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A kind of superhydrophilic silicone hydrogel contact lens and treatment method

A silicone hydrogel and contact lens technology, applied in glasses/goggles, instruments, optics, etc., can solve the difficulties in the selection of coating materials, the difficulty of coating uniformity and physiological performance factors, and the increased complexity of contact lens manufacturing, etc. problem, to achieve the effect of comfortable hand feeling, soft lens and long-lasting effect

Active Publication Date: 2017-02-22
HAICHANG CONTACT LENSES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This adds additional complexity to the manufacture of contact lenses
Moreover, the choice of coating material is difficult, as is determining proper coating thickness, coating uniformity, and other factors that may affect physiological performance

Method used

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  • A kind of superhydrophilic silicone hydrogel contact lens and treatment method
  • A kind of superhydrophilic silicone hydrogel contact lens and treatment method
  • A kind of superhydrophilic silicone hydrogel contact lens and treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] A kind of superhydrophilic silicone hydrogel contact lens of the present invention is made up of following components according to mass fraction:

[0056] Silicon-containing monomer: 20-50%;

[0057] Hydrophilic monomer: 40~70%;

[0058] Hydrophilic polymer: 5-20%;

[0059] Initiator: 0.1~1%;

[0060] Cross-linking agent: 1-5%.

[0061] The reason why the combination of the above substances has superhydrophilicity is that the hydrophilic high molecular polymer does not participate in the reaction, but because the hydrophilic high molecular polymer has a linear structure, it can move freely in the hydrogel network formed by polymerization. In this way, part of the hydrophilic polymer will migrate to the surface, thereby improving the hydrophilicity of the silicone hydrogel surface.

[0062]During the use of the super-hydrophilic lens prepared above, the hydrophilic polymer will gradually separate from the lens due to movement, so that the lens becomes non-hydrophilic...

Embodiment 2

[0071] A superhydrophilic silicon hydrogel contact lens is characterized in that the contact lens is composed of the following components according to mass fraction:

[0072] Silicon-containing monomer: 20-50%;

[0073] Hydrophilic monomer: 40~70%;

[0074] Hydrophilic polymer: 5-20%;

[0075] Initiator: 0.1~1%;

[0076] Cross-linking agent: 1~5%;

[0077] Auxiliary: 0.1~0.5%;

[0078] The auxiliary agent is any one or a combination of colorants, ultraviolet absorbers and processing aids.

[0079] As a preference, in the above-mentioned superhydrophilic silicone hydrogel contact lens, the selection of silicon-containing monomer, hydrophilic monomer, hydrophilic high molecular polymer, initiator and crosslinking agent is the same as that in Example 1. Examples of silicon-containing monomers are methyl-bis(trimethylsiloxy)-silylpropyl glyceryl methacrylate, bis(trimethylsiloxy)propyl methacrylate, methacrylic acid Any one or any combination of pentamethyldisiloxane esters....

Embodiment 3

[0082] A method for treating a superhydrophilic silicone hydrogel contact lens, comprising the following process: soaking the silicone hydrogel contact lens in an aqueous solution of a hydrophilic high molecular polymer with a mass concentration of 10-20%, and heating the contact lens at 70-90 ℃ for more than 8 hours, and then gradually cooled to 15-25 ℃ to obtain the treated silicone hydrogel contact lens.

[0083] In this embodiment, the silicone hydrogel contact lens can be the superhydrophilic silicone hydrogel contact lens described in Example 1, or the superhydrophilic silicone hydrogel contact lens described in Example 2.

[0084] During the use of the original super-hydrophilic lens, the hydrophilic polymer will gradually separate from the lens due to movement, so that the lens becomes non-hydrophilic again. After being treated by the method of this embodiment, some of the polymers that move out of the lens network are in the lens, and some are on the surface of the le...

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Abstract

The invention discloses a super-hydrophilic silicone hydrogel contact lens, comprising the following components in percentage by mass: 20-50% of a silicon-container monomer, 40-70% of a hydrophilic monomer, 5-20% of a hydrophilic high-molecular polymer, 0.1-1% of an initiator and 1-5% of a crosslinking agent. The invention further discloses a treatment method of the super-hydrophilic silicone hydrogel contact lens. After being treated, the silicone hydrogel contact lens has a long-acting super-hydrophilic performance.

Description

technical field [0001] The invention relates to a contact lens and a treatment method, in particular to a superhydrophilic silicon hydrogel contact lens and a treatment method. Background technique [0002] Contact lenses, also known as "contact lenses", are lenses worn on the cornea of ​​the eye to correct vision or protect the eyes. According to the softness and hardness of the material, it includes three types: rigid, semi-rigid, and soft. Contact lenses not only greatly improve patients with refractive errors such as myopia, hyperopia, and astigmatism in terms of appearance and convenience, but also have a wide field of vision and realistic vision. In addition, it has also played a special role in controlling the development of myopia and astigmatism in young people, and treating special eye diseases. [0003] Among them, soft contact lenses have developed the fastest and have gradually become the most important contact lens consumer products. The initial soft contact...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/28C08F220/54C08F226/10C08F230/08C08F220/56C08F228/02C08F226/08C08F212/14C08F220/40C08F222/14C08F222/20C08J7/00G02C7/04
Inventor 姜勇赵正柏谢海姣安双双
Owner HAICHANG CONTACT LENSES
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