A kind of biological resin glue and its preparation method and application

Abstract

The present application relates to the field of biological adhesive materials, and discloses a biological resin glue and its preparation method and application. A biological resin glue is prepared from the following raw materials in parts by weight: 40-50 parts of vegetable oil, 25-35 parts of thermoplastic synthetic rubber, 20-30 parts of hydrogenated petroleum resin, 4-6 parts of polyisobutylene, 4-8 parts of stabilizer, and 0.5-2 parts of antioxidant; the thermoplastic synthetic rubber is composed of SBS, tetraethylene glycol diacrylate, allyl glycidyl ether, dibutyl itaconate, diluent and catalyst; its preparation method is: mixing, kneading, tableting and discharging, cooling and molding. The preparation method of the present application is simple, and the prepared biological resin glue has good softness, skin-friendliness, resilience and adhesion stability. It is used in invisible underwear and can maintain good fitting stability after multiple uses or washing.

Description

Technical Field

[0001] The present invention relates to the field of biological adhesive materials, and more specifically, to a biological resin adhesive and a preparation method and application thereof. Background Art

[0002] Invisible bra is a strapless bra, usually made of bra fabric attached with silicone pressure-sensitive adhesive. It can fit the body closely and provide good support while maintaining concealment when worn. It is suitable for matching with light, tight or low-cut clothing. Silicone pressure-sensitive adhesive has good softness and breathability, which makes the invisible bra not easy to fall off when worn, and improves the anti-slip and comfort of wearing the invisible bra.

[0003] Silicone pressure-sensitive adhesive is generally made of silicone resin, vinyl silicone oil, hydrogen-containing silicone oil, additives and vulcanizers. Since it contains a large amount of silicone oil ingredients, some users are prone to silicone oil allergies during use, which reduces the applicability of silicone pressure-sensitive adhesive in invisible underwear.

[0004] At present, there are some alternatives to silicone pressure-sensitive adhesives on the market for use as invisible underwear bonding adhesives, such as thermoplastic elastomer adhesives. Thermoplastic elastomer adhesives have good elasticity and flexibility, but the softness of thermoplastic elastomer adhesives is lower than that of silicone pressure-sensitive adhesives. When used in invisible underwear, the invisible underwear is prone to discomfort during wearing. Summary of the invention

[0005] In order to solve the problem that thermoplastic elastomer glue has low softness and reduces wearing comfort when used in invisible underwear, the present application provides a bioresin glue and a preparation method and application thereof.

[0006] In the first aspect, the present application provides a bioresin glue, which adopts the following technical solution:

[0007] A bioresin glue is prepared from the following raw materials in parts by weight:

[0008] 40-50 parts vegetable oil

[0009] Thermoplastic synthetic rubber 25-35 parts

[0010] 20-30 parts of hydrogenated petroleum resin

[0011] Polyisobutylene 4-6 parts

[0012] Stabilizer 4-8 parts

[0013] 0.5-2 parts of antioxidant;

[0014] The thermoplastic synthetic rubber consists of SBS, tetraethylene glycol diacrylate, allyl glycidyl ether, dibutyl itaconate, a diluent and a catalyst.

[0015] By adopting the above technical scheme, the bioresin glue of the present application uses thermoplastic synthetic rubber as the main rubber material, and hydrogenated petroleum resin and polyisobutylene as tackifying resins. The two produce a good synergistic effect, thereby improving the adhesion stability of the prepared bioresin glue. Vegetable oil is used as a biological plasticizer, which has good environmental protection, safety and softness and skin-friendliness. Under the homogenization and dispersion effect of the stabilizer, the thermoplastic synthetic rubber, hydrogenated petroleum resin and polyisobutylene fully absorb the vegetable oil. The prepared bioresin glue has good softness and skin-friendliness, resilience and adhesion stability, is safe for the human body, and has low irritation; it is not easy to deform after repeated use or washing, and has good adhesion stability.

[0016] SBS is a styrene-butadiene-styrene block copolymer, which is a thermoplastic elastomer with good resilience and tensile strength. However, since the middle block (butadiene segment) of SBS contains highly unsaturated double bonds, these double bonds make SBS less durable during use. Therefore, in this application, tetraethylene glycol diacrylate, allyl glycidyl ether and dibutyl itaconate are used to modify SBS. The diluent plays a role in dissolving SBS. Under the catalytic action of the catalyst, the unsaturated double bonds of SBS react with tetraethylene glycol diacrylate, allyl glycidyl ether and dibutyl itaconate to form a new type of SBS. Ester polymerization reaction occurs, tetraethylene glycol diacrylate and allyl glycidyl ether contain long-chain ether groups in their molecular structures, which can improve the softness, skin-friendliness and resilience of the prepared bioresin glue, dibutyl itaconate can copolymerize with the unsaturated double bonds of SBS, further improving the softness and adhesion stability of the bioresin glue, tetraethylene glycol diacrylate, allyl glycidyl ether and dibutyl itaconate produce a good synergistic effect, and the molecular structures of the prepared thermoplastic synthetic plastic are intertwined, having good resilience and softness, as well as good adhesion stability.

[0017] The bio-resin glue prepared in the present application is a hot-melt resin glue. When in use, the bio-resin glue is heated and melted, and then applied by coating or spraying. After cooling and forming, an adhesive bio-resin glue layer is formed, which has good softness, skin-friendliness, resilience and adhesion stability. When applied to invisible underwear, it can maintain good fitting stability after multiple uses and washings, is not easy to slip during wearing, and has good wearing comfort.

[0018] Preferably, the thermoplastic synthetic rubber is prepared from the following raw materials in parts by weight:

[0019] SBS 60-80 parts

[0020] 8-15 parts of tetraethylene glycol diacrylate

[0021] Allyl glycidyl ether 5-10 parts

[0022] 3-6 parts of dibutyl itaconate

[0023] 35-45 parts of diluent

[0024] Catalyst 0.5-1.5 parts;

[0025] The diluent is at least one of ethyl acetate, n-butyl acetate and isobutyl acetate, and the catalyst is dibenzoyl peroxide and / or tert-butyl peroxy-2-ethylhexanoate.

[0026] By adopting the above technical scheme, the above raw materials are reacted in an optimal amount, a polymerization reaction can be stably carried out, and a thermoplastic synthetic rubber with good softness, skin-friendliness, resilience and adhesion stability can be prepared.

[0027] Preferably, the preparation steps of the thermoplastic synthetic rubber are as follows:

[0028] A1, adding allyl glycidyl ether, dibutyl itaconate and a solvent into a reaction device, mixing them evenly, then adding SBS, stirring and dissolving, to obtain a mixture A;

[0029] A2. Tetraethylene glycol diacrylate and a catalyst are added to a reaction device, the temperature is raised under vacuum conditions to react, and the solvent is removed by reduced pressure distillation to obtain a thermoplastic synthetic rubber.

[0030] By adopting the above technical scheme, SBS is firstly fully dissolved in allyl glycidyl ether, dibutyl itaconate and a solvent, and then tetraethylene glycol diacrylate and a catalyst are added to react. Under the action of the catalyst, SBS and tetraethylene glycol diacrylate, allyl glycidyl ether and dibutyl itaconate undergo a polymerization reaction to obtain a thermoplastic rubber solution with a relatively low viscosity, and then reduced pressure distillation is performed to remove the solvent to obtain a thermoplastic synthetic rubber with a relatively high viscosity.

[0031] Preferably, the reaction temperature in step A2 is 70-75° C., and the reaction time is 1.5-2.5 h.

[0032] By adopting the above technical scheme, the better reaction conditions can make the polymerization reaction of SBS and tetraethylene glycol diacrylate, allyl glycidyl ether and dibutyl itaconate fully proceed, thereby improving the comprehensive performance of the obtained thermoplastic synthetic rubber.

[0033] Preferably, the vegetable oil consists of epoxidized soybean oil and castor oil in a weight ratio of (3-4):1.

[0034] By adopting the above technical scheme, epoxy soybean oil and castor oil are used as vegetable oils in an optimal dosage ratio, and the two produce a good synergistic effect, which can better improve the softness and ductility of the prepared thermoplastic synthetic rubber. The prepared bioresin glue has good softness, skin-friendliness and environmental protection, and is safe for the human body.

[0035] Preferably, the stabilizer is composed of diethylene glycol and styrene-octene-glycidyl methacrylate copolymer in a weight ratio of 1:(1-3).

[0036] By adopting the above technical scheme, the compounding of diethylene glycol and styrene-octene-glycidyl methacrylate copolymer in the above preferred dosage ratio can further improve the dispersion uniformity of SBS, hydrogenated petroleum resin and polyisobutylene, and improve the softness, resilience and adhesion stability of the prepared bioresin glue.

[0037] Preferably, the antioxidant is antioxidant 1010 and / or antioxidant 168.

[0038] By adopting the above technical solution, the above antioxidant can improve the aging resistance of the bioresin glue.

[0039] In a second aspect, the present application provides a method for preparing a bioresin glue, using the following technical solution:

[0040] A method for preparing a bioresin glue comprises the following preparation steps:

[0041] S1, adding vegetable oil, thermoplastic synthetic rubber and stabilizer into a mixing device, heating and mixing uniformly to obtain mixture I;

[0042] S2, adding hydrogenated petroleum resin, polyisobutylene and antioxidant into mixture I, mixing evenly, and obtaining mixture II; S3, kneading mixture II, pressing into tablets, cooling and forming, and obtaining bioresin glue.

[0043] By adopting the above technical scheme, the thermoplastic synthetic rubber is firstly made to fully absorb the vegetable oil, and the stabilizer is dispersed in the thermoplastic synthetic rubber, and then the hydrogenated petroleum resin, polyisobutylene and antioxidant are added and fully mixed, so that the hydrogenated petroleum resin and polyisobutylene absorb the vegetable oil to soften, and then kneading is performed to make the mixture II fully melted and mixed evenly, and then the material is pressed into sheets and cooled to form, so as to obtain the bioresin glue.

[0044] Preferably, the mixing temperature in step S3 is 150-160° C., and the mixing time is 30-60 min.

[0045] By adopting the above technical solution, better mixing conditions can improve mixing efficiency and improve the processing stability and performance of the prepared bioresin glue.

[0046] In a third aspect, the present application provides an application of a bioresin glue, using the following technical solution:

[0047] The invention discloses an application of a biological resin glue, wherein the biological resin glue is applied to invisible underwear.

[0048] By adopting the above technical scheme, the bio-resin glue of the present application is applied to invisible underwear, which has good softness, skin-friendliness, resilience and adhesion stability. The invisible underwear is not easy to fall off during wearing, has good water washing resistance, and can maintain good fitting stability after multiple washings. It is environmentally friendly and safe to the human body, has low irritation and strong applicability.

[0049] In summary, this application has the following beneficial effects:

[0050] 1. The bioresin glue of the present application uses a thermoplastic synthetic rubber made of SBS, tetraethylene glycol diacrylate, allyl glycidyl ether, dibutyl itaconate, a diluent and a catalyst as the main rubber material, and hydrogenated petroleum resin and polyisobutylene as tackifying resins. The prepared bioresin glue has good adhesion stability; vegetable oil is used as a bioplasticizer, which has good environmental protection, safety and softness and skin-friendliness; under the homogenization and dispersion effect of the stabilizer, the thermoplastic synthetic rubber, hydrogenated petroleum resin and polyisobutylene fully absorb the vegetable oil, and the prepared bioresin glue has good softness and skin-friendliness, resilience and adhesion stability, is safe for the human body, and has little irritation; it is not easy to deform after repeated use or washing, and has good adhesion stability.

[0051] 2. Using epoxidized soybean oil and castor oil in an optimal dosage ratio as vegetable oils, and using diethylene glycol and styrene-octene-glycidyl methacrylate copolymer in an optimal dosage ratio as stabilizers, further improve the dispersion uniformity of SBS, hydrogenated petroleum resin and polyisobutylene, and improve the softness, resilience and adhesion stability of the prepared bioresin glue.

[0052] 3. The bioresin glue of the present application is used in invisible underwear. The invisible underwear is not easy to fall off during wearing, has good water washing resistance, can maintain good fitting stability after multiple washings, is environmentally friendly and safe to the human body, has little irritation, and has strong applicability. DETAILED DESCRIPTION

[0053] The present application is further described in detail below with reference to the embodiments.

[0054] The following are the sources and specifications of some raw materials of this application. The raw materials used in the preparation examples and embodiments of this application can be obtained from the market, including but not limited to the raw materials of the following models and manufacturers. Raw materials with equivalent performance can be used:

[0055] 1. SBS: Kraton, D1101JO;

[0056] 2. Tetraethylene glycol diacrylate: CAS No. 17831-71-9, content 99%;

[0057] 3. Allyl glycidyl ether: CAS No. 106-92-3, content 99.5%;

[0058] 4. Dibutyl itaconate: CAS No. 2155-60-4, content 99%;

[0059] 5. Hydrogenated petroleum resin: Qiming hydrogenated C9 petroleum resin, model QM-100A;

[0060] 6. Polyisobutylene: Dalin PB1400 from South Korea;

[0061] 7. Epoxidized soybean oil: CAS No. 8013-07-8, content 99%, industrial grade, pH = 4.0-5.0;

[0062] 8. Castor oil: refined castor oil, CAS No. 8001-79-4, content 99%, density

[0063] 0.970g / cm 3 ;

[0064] 9. Diethylene glycol: CAS No. 111-46-6, content 98%;

[0065] 10. Styrene-octene-glycidyl methacrylate copolymer: Jiayirong brand, SOG-02.

[0066] Preparation example of thermoplastic synthetic rubber

[0067] Preparation Example 1

[0068] Preparation Example 1 discloses a thermoplastic synthetic rubber, which is prepared by the following steps:

[0069] A1. Add 0.5 kg of allyl glycidyl ether, 0.3 kg of dibutyl itaconate and 3.5 kg of ethyl acetate as solvents into a reactor, mix well, add 6 kg of SBS, stir at 45 ° C for 1.5 hours, stir and dissolve to obtain a mixture A;

[0070] A2. Add 1.2 kg of tetraethylene glycol diacrylate and 0.05 kg of catalyst into a reactor, heat to 70° C. under a vacuum degree of -0.08 MPa, react for 2.5 hours, and then perform reduced pressure distillation to remove the ethyl acetate solvent to obtain a thermoplastic synthetic rubber.

[0071] Preparation Example 2-3

[0072] The difference between Preparation Example 2-3 and Preparation Example 1 is that the amount of raw materials used and the preparation conditions are different, see Table 1 below for details.

[0073] Table 1 Raw material dosage and preparation conditions of Preparation Examples 1-3

[0074]

[0075]

[0076] Preparation Comparative Example 1

[0077] The difference between Preparation Comparative Example 1 and Preparation Example 1 is that an equal amount of tetraethylene glycol diacrylate is replaced by methyl methacrylate, and the rest is the same as Preparation Example 1.

[0078] Preparation Comparative Example 2

[0079] The difference between Preparation Comparative Example 2 and Preparation Example 1 is that an equal amount of allyl alcohol glycidyl ether is replaced by tetraethylene glycol diacrylate, and the rest is the same as Preparation Example 1.

[0080] Preparation Comparative Example 3

[0081] The difference between Preparation Comparative Example 3 and Preparation Example 1 is that an equal amount of dibutyl itaconate is replaced by hydroxyethyl acrylate, and the rest is the same as Preparation Example 1.

[0082] Example

[0083] Example 1

[0084] Example 1 discloses a bioresin glue, which is prepared by the following steps:

[0085] S1, adding 4 kg of epoxidized soybean oil as vegetable oil, 2.5 kg of the thermoplastic synthetic rubber prepared in Preparation Example 1 and 0.4 kg of a stabilizer (composed of polyethylene glycol 800 and diethylene glycol in a weight ratio of 1:1) into a mixer, heating to 100° C., mixing for 20 minutes, and mixing evenly to obtain a mixture I;

[0086] S2, adding 2 kg of hydrogenated petroleum resin, 0.4 kg of polyisobutylene and 0.1 kg of antioxidant (composed of antioxidant 1010 and antioxidant 168 in a weight ratio of 1:1) to mixture I, mixing at a temperature of 90° C. for 30 min, mixing evenly, to obtain mixture II;

[0087] S3. Mix the mixture II at a temperature of 150°C for 30 minutes, press the mixture into tablets, cool and shape the tablets, and obtain the bioresin glue.

[0088] When the prepared bio-resin glue is used in invisible underwear, the invisible underwear consists of a cup and a bio-resin glue layer adhered to the inner side of the cup. The bio-resin glue layer consists of a fitting area and a hollow area. The hollow area is set corresponding to the BP point of the chest and has good air permeability, soft skin-friendliness and fitting stability.

[0089] Example 2-3

[0090] The difference between Example 2-3 and Example 1 is that the amount of raw materials used and the preparation conditions are different, see Table 2 below for details.

[0091] Table 2 Raw material dosage and preparation conditions of Examples 1-3

[0092]

[0093] Example 4

[0094] The difference between Example 4 and Example 1 is that the vegetable oil is different. The vegetable oil in Example 4 consists of epoxidized soybean oil and castor oil. The amount of epoxidized soybean oil is 3 kg, and the amount of castor oil is 1 kg. The rest is the same as Example 1.

[0095] Example 5

[0096] The difference between Example 5 and Example 4 is that the amount of epoxidized soybean oil used is 3.2 kg, the amount of castor oil used is 0.8 kg, and the rest is the same as Example 4.

[0097] Example 6

[0098] The difference between Example 6 and Example 4 is that the stabilizer is different. The stabilizer in Example 4 is composed of diethylene glycol and styrene-octene-glycidyl methacrylate copolymer, the amount of diethylene glycol used is 0.2 kg, the amount of styrene-octene-glycidyl methacrylate copolymer used is 0.2 kg, and the rest is the same as Example 4.

[0099] Example 7

[0100] The difference between Example 7 and Example 6 is that the amount of diethylene glycol used is 0.1 kg, the amount of styrene-octene-glycidyl methacrylate copolymer used is 0.3 kg, and the rest is the same as Example 6.

[0101] Comparative Example

[0102] Comparative Example 1

[0103] The difference between Comparative Example 1 and Example 1 is that the source of the thermoplastic synthetic rubber is different. The thermoplastic synthetic rubber in Comparative Example 1 is derived from the preparation of Comparative Example 1. The rest is the same as Example 1.

[0104] Comparative Example 2

[0105] The difference between Comparative Example 2 and Example 1 is that the thermoplastic synthetic rubber in Comparative Example 2 is derived from the preparation of Comparative Example 2, and the rest is the same as Example 1.

[0106] Comparative Example 3

[0107] The difference between Comparative Example 3 and Example 1 is that the thermoplastic synthetic rubber in Comparative Example 3 is derived from the preparation of Comparative Example 3, and the rest is the same as Example 1.

[0108] Comparative Example 4

[0109] The difference between Comparative Example 4 and Example 1 is that the thermoplastic synthetic rubber is SBS, and the rest is the same as Example 1.

[0110] Comparative Example 5

[0111] The difference between Comparative Example 5 and Example 1 is that an equal amount of polyisobutylene is replaced by hydrogenated petroleum resin, and the rest is the same as Example 1.

[0112] Comparative Example 6

[0113] The difference between Comparative Example 6 and Example 1 is that the stabilizer is replaced with vegetable oil in equal amount, and the rest is the same as Example 1.

[0114] Performance Testing The following performance tests were conducted on the bio-based resin adhesives prepared in Examples 1-7 and Comparative Examples 1-6:

[0115] 1. Hardness test:

[0116] The bioresin glue is melted at a temperature of 160°C, coated on the surface of the PET film and cooled to form a test film, and a Shore A hardness tester is used to test the hardness of the test film (unit: Shore A), and the test results are tested and recorded;

[0117] 2. Resilience test:

[0118] The bioresin glue was melted at a temperature of 160°C, coated on the surface of the PET film and cooled to form a test film with PET films attached to both sides. According to the test method in GB / T 7759.1-2015, the test was carried out at room temperature for 72 hours to test the compression deformation recovery rate (unit: %), and the test results were tested and recorded;

[0119] 3. Peel force test:

[0120] The bioresin glue was melted at a temperature of 160°C, coated on the surface of the PET film and cooled to form a test film. The thickness of the bioresin glue was 1.5 mm. The peel strength (unit: N / cm) was tested according to the test method in Appendix B of GB / T2792-2014, recorded as the initial peel strength, and the test results were tested and recorded;

[0121] 4. Washing test:

[0122] The bioresin glue was melted at a temperature of 160°C, coated on the surface of a cotton fabric with a thickness of 2 mm and cooled to form a sample. The thickness of the bioresin glue was 1.5 mm. It was washed with water 25 times. According to the test method in Appendix B of GB / T2792-2014, the peel strength (unit: N / cm) of the bioresin glue surface of the sample was tested, recorded as the water washing peel strength, and the test results were tested and recorded;

[0123] The following are the performance test data of the bioresin glue of Examples 1-7 and Comparative Examples 1-6, see Table 3 below for details.

[0124] Table 3 Performance data of bioresin glue of Examples 1-7 and Comparative Examples 1-6

[0125]

[0126]

[0127] Combining Examples 1-3 and Comparative Examples 1-4 and Table 3, it can be concluded that the bioresin glue prepared by using the thermoplastic synthetic rubber made of SBS, tetraethylene glycol diacrylate, allyl glycidyl ether, dibutyl itaconate, diluent and catalyst of the present application has good softness, skin-friendliness, resilience and adhesion stability. Compared with Example 1, the hardness of the bioresin glue prepared in Comparative Examples 1-3 is increased by 7, the compression deformation recovery rate is reduced by 2.5%, the initial peel strength is reduced by 1N / cm, and the water washing peel strength is reduced by 1.6N / cm; Comparative Examples In Example 4, the thermoplastic synthetic rubber is changed to directly use SBS. Compared with the thermoplastic synthetic rubber prepared in Example 1, the hardness is significantly increased by 14, the compression deformation recovery rate is reduced by 9.6%, the initial peel strength is reduced by 2.3N / cm, and the water washing peel strength is reduced by 3.3N / cm. This is because without the synergistic effect of SBS, tetraethylene glycol diacrylate, allyl glycidyl ether and dibutyl itaconate, the softness, resilience and adhesion of the thermoplastic synthetic rubber are all low, which reduces the softness, resilience and adhesion of the prepared bioresin glue.

[0128] Combining Example 1 and Comparative Example 5 and Table 3, it can be concluded that the hydrogenated petroleum resin and polyisobutylene of the present application have a good synergistic effect when used as tackifying resins. In Comparative Example 5, when hydrogenated petroleum resin is used alone, the performance of the obtained bioresin glue is reduced.

[0129] Combining Example 1 with Examples 4-5, 6-7 and Comparative Example 6 and Table 3, it can be concluded that the use of diethylene glycol and styrene-octene-glycidyl methacrylate copolymer in a preferred dosage ratio of the present application as a stabilizer, and a preferred dosage ratio of epoxidized soybean oil and castor oil as a vegetable oil, the stabilizer and the vegetable oil can produce a good synergistic effect, can improve the mixing uniformity of the components, and thus improve the performance of the prepared bioresin glue, while in Comparative Example 5, the stabilizer is replaced with vegetable oil, the hardness of the prepared bioresin glue is increased, the compression deformation recovery rate is reduced, and the initial peel strength and water washing peel strength are reduced.

[0130] From the above, it can be seen that the bio-resin glue of the present application has good softness and skin-friendliness, is not easy to deform when compressed, has good resilience, and has good adhesion performance. It can maintain good fitting stability after multiple washings. It uses vegetable oil as a bioplasticizer, has good environmental protection and safety, and is suitable for invisible underwear.

[0131] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. A bioresin glue, characterized in that: It is prepared from the following raw materials in parts by weight: 40-50 parts vegetable oil Thermoplastic synthetic rubber 25-35 parts 20-30 parts of hydrogenated petroleum resin Polyisobutylene 4-6 parts Stabilizer 4-8 parts 0.5-2 parts of antioxidant; The thermoplastic synthetic rubber is prepared from the following raw materials in parts by weight: SBS 60-80 parts 8-15 parts of tetraethylene glycol diacrylate Allyl glycidyl ether 5-10 parts 3-6 parts of dibutyl itaconate 35-45 parts of diluent Catalyst 0.5-1.5 parts; The diluent is at least one of ethyl acetate, n-butyl acetate and isobutyl acetate, and the catalyst is dibenzoyl peroxide and / or tert-butyl peroxy-2-ethylhexanoate; The preparation steps of the thermoplastic synthetic rubber are as follows: A1, adding allyl glycidyl ether, dibutyl itaconate and a solvent into a reaction device, mixing them evenly, then adding SBS, stirring and dissolving, to obtain a mixture A; A2. Tetraethylene glycol diacrylate and a catalyst are added to a reaction device, the temperature is raised under vacuum conditions to react, and the solvent is removed by reduced pressure distillation to obtain a thermoplastic synthetic rubber.

2. A bioresin glue according to claim 1, characterized in that: The reaction temperature in step A2 is 70-75° C., and the reaction time is 1.5-2.5 h.

3. A bioresin glue according to claim 1, characterized in that: The vegetable oil consists of epoxidized soybean oil and castor oil in a weight ratio of (3-4):

1.

4. A bioresin glue according to claim 1, characterized in that: The stabilizer is composed of diethylene glycol and styrene-octene-glycidyl methacrylate copolymer in a weight ratio of 1:(1-3).

5. The bioresin glue according to claim 1, characterized in that: The antioxidant is antioxidant 1010 and / or antioxidant 168.

6. A method for preparing a bioresin glue as claimed in any one of claims 1 to 5, characterized in that: The method comprises the following preparation steps: S1, adding vegetable oil, thermoplastic synthetic rubber and stabilizer into a mixing device, heating and mixing uniformly to obtain mixture I; S2, adding hydrogenated petroleum resin, polyisobutylene and antioxidant to mixture I, mixing evenly, to obtain mixture II; S3, kneading the mixture II, pressing into tablets, cooling and molding, and obtaining the bioresin glue.

7. The method for preparing a bioresin glue according to claim 6, characterized in that: The mixing temperature of step S3 is 150-160° C., and the mixing time is 30-60 min.

8. An application of a bioresin glue as claimed in any one of claims 1 to 5, characterized in that: Used in invisible underwear.

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