Silicone hydrogel applied to contact lenses and manufacturing method thereof

A silicone hydrogel and contact lens technology, applied in glasses/goggles, instruments, optics, etc., can solve the problem of not being able to fully improve the lubricity of the PP surface of the lens, and achieve the effect of avoiding foreign body sensation

Pending Publication Date: 2022-01-25
JILIN REALCON CONTACT LENS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, PVP cannot fully improve the lubricity of the PP surface of the lens

Method used

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  • Silicone hydrogel applied to contact lenses and manufacturing method thereof
  • Silicone hydrogel applied to contact lenses and manufacturing method thereof
  • Silicone hydrogel applied to contact lenses and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] S1, by weight: 3-methacrylate oxypropyl-tri-(trimethylsiloxy)silane 1.5g, methacrylate-hydroxyethyl ester 4.5g, NVP 2.1g, N-methyl- N-vinylacetamide 1.8g Polyethylene glycol 0.48g, EGDMA 0.097g, AIBN 0.0485g, PVP 0.97g, mPEG-MA 0.78g. Stir the polymerized monomer mixture after configuration for 30 minutes;

[0046] S2. Injecting the polymerized monomer mixture into a molding mold, and molding it under pressure through the mold;

[0047] S3, putting the formed mold into a constant temperature drying oven to cure.

[0048] In Example 1, 3-methacrylateoxypropyl-tri-(trimethylsiloxy)silane is produced by TCI Company, CAS number: 17096-07-0, molecular formula: C16H38O5Si4, molecular weight: 422.81;

[0049] Hydroxyethyl methacrylate is produced by Aladdin Company with a molecular weight of 130.14 and Beilstein No. 1071580;

[0050] NVP (N-vinylpyrrolidone), produced by Sigma Aldrich, molecular formula C 6 h 9 NO, molecular weight 111.14, CAS No. 88-12-0.

[0051]N-meth...

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Abstract

The invention discloses silicone hydrogel applied to contact lenses and a manufacturing method thereof, relates to the technical field of contact lens manufacturing, and solves the problem that in a contact lens mold pressing process, the differrence between lubrication degrees of the two surfaces of a lens is too large in a PBT / PP mold combination. According to the silicone hydrogel, a macromolecule hydrophilic polymer is added in the formula of the silicone hydrogel, and an interpenetrating network structure is formed by polymerizing all the components, so that differential seepage of PVP in mold combinations with different polarities is effectively avoided. According to the contact lens, the lubrication degree and the hardness of materials on the two surfaces of the contact lens in a PBT / PP mold combination process are effectively improved.

Description

technical field [0001] The present application relates to the technical field of contact lens manufacturing, in particular to a silicone hydrogel applied to contact lenses and a manufacturing method thereof. Background technique [0002] Contact lenses have been commercialized for 60 years since they were invented in early 1950. The initial contact lenses were made of hard materials (such as: PMMA polymethyl methacrylate). The oxygen permeability and hydrophilicity of the main body are not good, so that the wearable time of the contact lens is short, and there will be obvious foreign body discomfort. The invention of soft hydrophilic contact lenses in the mid-1970s can be described as a progressive reform, which is made of a hydrogel material based on HEMA (hydroxyethyl methacrylate). Due to the high water absorption of this material, it becomes soft and highly water-containing after hydration, which greatly improves the wearing comfort. However, its oxygen permeability coe...

Claims

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Application Information

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IPC IPC(8): C08J3/075C08F220/20C08F230/08C08F226/10C08F226/02C08F222/14C08F220/28G02C7/04C08L33/14
CPCC08J3/075C08F220/20G02C7/049C08J2333/14C08F230/085C08F226/10C08F226/02C08F222/102C08F220/286
Inventor 王瑾张厚于珊胡渤
Owner JILIN REALCON CONTACT LENS CO LTD
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