Anti-aging latex and processing technology thereof

Abstract

The invention relates to an anti-aging latex which is prepared from the following components: styrene-butadiene latex, 5-amino-1, 3-indoline-2-ketone, diphenyl acetic anhydride, dichloromethane, triethylamine, a NaOH solution, an antioxidant and a preservative. The invention also relates to a processing technology of the anti-aging latex. The styrene-butadiene latex adopted in the invention has good anti-aging performance; the nitrogen heterocyclic ring carried by the 5-amino-1, 3-indolin-2-one can capture free radicals, prevent the free radicals from further initiating fracture and crosslinking of polymer chains, and delay aging; the preparation method comprises the following steps: adding diphenyl acetic anhydride to carry out acylation reaction with amino of 5-amino-1, 3-indoline-2-ketone, and hydrolyzing by using a NaOH solution to obtain carboxylic acid, so that the obtained product carries a side chain with large steric hindrance, oxygen molecules are effectively inhibited from approaching parts which are easily attacked, and the aging process is slowed down; the carboxyl group can increase the polarity, reduce the density of electron cloud in the ring or homogenize the electron cloud, and improve the aging resistance.

Description

Technical Field

[0001] The present application relates to the technical field of latex processing, and in particular to an aging-resistant latex and a processing technology thereof. Background Art

[0002] Products made with latex as raw material are called latex products, common ones include sponges, gloves, toys, rubber hoses, latex pillows, etc.; however, some latex will age during use, seriously affecting the service life of the latex products.

[0003] Therefore, since some existing latexes are prone to aging under the action of ultraviolet rays and oxygen in the air, which affects the service life of latex products, the existing latexes still need to be improved. Summary of the invention

[0004] In order to improve the aging resistance of latex and extend the service life of latex products, the present application provides an aging-resistant latex and a processing technology thereof.

[0005] In the first aspect, the present application provides an anti-aging latex adopting the following technical solution: An anti-aging latex comprises the following components in parts by weight: 60-70 parts of styrene-butadiene latex; 8-10 parts of 5-amino-1,3-dihydroindolin-2-one; 5-6 parts of diphenylacetic anhydride; 4-5 parts of dichloromethane; 0.8-1 part of triethylamine; 3-4 parts NaOH solution; 1-2 parts antioxidants; 0.5-0.6 parts preservatives.

[0006] By adopting the above technical scheme, styrene-butadiene latex has good anti-aging properties; the nitrogen heterocycle carried by 5-amino-1,3-dihydroindole-2-one has a strong free radical capture ability, which can capture free radicals generated by photochemical reactions or thermal decomposition, thereby preventing these free radicals from further initiating the breakage and crosslinking of polymer chains, and effectively delaying the aging process of the material; diphenylacetic anhydride is added to the amino group of 5-amino-1,3-dihydroindole-2-one for acylation reaction, and a small amount of triethylamine is used to promote the reaction and neutralize the generated acid, which is then hydrolyzed with NaOH solution to obtain carboxylic acid, and the product obtained carries a side chain with large steric hindrance, which can effectively inhibit oxygen molecules from approaching vulnerable sites and slow down the aging process; at the same time, an electron-withdrawing substituent carboxyl group is formed to increase polarity, which can reduce the electron cloud density in the ring or make it uniform, improve the stability of the latex, and achieve the purpose of effectively improving the aging resistance.

[0007] Preferably, by weight, the mixture further comprises 4-5 parts of trans-1-nonenylboric acid, 2-3 parts of ethyl 2,2-dimethyl-4-pentenoate, 0.4-0.5 parts of azobisisobutyronitrile and 6-8 parts of anhydrous ethanol.

[0008] By adopting the above technical scheme, azobisisobutyronitrile is used as an initiator to cause trans-1-nonenylboric acid and ethyl 2,2-dimethyl-4-pentenoate to undergo olefin polymerization to form a copolymer. The bond energy of the formed copolymer cross-linked product is larger and the aging resistance is better.

[0009] Preferably, the invention further comprises 1-2 parts of 2'-hydroxy-4'-methylvalerophenone and 0.2-0.3 parts of p-toluenesulfonic acid, based on weight.

[0010] By adopting the above technical scheme, under the catalysis of p-toluenesulfonic acid, the boric acid group in the reaction product of trans-1-nonenylboronic acid and ethyl 2,2-dimethyl-4-pentenoate further reacts with the hydroxyl group of 2'-hydroxy-4'-methylvalerophenone to form a boron ester bond. Through the greater steric hindrance provided by 2'-hydroxy-4'-methylvalerophenone, the presence of the aromatic ring can provide additional electron density and steric protection, thereby improving the aging resistance of the latex.

[0011] Preferably, the preparation method of the antioxidant is: by weight, dissolving 3-4 parts of butylated hydroxyanisole in 4-5 parts of toluene, adding 1-2 parts of benzyl(chloromethyl)dimethylsilane, adding 0.1-0.2 parts of dibutyltin dilaurate under stirring conditions, stirring and reacting at 60-70° C. for 1-2 hours; washing with acetone and filtering.

[0012] By adopting the above technical scheme, through the grafting reaction of benzyl (chloromethyl) dimethyl silane and butyl hydroxyanisole, steric hindrance is increased in the antioxidant, which can reduce the interaction between the free radicals formed in the oxidation process and the active center of the antioxidant, making the antioxidant more stable and not easily consumed, thereby extending the aging time of the latex.

[0013] Preferably, the mass fraction of the NaOH solution is 75%; and the preservative is preservative BIT20.

[0014] In a second aspect, the present application provides a processing technology for aging-resistant latex, which adopts the following technical solution: A processing technology for aging-resistant latex comprises the following steps: Dissolve 5-amino-1,3-dihydroindole-2-one in dichloromethane, add diphenylacetic anhydride and triethylamine, and stir at 30-40°C for 2-3h; then add NaOH solution, heat to 50-60°C and stir to obtain product A; The styrene-butadiene rubber latex, the product A, an antioxidant and a preservative are blended to obtain a finished latex product.

[0015] Preferably, the method further comprises the following steps: dissolving 4-5 parts of trans-1-nonenylboric acid, 2-3 parts of ethyl 2,2-dimethyl-4-pentenoate and 0.4-0.5 parts of azobisisobutyronitrile in 6-8 parts of anhydrous ethanol, stirring and heating to 60-65° C. under N2 environment, reacting for 2-3 hours to obtain a mixture B; further adding 1-2 parts of 2'-hydroxy-4'-methylvaleriophenone and 0.2-0.3 parts of p-toluenesulfonic acid, maintaining 60-65° C., reacting for 1-1.5 hours to obtain a mixture C; The styrene-butadiene latex, the product A, the mixture C, the antioxidant and the preservative are blended to obtain a finished latex product.

[0016] In summary, this application includes the following beneficial technical effects: Styrene-butadiene latex has good anti-aging properties; the nitrogen heterocycle carried by 5-amino-1,3-dihydroindole-2-one has a strong free radical capture ability, which can capture free radicals generated by photochemical reactions or thermal decomposition, thereby preventing these free radicals from further inducing the breakage and crosslinking of polymer chains, effectively delaying the aging process of the material; diphenylacetic anhydride is added to the amino group of 5-amino-1,3-dihydroindole-2-one for acylation reaction, and a small amount of triethylamine is used to promote the reaction and neutralize the generated acid, and then a NaOH solution is used to hydrolyze the carboxylic acid. The product obtained carries a side chain with large steric hindrance, which can effectively inhibit oxygen molecules from approaching vulnerable sites and slow down the aging process; at the same time, an electron-withdrawing substituent carboxyl group is formed to increase polarity, which can reduce the electron cloud density in the ring or make it uniform, improve the stability of the latex, and achieve the purpose of effectively improving the anti-aging properties; Using azobisisobutyronitrile as an initiator, trans-1-nonenylboronic acid and ethyl 2,2-dimethyl-4-pentenoate undergo olefin polymerization to form a copolymer, and the resulting copolymer cross-linked product has a larger bond energy and better aging resistance. Under the catalysis of p-toluenesulfonic acid, the boric acid group in the reaction product of trans-1-nonenylboronic acid and ethyl 2,2-dimethyl-4-pentenoate further reacts with the hydroxyl group of 2'-hydroxy-4'-methylvalerophenone to form a boron ester bond. The presence of the aromatic ring can provide additional electron density and steric protection through the greater steric hindrance provided by 2'-hydroxy-4'-methylvalerophenone, thereby improving the aging resistance of the latex. By grafting benzyl (chloromethyl) dimethyl silane with butyl hydroxyanisole, steric hindrance is added to the antioxidant, which can reduce the interaction between the free radicals formed during the oxidation process and the active center of the antioxidant, making the antioxidant more stable and less likely to be consumed, thereby extending the aging time of the latex. DETAILED DESCRIPTION

[0017] The present application is described in further detail below.

[0018] In the present application, styrene butadiene latex is styrene butadiene latex 106#, brand F0603, item number HK00188M, pH value 6.0-9.0, viscosity <300mPa·S, provided by Jining Huakai Resin Co., Ltd.; 5-amino-1,3-dihydroindole-2-one, CAS number: 20876-36-2; diphenylacetic anhydride, CAS number: 1760-46-9; butylated hydroxyanisole, CAS number: 25013-16-5, provided by Hubei Changjiu New Material Technology Co., Ltd.; benzyl (chloromethyl) dimethyl silane, CAS No.: 5356-99-0; preservative BIT20 was provided by Nanjing Xinyi Synthetic Technology Co., Ltd.; trans-1-nonenylboric acid, CAS No.: 57404-77-0, was provided by Zhengzhou Alpha Chemical Co., Ltd.; 2,2-dimethyl-4-pentenoic acid ethyl ester, CAS No.: 86549-27-1, was provided by Nanjing Pop Biopharmaceutical Research and Development Co., Ltd.; 2'-hydroxy-4'-methylvaleriophenone, CAS No.: 173851-66-6, was provided by Hubei Guoyun Furui Technology Co., Ltd.

[0019] Unless otherwise specified, the raw materials used in the following embodiments can be obtained from common commercial sources. Example

[0020] Example 1: This example discloses an aging-resistant latex and a processing technology thereof; an aging-resistant latex comprising the following components: styrene-butadiene latex, 5-amino-1,3-dihydroindole-2-one, diphenylacetic anhydride, dichloromethane, triethylamine, NaOH solution, an antioxidant and a preservative; the mass fraction of the NaOH solution is 75%; the preservative is the preservative BIT20, and the content of each component is shown in Table 1 below.

[0021] The preparation method of the antioxidant is as follows: by weight, 3 parts of butylated hydroxyanisole are dissolved in 4 parts of toluene, 1 part of benzyl(chloromethyl)dimethylsilane is added, 0.1 part of dibutyltin dilaurate is added under stirring conditions, and the mixture is stirred and reacted at 60° C. for 1 hour; the mixture is washed with acetone and filtered.

[0022] A processing technology for aging-resistant latex comprises the following steps: Dissolve 5-amino-1,3-dihydroindole-2-one in dichloromethane, add diphenylacetic anhydride and triethylamine, and stir at 30°C for 2h; then add NaOH solution, heat to 50°C and stir to obtain product A; The styrene-butadiene rubber latex, the product A, an antioxidant and a preservative are blended to obtain a finished latex product.

[0023] Infrared spectrum test of product A: at 1650-1667cm -1C=O stretching vibration appears at 1540-1572cm -1 NH bending vibration peak appears, 1230-1260cm -1 CN stretching vibration peak appears; at 1450-1600cm -1 The absorption peak of benzene ring appears, indicating the occurrence of reaction.

[0024] Example 2: This example discloses an aging-resistant latex and a processing technology thereof; an aging-resistant latex comprising the following components: styrene-butadiene latex, 5-amino-1,3-dihydroindole-2-one, diphenylacetic anhydride, dichloromethane, triethylamine, NaOH solution, an antioxidant and a preservative; the mass fraction of the NaOH solution is 75%; the preservative is the preservative BIT20, and the content of each component is shown in Table 1 below.

[0025] The preparation method of the antioxidant is as follows: by weight, 4 parts of butylated hydroxyanisole are dissolved in 5 parts of toluene, 2 parts of benzyl(chloromethyl)dimethylsilane are added, 0.2 parts of dibutyltin dilaurate are added under stirring conditions, and the mixture is stirred and reacted at 70° C. for 2 hours; the mixture is washed with acetone and filtered.

[0026] A processing technology for aging-resistant latex comprises the following steps: Dissolve 5-amino-1,3-dihydroindole-2-one in dichloromethane, add diphenylacetic anhydride and triethylamine, and stir at 40°C for 3 hours; then add NaOH solution, heat to 60°C and stir to obtain product A; The styrene-butadiene rubber latex, the product A, an antioxidant and a preservative are blended to obtain a finished latex product.

[0027] Example 3: This example discloses an aging-resistant latex and a processing technology thereof; an aging-resistant latex comprising the following components: styrene-butadiene latex, 5-amino-1,3-dihydroindole-2-one, diphenylacetic anhydride, dichloromethane, triethylamine, NaOH solution, antioxidant and preservative; the mass fraction of the NaOH solution is 75%; the preservative is preservative BIT20, and the content of each component is shown in Table 1 below.

[0028] The preparation method of the antioxidant is as follows: by weight, 4 parts of butylated hydroxyanisole are dissolved in 4 parts of toluene, 2 parts of benzyl(chloromethyl)dimethylsilane are added, 0.2 parts of dibutyltin dilaurate are added under stirring conditions, and the reaction is stirred at 65° C. for 1.5 hours; the mixture is washed with acetone and filtered.

[0029] A processing technology for aging-resistant latex comprises the following steps: Dissolve 5-amino-1,3-dihydroindole-2-one in dichloromethane, add diphenylacetic anhydride and triethylamine, and stir at 35°C for 2.5 hours; then add NaOH solution, heat to 55°C and stir to obtain product A; The styrene-butadiene rubber latex, the product A, an antioxidant and a preservative are blended to obtain a finished latex product.

[0030] Example 4: The difference from Example 1 is that this example discloses an aging-resistant latex and its processing technology; an aging-resistant latex, comprising the following components: styrene-butadiene latex, 5-amino-1,3-dihydroindole-2-one, diphenylacetic anhydride, dichloromethane, triethylamine, NaOH solution, antioxidant, preservative, trans-1-nonenylboric acid, ethyl 2,2-dimethyl-4-pentenoate, azobisisobutyronitrile, anhydrous ethanol, 2'-hydroxy-4'-methylvaleriophenone and p-toluenesulfonic acid; the mass fraction of the NaOH solution is 75%; the preservative is the preservative BIT20, and the content of each component is shown in Table 1 below.

[0031] The preparation method of the antioxidant is as follows: by weight, 3 parts of butylated hydroxyanisole are dissolved in 4 parts of toluene, 1 part of benzyl(chloromethyl)dimethylsilane is added, 0.1 part of dibutyltin dilaurate is added under stirring conditions, and the mixture is stirred and reacted at 60° C. for 1 hour; the mixture is washed with acetone and filtered.

[0032] A processing technology for aging-resistant latex comprises the following steps: Dissolve 5-amino-1,3-dihydroindole-2-one in dichloromethane, add diphenylacetic anhydride and triethylamine, and stir at 30°C for 2h; then add NaOH solution, heat to 50°C and stir to obtain product A; Dissolve trans-1-nonenylboric acid, ethyl 2,2-dimethyl-4-pentenoate and azobisisobutyronitrile in anhydrous ethanol, stir and heat to 60°C under N2 environment, and react for 2 hours to obtain mixture B; further add 2'-hydroxy-4'-methylvaleriophenone and p-toluenesulfonic acid, maintain 60°C, and react for 1 hour to obtain mixture C; The styrene-butadiene latex, the product A, the mixture C, the antioxidant and the preservative are blended to obtain a finished latex product.

[0033] Infrared spectrum characterization of mixture B: the original 1640cm -1 The absorption peak of the C=C double bond at 900-1000cm -1 There is an obvious absorption peak of B-OH bond.

[0034] The infrared spectrum of mixture C is: 900-1000cm -1 The absorption peak of the B-OH bond at 1735-1745 cm -1The characteristic peak of C=O stretching vibration of ester bond appears at 1100-1200cm -1 There is an absorption peak of CO bond at , indicating the occurrence of esterification reaction.

[0035] Example 5: The difference from Example 2 is that this example discloses an aging-resistant latex and its processing technology; an aging-resistant latex, comprising the following components: styrene-butadiene latex, 5-amino-1,3-dihydroindole-2-one, diphenylacetic anhydride, dichloromethane, triethylamine, NaOH solution, antioxidant, preservative, trans-1-nonenylboric acid, 2,2-dimethyl-4-pentenoic acid ethyl ester, azobisisobutyronitrile, anhydrous ethanol, 2'-hydroxy-4'-methylvaleriophenone and p-toluenesulfonic acid; the mass fraction of NaOH solution is 75%; the preservative is preservative BIT20, and the content of each component is shown in Table 1 below.

[0036] The preparation method of the antioxidant is as follows: by weight, 4 parts of butylated hydroxyanisole are dissolved in 5 parts of toluene, 2 parts of benzyl(chloromethyl)dimethylsilane are added, 0.2 parts of dibutyltin dilaurate are added under stirring conditions, and the mixture is stirred and reacted at 70° C. for 2 hours; the mixture is washed with acetone and filtered.

[0037] A processing technology for aging-resistant latex comprises the following steps: Dissolve 5-amino-1,3-dihydroindole-2-one in dichloromethane, add diphenylacetic anhydride and triethylamine, and stir at 40°C for 3 hours; then add NaOH solution, heat to 60°C and stir to obtain product A; Dissolve trans-1-nonenylboric acid, ethyl 2,2-dimethyl-4-pentenoate and azobisisobutyronitrile in anhydrous ethanol, stir and heat to 65°C under N2 environment, and react for 3 hours to obtain mixture B; further add 2'-hydroxy-4'-methylvaleriophenone and p-toluenesulfonic acid, maintain 65°C, and react for 1.5 hours to obtain mixture C; The styrene-butadiene latex, the product A, the mixture C, the antioxidant and the preservative are blended to obtain a finished latex product.

[0038] Example 6: The difference from Example 3 is that this example discloses an aging-resistant latex and its processing technology; an aging-resistant latex, comprising the following components: styrene-butadiene latex, 5-amino-1,3-dihydroindole-2-one, diphenylacetic anhydride, dichloromethane, triethylamine, NaOH solution, antioxidant, preservative, trans-1-nonenylboric acid, 2,2-dimethyl-4-pentenoic acid ethyl ester, azobisisobutyronitrile, anhydrous ethanol, 2'-hydroxy-4'-methylvaleriophenone and p-toluenesulfonic acid; the mass fraction of NaOH solution is 75%; the preservative is preservative BIT20, and the content of each component is shown in Table 1 below.

[0039] The preparation method of the antioxidant is as follows: by weight, 4 parts of butylated hydroxyanisole are dissolved in 4 parts of toluene, 2 parts of benzyl(chloromethyl)dimethylsilane are added, 0.2 parts of dibutyltin dilaurate are added under stirring conditions, and the reaction is stirred at 65° C. for 1.5 hours; the mixture is washed with acetone and filtered.

[0040] A processing technology for aging-resistant latex comprises the following steps: Dissolve 5-amino-1,3-dihydroindole-2-one in dichloromethane, add diphenylacetic anhydride and triethylamine, and stir at 35°C for 2.5 hours; then add NaOH solution, heat to 55°C and stir to obtain product A; Dissolve trans-1-nonenylboric acid, ethyl 2,2-dimethyl-4-pentenoate and azobisisobutyronitrile in anhydrous ethanol, stir and heat to 62°C under N2 environment, and react for 2.5 hours to obtain mixture B; further add 2'-hydroxy-4'-methylvaleriophenone and p-toluenesulfonic acid, maintain 62°C, and react for 1.2 hours to obtain mixture C; The styrene-butadiene latex, the product A, the mixture C, the antioxidant and the preservative are blended to obtain a finished latex product.

[0041] Example 7: The difference from Example 1 is that the components of an aging-resistant latex also include trans-1-nonenylboric acid, 2,2-dimethyl-4-pentenoic acid ethyl ester, azobisisobutyronitrile and anhydrous ethanol, and the content of each component is shown in Table 1 below.

[0042] Example 8: The difference from Example 7 is that trans-1-nonenylboronic acid is replaced by 8-nonenoic acid.

[0043] Example 9: The difference from Example 8 is that 2,2-dimethyl-4-pentenoic acid ethyl ester is replaced by 2-butenoic acid ethyl ester.

[0044] Example 10: The difference from Example 4 is that 2'-hydroxy-4'-methylvalerophenone is replaced by 4-hydroxyvaleric acid ethyl ester. Comparative Example

[0045] Comparative Example 1 The difference from Example 1 is that 5-amino-1,3-dihydroindolin-2-one is replaced by diethylaminopropylamine.

[0046] Comparative Example 2 The difference from Example 1 is that diphenylacetic anhydride is replaced by fumaric anhydride.

[0047] Comparative Example 3 The difference from Example 1 is that the antioxidant is replaced by butylated hydroxyanisole.

[0048] Table 1 Component contents of Examples 1-7 Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Styrene Butadiene Latex 60 70 65 60 70 65 60 5-Amino-1,3-dihydroindolin-2-one 8 10 9 8 10 9 8 Diphenylacetic anhydride 5 6 5 5 6 5 5 Dichloromethane 4 5 4 4 5 4 4 Triethylamine 0.8 1 0.9 0.8 1 0.9 0.8 NaOH solution 3 4 4 3 4 4 3 Antioxidants 1 2 2 1 2 2 1 preservative 0.5 0.6 0.5 0.5 0.6 0.5 0.5 trans-1-nonenylboronic acid / / / 4 5 5 4 2,2-Dimethyl-4-pentenoic acid ethyl ester / / / 2 3 2 2 Azobisisobutyronitrile / / / 0.4 0.5 0.4 0.4 Anhydrous ethanol / / / 6 8 7 6 2'-Hydroxy-4'-methylvalerophenone / / / 1 2 2 / p-Toluenesulfonic acid / / / 0.2 0.3 0.3 / Performance testing

[0049] Test method: The latex samples prepared in each embodiment and comparative example were aged in hot air at 140°C for 72 hours, and the tensile strength was tested; the greater the tensile strength, the better the aging resistance. The test results are shown in Table 2 below.

[0050] Table 2 Performance test results of various embodiments and comparative examples Tensile strength / Mpa Example 1 13.8 Example 2 14.7 Example 3 14.2 Example 4 16.1 Example 5 17.1 Example 6 16.6 Example 7 15.5 Example 8 15.0 Example 9 13.4 Example 10 13.2 Comparative Example 1 10.7 Comparative Example 2 10.9 Comparative Example 3 13.4 This specific implementation is merely an explanation of the present application and is not intended to limit the scope of protection of the present application. After reading this specification, those skilled in the art may make modifications to the present implementation as needed without any creative contribution, but as long as it is within the scope of the claims of the present application, it shall be protected by the patent law.

Claims

1. An aging-resistant latex, characterized in that: The composition comprises the following components in parts by weight: 60-70 parts of styrene-butadiene latex; 8-10 parts of 5-amino-1,3-dihydroindolin-2-one; 5-6 parts of diphenylacetic anhydride; 4-5 parts of dichloromethane; 0.8-1 part of triethylamine; 3-4 parts NaOH solution; 1-2 parts antioxidants; 0.5-0.6 parts preservatives.

2. The aging-resistant latex according to claim 1, characterized in that: By weight, the invention also includes 4-5 parts of trans-1-nonenylboric acid, 2-3 parts of ethyl 2,2-dimethyl-4-pentenoate, 0.4-0.5 parts of azobisisobutyronitrile and 6-8 parts of anhydrous ethanol.

3. The aging-resistant latex according to claim 2, characterized in that: By weight, the invention also includes 1-2 parts of 2'-hydroxy-4'-methylvalerophenone and 0.2-0.3 parts of p-toluenesulfonic acid.

4. The aging-resistant latex according to claim 1, characterized in that: The preparation method of the antioxidant is as follows: by weight, 3-4 parts of butylated hydroxyanisole are dissolved in 4-5 parts of toluene, 1-2 parts of benzyl(chloromethyl)dimethylsilane are added, 0.1-0.2 parts of dibutyltin dilaurate are added under stirring conditions, and the mixture is stirred at 60-70° C. for reaction for 1-2 hours; and the mixture is washed with acetone and filtered.

5. The anti-aging latex according to claim 1, characterized in that: The mass fraction of the NaOH solution is 75%; the preservative is preservative BIT20.

6. The processing technology of the aging-resistant latex according to claim 1, characterized in that: The steps include: Dissolve 5-amino-1,3-dihydroindole-2-one in dichloromethane, add diphenylacetic anhydride and triethylamine, and stir at 30-40°C for 2-3h; then add NaOH solution, heat to 50-60°C and stir to obtain product A; The styrene-butadiene rubber latex, the product A, an antioxidant and a preservative are blended to obtain a finished latex product.

7. The processing technology of the aging-resistant latex according to claim 6 is characterized in that: The method further comprises the following steps: dissolving 4-5 parts of trans-1-nonenylboric acid, 2-3 parts of ethyl 2,2-dimethyl-4-pentenoate and 0.4-0.5 parts of azobisisobutyronitrile in 6-8 parts of anhydrous ethanol, stirring and heating to 60-65° C. in a N2 environment, and reacting for 2-3 hours to obtain a mixture B; further adding 1-2 parts of 2'-hydroxy-4'-methylvaleriophenone and 0.2-0.3 parts of p-toluenesulfonic acid, maintaining 60-65° C., and reacting for 1-1.5 hours to obtain a mixture C; The styrene-butadiene latex, the product A, the mixture C, the antioxidant and the preservative are blended to obtain a finished latex product.