Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of formula for making soft hydrophilic contact lens

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

Active Publication Date: 2016-08-17
ZHUHAI SANSHI OPTICAL CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Special attention is that the oxygen permeability of lenses made of different materials is very different, and the wearable time is also very different

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com