetracarboxylic Dianhydride),4, 4 '- [...] the anhydride which burns (4, 4' - Biphthalic Anhydride), 4, 4 '- (process flow five [lu child urination [tin) die the [phu the anhydride which burns (4, 4' - (Hexafluoroisopropylidene) diphthalic Anhydride), and 4, 4 '- oxy die [phu the anhydride which burns (4, 4' - Oxydiphthalic Anhydride) etc. disclosed. Cross-linking said polyvinyl alcohol of hydroxyl groups can be formed by combination method it is held the draw giga said said poly the car [lu luck thread it buys anhydrous scandal. Said irradiated crosslinked polyvinyl alcohol graft copolymer to said polyvinyl alcohol substituted acetyl - poly - the altruism cone it buys, and polyester, an acrylic group and an urethane can be like. The molecular weight of 500 to 1,000,000 said polyvinyl alcohol (Mw) implementation being. The altruism cone it buys a highly crosslinked polyvinyl alcohol graft copolymer may be poly - said -, can be biodegradable. The altruism cone it buys crosslinked polyvinyl alcohol copolymer including absorbent material of the present invention graft - poly - number [...] substrate. Hereinafter, crosslinked polyvinyl alcohol graft poly the altruism cone it buys copolymer of the present invention - by the barrier metals diffuse to the manufacturing method. First, polyvinyl alcohol, Itaconic, Mixing and solvent mixed solution number (step a) neutralizing number high pressure liquid coolant therein. Neutralizing said number is from a non-metallic hydroxide, ammonium hydroxide, alkylamines including organic base compound and be a hydroxy group including organic compounds and the like. Said portion having a carboxyl group is neutralized and neutralize number, any base neutralized acidic monomer, for example monovalent inorganic base, e.g. M+ [OH- ]x (Wherein M sodium, potassium, lithium selected from cationic moieties (moiety) is number represents x [...] having neutralizing salt value) can be subjected to treatment with a qualitatively. In addition, non - metal hydroxide, as well as ammonium hydroxide for example, alkylamines, such as monomethyl amine, dimethyl amine, trimethyl amine, mono ethyl amine, diethanol amine, tertiary amine such as triethylamine organic base compound and/or a source of hydroxyl groups (OH) 1 including organic compound containing functional group can be used herein are contemplated. Adjusts the amount of neutralizing the altruism cone it buys can be [...] of present in the less than fully neutralized poly herein to number. For example, when the cone it buys representative monomeric itaconic, fully neutralized the molar number 2 will require each mol itaconic neutralization can be understand. I.e., the number 1 and 2 mole sodium hydroxide will be a fully neutralized [...] ight itaconic, any amount of sodium hydroxide is the desired result of less than 2 mole number [...] neutralizing portion will. Divalent base when using lighter the cone it buys neutralize, selected divalent base to neutralize completely the cone it buys the amount of itaconic itaconic each mol divalent base 1. 0 Mole will continue to communicate, to neutralize portion for, divalent base capable of neutralizing itaconic monomer portion is applied so that less than 1 mole that recognition will. Said solvent be a polar organic solvent. Preferably N - methylpyrrolidone (N provided Methylpyrrolidone), N, N - dimethylacetamide (N, N provided Dimethylacetamide), dimethyl sulfoxide (Dimethyl sulphoxide), dimethyl formaldehyde (Dimethylformamide), tetrabutylammonium fluoride (Tetra-a n a-butylammonium. Fluoride TBAF), lithium chloride and the like disclosed. If amounts of soluble lithium chloride can be increased disclosed. Next, said mixed solution Number crosslinked and A disclosure number By adding the altruism cone it buys copolymer crosslinked polyvinyl alcohol reacting poly - number (step b) graft - high pressure liquid coolant therein. Said disclosure number is peroxide, azo compound, azo bis isobutyrate methacrylonitrile (AIBN) comprises a persulfate, with sulfuric acid ammonium, and [...] with sulfuric acid natrium, hydrogen peroxide (H2 O2 ), Such as may be [...] hydroperoxide (tertiobutylhydroperoxide), basins and range of the present invention are not correct. Said reaction mass ratio 99:1 to 1:99 polyvinyl alcohol and lighter the cone it buys, preferably 50:1 to 1:50, more preferably 10:1 to 1:10 implementation being. In step (b), further catalyst included, preferably 4 - methyl aminopyridine (4 a-dimethylaminopyridine, DMAP) implementation being. In step (b), polycarboxylic acid anhydride can have 1, 2, 3, 4 - butane the tetra car [lu luck thread it buys 2 anhydride (BTCA), the intermolecular ester bond (Intermolecular Ester Linkage) generally can be performed in two stages. First, one of the polycarboxylic acid anhydride water molecules can be formed by an annular acid anhydride intermediate carboxylic acid anhydride luck practical technique. Next, for anhydride to form hydroxyl intermediates can be between reaction has taken place. The, number crosslinked graft through dehydrogenation and capsule are basic catalyst to compensation in an as can be. In step (b), said inter-itaconic acid in said acid copolymer and a crosslinking polyvinyl alcohol reacting ester can be further performs. Said cross-reactive ester obtained methanol reactants, such as organic solvents acetone precipitation of the aqueous alkaline solution for neutralization by a plurality of hierarchies. Is subjected to a neutralization reaction by, carboxyl converted to a carboxylic acid, a carboxylic acid ester-exhibit the luck thread it buys with the salt absorbent serves the role of highly cross-linked three-dimensional crosslinked structure having biodegradable copolymer can be achieved. [In the embodiment] Hereinafter, for example of the present invention preferred embodiment for illustrating the substrate. But for an exemplary of the present invention is defined in which provided the range are not correct. In the embodiment 1 1) Itaconic graft (or cross linked) and polymerization Agitator, nitrogen distributor, moving nitrogen substituted with 500 ml glass containers (NMP) solvent (IA) methyl itaconic 50g and pillow money N - 4. 5G, polyvinyl alcohol (PVA) 0. 5G number mixture by mixing at ambient temperature and high pressure liquid coolant, caustic soda 1. 25G after 30 minutes followed by adding nitrogen mixed solution was continuously neutralize number high pressure liquid coolant. Said heating temperature of 60 °C mix solution stirring time was 1. Then, polymerization in [...] disclosure number 0 (potassium persulfate). 01G, butane - 1, 2, 3, 4 - tetracarboxylic acid anhydride (BTCA) manufactured by a polycarboxylic acid anhydride and a basic catalyst (DMAP) adding 5g d amino blood it will knock down [tin 1g, in time 60 °C 6 polymer containing a brown gel-type polymer are obtained. Said particulate polymer from the surface of a gel-type polymer obtained sufficiently acetone was obtained, improves the same longitudinally formed in the middle of a stainless tray 80 °C hot air heated in an oven to 15 time very dry. Said dried comminuted particulate polymer using a crusher, the ASTM standard for classifying 300 to 600 micro m standard [...] cross-linked polyvinyl alcohol graft copolymer having a particle size ranging the altruism cone it buys - poly - 3. 1G stingy. 2) Repairing ability are The altruism cone it buys copolymer crosslinked polyvinyl alcohol - final obtained from the water 200 ml 0 into and out of the graft - poly-like extension. 9 Wt % NaCl aqueous solution so that the NaCl followed by quantifying said after dissolving the particulate polyvinyl alcohol graft - poly - the altruism cone it buys graft copolymer 0. 2G was putting to a dried liquor. Then, NaCl aqueous solution contained in a beaker to deposits and 30 minutes, 3 minutes from the surface such as centrifuge using a simple lever attached to a stand-alone number put after the tea bag including an weight-insoluble accurately adjustable according to formula 1 (Swelling Ratio) his repair capability calculating display, [Formula 1] Repair capability (SR)=(Wt - W0)/W0 Wt=30 minutes 0. 9 Wt % NaCl weight of SAP swell in aqueous solutions W0=weight of initially charging SAP This method the altruism cone it buys copolymer crosslinked polyvinyl alcohol graft - measured by the repair capability (Swelling Ratio) is poly - 9 min. In the embodiment 2 Itaconic 4. 5G and polyvinyl alcohol 0. 5G itaconic 3 instead. 5G and polyvinyl alcohol 1. 5G [...] number in the range of 0.1 in the embodiment 1 and the same method to the altruism cone it buys copolymer crosslinked polyvinyl alcohol graft - poly - number was high pressure liquid coolant. The yield copolymer prepared by the number 2. 8G, the repair capability (Swelling Ratio) 11 min. In the embodiment 3 Itaconic 4. 5G and polyvinyl alcohol 0. 5G itaconic 2 instead. 5G and polyvinyl alcohol 2. 5G [...] number in the range of 0.1 in the embodiment 1 and the same method to the altruism cone it buys copolymer crosslinked polyvinyl alcohol graft - poly - number was high pressure liquid coolant. The yield of the copolymer prepared by the number 2. 9G, the repair capability (Swelling Ratio) 13 min. In the embodiment 4 Itaconic 4. 5G and polyvinyl alcohol 0. 5G itaconic 1 instead. 5G and polyvinyl alcohol 3. 5G [...] number in the range of 0.1 in the embodiment 1 and the same method to the altruism cone it buys copolymer crosslinked polyvinyl alcohol graft - poly - number was high pressure liquid coolant. The yield of the copolymer prepared by the number 3. 1G, repair capability (Swelling Ratio) is 15 min. In the embodiment 5 Itaconic 4. 5G and polyvinyl alcohol 0. 5G itaconic 0 instead. 5G and polyvinyl alcohol 4. 5G [...] number in the range of 0.1 in the embodiment 1 and the same method to the altruism cone it buys copolymer crosslinked polyvinyl alcohol graft - poly - number was high pressure liquid coolant. The yield of the copolymer prepared by the number 2. 9G, repair capability (Swelling Ratio) is 10 min. Table 1 to 5 in the embodiment 1 according to the crosslinked polyvinyl alcohol - - itaconic copolymer (IA) prepared by the number polyvinyl alcohol (PVA) and poly the altruism cone it buys graft reaction mass ratio, repairing ability, revealing the yield are disclosed. In the embodiment 6 Butane - 1, 2, 3, 4 - tetracarboxylic acid anhydride (BTCA) instead of a number in the range of 0.1 and the same method in the embodiment 4 5g 15g [...] crosslinked polyvinyl alcohol graft copolymer poly - the altruism cone it buys his number - the high pressure liquid coolant. The yield of the copolymer prepared by the number 3. 8G, the repair capability (Swelling Ratio) 11 min. In the embodiment 7 Butane - 1, 2, 3, 4 - tetracarboxylic acid anhydride (BTCA) instead of a number in the range of 0.1 and the same method in the embodiment 4 5g 25g [...] crosslinked polyvinyl alcohol graft copolymer poly - the altruism cone it buys his number - the high pressure liquid coolant. The yield of the copolymer prepared by the number 4. 5G, repair capability (Swelling Ratio) is min 9. In the embodiment 8 Butane - 1, 2, 3, 4 - tetracarboxylic acid anhydride (BTCA) instead of a number in the range of 0.1 and the same method in the embodiment 4 5g 50g [...] crosslinked polyvinyl alcohol graft copolymer poly - the altruism cone it buys his number - the high pressure liquid coolant. The yield of the copolymer prepared by the number 3. 7G, the repair capability (Swelling Ratio) 5 min. In the embodiment 9 Butane - 1, 2, 3, 4 - tetracarboxylic acid anhydride (BTCA) instead of a number in the range of 0.1 and the same method in the embodiment 4 5g 65g [...] crosslinked polyvinyl alcohol graft copolymer poly - the altruism cone it buys his number - the high pressure liquid coolant. The yield of the copolymer prepared by the number 3. 5G, repair capability (Swelling Ratio) is 3 min. The blend to table 2 BTCA reaction weight drainage according to in the embodiment 4 and, in the embodiment 6 according to the altruism cone it buys copolymer crosslinked polyvinyl alcohol prepared by the number 9 - to organize his repair capability and yield contains poly - graft are disclosed. In the embodiment 10 Dimethylamino pyridine (DMAP) 1g 0 instead. 5G [...] the same method in the embodiment 4 to a number in the range of 0.1 and crosslinked polyvinyl alcohol graft copolymer poly the altruism cone it buys his number - - high pressure liquid coolant. The yield of the copolymer prepared by the number 3. 7G, the repair capability (Swelling Ratio) 11 min. In the embodiment 11 Dimethylamino pyridine (DMAP) instead of a number in the range of 0.1 and the same method in the embodiment 4 [...] 1g 2g the crosslinked polyvinyl alcohol graft copolymer poly - the altruism cone it buys his number - the high pressure liquid coolant. The yield of the copolymer prepared by the number 4. 2G, repair capability (Swelling Ratio) is min 9. In the embodiment 12 Dimethylamino pyridine (DMAP) instead of a number in the range of 0.1 and the same method in the embodiment 4 [...] 1g 3g crosslinked polyvinyl alcohol graft copolymer poly - the altruism cone it buys his number - the high pressure liquid coolant. The yield of the copolymer prepared by the number 3. 8G, the repair capability (Swelling Ratio) 5 min. In the embodiment 4 to the table 3 and, in the embodiment 10 to 12 according to the amount of DMAP to organize his repair capability and yield contains biodegradable high absorbent polymers are disclosed. [Test example] Test example 1: Swelling (Swelling) before and after Cross-linked Polyvinyl alcohol -Graft-The altruism cone it buys poly Copolymer Image 0 Copolymer prepared by the number according to Figure 2 in the embodiment 1. Even though the swelling of a 9% NaCl aqueous solution which represents Image are disclosed. The reference 2 also, moisture to the naked eyes were insoluble copolymer of the present invention. Thus, humidification of copolymer of the present invention is excellent in the ability to determine the other. Test example 2: Lighter cone obstetrics According to polyvinyl alcohol reaction mass ratio Cross-linked The altruism cone it buys copolymer repair capability and yield graph analysis - poly - polyvinyl alcohol graft 5 Figure 3 in the embodiment 1 according to repair capability and yield graph copolymer prepared by the number represented are disclosed. The reference also 3, with polyvinyl alcohol (PVA) (IA) itaconic when reaction ratio 3:7, most excellent maintenance capability yield were confirmed. The, maintenance capability to obtain lighter cone obstetrics polyvinyl alcohol copolymer excellent yield highly reacting to the clip proper mass ratio be are disclosed. Test example 3: Itaconic And polyvinyl alcohol blend Polycarboxylic acid Anhydride reactant according to drain Cross-linked Polyvinyl alcohol -Graft-The altruism cone it buys poly Copolymer repair capability and yield graph analysis Figure 4 in the embodiment 4 and, in the embodiment 6 according to repair capability and yield graph copolymer prepared by the number 9 represented are disclosed. The reference also 4, reaction of a polycarboxylic acid anhydride obtained is reduced rate making sure that the drainage is enhanced increases and to selectively, with polyvinyl alcohol (PVA) of itaconic (IA) when a multiple of a reaction of a polycarboxylic acid anhydride blend 5, maintenance capability crucial were confirmed. The, maintenance capability yield excellent and highly absorbent copolymer to be used to obtain the appropriate amount of polycarboxylic acid anhydride to the clip thereto. Test example 4: Of dimethylamino pyridine (DMAP) Reaction amount according to Cross-linked The altruism cone it buys copolymer repair capability and yield graph analysis - poly - polyvinyl alcohol graft Figure 5 in the embodiment 4 and, in the embodiment 10 according to repair capability and yield graph copolymer prepared by the number represented by 12 are disclosed. The reference also 5, dimethylamino pyridine 1g basic dehydrogenation catalysts when used, repair capability most transmission option. In addition, when used in 2g dimethylamino pyridine, highest yield were confirmed. The, maintenance capability yield excellent and highly absorbent copolymer to obtain the appropriate amount of dehydrogenation using basic catalysts to the clip thereto. Test example 5: FT-a IR spectral analysis Figure 6 of the present invention crosslinked polyvinyl alcohol graft - poly - the altruism cone it buys polyvinyl alcohol copolymers, poly the altruism cone it buys, IPN hydrogel FT-a IR components are disclosed. The polyvinyl alcohol (PVA) and water of reference also 6 hydroxyl carboxylic anhydrides are magnetic dicarboxylates through crosslinking reaction can verify was formed crosslinked polyvinyl alcohol ester, poly (PIA) also simultaneously generated the altruism cone it buys Macromoleculars polyvinyl alcohol and polyvinyl alcohol backbone structure with an intermolecular (Intermolecular) and hydroxyl groups in the molecule to give no bond formation (Intramolecular) interaction between a polymer-based information database interpenetrating polymer network (Interpenetrating hydrogel networks, IPN) is produced within the entire polymer composite formed were confirmed. Test example 6: Differential scanning calorimetry (Differential Scanning Calorimetry, DSC) Graph analysis Figure 7 of the present invention crosslinked polyvinyl alcohol graft - poly - the altruism cone it buys polyvinyl alcohol copolymers, poly the altruism cone it buys, DSC graph indicating IPN (Interpenetrating hydrogel networks) hydrogel are disclosed. In DSC Q10 prepared by the number TA Instrument Korea (model name) of 0.50 to DSC analysis, sample has a weight 7 provided 8mg, measuring temperature 40 provided 300 °C, 10/min rate of temperature nitrogen gas atmosphere conditions were measured. The reference also 7, crosslinked polyvinyl alcohol (PVA)- graft copolymer of the present invention poly - carboxylic acid anhydride of the altruism cone it buys polyvinyl alcohol hydroxyl group through ester crosslinked polyvinyl alcohol molecules formed between between cross-reactive ester can verify that it has, poly (PIA) polymer (Macromoleculars) also simultaneously generated the altruism cone it buys polyvinyl alcohol and polyvinyl alcohol backbone structure with an intermolecular (Intermolecular) and hydroxyl groups in the molecule to give no bond formation (Intramolecular) interaction between a polymer-based information database interpenetrating polymer network (Interpenetrating hydrogel networks, IPN) is produced within the entire polymer composite formed were confirmed. Or more, of the present invention preferred embodiment detailed but for example, the present invention refers to said in the embodiment is not limited to, within the range of technical idea of the present invention process from several modified by person with skill in the art it was found. The present invention provides a crosslinked polyvinyl alcohol-graft-polyitaconic acid copolymer, which comprises: polyvinyl alcohol; polyitaconic acid grafted to the polyvinyl alcohol and a crosslinking agent crosslinked with the polyvinyl alcohol. The present invention can provide a method for producing a biodegradable highly water-absorbing polymer having water-solubility and biodegradability, less environmental burden due to disposal, and having high water absorption and absorption rate. Also, since a non-toxic raw material is used to produce the crosslinked polyvinyl alcohol-graft-polyitaconic acid copolymer, when applied to sanitary articles, harm to a human body does not exist and skin irritation can be reduced, and by using low-cost raw materials, it is possible to develop a product which is advantageous in terms of price competitiveness by reducing manufacturing cost. COPYRIGHT KIPO 2018 Polyvinyl alcohol; polyvinyl alcohol grafted poly the altruism cone it buys and said said polyvinyl alcohol crosslinked number (Grafting) bridges; and, said grafted polyvinyl alcohol in combination with said recorded proton of protective generated cation (- OH2 + ) And, said poly [...] generated by dissociating proton is carboxyl anion (- COO- ) Formed by crosslinked polyvinyl alcohol - bonds with a non-graft - poly the altruism cone it buys copolymer. According to Claim 1, 2 at its one end said one end or both ends of said poly the altruism cone it buys this polyvinyl alcohol crosslinked polyvinyl alcohol grafted coupled to features - graft - poly the altruism cone it buys copolymer. According to Claim 2, said at least one selected from formula 1 3 1 to the altruism cone it buys this poly vinyl adapted for use with a radical polymerization crosslinked polyvinyl alcohol - characterized the altruism cone it buys these poly - graft copolymer. [Formula 1] [Formula 2] [Formula 3] In said formula 1 to 3, R1 And R2 Are selected from the same or different, each independently a hydrogen atom, C1 to C18 alkyl, C5 to C18 of hour click alkyl, or C6 to C18 alkoxy group of, R3 Coupled are each independently atoms, C1 to C18 alkylene, C5 to C18 of hour click alkyl [leyn, or C6 to C18 of it will be biting, [leyn among others. According to Claim 1, characterized in that said number is manufactured by a polycarboxylic acid anhydride crosslinked polyvinyl alcohol crosslinked poly - the altruism cone it buys - graft copolymer. According to Claim 4, number 1, 2, 3, 4 - butane (BTCA) said cross-linking is the tetra car [lu luck thread it buys 2 anhydride, 3, 3 ', 4, 4' - diphenyl sulfones 2 anhydride (DSDA) oligomer, the non-phenyl tetra car [lu luck thread it buys 2 anhydride (BPDA),Meso - butane - 1, 2, 3, 4 - tetracarboxylic acid 2 anhydride (Meso-a Butane-a 1, 2, 3, 4 a-tetracarboxylic Dianhydride),4, 4 '- [...] the anhydride which burns (4, 4' - Biphthalic Anhydride), 4, 4 '- (process flow five [lu child urination [tin) die the [phu the anhydride which burns (4, 4' - (Hexafluoroisopropylidene) diphthalic Anhydride), and 4, 4 '- oxy die [phu the anhydride which burns (4, 4' - Oxydiphthalic Anhydride) is not less than 1 species selected from crosslinked polyvinyl alcohol graft - poly - characterized the altruism cone it buys copolymer. According to Claim 4, said it is held draw the car [lu luck thread it buys anhydrous scandal (anhydro) cross-linking said polyvinyl alcohol of hydroxyl groups formed from combination method is characterized in that said poly crosslinked polyvinyl alcohol - graft - poly the altruism cone it buys copolymer. According to Claim 1, said irradiated crosslinked polyvinyl alcohol graft copolymer to said polyvinyl alcohol substituted acetyl - poly - the altruism cone it buys, and polyester, an acrylic group and an urethane 1 characterized further including at least one selected from crosslinked polyvinyl alcohol - graft - poly the altruism cone it buys copolymer. According to Claim 1, molecular weight of 500 to 1,000,000 (Mw) said polyvinyl alcohol is crosslinked polyvinyl alcohol graft - poly - characterized in the altruism cone it buys copolymer. According to Claim 1, said highly crosslinked polyvinyl alcohol graft copolymer is crosslinked poly - - the altruism cone it buys characterized the altruism cone it buys polyvinyl alcohol - poly - graft copolymer. According to Claim 9, said crosslinked polyvinyl alcohol crosslinked biodegradable graft copolymer characterized the altruism cone it buys - - poly - poly - the altruism cone it buys polyvinyl alcohol graft copolymer. According to Claim 1 - including the altruism cone it buys crosslinked polyvinyl alcohol graft copolymer poly - absorbent material. Classification In the embodiment 1 In the embodiment 2 In the embodiment 3 In the embodiment 4 In the embodiment 5 IA: PVA reaction mass ratio 9:1 7:3 5:5 3:7 1:9 Maintenance capability 9 11 13 15 10 Yield (g) 3. 1 2. 8 2. 9 3. 1 2. 9 Experiment number In the embodiment 4 In the embodiment 6 In the embodiment 7 In the embodiment 8 In the embodiment 9 (IA and PVA mixture) for drainage reaction BTCA 1 3 5 10 13 Maintenance capability 15 11 9 5 3 Yield (g) 3. 1 3. 8 4. 5 3. 7 3. 5 Classification In the embodiment 4 In the embodiment 10 In the embodiment 11 In the embodiment 12 Amount (g) DMAP 1 0. 5 2 3 Maintenance capability 15 11 9 5 Yield (g) 3. 1 3. 7 4. 2 3. 8
