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Preparation method of photocured hydrophilic coating

A hydrophilic coating and light-curing technology, applied in coatings, pharmaceutical formulations, medical science, etc., can solve the problems of accelerating the migration of small molecule additives, poor controllability of the production process, and affecting the performance of device materials, so as to improve cracking Shedding phenomenon, beneficial to production and risk control, and the effect of avoiding biocompatibility risks

Inactive Publication Date: 2021-12-14
浙江海圣医疗器械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The thermal curing process is simple, basically only needs leaching and drying, but the disadvantages are also obvious, such as longer reaction time; high temperature affects the performance of device materials and accelerates the migration of small molecule additives; thermal curing makes the production process less controllable , leading to poor coating stability

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In the reaction vessel, add 100g of epoxidized soybean oil, heat to 80°C, gradually add the mixture of acrylic acid, N,N-dimethylaniline, and hydroquinone prepared in proportion, control the dropping rate, and heat up to 100°C , After stirring and reacting for 5h, the epoxy soybean oil acrylate prepolymer was obtained. The mass ratio of epoxidized soybean oil and acrylic acid is 1:3; N,N-dimethylaniline is 0.5% of the mass of epoxidized soybean oil, and hydroquinone is 0.05% of the mass of epoxidized soybean oil.

[0031] Add epoxy soybean oil acrylate prepolymer, polyethylene glycol diacrylate, 4-phenylbenzophenone, polyvinylpyrrolidone, and hydroxypropyl methylcellulose into the container, and stir at room temperature for 30 minutes to obtain Hydrophilic coating, wherein the mass ratio of epoxy soybean oil acrylate prepolymer, polyvinylpyrrolidone, and polyethylene glycol diacrylate is 1:2:5, and the quality of 4-phenylbenzophenone is the total mass of the coating 1w...

Embodiment 2

[0034] In the reaction vessel, add 100g of epoxidized soybean oil, heat to 70°C, gradually add the mixture of acrylic acid, N,N-dimethylaniline, and hydroquinone prepared in proportion, control the dropping rate, and heat up to 110°C , After stirring and reacting for 5h, the epoxy soybean oil acrylate prepolymer was obtained. The ratio of epoxidized soybean oil to acrylic acid is 1:3; N,N-dimethylaniline is 0.5% of the mass of epoxidized soybean oil, and hydroquinone is 0.5% of the mass of epoxidized soybean oil.

[0035]Epoxidized soybean oil acrylate prepolymer, dipropylene glycol diacrylate, 2-hydroxy-4-(2-hydroxyethoxy)-2-methylpropiophenone, polyvinylpyrrolidone, hydroxypropylmethylcellulose Add it into the container and stir at room temperature for 30min to obtain a hydrophilic coating, wherein the mass ratio of epoxy soybean oil acrylate prepolymer, polyvinylpyrrolidone, and dipropylene glycol diacrylate is 1:3:5, and 2-hydroxyl-4 The quality of -(2-hydroxyethoxy)-2-me...

Embodiment 3

[0038] In the reaction vessel, add 100g of epoxidized soybean oil, heat to 80°C, gradually add the mixture of acrylic acid, triethylamine, and hydroquinone prepared in proportion, control the dropping rate, raise the temperature to 90°C, and stir for 8 hours. , to obtain epoxy soybean oil acrylate prepolymer. The mass ratio of epoxidized soybean oil and acrylic acid is 1:3; triethylamine is 0.1% of the mass of epoxidized soybean oil, and hydroquinone is 0.5% of the mass of epoxidized soybean oil.

[0039] Epoxy soybean oil acrylate prepolymer, allyl glycidyl ether, benzophenone, polyvinylpyrrolidone, and hydroxypropyl methylcellulose are added to the container, and stirred at room temperature for 30 minutes to obtain a hydrophilic coating, wherein The mass ratio of epoxy soybean oil acrylate prepolymer, polyvinylpyrrolidone, and allyl glycidyl ether is 1:3:10, and the mass of benzophenone is 1 wt% of the total mass of the paint.

[0040] Before the paint is applied to the sur...

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PUM

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a preparation method of a photocured hydrophilic coating. The photocured hydrophilic coating comprises an epoxidized soybean oil acrylate prepolymer or polyurethane acrylate prepolymer, a reactive diluent, a photoinitiator, a hydrophilic polymer and an auxiliary agent. The photocured hydrophilic coating has a semi-interpenetrating network structure, the epoxidized soybean oil acrylate prepolymer or polyurethane acrylate hydrophilic coating is photocured to form a network structure, and the hydrophilic polymer is dispersed in a cross-linked network gap in a molecular entanglement manner, so that the hydrophilic coating not only has a hydrophilic lubricating function, but also has reliable firmness.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a preparation method of a light-cured hydrophilic coating. Background technique [0002] Interventional diagnosis and treatment technology is a general term for a series of technologies that introduce specific instruments such as puncture needles, catheters, and guide wires into the human body through natural channels or tiny wounds for minimally invasive treatment. Compared with traditional medical technology, interventional diagnosis and treatment has the advantages of less trauma, less treatment risk, and lower treatment cost, and has been widely promoted and used clinically. At present, most interventional devices are made of hydrophobic materials, such as polyvinyl chloride, polyurethane and silicone rubber. Although they have excellent mechanical properties and biocompatibility, their hydrophobicity is too strong, and when they intervene in the human ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61L31/10A61L31/08A61L31/14C08G71/04
CPCA61L31/10A61L31/08A61L31/14C08G71/04A61L2400/18A61L2420/02A61L2420/06C08L75/14C08L91/00C08L71/02C08L39/06C08L5/04C08L1/284
Inventor 聂智军裘雅红黄海生王利明
Owner 浙江海圣医疗器械股份有限公司
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