Synthetic resin, adhesive for medical oxygen anesthesia mask, and preparation method and application thereof

Abstract

This invention discloses a synthetic resin, adhesive, and their preparation method and application for medical oxygen anesthesia masks. The synthetic resin is prepared by ring-opening reaction of KH-560 and KH-550 to generate a hydroxyl-containing siloxane intermediate, which is then used to modify polyurethane. The adhesive comprises the following components by weight: 100 parts synthetic resin, 45-95 parts reactive diluent, and 4-14 parts photoinitiator. The reactive diluent mainly includes isobornyl acrylate, N,N-dimethylacrylamide, tetrahydrofuran acrylate, and hydroxyethyl acrylate. Compared with the prior art, the adhesive prepared from the modified resin synthesized in this invention has the characteristics of rapid curing under LED light irradiation, low energy consumption, and ease of automated production; good surface drying properties, excellent flexibility, no bubbling under constant temperature and humidity, and strong adhesion to the PC material cup and PVC material airbag of the oxygen mask.

Description

Technical Field

[0001] This invention relates to the field of adhesive preparation technology, and in particular to a synthetic resin, adhesive, preparation method, and application for medical oxygen anesthesia masks. Background Technology

[0002] Oxygen anesthesia masks are primarily used in medical surgeries to assist in oxygen supply and anesthetic drug delivery. They typically consist of the following components: a face cup, an air bladder, a connector, and a securing strap. The face cup (mask cup) is the main part that contacts the patient's mouth and nose, and is usually made of polycarbonate (PC) or medical-grade silicone. The air bladder, located at the edge of the face cup, is typically made of PVC or silicone and, when inflated, conforms to the face to minimize air leakage. Currently, in the assembly process of medical oxygen anesthesia masks, the PC face cup and PVC air bladder are usually bonded together using adhesive: adhesive is first applied to the PVC air bladder, then the PC face cup is attached, and after curing under LED light, it achieves a secure seal. The adhesive is a crucial material in the assembly of medical oxygen anesthesia masks, and its performance directly affects the product's safety and reliability.

[0003] Currently, this type of adhesive on the market generally has some problems, mainly as follows: 1. Slow curing speed, generally requiring complete curing within 5 seconds under LED light; 2. Poor flexibility, the adhesive layer of the PC face cup and PVC airbag of the oxygen mask is prone to cracking after curing; 3. Poor weather resistance, with air bubbles appearing in the adhesive layer after constant temperature and humidity, resulting in poor adhesion; 4. Insufficient bonding strength, causing the PC face cup and PVC airbag to easily detach.

[0004] There are many types of adhesives available in the current technology. For example, Chinese patent CN109929503A discloses a low-odor, high-toughness UV-curable adhesive and its preparation method. The adhesive is characterized by low odor, high toughness, resistance to ethylene oxide sterilization and damp heat aging, and passing biological evaluation. It can be used for bonding common medical device materials such as PVC, PC, ABS, and K-resin. However, experiments have shown that the adhesive prepared by this patent cannot achieve rapid curing under LED light radiation.

[0005] For example, Chinese patent CN111073522A discloses a UV-curable epoxy adhesive for bonding PVC substrates. While the adhesive exhibits strong adhesion to PVC films, and although it uses HE20 epoxy resin and polyurethane-modified epoxy resin to replace some alicyclic epoxy resin, its flexibility is insufficient and its brittleness is too high, failing to meet the bonding requirements for PC face mask cups and PVC airbags in medical masks.

[0006] For example, Chinese patent CN104178038 discloses an instant-drying solvent-free adhesive for bonding PVC pipes. This adhesive has advantages such as good resistance to damp heat, good aging resistance, good toughness, good migration resistance, and high bonding strength to PVC. However, the main raw material used in this paper, cyanoacrylate, has certain toxicity to humans and should be used with caution in the medical field.

[0007] In view of this, the present invention proposes a synthetic resin, an adhesive, a preparation method thereof, and an application for a medical oxygen anesthesia mask, in order to solve the above-mentioned problems. Summary of the Invention

[0008] In view of the shortcomings of the prior art, the first objective of the present invention is to provide a synthetic resin for medical oxygen anesthesia masks that combines the advantages of strong adhesion and weather resistance of organosilicon, polyurethane and acrylate.

[0009] A synthetic resin for use in medical oxygen anesthesia masks, with the structural formula shown in Formula I:

[0010] In Equation I, R1 represents any of the following structural formulas;

[0011]

[0012] R2 represents a 1,4-butanediol alkyl segment; R3 represents an acrylic acid alkyl segment; R4 represents an alkyl group with 1 to 20 carbon atoms.

[0013] To address the shortcomings of existing technologies, a second objective of this invention is to provide a method for preparing a synthetic resin for a medical oxygen anesthesia mask. This method involves reacting KH-560 and KH-550 in a 2:1 molar ratio via a ring-opening reaction to generate a hydroxyl-containing siloxane intermediate. This intermediate is then modified with polyurethane to obtain an adhesive resin for the medical oxygen anesthesia mask.

[0014] A method for preparing a synthetic resin for use in medical oxygen anesthesia masks includes the following steps:

[0015] Step 1: Under nitrogen protection, KH-560 (γ-glycidyl etheroxypropyltrimethoxysilane) and KH-550...

[0016] A mixture of (3-triethoxysilyl-1-propylamine) was heated to 50–70 °C and reacted for 0.3–1 h, then further heated to 80–100 °C.

[0017] After reacting for 3–5 hours, an intermediate C1 containing a tertiary amine and a hydroxyl group is obtained. The molar ratio of KH-560 to KH-550 is 2:1. The reaction equation is as follows:

[0018]

[0019] Step two: Diisocyanate and polyester polyol are placed in a reactor equipped with stirring and reflux condensation, and reacted at 65–85°C for 2–3 hours. Nitrogen gas is introduced during the reaction. After the reaction, intermediate C2 is obtained, in which the mass fraction of diisocyanate added is 18–32, and the mass fraction of polyester polyol added is 51–75. The reaction equation is as follows:

[0020]

[0021] Step 3: Add 1.6–3.1 parts by mass of chain extender, 0.5–1.2 parts by mass of intermediate C1, and a solvent to control the viscosity of the reaction system dropwise into the reactor, and continue the reaction to generate intermediate C3. The reaction equation is as follows:

[0022]

[0023] Step 4: Add 5-14 parts by mass of (meth)acrylate hydroxy ester containing the polymerization inhibitor to the reactor dropwise over 1 hour, while stirring during the addition. After the addition is complete, raise the temperature to react. The reaction equation is as follows. Measure the NCO value of the reaction system during the reaction. Stop the reaction when the NCO value of the system reaches the theoretically calculated value. The reactants contain synthetic resin.

[0024]

[0025] As a preferred technical solution, the diisocyanate is one or both of 4,4'-dicyclohexylmethane diisocyanate (HMDI) and isophorone diisocyanate (IPDI).

[0026] As a preferred technical solution, the polyester polyol is prepared by reacting acrylic acid and 1,4-butanediol.

[0027] As a preferred technical solution, the polyester polyol is one or more of the following: 5400-1000, 5400-1000A, 5400-2000, 5400-2000A, 5400-2000C from Changxing Materials Industry Co., Ltd.; and HDPOL-4410 and HDPOL-4420 from Huide Technology Co., Ltd.

[0028] As a preferred technical solution, the chain extender in step three is 1,4-butanediol (BDO).

[0029] As a preferred technical solution, the solvent in step three is acetone.

[0030] As a preferred technical solution, the (meth)acrylate hydroxy ester in step four includes one or more of hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, and hydroxypropyl methacrylate, more preferably hydroxyethyl acrylate.

[0031] As a preferred technical solution, the polymerization inhibitor is one or more of hydroquinone (HQ), p-hydroxyanisole (MEHQ), 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxy radical, and 2,2,6,6-tetramethylpiperidine-1-oxy radical.

[0032] In view of the shortcomings of the prior art, the third objective of the present invention is to provide an adhesive for medical oxygen anesthesia masks that can cure rapidly and has excellent adhesive and mechanical properties.

[0033] An adhesive for use in medical oxygen anesthesia masks comprises the following components in parts by weight:

[0034] 45-95 parts of reactive diluent;

[0035] 4-14 parts of photoinitiator;

[0036] 100 parts of synthetic resin.

[0037] As a preferred technical solution, the reactive diluent comprises the following components by mass fraction: 17%–52% isobornyl acrylate (IBOA), 25%–63% N,N-dimethylacrylamide (DMAA), 5%–28% tetrahydrofuran acrylate (THFA), and 5%–21% hydroxyethyl acrylate (HEA). IBOA exhibits high reactivity, combining high hardness and good flexibility after curing, with a high Tg and outstanding water resistance. It also demonstrates excellent adhesion to PVC and PC plastics, enhancing the adhesion between the coating and the substrate. DMAA is highly reactive and has a micro-etching and bonding effect on various plastic substrates such as PC, PVC, ABS, PMMA, PP, and PE, further promoting adhesion. THFA possesses good flexibility, resistance to yellowing, and good substrate wettability, exhibiting particularly excellent adhesion to substrates such as PC. Adding it to the adhesive formulation can further strengthen the adhesion between the oxygen mask's airbag and face cup.

[0038] As a preferred technical solution, the photoinitiator includes one or both of photoinitiator TPO-L and photoinitiator TPO.

[0039] To address the shortcomings of existing technologies, a fourth objective of this invention is to provide an adhesive for use in medical oxygen anesthesia masks. The adhesive is used to bond the PVC airbag and PC face cup of the medical oxygen anesthesia mask and is cured by LED light.

[0040] Compared with the prior art, the beneficial effects of the present invention are:

[0041] 1. This invention involves a ring-opening reaction of KH-560 and KH-550 at a molar ratio of 2:1 to generate a hydroxyl-containing siloxane intermediate. This intermediate is then modified with polyurethane to obtain a synthetic resin for use in medical oxygen anesthesia masks. This synthetic resin is a silicone-modified polyurethane acrylate resin, combining the advantages of silicone, polyurethane, and acrylate. The synthesized hydroxyl-containing siloxane intermediate possesses the characteristics of both KH-560 and KH-550. As a "molecular bridge," the siloxane intermediate simultaneously anchors the interface of the two materials through chemical bonds, significantly improving the adhesive strength of the synthetic resin. Simultaneously, the siloxane structure endows the resin with excellent hydrophobicity, reducing water molecule penetration, preventing hydrolysis of the adhesive interface under humid and hot conditions, and improving weather resistance.

[0042] 2. The adhesive for medical oxygen anesthesia masks prepared by this invention has the characteristics of fast curing speed under LED light, energy saving, no VOC emission, and excellent performance of cured products. It is an environmentally friendly green adhesive.

[0043] 3. The adhesive prepared in this invention is used for bonding medical oxygen anesthesia masks. It has high bonding strength and can firmly bond the PC material cup and PVC material airbag of the oxygen mask. At the same time, it also has the advantages of good flexibility, and does not bubble or fall off during constant temperature and humidity tests. Attached Figure Description

[0044] Figure 1 This is a schematic diagram of the adhesive of the present invention applied to a medical oxygen anesthesia mask. Detailed Implementation

[0045] The following examples further illustrate the features of the present invention and other related features in detail, so as to facilitate understanding by those skilled in the art.

[0046] Example 1

[0047] Example 1 of the present invention provides resin A and a medical oxygen anesthesia mask adhesive. Resin A is prepared by the following steps:

[0048] Step 1, Preparation of intermediate C1: Under nitrogen protection, in a four-necked flask equipped with a mechanical stirrer, dropping funnel, thermometer and reflux condenser, 110.73 g of KH-560 and 52.87 g of KH-550 were mixed and heated to 50-70 °C for 0.5 h, then heated to 80-100 °C for 3-5 h. The characteristic peak of the epoxy group was monitored every 20 minutes using real-time infrared spectroscopy. When no characteristic peak of the epoxy group was detected in the system, the reaction was stopped, and an intermediate C1 containing a tertiary amine and a hydroxyl group was obtained. After cooling, it was sealed for later use.

[0049] Step 2, Preparation of intermediate C2: In a four-necked flask equipped with a mechanical stirrer, dropping funnel, thermometer and reflux condenser, 50g of IPDI (diisocyanate) was added, and 225g of HDPOL-4420 (polyester polyol) was added dropwise within a temperature range of 60-70℃. The temperature was raised to 65-85℃ and the reaction was carried out for 2-3 hours. The NCO value was measured every 20 minutes. The reaction was stopped when the theoretical value was reached, thus obtaining an intermediate C2 with one NCO at each end.

[0050] Step 3, preparation of intermediate C3: In the temperature range of 50-60℃, add 5.07g of BDO (chain extender) and 0.88g of intermediate C1 dropwise to the four-necked flask in step 2. After the addition is complete, raise the temperature to 65-75℃ and react for 1-1.5h. Stop the reaction when NCO reaches the theoretical value. During the reaction, a small amount of acetone is added to control the viscosity of the reaction system.

[0051] Step 4: Cool down to 50-60℃, and while stirring, add HEA (hydroxy acrylate) containing 0.007g of MEHQ (polymerization inhibitor) dropwise to the above prepolymer. The addition should be completed within 1 hour. After the addition is complete, raise the temperature to 65-75℃ and react for 2-3 hours to obtain resin A (unsaturated acrylate-terminated polyurethane acrylate prepolymer).

[0052] According to Table 1, resins B to N were prepared by modifying the raw material formula and following the preparation method of Example 1.

[0053] Table 1 shows the formulations of resins A through N.

[0054]

[0055] The adhesives of Examples 1-18 and Comparative Example 13 were prepared by mixing the components evenly according to the raw material formulations in Tables 2-4. The mass unit of the components in the formulation is g.

[0056] Table 2 shows the adhesive formulations for Examples 1-12.

[0057]

[0058]

[0059] Table 3 shows the adhesive formulations for Examples 13-18.

[0060] project Example 13 Example 14 Example 15 Example 16 Example 17 Example 18 Resin A 100 Resin C 100 Resin D 100 Resin F 100 Resin G 100 Resin I 100 IBOA 29.5 25.0 21.0 24.5 19.0 18.0 DMAA 34.5 26.0 22.0 27.5 33.0 35.5 THFA 5.0 10.5 9.0 10.5 11.5 13.0 HEA 8.5 8.0 7.0 7.0 9.5 10.0 TPO-L 9.05 6.6 9.0 TPO 8.25 7.25 7.95

[0061] Table 4 shows the adhesive formulations for Comparative Examples 1–13.

[0062]

[0063]

[0064] Performance testing

[0065] 1. Hardness test: The hardness of the cured dry adhesive was measured using a Shore hardness tester.

[0066] 2. Curing speed test: using light intensity of 500mW / cm² 2 Illuminate with LED lights and time with a stopwatch.

[0067] 3. Flexibility test: Tested according to GB / T 1731-2020 standard, shaft bending 3mm.

[0068] 4. Weather resistance test: In accordance with GB / T10586-1989 standard, the cured dry adhesive will be placed in an environment of 85℃ / 85%RH for 15 days for testing.

[0069] 5. Peel Strength Test: Following the ASTM D3330 test method, apply adhesive to the PVC air bladder of the oxygen anesthesia mask, then adhere the PC cup. After curing, test the performance. The dry adhesive thickness is 200µm. Figure 1 As shown, the PVC airbag 3 is connected to the PC cup 1 through the adhesive layer 2 to form a medical oxygen anesthesia mask.

[0070] Adhesion performance evaluation:

[0071] If the PVC airbag and PC cup of the oxygen anesthesia mask can be easily torn apart without damaging the film on the surface of the PVC airbag, it indicates poor adhesion, and is marked as ○.

[0072] If the PVC airbag and PC cup of the oxygen anesthesia mask are difficult to tear apart and the film on the surface of the PVC airbag is not damaged, it indicates that the adhesion is average, and is marked as □.

[0073] The PVC airbag and PC cup of the oxygen anesthesia mask are firmly bonded together and difficult to tear, indicating good adhesion, which is marked as △.

[0074] Table 5 Performance test results of Examples 1-18 and Comparative Examples 1-13

[0075]

[0076] (1) As shown in Table 5, by comparing the test results of Example 1 and Comparative Examples 1-2, it can be seen that the amount of intermediate C1 added in Example 1 is within the range specified in the invention, and the overall performance is excellent. However, the amount of intermediate C1 added in Comparative Example 1 is lower than the range specified in the invention, which results in poor adhesion. This is because intermediate C1 in the invention is obtained by the ring-opening reaction of KH-550 and KH-560. This intermediate acts as a "molecular bridge" and anchors the interface of the two materials simultaneously through chemical bonds, significantly improving the bonding strength of the PVC airbag and PC face cup of the oxygen mask. At the same time, the siloxane structure gives the adhesive layer excellent hydrophobicity, with less water molecule penetration, which can avoid hydrolysis of the bonding interface in a humid and hot environment.

[0077] The amount of intermediate C1 added in Comparative Example 2 exceeds the scope of the invention, resulting in poor compatibility. This is because the polarity difference between the siloxane segments and the polyurethane matrix is ​​significant, and excessive introduction may lead to microphase separation and local agglomeration, thereby affecting the bonding effect.

[0078] (2) By comparing the test results of Example 1 and Comparative Examples 3-5, it can be seen that when the amount of IBOA added is insufficient or exceeds the range specified in the invention, the PVC airbag and PC cup of the oxygen anesthesia mask will not adhere firmly. The main reason is that after curing, IBOA has both high hardness and good flexibility, a high Tg, and outstanding wear and water resistance. It has excellent adhesion to PVC and PC plastics, which can improve the adhesion between the coating and the substrate. Furthermore, IBOA is a highly reactive monofunctional acrylate monomer that can quickly participate in UV curing or thermosetting reactions, making it perform well in the LED curing process and achieving the purpose of rapid curing.

[0079] When the amount of IBOA added in Comparative Examples 3 and 4 was too low, the adhesion between the oxygen mask's airbag and cup was insufficient.

[0080] When the amount of IBOA added in Comparative Example 5 is too high, it will cause the overall Tg of the adhesive to be too high, the coating hardness to increase, and the flexibility to decrease. As a result, the airbags and cups of the oxygen mask will be prone to cracking and the adhesion will be insufficient.

[0081] (3) By comparing the test results of Example 2 and Comparative Examples 6 to 8, it can be seen that if the amount of DMAA added is lower or exceeds the dosage range in this invention, the PVC material airbag and the PC material cup of the oxygen anesthesia mask will not adhere firmly.

[0082] When the amount of DMAA added in Comparative Example 7 was too low, the adhesion between the airbag and the face cup of the oxygen mask was insufficient. This is mainly because DMAA has a micro-etching and bonding effect on various plastic substrates such as PC, PVC, ABS, PMMA, PP, and PE, and can better adhere to these plastic substrates.

[0083] When the amount of DMAA added in Comparative Example 8 is too high, it will cause the coating to cure slowly under LED light and fail to meet the requirement of complete curing within 5 seconds, because DMAA will cause the adhesive to cure slowly under LED light irradiation.

[0084] (4) By comparing the test results of Example 5 and Comparative Examples 9 to 11, it can be seen that if the amount of THFA added is lower or higher than the dosage range in this invention, the PVC airbag and the PC cup of the oxygen anesthesia mask will not adhere firmly.

[0085] When the amount of THFA added in Comparative Examples 9-10 is too low, the adhesion between the airbag and the face cup of the oxygen mask is insufficient. This is mainly because THFA has good flexibility, resistance to yellowing and substrate wettability, and has excellent adhesion to substrates such as PC. Adding it to the adhesive formulation can make the adhesion between the airbag and the face cup of the oxygen mask stronger.

[0086] When the amount of THFA added in Comparative Example 11 is too high, it will not only excessively soften the cured film and reduce the hardness of the coating, but also, the molecular structure of THFA is less responsive to long-wavelength LED light (such as 365-405nm). When the amount added is too high, it will hinder the effective reaction of the photoinitiator, resulting in insufficient deep curing and the phenomenon of incomplete internal curing, which will affect the adhesion.

[0087] (5) By comparing the test results of Example 11 and Comparative Examples 12-13, it can be seen that if the amount of photoinitiator added is insufficient, the number of free radicals will be insufficient, and the polymerization reaction of monomers and prepolymers will not be able to be initiated quickly, resulting in incomplete curing. This will affect the adhesion of the airbag and face cup of the oxygen mask, resulting in poor adhesion. When the amount of photoinitiator added is too much, it will absorb too much ultraviolet light, resulting in excessive surface curing, but the internal curing reaction is limited, causing the coating surface to be over-cured while the interior is not fully cross-linked, resulting in insufficient adhesion strength between the airbag and face cup of the oxygen mask.

[0088] In summary, an appropriate photoinitiator fraction ensures both a fast curing speed and avoids the problem of over-curing on the surface of the coating while the interior remains incompletely cured and cross-linked. The reactive diluent not only adjusts the adhesive to a suitable viscosity, but its main components, IBOA and DMAA, are highly reactive acrylic monomers that accelerate the curing speed of the adhesive.

[0089] The adhesive of this invention achieves rapid curing under LED light irradiation, excellent flexibility, no bubbling under constant temperature and humidity, and strong adhesion to the PC material cup and PVC material airbag of the oxygen mask by using a reasonable ratio of self-made UV polyurethane resin, reactive diluent and photoinitiator.

[0090] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A method for preparing a synthetic resin for use in medical oxygen anesthesia masks, characterized in that, Includes the following steps: Step 1: Under nitrogen protection, KH-560 and KH-550 are mixed and heated to 50-70℃ for 0.3-1h, then heated to 80-100℃ for 3-5h to obtain an intermediate C1 with a tertiary amine and a hydroxyl group. The molar ratio of KH-560 to KH-550 is 2:

1. Step 2: Diisocyanate and polyester polyol are placed in a reactor with stirring and reflux condensation, and reacted at 65-85°C for 2-3 hours. Nitrogen gas is introduced during the reaction. After the reaction, intermediate C2 is obtained, in which the mass fraction of diisocyanate added is 18-32 and the mass fraction of polyester polyol added is 51-75. Step 3: Add 1.6 to 3.1 parts by mass of chain extender, 0.5 to 1.2 parts by mass of intermediate C1, and a solvent to control the viscosity of the reaction system to the reactor, and continue the reaction to generate intermediate C3; Step 4: Add 5-14 parts by mass of (meth)acrylate hydroxy ester containing the polymerization inhibitor to the reactor dropwise over 1 hour, while stirring during the addition. After the addition is complete, heat the reactor to allow the reaction to proceed. Measure the NCO value of the reaction system during the reaction. Stop the reaction when the NCO value of the system reaches the theoretically calculated value.

2. The method for preparing a synthetic resin for a medical oxygen anesthesia mask according to claim 1, characterized in that, The diisocyanate is one or both of 4,4'-dicyclohexylmethane diisocyanate and isophorone diisocyanate.

3. The method for preparing a synthetic resin for a medical oxygen anesthesia mask according to claim 1, characterized in that, The polyester polyol is one or more of the following: 5400-1000, 5400-1000A, 5400-2000, 5400-2000A, 5400-2000C from Changxing Materials Industry Co., Ltd.; and HDPOL-4410 and HDPOL-4420 from Huide Technology Co., Ltd.

4. The method for preparing a synthetic resin for a medical oxygen anesthesia mask according to claim 1, characterized in that, The chain extender in step three is 1,4-butanediol.

5. The method for preparing a synthetic resin for a medical oxygen anesthesia mask according to claim 1, characterized in that, The (meth)acrylate hydroxy ester in step four includes one or more of hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, and hydroxypropyl methacrylate; the polymerization inhibitor is one or more of hydroquinone, p-hydroxyanisole, 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-oxy radical, and 2,2,6,6-tetramethylpiperidine-1-oxy radical, and its amount is 0.02 to 0.07% of the mass of the (meth)acrylate hydroxy ester.

6. A synthetic resin prepared by the method for preparing a synthetic resin for a medical oxygen anesthesia mask as described in any one of claims 1 to 5.

7. An adhesive for use in medical oxygen anesthesia masks, characterized in that, Includes the following components by mass: 45-95 parts of reactive diluent; 4-14 parts of photoinitiator; 100 parts of synthetic resin; The synthetic resin thereon is the synthetic resin prepared by the preparation method according to any one of claims 1 to 5 or the synthetic resin according to claim 6.

8. The adhesive for a medical oxygen anesthesia mask according to claim 7, characterized in that, The reactive diluent comprises the following components by mass fraction: 12%~57% isobornyl acrylate, 17%~56% N,N-dimethylacrylamide, 13%~48% tetrahydrofuran acrylate and 3%~20% hydroxyethyl acrylate.

9. The adhesive for a medical oxygen anesthesia mask according to claim 7, characterized in that, The photoinitiator includes one or both of ethyl 2,4,6-trimethylbenzoylphenylphosphonate and 2,4,6-trimethylbenzoyl-diphenylphosphine oxide.

10. The application of an adhesive for a medical oxygen anesthesia mask as described in any one of claims 7 to 9, characterized in that, The adhesive is used to bond the PVC airbag and PC face cup of the medical oxygen anesthesia mask, and is cured by LED light.

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