Contact lens material and preparing method thereof

A contact lens and raw material technology, applied in the direction of instruments, optics, optical components, etc., can solve the problems affecting the wearing comfort of contact lenses, affecting the biocompatibility of contact lenses, and easily residual pectinase, etc., and achieve low production costs , high production efficiency, good hydrophilic effect

Inactive Publication Date: 2016-09-07
ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the main problem to be solved in the preparation of contact lenses made of silicone materials is: the surface of silicone materials is highly hydrophobic, causing protein adsorption, resulting in dryness and inflammation of the eyes, affecting the wearing comfort of contact lenses
However, this patent uses enzymatic hydrolysis to prepare chitosan colloidal solution, which is prone to residual pectinase and affects the biocompatibility of contact lenses.

Method used

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  • Contact lens material and preparing method thereof
  • Contact lens material and preparing method thereof
  • Contact lens material and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A contact lens material, the raw material for preparing said contact lens material includes 2,2'-bis(4-hydroxyl-3-trialkoxysilyl-5-trialkoxysilyl) represented by formula (I) - 30 parts of siloxane prepolymer of phenyl)propane, 30 parts of 2,4-toluene diisocyanate, 5 parts of acrylic acid, 5 parts of alkacrylic acid, 5 parts of alkoxyacrylic acid, 5 parts of acrylamide, dichloride 0.005 parts of zinc, 0.002 parts of azobisisobutyronitrile, 0.003 parts of azobisisoheptanonitrile, 0.001 parts of dibutyltin dilaurate;

[0036]

[0037] In (I), R1, R2, R3, R4 represent methyl (Me), ethyl (Et), n-propyl (n-Pr), n-butyl (n-Bu), phenyl (Ph) respectively.

Embodiment 2

[0039] A contact lens material, the raw material for preparing said contact lens material includes 2,2'-bis(4-hydroxyl-3-trialkoxysilyl-5-trialkoxysilyl) represented by formula (I) -50 parts of siloxane prepolymer of -phenyl) propane, 60 parts of 2,6-toluene diisocyanate, 30 parts of hydroxyethyl ester, 30 parts of N-vinylpyrrolidone, 0.01 part of aluminum trichloride, isopropyl peroxide 0.005 parts of benzene, 0.005 parts of dibenzoyl peroxide, 0.005 parts of dibutyltin dilaurate;

[0040]

[0041] In (I), R1, R2, R3, R4 respectively represent a chloromethyl group, a chloroethyl group, a chloro-n-propyl group, a chloro-n-butyl group, a chlorophenyl group.

Embodiment 3

[0043] A contact lens material, the raw material for preparing said contact lens material includes 2,2'-bis(4-hydroxyl-3-trialkoxysilyl-5-trialkoxysilyl) represented by formula (I) - 35 parts of siloxane prepolymer of phenyl)propane, 40 parts of 2,4-toluene diisocyanate, 15 parts of alkylacrylamide, 15 parts of alkoxyacrylamide, 0.006 part of magnesium dichloride, p-menthane peroxide 0.003 parts, 0.003 parts of tert-butyl peroxide, 0.002 parts of dibutyltin dilaurate;

[0044]

[0045] In (I), R1, R2, R3, R4 respectively represent a chloromethyl group, ethyl group, n-propyl group, n-butyl group, phenyl group.

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PUM

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Abstract

The invention discloses a contact lens material and a preparing method thereof. The contact lens material is prepared from a siloxane prepolymer, toluene diisocynate, a hydrophilic monomer, a catalyst, chain growth initiator and a coupling agent. The preparing method includes the steps that siloxane prepolymer, toluene diisocynate and the catalyst are put into methylbenzene solvent and heated to prepare a first prepolymer; the hydrophilic monomer, the chain growth initiator and alkaline solvent are added into the first prepolymer and heated to obtain a second prepolymer; the second prepolymer is injected into a mold, a polyvinyl alcohol film is attached into the mold for sealing, the coupling agent is added, silane coupling is completed through heating to obtain a third prepolymer; the third prepolymer is demolded to obtain the contact lens material. The prepared contact lens material has the advantages of being high in hydrophily, oxygen transmittance and biocompatibility.

Description

technical field [0001] The invention relates to the field of lenses, in particular to a contact lens material and a preparation method thereof. Background technique [0002] The main materials for making contact lenses on the market can be divided into two categories: silicone materials and hydrogel materials. Due to its high oxygen transmission rate, good flexibility, good thermal stability and water resistance, organosilicon is currently the most widely used contact lens material. However, the main problem to be solved in the preparation of contact lenses made of silicone materials is that the surface of silicone materials is highly hydrophobic, causing protein adsorption, resulting in dryness and inflammation of the eyes, which affects the wearing comfort of contact lenses. [0003] Chinese patent CN200910208267.9 discloses a self-lubricating anion contact lens, which is composed of the following raw materials: synthetic resin polymer: 0-96; natural mineral nanomaterials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/00C08F220/06C08F220/04C08F220/56C08F226/10C08F220/54C08F220/58C08F220/10C08F226/02C08G18/76C08G18/32G02B1/04
CPCC08F283/006C08G18/3893C08G18/7614G02B1/043C08F220/06C08F220/04C08F220/56C08F226/10C08F220/54C08F220/58C08F220/10C08F226/02
Inventor 赵岚曹明
Owner ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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