WO2009099164A1 - 親水性ポリシロキサンマクロモノマー、その製造および用途 - Google Patents
親水性ポリシロキサンマクロモノマー、その製造および用途 Download PDFInfo
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- WO2009099164A1 WO2009099164A1 PCT/JP2009/052019 JP2009052019W WO2009099164A1 WO 2009099164 A1 WO2009099164 A1 WO 2009099164A1 JP 2009052019 W JP2009052019 W JP 2009052019W WO 2009099164 A1 WO2009099164 A1 WO 2009099164A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/12—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/061—Polyesters; Polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/068—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/42—Introducing metal atoms or metal-containing groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/38—Polysiloxanes modified by chemical after-treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/42—Block-or graft-polymers containing polysiloxane sequences
- C08G77/46—Block-or graft-polymers containing polysiloxane sequences containing polyether sequences
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- 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
- G02B1/041—Lenses
- G02B1/043—Contact lenses
Definitions
- the present invention relates to a novel hydrophilic polysiloxane macromonomer, a method for producing the same, and an ophthalmic lens using the hydrophilic polysiloxane macromonomer, particularly a contact lens. More specifically, the present invention relates to a contact lens having both oxygen permeability and hydrophilicity, and a raw material thereof.
- Ophthalmic lenses are required to have high oxygen permeability because oxygen necessary for maintaining the health of the cornea must be supplied from the air.
- contact lenses using siloxane monomers as raw materials have been developed to improve oxygen permeability.
- contact lenses are required to have a high degree of hydrophilicity. It is said that a highly hydrophilic contact lens generally has a good wearing feeling and can be worn comfortably for a long time. In order to improve the hydrophilicity of contact lenses, it is common to use hydrophilic monomers as raw materials.
- Patent Document 1 and Patent Document 2 disclose hydrophilic contact lenses manufactured from polysiloxane containing hydrophilic side chains.
- a compound containing a polyether group, a hydroxyl group, an amide group, a quaternary amino group or the like is selected as the hydrophilic side chain, but the polysiloxane disclosed specifically has a relatively low molecular weight hydrophilic property. Since a relatively large number of functional side chains are contained per molecule, the balance between hydrophilicity and oxygen permeability is not sufficient, making it difficult to use as a raw material for ophthalmic lens materials with high oxygen permeability and high hydrophilicity. Met.
- Patent Document 3 discloses a plastic molded product as a polymerization component having a polymerizable double bond group, a hydroxyl group, an organosiloxane group, and an amide bond.
- the polymerization component makes it possible to produce a plastic molded article having high transparency and oxygen permeability, good water wettability and mechanical properties.
- the specifically disclosed compound cannot obtain effective oxygen permeability because of its short siloxane chain, and it is difficult to obtain sufficient strength because there is only one polymerizable functional group per molecule. .
- Patent Document 4 disclose a hydrous soft contact lens made of a hydrophilic siloxane monomer and a copolymer thereof.
- the hydrophilic siloxane monomer contains a fluorine-substituted hydrocarbon group and a polyoxyalkylene group as side chains in a main chain in which a polymerizable group and a polysiloxane chain are connected by a urethane group or a urea group. Since hydrophilic siloxane monomers containing urethane groups or urea groups have a large intermolecular force, their copolymers tend to have a relatively high elastic modulus, and lack flexibility that greatly affects the wearing feeling of contact lenses. It was.
- the present invention provides an ophthalmic lens having both oxygen permeability and hydrophilicity, particularly a contact lens, and a novel hydrophilic polysiloxane macromonomer that can be used as a raw material thereof, and a method for producing the same.
- the task is to do.
- hydrophilic polysiloxane containing polyoxyethylene as a hydrophilic side chain in the main chain of polysiloxane in order to achieve both high oxygen permeability and high hydrophilicity of ophthalmic lenses, particularly contact lenses. It has been found that it is effective to use a macromonomer as a raw material, and it is greatly influenced by the length of the polysiloxane main chain, the length of the hydrophilic polyoxyethylene side chain, and the content thereof, and the present invention has been achieved.
- the hydrophilic polysiloxane macromonomer represented by the general formula (1) is exemplified.
- R1 is selected from either hydrogen or a methyl group
- R2 is selected from either hydrogen or a hydrocarbon group having 1 to 4 carbon atoms.
- M is an integer of 0 to 10
- n is 4 to 100.
- a and b are integers of 1 or more, a + b is 20 to 500, and b / (a + b) is 0.01 to 0.22, and the arrangement of the siloxane units in the formula is random.
- the arrangement of siloxane units in the formula includes a random arrangement means that siloxane units containing polyoxyethylene as hydrophilic side chains and siloxane units not containing the side chains are arranged randomly. It means that a random sequence and a block sequence may coexist in one molecule, even if they are arranged in blocks. Further, the ratio of the random sequence or the block sequence is arbitrary. For example, all in one molecule may be the random sequence or the block sequence, but the random sequence and the block sequence may be included in any ratio. .
- the present invention also provides a hydrophilic polysiloxane macromonomer in which a and b in the general formula (1) are 25 to 200 and 2 to 20, respectively, and a hydrophilic polysiloxane macromonomer in which n in the general formula (1) is 5 to 20 It also relates to a monomer, a hydrophilic polysiloxane macromonomer in which a and b in the general formula (1) are 25 to 160 and 3 to 10, respectively, and n is 5 to 15.
- the present invention relates to a method for producing a hydrophilic polysiloxane macromonomer represented by the general formula (1), and is characterized by passing through a polysiloxane represented by the general formula (2) as an intermediate.
- R1 is selected from either hydrogen or a methyl group.
- M is an integer of 0 to 10
- c and d are integers of 1 or more
- c + d is 20 to 500
- d / (c + d) is 0.
- the sequence of siloxane units in the formula includes a random sequence.
- the step of producing the polysiloxane intermediate represented by the general formula (2) is performed using an acidic catalyst, and cyclic dimethylsiloxane, cyclic siloxane having hydrosilane (Si—H), and (meta It also relates to a method of carrying out by ring-opening polymerization of a siloxane having an acrylic group, and further terminating the ring-opening polymerization by a neutralization reaction with a basic aqueous solution.
- the present invention also includes subjecting the hydrophilic polysiloxane macromonomer represented by the general formula (1) to a hydrosilylation reaction between the intermediate represented by the general formula (2) and the polyethylene glycol allyl ether represented by the general formula (3).
- a hydrosilylation reaction between the intermediate represented by the general formula (2) and the polyethylene glycol allyl ether represented by the general formula (3).
- R2 is selected from either hydrogen or a hydrocarbon group having 1 to 4 carbon atoms.
- N is an integer of 4 to 100.
- the hydrosilylation reaction may include a step of using a platinum-containing catalyst as a catalyst and washing the hydrophilic polysiloxane macromonomer with a solvent after the reaction.
- the present invention provides a homopolymer of the above hydrophilic polysiloxane macromonomer, or a copolymer obtained by copolymerizing the above hydrophilic polysiloxane macromonomer and one or more polymerizable monomers,
- the present invention also relates to an ophthalmic lens material using these polymers, an ophthalmic lens using these materials, and a contact lens.
- the hydrophilic polysiloxane macromonomer of the present invention has good compatibility with the polymerizable mixture containing the hydrophilic monomer, a transparent copolymer can be obtained, and at the same time, high oxygen permeability can be maintained. Utilizing these characteristics, it is useful as an ophthalmic lens material having high hydrophilicity and high oxygen permeability.
- the ophthalmic lens is not particularly limited, it is preferably understood as a lens adapted to the anterior segment for the purposes of vision correction, examination, treatment, etc., and preferably includes, for example, an intraocular lens, a corneal lens, and a contact lens. Etc. are exemplified.
- FIG. 2 is a 1 H-NMR chart of hydrophilic polysiloxane macromonomer A.
- FIG. It is an infrared absorption chart of hydrophilic polysiloxane macromonomer A.
- a + b which determines the length of the polysiloxane main chain in the above general formula (1), which is a raw material of an ophthalmic lens having both high oxygen permeability and high hydrophilicity, particularly a contact lens, and the content of hydrophilic side chains
- a + b is 20 to 500
- b / (a + b) is 0.01 to 0.22
- n Is 4 to 100 preferably a + b is 27 to 220
- b / (a + b) is 0.01 to 0.15
- n is 5 to 20, more preferably a + b is 28 to 160
- b / (a + b) is 0.
- n is 5 to 15.
- specific a and b per molecule of hydrophilic polysiloxane macromonomer are preferably 25 to 200 and 2 to 20, respectively, more preferably 25 to 160, respectively, in which oxygen permeability and hydrophilicity are balanced. And 3-10.
- a polysiloxane intermediate represented by the following general formula (2) That is, a mixture of cyclic dimethylsiloxane, cyclic siloxane having hydrosilane (Si-H) and siloxane having (meth) acrylic groups at both ends is opened using an acidic catalyst such as sulfuric acid, trifluoromethanesulfonic acid, or acidic clay. Ring polymerization is performed to obtain a polysiloxane intermediate represented by the general formula (2) containing (meth) acrylic groups at both ends. (R1 is selected from either hydrogen or a methyl group.
- M is an integer of 0 to 10
- c and d are integers of 1 or more
- c + d is 20 to 500
- d / (c + d) is 0.
- the sequence of siloxane units in the formula includes a random sequence.
- the ratio and total number of c and d can be changed by changing the blending ratio of cyclic dimethylsiloxane, cyclic siloxane having hydrosilane (Si-H), and siloxane having (meth) acryl at both ends. It can be controlled arbitrarily.
- the polysiloxane intermediate obtained by this method does not have a single molecular weight, but has a molecular weight distribution like a normal synthetic polymer.
- a mixture of cyclic dimethylsiloxane, cyclic siloxane having hydrosilane (Si—H) and siloxane having (meth) acrylic groups at both ends is added to sulfuric acid, trifluoromethanesulfonic acid, acidic clay, etc.
- an acidic catalyst preferably trifluoromethanesulfonic acid having high acidity and high catalytic activity
- the reaction can be stopped by adding a basic aqueous solution.
- the pH of the basic aqueous solution is preferably 7 ⁇ pH ⁇ 14, more preferably weakly basic 7 ⁇ pH ⁇ 9 where side reactions are unlikely to occur.
- the reaction solvent can be used without a solvent, but a solvent that does not inhibit acid-catalyzed ring-opening polymerization can be used.
- a solvent that does not inhibit acid-catalyzed ring-opening polymerization examples thereof include tetrahydrofuran, dioxane, hexane, cyclohexane, heptane, cycloheptane, chloroform, dichloromethane, dichloroethane, dimethoxyethane, toluene, benzene, xylene, diethyl ether, diisopropyl ether, acetone, and methyl ethyl ketone.
- the reaction temperature can be 0 to 150 ° C, preferably 20 to 100 ° C, more preferably 25 to 80 ° C.
- a polymerization inhibitor such as HQ (hydroquinone), BHT (2,6-di-t-butyl-4-methylphenol) is used to suppress side reactions due to radical polymerization of (meth) acrylic groups during ring-opening polymerization. ), MQ (p-methoxyphenol) and the like can be added to the reaction system in advance.
- siloxane having (meth) acrylic groups at both ends represented by the general formula (6)
- those commercially available as TSL9706 manufactured by Momentive
- they can be synthesized by the following method. it can.
- the first synthesis method of the siloxane of the general formula (6) is shown in the following reaction formulas (c) and (d). That is, according to the reaction formula (c), hydrosilylation of a siloxane having SiH groups at both ends represented by the general formula (9) and a polyoxyalkylene having a terminal hydroxyl group and an allyl group represented by the general formula (10) By the reaction, a double-terminal hydroxyl group polyoxyalkylene / polysiloxane block copolymer represented by the general formula (7) is produced, and then the block copolymer obtained by the above reaction according to the following reaction formula (d) (7) is reacted with (meth) acrylic acid represented by general formula (8) or a reactive derivative thereof to synthesize a siloxane having (meth) acrylic groups at both ends represented by general formula (6). It is a method to do.
- R1 is selected from either hydrogen or a methyl group.
- M is an integer from 0 to 10
- e is an
- reaction formula (e) Another example of the synthesis method of the siloxane of the general formula (6) is based on the following reaction formulas (e) and (f). That is, by reaction formula (e), a polyoxyalkylene having a terminal hydroxyl group and an allyl group represented by general formula (10) is reacted with (meth) acrylic acid represented by general formula (8) or a reactive derivative thereof.
- the intermediate represented by the general formula (2) is represented by the general formula (1) by using a so-called hydrosilylation reaction in which polyethylene glycol allyl ether is added to hydrosilane using a transition metal catalyst such as chloroplatinic acid.
- a hydrophilic polysiloxane macromonomer can be obtained.
- the hydrophilic polysiloxane macromonomer is also a compound having a molecular weight distribution, like the polysiloxane intermediate.
- R2 is selected from either hydrogen or a hydrocarbon group having 1 to 4 carbon atoms.
- n is an integer of 4 to 100. Particularly preferably, n is 5 to 20, more preferably 5 to 15, and R2 is preferably hydrogen or a methyl group.
- R2 is preferably hydrogen or a methyl group.
- it is important to add polyethylene glycol allyl ether in excess of the stoichiometric ratio. As a result, side reactions such as hydrolysis caused by unreacted SiH groups can be suppressed, and a stable quality macromonomer can be obtained. Excess polyethylene glycol allyl ether can be easily removed after the reaction by a purification method using a solvent described later.
- transition metal catalyst for the hydrosilylation reaction examples include ruthenium, rhodium, iridium, osmium, platinum, etc., preferably a platinum-containing catalyst, more preferably hexachloroplatinic acid, 1,3-divinyltetramethyldisiloxane platinum.
- Complexes, platinum supported on activated carbon, and platinum dioxide are most preferable, and hexachloroplatinic acid having a high catalytic activity is most preferable.
- reaction solvent a solvent that does not inhibit the hydrosilylation reaction and does not react by itself can be used.
- examples thereof include isopropanol, tetrahydrofuran, dioxane, hexane, cyclohexane, heptane, cycloheptane, chloroform, dichloromethane, dichloroethane, dimethoxyethane, benzene, toluene, xylene and the like.
- polyethylene glycol allyl ether in which R2 is hydrogen in general formula (3) there is a method of protecting the hydroxyl group in order to suppress side reactions between the hydroxyl group and the SiH group.
- the method of adding is simple. For example, potassium acetate is particularly useful.
- the reaction temperature can be 0 to 150 ° C., preferably 25 to 100 ° C., more preferably 35 to 85 ° C.
- the reaction temperature is high, the reaction is accelerated, but a side reaction due to polymerization of a (meth) acryl group or the like may occur.
- a washing operation with a solvent can be performed.
- the target hydrophilic polysiloxane macromonomer can be precipitated and separated.
- the first solvent mentioned here is a solvent in which the macromonomer represented by the general formula (1) is easily dissolved
- the second solvent is a polyethylene glycol used in which the macromonomer represented by the general formula (1) is difficult to dissolve.
- Examples of the first solvent include methanol, ethanol, propanol, isopropanol, butanol, isobutanol, acetone, tetrahydrofuran, dioxane, chloroform, dichloromethane, dichloroethane, and ethylene glycol
- examples of the second solvent include water.
- the target macromonomer is obtained by distilling off the solvent.
- an appropriate amount of a polymerization inhibitor such as HQ (hydroquinone), BHT (2,6-di-) is used to prevent gelation. (t-butyl-4-methylphenol), MQ (p-methoxyphenol) and the like can be added in advance.
- the present invention relates to a copolymer obtained by copolymerizing the hydrophilic polysiloxane macromonomer represented by the general formula (1) alone or one or more kinds of monomers polymerizable with the hydrophilic polysiloxane macromonomer,
- An ophthalmic lens material is disclosed. Applicable ophthalmic lenses are useful for intraocular lenses, corneal lenses, and more preferably contact lenses.
- the copolymerizable monomer will be described below.
- any monomer can be used as long as it can be copolymerized, but a hydrophilic monomer is particularly useful. That is, it can be used as a monomer that improves the surface hydrophilicity of the hydrophilic polysiloxane macromonomer copolymer or changes the water content.
- hydroxyl group-containing monomers such as 2-hydroxyethyl methacrylate, 2-hydroxypropyl methacrylate, 2-hydroxybutyl acrylate, 4-hydroxybutyl acrylate, glycerol methacrylate, 3- (1,1,2,2-tetrafluoroethoxy) -2 -Hydroxyl group-containing monomers having fluorine-containing substituents such as hydroxypropyl methacrylate, carboxylic acid group-containing monomers such as methacrylic acid, acrylic acid, itaconic acid, fumaric acid and maleic acid, and alkyl substitution such as dimethylaminoethyl methacrylate and diethylaminoethyl methacrylate Amino group-containing monomer, N, N-dimethylacrylamide, N, N-diethylacrylamide, N-methylacrylamide, methylenebisacrylamide, diacetone Ruamido, N-vinyl pyrrolidone, N- vinyl-N- monomers
- Examples of other available monomers include fluorine-containing monomers such as acrylic acid fluoroalkyl esters and methacrylic acid fluoroalkyl esters, such as trifluoroethyl acrylate, tetrafluoroethyl acrylate, tetrafluoropropyl acrylate, pentafluoropropyl.
- fluorine-containing monomers such as acrylic acid fluoroalkyl esters and methacrylic acid fluoroalkyl esters, such as trifluoroethyl acrylate, tetrafluoroethyl acrylate, tetrafluoropropyl acrylate, pentafluoropropyl.
- fluorine-containing monomers such as acrylic acid fluoroalkyl esters and methacrylic acid fluoroalkyl esters, such as trifluoroethyl acrylate, tetrafluoroethyl acrylate, tetrafluor
- Acrylic acid alkyl ester monomers and methacrylic acid alkyl ester monomers can also be used as necessary. Examples include methyl acrylate, ethyl acrylate, n-propyl acrylate, n-butyl acrylate, cyclopentyl acrylate, n-stearyl acrylate, and methacrylates corresponding to these acrylates.
- the monomers described below can be copolymerized as desired.
- monomers for improving mechanical properties include aromatic vinyl compounds such as styrene, tert-butyl styrene and ⁇ -methyl styrene, and high glass transition point polymers such as t-butyl methacrylate, cyclohexyl methacrylate and isobornyl methacrylate.
- Monomers that give is particularly useful.
- ethylene glycol dimethacrylate diethylene glycol dimethacrylate, triethylene glycol dimethacrylate, polyethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, pentaerythritol tetramethacrylate, bisphenol A dimethacrylate, vinyl methacrylate, allyl methacrylate and these methacrylates
- acrylates triallyl isocyanurate, divinylbenzene, N, N′-methylenebisacrylamide and the like. These monomers may be used alone or in combination of two or more.
- the proportion of other monomers is preferably 10 to 90%, 10 to 80%, 0 to 80%, more preferably 30 to 80%, 10 to 60%, 0 to 30%, most preferably 30 to 70%, respectively. %, 20-50%, 5-20%.
- additives may be added before or after polymerization.
- the additive include various colorants, UV absorbers, antioxidants, surfactants, and compatibilizing agents.
- a hydrophilic polymer such as polyvinylpyrrolidone described in JP-A-2003-528183 can be added.
- radical polymerization method cationic polymerization, anionic polymerization, addition polymerization and the like
- a radical polymerization method in which a photopolymerization initiator is present in the monomer mixture and polymerized by irradiation with ultraviolet rays, or a radical polymerization method in which polymerization is performed by heating using an azo compound or an organic peroxide is preferable.
- the photopolymerization initiator used include organic peroxides such as benzoin ethyl ether, benzyl dimethyl ketal, ⁇ , ⁇ '-diethoxyacetophenone, 2,4,6-trimethylbenzoyldiphenylphosphine oxide.
- azo compounds such as benzoyl peroxide and t-butyl peroxide, azobisisobutyronitrile, azobisdimethylvaleronitrile and the like are used.
- the crosslinkable polymer used as the ophthalmic lens material of the present invention is, for example, a cast polymerization method in which a mixture of a hydrophilic polysiloxane macromonomer, a copolymerization monomer, and an initiator is filled in a mold and radical polymerization is performed by a known method.
- the contact lens or the like can be molded by a method in which a monomer mixture is charged into a rotating half-surface mold and polymerized, or a method in which a copolymer is frozen and cut at a low temperature. If necessary, the molded lens can be further modified by subjecting the surface to plasma treatment, ozone treatment, graft polymerization, plasma polymerization and the like.
- Example 1 1,3-bis (3-methacryloxypropyl) -1,1,3,3-tetramethyldisiloxane (TSL9706, Momentive) 9.7 g, octamethylcyclotetrasiloxane (LS8620, Shin-Etsu Chemical) 139 g, 1,3, 7.5 g of 5,7-tetramethylcyclotetrasiloxane (LS8600, Shin-Etsu Chemical) was dissolved in 170 g of chloroform, trifluoromethanesulfonic acid (Wako Pure Chemical Industries) was further added, and the mixture was stirred at 35 ° C. After 24 hours, 170 g of 0.5% aqueous sodium hydrogen carbonate solution was added to stop the reaction.
- TSL9706 Momentive
- reaction solution was washed 5 times with 170 g of pure water, and then the reaction solvent was distilled off under reduced pressure to obtain 140 g of a residue.
- the residue was washed 4 times with 28 g of acetone and 140 g of methanol, and then the washing solution was distilled off under reduced pressure to obtain 100 g of Intermediate A.
- Example 2 15 g of intermediate A and 10 g of methoxypolyethylene glycol allyl ether (Uniox PKA5007, NOF Corporation) having a molecular weight of about 400 were dissolved in 30 g of isopropanol, 0.015 g of potassium acetate and 0.003 g of chloroplatinic acid were added, and the mixture was stirred at 40 ° C. for 2 hours. After the reaction solvent was distilled off under reduced pressure, the residue was washed with 26 g of acetone and 6.5 g of pure water. After the same washing was repeated 6 times, the washing solution was distilled off under reduced pressure to obtain 13 g of the desired hydrophilic polysiloxane macromonomer A.
- methoxypolyethylene glycol allyl ether (Uniox PKA5007, NOF Corporation) having a molecular weight of about 400 were dissolved in 30 g of isopropanol, 0.015 g of potassium acetate and 0.003 g
- the chemical structural formula of the synthesized hydrophilic polysiloxane macromonomer A is shown in the general formula (12), and the arrangement of the siloxane units in the formula includes a random arrangement.
- the general formula (12) is a hydrophilic polysiloxane macromonomer in which R1 in the general formula (1) is a methyl group.
- a 1 H-NMR chart of the synthesized hydrophilic polysiloxane macromonomer A is shown in FIG. 1, and an infrared absorption chart is shown in FIG.
- Example 8 A molecular weight of about 1000 ⁇ , ⁇ -bis [3- (2-hydroxyethoxy) propyl] polydimethylsiloxane (FM4411, Chisso) 100g, methacryloyl chloride (Wako Pure Chemicals) 32g, triethylamine 40g dissolved in 500g chloroform and stirred overnight did. After adding 100 g of methanol to the reaction liquid and stirring for 2 hours, the reaction solvent was distilled off under reduced pressure to obtain 135 g of a residue. The residue was washed 5 times with 100 g of methanol and 30 g of water, and then the washing solution was distilled off under reduced pressure to obtain Intermediate D103g.
- Example 10 Hydrophilic polysiloxane macromonomer A synthesized in Example 2, N-methyl-N-vinylacetamide, N-vinylpyrrolidone, isobornyl methacrylate, triallyl isocyanurate, and polymerization initiator 2,4,6-trimethylbenzoyl Diphenylphosphine oxide was mixed and stirred at a weight ratio of 66: 18: 10: 6: 0.1: 0.1. The mixed solution was put into a contact lens mold made of Soylite S (Nippon Synthetic Chemical) made of ethylene vinyl alcohol resin, and irradiated with ultraviolet rays for 1 hour in a light irradiation device to obtain a lens-like polymer.
- Soylite S Natural Chemical
- the lens was transferred into physiological saline (ISO 18369-3: 2006) and then sterilized by an autoclave to obtain contact lens A.
- the contact lens A was transparent and flexible and had good wettability.
- the water content was 37%
- the contact angle was 41 °
- the oxygen transmission coefficient (Dk) was 130
- the tensile strength was 1.5 MPa.
- Each physical property was measured by the following method.
- Examples 11-14 Contact lenses B to E were prepared in the same manner as in Example 10 except that the hydrophilic polysiloxane macro monomer A in Example 10 was changed to hydrophilic polysiloxane macro monomers B to E, and their physical properties were evaluated. The evaluation results are shown in Table 1.
- Example 15 Hydrophilic polysiloxane macromonomer A synthesized in Example 2, N-methyl-N-vinylacetamide, N-vinylpyrrolidone, hydroxybutyl methacrylate, ⁇ -butyl- ⁇ - ⁇ 3- [2- (2-methacryloxyethyl) Carbamoyloxy) ethoxy] propyl ⁇ polydimethylsiloxane, isobornyl methacrylate, triallyl isocyanurate, 2,4,6-trimethylbenzoyldiphenylphosphine oxide, and dioctyl sodium sulphosuccinate 44:10:30: The mixture was mixed and stirred at a weight ratio of 10: 10: 6: 0.1: 0.1: 0.5.
- the mixed solution was put into a contact lens mold manufactured by Solite Co., Ltd. (Nippon Synthetic Chemical), and irradiated with ultraviolet rays for 1 hour in a light irradiation device to obtain a lens-like polymer. This was immersed in ethyl alcohol overnight and then immersed in water for one day. The lens was transferred into physiological saline (ISO 18369-3: 2006) and then sterilized by an autoclave to obtain a contact lens F.
- the contact lens F was transparent and flexible and had good wettability.
- the water content was 44%
- the contact angle was 44 °
- the oxygen permeability coefficient (Dk) was 115
- the tensile strength was 3.0 MPa.
- Examples 16-17 Contact lenses G to H were produced in the same manner as in Example 17, except that the hydrophilic polysiloxane macromonomer A in Example 15 was changed to hydrophilic polysiloxane macromonomers F to G, and the physical properties thereof were evaluated. The evaluation results are shown in Table 1.
- Example 18 Hydrophilic polysiloxane macromonomer A synthesized in Example 2, N-methyl-N-vinylacetamide, methyl methacrylate, triethylene glycol dimethacrylate, 2-hydroxy-4-acryloxyethoxybenzophenone, 2,2′-azobis ( 2,4 dimethylvaleronitrile), and dimethylsiloxane-ethylene oxide block copolymer (DBE712, Gelest) as an additive were mixed and stirred at a weight ratio of 35: 47: 17: 0.2: 0.9: 0.5: 25. . The mixed solution was repeatedly subjected to reduced pressure and nitrogen purge twice to sufficiently remove oxygen in the mixed solution, and then placed in a contact lens mold made of polypropylene.
- DBE712 dimethylsiloxane-ethylene oxide block copolymer
- the mold was placed in a dedicated chamber and purged with nitrogen, and then this was heated at 55 ° C. for 30 minutes and then at 80 ° C. for 60 minutes to obtain a lens-like polymer. This was immersed in ethyl alcohol overnight and then immersed in water for one day. The lens was transferred into physiological saline (ISO 18369-3: 2006) and then sterilized by an autoclave to obtain contact lens I.
- Contact lens I was transparent and flexible, and also had good wettability. When the physical properties were evaluated, the water content was 40%, the contact angle was 42 °, the oxygen transmission coefficient (Dk) was 110, and the tensile strength was 2.5 MPa.
- Comparative Examples 4-6 Contact lenses J to L were prepared in the same manner as in Example 10 except that the hydrophilic polysiloxane macromonomer A in Example 10 was changed to hydrophilic polysiloxane macromonomers H to J, and the physical properties thereof were evaluated. The evaluation results are shown in Table 1.
- Example 19 1,3-bis (3-methacryloxypropyl) -1,1,3,3-tetramethyldisiloxane (TSL9706, Momentive) 74.97 g, octamethylcyclotetrasiloxane (LS8620, Shin-Etsu Chemical) 1617.17 g, 1,3 , 5,7 Tetramethylcyclotetrasiloxane (LS8600, Shin-Etsu Chemical) 87.25 g was dissolved in 1347.63 g of chloroform, 10.06 g of trifluoromethanesulfonic acid (Wako Pure Chemical Industries) was further added, and the mixture was stirred at 35 ° C.
- TSL9706 1,3-bis (3-methacryloxypropyl) -1,1,3,3-tetramethyldisiloxane
- Example 20 Intermediate H 45.05g, Polyethylene glycol allyl ether (Uniox PKA5002, NOF) with a molecular weight of about 400 is dissolved in 90.45g of isopropanol, and 0.46g of 10% potassium acetate / ethanol solution, 1% chloroplatinic acid isopropanol solution 0.91 g and 5.9 mg of 2,6-di-t-butyl-4-methylphenol (BHT) were added, and the mixture was heated to reflux in an oil bath at 93 ° C. for 1 hour. The reaction solvent was distilled off under reduced pressure, and 60 g of acetone and 30 g of pure water were added to the residue.
- BHT 2,6-di-t-butyl-4-methylphenol
- Examples 23-25 Contact lenses M to O were prepared in the same manner as in Example 18 by changing the hydrophilic polysiloxane A in Example 15 to hydrophilic polysiloxanes K to M, and their physical properties were evaluated. The evaluation results are shown in Table 2.
- hydrophilic polysiloxane macromonomer of the present invention has good compatibility with the polymerizable mixture containing the hydrophilic monomer, a transparent copolymer can be obtained.
- This copolymer having both high oxygen permeability and high hydrophilicity is useful as a raw material for ophthalmic lenses, particularly high hydrophilicity and high oxygen permeability ophthalmic lenses, particularly contact lens materials.
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Abstract
Description
また、コンタクトレンズには酸素透過性以外にも高度な親水性が要求される。親水性の高いコンタクトレンズは一般に装用感がよく、長時間快適に装用することができるといわれている。コンタクトレンズの親水性を向上するためには親水性モノマーを原材料とすることが一般的である。
なお、「式中のシロキサン単位の配列はランダムな配列を含んでいる」とは、ポリオキシエチレンを親水性側鎖として含有するシロキサン単位と該側鎖を含有しないシロキサン単位は、ランダムに配列していても、ブロックで配列していても、一分子中にランダム配列とブロック配列とが共存していても良いという意味である。また、ランダム配列あるいはブロック配列の割合は任意で、例えば、一分子中の全てがランダム配列あるいはブロック配列であってもよいが、ランダム配列とブロック配列とが任意の割合で含まれていても良い。
該ヒドロシリル化反応は、触媒として白金含有触媒を使用し、反応後に親水性ポリシロキサンマクロモノマーを溶剤で洗浄する工程を含むことができる。
高酸素透過性と高親水性を兼ね備えた眼用レンズ、特に、コンタクトレンズの原材料である上記一般式(1)においてポリシロキサン主鎖の長さを決定するa+b、親水性側鎖の含有率を決定するb/(a+b)、さらに親水性側鎖であるポリオキシエチレンの連結数nの組み合わせが重要であり、a+bは20~500、b/(a+b)は0.01~0.22、nは4~100、好ましくはa+bは27~220、b/(a+b)は0.01~0.15、nは5~20、より好ましくはa+bは28~160、b/(a+b)は0.01~0.10、nは5~15である。さらに、具体的な親水性ポリシロキサンマクロモノマー1分子あたりのaとbは、それぞれ25~200と2~20が好ましく、より好ましくは酸素透過性と親水性のバランスの取れた、それぞれ25~160と3~10である。
すなわち、環状ジメチルシロキサン、ヒドロシラン(Si-H)を有する環状シロキサンおよび両末端に(メタ)アクリル基を有するシロキサンを加えた混合物を硫酸、トリフルオロメタンスルホン酸、酸性白土などの酸性触媒を用いて開環重合し、両末端に(メタ)アクリル基を含有する一般式(2)で示すポリシロキサン中間体を得る。
一般式(2)において、cとdの比率および合計数は、環状ジメチルシロキサン、ヒドロシラン(Si-H)を有する環状シロキサン、および両末端に(メタ)アクリルを有するシロキサンの配合比率を変えることで任意にコントロール可能である。本方式により得られるポリシロキサン中間体は単一の分子量ではなく、通常の合成高分子同様、分子量分布を有している。
反応溶剤としては、無溶剤でも行うことができるが、酸触媒による開環重合を阻害しない溶剤が使用できる。例えば、テトラヒドロフラン、ジオキサン、ヘキサン、シクロヘキサン、ヘプタン、シクロヘプタン、クロロホルム、ジクロロメタン、ジクロロエタン、ジメトキシエタン、トルエン、ベンゼン、キシレン、ジエチルエーテル、ジイソプロピルエーテル、アセトン、メチルエチルケトンなどが挙げられる。その中でも酸触媒の活性を抑制してしまうヘテロ元素(酸素、窒素など)を含まない溶剤が好ましい。
反応温度は、0~150℃の範囲で行うことができるが、好ましくは、20~100℃、より好ましくは25~80℃である。反応温度が高いと反応は加速されるが、(メタ)アクリル基などの重合による副反応が起こる可能性があり好ましくない。
開環重合中に、(メタ)アクリル基などのラジカル重合による副反応を抑制するために、重合禁止剤、例えばHQ(ヒドロキノン)、BHT(2,6-ジ-t-ブチル-4-メチルフェノール)、MQ(p-メトキシフェノール)等を反応系中に予め添加することもできる。
第1の溶剤としては、メタノール、エタノール、プロパノール、イソプロパノール、ブタノール、イソブタノール、アセトン、テトラヒドロフラン、ジオキサン、クロロホルム、ジクロロメタン、ジクロロエタン、エチレングリコールなどがあり、第2の溶剤としては水などが挙げられる。
精製後、溶剤を留去することで目的物のマクロモノマーが得られるが、その際にゲル化を防止するために適量の重合禁止剤、例えばHQ(ヒドロキノン)、BHT(2,6-ジ-t-ブチル-4-メチルフェノール)、MQ(p-メトキシフェノール)等を予め添加することもできる。
より寸法安定性を向上させるためには架橋性のモノマーが特に有用である。例えばエチレングリコールジメタクリレート、ジエチレングリコールジメタクリレート、トリエチレングリコールジメタクリレート、ポリエチレングリコールジメタクリレート、トリメチロールプロパントリメタクリレート、ペンタエリスリトールテトラメタクリレート、ビスフェノールAジメタクリレート、ビニルメタクリレート、アリルメタクリレート及びこれらのメタクリレート類に対応するアクリレート類、トリアリルイソシアヌレート、ジビニルベンゼン、N,N’-メチレンビスアクリルアミド等が挙げられる。これらのモノマーは1種もちいてもよいし、2種以上組み合わせて用いても良い。
成型されたレンズは必要により、さらに表面をプラズマ処理、オゾン処理、グラフト重合、プラズマ重合などを施し、改質することもできる。
1,3-ビス(3-メタクリルオキシプロピル)-1,1,3,3―テトラメチルジシロキサン(TSL9706、モメンティブ)9.7g、オクタメチルシクロテトラシロキサン(LS8620、信越化学)139g、1,3,5,7-テトラメチルシクロテトラシロキサン(LS8600、信越化学)7.5gをクロロホルム170gに溶解し、さらにトリフルオロメタンスルホン酸(和光純薬)を加え35℃で攪拌した。24時間後に0.5%炭酸水素ナトリウム水溶液170gを加え反応を停止した。反応液を純水170gで5回洗浄した後、減圧下に反応溶媒を留去し、残渣140gを得た。残渣をアセトン28g、メタノール140gで4回洗浄後、減圧下に洗浄液を留去し、中間体Aを100g得た。
中間体A15g、分子量約400のメトキシポリエチレングリコールアリルエーテル(ユニオックスPKA5007、日油)10gをイソプロパノール30gに溶解し、さらに酢酸カリウム0.015g、塩化白金酸0.003gを加え40℃で2時間攪拌した。反応溶媒を減圧下に留去した後、残渣をアセトン26g、純水6.5gで洗浄した。同様の洗浄を6回繰り返した後、減圧下に洗浄液を留去し、目的とする親水性ポリシロキサンマクロモノマーA13gを得た。
合成された親水性ポリシロキサンマクロモノマーAの化学構造式を一般式(12)に示すが、式中のシロキサン単位の配列はランダムな配列を含んでいる。一般式(12)は、一般式(1)におけるR1がメチル基の親水性ポリシロキサンマクロモノマーである。
合成された親水性ポリシロキサンマクロモノマーAの1H-NMRチャートを図1に、赤外吸収チャートを図2に示す。
1H-NMRの分析結果から親水性ポリシロキサンマクロモノマーAの一般式(1)におけるa=約90、b=約5、n=約7、m=0、また、R2はCH3であった。
実施例2におけるメトキシポリエチレングリコールアリルエーテル(ユニオックスPKA5007)を分子量約400のポリエチレングリコールアリルエーテル(PKA5002、日油)10gに変更した以外は実施例2と同様の方法で合成・洗浄し、目的とする親水性ポリシロキサンマクロモノマーB13gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約90、b=約5、n=約7、m=0、また、R2は水素であった。
実施例2におけるメトキシポリエチレングリコールアリルエーテルをユニオックスPKA5007から分子量約1500のユニオックスPKA5010(日油)10gに変更した以外は実施例2と同様の方法で合成した。反応終了後、反応液に水100gを加えウルトラフィルターP0200(アドバンテック)で限外ろ過を行った。精製後に溶媒を留去し、親水性ポリシロキサンマクロモノマーC5gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約90、b=約5、n=約35、m=0、また、R2はCH3であった。
実施例1におけるLS8600の仕込み量を15gに変更した以外は実施例1と同様の方法で合成し、中間体B110gを得た。さらに中間体B15gとユニオックスPKA5007の20gをイソプロパノール30gに溶解し、実施例2と同様に合成・洗浄し、目的とする親水性ポリシロキサンマクロモノマーD10gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約85、b=約10、n=約7、m=0、また、R2はCH3であった。
実施例1におけるLS8620の仕込み量を200gに変更した以外は実施例1と同様の方法で合成し、中間体C120gを得た。さらに実施例2における中間体Aを中間体C15gに変更した以外は実施例2と同様の方法で合成・洗浄し、目的とする親水性ポリシロキサンマクロモノマーE14gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約130、b=約5、n=約7、m=0、また、R2はCH3であった。
実施例5における中間体B6gと分子量約750のポリエチレングリコールアリルエーテル(ユニオックスPKA5004、日油)の12gをイソプロパノール15gに溶解し、さらに酢酸カリウム0.007g、塩化白金酸0.001gを加え80℃で45分、さらに還流下で1時間反応した。反応液に水100gを加えウルトラフィルターP0200(アドバンテック)で限外ろ過を行った。精製後に溶媒を留去し、親水性ポリシロキサンマクロモノマーF3gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約85、b=約10、n=約15、m=0、また、R2は水素であった。
分子量約1000のα、ω-ビス[3-(2-ヒドロキシエトキシ)プロピル]ポリジメチルシロキサン(FM4411、チッソ)100g、塩化メタクリロイル(和光純薬)32g、トリエチルアミン40gをクロロホルム500gに溶解し一晩攪拌した。反応液にメタノール100gを添加し2時間攪拌させた後、減圧下に反応溶媒を留去し、残渣135gを得た。残渣をメタノール100g、水30gで5回洗浄した後、減圧下に洗浄液を留去し、中間体D103gを得た。
実施例1におけるTSL9706を中間体D50gに変更した以外は実施例1と同様の方法で合成・洗浄し、中間体E 125gを得た。さらに中間体E15gとユニオックスPKA5007の10gをイソプロパノール30gに溶解し、実施例2と同様に合成・洗浄し、目的とする親水性ポリシロキサンマクロモノマーG11gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約160、b=約4、n=約7、m=1、また、R2はCH3であった。
実施例1におけるTSL9706、LS8620およびLS8600の仕込み量をそれぞれ49g、95g、0gに変更した以外は実施例1と同様の方法で合成・洗浄し目的とする親水性ポリシロキサンマクロモノマーH105gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約15、b=0、n=0、また、m=0、であった。
実施例1におけるLS8600の仕込み量を38gに変更した以外は実施例1と同様の方法で合成し、中間体F125gを得た。さらに実施例2における中間体Aを中間体F15gに、またユニオックスPKA5007をアリルオキシエタノール(和光純薬)13gに変更した以外は実施例2と同様の方法で合成。洗浄し、目的とする親水性ポリシロキサンマクロモノマーI12gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約75、b=約25、n=約1、m=0、また、R2は水素であった。
実施例1におけるLS8600の仕込み量を1.5gに変更した以外は実施例1と同様の方法で合成し、中間体G98gを得た。さらに実施例2における中間体Aを中間体G15gに、またメトキシポリエチレングリコールアリルエーテルをユニオックスPKA5007から分子量約1500のユニオックスPKA5010(日油)7.5gに変更した以外は実施例2と同様の方法で合成・洗浄し、目的とする親水性ポリシロキサンマクロモノマーJ10gを得た。
1H-NMRの分析結果から一般式(1)におけるa=約110、b=約1、n=約35、m=0、また、R2はCH3であった。
実施例2で合成した親水性ポリシロキサンマクロモノマーA、N-メチル-N-ビニルアセトアミド、N-ビニルピロリドン、イソボロニルメタクリレート、トリアリルイソシアヌレート、さらに重合開始剤2,4,6-トリメチルベンゾイルジフェニルフォスフィンオキサイドを66:18:10:6:0.1:0.1の重量比で混合攪拌した。混合液をエチレンビニルアルコール樹脂からなるソワライトS(日本合成化学)製のコンタクトレンズ用鋳型に入れ、光照射装置内で1時間紫外線を照射しレンズ状の重合体を得た。これをエチルアルコール中に一晩浸漬した後、水に一日浸漬した。レンズを生理食塩水(ISO 18369-3:2006)中に移した後に、オートクレーブにて滅菌し、コンタクトレンズAを得た。コンタクトレンズAは透明で柔軟性があり、水ぬれ性も良好であった。
物性を評価したところ含水率37%、接触角41°、酸素透過係数(Dk)は130、引張り強度1.5MPaであった。
(1)光学的透明性
目視による。曇りなく透明性良好なものを○、曇りがあり半透明なものを△、白濁し不透明なものを×とした。
(2)水ぬれ性
生理食塩水に対する水ぬれ性を目視で評価した。24時間以上生理食塩水に浸漬したレンズを生理食塩水から垂直に引き上げ、レンズ表面上の半分以上に水膜が5秒以上保持されるものを○、1~5秒のものを△、1秒未満のものを×とした。
(3)含水率
レンズを生理食塩水に37℃で72時間静置した後、レンズを取り出し表面付着水をふき取り秤量した。次に60℃の真空下で恒量になるまでレンズを乾燥し、その重量変化から下式により求めた。
含水率(%)=(重量変化/乾燥前重量)x100
・ 接触角
接触角測定装置DropMaster500(協和界面科学)を用い、25℃で材料表面と水滴との接触角を測定した。
(5)酸素透過性
A Single-lens polarographic measurement of oxygen permeability (Dk) for hypertransmissible soft contact lenses (Biomaterials 28(2007)4331-4342)に記載の方法に従って測定した。単位は(ml・cm/cm2・sec・mmHg)×10-11で表した。
(6)引張強度
引張試験機AGS-50B(島津製作所)を用い、25℃の生理食塩水中で測定した。レンズを中央部3mm幅で切り出し、破断時の強度を求めた。単位は(MPa)で表した。
実施例10における親水性ポリシロキサンマクロモノマーAを親水性ポリシロキサンマクロモノマーB~Eに変更し、実施例10と同様の方法でコンタクトレンズB~Eを作製し、その物性を評価した。評価結果は表1に示す。
実施例2で合成した親水性ポリシロキサンマクロモノマーA、N-メチル-N-ビニルアセトアミド、N-ビニルピロリドン、ヒドロキシブチルメタクリレート、α-ブチル-ω-{3-[2-(2-メタクリルオキシエチルカルバモイルオキシ)エトキシ]プロピル}ポリジメチルシロキサン、イソボロニルメタクリレート、トリアリルイソシアヌレート、2,4,6-トリメチルベンゾイルジフェニルフォスフィンオキサイド、さらに添加剤のスルホこはく酸ジオクチルナトリウムを44:10:30:10:10:6:0.1:0.1:0.5の重量比で混合攪拌した。混合液をソワライトS(日本合成化学)製のコンタクトレンズ用鋳型に入れ、光照射装置内で1時間紫外線を照射しレンズ状の重合体を得た。これをエチルアルコール中に一晩浸漬した後、水に一日浸漬した。レンズを生理食塩水(ISO 18369-3:2006)中に移した後に、オートクレーブにて滅菌し、コンタクトレンズFを得た。コンタクトレンズFは透明で柔軟性があり、水ぬれ性も良好であった。
物性を評価したところ含水率44%、接触角44°、酸素透過係数(Dk)は115、引張り強度3.0MPaであった。
実施例15における親水性ポリシロキサンマクロモノマーAを親水性ポリシロキサンマクロモノマーF~Gに変更し、実施例17と同様の方法でコンタクトレンズG~Hを作製し、その物性を評価した。評価結果は表1に示す。
実施例2で合成した親水性ポリシロキサンマクロモノマーA、N-メチル-N-ビニルアセトアミド、メチルメタクリレート、トリエチレングリコールジメタクリレート、2-ヒドロキシ-4-アクリルオキシエトキシベンゾフェノン、2,2‘-アゾビス(2,4ジメチルバレロニトリル)、さらに添加剤としてジメチルシロキサン-エチレンオキシドブロックコポリマー(DBE712、Gelest)を35:47:17:0.2:0.9:0.5:25の重量比で混合攪拌した。混合液は減圧と窒素パージを2回繰り返し混合液内の酸素を十分に除去した後、ポロプロピレン製のコンタクトレンズ用鋳型に入れた。さらに鋳型を専用チャンバー内に置き窒素置換した後、これを55℃で30分、続けて80℃で60分加熱しレンズ状の重合体を得た。これをエチルアルコール中に一晩浸漬した後、水に一日浸漬した。レンズを生理食塩水(ISO 18369-3:2006)中に移した後に、オートクレーブにて滅菌し、コンタクトレンズIを得た。コンタクトレンズIは透明で柔軟性があり、水ぬれ性も良好であった。
物性を評価したところ含水率40%、接触角42°、酸素透過係数(Dk)は110、引張り強度2.5MPaであった。
実施例10における親水性ポリシロキサンマクロモノマーAを親水性ポリシロキサンマクロモノマーH~Jに変更し、実施例10と同様の方法でコンタクトレンズJ~Lを作製し、その物性を評価した。評価結果は表1に示す。
1,3-ビス(3-メタクリルオキシプロピル)-1,1,3,3―テトラメチルジシロキサン(TSL9706、モメンティブ)74.97g、オクタメチルシクロテトラシロキサン(LS8620、信越化学)1617.17g、1,3,5,7テトラメチルシクロテトラシロキサン(LS8600、信越化学)87.25gをクロロホルム1347.63gに溶解し、さらにトリフルオロメタンスルホン酸(和光純薬)を10.06g加え35℃で攪拌した。18時間後に0.5%炭酸水素ナトリウム水溶液1347.64gを加え室温で6時間撹拌し反応を停止した。静置分離後、上層を除去し、反応液を純水1347gで7回洗浄した後、減圧下に反応溶媒を留去し、残渣1603.3gを得た。残渣にアセトン320gを加えて均一にし、これにメタノール1603gを加えて激しく撹拌後、遠心分離(7000rpm,10℃,10分)後、上層を除去した。この操作を7回繰り返し、減圧下に溶剤を留去し、中間体Hを1105.7g得た。
中間体H 45.05g、分子量約400のポリエチレングリコールアリルエーテル(ユニオックスPKA5002、日油)30.05gをイソプロパノール90.45gに溶解し、さらに10%酢酸カリウム/エタノール溶液0.46g、1%塩化白金酸イソプロパノール溶液0.91g、2,6-ジ-t-ブチル-4-メチルフェノール(BHT)5.9mgを加え93℃のオイルバスで1時間加熱還流した。反応溶媒を減圧留去し、残渣にアセトン60g、純水30gを加えて激しく撹拌後、遠心分離(7000rpm,10℃,10分)後、上層を除去した。この操作を10回繰り返し、BHT 3.3mg、p-メトキシフェノール(MQ)2.0mg、イソプロパノール60gを加え減圧濃縮した。さらにイソプロパノール50gを加え減圧濃縮し、BHT2.2mg、MQ0.8mgを追加し、目的とする親水性ポリシロキサンマクロモノマーK 55.35gを得た。
1H-NMRの分析結果から一般式(3)におけるa=約124、b=約7、n=約7、m=0、また、R2はCH3であった。
実施例20においてポリエチレングリコールアリルエーテル(ユニオックスPKA5002、日油)を分子量約400のメトキシポリエチレングリコールアリルエーテル(ユニオックスPKA5007、日油)に変更した以外は実施例20と同様の方法で合成し、目的とする親水性ポリシロキサンマクロマーL 56.83gを得た。
1H-NMRの分析結果から一般式(3)におけるa=約124、b=約7、n=約7、m=0、また、R2はCH3であった。
実施例19におけるLS8600の仕込み量を104.7gに変更した以外は実施例19と同様の方法で合成し、中間体Iを得た。さらに中間体I 45.13gとメトキシポリエチレングリコールアリルエーテル(ユニオックスPKA5007、日油)36.03gをイソプロパノール90.14gに溶解し、実施例20と同様に合成・洗浄し、目的とする親水性ポリシロキサンマクロマーM 56.80gを得た。
1H-NMRの分析結果から一般式(3)におけるa=約123、b=約9、n=約7、m=0、また、R2はCH3であった。
実施例15における親水性ポリシロキサンAを親水性ポリシロキサンK~Mに変更し、実施例18と同様の方法でコンタクトレンズM~Oを作製し、その物性を評価した。評価結果を表2に示す。
Claims (15)
- 一般式(1)におけるaおよびbがそれぞれ25~200および2~20である請求項1に記載の親水性ポリシロキサンマクロモノマー。
- 一般式(1)におけるnが5~20である請求項1ないし請求項2のいずれかに記載の親水性ポリシロキサンマクロモノマー。
- 一般式(1)におけるaおよびbがそれぞれ25~160および3~10であり、かつ、nが5~15である請求項1ないし請求項3のいずれかに記載の親水性ポリシロキサンマクロモノマー。
- 一般式(2)で示される中間体を製造する工程を酸性触媒を用いて行なう請求項5に記載の親水性ポリシロキサンマクロモノマーの製造方法。
- 一般式(2)で示される中間体を製造する工程を環状ジメチルシロキサン、ヒドロシラン(Si-H)を有する環状シロキサンおよび両末端に(メタ)アクリル基を有するシロキサンの開環重合によって行なう請求項5に記載の親水性ポリシロキサンマクロモノマーの製造方法。
- 一般式(2)で示される中間体を製造する工程を塩基性水溶液による中和反応によって反応停止する請求項7に記載の親水性ポリシロキサンマクロモノマーの製造方法。
- ヒドロシリル化反応の触媒として白金含有触媒を使用する請求項9に記載の親水性ポリシロキサンマクロモノマーの製造方法。
- 親水性ポリシロキサンマクロモノマーを溶剤で洗浄する工程を含む請求項9ないし請求項10のいずれかに記載の親水性ポリシロキサンマクロモノマーの製造方法。
- 請求項1ないし請求項4のいずれかに記載の親水性ポリシロキサンマクロモノマーの単独重合体、あるいは、該親水性ポリシロキサンマクロモノマーと1種類以上の重合可能なモノマーとを共重合して得られる共重合体。
- 少なくとも請求項12に記載の重合体を含む眼用レンズ材料。
- 請求項13に記載の材料からなる眼用レンズ。
- 請求項13に記載の材料からなるコンタクトレンズ。
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| HK11106206.4A HK1152538B (en) | 2008-02-08 | 2009-02-06 | Hydrophilic polysiloxane monomer, and production method and application thereof |
| JP2009552524A JP5490547B2 (ja) | 2008-02-08 | 2009-02-06 | 親水性ポリシロキサンマクロモノマー、その製造および用途 |
| CN200980104033.8A CN101932632B (zh) | 2008-02-08 | 2009-02-06 | 亲水性聚硅氧烷大单体、其制造及用途 |
| EP09708990.8A EP2241587B1 (en) | 2008-02-08 | 2009-02-06 | Hydrophilic polysiloxane monomer, and production method and application thereof |
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| BRPI0906434-6A BRPI0906434B1 (pt) | 2008-02-08 | 2009-02-06 | macromonômero de polissiloxano hidrofílico purificado, método de produzir o mesmo, homopolímero, material de lente oftálmica, lente oftálmica e lente de contato |
| AU2009211623A AU2009211623B2 (en) | 2008-02-08 | 2009-02-06 | Hydrophilic polysiloxane monomer, and production method and application thereof |
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| JP2021088680A (ja) * | 2019-12-05 | 2021-06-10 | 信越化学工業株式会社 | シリコーン粒子及びその製造方法 |
| JP7273702B2 (ja) | 2019-12-05 | 2023-05-15 | 信越化学工業株式会社 | シリコーン粒子の製造方法 |
| JPWO2022044117A1 (ja) * | 2020-08-25 | 2022-03-03 | ||
| JP7562681B2 (ja) | 2020-08-25 | 2024-10-07 | 株式会社メニコン | 眼用レンズ |
| WO2022044117A1 (ja) * | 2020-08-25 | 2022-03-03 | 株式会社メニコン | 眼用レンズ |
| JP7492485B2 (ja) | 2021-04-13 | 2024-05-29 | 信越化学工業株式会社 | シリコーン粒子の製造方法 |
| JP2022162673A (ja) * | 2021-04-13 | 2022-10-25 | 信越化学工業株式会社 | シリコーン粒子の製造方法 |
| JP2025519733A (ja) * | 2023-05-15 | 2025-06-26 | クーパーヴィジョン インターナショナル リミテッド | コンタクトレンズのための照射遮断剤 |
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0906434B1 (pt) | 2019-11-19 |
| CA2712094A1 (en) | 2009-08-13 |
| CN101932632A (zh) | 2010-12-29 |
| US8129442B2 (en) | 2012-03-06 |
| ES2431353T3 (es) | 2013-11-26 |
| JP5490547B2 (ja) | 2014-05-14 |
| EP2241587B1 (en) | 2013-09-25 |
| EP2241587A1 (en) | 2010-10-20 |
| CN101932632B (zh) | 2015-06-24 |
| AU2009211623B2 (en) | 2012-04-12 |
| KR101259677B1 (ko) | 2013-05-02 |
| KR20100106479A (ko) | 2010-10-01 |
| MY153130A (en) | 2014-12-31 |
| HK1152538A1 (en) | 2012-03-02 |
| BRPI0906434A2 (pt) | 2015-07-14 |
| US20090234089A1 (en) | 2009-09-17 |
| AU2009211623A1 (en) | 2009-08-13 |
| CA2712094C (en) | 2013-05-28 |
| US8524850B2 (en) | 2013-09-03 |
| MX2010008174A (es) | 2010-08-11 |
| EP2241587A4 (en) | 2012-05-16 |
| US20120184698A1 (en) | 2012-07-19 |
| JPWO2009099164A1 (ja) | 2011-05-26 |
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