Soft hydrophilic corneal contact lens manufacturing formula

A corneal contact, hydrophilic technology, applied in glasses/goggles, instruments, optics, etc., can solve the problem of wearing time difference, and achieve the effect of good elasticity, not easy to fade, and good flexibility

Active Publication Date: 2014-05-14
ZHUHAI SANSHI OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Special attention is that the oxygen permeability of lenses made of differe

Method used

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Embodiment Construction

[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific examples.

[0026] A soft hydrophilic contact lens formulation comprises the following components:

[0027] Ethylene glycol ether: 500 grams

[0028] Methyl methacrylate: 25 grams

[0029] Methacrylic acid: 20 grams

[0030] Styrene: 20 grams

[0031] Butyl acetate: 800 grams

[0032] Ethylmercaptoethanol: 10g

[0033] Propylene glycol: 100 grams

[0034] Hydroxyethyl methacrylate: 1000 grams

[0035] Hexamethylene diisocyanate: 5 grams

[0036] The production steps of the contact lens made according to the soft hydrophilic contact lens production formula are:

[0037] 6. Put the previously prepared ethylene glycol ether, methyl methacrylate, methacrylic acid, styrene, butyl acetate, ethylene-mercaptoethanol, propylene glycol, and hydroxyethyl methacryla...

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PUM

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Abstract

The invention discloses a soft hydrophilic corneal contact lens manufacturing formula, and relates to the field of production of contact lenses. The soft hydrophilic corneal contact lens manufacturing formula mainly comprises the following components: 500 grams of 2-ethoxyethanol, 25 grams of methyl methacrylate, 20 grams of methacrylic acid, 20 grams of styrene, 800 grams of butyl acetate, 10 grams of 2-mercaptoethanol, 100 grams of propylene glycol, 1,000 grams of hydroxyethyl methacrylate and 5 grams of hexamethylene diisocyanate. A manufactured soft hydrophilic corneal contact lens is high in softness and elasticity and difficult to fade, is stable when being formed and colored, can be more comfortable to wear, and is free of strong irritation effects.

Description

Technical field: [0001] The invention relates to the field of contact lens production, in particular to a formula for making soft hydrophilic contact lenses. Background technique: [0002] Contact lenses, or contact lenses, are lenses worn on the cornea of ​​the eye to correct vision or protect the eye. It includes two types of hard and soft. Contact lenses not only bring great improvements to 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. It has also played a special role in the development of myopia and astigmatism, and in the treatment of special eye diseases. However, most of the contact lenses currently used are soft contact lenses. Due to the poor hardness of the material, they are relatively easy to crack and be scratched. Some users often report that there are cracks and chips on the edge of the lens. After analysis, it is usually caused b...

Claims

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Application Information

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IPC IPC(8): C08G18/73C08G18/62C08G18/32C08G18/34C08G18/38C08F220/28C08F220/14C08F220/06C08F212/08G02C7/04G02B1/04
CPCC08F220/28C08F220/281C08G18/6254C08G18/73G02B1/04G02C7/04C08F220/14C08F220/06C08F212/08
Inventor 李秀凤
Owner ZHUHAI SANSHI OPTICAL CO LTD
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