Strippable nail tip glue instant adhesive and preparation method thereof

Abstract

The invention relates to a strippable nail tip adhesive instant adhesive and a preparation method thereof. The strippable nail tip adhesive instant adhesive is prepared from the following raw materials in parts by weight: 50 to 90 parts of alpha-cyanoacrylate monomer, 3 to 30 parts of stripping agent, 0.01 to 0.05 part of polymerization inhibitor, 0.01 to 0.05 part of accelerator, 5 to 10 parts of thickening agent, 0.1 to 1 part of antioxidant and 0.5 to 1.5 parts of thixotropic agent. The invention provides the strippable nail tip adhesive instant adhesive and the preparation method thereof. The strippable nail tip adhesive instant adhesive does not need UV photocuring equipment, is high in use convenience, has the characteristic of easy stripping, and is convenient for nail tip removal.

Description

Technical Field

[0001] The invention belongs to the technical field of nail glue adhesives, in particular to a peelable nail glue instant adhesive, and also relates to a preparation method of the nail glue instant adhesive. Background Art

[0002] Manicure is a kind of work to decorate and beautify nails. It has a long history and can be traced back to the Tang Dynasty. Manicure is the process of disinfecting, cleaning, caring, maintaining, modifying and beautifying nails according to the customer's hand shape, nail shape, skin color and requirements. Bonding nail tips is also a common decorative method of manicure, and nail tip glue is the core material for nail tip bonding.

[0003] The mainstream nail glue currently uses UV glue as the main body. First, apply a proper amount of glue on the inside of the nail, then stick the nail on the nail, and use a phototherapy machine to dry the nail. After the nail is attached, it can also be properly polished to make the nail more suitable for your hand shape, but inevitably, due to the characteristics of ultraviolet light curing, this nail glue can only be quickly cured under ultraviolet light. This will cause severe burning pain if the nail is too thin, and discomfort and inconvenience will occur if the nail is too thick.

[0004] There are also some common nail glues on the market that avoid the light-curing characteristics of UV adhesives, but they are often too strong and not very targeted. When removing the nails, they often need to be soaked in nail remover for a long time, which consumes a lot of time and is not convenient. In order to reduce the strength, this type of nail glue will also use solvents that are harmful to the human body, which not only corrodes the nails, but also has harm to the human body. It is not recommended for long-term use; and many nail glues with instant adhesives currently have irritating odors, which affects the user experience.

[0005] Based on the above defects, the present application further studies nail glue (nail glue instant adhesive). Summary of the invention

[0006] The invention provides a peelable nail glue instant adhesive and a preparation method thereof. The peelable nail glue instant adhesive does not require UV light curing equipment, is highly convenient to use, and has the characteristic of being easy to peel, so that the nail piece can be easily removed.

[0007] The present invention is solved by the following technical solutions.

[0008] A peelable nail glue instant adhesive comprises the following raw materials in parts by weight: 50-90 parts of α-cyanoacrylate monomer, 3-30 parts of stripping agent, 0.01-0.05 parts of inhibitor, 0.01-0.05 parts of accelerator, 5-10 parts of thickener, 0.1-1 parts of antioxidant and 0.5-1.5 parts of thixotropic agent.

[0009] In a specific embodiment, the α-cyanoacrylic acid monomer is α-cyanoacrylate methoxyethyl ester.

[0010] In a specific embodiment, the accelerator includes one or more of octadecacrown ether-6 and dibenzooctadecacrown ether-6, which are used to adjust the curing speed.

[0011] In a specific embodiment, the stripping agent includes one or more of triacetin, dimethyl carbonate, dibutyl carbonate, and dioctyl carbonate, which are used to adjust the stripping strength.

[0012] In a specific embodiment, the polymerization inhibitor includes one or more of hydroquinone, pyrogallic acid, methanesulfonic acid, propyl gallate, pyrogallol, boron trifluoride etherate, and sulfur dioxide.

[0013] In a specific embodiment, the thickener includes one or more of polymethyl methacrylate, polyethyl methacrylate, and polybutyl methacrylate.

[0014] In a specific implementation, the antioxidant includes one or more of tetrahydrophthalic anhydride and phthalic anhydride; and the thixotropic agent is fumed silica.

[0015] The preparation method of the above-mentioned peelable nail glue instant adhesive comprises the following steps: S10: drying the thickener; S20: weighing corresponding weight portions of raw materials according to the formula ratio; S30: firstly, α-cyanoacrylate monomer, stripping agent, polymerization inhibitor, accelerator and thickener are put into a reaction kettle, heated and vacuum stirred until completely dissolved; S40: adding antioxidant and thixotropic agent to the reactor after cooling; S50: After being evenly dispersed, the material is discharged to obtain a peelable nail glue instant adhesive.

[0016] In a specific embodiment, the α-cyanoacrylic acid monomer is α-cyanoacrylic acid methoxyethyl ester; the accelerator includes one or more of octadecanoyl crown ether-6 and dibenzooctadecanoyl crown ether-6, which is used to adjust the curing speed; the stripping agent includes one or more of ethyl acetate, dimethyl carbonate, dibutyl carbonate, and dioctyl carbonate; the inhibitor includes one or more of hydroquinone, pyrogallic acid, methylsulfonic acid, propyl gallate, pyrogallol, boron trifluoride ether, and sulfur dioxide; the thickener includes one or more of polymethyl methacrylate, polyethyl methacrylate, and polybutyl methacrylate; the antioxidant includes one or more of tetrahydrophthalic anhydride and phthalic anhydride; and the thixotropic agent is fumed silica.

[0017] In a specific embodiment, in step S10, the drying temperature is 80°C to 84°C for at least 4 hours, and the environment is dehumidified to control the humidity below 60%RH; in step S30, 50-90 parts by weight of α-cyanoacrylate monomer is added to a reactor, and stirring is started at a stirring speed of 300rpm-500rpm; 0.01-0.05 parts by weight of an inhibitor is added to the reactor, and the stirring speed is controlled at 300rpm-500rpm, and stirring is continued; 3-30 parts by weight of a stripping agent is added to the reactor, and the stirring speed is controlled at 100rpm-200rpm. Stir continuously at 300rpm-500rpm; add 0.01-0.05 parts by weight of accelerator to the reactor, control the stirring speed at 300rpm-500rpm, and continue stirring; add 5-10 parts by weight of thickener, start heating, and gradually increase the stirring speed as the temperature rises until the temperature reaches 65-70°C and the stirring speed gradually reaches 800rpm; in step S40, after the liquid in the reactor is completely dissolved and clarified, cool it down, and after it drops to room temperature, add 0.1-1 parts by weight of antioxidant; 0.5-1.5 parts by weight of thixotropic agent, and stir thoroughly at 800rpm.

[0018] Compared with the prior art, the present invention has the following beneficial effects: providing a peelable nail glue instant adhesive and a preparation method thereof, wherein the peelable nail glue instant adhesive does not require UV light curing equipment, is highly convenient to use, and has the characteristic of being easy to peel, making it convenient to remove the nail piece. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with specific embodiments. The raw material parts in the following examples are all parts by weight. Embodiment 1

[0020] S10: Pretreatment: Place polymethyl methacrylate (thickener) in a forced air drying oven at 82°C for 4 hours; Environmental treatment: Dehumidify and control the ambient humidity below 60%RH.

[0021] S20: weighing raw materials in parts by weight according to the formula ratio.

[0022] S30: 50 parts of α-cyanoacrylate methoxyethyl ester was added to the reactor at 300 rpm. Start stirring at a stirring speed of 0.002 parts of boron trifluoride ether (inhibitor) and 0.035 parts of dibenzooctadecanoic crown ether-6 (accelerator) were added into the reaction kettle and stirred at a stirring speed of 300 rpm for continuous stirring.

[0023] To ensure basic strength, 0.015 parts of pyrogallic acid (inhibitor) was added into the reactor, and the stirring speed was controlled at 300 rpm and stirred continuously.

[0024] Take 15 parts of ethyl acetate (stripping agent) and 10 parts of dimethyl carbonate (stripping agent), mix them evenly and put them into the reactor. Control the stirring speed at 300 rpm and continue stirring.

[0025] In order to ensure the fluidity of the adhesive, 10 parts of polymethyl methacrylate (thickener) were added, and the temperature began to rise. As the temperature rose, the stirring speed was gradually increased until the temperature reached 65°C-70°C and the stirring speed reached 800rpm.

[0026] S40: After the liquid is clarified, it is cooled to room temperature, 0.5 parts of tetrahydrophthalic anhydride (antioxidant) and 0.5 parts of fumed silica are added, and the mixture is stirred at 800 rpm.

[0027] S50: Check the material discharge and obtain the nail glue instant adhesive. Embodiment 2

[0028] S10: Pretreatment: Place polymethyl methacrylate (thickener) in a forced air drying oven at 82°C for 4 hours; Environmental treatment: Dehumidify and control the ambient humidity below 60%RH.

[0029] S20: weighing raw materials in parts by weight according to the formula ratio.

[0030] S30: 90 parts of α-cyanoacrylate methoxyethyl ester was added to the reactor at 300 rpm. Start stirring at a stirring speed of 0.00035 parts of boron trifluoride ether (inhibitor) and 0.01 parts of octadecacrown 6 (accelerator) were added into the reaction kettle and stirred at a speed of 300 rpm for continuous stirring.

[0031] To ensure basic strength, 0.015 parts of pyrogallic acid (inhibitor) was added into the reactor, and the stirring speed was controlled at 300 rpm and stirred continuously.

[0032] Take 3 parts of triacetin (stripping agent), mix well and put into the reactor, control the stirring speed at 300 rpm and continue stirring.

[0033] In order to ensure the fluidity of the adhesive, 4 parts of polymethyl methacrylate, 0.5 parts of polyethyl methacrylate, and 0.5 parts of polybutyl methacrylate (thickener) were added, and the temperature began to rise. As the temperature rose, the stirring speed was gradually increased until the temperature reached 65℃-70℃ and the stirring speed reached 800rpm.

[0034] S40: After the liquid is clarified, the temperature is lowered to room temperature, 1 part of tetrahydrophthalic anhydride and 0.5 part of fumed silica are added, and the mixture is stirred at 800 rpm.

[0035] S50: Check the material discharge and obtain the peelable nail glue instant adhesive. Embodiment 3

[0036] S10: Pretreatment: Place polymethyl methacrylate (thickener) in a forced air drying oven at 82°C for 4 hours; Environmental treatment: Dehumidify and control the ambient humidity below 60%RH.

[0037] S20: weighing raw materials in parts by weight according to the formula ratio.

[0038] S30: 70 parts of methoxyethyl α-cyanoacrylate were added to the reactor at 300 rpm. Start stirring at a stirring speed of 0.002 parts of boron trifluoride ether (inhibitor) and 0.01 parts of octadecacrown 6 (accelerator) were added into the reaction kettle and stirred at a speed of 300 rpm for continuous stirring.

[0039] Take 10 parts of ethyl acetate (stripping agent), 5 parts of dioctyl carbonate (stripping agent), and 15 parts of dimethyl carbonate (stripping agent), mix them evenly and put them into the reactor. Control the stirring speed at 300 rpm and continue stirring.

[0040] 0.03 parts of pyrogallic acid (inhibitor) was added into the reactor, the stirring speed was increased to 500 rpm, and stirring was continued.

[0041] Add 10 parts of acrylic polymer (thickener), start heating, and gradually increase the stirring speed as the temperature rises until the temperature reaches 65-70°C and the stirring speed reaches 800rpm.

[0042] S40: After the liquid is clarified, the temperature is lowered to room temperature, 0.5 parts of tetrahydrophthalic anhydride and 1.5 parts of fumed silica are added, and the mixture is stirred at 800 rpm.

[0043] S50: Check the material discharge and obtain the peelable nail glue instant adhesive.

[0044] The performance characterization test of the products in Examples 1 to 3 is as follows: The bonding speed of the products in Examples 1 to 3 on the nail plate is 15s to 23s, which is in line with normal usage habits. At the same time, the bonding speed on metal materials, ABS, and PMMA is faster. In addition, there is no falling off for a long time after bonding, and the service life is long. The average peeling force is less than 5N, which means it is easy to peel off.

[0045] At present, in the existing technology, UV nail adhesive is used as the main body, which generally requires light curing with a phototherapy machine, and it is necessary to go to a professional nail salon to apply the nail tips. In addition, there will be a burning sensation when the nail tips are bonded, which is not convenient and friendly enough. At the same time, the strength of conventional instant adhesives on the market is too high, and it is necessary to soak the nail remover for a long time when removing the nails. There are also some instant nail adhesives on the market that use solvents that are harmful to the human body to reduce their strength. They not only corrode the nail tips, but also have harmful effects on the human body and have a pungent odor. They are not recommended for long-term use.

[0046] The instant nail adhesive involved in this application is easy to use, does not require ultraviolet light response, is easy to peel off, and can reuse the nails. It has the following advantages: (1) It adopts a snatch reaction type curing method, so that the instant nail adhesive can be cured quickly, reducing the equipment and time requirements of the phototherapy machine and increasing convenience. (2) The introduction of a peeling agent ensures the peelable property while ensuring the bonding strength, thereby improving the reuse rate and operability of the nail. (3) The introduced thickener and thixotropic agent inhibit the flowability, making the operation more controllable and reducing the flow and dripping to a certain extent. (4) The introduced α-cyanoacrylate monomer has no irritating odor, which is convenient for customers to use. (5) It has excellent moisture and heat resistance, meeting the use needs of customers in different environments.

[0047] The protection scope of the present invention includes but is not limited to the above embodiments. The protection scope of the present invention shall be based on the claims. Any replacement, deformation, and improvement of the technology that can be easily thought of by technicians in this field shall fall within the protection scope of the present invention.

Claims

1. A peelable nail glue instant adhesive, characterized by: The peelable nail glue instant adhesive comprises the following raw materials in parts by weight: α-cyanoacrylate monomer 50-90 parts, 3 to 30 parts of stripping agent, 0.01 to 0.05 parts of polymerization inhibitor, Accelerator 0.01~0.05 parts, Thickener 5-10 parts, 0.1 to 1 part of antioxidant, Thixotropic agent 0.5-1.5 parts.

2. The peelable nail plate instant adhesive according to claim 1, characterized in that: The α-cyanoacrylic acid monomer is α-cyanoacrylate methoxyethyl ester.

3. The peelable nail plate instant adhesive according to claim 2, characterized in that: The accelerator includes one or more of octadecanocrown ether-6 and dibenzooctadecanocrown ether-6, and is used to adjust the curing speed.

4. The peelable nail plate instant adhesive according to claim 3, characterized in that: The stripping agent includes one or more of triacetin, dimethyl carbonate, dibutyl carbonate and dioctyl carbonate, and is used to adjust the stripping strength.

5. The peelable nail plate instant adhesive according to claim 4, characterized in that: The polymerization inhibitor includes one or more of hydroquinone, pyrogallic acid, methanesulfonic acid, propyl gallate, pyrogallol, boron trifluoride etherate, and sulfur dioxide.

6. The peelable nail plate instant adhesive according to claim 5, characterized in that: The thickener includes one or more of polymethyl methacrylate, polyethyl methacrylate, and polybutyl methacrylate.

7. The peelable nail plate instant adhesive according to claim 6, characterized in that: The antioxidant includes one or more of tetrahydrophthalic anhydride and phthalic anhydride; and the thixotropic agent is fumed silica.

8. The method for preparing the peelable instant adhesive for nail glue according to any one of claims 1 to 7, characterized in that: The following steps are involved: S10: drying the thickener; S20: weighing corresponding weight portions of raw materials according to the formula ratio; S30: firstly, α-cyanoacrylate monomer, stripping agent, polymerization inhibitor, accelerator and thickener are put into a reaction kettle, heated and vacuum stirred until completely dissolved; S40: adding antioxidant and thixotropic agent to the reactor after cooling; S50: After being evenly dispersed, the material is discharged to obtain a peelable nail glue instant adhesive.

9. The method for preparing the peelable instant adhesive for nail glue according to claim 8, characterized in that: The α-cyanoacrylic acid monomer is α-cyanoacrylic acid methoxyethyl ester; The accelerator includes one or more of octadecanoic crown ether-6 and dibenzooctadecanoic crown ether-6, and is used to adjust the curing speed; The stripping agent includes one or more of ethyl acetate, dimethyl carbonate, dibutyl carbonate, and dioctyl carbonate; The polymerization inhibitor includes one or more of hydroquinone, pyrogallic acid, methanesulfonic acid, propyl gallate, pyrogallol, boron trifluoride etherate, and sulfur dioxide; The thickener includes one or more of polymethyl methacrylate, polyethyl methacrylate, and polybutyl methacrylate; The antioxidant includes one or more of tetrahydrophthalic anhydride and phthalic anhydride; and the thixotropic agent is fumed silica.

10. The method for preparing the peelable instant adhesive for nail glue according to claim 9, characterized in that: In step S10, the drying temperature is 80°C to 84°C for at least 4 hours, and the environment is dehumidified to control the humidity below 60%RH. In step S30, 50 to 90 parts by weight of α-cyanoacrylate monomer are added to the reactor, and stirring is started at a stirring speed of 300-500 rpm; 0.01 to 0.05 parts by weight of inhibitor are added to the reactor, the stirring speed is controlled at 300-500 rpm, and stirring is continued; 3 to 30 parts by weight of stripping agent are added to the reactor, the stirring speed is controlled at 300-500 rpm, and stirring is continued; 0.01 to 0.05 parts by weight of accelerator are added to the reactor, the stirring speed is controlled at 300-500 rpm, and stirring is continued; 5 to 10 parts by weight of thickener are added, the temperature is started to rise, and as the temperature rises, the stirring speed is gradually increased until the temperature reaches 65-70°C, and the stirring speed gradually reaches 800 rpm; In step S40, after the liquid in the reaction kettle is completely dissolved and clarified, the temperature is lowered to room temperature, and 0.1 to 1 parts by weight of an antioxidant and 0.5 to 1.5 parts by weight of a thixotropic agent are added, and the mixture is stirred thoroughly at 800 rpm.