JPS61285425A - Contact lens material - Google Patents

Abstract

PURPOSE:To obtain a material for a contact lens which has particularly excellent oxygen oxygen permeability and hydrophilicity and can be continuously used for a long period of time by copolymerizing respectively specific organosiloxane monomer, perfluoroalkyl ether, unsatd. acid and the ester thereof. CONSTITUTION:The copolymer of the compd. expressed by formula I (A1-A5 are an alkyl of 1-5C, arom. group, group expressed by formula II, etc., R4 is CH3, H, R5-R8, R6', R8' are an alkyl of 1-5C, arom. group and group expressed by formula III, R9, R9', R9'' are an alkyl of 1-5C, arom. group, R5', R7' are a bond chain R5'-O-R7' or an alkyl of 1-5C, arom. group and group expressed by formula III, b, b', c, c' are 0-10, d is 1-10), the compd. expressed by formula IV (X is F or group expressed by formula V, Q is -(CH2)q'-(CH2)r-O- CO-, q is 0-10, r is 2-5, Y is the group expressed by formula VI, R1, R2 is CH3, H, R3 is F, CF3, j, k are 1-4, p is 0-5, n, m are 0-200) the acid from the group of a (meth) acrylic acid and itaconic acid group and the ester, etc. of these acids is used as the contact lens material. The contact lens having excellent durability, etc. is obtd. by using such material.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to contact lens materials, and particularly to contact lenses that have excellent oxygen permeability and hydrophilicity, can be worn continuously for long periods of time, and are easy to handle. It is.

[Prior art and its problems]

Conventionally, contact lenses containing polymethyl methacrylate as a main component, for example, have been put to practical use. Polymethyl methacrylate, the main component of this contact lens, has great advantages such as excellent optical properties and durability, but its poor oxygen permeability makes it difficult to wear it for long periods of time due to corneal physiology. There is a big drawback that there is no.

Therefore, as a solution to the above-mentioned drawbacks of hard type contact lenses, water-containing contact lenses containing poly-2-hydroxyethyl methacrylate as a main component have been put into practical use, and soft type contact lenses such as these have been put into practical use. Lenses have good hydrophilicity, which makes them comfortable to wear to some extent, but they do not have sufficient oxygen permeability, so they cannot be worn continuously for long periods of time.Furthermore, they are water-containing, so they are hard type contact lenses. In comparison, it has the disadvantage that handling cram schools is troublesome.

In addition, in order to enable continuous wear, contact lenses with high water content containing, for example, N-vinylpyridone as a main component have been proposed, and these lenses exhibit favorable features in terms of hydrophilicity and oxygen permeability. However, due to its high water content, it has extremely poor mechanical strength, poor durability, and is extremely troublesome to handle.

Contact lenses made of silicone rubber or silicone resin have been proposed as contact lenses that exceed the above-mentioned contact lenses mainly composed of polymethyl methacrylate, poly 2- and droxyethyl methacrylate, or poly N-vinylvinyl tetradone. Since these materials are not hydrophilic, not only do they require surface treatment to make them hydrophilic, but the durability of the surface-treated hydrophilic film is poor, making them unsatisfactory.

[Disclosure of the invention]

The inventors have proposed the following general formula D) selected from the group consisting of aromatic groups, D groups and E groups, where D group is it, c-C4A o, -c-o-(am, ci, o)- (cu, ), -, R4 is a methyl group or a hydrogen atom, Rs-R@, R's is selected from the group consisting of an alkyl group having 1 to 5 carbon atoms, an aromatic group and a G group, The G group is t ■ R 5i-0-, Re, R≦, R”s has 1 to R// carbon atoms.

selected from the group consisting of 5 alkyl groups and aromatic groups, R≦
, R< does not represent a group, so R'i 0 R'? or is selected from the group consisting of an alkyl group having 1 to 5 carbon atoms, an aromatic group and a G group, and b, b'.

c and c' are integers of 0 to 10, d is an integer of 1 to 10, and the E group is -(CH*)sO(CHtCH 0)e-Rs*
, −(cib)fo(cIIlcso),c
-c@.

f is 2 to 3, g, )l is 0 to 5, k is an integer from 1 to 3, R
+. is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R11
is a hydrogen atom or a methyl group)) and an organosiloxane represented by the following general formula (where, L.

I'' R is a methyl group or a hydrogen atom, R1 is a fluorine atom or a C
Fslj- is an integer from 1 to 4, p is an integer from O to 5, m,
(n is an integer of 0 to 200) An ester consisting of a perfluorinated alkyl ether represented by: a monohydric or polyhydric alcohol having 1 to 10 carbon atoms and an acid selected from the group consisting of methacrylic acid, acrylic acid, and itaconic acid; /or Copolymerized using at least an ester consisting of a linear or branched fluoroalkyl alcohol having 1 to 20 fluorine atoms and an acid selected from the group consisting of methacrylic acid, acrylic acid, and itaconic acid. Materials made of copolymers have excellent oxygen permeability and hydrophilicity, and contact lenses made of such materials are easy to handle, have excellent durability, and are comfortable to wear and can be worn continuously for long periods of time. It was discovered that Sarak has excellent visual acuity correction effect and dimensional stability.

The organosiloxane represented by the above general formula CI) includes, for example, methacryloxyethoxypropylpentamethyldisiloxane, acryloxyethoxypropylpentamethyldisiloxane, methacryloxyethoxypropylbutamethyltridiaxane, acryloxyethoxypropylpentamethyldisiloxane, and acryloxyethoxypropylpentamethyldisiloxane Buttetrabylheptamethyltrisiloxane, Methacryloxyethoxyprobyltris(trimethylsiloxy)silane, Acrylicyethoxyprobyltris(trimethylsiloxy)silane, Methacryloxyethoxyprobylphenyltetramethyldisiloxane, Acryloxyethoxyprobyltris(trimethylsiloxy)silane Phenyltetramethyldisiaxane, methacrytetramethyldisiloxane, methacrytetraxyethoxyptetribenzyldiethyldisiloxane, acryltetramethyldishixane, methacryltetramethyldishixane, methacryloxyethoxyprobyl n-bentylhexamethyltrisiloxane, acryloxyethoxyprobyl n -Pentylhexamethyltrisiloxane, methacryloxyethoxyprobildi-n-propylpentamethyltrisiloxane, acryloxyethoxyprobildi-n-propylpentamethyltrisiloxane, methacryloxyethoxybutetrabilphenyloctamethyltetrasiloxane, acryloxy Ethoxybutibylferoctamethyltetracysilane, methacryloxyethoxyptetramethylisobutyltetramethyldisiloxane, acryloxyethoxypropylisobutyltetramethyldisiloxane, methacryloxyethoxyprivylmethylbis(trimethylsiloxy)silane, acryloxy Ethoxyptetrabylmethylbis(trimethylsiloxy)silane, methacryloxyethoxypropyltris(dimethylschifftetrahexylsiloxy)silane, acryloxyethoxypropyltris(dimethylcyclohexylsiloxy)silane, methacryloxyethoxyptetrabylbentamethyldisiloxybis( trimethylsiloxy) silane, acrylic acidoxyethoxypropylbentamethyldisiloxybis(trimethylsiloxy)silane, methacryloxyethoxyprobil to butamethylcyclotetrasiloxane, acryloxyethoxyprobil to butamethylcyclotetrasiloxane, methacryloxyethoxyprobil Tetramethyltriprobylcyclotetrasiloxane, acryloxyethoxyprobyltetramethyltriprobylcyclotetrasiloxane, 1,3-bis(methacryloxyethoxyprobyl)-1,1,3,3-(tetramethyl)disiloxane, 1 ,5-bis(acryloxyethoxyprobyl) -1,1,3,3,5,5-(hexamethyl)trisiloxane, 1,7-bis(methacryloxyethoxyprobyl) -1,1,7,7 -tetrakis(trimethylsiloxy) -3,3,5,5-(teto>methyl)-
Tetrasiloxane, 1,3-bis(methacryloxyethoxyprobyl) -1,1,3,3-tetrakis(bis(trimethylsiloxy)methylsiloxy)disiloxane, 1,3-bis(acryloxyethoxyprobyl) -
1,1,3,3-(tetraphenyl)disiloxane, 1
．． 3-bis(methacryloxyethoxyprobyl) -1
, 1,3,3-(tetramethyl)disiloxane, 1.5
-bis(acryloxyethoxyprobyl) -1,1,
3,3,5,5-(hexamethyl)trisiloxane, 1
．． 7-bis(methacryloxyethoxyprobil)-1
,1,7,7-tetrakis(trimethylsiloxy)-3
, 3,5,5-(tetramethyl)-tetrasiloxane,
1.3-bis(methacryloxyethoxyprobyl) −
1,1,3,3-tetrakis(bis(trimethylsiloxy)methylsiloxy)disiloxane, 1,3-bis(acryloxyethoxyprobyl) -1,1,3,3-(
tetraphenyl)disiloxane, 1,5-bis(methacryoxyethoxyprobyl)-1,3,5-()dimethyl)-1,3,5-(triplivir)trisiloxane,
1,5-bis(methacryloxyethoxyprobyl) −
1,3,5,7-(tetramethyl)-3,7-(dipropyl)cyclotetrasiloxane, 1,3.5-)lis(
Acryloxyethoxyprovir) -1,3,5,7-
(tetramethyl)-7-(propyl)cyclotetrasiloxane, 1,3,5,7-tetrakis(methacryloxyethoxyprobyl)-1,3,5,7-(tetramethyl)cyclotetrasiloxane, [tris( acryloxyethoxyprobyl) dimethylsiloxytomethylsilane, [tris(methacryloxyethoxyprobyl)dimethylsiloxytomethylsilane, 1,5-bis(methacryloxyethoxyprobyl) -1,1,3,3゜5. 5
-(hexamethyl)trisiloxane, 1,3,5-tris(methacryloxyethoxyprobyl)-1,3,5,
7-(tetramethyl)-7-(propyl)cyclotetrasiloxane, 1-methacryloxyethoxyprobyl-3
-(acetoxypropyl)-1,1,3,3-(tetramethyl)disiloxane, methacryl-tetraxyethoxib-tetrabirutris(acetoxyethyldimethylsiloxy)silane, 1,3-bis(methacryloxyethoxypropyl)
-1,1,3,3-tetrakis(acetoxyethyldimethylsiloxy)disiloxane, methacryloxyethoxyprobyl-tris(carboxyethyldimethylsiloxy)silane, 1-methacryoxyethoxyprobyl-5
-((methoxyethoxyethoxycarbonyl)dimethyl) -1,1,3,3,5,5-hexamethyldisiloxane, 1-methacryloxyethoxypropyl-3-acetoxyethoxypropyl-1,1,3, 3-tetramethyldisiloxane, 1-methacryloxyethoxypuri-5-[(acetoxypropyloxycarbonyl)ethyl)-3,7-dipropyl-1,3,5.7-(tetramethyl)tetracyclosiloxane, 1-Methacryloxyethoxyprobyl-1,3,5,7-(tetramethyl)-3,5,7-)su(acetoxyethyl)tetracyclosiloxane, 1-methacryloxyethoxyprobyl-3-(hydroxyethoxy Boujbil) -1,1,
3,3-(tetramethyl)disiloxane, 1-acrylic acidoxyethoxypropyl-3-(4,7,10,13,1
6-bentaohe dioctadecyl-18-ol) -
1,1,3,3-(tetramethyl)disiloxane, 1-
Methacryloxyethoxyprobyl-3-(12-a7toxy4,7゜10-trioxidedodecyl) -1,1
, 3,3-(tetraphenyl)disiloxane, 1-acrytetraxyethoxyprobyl-3-(4,7,10,13
, -Tetraoxyhexadecyl-1,1,3,3-(tetrapentyl)disiloxane, 1-methacryloxyethoxypropyl-19-(acetoxypropyl)icosamethyldecasiloxane, 1-acryloxyethoxypropyl- 3-((3,6-cyoxyoctyl-8-ol-
1-oxycarbonyl)ethyl) -1,1,3,3-
(Tetramethyl)disiloxane, 1-methacryloxyethoxypropyl-3-((human-oxyethyloxycarbonyl)brivil)-1,1,3,3-(tetramethyl)disiloxane, 1-acryloxyethoxypropyl Biru-5-((1,4,7-)dimethyl-3,6,9-)lioxadecyloxycarponyl)ethyl) -1,1,
3,3,5,5-(hexamethyl)trisiloxane, 1
,3-bis(methacryloxyethoxyprobyl)-1
, 1,3,3-tetrakis(acetoxyprobyltetramethyldisiloxane)disiloxane, 1-methacryloxyethoxypropyl-9-[(acetoxyisopropyloxycarboel)ethyl)decamethylpentasiloxane, 1-methacryloxy Ethoxyprovir-5-[(dihydroxypropyloxy)brivil)-1,1,3,
Examples include 3,5,5-(hexamethyl)trisiloxane.

Also, the above general formula [! ] Examples of perfluoroalkyl ether monomers having K include the following.

Examples of esters consisting of a monohydric or polyhydric alcohol of CI%Cn and an acid selected from the group consisting of methacrylic acid, acrylic acid, and itaconic acid include methyl methacrylate, methyl acrylate, dimethyl itaconate, monomethyl itaconate, and ethyl methacrylate. , ethyl acrylate, diethyl itaconate, monoethyl itaconate, n-2tyvir methacrylate, n-brivyl acrylate, dipyl itaconate, monon itaconate
-Privil, isopropyl methacrylate, isopropyl acrylate, diisopropyl itaconate, monoisobutyl itaconate, n-butyl methacrylate, n-
Butyl acrylate, di-n-butyl itaconate, mono-n-butyl itaconate, pentyl methacrylate, pentyl acrylate, dibentyl itaconate, monopentyl itaconate, neopentyl methacrylate, neopentyl acrylate, cineopentyl itaconate, mononeopentyl itaconate, n-hexyl methacrylate, n
-hexyl acrylate, di-n-hexyl itaconate,
Mono-n-hexyl itaconate, cyclohexyl methacrylate, cyclohexyl acrylate, dicyclohexyl itaconate, monocyclohexyl itaconate, 2-ethylhexyl methacrylate, 2-ethylhexyl acrylate, di-2-ethylhexyl itaconate, mono-2-ethylhexyl itaconate, 1,3-butanediol dimethacrylate, 1,3-butanediol diacrylate), 1,4-butanediol dimethacrylate, 1
．． 4-butanediol diacrylate, 1,6-hexanediol diacrylate, 1,6-hexanediol diacrylate, neopentyl glycol dimethacrylate, neopentyl glycol diacrylate, trimethylolpropane trimethacrylate, trimethylolpropane triacrylate, penta Erythritol tetramethacrylate, pentaerythritol tetraacrylate, ethylene glycol monomethacrylate, ethylene glycol monoacrylate, diethylene glycol monomethacrylate, diethylene glycol monoacrylate, triethylene glycol monomethacrylate, triethylene glycol monoacrylate, 2-hydroxypropyl methacrylate, 2-hydroxypropyl methacrylate Examples include propyl acrylate, 2- and hydroxybutyl methacrylate, 2-hydroxybutyl acrylate, 2-hydroxystyrene methacrylate, and 2-hydroxystyrene acrylate.

Esters of monohydric alcohol and methacrylic acid or acrylic acid, or diesters of monohydric alcohol and itaconic acid are mainly used to improve the processability and toughness of polymer materials, and polyhydric alcohols and monoesters of methacrylic acid or acrylic acid, or 1
Monoesters of alcohol and itaconic acid are mainly used to improve the hydrophilicity of polymer materials. still,
It is also possible to use methacrylic acid, acrylic acid, acrylamide, methacrylamide, N-methylolmethacrylamide, N-vinylpyrrolidone, etc. in place of the above-mentioned esters used to improve hydrophilicity.

Further, examples of esters consisting of a linear or branched fluoroalkyl alcohol having 1 to 20 fluorine atoms and an acid selected from the group consisting of methacrylic acid, acrylic acid, and itaconic acid include 2, 2. 2-trifluoroethyl methacrylate, 2.2.2-) Real oliethyl acrylate, Bis-2,2,2-) Lifluoroethyl itaconate, 2.2.2-) Lifluoroethyl itaconate, 2,2゜3.3-Tetrafluoropropyl acrylate, 2, 2.3. )-tetrafluoropropyl acrylate, bis-2,2,3,3-tetrafluoropropyl itaconate, 2,2,3.3-tetrafluoropropyl itaconate, 2.2.3.3.4.4.5
．． 5-octafluoropentyl methacrylate, 2.2
．． 3.3.4.4.5.5-octafluoropentyl methacrylate, bis-2,2°3, 3.4.4.5.5
- Octafluoropentyl itaconate, 2.2.3.
3.4.4.5.5-Octafluoropentyl itaconate, 11(, II'!, 2H, 211-Hebutadecafluorodecyl methacrylate, III, IJ2I(.

2H-hebutadecafluoridecyl acrylate, bis-
II'l, IH, 212H-hebutadecafluorotetradecylitacone, IJII'l, 2B, 2B-hebutadecafluorodecylitaco*-), 11.11-pentadecafluorooctyl methacrylate, IH,LH-pentadecafluorooctyl Acrylate, II(, XI(
-Pentadecafluorooctyl itaconate, Bisu I
H, IH-pentadecafluorooctyl itaco$-),
III,ll'! -Pentafluoro tabavir methacrylate, IT(,II'I-Pentafluoro''propyl acrylate, bis-IFI, 1)! -Pentafluoro tetrapropyl itaconate, 1[,1[-Pentafluoro tabavir itaconate , hexafluoroisopropyl methacrylate, hexafluoroisoprivyl acrylate, bishexafluorisopropyl itaconate, hexafluoroisopropyl itaconate), 11.l
Ill-hebutafluorobutyl methacrylate), Ill
, 1B-hebutafluorobutyl methacrylate, bisIH
, IH-hebutafluorobutyl itaconate, and the like.

These esters mainly contain the
It is used together with xane to improve the oxygen permeability of the polymer material, and also improves the optical transparency.

In addition, the proportions of the organosiloxane, perfluoroalkyl ether and various esters that make up the entire copolymer as a material for contact lenses are about 5 to 80 parts by weight, about 5 to 45 parts by weight, and about 5 to 80 parts by weight, respectively. Among about 5 to 80 parts by weight of various esters, about 5 to 80 parts by weight of esters of monohydric alcohol and methacrylic acid or acrylic acid or diesters of monohydric alcohol and itaconic acid are preferred. 50 parts by weight or less of esters of fluoroalkyl alcohol and methacrylic acid, acrylic acid or itaconic acid (especially diesters are preferred when itaconic acid is used), and 50 parts by weight or less of esters of fluoroalkyl alcohol and methacrylic acid, acrylic acid or itaconic acid; About 15 parts by weight or less of diesters, triesters, and tetraesters, monoesters of polyhydric alcohols and methacrylic acid or acrylic acid, monoesters of monohydric alcohols and itaconic acid, monoesters of fluoroalkyl alcohols and itaconic acid. , or those copolymerized with a hydrophilic monomer such as methacrylic acid in a proportion of about 20 parts by weight or less instead of these esters are desirable.

Then, dimethyl-2,
2'-azobisisobutyrate, 2,2'-azobis(
4-methoxy-2,4-dimethylvaleronitrile), 2
．． 2'-azobis(2,4-dimethylvaleronitrile)
, 2.2'-azobisisobutyronitrile, benzoyl peroxide, di-tert-butyl peroxide, methyl ethyl ketone peroxide, isobutyl peroxide, diisopropyl peroxydicarbonate, etc. Therefore, polymerization is carried out.

C Example 1 55 parts by weight of methacrylichetoxyprobylbentamethyldisiaxane (hereinafter abbreviated as FMETS-1) as an organosiloxane monomer represented by the general formula (1), As the perfluoroalkyl ether, parts by weight of PFE-1s, methyl methacrylate (
(hereinafter abbreviated as MMA) 271iit parts, ethylene glycol dimethacrylate C or less EDM as a crosslinking monomer
In a mixture of 5 parts by weight of V-65 (abbreviated as A) and 81 i parts of methacrylic acid (hereinafter abbreviated as MA) as a hydrophilic monomer,
0.01 part by weight of a polymerization initiator (trade name: 2,2'-azobis(2,4-dimethylvaleronitrile)) was added, and this was added to a cylindrical polypropylene polymerization mold with a diameter of 16mm and a height of Lotm. After the upper space was replaced with nitrogen, it was kept in an open environment for 20 hours after being replaced with nitrogen.
Keep at 0℃, then 10℃ at 70℃ and 90℃ respectively.
The polymerization is maintained at 100° C. for 10 hours to complete the polymerization, and a colorless and transparent rod-shaped block is obtained.

Then, a contact lens is obtained by subjecting this rod-shaped block to normal processing.

Table 1 shows the characteristics of the contact lenses obtained using this method.

[Example 2] General formula [! ] As the organosiloxane monomers, 35 parts by weight of methacryloxyethoxyprobyl tris(trimethylsiloxy)silane (hereinafter abbreviated as METS-2) and 1,3-bis(methacryloxyethoxyprobyl)-1,1, 10 parts by weight of 3,3-(tetramethyl)dishidaxane (hereinafter abbreviated as METS-3), general formula (
1 part of PFE-215iJ as the perfluoroalkyl ether represented by 1), 22 parts by weight of MMA, 5 parts by weight of dimethyl itaconate (hereinafter abbreviated as Di-MITA), 8 parts by weight of MA as a hydrophilic monomer, and a crosslinkable monomer. as triethylene glycol dimethacrylate C below TG
V-601 (trade name, dimethyl-2,2'-azobisisobutyrate) was added to 5 parts by weight of the mixture (abbreviated as D).
Adding 0.03 parts by weight, a colorless and transparent rod-shaped boot stick is obtained in the same manner as in Example 1, and this is processed to obtain a contact lens.

Table 1 shows the characteristics of the contact lenses obtained by 5K coating on the lens.

[Example 3] 20 parts by weight of acryloxyethoxypropyltetramethyltriprobylcyclotetrasiloxane (hereinafter abbreviated as METS-4) and 1-methacryoxyethoxypropyl as organosiloxane monomers represented by general formula (I) 3-(acetoxypropyl) -1,1,3,3
- 5 parts by weight of (tetramethyl)disiloxane (hereinafter abbreviated as METS-5), 345 parts by weight of PFE-3 as perfluoroalkyl ether represented by general formula [1], 12 parts by weight of ethyl methacrylate (hereinafter abbreviated as HMA) , 4 parts by weight of cyclohexyl methacrylate (hereinafter abbreviated as CHMA), 8 parts by weight of MA as a hydrophilic monomer, 3 parts by weight of EDMA as a crosslinkable monomer and 3 parts by weight of tetraethylene glycol dimethacrylate (hereinafter abbreviated as TEGD), V
Using -650.01 parts by weight, a colorless and transparent rod-shaped block was obtained in the same manner as in Example 1, and this was processed to obtain a contact lens.

The characteristics of the contact lenses thus obtained are shown in Table IK.

[Example 4] METS-250 parts by weight as the organosiloxane monomer represented by the general formula CI), PFE-410 as the perfluoroalkyl ether represented by the general formula (i)
Parts by weight, 16'fL parts of MMA, 10 parts by weight of 2.2.2-trifluoroethyl methacrylate (hereinafter abbreviated as FM-1), 8 parts by weight of MA as a hydrophilic monomer,
A colorless and transparent rod-shaped block is obtained in the same manner as in Example 1 using 3 parts by weight of EDMA, 3 parts by weight of TGD, and 1 part by weight of V-650.0 as crosslinkable monomers, and this is processed to obtain a contact lens.

The properties of the contact lenses thus obtained are shown in Table IK.

Table 1 The unit of oxygen permeability coefficient is No-“cc (STP) a
pt/crl * sec * 1 (g [Examples 5 to 27] 5 to 80 parts of various organosiloxane monomers represented by the general formula CI), various barfluorop alkyl represented by the general formula Ether jlLffi body 5-45
Parts by weight, 80 parts by weight or less of esters of monohydric alcohol and methacrylic acid, acrylic acid or itaconic acid, 50 parts of esters of fluoroalkyl alcohol and methacrylic acid, acrylic acid or itaconic acid! 15 parts by weight or less of diesters, triesters, and tetranisters of polyhydric alcohols and methacrylic acid or acrylic acid as crosslinking agents, monoesters of polyhydric alcohols and methacrylic acid or acrylic acids as hydrophilic monomers, Using a monoester of a monohydric alcohol and itasnic acid, a monoester of a fluoroalkyl alcohol and itaconic acid, methacrylic acid, acrylic acid or N-bis; 10 parts by weight or less of rubirolidone, and 0.01 parts by weight or less of a free radical polymerization initiator. A colorless and transparent rod-shaped block was obtained in the same manner as in Example 1, and this was processed to obtain a contact lens.

The characteristics of the contact lenses thus obtained are shown in Table 2.

Claims (2)

[Claims] (1) General formula ▲ Numerical formula, chemical formula, table, etc. ▼ (However, A_1 to A_5 are alkyl groups with 1 to 5 carbon atoms,
Selected from the group consisting of aromatic groups, D groups, and E groups, D group is ▲There are mathematical formulas, chemical formulas, tables, etc.▼, R_4 is a methyl group or hydrogen atom, R_5 to R_8, R_6', R_
8' is selected from the group consisting of an alkyl group having 1 to 5 carbon atoms, an aromatic group, and a G group, and the G group is ▲There are numerical formulas, chemical formulas, tables, etc.▼, and R_9, R
_9' and R__9'' are selected from the group consisting of an alkyl group having 1 to 5 carbon atoms and an aromatic group, and R_5' and R_7' do not represent a group but represent a bonding chain of R_5'-O-R_7'. or selected from the group consisting of an alkyl group having 1 to 5 carbon atoms, an aromatic group, and a G group, and b, b', c, and c' are 0 to 10
, d is an integer from 1 to 10, and the E group is -(CH_2)_3O(CH_2CH_2O)_e-R
Selected from ＿１＿０, ▲There are mathematical formulas, chemical formulas, tables, etc.▼, ▲There are mathematical formulas, chemical formulas, tables, etc.▼, ▲There are mathematical formulas, chemical formulas, tables, etc.▼, ▲There are mathematical formulas, chemical formulas, tables, etc.▼ (e is 1
~ 5, f is 2 to 3, g is 0 to 5, k is an integer from 1 to 3, R_
1_0 is a hydrogen atom or an alkyl group having 1 to 5 carbon atoms, R_
1_1 is a hydrogen atom or a methyl group))) and the general formula ▲ has a mathematical formula, chemical formula, table, etc.▼ (However, X is a fluorine atom or a Z group, and the Z group has a ▲ mathematical formula, chemical formula, table, etc.) etc. ▼, Q is -(CH_2)_q
-or ▲There are mathematical formulas, chemical formulas, tables, etc.▼, q is an integer from 0 to 10, r is an integer from 2 to 5, Y is ▲There are mathematical formulas, chemical formulas, tables, etc.▼, R_1, R_2 are methyl groups or a hydrogen atom, R_3 is a fluorine atom, or CF_3, j, k are integers of 1 to 4, p is an integer of 0 to 5, m, n are integers of 0 to 200) and the number of carbon atoms. An ester consisting of 1 to 10 monohydric or polyhydric alcohols and an acid selected from the group consisting of methacrylic acid, acrylic acid, and itaconic acid and/or a linear or branched chain having 1 to 20 fluorine atoms. A contact lens material characterized in that it is copolymerized using at least an ester consisting of a fluoroalkyl alcohol and an acid selected from the group consisting of methacrylic acid, acrylic acid, and itaconic acid. (2) In the contact lens material according to claim 1, the weight ratio of organosiloxane, perfluoroalkyl ether, and ester is 5 to 80:5.
~45 to 5 to 80.