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Monomer composition for contact lens, polymer for contact lens and production method thereof, and contact lens and production method thereof

A monomer composition, contact lens technology, applied in the directions of glasses/goggles, instruments, optics, etc., can solve the problem of decreased oxygen permeability, and achieve the effect of excellent surface hydrophilicity

Active Publication Date: 2020-08-04
NOF CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the contact lenses of Patent Documents 2 to 4 are improved in the hydrophilicity of the lens surface, there is a problem that the oxygen permeability decreases.

Method used

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  • Monomer composition for contact lens, polymer for contact lens and production method thereof, and contact lens and production method thereof
  • Monomer composition for contact lens, polymer for contact lens and production method thereof, and contact lens and production method thereof
  • Monomer composition for contact lens, polymer for contact lens and production method thereof, and contact lens and production method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0084] The preparation method of the composition of the present invention is not particularly limited. For example, it can be prepared by adding each component to a stirring (mixing) device in any order or together, and stirring (mixing) at a temperature of 10°C to 50°C until uniform. However, when the composition contains a polymerization initiator, it is necessary to pay attention not to initiate a polymerization reaction during mixing, and it is preferable to mix at 40° C. or lower. From the point of making the solubility of (A) component favorable, it is preferable to add and mix other components after mixing and dissolving three components of (A), (B) and (C)component.

[0085] The polymer of the present invention is formed from the polymer of the composition of the present invention described above. Hereinafter, the production method of the polymer of the present invention will be described. The production method shown below is only one embodiment of the method for obta...

Embodiment 1

[0176] 0.5g (5.0% by mass) of MPC, 1.0g (10.0% by mass) of HEA, 4.0g (40.0% by mass) of ES and 0.5g (5 parts by mass) of EtOH were mixed in a container and stirred at room temperature until MPC dissolves. Further, 1.9g (19.0 mass %) of FM-0711, 0.1 g (1.0 mass %) of TEGDV, 2.5 g (25.0 mass %) of NVP and 0.05 g (0.5 mass parts) of AIBN were added to the container. Stir until uniform to obtain a composition. The above-mentioned evaluation was performed on this composition.

[0177] 0.3 g of the above-mentioned composition was injected into a 25 mm × 70 mm × 0.2 mm spacer sandwiched between two polypropylene plates with a polyethylene terephthalate sheet having a thickness of 0.1 mm as a spacer. pool (cell), and placed in the oven. After replacing the inside of the oven with nitrogen, the temperature was raised to 65°C and maintained at this temperature for 3 hours, and then the temperature was further raised to 120°C and maintained for 2 hours to polymerize the composition to...

Embodiment 2～27

[0180] The compositions, polymers, and contact lenses of Examples 2 to 27 were prepared / manufactured in the same manner as in Example 1 except that the content ratio of each component and polymerization conditions were changed to those shown in Tables 1 to 4, and evaluation tests were performed. The results are shown in Tables 1-4.

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Abstract

The present invention provides a monomer composition for contact lenses useful for producing contact lenses having excellent surface hydrophilicity, oxygen permeability, mechanical strength and wearing feeling. Further provided are a contact lens polymer obtained from the composition and a contact lens. The composition contains: a specific amount of (A) phosphorylcholine-containing methacrylate monomer; (B) selected from (meth)hydroxyethyl acrylate, (meth)hydroxypropyl acrylate, (meth) base) one or more hydroxyl-containing monomers in the group consisting of hydroxybutyl acrylate, hydroxyethyl acrylamide, ethylene glycol monovinyl ether and diethylene glycol monovinyl ether; (C) siloxane-containing (D) a siloxane-based (meth)acrylate; and (E) a crosslinking agent.

Description

technical field [0001] The present invention relates to a monomer composition for contact lenses, a polymer of the composition and a method for producing the same, and a contact lens formed from a hydrate of the polymer and a method for producing the same. Background technique [0002] Conventional hydrogel contact lenses do not supply enough oxygen to the cornea of ​​the eye, and have problems in terms of safety when worn for a long time. Silicone hydrogel contact lenses have been developed as contact lenses that overcome this drawback and have improved safety. [0003] However, silicone hydrogel contact lenses have a problem that it is difficult to make the surface of the lens hydrophilic. Generally, soft contact lenses are produced by casting molding, and a mold made of polypropylene is often used in this method. When this method is used to manufacture silicone hydrogel contact lenses, since polypropylene is hydrophobic, silicone monomers are polymerized in a state of b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02C7/04C08F220/28C08F230/02C08F230/08
CPCC08F230/02G02C7/04C08F230/085
Inventor 松冈阳介五反田龙矢
Owner NOF CORP
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