Light-curing hydrophilic lubricating coating as well as preparation method and using method thereof

A lubricating coating and light-curing technology, applied in coatings and other directions, can solve the problems of reduced coating drying time, large heat and time consumption, and achieve the effect of improving adhesion and excellent lubricity

Inactive Publication Date: 2013-09-11
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The traditional drying method consumes a lot of heat and time. With the development of polymer photochemistry, light curing greatly reduces the drying time of the coating

Method used

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  • Light-curing hydrophilic lubricating coating as well as preparation method and using method thereof
  • Light-curing hydrophilic lubricating coating as well as preparation method and using method thereof
  • Light-curing hydrophilic lubricating coating as well as preparation method and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 Synthesis of photoactive hydrophilic resin:

[0045] Weigh 5.55g (50mmol) of vinylpyrrolidone into a three-neck flask, then add N-[3-(4-benzoylbenzamido)propyl]methacrylic acid dissolved in 10ml of dimethyl sulfoxide Amide 0.18g (0.52mmol), put nitrogen into the flask to remove the air, add azobisisobutyronitrile 0.1g (0.6mmol), tetramethylethylenediamine 0.006ml (0.042mmol), the liquid surface is filled with nitrogen Finally, close the container and heat at 55 degrees Celsius for 12 hours. After the reaction, the solution was precipitated with ether, and the precipitate was filtered out and dried in an oven to obtain 5 g of a white solid. The detected photoactive group benzophenones is 1.1 mmol / g.

Embodiment 2

[0046] Embodiment 2 Preparation and application method of photocurable hydrophilic lubricating coating:

[0047] The resin in Example 1, and the cross-linking agent ethylene bromide bis(4-benzoylbenzyl dimethyl ammonium salt) weight ratio is 5 / 0.2 total 5.2g solids were added to 30ml isopropanol and 20ml In pure water, a coating solution is formed after ultrasonic dissolution. Immerse the pre-cleaned and dried polyurethane substrate in the coating solution for 1-2 minutes, take it out, and let it dry at room temperature. After the substrate coated with the coating solution was cured for 2 minutes after UV irradiation, the UV intensity was 1mw / cm 2 .

[0048] After testing, the coating has good lubricity and strong adhesion after being wetted with water.

Embodiment 3

[0049] Embodiment 3 Preparation and application method of photocurable hydrophilic lubricating coating:

[0050]Resin in embodiment 1, and cross-linking agent hexamethylene bromide bis(4-benzoyl benzyl dimethyl ammonium salt) weight ratio is the solid of 6 / 0.25 altogether 6.25g joins 30ml Virahol and 20ml of pure water, dissolved by ultrasonic to form a coating solution. Immerse the pre-washed and dried polyurethane substrate in the coating solution for 1-2 minutes, take it out, and let it dry at room temperature. After curing the substrate coated with the coating solution for 2.5 minutes after UV irradiation, the UV light intensity was 1mw / cm 2 .

[0051] After testing, the coating has good lubricity and strong adhesion after being wetted with water.

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Abstract

The invention discloses a light-curing hydrophilic lubricating coating as well as a preparation method and a using method thereof. The light-curing hydrophilic lubricating coating comprises the following components by weight percent: 1-40% of hydrophilic resin with light activity, 0.05-2% of a hydrophilic cross-linking agent with light activity, and 58-98.9% of a solvent. The hydrophilic lubricating coating has hydrophilia, has an excellent lubricating property after being wetted, and enhances adhesive force due to the action of the cross-linking agent. The hydrophilic lubricating coating is suitable for the fields such as medical treatment, material modification, and the like.

Description

[0001] technical field [0002] The invention relates to a hydrophilic coating that can be applied to medical treatment, in particular to a polyvinylpyrrolidone-based hydrophilic coating and a preparation method and application method thereof. Background technique [0003] With the continuous advancement of medical technology, the development of medical devices has higher requirements. Due to the relatively low lubricity and biocompatibility of traditional medical devices, it encounters some difficulties in application. For example, catheters, traditional catheters will rub against tissue when inserted or pulled out of the patient's body, which not only brings discomfort to the patient, but also may damage sensitive tissues, increasing the risk of surgery. In order to solve this problem, early medical personnel applied lubricants such as Vaseline on the catheter to reduce the friction between the catheter and the tissue. But the effect is not good, because the lubricant ap...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D139/06C09D7/12C08F226/10C08F222/38C08F220/60
Inventor 吴春晖王小妹张承韩春琦
Owner SUN YAT SEN UNIV
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