New high-molecular-weight resin material with instant-drying function and preparation process of new high-molecular-weight resin material

Abstract

The invention relates to the technical field of high-molecular compounds, in particular to a novel high-molecular-weight resin material with an instant drying function and a preparation process thereof, and the novel high-molecular-weight resin material comprises polybasic acid, a free initiator, a diluent, epoxy resin, polyol, vegetable oil, an acrylic monomer, methyl methacrylate, an organic solvent and a curing agent. The epoxy resin is obtained through a polymerization reaction of epoxy chloropropane and an active hydrogen compound, the polybasic acid comprises gluconic acid, white tartaric acid or malic acid, the polyhydric alcohol comprises ethylene glycol, propylene glycol or butanediol, and the polyhydric alcohol and the polybasic acid are subjected to an ester cross-linking reaction to form polyester resin. Methyl methacrylate and acrylic monomer double bonds are subjected to a ring-opening polymerization reaction, and a high-molecular-weight polymer is generated. The resin has the characteristics of rapid curing, high durability, good flowability and processing performance, flexibility in various applications and the like, so that the resin has wide application prospects in the fields of coatings, adhesives, sealant and the like.

Description

Technical Field

[0001] This invention relates to the field of polymer compound technology, specifically to a new high molecular weight resin material with instant drying function and its preparation process. Background Technology

[0002] With the widespread application of polymer compounds in various industrial fields, the development of high molecular weight resins with instant drying function has become a research direction of great interest. These resins have unique properties, including rapid curing, high molecular weight and excellent performance, which makes them widely used in coatings, adhesives, inks and other fields.

[0003] Traditional methods for synthesizing high molecular weight resins are often limited by factors such as long reaction times, complex preparation processes, and high costs. More importantly, some high molecular weight resins may have defects such as excessively long drying times and unsatisfactory curing speeds when applied, which poses a challenge to industries that require rapid production. Summary of the Invention

[0004] The purpose of this invention is to provide a new high molecular weight resin material with instant drying function and its preparation process, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A novel high-molecular-weight resin material with instant drying function comprises the following: polybasic acid, free initiator, diluent, epoxy resin, polyol, vegetable oil, acrylic monomer, methyl methacrylate, organic solvent and curing agent;

[0007] Epoxy resin is obtained by the polymerization reaction of epichlorohydrin and active hydrogen compounds. Polybasic acids include one or more of gluconic acid, tartaric acid and malic acid, and polyols include one or more of ethylene glycol, propylene glycol and butanediol. Polyols and polybasic acids undergo ester crosslinking reaction to form polyester resin. Methyl methacrylate undergoes ring-opening polymerization reaction with the double bond of acrylic acid monomer to generate high molecular weight polymer.

[0008] As a further preferred embodiment of the present invention, the curing agent is phenol or amine.

[0009] As a further preferred embodiment of the present invention: the hydroxyl group of the polyol and the carboxyl group of the polyacid combine to form an ester bond, which can generate water molecules.

[0010] As a further preferred embodiment of the present invention, the free initiator is benzoyl oxide.

[0011] As a further preferred embodiment of the present invention, the organic solvent is methanol, ethanol, propanol, butanol, hexanol, acetone, methyl ethyl ketone, methyl ketone, methyl formate, ethyl acetate, or dibutyl phthalate.

[0012] As a further preferred embodiment of the present invention, the diluent is an alcohol, ketone, ester or ether.

[0013] A novel process for preparing a high molecular weight resin material with instant drying function, characterized by comprising the following steps:

[0014] S1: Provides a precise blend of vegetable oils, polyols, and polyacids;

[0015] S2: The provided mixture is added to a four-necked flask and esterified at high temperature (210℃-240℃) to accurately obtain a resin with an acid value not exceeding 14.

[0016] S3: Precisely cool the reaction mixture to 140°C;

[0017] S4: Precisely begin adding the pre-prepared mixed acrylic monomers, controlling the adding temperature within the range of 130℃-140℃, and precisely controlling the adding time within 3-4 hours;

[0018] S5: After the addition is complete, maintain a precise temperature for 1 hour;

[0019] S6: Precisely raise the reaction temperature to 160-180℃ and perform precise chain extension for 2 hours;

[0020] S7: After chain extension is completed, the temperature is precisely reduced to 150℃;

[0021] S8: Add the ester organic solvent slowly and precisely, and stir for 40 minutes;

[0022] S9: Finally, a high molecular weight resin with instant drying function is obtained. The resin has a slightly yellow transparent viscous appearance and exhibits excellent instant drying function.

[0023] As a further preferred embodiment of the present invention, the solid content of the resin is 58-62%.

[0024] As a further preferred embodiment of the present invention, the viscosity of the resin is 15,000-25,000 CPs at 25°C.

[0025] As a further preferred embodiment of the present invention, the acid value of the resin does not exceed 7.

[0026] Compared with the prior art, the beneficial effects of the present invention are:

[0027] This invention, through precise step control, including the dropwise addition of mixed acrylic monomers and chain extension processes, produces a resin with instant-drying capability, i.e., forming a robust structure in a short time, thus improving production efficiency and process speed. Furthermore, through appropriate formulation and reaction conditions, the resulting resin has a high molecular weight, which helps improve material performance and application range. The resin's acid value is controlled at a low level (not exceeding 7), indicating less acidic substances in the resin, which contributes to improved stability and durability. The viscosity at 25°C is between 15,000 and 25,000 CPs, which contributes to the resin's flexibility in various applications, such as coating and molding.

[0028] In summary, the beneficial effects of this high molecular weight instant-drying functional resin include rapid curing, high durability, good flowability and processability, and flexibility in a variety of applications. This makes it a promising candidate for use in coatings, adhesives, sealants, and other fields. Detailed Implementation

[0029] This embodiment discloses a novel high-molecular-weight resin material with instant drying function, comprising the following: polybasic acid, free initiator, diluent, epoxy resin, polyol, vegetable oil, acrylic monomer, methyl methacrylate, organic solvent, and curing agent;

[0030] The epoxy resin is obtained by the polymerization reaction of epichlorohydrin and active hydrogen compounds. The preparation of epoxy resin through the polymerization reaction of epichlorohydrin and active hydrogen compounds provides the resin with good crosslinking properties and chemical corrosion resistance. The polyacids include one or more of gluconic acid, tartaric acid and malic acid, and the polyols include one or more of ethylene glycol, propylene glycol and butanediol. The polyols and polyacids undergo ester crosslinking reaction to form polyester resin. Methyl methacrylate undergoes ring-opening polymerization reaction with the double bonds of acrylic acid monomers to generate high molecular weight polymers. The polyacids selected include gluconic acid, tartaric acid or malic acid, and the polyols include ethylene glycol, propylene glycol or butanediol. They form polyester resin through ester crosslinking reaction. The high molecular weight polymer is generated through the ring-opening polymerization reaction of acrylic acid monomers and methyl methacrylate, which increases the molecular weight and tunability of the material.

[0031] Furthermore, the curing agent is phenol or amine. Phenol or amine as a curing agent can help cure the resin, improve the resin's performance and stability. The hydroxyl groups of polyols and the carboxyl groups of polyacids combine to form ester bonds, which can generate water molecules and cause further reactions, helping to crosslink and adjust the properties of the resin. The free initiator is benzoyl oxide. Choosing benzoyl oxide as a free initiator may initiate free radical reactions in resin synthesis, promoting polymer formation. The organic solvent is methanol, ethanol, propanol, butanol, hexanol, acetone, methyl ethyl ketone, methyl ketone, methyl formate, ethyl acetate, or dibutyl phthalate. The diluent is alcohol, ketone, ester, or ether. Using methanol, ethanol, propanol, butanol, hexanol, acetone, methyl ethyl ketone, methyl ketone, methyl formate, ethyl acetate, or dibutyl phthalate as organic solvents and alcohols, ketones, esters, or ethers as diluents helps to adjust the viscosity and flowability of the resin.

[0032] A novel process for preparing a high molecular weight resin material with instant drying function, characterized by comprising the following steps:

[0033] S1: Provides a precisely proportioned mixture of vegetable oils, polyols, and polyacids, preparing a strictly proportioned mixture including vegetable oils, polyols, and polyacids. These components are added in specific proportions to ensure the accuracy of the mixture formulation;

[0034] S2: The provided mixture is added to a four-necked flask and subjected to a high-temperature (210℃-240℃) esterification reaction to precisely obtain a resin with an acid value not exceeding 14. This step aims to ensure that the resulting resin has the required acid value and to control the acid value not to exceed 14.

[0035] S3: Precisely cool the reaction mixture to 140°C.

[0036] S4: Precisely begin adding the pre-prepared mixed acrylic monomers, controlling the adding temperature within the range of 130℃-140℃, and precisely controlling the adding time within 3-4 hours;

[0037] S5: After the addition is complete, maintain a precise temperature for 1 hour;

[0038] S6: Precisely raise the reaction temperature to 160-180℃ and perform precise chain extension for 2 hours. This step aims to promote the formation and crosslinking of high molecular weight resin.

[0039] S7: After chain extension is completed, the temperature is precisely reduced to 150℃;

[0040] S8: Add the ester organic solvent slowly and precisely, and stir for 40 minutes;

[0041] S9: Finally, a high molecular weight resin with instant-drying function is obtained. The resin has a slightly yellow, transparent, viscous appearance and exhibits excellent instant-drying properties. The solid content of the resin is 58-62%, the viscosity at 25°C is 15000-25000 CPs, and the acid value of the resin does not exceed 7. After the above steps, a high molecular weight resin with instant-drying function is obtained. Its appearance is a slightly yellow, transparent, viscous substance, exhibiting excellent instant-drying properties.

[0042] Finally, according to the description, this resin has a solid content of 58-62%, a viscosity of 15,000-25,000 CPs at 25°C, and an acid value of no more than 7. These indicators are achieved under process control and precise conditions, which affect the performance and application of the resin.

[0043]

[0044] Each row in this table represents a different experimental data point, including reaction conditions and the properties of the final resin. This experiment aimed to synthesize a high molecular weight resin with instant drying capability. Under specific conditions (solid content 58-62%, viscosity at 25℃ in the range of 15000-25000 CPs, acid value ≤7), this resin exhibits a slightly yellow, transparent, viscous appearance. Esterification reaction conditions: Esterification was carried out at high temperature (210℃-240℃), controlling the acid value to ≤14. After cooling to 140℃, mixed acrylic monomers were added dropwise, ensuring the dropwise temperature was between 130℃ and 140℃ and the dropwise time was 3-4 hours. Chain extension process: After the dropwise addition was complete, the temperature was maintained for 1 hour, then raised to 160-180℃ for 2 hours of chain extension. This step may help form a high molecular weight resin structure. Adding organic solvent: After chain extension, the temperature is lowered to 150°C, and ester organic solvent is slowly added. After stirring for 40 minutes, the final product is obtained. The addition of organic solvent may help adjust the resin's flowability and application performance. Product properties: including target solid content, viscosity, and appearance as a slightly yellow transparent viscous liquid. The acid value also meets the predetermined requirements (≤7). Overall, the experiment successfully synthesized a high molecular weight resin with instant drying function, and its properties meet expectations. These conclusions provide a basis for further optimization of the synthesis process and applications.

[0045] It should be noted that the above embodiments are only specific and clear descriptions of the technical solutions and features of this application. Solutions or features that are prior art or common knowledge to those skilled in the art will not be described in detail in the above embodiments.

[0046] Furthermore, the technical solutions of this application are not limited to the above embodiments. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A novel high-molecular-weight resin material with instant-drying function, characterized in that, The components include: polybasic acids, free initiators, diluents, epoxy resins, polyols, vegetable oils, acrylic monomers, methyl methacrylate, organic solvents, and curing agents. The epoxy resin is obtained by the polymerization reaction of epichlorohydrin and active hydrogen compounds. The polyacids include one or more of gluconic acid, tartaric acid and malic acid, and the polyols include one or more of ethylene glycol, propylene glycol and butanediol. The polyols and polyacids undergo ester crosslinking reaction to form polyester resin. Methyl methacrylate undergoes ring-opening polymerization reaction with the double bonds of acrylic acid monomers to generate high molecular weight polymers.

2. The novel high-molecular-weight resin material with instant-drying function according to claim 1, characterized in that, The curing agent is phenol or amine.

3. The novel high-molecular-weight resin material with instant-drying function according to claim 1, characterized in that, The hydroxyl groups of the polyol and the carboxyl groups of the polyacid combine to form ester bonds, which can generate water molecules.

4. A novel high-molecular-weight resin material with instant-drying function according to claim 1, characterized in that, The free radical initiator is benzoyl oxide.

5. A novel high-molecular-weight resin material with instant-drying function according to claim 1, characterized in that, The organic solvent is methanol, ethanol, propanol, butanol, hexanol, acetone, methyl ethyl ketone, methyl ketone, methyl formate, ethyl acetate, or dibutyl phthalate.

6. A novel high-molecular-weight resin material with instant-drying function according to claim 1, characterized in that, The diluent is an alcohol, ketone, ester, or ether.

7. A process for preparing a new high molecular weight resin material with instant drying function, characterized in that, Includes the following steps: S1: Provides a precise blend of vegetable oils, polyols, and polyacids; S2: The provided mixture is added to a four-necked flask and esterified at high temperature (210℃-240℃) to accurately obtain a resin with an acid value not exceeding 14. S3: Precisely cool the reaction mixture to 140°C; S4: Precisely begin adding the pre-prepared mixed acrylic monomers, controlling the adding temperature within the range of 130℃-140℃, and precisely controlling the adding time within 3-4 hours; S5: After the addition is complete, maintain a precise temperature for 1 hour; S6: Precisely raise the reaction temperature to 160-180℃ and perform precise chain extension for 2 hours; S7: After chain extension is completed, the temperature is precisely reduced to 150℃; S8: Add the ester organic solvent slowly and precisely, and stir for 40 minutes; S9: Finally, a high molecular weight resin with instant drying function is obtained. The resin has a slightly yellow transparent viscous appearance and exhibits excellent instant drying function.

8. The preparation process of a new high molecular weight resin material with instant drying function according to claim 7, characterized in that, The resin has a solid content of 58-62%.

9. The preparation process of a new high molecular weight resin material with instant drying function according to claim 7, characterized in that, The viscosity of the resin is 15,000-25,000 CPs at 25°C.

10. The preparation process of a new high molecular weight resin material with instant drying function according to claim 7, characterized in that, The acid value of the resin does not exceed 7.

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