Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
  • G02C7/00—Optical parts
  • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
  • G02C7/04—Contact lenses for the eyes
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
  • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics

Definitions

• the present invention relates to an oxygen-permeable hard contact lens, and more particularly, to an oxygen-permeable hard disk that is excellent in stain resistance, abrasion resistance, and hydrophilicity. Thread on contact lens
• polymethyl methacrylate is known for its excellent optical properties, physical properties, and mechanical properties. It has been widely used for its irritation.
• the pressure of metabolic methacrylate is a transient effect of oxygen, which is very small, so that oxygen is transmitted to the corneal epithelium through the contact lens. Supply is hardly expected.
• you wear or sleep for an extended period of time you will have a keratotic or hypoxic condition, and you will have hyperemia, hematoma, and other corneal disorders. May occur. Since the cornea is a bloodless tube, oxygen required for metabolism is supplied from the oxygen at the front of the horn to the dissolved oxygen in the tears. No.
• the contact lens Since the contact lens is usually about half the size of the corneal surface, the supply of ⁇ -elements to the cornea is lens-shaped. The bottom of the lens is not covered by the liquid between the lens and the lens. It is performed by tears in the cornea. However, the lens material itself has a high oxygen permeability, and oxygen is supplied to the cornea through the hard contact lens. It goes without saying that it is even more favorable for corneal metabolism o
• the contact lenses are mainly made of silicone metal creatures. Hardness and hydrophilicity are several dozen times to several hundred times greater than those of hard and contact lenses, but usually hardness and hydrophilicity are low. It is inferior to conventional contact lenses mainly made of polyethylene methacrylate, and is also very easy to adhere to dirt due to lipids and the like. In general, it has a disadvantage. It takes the form of a copolymer with the silicate, and when the proportion of silicone methacrylate increases, the oxygen permeability improves, but the hardness decreases, and the removal rate increases. Abrasability also deteriorates at the same time that handling scratches are more likely to occur.
• the hydrophilicity decreases and, conversely, the lipophilicity increases, so that the water wettability deteriorates and lipids such as lecithin can be easily adsorbed.
• Oxygen permeable hard contact lenses which contain a lot of conmethacrylates, can easily become dirty.
• Transparent hard contact lenses whose main component is silicone meta-relate, have poor silicone-specific water repellency. From this, it can be seen that the surface of the lens was not subjected to the surface hydrophilization treatment to improve the water-repellency of the lens surface. Because it was very iooo, it did not gradually lose its hydrophilicity during stool and had to be rehydrated again.
• the inventors of the present invention have shown that it is possible to obtain from a copolymer containing a fluorine-containing monomer without charge from a transient contact lens. It was hoped that the strength and strength of oxygen, surface roughness, and hydrophilicity would be improved.
• the cell mouthpiece is a set that is composed of a tray cover, a chip car, and the contact lens is a conventional volume meter.
• Oxygen permeability and hydrophilicity are slightly faster than those of the contact lenses that are made, and the hardness is low, making it easier to use. Mid-resonance, 0 ram change It has the drawback of jade. Disclosure of the invention
• the present inventors have eliminated the disadvantages of conventional oxygen permeable hard contact lenses, and have a high oxygen permeability and a high level of contamination resistance.
• the present invention has been completed.
• an object of the present invention is to provide an oxygen-permeable hard contact lens which is excellent in stain resistance, scratch resistance and hydrophilicity.
• the oxygen-permeable hard contact lens of the present invention has an alkyl (meth) acrylate rate of 30 to 50% by weight, a fluorine-containing monomer—10 to 40% by weight, (Meta) acrylic 10 to 55 weight, unsaturated carboxylic acid 5 to 15 weight, and divalent or higher polyhydric alcohol ) Acrylate or tri (meta) acrylate
• a composition consisting of 0.5 to 15 weights of a composition is continuously heated at 40 to 100% by heating or stepwise heating. It is obtained by casting directly by the warming method and subjecting this to lens machining by ordinary machining and polishing.
• the above (meta) concrete rate means both a concrete rate and a meta clear rate.
• ⁇ Improves workability and polishing.
• the improvement in wear resistance, machinability, and abrasiveness due to the increase in hardness was surprising, unlike the initial expectation, and the amount of fluorine-containing monomers used.
• the content is less than the above composition range ⁇ , the above effect is not exhibited, and when the content is too large, the hardness tends to decrease rather, so that the content of O is undesirable.
• One monograph is Trifluoroethyl (meta). There is a special rate, one is Hexaful.
• Tsu also mouth pin Le (meth) mono Ma one molecule weight, such as ⁇ click Re-les over preparative is rather small, and ends the Application Benefits full O b menu Chi le group of either Shi particularly preferred Rere 0 Shi Li Connec- tory rate and alkyl meta-reliet
• the copolymer obtained from the monomer mixture "a 1 ⁇ 4 ⁇ ' ⁇ ' ' ⁇ TO TO TO TO TO TO TO TO TO ⁇ ⁇ ⁇ ⁇ j ⁇ j ⁇ ⁇ ⁇ ⁇ ⁇ Therefore, it is very convenient to improve oxygen permeability by adding silicone (meta) acrylate.
• the creator metal creat rate is methyl (meta) creator (meta) acrylate. ⁇ dani. Le
• Unsaturated carboxy and benzoyl are polymerizable carboxy and xyl group-containing monomers, and acrylic acid and methacrylic acid are typical examples. .
• This component has the effect of adding water to the contact lens material itself, especially when immersed in water. It is useful for improving surface hydrophilicity. Also, in the case of methacrylic acid, it has been clarified in the present invention that improving the hydrophilicity will contribute to the increase in the amount of water in the future.
• Unsaturated carboxylic acid is used in an amount of 5 to 15 s ⁇ , and is not sufficiently hydrophilic at less than 5 3 ⁇ 4 s% and is a copolymer at 15 ⁇ a% or more. It is not good because it produces cloudiness or comes out fragile.
• metacryl is used.
• Silicon (meta) atalylate is an additive component for further improving oxygen permeability.
• Tris (trimethyl siloxane) H. Mouth kid 0 years old (meta) atearliest ⁇ ⁇ ⁇ ⁇ _
• a monomer having a siloxane bond in the ester portion of the sterol ⁇ Many siloxane bonds in the monomer are present.
• the pedestal After completion of the polymerization, the pedestal is finished in the usual lens form (by processing and polishing).
• Oxygen permeable hardened contact lenses are based on conventional silicone metal acrylates. Compared with the lenses, the lens has better resistance to heat, abrasion resistance, and hydrophilicity.
• the obtained copolymer is excellent in the cutting property and the polishing property when processing the lens in the form of ⁇ ⁇ , and the lens is desirable. It is easy to process to the dimensions of the size, and the obtained lens has shape stability.
• the hard contact lens of the present invention has various properties that cannot be obtained by the conventional oxygen-permeable hard contact lens. E is very significant in that
• Methyl metal crelet 45 ⁇ 3 ⁇ 4 ⁇ ⁇ ⁇ ⁇ 0 0 0 0 Silif. Mouth i ⁇ ⁇ ⁇ ⁇ ⁇ 5 1 5 5 5 5 5 ⁇ 5 5
• Table 1 shows the properties and properties of each of the examples and the comparative kiln.
• the oxygen permeation factor was measured using a & formula ⁇ film oxygen permeability meter. Unit is cc (STP) cm. / Cm 2 ⁇ sec ⁇ cm. Ru Oh in Hg o
• Table Si hardness is shown as Nu; 7 ° fei S and pencil hardness, respectively.
• the brush hardness test was performed in accordance with Jis 5401 (the tangent as angle was measured by a liquid angle method with an erma tangent angle measurement. The unit is shown in degrees.
• the workability of a hard contact lens is defined as the state during normal lens processing, with the metal methacrylate rate as the main ⁇ component.
• the quality was very good, those that were very good, those that were good, and those that were poor were X.
• the sexual intercourse, the layman, or the lens were slumbered, and those that were very nervous were marked with ⁇ , those that were good with ⁇ , and those that were poor with X. o
• Stain resistance is as low as 3% in a liquid containing a mixture of liquid components such as white and 3. After that, surf. Wash the surface with water and surf. The dirt substances adhering to the s surface were compared by ⁇ i3 ⁇ 4i 'festival, microscopic observation, and ultraviolet spectrophotometry. ⁇ , somewhat
• Table 2 shows the methyl metal create and tris (trimethylsiloxy) silylves.
• Lo hee Metal methacrylates, methacrylic acid and tetraethylenic, and conventional oxygen from lycomethacrylates Transient hardware, contact lens material, and the above-mentioned four monomer components, and a fluorine-containing monomer that is a fluorine-containing monomer.
• the translucent hearts obtained from a mixture of monomers in which iJU was used as a plate, the physical properties of contact lens materials, and the characteristics were shown.
• composition ratios of the monos, except for the trifle-pole and meta-rates of A, B, and C, are the same as those of a, b, and c. 3 ⁇ 41 Compared to the comparison, the addition of a trifinolate methacrylate to the ULJ allows the search, transitivity, fr.
• FMS pentamethinoxyloxilanil methinomethacrylate
• TBTS tiltetramethinolexi mouth xaninoleethyl methacrylate
• PH SM Trifenenino methino cysteine xaninole methino remethacrylate
• K DMA ethylene glycol, coconut acrylate

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• Physics & Mathematics (AREA)
• Health & Medical Sciences (AREA)
• Ophthalmology & Optometry (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• General Health & Medical Sciences (AREA)
• Eyeglasses (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
• Polymerisation Methods In General (AREA)

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Citations (9)

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• 1982
  • 1982-07-27 JP JP57130836A patent/JPS5919918A/ja active Granted
• 1983
  • 1983-07-25 EP EP83902291A patent/EP0114894B1/en not_active Expired
  • 1983-07-25 DE DE19833390130 patent/DE3390130T1/de active Granted
  • 1983-07-25 AU AU17794/83A patent/AU543235B2/en not_active Ceased
  • 1983-07-25 GB GB08407392A patent/GB2135476B/en not_active Expired
  • 1983-07-25 WO PCT/JP1983/000237 patent/WO1984000619A1/ja not_active Ceased
  • 1983-07-25 CH CH1548/84A patent/CH664837A5/de not_active IP Right Cessation
  • 1983-07-25 NL NLAANVRAGE8320221,A patent/NL184926C/xx not_active IP Right Cessation
  • 1983-07-25 US US06/598,283 patent/US4540761A/en not_active Expired - Lifetime
  • 1983-07-25 BR BR8307455A patent/BR8307455A/pt not_active IP Right Cessation
  • 1983-07-26 CA CA000433260A patent/CA1205943A/en not_active Expired
  • 1983-07-26 PH PH29296A patent/PH18402A/en unknown
  • 1983-07-26 ES ES524433A patent/ES8406743A1/es not_active Expired
  • 1983-07-26 KR KR1019830003527A patent/KR850001868B1/ko not_active Expired

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