TWI432507B - Manufacturing method of superabsorbent resins - Google Patents

Description

Method for preparing super absorbent resin

The invention relates to a method for preparing a resin, in particular to a method for preparing a super absorbent resin, which is suitable for use in the technical fields of agriculture, forestry and the like.

Superabsorbent resin is a polymer material with high water absorption and water retention. It has been widely used in agriculture, forestry, medical, petroleum, chemical, chemical, building materials, food and other fields. It is used in superabsorbent resins for agriculture and forestry. There are widespread problems such as high cost and less additional functionality.

The method for producing a super absorbent resin for agriculture and forestry is mainly characterized in that an unsaturated ethylenic monomer (such as acrylic acid, acrylate, acrylamide, etc.) is used as a main raw material, and a crosslinking agent and a starter are added to carry out a copolymerization crosslinking reaction. It is then obtained by cutting, granulating, pulverizing, surface crosslinking, surface treatment and the like. However, when a hydrogel prepared from such a highly water-absorptive resin is used for a water-retaining application such as plant growth or long-distance transportation of flowers (for example, Japanese Patent Laid-Open No. SHO 63-68026), there is a possibility that the plant does not promote germination and Shortcomings such as root growth.

Chinese patent CN 101948695A discloses a plant rooting water retaining agent which is prepared by adding phytonutrients to carboxymethyl starch to prepare a super absorbent resin to solve the above problem of not promoting plant growth, but the disclosed super absorbent resin does not have good colloid strength. It is prone to decomposition under prolonged use, and it is not possible to supply the water required for plant germination and growth for a long time.

Therefore, it has been sought to develop a method for producing a highly water-absorptive resin which has good durability and can effectively promote the germination and root growth of plant seeds, and is currently sought by the industry.

Therefore, in view of the foregoing problems, the object of the present invention is to provide a process for producing a superabsorbent resin comprising polymerizing an unsaturated monomer component and drying to obtain a resin, and the resin, a phytonutrient (plant nutrient) mixed with a cross-linker and surface cross-linked to cause the phytonutrient to be bonded to the resin through a chemical bond, wherein the unsaturated monomer component comprises a neutral portion neutralized The carboxyl group-containing ethylenic monomer, and the carboxyl group-containing ethylenic monomer neutralized by the base accounts for 30 to 65 mol% of the carboxyl group-containing ethylenic monomer.

The effect of the invention is that through the action of the crosslinking agent and the phytonutrient, the obtained super absorbent resin has better durability (slow decomposition rate) than before, and can effectively promote plant germination (long-term water supply) ) and root growth can promote the development of process technology for high-absorbent resins for agriculture and forestry.

The superabsorbent resin of the present invention comprises the steps of: polymerizing an unsaturated monomer component, drying to obtain a resin, and mixing the resin, a phytonutrient with a crosslinking agent, and surface crosslinking to make the plant The nutrient is bonded to the resin through a chemical bond, wherein the unsaturated monomer component comprises an empirically partially neutralized carboxyl group-containing ethylenic monomer, and the carboxyl group-containing ethylenic monomer neutralized by the base accounts for 30 to 65 mol% of the carboxyl group-containing ethylenic monomer.

Preferably, the carboxyl group-containing ethylenic monomer may be selected from the group consisting of acrylic acid, methacrylic acid, maleic acid, fumaric acid, crotonic acid, and itaconic acid. ) or a combination thereof.

If the ratio of the carboxyl group-containing ethylenic monomer to the neutralization by the alkali is too low, the water-absorbent ratio of the obtained superabsorbent resin is not good, and a large amount of use is required in the application to achieve a predetermined effect, and the acidic disadvantageous plant is obtained. Growth; if the ratio of the neutralization is too high, the alkalinity of the resulting highly water-absorbent resin is also unfavorable for plant growth. In a specific embodiment of the invention, the carboxyl group-containing ethylenic monomer neutralized by the base accounts for 35 to 60 mol% of the carboxyl group-containing ethylenic monomer.

Preferably, the unsaturated monomer component further comprises an amidino group-containing ethylenic monomer. The mercapto group-containing ethylenic monomer can enhance the absorption capacity of the superabsorbent resin when the water quality is hard. Preferably, the acyl group-containing vinyl monomer selected from acrylamide, N - vinyl as acetamide (N -vinyl acetamide), methyl acrylamide (methacrylamide), N, N - dimethyl N , N- dimethyl methacrylamide or a combination thereof. In a particular embodiment of the invention, the guanamine containing olefinic monomer is acrylamide.

Preferably, the unsaturated monomer component further comprises an inorganic salt. The inorganic salt is effective for improving plant growth performance. Preferably, the inorganic salt is selected from the group consisting of an acid phosphate, a calcium salt, a magnesium salt, an iron salt, a sulfate salt, or a combination thereof. In a particular embodiment of the invention, the inorganic salt is a combination of potassium dihydrogen phosphate, sodium dihydrogen phosphate, calcium nitrate, magnesium sulfate, and iron sulfate. If the amount of the inorganic salt used is too small, the effect is not good; if it is used in an excessive amount, the cost is increased. Preferably, the weight ratio of the superabsorbent resin to the inorganic salt ranges from 1000:1 to 100:1.

The ethylenic monomer of the present invention may be added with a radical polymerization crosslinking agent in the reaction monomer solution before the radical polymerization reaction, so that the obtained super absorbent resin has an appropriate degree of crosslinking, thereby adjusting its Mechanical and processing properties. The polymerization crosslinking agent may be selected from: (1) a compound having two or more unsaturated double bonds, for example: N , N '-bis(2-propenyl)amine, N , N '-methyl group N , N '-methylenebisacrylamide, N , N '-methyl dimethyl methacrylate, propylene acrylate, ethylene glycol diacrylate, polyethylene glycol diacrylate, ethylene glycol Dimethacrylate, polyethylene glycol dimethacrylate, glycerol triacrylate, glyceryl trimethacrylate, ethoxylated glycerol triacrylate or trimethacrylate, ethoxylated trishydroxyl Ethoxylated trimethylolpropane trimethacrylate, ethoxylated trimethylolpropane triacrylate (ethoxylated TMPTA), trimethylolpropane trimethacrylate, trimethylolpropane Triacrylate, N , N , N -tris(2-propenyl)amine, ethylene glycol diacrylate, polyoxyethylene glyceryl triacrylate, diethyl polyoxyethylene glyceryl triacrylate, dipropylene triethylene glycol Ester, etc.; (2) has two or two More than one epoxy group compound, for example, glycerol polyethylene glycol triglycidyl ether, sorbitol polyglycidyl ether, polyglycerol polyglycidyl ether, ethylene glycol diglycidyl ether, diethylene glycol Diglycidyl ether, polyethylene glycol diglycidyl ether, diglycerol polyglycidyl ether, and the like. The above polymerization crosslinking agent may be used singly or in combination of two or more. In a particular embodiment of the invention, the polymerization crosslinking agent is ethoxylated trimethylolpropane triacrylate.

If the amount of the crosslinking agent used in the polymerization reaction is too small, the resulting highly water-absorptive resin is soft and sticky, which is disadvantageous for subsequent mechanical processing; if the polymerization crosslinking agent is used in an excessive amount, it is lowered. Water absorption properties of superabsorbent resins. Preferably, the polymerization crosslinking agent is used in an amount ranging from 0.001 to 5 wt% (100 wt% based on the total solid portion of the reactant), more preferably 0.01 to 3 wt%.

The radical initiator of the present invention for use in the radical polymerization may be optionally a thermally decomposable initiator, and the suitable thermally decomposable initiator comprises a peroxide such as hydrogen peroxide or Di- tert -butyl peroxide (DTBP), persulfate, etc., and azo compounds such as 2,2'-azobis(2-amidinopropane) di-salt Acid salt [2,2'-azobis(2-amidinopropane) dihydrochloride, AAPH], 2,2'-azobis(2-methylpropionitrile), azobisisobutyronitrile, AIBN], etc. A redox type initiator such as bisulfite, thiosulfate, L-ascorbic acid, ferrous salt or the like can be used. In a particular embodiment of the invention, the starter is a combination of L-ascorbic acid, sodium persulfate and 2,2'-azobis(2-amidinopropane) dihydrochloride.

If the amount of the initiator used is too small, the reaction rate is too slow; if the amount of the initiator used is too large, it is difficult to control the reaction. Preferably, the initiator is used in an amount ranging from 0.001 to 10% by weight (based on the weight of the carboxyl group-containing ethylenic monomer neutralized by the base to 100% by weight), more preferably 0.01 to 5% by weight.

The polymerization of the ethylenic monomer of the present invention can be carried out in a conventional batch reaction vessel, a conveyor belt reactor, or a kneader having a uniaxial or biaxial.

Preferably, the superabsorbent resin may be cut into a resin powder having a volume of 10 cm ³ or less by a pulverizer before the drying step of the method of the present invention, and then subjected to screening. The size of the resin powder to be screened is preferably less than 2 cm. Since the resin powder having a size larger than 2 cm is likely to be poor in heat conduction during subsequent drying, the residual monomer content is high and the physical properties are not good, so Return to the shredder for shredding. Further, the more concentrated the particle size distribution of the superabsorbent resin powder, the better the physical properties of the superabsorbent resin after the subsequent drying, and the time and temperature for controlling the drying.

Preferably, the drying temperature of the process of the present invention ranges from 100 to 180 °C. If the drying temperature is lower than 100 ° C, the process will be too time consuming; if the drying temperature is higher than 180 ° C, the crosslinking agent will crosslink prematurely, making it difficult to be effective due to excessive crosslinking in the drying process. Remove residual monomers. In a particular embodiment of the invention, the drying temperature is 130 °C.

The superabsorbent resin has a uniform bridging structure inside, and is generally further processed on the surface of the superabsorbent resin in order to improve its quality (for example, increasing the absorption rate, increasing the strength of the colloid, increasing the anti-caking property or improving the liquid permeability). In the co-processing, the surface cross-linking treatment is carried out by using a cross-linking agent capable of bonding with a resin. The conventionally disclosed treatment method is, for example, dispersing a superabsorbent resin and a cross-linking agent in an organic solvent for surface crosslinking treatment ( For example, Japanese Patent Laid-Open No. Sho 56-131608, JP-A-57-44627, JP-A-58-42602, and JP-A-58-117222, use of an inorganic powder to mix a crosslinking agent solution into a superabsorbent resin (for example, Japanese Patent Special) Kaisho 60-163956 and JP-A-60-255814) and a crosslinking agent are added to a superabsorbent resin, followed by steam treatment (for example, Japanese Patent Laid-Open No. Hei 1-113406).

The crosslinking agent to which the present invention is applied is a polyfunctional crosslinking agent capable of bonding to a carboxyl group on the resin and capable of being bonded to the phytonutrient. Preferably, the crosslinking agent is selected from the group consisting of aqueous polyhydric alcohols, aqueous polyamines or polyepoxy compounds. The polyol can be selected from: glycerol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, 1,4-butanediol, trimethylolpropane, sorbitol (sorbitol) And the like; the polyamine can be selected from: ethylenediamine, diethylenediamine, triethylenediamine, polyethylenediamine; the polyepoxy compound can be selected from: sorbitol polyglycidyl ether, polyglycerol polycondensation Glycerol ether, ethylene glycol diglycidyl ether, diethylene glycol diglycidyl ether, polyethylene glycol diglycidyl ether, diglycerin polyglycidyl ether, and the like. The above crosslinking agents may be used singly or in combination of two or more. Preferably, the crosslinking agent is an aqueous polyol solution. In a particular embodiment of the invention, the crosslinking agent is an aqueous solution of glycerol. If the amount of the crosslinking agent used is too small, the nutrient cannot be effectively cross-linked with the resin; if the amount of the crosslinking agent used is too large, the water absorption efficiency of the obtained super absorbent resin is lowered. Preferably, the crosslinking agent is used in an amount ranging from 0.001 to 10% by weight (based on 100% by weight of the resin powder), more preferably from 0.005 to 5% by weight.

Preferably, the phytonutrient is a nutrient selected from the group consisting of promoting plant germination or root growth. Preferably, the phytonutrient comprises at least one vitamin E. Preferably, the vitamin E is selected from the group consisting of thiamine (vitamin B1), riboflavin (vitamin B2), nicotinic acid (vitamin B3), adenine (adenine, Ade, vitamin B4). ), pantothenic acid (vitamin B5), pyridoxine (vitamin B6), biotin (vitamin B7) or folic acid (vitamin B9). In a particular embodiment of the invention, the phytonutrient is adenine, pyridoxine or folic acid. More preferably, the phytonutrient is pyridoxine. If the amount of the phytonutrient used is too small, the effect is not good; if it is used in an excessive amount, the cost is increased. Preferably, the weight ratio of the superabsorbent resin to the phytonutrient ranges from 1000:1 to 10:1.

The invention is further described in the following examples, but it should be understood that these examples are for illustrative purposes only and are not to be construed as limiting.

<Example 1>

The method for producing the super absorbent resin of Example 1 comprises the steps of:

(1) Slowly add 20.8 g of 48 wt% aqueous sodium hydroxide solution to an ice bath containing 30 g of acrylic acid (sourced from Taiwan Plastics Industry Co., Ltd.), 3 g of acrylamide (purchased from Jingming Chemical Co., Ltd.) and 32.4 g of deionized water in a 100 mL Erlenmeyer flask was used for neutralization to obtain a reactive monomer solution; 60 mol% of the acrylic acid was neutralized to be an acrylate.

(2) Further, 0.046 g of ethoxylated TMPTA was added to the above reaction monomer solution and stirred to obtain a reaction liquid, and the temperature was maintained at about 20 °C.

(3) Add 0.016 g of L-ascorbic acid, 0.2 g of sodium persulfate and 0.2 g of 2,2'-azobis(2-amidinopropane) dihydrochloride in the above reaction solution to initiate the reaction, and the reaction is about 1 A resin was obtained after an hour.

(4) The resin was cut into a resin powder having a size of 2 mm or less by a cutter mill (purchased from Rixi Co., model 200).

(5) The above resin powder was dried at 130 ° C for 2 hours, and a resin powder having a size ranging from 0.1 to 0.85 mm was sieved by a sieve.

(6) Take 10 g of the resin powder of the above step (5), and add 0.01 g of adenine (purchased from Nanjing Xiangzhao Industry and Trade Co., Ltd.) and 0.4 g of glycerol/water (weight ratio of 1:1). The mixed solution was mixed with a mixer and then heated at 160 ° C for 30 minutes.

<Example 2>

The preparation of Example 2 was the same as that of Example 1 except that the adenine of the step (6) was changed to pyridoxine (purchased from ACROS).

<Example 3>

Except that the amount of the aqueous sodium hydroxide solution of the step (1) was changed to 12.2 g (35 mol% of the acrylic acid was neutralized to be an acrylate) and the amount of the pyridoxine of the step (6) was changed to 0.1 g. The production method of Example 3 was the same as that of Example 1.

<Example 4>

The preparation method of Example 4 was the same as that of Example 3 except that the amount of pyridoxine in the step (6) was changed to 1.0 g.

<Example 5>

In addition to the reaction monomer solution in the step (1), 0.13 g of potassium dihydrogen phosphate, 0.20 g of sodium dihydrogen phosphate, 0.13 g of calcium nitrate, 0.26 g of magnesium sulfate, 0.001 g of boric acid, 0.07 g of iron sulfate and 0.001 g are additionally added. The production method of Example 5 was the same as that of Example 2 except for α-naphthylacetic acid.

<Example 6>

The procedure of Example 6 was the same as in Example 5 except that the amount of the aqueous sodium hydroxide solution of the step (1) was changed to 12.2 g (35 mol% of the acrylic acid was neutralized to be an acrylate).

<Example 7>

The preparation method of Example 7 was the same as that of Example 1 except that 0.01 g of adenine in the step (6) was changed to 0.5 g of folic acid (purchased from Jingming Chemical Co., Ltd.).

<Example 8>

The preparation of Example 8 was the same as that of Example 1 except that 0.01 g of adenine in the step (6) was changed to 0.5 g of thiamine (purchased from Jingming Chemical Co., Ltd.).

<Example 9>

The production method of Example 9 was the same as that of Example 1 except that 0.01 g of adenine in the step (6) was changed to 0.5 g of riboflavin (purchased from Jingming Chemical Co., Ltd.).

<Example 10>

The preparation method of Example 10 was the same as that of Example 1 except that 0.01 g of adenine in the step (6) was changed to 0.5 g of nicotinic acid (purchased from Jingming Chemical Co., Ltd.).

<Example 11>

The production method of Example 11 was the same as that of Example 1 except that 0.01 g of adenine in the step (6) was changed to 0.5 g of pantothenic acid (purchased from Jingming Chemical Co., Ltd.).

<Example 12>

The preparation of Example 12 was the same as that of Example 5, except that 0.01 g of pyridoxine of the step (6) was changed to 0.5 g of biotin (purchased from Jingming Chemical Co., Ltd.).

<Measurement of colloidal strength>

The invention utilizes a constant temperature and humidity device to make the super absorbent resin in a high temperature and high humidity environment to simulate the decomposition of the super absorbent resin in the soil environment. The method for determining the strength of the colloid of the present invention is as follows: 1.000±0.001 g of the super absorbent resin is slowly added to 30 mL of 0.9 wt% physiological saline containing 0.005 wt% of L-ascorbic acid, and stirred on an electromagnetic stirrer for 1 minute. After it is expanded into a hydrocolloid, it is placed in a constant temperature and humidity device (purchased from Xinqianxiang Company, model AJH-80, test conditions are 90 ° C and 70% relative humidity) for 3 hours, and then determined by STEVENS colloid strength. The instrument (purchased from Quanhua Precision Co., model CNSFARNELL TA1000) measures its colloidal strength (sets the drop speed of the suspension column tube to 1.0 mm/sec and the drop distance to 25 mm). The above procedure was repeated, but the aqueous colloid was placed in a thermo-hygrostat for 24 hours, and then the colloidal strength was measured.

<Water absorption ratio measurement>

The method for measuring the water absorption ratio of the present invention is as follows: X g superabsorbent resin is placed in a mesh bag of mesh of 250 mesh, and the bag is immersed in deionized water for 60 minutes, and then the bag is taken out to Allow to stand in the air for 15 minutes, and finally measure the mass (Y g); in addition, a set of mesh bags without superabsorbent resin is also immersed in deionized water, and the weight (Z g) is left blank after hanging according to the above steps. Subtract and repeat 3 sets of tests to find the average. The water absorption ratio of the super absorbent resin in the net bag can be calculated according to the following formula.

Water absorption ratio of super absorbent resin =

<plant growth situation>

The method for measuring plant growth in the present invention is as follows: 1 g of a highly water-absorbent resin is added to 100 g of deionized water and stirred for 1 minute, and the water-absorbent superabsorbent resin is taken out and placed into 10 plant seeds (radish seeds, Mung bean and cabbage seeds were purchased from the farmers' seedlings company. The plants were incubated at 2000 lux and 25 °C for 2 days, and the number of plant seeds was recorded. The above procedure was repeated, but 10 plant seeds were placed in the water-absorbent superabsorbent resin for 7 days, and then the average value of the shoot root length was measured.

The superabsorbent resins obtained in the above Examples 1 to 12 were each subjected to the above-mentioned measurement of colloidal strength, water absorption ratio measurement, and plant growth, and the main components, the neutralization ratio, and the measurement results are shown in Table 1 below.

<Comparative Example 1>

Comparative Example 1 was prepared in the same manner as in Example 1 except that adenine was not added.

<Comparative Example 2>

Comparative Example 2 was prepared in the same manner as in Example 2 except that adenine was not added.

<Comparative Example 3>

Comparative Example 3 was prepared in the same manner as in Comparative Example 1, except that the amount of the aqueous sodium hydroxide solution of the step (1) was changed to 24.3 g (where 70 mol% of acrylic acid was neutralized to be an acrylate).

<Comparative Example 4>

Comparative Example 4 was prepared in the same manner as in Comparative Example 1, except that the amount of the aqueous sodium hydroxide solution of the step (1) was changed to 6.9 g (wherein 20 mol% of acrylic acid was neutralized to be an acrylate).

<Comparative Example 5>

The superabsorbent resin of Comparative Example 5 was prepared according to the method of Example 1 of Chinese Patent No. CN 101948695 A: 1 kg of carboxymethyl starch, 200 ppm of naphthaleneacetic acid (NAA), 200 ppm of acetic acid (IAA), 500 ppm. Thiamine, 300 ppm of nicotinic acid, 10 ppm of adenine phosphate, 1 g of nitrogen fertilizer, 1 g of phosphate fertilizer, and 1 g of potassium fertilizer were uniformly mixed to obtain a super absorbent resin of Comparative Example 5.

The superabsorbent resins obtained in the above Comparative Examples 1 to 5 were each subjected to the above-described measurement of colloidal strength, water absorption ratio measurement, and plant growth, and the ratios and measurement results are shown in Table 2 below.

From the results of Table 1 and Table 2, we can find:

(1) Colloidal strength: The colloidal strength of the superabsorbent resin of Examples 1 to 12 was more than 200 g after 3 hours in a high-temperature and high-humidity environment, and the colloidal strength after 24 hours was all 169 g or more, showing the present invention. The obtained highly water-absorptive resin is not easily decomposed in a high-temperature and high-humidity soil environment and can be maintained for more than one day, presumably due to the addition of a crosslinking agent and surface crosslinking in the manufacturing process thereof, resulting in an increase in colloidal strength; In other words, the superabsorbent resin of Comparative Example 5 uses carboxymethyl starch as a main raw material in the production process thereof, and has no added crosslinking agent, so that the colloidal strength after 3 hours in a high-temperature and high-humidity environment is under When it is reduced to 80g, the colloidal strength after 24 hours is further reduced to 30g, the decomposition rate is too fast to supply water for a long time, and the water absorption ratio is remarkably low.

(2) Plant growth conditions: After cultivating for 2 days and 7 days, respectively, the radish seeds of the super absorbent resin of Examples 1 to 12 were germinated and the growth length of the roots were 7 and 7.7, respectively. More than cm; 2 mung beans, the number of germination and the growth length of the roots are 6 and 6.4 cm respectively; 3 cabbage seeds, the number of germination and the growth length of the roots are 5 and 4.7 cm respectively, indicating the invention The highly water-absorptive resin can promote plant germination and root growth, presumably due to the addition of phytonutrients during its manufacture. It is worth mentioning that the addition of an inorganic salt in the production process of the superabsorbent resin of Example 6 (the neutralization ratio is 35 mol%) can further enhance plant growth. In comparison, the number of germination and the growth length of the seedling root of the radish seed of the super absorbent resin of Comparative Examples 1 to 5 were 6 and 4.8 cm, respectively; 2 the number of peas, the number of germination and the root of the seedling The growth lengths were 5 and 4.1 cm respectively; the number of germination and the growth length of the seedling roots of 3 cabbage seeds were 5 and 4.7 cm, respectively, indicating that these superabsorbent resins have less effect on promoting plant germination and growth. It is worth mentioning that the neutralization ratios of the superabsorbent resins of Comparative Examples 3 and 4 are 70 mol% and 20 mol%, respectively, which have a significant negative effect on plant germination and growth; the superabsorbent resin of Comparative Example 5 is manufactured therein. In the process, carboxymethyl starch is used as a main raw material, and no colloidal agent is added, and the colloidal strength of the superabsorbent resin cannot be maintained, so that the water required for germination and growth of the plant cannot be supplied for a long period of time.

In summary, the method for preparing the superabsorbent resin of the present invention can effectively improve the durability of the superabsorbent resin obtained therefrom, and the highly water-absorbent resin obtained by the invention can promote seed germination and plant root growth.

The above is only the preferred embodiment and the specific examples of the present invention, and the scope of the invention is not limited thereto, that is, the simple equivalent change according to the scope of the invention and the description of the invention. And modifications are still within the scope of the invention patent.

Claims (7)

A superabsorbent resin comprising: polymerizing an unsaturated monomer component and drying to obtain a resin; and mixing the resin, a phytonutrient with a crosslinking agent, and surface crosslinking, The phytonutrients are linked to the resin through a chemical bond; wherein the unsaturated monomer component comprises a carboxyl group-containing ethylenic monomer neutralized by a base, and the carboxyl group-containing ethylenic monomer neutralized by the base accounts for 30 to 65 mol% of the carboxyl group-containing ethylenic monomer; the crosslinking agent is an aqueous solution of glycerin. The method for producing a super absorbent resin according to claim 1, wherein the phytonutrient comprises at least one vitamin B. The method for producing a super absorbent resin according to claim 2, wherein the vitamin B is selected from the group consisting of thiamine, riboflavin, nicotinic acid, adenine, pantothenic acid, pyridoxine, biotin or folic acid. . The method for producing a super absorbent resin according to claim 3, wherein the vitamin B is selected from the group consisting of adenine, pyridoxine or folic acid. The method for producing a super absorbent resin according to claim 3, wherein the vitamin B is pyridoxine. The method for producing a super absorbent resin according to claim 1, wherein the weight ratio of the resin to the phytonutrient is in the range of 1000:1 to 10:1. The method for producing a super absorbent resin according to claim 1, wherein the unsaturated monomer component further comprises an inorganic salt.