Synthetic resin and adhesive for medical oxygen anaesthetic mask as well as preparation method and application of synthetic resin and adhesive

Abstract

The invention discloses synthetic resin and an adhesive for a medical oxygen anaesthetic mask as well as a preparation method and application of the synthetic resin and the adhesive, and the synthetic resin is prepared by the following steps: carrying out ring-opening reaction on KH-560 and KH-550 to generate a siloxane intermediate with hydroxyl, and modifying polyurethane by using the siloxane intermediate; the adhesive comprises the following components in parts by weight: 100 parts of synthetic resin, 45-95 parts of a reactive diluent and 4-14 parts of a photoinitiator, and the reactive diluent mainly comprises isobornyl acrylate, N, N-dimethylacrylamide, tetrahydrofuran acrylate and hydroxyethyl acrylate; compared with the prior art, the adhesive prepared from the synthesized modified resin has the advantages that the adhesive can be quickly cured under the irradiation of an LED lamp, the energy consumption is low, and automatic production is facilitated; the oxygen mask has the characteristics of good surface dryness, good flexibility, no blistering at constant temperature and humidity, firmness of a PC (Poly Carbonate) surface cup and a PVC (Polyvinyl Chloride) air bag for bonding the oxygen mask, and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of adhesive preparation, and particularly relates to a synthetic resin for a medical oxygen anesthesia mask, an adhesive, a preparation method and application thereof. BACKGROUND

[0002] The oxygen anesthesia mask is mainly used for auxiliary oxygen supply and anesthetic drug transmission in medical operations, and generally comprises the following components: a face cup, an air bag, a joint and a fixing belt. The face cup (mask cup) is a main body part contacting the mouth and nose of a patient, and is made of polycarbonate (PC) or medical silica gel. The air bag is located at the edge of the face cup and is generally made of PVC or silica gel, and can be attached to the face after being inflated to reduce air leakage. At present, in the assembly process of the medical oxygen anesthesia mask, the assembly of the PC face cup and the PVC air bag is usually fixed by adhesive: the adhesive is applied on the PVC air bag, and then the PC face cup is attached, and the adhesive plays a sealing and fixing role after LED lamp curing. The adhesive is a key material in the assembly of the medical oxygen anesthesia mask, and its performance directly affects the safety and reliability of the product.

[0003] At present, such adhesives on the market generally have some problems, mainly including the following points: 1. slow photocuring speed, which generally requires complete curing within 5 seconds under LED lamp irradiation; 2. poor flexibility, the adhesive layer of the PC face cup and the PVC air bag is prone to cracking after curing; 3. poor weather resistance, the adhesive layer has bubbles after constant temperature and humidity, and the adhesion is not firm; 4. insufficient adhesion strength, which causes the PC face cup and the PVC air bag to easily fall off.

[0004] There are various adhesive products in the prior art, for example, a low-odor and high-toughness ultraviolet light curing adhesive and a preparation method thereof are disclosed in Chinese Patent No. CN109929503A. The adhesive has the characteristics of small product odor, high toughness, resistance to ethylene oxide sterilization and wet heat aging, and qualified biological evaluation performance, and can be used for the adhesion between common medical devices such as PVC, PC, ABS, K-resin and other high molecular materials. Experiments have proved that the adhesive prepared by the patent cannot achieve rapid curing under LED lamp irradiation.

[0005] For example, a UV light curing PVC substrate adhesion special epoxy adhesive is disclosed in Chinese Patent No. CN111073522A. The adhesive has strong adhesion to the PVC film. Although the above-mentioned adhesive uses epoxy resin HE20 and polyurethane modified epoxy resin to replace part of the alicyclic epoxy resin, the flexibility of the epoxy adhesive is still not enough, and the brittleness is large, which cannot meet the adhesion effect of the PC face cup and the PVC air bag of the medical mask.

[0006] Also for example, the Chinese patent with publication number CN104178038 discloses a PVC pipeline bonding instant dry solvent-free adhesive. The adhesive has good heat and humidity resistance, good aging resistance, good toughness, good migration resistance and high bonding strength to PVC. The main material used in the document, cyano acrylate, has certain toxicity to the human body, and should be used with caution in the medical field.

[0007] In view of this, the present application proposes a synthetic resin for a medical oxygen anesthesia mask, an adhesive, a preparation method and application thereof, to solve the above problems. SUMMARY

[0008] In view of the deficiencies of the prior art, the first object of the present application is to provide a synthetic resin for a medical oxygen anesthesia mask, which combines the strong adhesion, weather resistance and other advantages of silicone, polyurethane and acrylate.

[0009] A synthetic resin for a medical oxygen anesthesia mask, the structural formula is shown as formula I:

[0010] In formula I, R1 represents any one of the following structural formulae;

[0011]

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

[0013] In view of the deficiencies of the prior art, the second object of the present application is to provide a preparation method of a synthetic resin for a medical oxygen anesthesia mask, which opens ring reaction of KH-560 and KH-550 at a molar ratio of 2:1 to generate a siloxane intermediate with hydroxyl groups, and modifies by polyurethane to prepare an adhesive resin for a medical oxygen anesthesia mask.

[0014] A preparation method of a synthetic resin for a medical oxygen anesthesia mask, comprising the following steps:

[0015] Step one, under nitrogen protection, mix KH-560 (gamma-glycidoxypropyltrimethoxysilane), KH-550

[0016] (3-triethoxysilyl-1-propylamine) and heat to 50-70 DEG C for 0.3-1 h, and then to 80-100 DEG C

[0017] React for 3-5 h to obtain an intermediate C1 with tertiary amine and hydroxyl groups, the molar ratio of KH-560 to KH-550 is 2:1, and the reaction equation is as follows:

[0018]

[0019] Step two, the diisocyanate, polyester polyol is placed in a reactor with stirring, condensation reflux effect, reaction at 65-85℃ for 2-3h, the reaction process through nitrogen, after reaction obtained intermediate C2, wherein the mass fraction of diisocyanate is 18-32, the mass fraction of polyester polyol is 51-75, the reaction equation is as follows:

[0020]

[0021] Step three, the reactor is added dropwise 1.6-3.1 mass fraction of chain extender, 0.5-1.2 mass fraction of intermediate C1, and solvent for controlling the viscosity of the reaction system, and then the intermediate C3 is generated, and the reaction equation is as follows:

[0022]

[0023] Step four: 5-14 mass fraction of (methyl) acrylic acid hydroxy ester dissolved with polymerization inhibitor is added dropwise into the reactor, and the dropping is completed within 1h, and the stirring is maintained during the dropping; after the dropping is completed, the reaction is carried out by heating, and the reaction equation is as follows: the NCO value of the reaction system is measured during the reaction, and the reaction is stopped when the NCO value of the system reaches the theoretical calculation value, and the reaction product contains a synthetic resin.

[0024]

[0025] As a preferred technical solution, the diisocyanate is one or both of 4,4'-dicyclohexyl methane 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 Changxing Material Industrial Co., Ltd. 5400-1000, 5400-1000A, 5400-2000, 5400-2000A, 5400-2000C; Huitong Technology HDPOL-4410, HDPOL-4420.

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

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

[0030] As a preferred technical solution, the (meth)acrylic hydroxy ester of step four includes one or more of hydroxyethyl acrylate, hydroxyethyl methacrylate, hydroxypropyl acrylate, and hydroxypropyl methacrylate, and 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-oxyl, and 2,2,6,6-tetramethylpiperidine-1-oxyl.

[0032] In view of the deficiencies of the prior art, a third object of the present application is to provide an adhesive for a medical oxygen anesthesia mask. The adhesive can be quickly cured and has excellent adhesion and mechanical properties.

[0033] An adhesive for a medical oxygen anesthesia mask includes the following components by mass fraction:

[0034] Active diluent 45-95 parts;

[0035] Photoinitiator 4-14 parts;

[0036] Synthetic resin 100 parts.

[0037] As a preferred technical solution, the active diluent includes the following components by mass fraction: 17% to 52% isobornyl acrylate (IBOA), 25% to 63% N,N-dimethyl acrylamide (DMAA), 5% to 28% tetrahydrofurfuryl acrylate (THFA), and 5% to 21% hydroxyethyl acrylate (HEA). Among them, IBOA has high reactivity, high hardness and good flexibility after curing, high Tg, excellent water resistance, and excellent adhesion to PVC and PC plastic, which can improve the adhesion of the coating to the substrate; DMAA has high reactivity and can etch and engage various plastic substrates such as PC, PVC, ABS, PMMA, PP, and PE, thereby better promoting adhesion; THFA has good flexibility, yellowing resistance, and substrate wetting properties, and has excellent adhesion to PC and other substrates, and adding it to the adhesive formulation can make the gas bag and face cup of the oxygen mask more firmly bonded.

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

[0039] In view of the deficiencies of the prior art, a fourth object of the present application is to provide an application of an adhesive for a medical oxygen anesthesia mask. The adhesive is used to bond the PVC gas bag and PC face cup of the medical oxygen anesthesia mask, and is cured using an LED lamp.

[0040] Compared with the prior art, the present application has the following advantages:

[0041] 1. The present application reacts KH-560 and KH-550 in a molar ratio of 2:1 to generate a siloxane intermediate with hydroxyl groups, which is modified by polyurethane to prepare a synthetic resin for medical oxygen anesthesia masks. The synthetic resin is a silicone-modified polyurethane acrylate resin that combines the advantages of silicone, polyurethane, and acrylate. The synthesized siloxane intermediate with hydroxyl groups has the properties of both KH-560 and KH-550, and the siloxane intermediate acts as a "molecular bridge" to anchor the interfaces of the two materials through chemical bonding, significantly improving the bonding strength of the synthetic resin. At the same time, the siloxane structure gives the resin excellent hydrophobicity, reduces water molecule penetration, avoids hydrolysis of the bonding interface in a humid environment, and improves weather resistance.

[0042] 2. The present application prepares an adhesive for medical oxygen anesthesia masks, which has the characteristics of fast LED lamp curing speed, energy saving, no VOC emission, excellent performance of the cured product, and is an environmentally friendly green adhesive.

[0043] 3. The adhesive prepared by the present application is used for bonding medical oxygen anesthesia masks, which has high bonding strength and can firmly bond the PC material face cup and PVC material air bag of the oxygen mask. At the same time, it has good flexibility, does not blister and fall off in constant temperature and humidity tests, etc. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 is a schematic diagram of the adhesive of the present application applied to a medical oxygen anesthesia mask. DETAILED DESCRIPTION

[0045] The features of the present application and other related features are further described in detail below through examples for the understanding of technicians in the same industry.

[0046] Example 1

[0047] Example 1 of the present application provides resin A and an adhesive for medical oxygen anesthesia masks. Resin A is prepared by the following steps:

[0048] Step one, preparation of intermediate C1: under nitrogen protection, 110.73g of KH-560 and 52.87g of KH-550 are mixed in a four-necked flask equipped with a mechanical stirrer, a dropping funnel, a thermometer, and a reflux condenser, heated to 50-70℃ for 0.5h, then heated to 80-100℃ for 3-5h, and the characteristic peak of epoxy groups is monitored every 20 minutes with real-time infrared, when no characteristic peak of epoxy groups is monitored, the reaction is stopped, and an intermediate C1 with tertiary amine and hydroxyl groups is obtained, which is sealed after cooling.

[0049] Step two, preparation of intermediate C2: in a four-necked flask equipped with a mechanical stirrer, a dropping funnel, a thermometer and a reflux condenser, 50 g of IPDI (diisocyanate) was added, 225 g of HDPOL-4420 (polyester polyol) was added dropwise at a temperature of 60-70 °C, the temperature was raised to 65-85 °C and the reaction was carried out for 2-3 h, the NCO value was measured every 20 min, and the reaction was stopped when the theoretical value was reached, thus obtaining an intermediate C2 having two NCO groups at both ends.

[0050] Step three, preparation of intermediate C3: 5.07 g of BDO (chain extender) and 0.88 g of intermediate C1 were added dropwise to the four-necked flask of step two at a temperature of 50-60 °C, and then the temperature was raised to 65-75 °C and the reaction was carried out for 1-1.5 h, the reaction was stopped when the NCO value reached the theoretical value, and a small amount of acetone was added during the reaction to control the viscosity of the reaction system.

[0051] Step four: the temperature was lowered to 50-60 °C, and 0.007 g of MEHQ (inhibitor) dissolved in HEA (hydroxy acrylate) was added dropwise to the above-mentioned prepolymer while stirring, the dropwise addition was completed within 1 h, the temperature was raised to 65-75 °C after the dropwise addition was completed, and the reaction was carried out for 2-3 h, thus obtaining resin A (unsaturated acrylate-terminated polyurethane acrylate prepolymer).

[0052] Resins B-N were prepared according to the preparation method of Example 1 by changing the raw material formula according to Table 1.

[0053] Table 1 is the formula of resins A-N

[0054]

[0055] The adhesives of Examples 1-18 and Comparative Examples 13 were prepared by uniformly mixing the components according to the raw material formula of Table 2-4, and the mass unit of the components in the formula was g.

[0056] Table 2 is the adhesive formula of Examples 1-12

[0057]

[0058]

[0059] Table 3 is the adhesive formula of 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 is the adhesive formula of Comparative Examples 1-13

[0062]

[0063]

[0064] Performance test

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

[0066] 2. Curing speed test: use a LED lamp with light intensity of 500 mW / cm 2 , and time with a stopwatch.

[0067] 3. Flexibility test: refer to GB / T 1731-2020 standard test, bend the shaft by 3 mm.

[0068] 4. Weather resistance test: refer to GB / T10586-1989 standard, place the cured dry adhesive in an environment of 85℃ / 85%RH, and test for 15 days.

[0069] 5. Peel strength test: refer to the test method of ASTM D3330, apply the adhesive glue on the PVC airbag of the oxygen anesthesia mask, and remove the PC face cup, test the performance after curing, and the dry adhesive thickness is 200um. As shown, the PVC airbag 3 is connected with the PC face cup 1 through the adhesive layer 2 to form a medical oxygen anesthesia mask. Figure 1

[0070] Adhesion performance evaluation:

[0071] If the PVC airbag and PC face cup of the oxygen anesthesia mask can be easily torn apart and the film surface of the PVC airbag is not damaged, it indicates poor adhesion, marked as o;

[0072] If the PVC airbag and PC face cup of the oxygen anesthesia mask are relatively difficult to tear apart and the film surface of the PVC airbag is not damaged, it indicates general adhesion, marked as □;

[0073] If the PVC airbag and PC face cup of the oxygen anesthesia mask are firmly bonded and difficult to tear apart, it indicates good adhesion, marked as Δ.

[0074] Table 5 Performance test results of examples 1-18 and comparative examples 1-13

[0075]

[0076] ​(1) From Table 5, by comparing the test results of Example 1, Comparative Examples 1-2, it can be seen that the intermediate C1 addition amount of Example 1 is within the range specified in the application, and the comprehensive performance is excellent. However, the intermediate C1 addition amount of Comparative Example 1 is lower than the range in the application, and poor adhesion may occur, because the intermediate C1 in the application is prepared by ring-opening reaction of KH-550 and KH-560, which acts as a "molecular bridge" and anchors the interface of the two materials through chemical bonding, significantly improving the adhesion 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, less water molecule penetration, and can avoid the hydrolysis of the adhesive interface in a humid environment.

[0077] The intermediate C1 addition amount of Comparative Example 2 exceeds the range of the application, and poor compatibility may occur, because the polarity difference between the siloxane segment and the polyurethane matrix is large, and excessive introduction may cause micro-phase separation and form local agglomeration, thereby affecting the adhesion effect.

[0078] (2) By comparing the test results of Example 1, Comparative Examples 3-5, it can be seen that when the IBOA addition amount is insufficient or exceeds the range in the application, the PVC material airbag and PC material face cup of the oxygen anesthesia mask may not be firmly bonded. The main reason is that IBOA has high hardness and good flexibility after curing, has a high Tg, and has outstanding wear resistance and water resistance, and has excellent adhesion to PVC and PC plastic, which can improve the adhesion of the coating to the substrate. Moreover, IBOA is a high-reactivity monofunctional acrylate monomer that can quickly participate in UV curing or thermal curing reactions, making it perform well in LED curing and achieving rapid curing.

[0079] When the IBOA addition amount in Comparative Examples 3-4 is too low, the airbag and face cup of the oxygen mask may not be bonded well.

[0080] When the IBOA addition amount in Comparative Example 5 is too high, the overall Tg of the adhesive may be too high, the coating hardness may increase, and the flexibility may decrease, thereby the airbag and face cup of the oxygen mask may be prone to cracking and may not be bonded well.

[0081] (3) By comparing the test results of Example 2, Comparative Examples 6-8, it can be seen that when the DMAA addition amount is lower than or exceeds the amount range in the application, the PVC material airbag and PC material face cup of the oxygen anesthesia mask may not be firmly bonded.

[0082] When the DMAA addition amount in Comparative Example 7 is too low, the airbag and face cup of the oxygen mask may not be bonded well; mainly because DMAA has a mild etching and occlusion effect on PC, PVC, ABS, PMMA, PP, PE, and other types of plastic substrates, and can better adhere to the above plastic substrates.

[0083] When the amount of DMAA in Comparative Example 8 is too high, it will cause the LED light curing speed of the coating to slow down, and it cannot meet the requirement of complete curing within 5s, because DMAA will cause the adhesive to slow down the curing speed under the irradiation of the LED lamp.

[0084] (4) By comparing the test results of Comparative Example 9 to 11 with Example 5, it can be seen that if the amount of THFA is lower than or exceeds the amount in the present application, the adhesion between the air bag made of PVC material and the face cup made of PC material of the oxygen anesthesia mask will not be firm.

[0085] When the amount of THFA in Comparative Examples 9 to 10 is too low, the adhesion between the air bag and the face cup of the oxygen mask will not be firm; this is mainly because THFA has good flexibility, yellowing resistance and substrate wetting property, and it has excellent adhesion to PC and other substrates, so when it is added to the adhesive formulation, it can make the adhesion between the air bag and the face cup of the oxygen mask more firm.

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

[0087] (5) By comparing the test results of Comparative Examples 12 to 13 with Example 11, it can be seen that if the amount of photoinitiator is not enough, it will result in insufficient number of free radicals, which cannot quickly initiate the polymerization reaction of monomers and prepolymers, resulting in incomplete curing, which will affect the adhesion between the air bag and the face cup of the oxygen mask, and the adhesion will not be firm; when the amount of photoinitiator is too much, it will absorb too much ultraviolet light, resulting in too fast surface curing, but the internal curing reaction is limited, causing the surface of the coating to be excessively cured while the inside is not completely crosslinked, resulting in insufficient adhesion between the air bag and the face cup of the oxygen mask.

[0088] In summary, the appropriate amount of photoinitiator not only ensures the curing speed, but also avoids the problem of excessive curing of the coating surface while the inside is not completely cured and crosslinked. The active diluent not only adjusts the adhesive to a suitable viscosity, but also the main raw material IBOA and DMAA in it belong to high-reactivity acrylic monomers, which accelerate the curing speed of the adhesive.

[0089] The adhesive of the present application can be quickly cured under the irradiation of the LED lamp by selecting the self-made UV polyurethane resin, the active diluent and the reasonable ratio of the photoinitiator, so as to have good flexibility, no blistering in constant temperature and humidity, firm adhesion between the PC material face cup and the PVC material air bag of the oxygen mask, etc.

[0090] The above merely describes preferred embodiments of the present application, and is not intended to limit the patent scope of the present application, and any equivalent structural transformation or direct or indirect application in other related technical fields based on the content of the present application specification and drawings are also included in the patent protection scope of the present application.

Claims

1. A synthetic resin for use in a medical oxygen anesthesia mask, characterized by, The structural formula is shown as formula I: In formula I, R1 represents any one of the following structural formulas: R2 represents a 1,4-butanediol alkyl segment; R3 represents an acrylic acid alkyl segment; and R4 represents an alkyl group of 1-20 carbon atoms.

2. A method of preparing a synthetic resin for a medical oxygen anesthesia mask as claimed in claim 1, characterized in that, The method comprises the following steps: Step one: under nitrogen protection, mix KH-560 and KH-550, warm to 50-70℃ and react for 0.3-1h, then warm to 80-100℃ and react for 3-5h to obtain an intermediate C1 with tertiary amine and hydroxyl, the molar ratio of the KH-560 to the KH-550 is 2:1, and the reaction equation is as follows: Step two: place diisocyanate and polyester polyol in a reactor with stirring and condensation reflux, react at 65-85℃ for 2-3h, and pass nitrogen during the reaction, and then obtain the intermediate C2, wherein the mass fraction of the diisocyanate added is 18-32, and the mass fraction of the polyester polyol added is 51-75, and the reaction equation is as follows: Step three: add 1.6-3.1 mass fraction of chain extender, 0.5-1.2 mass fraction of the intermediate C1, and a solvent for controlling the viscosity of the reaction system into the reactor, and continue to react to generate the intermediate C3, and the reaction equation is as follows: Step four: add 5-14 mass fraction of (meth)acrylic acid hydroxy ester with a polymerization inhibitor into the reactor, dropwise add the (meth)acrylic acid hydroxy ester within 1h, and keep stirring during the dropwise adding; after the dropwise adding, warm to react, and 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 theoretical calculation value, and the reaction product contains a synthetic resin.

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

4. A method of preparing synthetic resin for medical oxygen anesthesia mask according to claim 2, characterized in that, The polyester polyol is prepared by reacting acrylic acid and 1,4-butanediol.

5. A method of preparing synthetic resin for medical oxygen anesthesia mask according to claim 2, characterized in that, The chain extender of step three is 1,4-butanediol.

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

7. An adhesive for medical oxygen anesthesia masks, characterized by The method comprises the following components by mass fraction: Active diluent 45-95 parts; Photoinitiator 4-14 parts; Synthetic resin 100 parts; The synthetic resin is as claimed in claim 1 or is prepared by the preparation method as claimed in claims 2-6.

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

9. An adhesive for use in a medical oxygen anesthesia mask according to claim 7, wherein The photoinitiator includes one or both of 2,4,6-trimethylbenzoyl phenyl phosphinic acid ethyl ester and 2,4,6-trimethylbenzoyl-diphenyl phosphine oxide.

10. Use of an adhesive as claimed in claims 7 to 9 for a medical oxygen anesthesia mask, characterized in that The adhesive is used for bonding PVC air bag and PC face cup of medical oxygen anesthesia mask, and LED lamp is used for irradiation curing.

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