Silicon hydrogel with medium water content and high oxygen permeability and silicon hydrogel contact lenses

A silicone hydrogel, high oxygen permeability technology, used in glasses/goggles, instruments, optics, etc., to achieve the effect of large oxygen permeability coefficient, high transparency, and soft lenses

Active Publication Date: 2021-01-01
甘肃天后光学科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, there are few silicone hydrogel contact lenses that can meet the requirements of wearing comfort and moldability

Method used

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  • Silicon hydrogel with medium water content and high oxygen permeability and silicon hydrogel contact lenses
  • Silicon hydrogel with medium water content and high oxygen permeability and silicon hydrogel contact lenses
  • Silicon hydrogel with medium water content and high oxygen permeability and silicon hydrogel contact lenses

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The specific preparation steps of the medium water content and high oxygen permeable silicon hydrogel contact lenses provided in this example are as follows:

[0032] Mix and stir 2g of MCR-M11, 1.3g of TRIS, 1.5g of SIMAA2, 0.1g of EGDMA, 0.1g of azobisisobutyronitrile, 4g of HEMA, 6g of NVP, and 5g of n-hexanol for more than 30min, inject In the contact lens mold, thermally initiates polymerization to obtain a silicone hydrogel contact lens lens.

[0033] The above lenses are optically clear with a water content of 55% and a light transmission of 94.6% (see figure 1 ), the oxygen permeability coefficient DK value is 88.

Embodiment 2

[0035] The specific preparation steps of the medium water content and high oxygen permeable silicon hydrogel contact lenses provided in this example are as follows:

[0036] 1.32g of MCR-M11, 2g of TRIS, 1.5g of SIMAA2, 0.08g of EGDMA, 0.1g of azobisisobutyronitrile, 4g of HEMA, 6g of NVP, 5g of hydroxyethyl methacrylate (HEMA ), 5 g of n-hexanol were mixed and stirred for more than 30 minutes, injected into a contact lens mold, and thermally induced to polymerize to obtain a silicone hydrogel contact lens lens.

[0037] The above lenses are optically clear with a water content of 56% and a light transmission of 95% (see figure 2 ), the oxygen permeability coefficient DK value is 87.

Embodiment 3

[0039] The specific preparation steps of the medium water content and high oxygen permeable silicon hydrogel contact lenses provided in this example are as follows:

[0040] Mix and stir 1g of MCR-M11, 2g of TRIS, 1.5g of SIMAA2, 0.1g of TEGDMA, 0.1g of azobisisobutyronitrile, 4g of HEMA, 4g of NVP, and 6.3g of n-butanol for more than 30min. The method is injected into a contact lens mold, and irradiated with ultraviolet light to initiate polymerization to obtain a silicone hydrogel contact lens lens.

[0041] The above lenses are optically clear with a water content of 55% and a light transmission of 93% (see image 3 ), the oxygen permeability coefficient DK value is 88.

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Abstract

The invention discloses a silicon hydrogel with medium water content and high oxygen permeability and a silicon hydrogel contact lens; and the silicon hydrogel is prepared by polymerization reaction of the following components, by mass: 10-60% of silicon-containing monomer, 10-60% of hydrophilic monomer, 0.1-10% of cross-linking agent, 0.1-10% of initiator and 30-60% of solvent. The silicon-containing monomer is one or a mixture of more than one of MCR-M11, TRIS, SIMAA2 and SIGMA. The hydrophilic monomer is one or a mixture of several of HEMA, NVP, methacrylic acid, methyl methacrylate and polyethylene glycol methacrylate. The preparation method comprises the following steps: uniformly mixing and stirring the components according to the formula ratio, injecting the mixture into a contact lens mold, and carrying out ultraviolet irradiation or thermal initiation polymerization to obtain the silicone hydrogel contact lens. Compared with the prior art, the silicon hydrogel provided by theinvention is medium in water content and large in oxygen permeation coefficient, and the contact lenses prepared from the silicon hydrogel are high in transparency, good in oxygen permeation and soft,meet the requirements of wearing comfort and formability of the contact lenses, and have good market prospects.

Description

technical field [0001] The invention relates to the technical field of silicon hydrogel, in particular to a silicon hydrogel with medium water content and high oxygen permeability and a contact lens prepared by using the silicon hydrogel. Background technique [0002] Silicone hydrogel is a kind of organic polymer material with hydrophilic properties, which has a "honeycomb" structure. It is a new type of material that combines the high oxygen permeability of silicon materials and the softness of hydrogels. It copolymerizes organosilicon monomers and hydrophilic monomers, and introduces highly oxygen-permeable siloxane groups into the hydrogel material. The presence of a large number of siloxane groups provides a good channel for oxygen transmission, enabling it to Oxygen is transported through two channels of the organic silicon phase and the hydrogel phase, which improves the oxygen permeability of the material. [0003] Contact lenses have always been loved by people bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/12C08F220/20C08F226/10C08F222/14C08F222/20G02C7/04
CPCC08F283/124G02C7/049C08F220/20C08F226/10C08F222/102
Inventor 张丽珂唐钰喜李卓白茹温浩浩
Owner 甘肃天后光学科技有限公司
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