JP2022113157A - polishing pad - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curable composition containing a rotaxane monomer which enhances an effect of using a rotaxane monomer, is high in productivity, and enables production of a high-quality material.

SOLUTION: A curable composition contains: (A) 100 pts.mass of a rotaxane monomer which has a composite molecule structure composed of a cyclic molecule and an axial molecule penetrating through the ring of the cyclic molecule, has an average inclusion number of the cyclic molecule in a range of 0.05 or more and 0.20 or less when the maximum inclusion number of the cyclic molecule capable of including per one axial molecule is 1, and has a polymerizable functional group; and (B) 100-100,000 pts.mass of a polymerizable monomer composition containing a polymerizable monomer having a polymerizable functional group polymerizable with the polymerizable functional group of (A) the rotaxane monomer.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

Description

TECHNICAL FIELD The present invention relates to a novel curable composition containing a rotaxane monomer and a novel cured body obtained from the curable composition.

Rotaxane has a specific composite molecular structure consisting of a cyclic molecule and a linear molecule (axis molecule) penetrating the cyclic molecule in a skewered manner. A rotaxane having bulky groups (blocking groups) arranged at both ends of the axial molecule to prevent separation (detachment) between the cyclic molecule and the axial molecule is generally called a rotaxane. Those that do not have blocking groups are said to be pseudorotaxanes. Even with this pseudo-rotaxane, if the pseudo-rotaxane itself is incorporated into the other polymer matrix and the cyclic molecules are prevented from being detached, then naturally the pseudo-rotaxane works in the same way as when the rotaxane is incorporated into the other polymer matrix.

In this rotaxane, since the cyclic molecule can relatively move on the axial molecule, it has various properties, particularly excellent mechanical properties, and is expected to have various applications. In order to impart these characteristics to various materials, many attempts have been made to further introduce a polymerizable functional group into the rotaxane structure and introduce it into various polymer materials.

As a specific development example, for example, as shown in Patent Document 1, optical materials such as contact lenses, and as described in Patent Documents 2 to 4, by expanding to thermosetting polyurethane, rollers , belts, sealings, electronic materials and optical products.

As an optical material, the rotaxane monomer is also used in the following applications. Specifically, it is in the field of photochromic spectacle lenses. Photochromic spectacle lenses are lenses that are rapidly colored and function as sunglasses outdoors exposed to light including ultraviolet rays such as sunlight, and fade and become transparent indoors where such light is not irradiated. It functions as a pair of spectacles, and its demand has been increasing in recent years. Recently, a photochromic composition containing a polyrotaxane monomer has been disclosed as a photochromic composition for use in photochromic eyeglasses (see Patent Documents 5 to 8). In Patent Documents 5 to 8, by including a polyrotaxane monomer in the photochromic composition, mechanical strength is improved by cross-linking of the polyrotaxane monomer, and excellent photochromic properties (color density and fading speed). Patent Documents 5 to 8 also disclose several techniques for molding such optical materials.

Further, application of the polyrotaxane monomer to a polishing pad material, which is a polishing member, is under study. Specifically, it is used as a pad material (hereinafter sometimes referred to as a polishing pad) in the CMP (Chemical Mechanical Polishing) method. The CMP method is a polishing method that imparts excellent surface flatness, and is particularly used in the manufacturing processes of liquid crystal displays (LCDs), glass substrates for hard disks, silicon wafers, and semiconductor devices.

The CMP method generally employs a method of supplying a slurry (polishing liquid) in which abrasive grains are dispersed in an alkaline solution or an acid solution during polishing. That is, the object to be polished is flattened by the mechanical action of the abrasive grains in the slurry and the chemical action of the alkaline solution or the acid solution. Usually, the slurry is supplied to the surface of the object to be polished, and the surface of the object to be polished is flattened by sliding the polishing pad material and bringing it into contact with the surface.

As a material for such a polishing pad, an abrasive obtained from a urethane curable composition is known (see Patent Document 9). Furthermore, an abrasive using p-phenylene diisocyanate as a polyisocyanate compound is known as one that can further improve wear resistance (see Patent Document 10). If a polyrotaxane monomer is introduced into such a polishing pad material, it can be expected that a pad with higher performance can be produced. In fact, Patent Documents 2 to 4 describe that urethane resins using polyrotaxane monomers can exhibit excellent mechanical properties and can be used for polishing pads.

WO2005/095493 WO2015/159875 JP 2017-48305 A JP 2017-75301 A WO2015/068798 WO2017/038957 WO2016/143910 WO2018/030257 JP 2007-77207 A JP 2015-178558 A

As described above, rotaxane monomers are being studied in various fields because they can impart excellent functions to the polymerized cured products (polymers) using them. However, according to the studies of the present inventors, it has been found that there is room for improvement in the following points in the prior art.

For example, when a rotaxane monomer is introduced into a urethane resin as described in Examples of Patent Documents 2 to 4, the reaction between a compound having an isocyanate group and a polyrotaxane monomer must be strictly controlled. There was room for improvement.

Furthermore, the cured products as shown in the examples of Patent Documents 1 and 5 to 8 show excellent performance, but in recent years, there is a need for those that show more mechanical properties, and improvements are made in that respect. There was room for

Accordingly, an object of the present invention is to provide a curable composition containing a rotaxane monomer, which further enhances the effect of using the rotaxane monomer, and can produce high-quality materials with high productivity.

The inventors of the present invention have made extensive studies to solve the above problems. Then, the properties of the curable composition containing the rotaxane monomer were investigated. It is considered that the reason why the cured product obtained from the cured composition containing rotaxane exhibits excellent effects is that the cyclic molecules slide in the axial molecules. Therefore, in the application of the polishing pad described in Patent Documents 9 and 10, rather than simply incorporating a known polyrotaxane into a urethane resin, the molecular structure of the rotaxane monomer that can maximize its sliding effect is used. Considering that a highly effective cured product can be obtained, the inventors conducted a study. Therefore, the present inventors thought that the number of cyclic molecules present in the axial molecule (the number of cyclic molecules penetrated by the axial molecule) might be important. In other words, we considered that the slide effect could not be sufficiently exhibited if the number of clathrated cyclic molecules with respect to the axial molecule was too large or too small, and examined the clathrate number of the cyclic molecules. As a result, in particular, when a cured product is obtained by copolymerizing another polymerizable monomer and a rotaxane monomer, it was found that the sliding effect can be further improved by setting the inclusion number within a specific range. The present invention has been completed.

That is, the present invention
(A) Having a composite molecular structure consisting of a cyclic molecule and an axial molecule penetrating through the ring of the cyclic molecule, wherein the maximum number of inclusions of the cyclic molecule per axial molecule is set to 1. When the average inclusion number of the cyclic molecule is in the range of 0.05 or more and 0.20 or less, and a rotaxane monomer having a polymerizable functional group in the molecule (hereinafter simply referred to as "(A) rotaxane monomer", or It may be referred to as "(A) component".) Per 100 parts by mass,
(B) a polymerizable monomer containing at least a polymerizable monomer having a polymerizable functional group capable of polymerizing with the polymerizable functional group of the rotaxane monomer (A) (hereinafter sometimes simply referred to as "polymerizable monomer"); It is a curable composition containing 100 to 100,000 parts by mass of the composition (hereinafter sometimes simply referred to as "(B) polymerizable monomer composition" or "(B) composition").

Furthermore, in order to make the reactivity easier to control, the hydroxyl value of the rotaxane monomer (A) is preferably 70 mgKOH/g or less. In particular, when the polymerizable monomer contained in the (B) polymerizable monomer composition is a compound having an iso(thio)cyanate group, a more remarkable effect is exhibited. By setting the hydroxyl value to 70 mgKOH/g or less, reactivity with a polymerizable monomer having an iso(thio)cyanate group can be controlled. As a result, a high-performance cured body can be obtained. Incidentally, commercially available (A) rotaxane monomers usually have a hydroxyl value of more than 70 mgKOH/g.
A second aspect of the present invention is a polishing pad obtained by curing the present invention.

A third aspect of the present invention is a photochromic curable composition, wherein the cyclic molecule of the rotaxane monomer (A) has a site exhibiting photochromic properties.

The fourth invention is a photochromic cured product obtained by curing the third invention.

In the present invention, the rotaxane monomer exhibits particularly excellent effects when used as a curable composition obtained by mixing with other polymerizable monomers. That is, it is possible to improve the mechanical properties, wear resistance, and photochromic properties of a cured product obtained from the curable composition, such as urethane foam used as a polishing pad and lenses (especially lenses containing a photochromic compound).

A photochromic cured product obtained from a curable composition containing the rotaxane monomer exhibits excellent photochromic properties and improved productivity. Moreover, the polishing pad obtained from the curable composition containing the rotaxane monomer exhibits excellent mechanical properties, polishing properties, and wear resistance, and is also excellent in productivity. Furthermore, the storage stability of the curable composition can also be improved.

It is the schematic which showed an example of the (A) rotaxane monomer which can be used by this invention.

In the present invention,
(A) The rotaxane monomer has a composite molecular structure consisting of a cyclic molecule and an axial molecule penetrating through the ring of the cyclic molecule, and has a polymerizable functional group in the molecule. A rotaxane monomer having an average clathrate number of the cyclic molecule in the range of 0.05 or more and 0.20 or less, where the maximum clathrate number that the cyclic molecule can clathrate per one axial molecule is 1. , a specific amount, or in combination with another (B) polymerizable monomer composition. In addition, the polymerizable monomer composition (B) refers to a composition in which the polymerizable monomers contained include the component (A) and are composed of copolymerizable monomers.
First, the (A) rotaxane monomer used in the present invention will be described.

(A) Rotaxane monomer A rotaxane monomer is a known compound, and as shown in FIG. 3″ and has a complex molecular structure. That is, the chain-shaped axial molecule "2" is enclosed by the cyclic molecule "3", and the axial molecule "2" penetrates the inside of the ring of the cyclic molecule "3".

Therefore, the cyclic molecule "3" can slide freely on the axial molecule "2", but bulky terminal groups "4" are formed at both ends of the axial molecule "2", and the cyclic molecule It is preferable to use one that is prevented from falling off from the axial molecule "2" of "3". In the present invention, since another (B) polymerizable monomer is used, by reacting the (B) polymerizable monomer with (A) the rotaxane monomer, the elimination of the cyclic molecule “3” can be prevented. It is possible. However, (A) in order to facilitate the production of the rotaxane monomer itself and to efficiently incorporate a structure in which the cyclic molecule “3” slides on the axial molecule “2” into the cured product, the bulky terminal group “4 ” at both ends of the axial molecule.

In the rotaxane monomer, the cyclic molecule "3" can slide on the axial molecule "2". Therefore, if it is used for a photochromic cured product, it is considered that free space can be easily formed around the photochromic compound.

Furthermore, it is believed that the slidable effect improves the abrasion resistance of the hardened body and exhibits excellent mechanical properties such as low hysteresis loss. Therefore, when used in a polishing pad agent, excellent polishing properties and abrasion resistance can be exhibited.

In the present invention, in order to maximize such an effect, the average clathrate number of the cyclic molecule is 1, where the maximum clathrate number that the cyclic molecule can clathrate per axial molecule is It is characterized by using the (A) polyrotaxane monomer in the range of 0.05 or more and 0.20 or less.

Various axial molecules are known for the (A) rotaxane monomer used in the present invention. It may be linear or branched and is generally formed of polymers.

<Axis molecule; (A) rotaxane monomer>
Examples of polymers that form the chain structure portion of such axial molecules include polyvinyl alcohol, polyvinylpyrrolidone, cellulose resins (carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, etc.), polyacrylamide, polyethylene oxide, polyethylene glycol, and polypropylene glycol. , polyvinyl acetal, polyvinyl methyl ether, polyamine, polyethyleneimine, casein, gelatin, starch, olefin resin (polyethylene, polypropylene, etc.), polyester, polyvinyl chloride, styrene resin (polystyrene, acrylonitrile-styrene copolymer resin, etc.), Acrylic resin (poly(meth)acrylate acid, polymethyl methacrylate, polymethyl acrylate, acrylonitrile-methyl acrylate copolymer resin, etc.), polycarbonate, polyurethane, vinyl chloride-vinyl acetate copolymer resin, polyvinyl butyral, polyisobutylene, polytetrahydrofuran , polyaniline, acrylonitrile-butadiene-styrene copolymer (ABS resin), polyamide (nylon, etc.), polyimide, polydiene (polyisoprene, polybutadiene, etc.), polysiloxane (polydimethylsiloxane, etc.), polysulfone, polyimine, polyacetic anhydride, Examples include polyurea, polysulfide, polyphosphazene, polyketone polyphenylene, polyhaloolefin, and the like. These polymers may be appropriately copolymerized or modified.

In the (A) rotaxane monomer used in the present invention, preferred polymers forming the chain structure portion include polyethylene glycol, polyisoprene, polyisobutylene, polybutadiene, polypropylene glycol, polytetrahydrofuran, polydimethylsiloxane, polyethylene, and polypropylene. , polyvinyl alcohol or polyvinyl methyl ether, most preferably polyethylene glycol.

If the molecular weight of the above-described axial molecule is too large, the viscosity increases when mixed with other components such as other polymerizable monomers, making handling difficult and compatibilities worsening. Tend. From this point of view, the weight average molecular weight Mw of the axial molecule is preferably 1,000 to 10,000. The (A) rotaxane polymer used in the present invention has a specific ratio of inclusion numbers of cyclic molecules. Therefore, when the weight average molecular weight of the axial molecule satisfies the above range, the sliding effect of the cyclic molecule can be exhibited to a high degree in the resulting cured product. Therefore, particularly in the relationship between the clathrate number and the molecular weight of the axial molecule, the weight-average molecular weight of the axial molecule is more preferably 1500 to 9000 in order to obtain a cured product exhibiting more excellent effects. More preferably 2000-7500. In addition, this weight average molecular weight Mw is a value measured by the GPC measurement method described in the following examples.

<Bulky group; (A) rotaxane monomer>
In the present invention, since it is used in combination with (B) the polymerizable monomer composition, the end of the axial molecule does not need to have a bulky group for preventing the cyclic molecule from slipping through. However, in order to prevent the cyclic molecules from slipping through during the production of (A) the rotaxane monomer itself, and to prevent the desired molecules from slipping through during the polymerization of the curable composition, both of the axial molecules It is preferable to have a bulky group at the end. By controlling the polymerization conditions, etc., it is possible to introduce a polyrotaxane composite structure into the cured product without having bulky groups. Bulky groups are preferably present at both ends.

Furthermore, the bulky groups formed at both ends of the chain portion (both ends of the axial molecule) are not particularly limited as long as they are groups that prevent the cyclic molecule from detaching from the axial molecule. From the viewpoint of bulkiness, adamantyl group, trityl group, fluoresceinyl group, dimethoxyphenyl group, trinitrophenyl group, and pyrenyl base can be mentioned. A phenyl group may be mentioned.

<Cyclic molecule; (A) rotaxane monomer>
In addition, the cyclic molecule may have a ring having a size capable of enclosing the axial molecule as described above. and a dicyclohexanocrown ring. A cyclodextrin ring is particularly preferred.

Cyclodextrin rings include α-form (ring inner diameter: 0.45 to 0.6 nm), β-form (ring inner diameter: 0.6-0.8 nm), and γ-form (ring inner diameter: 0.8-0.95 nm). Mixtures of these can also be used. In the present invention, α-cyclodextrin ring and β-cyclodextrin ring are particularly preferred, and α-cyclodextrin ring is most preferred. Among them, it is preferable to use a hydroxypropylated cyclodextrin ring in order to achieve the inclusion number detailed below. The presence of the hydroxypropyl group makes it difficult for the cyclic molecules that clathrate one axial molecule to aggregate during the production of (A) the rotaxane monomer, making it easier to adjust the clathrate number.

In the cyclic molecule having a ring as described above, one or more cyclic molecules are included in one axial molecule. In general, each axial molecule is enclosed by at least one or more cyclic molecules. In the rotaxane monomer (A) used in the present invention, the maximum clathrate number of cyclic molecules that can be clathrated must be 0.05 or more and 0.20 or less. If it is less than 0.05, the number of cyclic molecules is too small to exhibit the sliding effect in the cured product. On the other hand, when the clathrate number of the cyclic molecules exceeds 0.20, the distance between the cyclic molecules becomes short, and also in this case, the sliding effect in the cured body tends to decrease. Above all, when the number of inclusions of cyclic molecules is too large, cyclic molecules are densely present with respect to one axial molecule. Therefore, its mobility is reduced and its mechanical properties are degraded. Furthermore, due to the increase in molecular weight, when mixed with the polymerizable monomer composition (B), not only the handling property of the resulting curable composition is reduced, but also molding defects of the cured product tend to occur. . Therefore, in (A) the rotaxane monomer, the inclusion number is more preferably 0.06 to 0.18, more preferably 0.07 to 0.15.

The maximum number of inclusions of cyclic molecules with respect to one axial molecule can be calculated from the length of the axial molecule and the thickness of the ring of the cyclic molecule. For example, when the chain portion of the axial molecule is made of polyethylene glycol and the cyclic molecule is an α-cyclodextrin ring, the maximum inclusion number is calculated as follows. That is, _two repeating units [--CH.sub.2-- _CH.sub.2 O--] of polyethylene glycol approximate the thickness of one α-cyclodextrin ring. Therefore, the number of repeating units is calculated from the molecular weight of this polyethylene glycol, and 1/2 of this number of repeating units is obtained as the maximum inclusion number of the cyclic molecule. Assuming that the maximum number of clathrates is 1.0, the number of clathrates of the cyclic molecule is adjusted within the range described above. Note that the value of this inclusion number is an average value.

<Side chain possessed by cyclic molecule; (A) rotaxane monomer>
In addition, in the (A) rotaxane monomer used in the present invention, a side chain may be introduced into the ring of the cyclic molecule described above. This side chain is indicated by "5" in FIG.

Although the side chain is not particularly limited, it is preferably formed by repeating an organic chain having 3 to 20 carbon atoms. The number average molecular weight of such side chains should be in the range 50-10,000, preferably 100-8,000, more preferably 200-5,000, and most preferably in the range 300-1,500. The number average molecular weight of this side chain can be adjusted by the amount used when introducing the side chain, and can be obtained by calculation. However, it can also be determined from ¹ H-NMR measurement.

If the side chain is too short, it is difficult to form a space around the rotaxane monomer, which tends to inhibit the reversible photochromic reaction of the cured product obtained from the photochromic curable composition. In addition, when a cured product using a rotaxane monomer having a short side chain is used as a polishing pad material, flatness accuracy tends to decrease. Furthermore, if the side chain is too short, the compatibility with the other (B) polymerizable monomer composition tends to decrease. Conversely, if the side chain is too long, the hardness and wear resistance of the cured product tend to decrease.

Furthermore, the side chain as described above is introduced by utilizing the reactive functional group possessed by the cyclic molecule and modifying this reactive functional group (inserted by reacting with the reactive functional group). For example, the α-cyclodextrin ring has 18 OH groups (hydroxyl groups) as reactive functional groups, through which side chains are introduced (by reacting the OH groups). That is, up to 18 side chains can be introduced into one α-cyclodextrin ring. In the present invention, it is preferable that 6% to 60% of the total number of functional groups possessed by such a ring is modified with a side chain (all cyclic Side chains are preferably introduced to 6% to 60% of the total number of functional groups possessed by the molecule.). As a matter of course, the ratio of introduction of the side chain is an average value.

As will be described in detail below, the reactive functional group of the cyclic molecule is less reactive than the OH group of the side chain, so even if the degree of modification is low, problems such as reduced compatibility and bleed-out are less likely to occur. . Therefore, if the degree of modification is within the above range, more excellent effects are exhibited. Incidentally, when side chains are bonded to 9 out of 18 OH groups of the α-cyclodextrin ring, the modification degree (introduction degree) is 50%.

In the present invention, the side chain (organic chain) as described above may be linear or branched as long as the size is within the range described above. For the introduction of the side chain, it is possible to appropriately introduce the methods and compounds disclosed in International Publication No. WO2015/159875, ring-opening polymerization; radical polymerization; cationic polymerization; anionic polymerization; atom transfer radical polymerization; Living radical polymerization such as RAFT polymerization and NMP polymerization can be used. By the above method, a suitably sized side chain can be introduced by reacting a suitably selected compound with the functional group of the ring.

For example, ring-opening polymerization can introduce side chains derived from cyclic compounds such as lactones and cyclic ethers. A side chain introduced by ring-opening polymerization of a cyclic compound such as a lactone or a cyclic ether introduces an OH group as a group having an active hydrogen at the end of the side chain.

Among the cyclic compounds, cyclic ethers and lactones are preferably used from the viewpoints of easy availability, high reactivity, and easy adjustment of the size (molecular weight). Suitable cyclic ether, lactone cyclic compounds are disclosed in International Publication No. WO2015/159875.

The above cyclic compounds can be used alone, or can be used in combination.

In the present invention, the side chain-introducing compounds that are preferably used are lactone compounds such as ε-caprolactone, α-acetyl-γ-butyrolactone, α-methyl-γ-butyrolactone, γ-valerolactone and γ-butyrolactone. Compounds are particularly preferred, the most preferred being ε-caprolactone.

In addition, when introducing a side chain by reacting a cyclic compound by ring-opening polymerization, the reactive functional group (e.g., hydroxyl group) attached to the ring has poor reactivity, and steric hindrance causes direct reaction of large molecules. can be difficult. In such a case, for example, in order to react caprolactone, etc., a low-molecular-weight compound such as propylene oxide is reacted with a functional group to perform hydroxypropylation, thereby introducing a highly reactive functional group (hydroxyl group). After that, a means of introducing a side chain by ring-opening polymerization using the above-described cyclic compound can be adopted. In this case, the hydroxypropylated moieties can also be considered side chains.

In addition, a side chain having an active hydrogen group can be introduced by introducing a side chain derived from a cyclic compound such as a cyclic acetal, a cyclic amine, a cyclic carbonate, a cyclic imino ether, or a cyclic thiocarbonate by ring-opening polymerization. can be done. Among these, as specific examples of suitable cyclic compounds, those described in International Publication No. WO2015/068798 can be used.

A method of introducing a side chain into a cyclic molecule using radical polymerization is as follows. The ring possessed by the cyclic molecule of the polyrotaxane monomer does not have an active site serving as a radical initiation point. Therefore, prior to reacting the radically polymerizable compound, the functional group (OH group) of the ring is reacted with a compound for forming a radical initiation point to form an active site serving as a radical initiation point. need to keep

Organic halogen compounds are typical examples of compounds for forming the above-mentioned radical starting point, and examples include 2-bromoisobutyryl bromide, 2-bromobutyric acid, 2-bromopropionic acid, and 2-chloropropionate. acid, 2-bromoisobutyric acid, epichlorohydrin, epibromohydrin, 2-chloroethylisocyanate, and the like. That is, such an organic halogen compound is bonded to the ring by a condensation reaction with the functional group of the ring of the cyclic molecule, and introduces a group containing a halogen atom (an organic halogen compound residue) into the ring. At the time of radical polymerization, radicals are generated in this organic halogen compound residue by migration of halogen atoms, etc., and this serves as a radical polymerization initiation point, and radical polymerization proceeds.

In addition, the group (organic halogen compound residue) having an active site that serves as a radical polymerization initiation point as described above includes, for example, a hydroxyl group possessed by a ring, an amine, a carboxylic acid, an isocyanate, an imidazole, an acid anhydride, and the like. A compound having a functional group may be reacted to introduce a functional group other than a hydroxyl group, and such a functional group may be reacted with the above-mentioned organic halogen compound to introduce it.

The radically polymerizable compound used for introducing the side chain by radical polymerization includes at least one group having an ethylenically unsaturated bond, for example, a (meth)acrylate group, a vinyl group, a styryl group or the like. compounds (hereinafter referred to as ethylenically unsaturated monomers) are preferably used. As the ethylenically unsaturated monomer, an oligomer or polymer having a terminal ethylenically unsaturated bond (hereinafter referred to as macromonomer) can also be used. Specific examples of suitable ethylenically unsaturated monomers that can be used as such ethylenically unsaturated monomers are those described in International Publication No. WO2015/068798.

<Polymerizable functional group (polymerizable functional group possessed by side chain); (A) rotaxane monomer>
Furthermore, after introducing the side chain by the method described above, the functional group of the side chain may be modified with another functional group and used. FIG. 1 shows (A) a rotaxane monomer having a polymerizable functional group "6" introduced into the side chain. Among them, the polymerizable functional group "6" is preferably present at the end of the side chain.

In the present invention, "modification" refers to a reaction of reacting a functional group of a side chain with another compound to introduce a structure derived from the compound. Compounds used for modification can be used as long as they are capable of reacting with the functional group of the side chain. By selecting the compound, it is possible to introduce various polymerizable functional groups into the side chain or to modify the side chain into a group having no polymerizable group.

To illustrate the modification of the side chain, after introducing the side chain of the terminal OH group (hydroxyl group) by the ring-opening polymerization described above, both the functional group capable of reacting with the OH group of the side chain and the radically polymerizable group A radically polymerizable group can be introduced by using a compound having a group. As a matter of course, when the terminal OH group of the side chain corresponds to the polymerizable functional group, it can be used as it is as the polymerizable functional group.

Examples of functional groups that can react with the OH groups include isocyanate groups (--NCO groups), carboxyl groups (--COOH), and acid chloride groups (eg, --COCl groups). A radically polymerizable group is introduced via a urethane bond by reacting a compound having an isocyanate group. Alternatively, by reacting a compound having a carboxyl group, an acid chloride group, or the like, a radically polymerizable group is introduced via an ester bond.

Specific examples of compounds having a radically polymerizable group include compounds having an isocyanate group and a (meth)acrylate group, including 2-isocyanatoethyl methacrylate, 2-isocyanatoethyl acrylate, 1,1-(bisacryloyloxy methyl) ethyl isocyanate and the like.

Further, a compound having an acid chloride (-COCl group) and a (meth)acrylate group can be synthesized by reacting a compound having a carboxyl group and a (meth)acrylate group with a chlorinating agent such as thionyl chloride. . Compounds having a carboxyl group and a (meth)acrylate group include 2-methacryloyloxyethyl succinate and β-carboxyethyl acrylate.

Examples of modifying the functional group of the side chain to one having no polymerizable group such as an active hydrogen group or a radically polymerizable group include the following. After introducing the side chain of the terminal OH group by the ring-opening polymerization described above, instead of the functional group capable of reacting with the OH group of the side chain and the radically polymerizable group described above, an alkyl group having 2 to 20 carbon atoms, a carbon A compound having an alkyleneoxy group of 2 to 30 carbon atoms, an aryl group of 6 to 20 carbon atoms, or the like is preferably used for modification. Specific examples of this compound are shown below.

As the compound having an isocyanate group, an isocyanate compound having 2 to 20 carbon atoms (excluding the carbon atoms of the isocyanate group) is preferable from the viewpoint of the availability of raw materials and high reactivity with OH groups, and 3 to 3 carbon atoms. 10 isocyanate compounds are particularly preferred. Specifically, suitable isocyanate compounds include n-propyl isocyanate, n-butyl isocyanate, n-pentyl isocyanate, n-hexyl isocyanate, phenyl isocyanate and the like.

As the carboxylic acid chloride, a carboxylic acid chloride having 2 to 20 carbon atoms (excluding the carbon atoms of the carbonyl group) is preferable from the viewpoint of availability of raw materials and high reactivity with OH groups, and 2 carbon atoms. ∼10 carboxylic acid chlorides are particularly preferred. Specifically, suitable acid chlorides include acetyl chloride, propionyl chloride, butyryl chloride, pivaloyl chloride, hexanoyl chloride, benzoyl chloride and the like.

When a side chain is introduced into a cyclic molecule using a radically polymerizable compound, if the radically polymerizable compound has another functional group, the side chain also has a group having that functional group. It will be. Even if only the radically polymerizable group is present in the side chain, after forming the side chain with the radically polymerizable compound, part of the side chain may be modified with a group having a functional group other than the radically polymerizable group. For example, a functional group other than the radically polymerizable group can be introduced into the side chain.

As understood from the above description, the side chains introduced into the cyclic molecule may have various functional groups.

Furthermore, depending on the type of functional group possessed by the compound used for introducing the side chain, part of the side chain may be bonded to the ring functional group of the cyclic molecule possessed by another axial molecule, A crosslinked structure may be formed.

<Suitable polymerizable functional group and its number>
(A) The polymerizable functional group possessed by the rotaxane monomer is not particularly limited. Among them, the most preferred polymerizable functional groups in the present invention are OH group (hydroxyl group) and (meth)acrylate group. In the case of an OH group (hydroxyl group), if the terminal of the side chain introduced when the reactive functional group of the cyclic molecule is reacted is a hydroxyl group, it may be used as the polymerizable functional group as it is. In the case of a (meth)acrylate group, it can be introduced at the end of the side chain according to the method described above.

The number of polymerizable functional groups in the (A) polyrotaxane monomer is not particularly limited. Above all, it is preferable that at least two polymerizable functional groups are contained in the molecule, since introduction of the polyrotaxane moiety into the matrix resin exhibits excellent effects.

The polymerizable functional group is, depending on the circumstances, the one possessed by the above-described cyclic molecule or the one introduced using the above-described side chain. Among these, in consideration of reactivity, the end of the side chain is preferably a polymerizable functional group, and two or more of them are preferably present. The upper limit of the number of polymerizable functional groups is not particularly limited, but the number of moles of polymerizable functional groups introduced at the end of the side chain is 8 mmol/g with respect to the weight average molecular weight of the polyrotaxane monomer. is the number that becomes This value is obtained by dividing the number of moles of the polymerizable functional group introduced at the end of the side chain by the weight average molecular weight (Mw) of the rotaxane monomer (A). That is, it refers to the number of moles of the polymerizable functional group introduced at the end of the side chain per 1 g of the (A) rotaxane monomer. The weight average molecular weight is a value measured by gel permeation chromatography (GPC) described in detail below.

<Introduction of photochromic site>
In the present invention, (A) a rotaxane monomer in which a side chain containing a photochromic site is bound to at least one of the cyclic molecules can be used. FIG. 1 shows (A) a rotaxane monomer having a photochromic site "7" introduced into the side chain. Among them, the photochromic site "7" is preferably present at the end of the side chain.

The photochromic moiety may be directly attached to the cyclic molecule. Among them, the photochromic site is preferably introduced via a side chain of the cyclic molecule. That is, it is preferable that the side chain and the photochromic site are bound.

By introducing a photochromic site, the finally obtained cured product can be a photochromic cured product. In addition, since the sliding effect is fully exhibited, a cured body having excellent photochromic properties can be produced.

Indeno[2,1-f]naphtho[1,2-b]pyran is particularly preferred as the photochromic moiety. Among the indeno[2,1-f]naphtho[1,2-b]pyrans, a photochromic moiety represented by the following formula (A) is preferable.

ここで、
Ｒ^１００、及びＲ^２００は、それぞれ独立に、（Ａ）ロタキサンモノマーの環状分子の側鎖と結合する基、アルコキシ基、置換基を有してもよいアリールチオ基であることが好ましい。Ｒ^１が２つ存在する場合には、６、７位の炭素原子と共に、置換基（アルキル基等）を有してもよいヘテロ環を形成することもできる。

here,
R ¹⁰⁰ and R ²⁰⁰ are each independently preferably a group that binds to the side chain of the cyclic molecule of the (A) rotaxane monomer, an alkoxy group, or an optionally substituted arylthio group. When two R ¹ are present, they can form a heterocyclic ring which may have a substituent (such as an alkyl group) together with the carbon atoms at the 6- and 7-positions.

R ³⁰⁰ and R ⁴⁰⁰ are each independently preferably a group, a hydrogen atom, an alkyl group, or a cycloalkyl group that binds to the side chain of the cyclic molecule of the (A) rotaxane monomer.

R ³⁰⁰ and R ⁴⁰⁰ together are an aliphatic ring having 3 to 20 ring-membered carbon atoms together with the carbon atom at position 13 to which they are bonded; Alternatively, a condensed polycyclic ring formed by condensing an aromatic heterocyclic ring, a heterocyclic ring having 3 to 20 ring member atoms, or a condensed polycyclic ring formed by condensing an aromatic ring or an aromatic heterocyclic ring to the above heterocyclic ring. However, these rings may have substituents. Moreover, these rings may be bonded to the side chains of the cyclic molecules of the (A) rotaxane monomer.

R ⁵⁰⁰ and R ⁶⁰⁰ are each independently preferably a group that binds to the side chain of the cyclic molecule of (A) the rotaxane monomer, or an aryl group that may have a substituent.

In the above, the alkyl group preferably has 1 to 6 carbon atoms, the cycloalkyl group preferably has 3 to 8 carbon atoms, the alkoxy group preferably has 1 to 6 carbon atoms, an arylthio group, or The aryl group preferably has 6 to 12 carbon atoms.

x is an integer from 0 to 4,
y is an integer from 0 to 4,
When x is 2 to 4, multiple R ²⁰⁰ may be the same or different,
When y is 2 to 4, multiple R ¹⁰⁰ may be the same or different.

In the above R ¹⁰⁰ , R ²⁰⁰ , R ³⁰⁰ , R ⁴⁰⁰ , R ⁵⁰⁰ , and R ⁶⁰⁰ , the substituents which these groups or the ring groups formed by these groups may have mainly control the color tone and the like. These substituents do not impair the effects of the present invention. Therefore, although not particularly limited, the groups exemplified for R ¹⁰⁰ and R ²⁰⁰ , the heterocyclic group having 3 to 12 atoms, or (A) the group that binds to the side chain of the rotaxane monomer are preferred. be done.

Among them, it is preferable that only one of the photochromic sites is bonded to the cyclic molecule of (A) the rotaxane monomer. In particular, it is preferred that only one of the photochromic sites is bound to the side chain. Further, it is preferable that the side chain of the cyclic molecule of the rotaxane monomer (A) and the photochromic portion are bonded via a bond selected from an ether bond, an ester bond, an amide bond, and the like. As a method for introducing the photochromic site, the method for introducing the polymerizable functional group can be employed.

In this case, the amount of photochromic moieties contained in (A) the rotaxane monomer is preferably 1 to 20 molecules of photochromic moieties per 1 molecule of rotaxane. It should be noted that the (A) rotaxane monomer can be used even if it does not contain a photochromic site.

And in this case, (A) the rotaxane monomer is
(A) Having a composite molecular structure consisting of a cyclic molecule and an axial molecule penetrating through the ring of the cyclic molecule, wherein the maximum number of inclusions of the cyclic molecule per axial molecule is set to 1. When the cyclic molecule has an average inclusion number in the range of 0.05 or more and 0.20 or less, it becomes a rotaxane monomer having a polymerizable functional group and a photochromic site.

A photochromic cured product can be produced by using the (A) rotaxane monomer as described above. The curable composition containing the (A) rotaxane monomer having a photochromic site can be used as a cured product as it is when the resulting cured product has a sufficient color density. In addition, (D) a photochromic compound, which is not bonded to (A) the rotaxane monomer, can be separately blended in order to adjust the color and the density of the developed color.

<Suitable (A) rotaxane monomer>
In the present invention, the (A) rotaxane monomer preferably used is
The axial molecule is polyethylene glycol having dimethoxyphenyl groups or trinitrophenyl groups bonded to both ends.

Then, it is a cyclic molecule having an α-cyclodextrin ring, and a side chain (terminal OH group) is introduced into the ring with polycaprolactone.

An OH group or a (meth)acrylate group is introduced as a polymerizable functional group at the end of the side chain. Most preferably, those having an OH group at the end of the side chain are most preferably used.

Further, the number average molecular weight of the axial molecule is particularly 2,000 to 7,500.

In addition, side chains are introduced with polycaprolactone to 6% or more and 60% or less of the hydroxyl groups of the α-cyclodextrin ring, which is a cyclic molecule. The number average molecular weight of the side chains is preferably 300-600.

In addition, the number of polymerizable functional groups at the end of the side chain is preferably 2 or more to 5 mmol/g in the molecule, and more preferably 0.15 to 2.50 mmol/g. is preferred.

When the photochromic site is included, it is preferable that the photochromic site is 1 to 20 molecules per rotaxane molecule.

Furthermore, in the present invention, the hydroxyl value of (A) the rotaxane monomer is preferably 70 mgKOH/g or less. This hydroxyl value refers to the amount of highly reactive hydroxyl groups in (A) the rotaxane monomer. For example, in a cyclic molecule, a hydroxyl group with low reactivity is not subject to this hydroxyl value measurement. In the (A) rotaxane monomer used in the present invention, a shaft molecule having a relatively short molecular weight is used, and the number of inclusions of cyclic molecules is controlled to be relatively small. By adjusting the hydroxyl value to 70 mgKOH/g or less, the reaction with other (B) polymerizable monomer compositions (particularly, component (B1) described in detail below) can be controlled. As a result, it is thought that a uniform cured product can be produced. That is, when the hydroxyl value exceeds 70 mgKOH/g and becomes a high value, it means that there are many hydroxyl groups (so-called polymerizable functional groups). In addition, in the (A) rotaxane polymer in which the clathrate number is limited to a specific range, if the number of polymerizable functional groups becomes too large, it is thought that the number of locations where the rotaxane structure is present locally increases in the resulting cured product. be done. On the other hand, if the hydroxyl value is too low, it will be difficult to introduce it into the resulting polymer, and there is a risk that the sliding effect will not be exhibited sufficiently. Therefore, the hydroxyl value is preferably 70 mgKOH/g or less, more preferably 5 to 45 mgKOH/g, even more preferably 15 to 35 mgKOH/g. The value of this hydroxyl value is considered to measure the hydroxyl group possessed by the side chain.

(A) In order to adjust the hydroxyl value of the rotaxane monomer, the molecular weight of the axial molecule, the type of the cyclic molecule to be used, the degree of modification, the introduction ratio of the side chain, and furthermore, the hydroxyl group of the side chain can be adopted. The hydroxyl value is a value measured using an acetylation method in accordance with JIS K1557-1 (2007).

(A) Method for Producing Rotaxane Monomer In the present invention, the (A) method for producing rotaxane monomer can be produced by adopting a known method. For example, it can be produced by the method described in Patent Document 1. In addition, by introducing a hydroxypropyl group into the cyclic molecule, aggregation of the cyclic molecule can be suppressed during production, thereby adjusting the clathrate number.

Next, the (B) polymerizable monomer composition containing a polymerizable monomer other than the (A) rotaxane monomer and capable of being polymerized with the (A) rotaxane monomer will be described (hereinafter simply referred to as "(B) polymerizable monomer composition product” or “(B) composition”). The polymerizable monomer polymerizable with the (A) rotaxane monomer is a polymerizable monomer having a polymerizable functional group polymerizable with the polymerizable functional group possessed by the (A) rotaxane monomer (hereinafter simply referred to as "polymerizable monomer". sometimes.).

<(B) polymerizable monomer composition containing at least a polymerizable monomer having a polymerizable functional group polymerizable with the polymerizable functional group of the rotaxane monomer>
In the present invention, the polymerizable monomer contained in the (B) polymerizable monomer composition is a compound having a group capable of reacting (polymerizing) with the polymerizable functional group of the (A) rotaxane monomer. And, as a matter of course, it is a compound other than (A) the rotaxane monomer.

As the (B) polymerizable monomer composition, a known compound (monomer) can be used as long as it contains a polymerizable monomer that can be polymerized with (A) the rotaxane monomer. As described above, various polymerizable functional groups can be introduced into (A) the rotaxane monomer. A polymerizable monomer may be selected accordingly. Examples thereof include polymerizable monomers described in International Publication No. WO2015/068798.

In the present invention, for example, the polymerizable functional group possessed by (A) the rotaxane monomer is a hydroxyl group (OH group), a thiol group (SH group), an amino group (primary amino group (—NH ₂ ), or If it has a secondary amino group (-NHR; R is a substituent, such as an alkyl group) and a polymerizable functional group such as an epoxy group, (B) the polymerizable monomer composition contains The polymerizable monomer is, for example, (B1) an iso(thio)cyanate compound having an iso(thio)cyanate group (hereinafter simply referred to as "(B1) iso(thio)cyanate compound" or "(B1) component"). There is).

Further, (A) when the polymerizable functional group possessed by the rotaxane monomer is an OH group, an amino group, or an iso(thio)cyanate group, the polymerizable monomer contains (B2) an epoxy group having an epoxy group A monomer (hereinafter sometimes simply referred to as "(B2) epoxy group-containing monomer" or "(B2) component") can also be selected.

On the other hand, when the polymerizable functional group possessed by (A) the rotaxane monomer is an iso(thio)cyanate group, the polymerizable monomer has at least one group selected from (B3) a hydroxyl group and a thiol group ( Thi)ol compound (hereinafter sometimes simply referred to as "(B3) (thiol compound" or "(B3) component"), and (B4) an amino group-containing monomer having an amino group (simply "(B4) It can be selected from "amino group-containing monomer" or "(B4) component").

In the present invention, the iso(thio)cyanate group refers to an isocyanate group (NCO group) or an isothiocyanate group (NCS group). Therefore, when a plurality of iso(thio)cyanate groups are present, the total number of isocyanate groups and isothiocyanate groups is the number of iso(thio)cyanate groups.

<Polymerization method/sequential addition reaction>
In the present invention, (B) the polymerizable monomer composition may contain other components as long as it contains a polymerizable monomer polymerizable with (A) the rotaxane monomer. When the polymerization reaction is a sequential addition (e.g., polycondensation/polyaddition) reaction, if at least a polymerizable monomer that can be polymerized with (A) the rotaxane monomer is included, (B) the polymerizable monomer composition contains (A ) may contain other polymerizable monomers that do not polymerize with the rotaxane monomer. In the case of a sequential addition reaction, if a polymerizable monomer that can be polymerized with component (A) is present, component (A) and component (A) will be This is because a monomer that can be polymerized with and other polymerizable monomers can be copolymerized. That is, in the case of sequential addition reactions, the (B) polymerizable monomer composition can contain not only polymerizable monomers that can be polymerized with component (A), but also polymerizable monomers that can be copolymerized. However, the composition (B) can also consist of a polymerizable monomer that can be polymerized with the component (A).

Examples of sequential addition reactions are described in more detail. Specifically, for example, when the polymerizable functional group possessed by (A) the rotaxane monomer is an active hydrogen-containing group such as a hydroxyl group, (B1) iso(thio) having an iso(thio)cyanate group as the polymerizable monomer If a cyanate compound is included, the component (B3) and the component (B4) can be included. That is, if the (B) polymerizable monomer composition contains the (B1) component that polymerizes with the (A) component, it can contain the (B3) component and the (B4) component that do not react with the (A) component. In the case of sequential addition reaction, the presence of component (B1) makes it possible to obtain a cured product obtained by copolymerizing components (A), (B1), (B3), and (B4). In this case, of course, the (B) polymerizable monomer composition can also contain the (B2) component. However, the (B) polymerizable monomer composition may consist of the (A) component and the (B1) component that can be polymerized.

In the case of the sequential addition reaction, it is preferable to store separately the reacting components (component (A) and polymerizable monomer).

<Polymerization method/chain polymerization>
When the polymerizable functional group of (A) the rotaxane monomer is a radically polymerizable group, the (B) polymerizable monomer composition is composed of a monomer having a radically polymerizable group. In the case of radical polymerization, since it is a chain polymerization, the polymerizable monomers contained in the (B) polymerizable monomer composition are all composed of monomers having radically polymerizable groups, unlike sequential addition reactions. Specifically, (B) the polymerizable monomer composition is preferably selected from component (B5), a (meth)acrylate compound having a (meth)acrylate group and an allyl compound, particularly preferably , (meth)acrylate compounds.

<Polymerization Method/Sequential Addition Reaction and Chain Polymerization>
As described above, the case of sequential addition reaction and chain polymerization has been explained, but when both of them can be performed, the following can also be done.

For example, when (A) the polymerizable functional group possessed by the rotaxane monomer has both an active hydrogen-containing group such as a hydroxyl group and a radically polymerizable group, the (B) polymerizable monomer composition has ( It may be only a (meth)acrylate compound having a meth)acrylate group, an allyl compound, or the like. Alternatively, A) when the polymerizable functional group possessed by the rotaxane monomer has both an active hydrogen-containing group such as a hydroxyl group and a radically polymerizable group, (B) the polymerizable monomer composition contains a polymerizable If it contains (B1) an iso(thio)cyanate compound as a monomer, it can also contain components (B2), (B3), (B4) and (B5).

<Others>
In the present invention, when the (A) rotaxane monomer is a pseudo-rotaxane monomer that does not have a bulky group at the terminal of the axial molecule, the terminal of the axial molecule may have a polymerizable functional group in addition to the cyclic molecule. can. Of course, the cyclic molecule may have a plurality of types of polymerizable functional groups, or the terminal of the axial molecule may have different polymerizable functional groups. may be different. However, in order to facilitate the polymerization reaction and suppress the production of by-products, it is preferable that the combination with other polymerizable monomers is as follows. That is, the polymerizable functional group possessed by the pseudo-rotaxane monomer is a polymerizable functional group such as a hydroxyl group, a thiol group, and an amino group (primary amino group or secondary amino group), and the polymerizable monomer is ( B1) It is preferably an iso(thio)cyanate compound. Moreover, when the polymerizable functional group possessed by the pseudo-rotaxane monomer is a radically polymerizable group, the polymerizable monomer is preferably a monomer having a radically polymerizable group.

<(B) Polymerizable Monomer Composition>
<Polymerization method/sequential addition reaction> polymerizable monomer (B1) iso(thia)cyanate compound (B1) component (B1) iso(thio)cyanate compound is a monomer having an isocyanate group or at least one type of isothiocyanate group. be. Of course, monomers having two groups, an isocyanate group and an iso(thio)cyanate group, are also selected. Among them, a compound having 2 to 6 iso(thio)cyanate groups in the molecule is preferable, a compound having 2 to 4 iso(thio)cyanate groups is more preferable, and a compound having 2 iso(thio)cyanate groups is more preferable.

Further, the (B1) iso(thio)cyanate compound is
(B13) a bifunctional polyiso(thio)cyanate compound having two iso(thio)cyanate groups in the molecule described below (hereinafter simply referred to as "(B13) bifunctional polyiso(thio)cyanate compound", or "(B13 ) component”) and (B32) a bifunctional active hydrogen-containing compound having two active hydrogen-containing groups in the molecule (hereinafter simply “(B32) bifunctional active hydrogen-containing compound”, or “(B32 (B12) urethane prepolymer (hereinafter sometimes simply referred to as “(B12) urethane prepolymer” or “(B12) component”) prepared by reaction with good too.

The active hydrogen-containing group is a group selected from a hydroxyl group, a thiol group, a primary amino group, or a secondary amino group (eg, --NHR; R is preferably an alkyl group). Therefore, the (B32) component is specifically exemplified in (B3) (thiol compound) or (B4) amino group-containing monomer, which will be described in detail below. Considering reactivity, the active hydrogen-containing group is preferably a hydroxyl group or a thiol group. Therefore, the (B32) component is also preferably a bifunctional poly(thiol) compound having two hydroxyl groups, two thiol groups, or one hydroxyl group and one thiol group.

The (B1) iso(thio)cyanate compound can be broadly classified into, for example, aliphatic isocyanates, alicyclic isocyanates, aromatic isocyanates, isothiocyanate compounds, and (B12) urethane prepolymers. In addition, as the (B1) iso(thio)cyanate compound, one type of compound can be used, or a plurality of types of compounds can be used. When multiple types of compounds are used, the reference mass is the total amount of the multiple types of compounds. Specific examples of these iso(thio)cyanate compounds include the following monomers.

Aliphatic isocyanate; component (B1) ethylene diisocyanate, trimethylene diisocyanate, tetramethylene diisocyanate, hexamethylene diisocyanate, octamethylene diisocyanate, nonamethylene diisocyanate, 2,2′-dimethylpentane diisocyanate, 2,2,4-trimethylhexamethylene diisocyanate , decamethylene diisocyanate, butene diisocyanate, 1,3-butadiene-1,4-diisocyanate, 2,4,4-trimethylhexamethylene diisocyanate, 1,6,11-trimethylundecamethylene diisocyanate, 1,3,6-trimethyl hexamethylene diisocyanate, 1,8-diisocyanato-4-isocyanatomethyloctane, 2,5,7-trimethyl-1,8-diisocyanato-5-isocyanatomethyloctane, bis(isocyanatoethyl)carbonate, bis(isocyanatoethyl)ether, Bifunctional isocyanate monomers such as 1,4-butylene glycol dipropyl ether-ω,ω'-diisocyanate, lysine diisocyanate methyl ester, 2,4,4-trimethylhexamethylene diisocyanate, ((B12) urethane described in detail below (B13) corresponds to the bifunctional polyiso(thio)cyanate compound constituting the prepolymer).

monofunctional isocyanate monomers such as ethyl isocyanate, n-propyl isocyanate, i-propyl isocyanate, butyl isocyanate and octadecyl isocyanate;

Alicyclic isocyanate; (B1) component isophorone diisocyanate, (bicyclo[2.2.1]heptane-2,5-diyl)bismethylene diisocyanate, (bicyclo[2.2.1]heptane-2,6-diyl) Bismethylene diisocyanate, 2β,5α-bis(isocyanate) norbornane, 2β,5β-bis(isocyanate) norbornane, 2β,6α-bis(isocyanate) norbornane, 2β,6β-bis(isocyanate) norbornane, 2,6-di( isocyanatomethyl)furan, bis(isocyanatomethyl)cyclohexane, dicyclohexylmethane-4,4′-diisocyanate, 4,4-isopropylidenebis(cyclohexyl isocyanate), cyclohexane diisocyanate, methylcyclohexane diisocyanate, dicyclohexyldimethylmethane diisocyanate, 2,2′ -dimethyldicyclohexylmethane diisocyanate, bis(4-isocyanato-n-butylidene)pentaerythritol, dimer acid diisocyanate, 2,5-bis(isocyanatomethyl)-bicyclo[2,2,1]-heptane, 2,6-bis( isocyanatomethyl)-bicyclo[2,2,1]-heptane, 3,8-bis(isocyanatomethyl)tricyclodecane, 3,9-bis(isocyanatomethyl)tricyclodecane, 4,8-bis(isocyanatomethyl) tricyclodecane, 4,9-bis(isocyanatomethyl)tricyclodecane, 1,5-diisocyanate decalin, 2,7-diisocyanate decalin, 1,4-diisocyanate decalin, 2,6-diisocyanate decalin, bicyclo[4.3 .0]nonane-3,7-diisocyanate, bicyclo[4.3.0]nonane-4,8-diisocyanate, bicyclo[2.2.1]heptane-2,5-diisocyanate and bicyclo[2.2.1 ] heptane-2,6-diisocyanate, bicyclo[2,2,2]octane-2,5-diisocyanate, bicyclo[2,2,2]octane-2,6-diisocyanate, tricyclo[5.2.1.0 ^2.6 ]decane-3,8-diisocyanate, tricyclo[5.2.1.0 ^2.6 ]decane-4,9-diisocyanate and other bifunctional isocyanate monomers ((B12) urethane prepolymers described in detail below (B13) bifunctional polyiso (thio) cyanate compound applicable to things).

2-isocyanatomethyl-3-(3-isocyanatopropyl)-5-isocyanatomethyl-bicyclo[2,2,1]-heptane, 2-isocyanatomethyl-3-(3-isocyanatopropyl)-6-isocyanatomethyl-bicyclo [2,2,1]-heptane, 2-isocyanatomethyl-2-(3-isocyanatopropyl)-5-isocyanatomethyl-bicyclo[2,2,1]-heptane, 2-isocyanatomethyl-2-(3- isocyanatopropyl)-6-isocyanatomethyl-bicyclo[2,2,1]-heptane, 2-isocyanatomethyl-3-(3-isocyanatopropyl)-5-(2-isocyanatoethyl)-bicyclo[2,2,1 ]-heptane, 2-isocyanatomethyl-3-(3-isocyanatopropyl)-6-(2-isocyanatoethyl)-bicyclo[2,1,1]-heptane, 2-isocyanatomethyl-2-(3-isocyanatopropyl )-5-(2-isocyanatoethyl)-bicyclo[2,2,1]-heptane, 2-isocyanatomethyl-2-(3-isocyanatopropyl)-6-(2-isocyanatoethyl)-bicyclo[2,2 ,1]-heptane, and polyfunctional isocyanate monomers such as 1,3,5-tris(isocyanatomethyl)cyclohexane.

Monofunctional isocyanate monomers such as cyclohexyl isocyanate.

Aromatic isocyanate; component (B1) xylylene diisocyanate (o-, m-, p-), tetrachloro-m-xylylene diisocyanate, methylenediphenyl-4,4'-diisocyanate, 4-chloro-m-xylylene diisocyanate , 4,5-dichloro-m-xylylene diisocyanate, 2,3,5,6-tetrabrom-p-xylylene diisocyanate, 4-methyl-m-xylylene diisocyanate, 4-ethyl-m-xylylene diisocyanate, bis (isocyanatoethyl)benzene, bis(isocyanatopropyl)benzene, 1,3-bis(α,α-dimethylisocyanatomethyl)benzene, 1,4-bis(α,α-dimethylisocyanatomethyl)benzene, α,α,α ',α'-tetramethylxylylene diisocyanate, bis(isocyanatobutyl)benzene, bis(isocyanatomethyl)naphthalene, bis(isocyanatomethyl)diphenyl ether, bis(isocyanatoethyl)phthalate, 2,6-di(isocyanatomethyl)furan, phenylene diisocyanate (o-, m-, p-), tolylene diisocyanate, ethylphenylene diisocyanate, isopropylphenylene diisocyanate, dimethylphenylene diisocyanate, diethylphenylene diisocyanate, diisopropylphenylene diisocyanate, trimethylbenzene triisocyanate, benzene triisocyanate, 1,3, 5-triisocyanatomethylbenzene, 1,5-naphthalene diisocyanate, methylnaphthalene diisocyanate, biphenyl diisocyanate, 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, 4,4′-diphenylmethane diisocyanate, 2,2′- Diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, 3,3'-dimethyldiphenylmethane-4,4'-diisocyanate, bibenzyl-4,4'-diisocyanate, bis(isocyanatophenyl)ethylene, 3,3'-dimethoxybiphenyl- 4,4'-diisocyanate, phenyl isocyanate methyl isocyanate, phenyl isocyanate ethyl isocyanate, tetrahydronaphthylene diisocyanate, hexahydrobenzene diisocyanate, hexahydrodiphenylmethane-4,4'-diisocyanate, diphenyl ether diisocyanate, ethylene glycol diphenyl ether diisocyanate, 1,3-propylene glycol diphenyl ether diisocyanate, benzophenone diisocyanate, diethylene glycol diphenyl ether diisocyanate, dibenzofurandi isocyanate, carbazole diisocyanate, ethylcarbazole diisocyanate, dichlorocarbazole diisocyanate, 2,4-tolylene diisocyanate, Bifunctional isocyanate monomers such as 2,6-tolylene diisocyanate (corresponding to (B13) bifunctional polyiso(thio)cyanate compound constituting (B12) urethane prepolymer described in detail below).

mesitylylene triisocyanate, triphenylmethane triisocyanate, polymeric MDI, naphthalene triisocyanate, diphenylmethane-2,4,4'-triisocyanate, 3-methyldiphenylmethane-4,4',6-triisocyanate, 4-methyl- Polyfunctional isocyanate monomers such as diphenylmethane-2,3,4',5,6-pentaisocyanate.

Monofunctional isocyanate monomers such as phenyl isocyanate, 3-i-propenyl cumyl isocyanate, 4-methoxyphenyl isocyanate, m-tolyl isocyanate, p-tolyl isocyanate, 1-naphthyl isocyanate and dimethylbenzyl isocyanate.

Isothiocyanate compound; component (B1) Bifunctional iso(thio)cyanate group-containing monomers such as p-phenylene diisothiocyanate, xylylene-1,4-diisothiocyanate, and ethylidine diisothiocyanate (described in detail below ( B12) corresponds to (B13) a bifunctional polyiso(thio)cyanate compound constituting a urethane prepolymer).

(B12) urethane prepolymer; urethane (B1) component having a terminal iso(thio)cyanate group In the present invention, the (B13) bifunctional polyiso(thio)cyanate compound and (B32) two active compounds described later in the molecule A (B12) urethane prepolymer prepared by reaction with a bifunctional active hydrogen-containing compound having a hydrogen-containing group can also be used as the (B1) iso(thio)cyanate compound.

(B12) In the case of urethane prepolymer, it is not particularly limited, but as (B13) bifunctional polyiso(thio)cyanate compound, it is particularly preferable to use the monomers exemplified below. Specifically, 1,5-naphthalene diisocyanate, xylene diisocyanate (o-, m-, p-), 2,4-tolylene diisocyanate, 2,6-tolylene diisocyanate, phenylene diisocyanate (o-, m-, p-), 2,2'-diphenylmethane diisocyanate, 2,4'-diphenylmethane diisocyanate, 4,4'-diphenylmethane diisocyanate are preferably used. It is preferable to react these with (B32) a bifunctional active hydrogen-containing compound to obtain a component (B12) having iso(thio)cyanate groups at both ends. Although not particularly limited, the weight average molecular weight of component (B12) is preferably 600 to 10,000.

(B2) Epoxy Group-Containing Monomer; Component (B2) The epoxy group-containing monomer has an epoxy group in the molecule as a polymerizable group. It is suitable when an _NH2 group or an NCO group is introduced.

Such epoxy compounds are roughly classified into aliphatic epoxy compounds, alicyclic epoxy monomers and aromatic epoxy monomers, and preferred specific examples thereof are described in WO 2015/068798. can use things.

(B3) (Thi)ol Compound; Component (B3) The (Thi)ol compound is a monomer having one or more groups selected from the group consisting of OH groups and SH groups in one molecule. Of course, monomers with two groups, an OH group and an SH group, are also chosen.

The (thio)ol compounds are roughly classified into aliphatic alcohols, alicyclic alcohols, aromatic alcohols, polyester polyols, polyether polyols, polycaprolactone polyols, polycarbonate polyols, polyacrylic polyols, thiols, OH/SH type It is classified as a polymerizable group-containing monomer. Specific examples include the following.

Aliphatic alcohol; component (B3) ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, butylene glycol, 1,5-dihydroxypentane, 1,6-dihydroxyhexane, 1,7-dihydroxyheptane, 1,8-dihydroxyoctane , 1,9-dihydroxynonane, 1,10-dihydroxydecane, 1,11-dihydroxyundecane, 1,12-dihydroxydodecane, neopentyl glycol, glyceryl monooleate, monoelaidin, polyethylene glycol, 3-methyl-1, Bifunctional polyol monomers such as 5-dihydroxypentane, dihydroxyneopentyl, 2-ethyl-1,2-dihydroxyhexane, 2-methyl-1,3-dihydroxypropane (constituting the urethane prepolymer (B12) (B32) corresponds to bifunctional active hydrogen-containing compounds).

Glycerin, trimethylolethane, trimethylolpropane, ditrimethylolpropane, trimethylolpropane tripolyoxyethylene ether (e.g. TMP-30, TMP-60, TMP-90, etc. of Nippon Nyukazai Co., Ltd.), butanetriol, 1,2- Methyl glucoside, pentaerythritol, dipentaerythritol, tripentaerythritol, sorbitol, erythritol, threitol, ribitol, arabinitol, xylitol, allitol, mannitol, dolcitol, iditol, glycol, inositol, hexanetriol, triglycerol, diglycerol, triethylene Polyfunctional polyol monomers such as glycols.

Alicyclic alcohol; Component (B3) Hydrogenated bisphenol A, cyclobutanediol, cyclopentanediol, cyclohexanediol, cycloheptanediol, cyclooctanediol, cyclohexanedimethanol, hydroxypropylcyclohexanol, tricyclo[5,2,1,0 ^2,6 ]decane-dimethanol, bicyclo[4,3,0]-nonanediol, dicyclohexanediol, tricyclo[5,3,1,13,9]dodecanediol, bicyclo[4,3,0]nonanediol methanol, tricyclo[5,3,1,1 ^3,9 ]dodecan-diethanol, hydroxypropyltricyclo[5,3,1,1 ^3,9 ]dodecanol, spiro[3,4]octanediol, butylcyclohexanediol, Bifunctional polyol monomers such as 1,1′-bicyclohexylidene diol, 1,4-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, 1,2-cyclohexanedimethanol, and o-dihydroxyxylylene (the above ( B12) Corresponding to (B32) bifunctional active hydrogen-containing compound constituting urethane prepolymer).

Polyfunctional polyol monomers such as tris(2-hydroxyethyl)isocyanurate, cyclohexanetriol, sucrose, maltitol, and lactitol.

Aromatic alcohol; component (B3) dihydroxynaphthalene, dihydroxybenzene, bisphenol A, bisphenol F, xylylene glycol, tetrabromobisphenol A, bis(4-hydroxyphenyl)methane, 1,1-bis(4-hydroxyphenyl)ethane , 1,2-bis(4-hydroxyphenyl)ethane, bis(4-hydroxyphenyl)phenylmethane, bis(4-hydroxyphenyl)diphenylmethane, bis(4-hydroxyphenyl)-1-naphthylmethane, 1,1- Bis(4-hydroxyphenyl)-1-phenylethane, 2-(4-hydroxyphenyl)-2-(3-hydroxyphenyl)propane, 2,2-bis(4-hydroxyphenyl)butane, 1,1-bis (4-hydroxyphenyl)butane, 2,2-bis(4-hydroxyphenyl)-3-methylbutane, 2,2-bis(4-hydroxyphenyl)pentane, 3,3-bis(4-hydroxyphenyl)pentane, 2,2-bis(4-hydroxyphenyl)hexane, 2,2-bis(4-hydroxyphenyl)octane, 2,2-bis(4-hydroxyphenyl)-4-methylpentane, 2,2-bis(4 -hydroxyphenyl)heptane, 4,4-bis(4-hydroxyphenyl)heptane, 2,2-bis(4-hydroxyphenyl)tridecane, 2,2-bis(4-hydroxyphenyl)octane, 2,2-bis (3-methyl-4-hydroxyphenyl)propane, 2,2-bis(3-ethyl-4-hydroxyphenyl)propane, 2,2-bis(3-n-propyl-4-hydroxyphenyl)propane, 2, 2-bis(3-isopropyl-4-hydroxyphenyl)propane, 2,2-bis(3-sec-butyl-4-hydroxyphenyl)propane, 2,2-bis(3-tert-butyl-4-hydroxyphenyl) ) propane, 2,2-bis(3-cyclohexyl-4-hydroxyphenyl)propane, 2,2-bis(3-allyl-4′-hydroxyphenyl)propane, 2,2-bis(3-methoxy-4- hydroxyphenyl)propane, 2,2-bis(3,5-dimethyl-4-hydroxyphenyl)propane, 2,2-bis(2,3,5,6-tetramethyl-4-hydroxyphenyl)propane, bis( 4-hydroxyphenyl)cyanomethane, 1-cyano-3,3-bis(4-hydroxyphenyl)butane, 2 , 2-bis(4-hydroxyphenyl)hexafluoropropane, 1,1-bis(4-hydroxyphenyl)cyclopentane, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxy phenyl)cycloheptane, 1,1-bis(3-methyl-4-hydroxyphenyl)cyclohexane, 1,1-bis(3,5-dimethyl-4-hydroxyphenyl)cyclohexane, 1,1-bis(3,5 -dichloro-4-hydroxyphenyl)cyclohexane, 1,1-bis(3-methyl-4-hydroxyphenyl)-4-methylcyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethyl Cyclohexane, 2,2-bis(4-hydroxyphenyl)norbornane, 2,2-bis(4-hydroxyphenyl)adamantane, 4,4'-dihydroxydiphenyl ether, 4,4'-dihydroxy-3,3'-dimethyldiphenyl ether , ethylene glycol bis(4-hydroxyphenyl) ether, 4,4'-dihydroxydiphenyl sulfide, 3,3'-dimethyl-4,4'-dihydroxydiphenyl sulfide, 3,3'-dicyclohexyl-4,4'-dihydroxy Diphenyl sulfide, 3,3'-diphenyl-4,4'-dihydroxydiphenyl sulfide, 4,4'-dihydroxydiphenyl sulfoxide, 3,3'-dimethyl-4,4'-dihydroxydiphenyl sulfoxide, 4,4'-dihydroxy diphenylsulfone, 4,4'-dihydroxy-3,3'-dimethyldiphenylsulfone, bis(4-hydroxyphenyl)ketone, bis(4-hydroxy-3-methylphenyl)ketone, 7,7'-dihydroxy-3, 3′,4,4′-tetrahydro-4,4,4′,4′-tetramethyl-2,2′-spirobi(2H-1-benzopyran), trans-2,3-bis(4-hydroxyphenyl) -2-butene, 9,9-bis(4-hydroxyphenyl)fluorene, 3,3-bis(4-hydroxyphenyl)-2-butanone, 1,6-bis(4-hydroxyphenyl)-1,6- hexanedione, 4,4'-dihydroxybiphenyl, m-dihydroxyxylylene, p-dihydroxyxylylene, 1,4-bis(2-hydroxyethyl)benzene, 1,4-bis(3-hydroxypropyl)benzene, 1 , 4-bis(4-hydroxybutyl) Benzene, 1,4-bis(5-hydroxypentyl)benzene, 1,4-bis(6-hydroxyhexyl)benzene, 2,2-bis[4-(2″-hydroxyethyloxy)phenyl]propane, and hydroquinone , a bifunctional polyol monomer such as resorcin (corresponding to (B32) bifunctional active hydrogen-containing compound constituting the (B12) urethane prepolymer).

Polyfunctional polyol monomers such as trihydroxynaphthalene, tetrahydroxynaphthalene, benzenetriol, biphenyltetraol, pyrogallol, (hydroxynaphthyl)pyrogallol, and trihydroxyphenanthrene.

Polyester Polyol; Component (B3) Examples include compounds obtained by a condensation reaction between a polyol and a polybasic acid. Among them, the number average molecular weight is preferably from 400 to 2,000, more preferably from 500 to 1,500, and most preferably from 600 to 1,200. Those having hydroxyl groups (two in the molecule) only at both ends of the molecule correspond to (B32) the bifunctional active hydrogen-containing compound constituting the (B12) urethane prepolymer.

Polyether Polyol; Component (B3) Examples include compounds obtained by ring-opening polymerization of alkylene oxide, or reaction of a compound having two or more active hydrogen-containing groups in the molecule with alkylene oxide, and modified products thereof. Among them, the number average molecular weight is preferably from 400 to 2,000, more preferably from 500 to 1,500, and most preferably from 600 to 1,200. Those having hydroxyl groups (two in the molecule) only at both ends of the molecule correspond to (B32) the bifunctional active hydrogen-containing compound constituting the (B12) urethane prepolymer.

Polycaprolactone Polyol; Component (B3) Examples include compounds obtained by ring-opening polymerization of ε-caprolactone. Among them, the number average molecular weight is preferably from 400 to 2,000, more preferably from 500 to 1,500, and most preferably from 600 to 1,200. Those having hydroxyl groups (two in the molecule) only at both ends of the molecule correspond to (B32) the bifunctional active hydrogen-containing compound constituting the (B12) urethane prepolymer.

Polycarbonate Polyol; Component (B3) Examples include compounds obtained by phosgenation of one or more low-molecular-weight polyols or compounds obtained by transesterification using ethylene carbonate, diethyl carbonate, diphenyl carbonate, or the like. Among them, the number average molecular weight is preferably from 400 to 2,000, more preferably from 500 to 1,500, and most preferably from 600 to 1,200. Those having hydroxyl groups (two in the molecule) only at both ends of the molecule correspond to (B32) the bifunctional active hydrogen-containing compound constituting the (B12) urethane prepolymer.

Polyacrylic Polyol; Component (B3) Examples include polyol compounds obtained by polymerizing (meth)acrylate acid esters and vinyl monomers. Those having hydroxyl groups (two in the molecule) only at both ends of the molecule correspond to (B32) the bifunctional active hydrogen-containing compound constituting the (B12) urethane prepolymer.

Thiol; Component (B3) Preferred specific examples of the thiol include those described in International Publication No. WO2015/068798 pamphlet. Among them, the following are particularly preferred examples.

Tetraethylene glycol bis(3-mercaptopropionate), 1,4-butanediol bis(3-mercaptopropionate), 1,6-hexanediol bis(3-mercaptopropionate), 1,4- Bis(mercaptopropylthiomethyl)benzene (corresponding to the (B32) bifunctional active hydrogen-containing compound constituting the (B12) urethane prepolymer).

trimethylolpropane tris (3-mercaptopropionate), pentaerythritol tetrakis (3-mercaptopropionate), dipentaerythritol hexakis (3-mercaptopropionate), 1,2-bis [( 2-mercaptoethyl)thio]-3-mercaptopropane, 2,2-bis(mercaptomethyl)-1,4-butanedithiol, 2,5-bis(mercaptomethyl)-1,4-dithiane, 4-mercaptomethyl -1,8-dimercapto-3,6-dithiaoctane, 1,1,1,1-tetrakis(mercaptomethyl)methane, 1,1,3,3-tetrakis(mercaptomethylthio)propane, 1,1,2,2 - Thiol monomers such as tetrakis(mercaptomethylthio)ethane, 4,6-bis(mercaptomethylthio)-1,3-dithiane, tris-{(3-mercaptopropionyloxy)ethyl}-isocyanurate.

OH/SH type polymerizable group-containing monomer; (B3) component 2-mercaptoethanol, 1-hydroxy-4-mercaptocyclohexane, 2-mercaptohydroquinone, 4-mercaptophenol, 1-hydroxyethylthio-3-mercaptoethylthiobenzene , 4-hydroxy-4'-mercaptodiphenyl sulfone, 2-(2-mercaptoethylthio) ethanol, dihydroxyethyl sulfide mono(3-mercaptopropionate), dimercaptoethane mono(salcylate) (above (B12) urethane pre It corresponds to the (B32) bifunctional active hydrogen-containing compound that constitutes the polymer).
3-mercapto-1,2-propanediol, glycerindi (mercaptoacetate), 2,4-dimercaptophenol, 1,3-dimercapto-2-propanol, 2,3-dimercapto-1-propanol, 1,2-dimercapto -1,3-butanediol, pentaerythritol tris (3-mercaptopropionate), pentaerythritol mono (3-mercaptopropionate), pentaerythritol bis (3-mercaptopropionate), pentaerythritol tris (thioglyco poly(thiol) monomers such as pentaerythritol pentakis(3-mercaptopropionate), hydroxymethyl-tris(mercaptoethylthiomethyl)methane, hydroxyethylthiomethyltris(mercaptoethylthio)methane.

(B4) amino group-containing monomer; (B4) component (B4) amino group-containing monomer is a monomer having one or more primary or secondary amino groups in one molecule. They are classified into aliphatic amines, alicyclic amines, and aromatic amines, and specific examples thereof include the following monomers.

Aliphatic Amine; Component (B4) Polyamines such as ethylenediamine, hexamethylenediamine, nonamethylenediamine, undecanemethylenediamine, dodecamethylenediamine, metaxylenediamine, 1,3-propanediamine, putrescine and diethylenetriamine.

monofunctional amines such as monoethylamine, n-propylamine, diethylamine, di-n-propylamine, n-propylamine, di-n-butylamine and n-butylamine;

Alicyclic amine; component (B4) Polyamines such as isophoronediamine and cyclohexyldiamine.

monofunctional amines such as cyclohexylamine and N-methylcyclohexylamine;

Aromatic amine; (B4) component 4,4'-methylenebis(o-chloroaniline) (MOCA), 2,6-dichloro-p-phenylenediamine, 4,4'-methylenebis(2,3-dichloroaniline), 4,4′-methylenebis(2-ethyl-6-methylaniline), 3,5-bis(methylthio)-2,4-toluenediamine, 3,5-bis(methylthio)-2,6-toluenediamine, 3 ,5-diethyltoluene-2,4-diamine, 3,5-diethyltoluene-2,6-diamine, trimethylene glycol-di-p-aminobenzoate, polytetramethylene glycol-di-p-aminobenzoate, 4, 4'-diamino-3,3',5,5'-tetraethyldiphenylmethane, 4,4'-diamino-3,3'-diisopropyl-5,5'-dimethyldiphenylmethane, 4,4'-diamino-3,3 ',5,5'-tetraisopropyldiphenylmethane, 1,2-bis(2-aminophenylthio)ethane, 4,4'-diamino-3,3'-diethyl-5,5'-dimethyldiphenylmethane, N,N '-di-sec-butyl-4,4'-diaminodiphenylmethane, 3,3'-diethyl-4,4'-diaminodiphenylmethane, m-xylylenediamine, N,N'-di-sec-butyl-p- Phenylenediamine, m-phenylenediamine, p-xylylenediamine, p-phenylenediamine, 3,3′-methylenebis(methyl-6-aminobenzoate), 2,4-diamino-4-chlorobenzoate-2-methylpropyl , 2,4-diamino-4-chlorobenzoate-isopropyl, 2,4-diamino-4-chlorophenylacetate-isopropyl, terephthalate-di-(2-aminophenyl)thioethyl, diphenylmethanediamine, tolylenediamine, piperazine, polyamines such as 1,3,5-benzenetriamine and melamine;

monofunctional amines such as benzylamine and dibenzylamine;

Among these (B4) components, the diamine compound can also be regarded as (B32) a bifunctional active hydrogen-containing compound having two active hydrogen-containing groups in the molecule.

<Polymerization Method/Sequential Addition Reaction> Polymerizable Monomer Composition Suitable Blending Ratio Polymerizable Monomer Composition Containing Component (B1), Component (B2), Component (B3), and Component (B4) In the present invention, ( In the case of a curable composition containing component B1), component (B2), component (B3), and component (B4), the following formulation is preferred. That is, when the polymerizable functional group in the rotaxane monomer (A) is not a radically polymerizable group, but is polymerized and cured by a sequential addition reaction (polycondensation/polyaddition reaction) to produce a cured product, the following mixing ratio and preferably. When the polymerizable functional group of component (A) is an active hydrogen-containing group, component (B1) is essential.

Specifically, the total amount of the (B1) component, (B2) component, (B3) component, and (B4) component (hereinafter sometimes simply referred to as "(B) composition amount". This is (B ) is equal to the amount of the polymerizable monomer composition.) and component (A) must be in the following proportions. When the component (A) is 100 parts by mass, the amount of the composition (B) must be 100 to 100,000 parts by mass. By including the polymerizable monomer composition (B) in the above amount, excellent mechanical properties, polishing properties, abrasion resistance, and photochromic properties are exhibited. (B) If the amount of the composition is less than 100 parts by mass, the amount of the polyrotaxane monomer exhibiting the sliding effect relatively increases, resulting in poor mechanical properties, which is not preferred. On the other hand, when the amount of the composition (B) exceeds 100,000 parts by mass, the amount of the polyrotaxane monomer exhibiting the sliding effect is relatively decreased, resulting in inferior wear resistance and photochromic properties, which is not preferable.

In addition, the rotaxane monomer (A) containing a photochromic site is subjected to a sequential addition reaction, and a photochromic compound having the same performance as the site (having the same absorption peak and the like and developing the same color) is not blended. In addition, when producing a photochromic cured product, it is particularly preferable to use the following compounding amounts. That is, in this case, in order to exhibit excellent photochromic properties in addition to the above performance, it is preferable that the amount of the composition (B) is 100 to 80000 parts by mass when the component (A) is 100 parts by mass. Furthermore, it is preferable that the amount of the composition (B) is 500 to 50,000 parts by mass. In this case, it is possible to use single photochromic compounds having different performances for color matching.

On the other hand, when the cured product is produced using the (A) rotaxane monomer that does not contain a photochromic site, the following blending ratio is preferred. That is, in this case, when obtaining a cured product by sequential addition reaction, considering the handling property of the polymerizable monomer composition in addition to the above characteristics, when the component (A) is 100 parts by mass, ( B) The amount of the composition is preferably 100 to 5000 parts by mass, more preferably 200 to 3000 parts by mass. This cured product can be used as a polishing pad material. Furthermore, a photochromic compound alone can be blended and used as a photochromic cured product.

Furthermore, the (A) rotaxane monomer containing a photochromic site and the (A) rotaxane monomer not containing a photochromic site can be used in combination. All of these rotaxane monomers have an average inclusion number of the cyclic molecule in the range of 0.05 to 0.20 and have a polymerizable functional group. In this case, when the component (A) is 100 parts by mass (the sum of the (A) rotaxane monomer containing the photochromic site and the (A) rotaxane monomer not containing the photochromic site), the amount of the (B) composition is 100 to It must be 100,000 parts by mass. Furthermore, it is preferable that the amount of the composition (B) is 500 to 5000 parts by mass.

In order to obtain a more excellent cured product, it is preferable to configure the polymerizable monomer composition (B) as follows, among the above blending ratios. Specifically, when the total amount of component (B) is 100% by mass, 0 to 95% by mass of component (B1), 0 to 100% by mass of component (B2), 0 to 80% by mass of component (B3), and (B4) is preferably 0 to 30% by mass in order to develop excellent mechanical properties. In order to exhibit this effect more, 20 to 95% by mass of component (B1), 0 to 20% by mass of component (B2), 0 to 70% by mass of component (B3), and 0 to 25% by mass of component (B4) It is more preferable that the (B1) component is 25 to 85% by mass, the (B2) component is 0 to 5% by mass, the (B3) component is 15 to 70% by mass, and the (B4) component is 0 to 20% by mass. is particularly preferred.

In addition, when the obtained cured product is used for a CMP polishing pad, the components (B1) of 40 to 85% by mass, (B2) of 0 to 5% by mass, (B3) of 0 to 35% by mass, and ( It is preferable that the B4) component is 0 to 20% by mass. Further, when used for optical articles such as spectacle lenses, (B1) component 25 to 65% by mass, (B2) component 0 to 5% by mass, (B3) component 35 to 70% by mass, and (B4) ) component is preferably 0 to 15% by mass.

<(B) Polymerizable Monomer Composition>
<Polymerization method/chain polymerization (radical polymerization) reaction> polymerizable monomer <(B5) Radically polymerizable monomer>
(B5) The radically polymerizable monomer (hereinafter sometimes simply referred to as component (B5)) is not particularly limited as long as it has a radically polymerizable group. In this case, the polymerizable functional group contained in the (A) rotaxane monomer is a radically polymerizable group. And (B) the polymerizable monomer composition contains a polymerizable monomer having a radically polymerizable group.

Radically polymerizable monomers can be roughly classified into (meth)acrylate compounds having a (meth)acrylate group, vinyl compounds having a vinyl group, and allyl compounds having an allyl group.

Preferred specific examples of the radically polymerizable monomer (B5) include those described in International Publication No. WO2015/068798. Furthermore, among these, the compounds shown below can be particularly preferably used as examples of radically polymerizable compounds that can be more preferably used in the present invention.

(B51); (meth)acrylate compound (B51) (meth)acrylate compound (hereinafter sometimes simply referred to as "(B51) component") is represented by, for example, the following formulas (1) to (4) compound.

(B511) a monomer represented by formula (1); ((B51) component)

In the formula, R ¹ is a hydrogen atom or a methyl group, R ² is a hydrogen atom or an alkyl group having 1 to 2 carbon atoms, and R ³ is a trivalent to hexavalent organic compound having 1 to 10 carbon atoms. is a group, a is a number of 0 to 3 on average, and b is a number of 3 to 6. A methyl group is preferable as the C 1-2 alkyl group represented by R ² . Examples of the organic group represented by R ³ include groups derived from polyols, trivalent to hexavalent hydrocarbon groups, and trivalent to hexavalent organic groups containing urethane bonds.

Examples of suitable compounds in the above formula (1) include:
trimethylolpropane trimethacrylate, ditrimethylolpropane tetramethacrylate, and the like.

(B512) component; compound represented by formula (2) (B51) component

^In the formula, ^R4 and R5 are each hydrogen atoms or methyl groups, and c and d are each integers of 0 or more.

However, when both R ⁴ and R ⁵ are methyl groups, c + d is an average value of 2 or more and less than 7, and when R ⁴ is a methyl group and R ⁵ is a hydrogen atom, c + d is an average value of 2 is at least 5, and when both R ⁴ and R ⁵ are hydrogen atoms, c+d is at least 2 and less than 3 on average.

Examples of the most suitable compounds in the above formula (2) are:
tripropylene glycol dimethacrylate, tetrapropylene glycol dimethacrylate, and the like.

(B513) component; compound represented by formula (3) (B51) component

wherein ^R6 and ^R7 are each a hydrogen atom or a methyl group; ^R8 and ^R9 are each a hydrogen atom or a methyl group ^; R10 is a hydrogen atom or a halogen atom; is —O—, —S—, —(SO ₂ )—, —CO—, —CH ₂ —, —CH═CH—, —C(CH ₃ )2—, —C(CH ₃ )(C ₆ H ₅ )−, e and f are each an integer of 1 or more, and e+f is an average value of 2 or more and 30 or less.

The polymerizable monomer represented by the above formula (3) is usually obtained in the form of a mixture of molecules with different molecular weights. Therefore, e and f are shown as average values.

Examples of suitable monomers in the above formula (3) include:
bisphenol A dimethacrylate, 2,2-bis(4-methacryloyloxy(polyethoxy)phenyl]propane (f+g=2.6), 2,2-bis[4-methacryloxy(polyethoxy)phenyl]propane (a+b=10), 2,2-bis[4-methacryloxy(polyethoxy)phenyl]propane (a+b=17), 2,2-bis[4-methacryloxy(polyethoxy)phenyl]propane (a+b=30) 2,2-bis(3,5 -dibromo-4-methacryloyloxyethoxyphenyl)propane, 2,2-bis(4-methacryloyloxydipropoxyphenyl)propane, bisphenol A diacrylate, 2,2-bis[4-acryloxy(polyethoxy)phenyl]propane (a+b) =10), 2,2-bis[4-acryloxy(polyethoxy)phenyl]propane (a+b=20), and the like.

(B514) component; compound represented by formula (4) (B51) component

In the formula, g is a number of 1 to 20 on average, A and A' may be the same or different, and each is a linear or branched alkylene group having 2 to 15 carbon atoms, When there are a plurality of A's, the plurality of A's may be the same group or different groups, R ¹¹ is a hydrogen atom or a methyl group, R ¹² is (meth)acryloyl It is an oxy group or a hydroxyl group.

The compound represented by the above formula (4) can be produced by reacting a polycarbonate diol with (meth)acrylate acid.

The most preferable form of the above formula (4) is obtained by reacting a polycarbonate diol having a number average molecular weight of 500, which is a mixture of pentamethylene glycol and hexamethylene glycol, with acrylic acid, and R ¹² is an acryloyloxy group monomer. is mentioned.

Component (B515); Silserquioxane Monomer; Component (B51) Silserquioxane monomers have various molecular structures such as cage-like, ladder-like, and random, and have radically polymerizable monomers such as (meth)acrylate groups. Those having a group are preferred.

Examples of such silselquioxane compounds include those represented by the following formula (5).

In the formula, h is the degree of polymerization and is an integer of 3 to 100, and a plurality of R13 may be the same or different, and may be a radically polymerizable group, an organic group containing a radically polymerizable group, or a hydrogen atom. , an alkyl group, a cycloalkyl group, an alkoxy group or a phenyl group, and at least one R ¹³ is a radically polymerizable group or an organic group containing a radically polymerizable group.

Here, the radically polymerizable group represented by R ¹³ or the organic group containing the radically polymerizable group includes (meth)acrylate group; (meth)acryloyloxypropyl group, (3-(meth)acryloyloxypropyl)dimethyl Examples thereof include organic groups having (meth)acrylate groups such as siloxy groups.

(B516) component; other (meth)acrylate compounds (B51) component Examples of monomers other than the compounds represented by the above formulas (1) to (4) include:
Methoxy polyethylene glycol methacrylate (especially average molecular weight 293), methoxy polyethylene glycol methacrylate (especially average molecular weight 468), methoxy polyethylene glycol acrylate (especially average molecular weight 218), methoxy polyethylene glycol acrylate (especially average molecular weight 454), diethylene glycol dimethacrylate, tri Ethylene glycol dimethacrylate, tetraethylene glycol dimethacrylate, pentaethylene glycol dimethacrylate, pentapropylene glycol dimethacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, tetraethylene glycol diacrylate, pentaethylene glycol diacrylate, tripropylene glycol diacrylate , tetrapropylene glycol diacrylate, pentapropylene glycol diacrylate, a dimethacrylate consisting of a mixture of polypropylene glycol and polyethylene glycol (having two repeating units of polyethylene and two polypropylene), polyethylene glycol dimethacrylate (especially an average molecular weight of 330 ), polyethylene glycol dimethacrylate (especially average molecular weight 536), polytetramethylene glycol dimethacrylate (especially average molecular weight 736), tripropylene glycol dimethacrylate, tetrapropylene glycol dimethacrylate, polypropylene glycol dimethacrylate (especially average molecular weight 536), polyethylene Glycol diacrylate (especially average molecular weight 258), polyethylene glycol diacrylate (especially average molecular weight 308), polyethylene glycol diacrylate (especially average molecular weight 508), polyethylene glycol diacrylate (especially average molecular weight 708), polyethylene glycol methacrylate acrylate (especially average molecular weight 536), (polyethylene glycol/polypropylene glycol) diacrylate copolymer (especially average molecular weight 330), ethoxylated cyclohexanedimethanol acrylate (especially average molecular weight 434), polyester oligomer hexaacrylate, caprolactone-modified dipentaerythritol hexaacrylate, 4 Functional polyester oligomer (molecular weight 2500-3500, Daicel UCB, EB80, etc.), tetrafunctional polyester oligomer (molecular weight 6000-8 000, Daicel UCB, EB450, etc.), hexafunctional polyester oligomer (molecular weight 45,000 to 55,000, Daicel UCB, EB1830, etc.), tetrafunctional polyester oligomer (especially molecular weight 10,000, Daiichi Kogyo Seiyaku Co., GX8488B, etc.), ethylene Glycol bisglycidyl methacrylate, 1,4-butylene glycol dimethacrylate, 1,9-nonylene glycol dimethacrylate, neopentylene glycol dimethacrylate, bis(2-methacryloyloxyethylthioethyl) sulfide, bis(methacryloyloxyethyl) sulfide , bis (acryloyloxyethyl) sulfide, 1,2-bis (methacryloyloxyethylthio) ethane, 1,2-bis (acryloyloxyethyl) ethane, bis (2-methacryloyloxyethylthioethyl) sulfide, bis (2- acryloyloxyethylthioethyl) sulfide, 1,2-bis(methacryloyloxyethylthioethylthio)ethane, 1,2-bis(acryloyloxyethylthioethylthio)ethane, 1,2-bis(methacryloyloxyisopropylthioisopropyl) Sulfide, 1,2-bis(acryloyloxyisopropylthioisopropyl)sulfide, stearyl methacrylate, lauryl methacrylate, methyl acrylate, ethyl acrylate, butyl acrylate, octyl acrylate, lauryl acrylate.

Esters of (meth)acrylate acids such as methyl (meth)acrylate, benzyl (meth)acrylate, phenyl (meth)acrylate, 2-hydroxyethyl (meth)acrylate.

Esters of thioacrylic acid or thiomethacrylic acid, eg methylthioacrylate, benzylthioacrylate, benzylthiomethacrylate.

Polyfunctional urethane (meth) acrylates, for example, Shin-Nakamura Chemical Co., Ltd. U-4HA (molecular weight 596, functional group number 4), U-6HA (molecular weight 1019, functional group number 6), U-6LPA (molecular weight 818 , functional group number 6), U-15HA (molecular weight 2300, functional group number 15), Shin Nakamura Chemical Co., Ltd. U-2PPA (molecular weight 482), UA-122P (molecular weight 1100), U-122P (molecular weight 1100) , and Daicel UCB Co., Ltd. EB4858 (molecular weight 454), Shin-Nakamura Chemical Co., Ltd. U-108A, U-200PA, UA-511, U-412A, UA-4100, UA-4200, UA-4400 , UA-2235PE, UA-160TM, UA-6100, UA-6200, U-108, UA-4000, UA-512 and Nippon Kayaku Co., Ltd. UX-2201, UX3204, UX4101, 6101, 7101, 8101 mentioned.

(B52) Component; Vinyl Compound Examples of the vinyl compound include styrene, α-methylstyrene and α-methylstyrene dimer. Further, in the above silsesquioxane monomers, compounds in which R ¹³ is a vinyl group; organic groups having a vinyl group such as a vinylpropyl group and a vinyldimethylsiloxy group can be mentioned.

(B53) Component: Allyl compound Examples of allyl compounds include methoxypolyethylene glycol allyl ether (especially average molecular weight of 550), methoxypolyethylene glycol allyl ether (especially average molecular weight of 350), methoxypolyethylene glycol allyl ether (especially average molecular weight of 1500), and the like. be done. Examples of the silsesquioxane monomer include compounds in which R ¹³ is an allyl group; an allyl group-containing organic group such as an allylpropyl group or an allylpropyldimethylsiloxy group.

(B54) Other Radical Polymerizable Monomers In the present invention, composite polymerizable compounds having different types of polymerizable groups in the molecule can also be used. Specific examples of compounds include the following. Here, any compound having at least one radically polymerizable group in its molecule falls under this category.

Radical polymerization/epoxy-type polymerizable group-containing monomer; (B54) component glycidyl methacrylate, glycidyloxymethyl methacrylate, 2-glycidyloxyethyl methacrylate, 3-glycidyloxypropyl methacrylate, 4-glycidyloxybutyl methacrylate, polyethylene glycol glycidyl methacrylate, polypropylene glycol glycidyl methacrylate, bisphenol A-monoglycidyl ether-methacrylate, polyethylene glycol glycidyl acrylate, polyethylene glycol glycidyl acrylate.

Radical polymerization/OH-type polymerizable group-containing monomer; (B54) component 2-hydroxymethacrylate, 2-hydroxyacrylate, 2-hydroxypropyl acrylate, and the like.

Radical Polymerization/Isocyanate Group-Containing Monomer; Component (B54) Examples include 2-isocyanatoethyl methacrylate and 2-isocyanatoethyl acrylate.

Radical polymerization/silyl group-containing monomer; component (B54) γ-methacryloyloxypropyltrimethoxysilane, γ-methacryloyloxypropylmethyldimethoxysilane and the like.

In addition to the polymerizable monomers described above, other polymerizable monomers can be used without any limitation. For example, episulfide monomers, thietanyl monomers, and mono(thio)ol monomers can also be used. Preferred specific examples of episulfide monomers, thietanyl monomers, and mono(thiol) monomers include those described in International Publication No. WO2015/068798.

Curable Composition Containing Component (B5) In the present invention, in the case of a curable composition containing component (B5), that is, when the polymerizable functional group in (A) the rotaxane monomer is a radically polymerizable group, The following mixing ratios must be used.

That is, as in the case of sequential addition reactions,
(A) per 100 parts by mass of the rotaxane monomer,
(B) The polymerizable monomer composition should be 100 to 100,000 parts by mass.

By including the other (B) polymerizable monomer composition in the above amount, excellent mechanical properties, polishing properties, abrasion resistance, and photochromic properties are exhibited. If the total amount of component (B) is less than 100 parts by mass, the amount of the polyrotaxane monomer exhibiting the sliding effect relatively increases, resulting in poor mechanical properties, which is undesirable. On the other hand, if the total amount of the component (B) exceeds 10,000 parts by mass, the amount of the polyrotaxane monomer that exhibits the sliding effect is relatively decreased, resulting in poor abrasion resistance and photochromic properties, which is undesirable.

In addition, photochromic curing is performed by chain polymerization of (A) a rotaxane monomer containing a photochromic site without blending a photochromic compound having the same performance as the site (having the same absorption peak and the like and developing the same color). When producing a body, it is particularly preferable to use the following blending amounts. That is, in this case, in order to exhibit excellent photochromic properties in addition to the above performance, it is preferable that the amount of the composition (B) is 100 to 80000 parts by mass when the component (A) is 100 parts by mass. Furthermore, it is preferable that the amount of the composition (B) is 500 to 50,000 parts by mass. In this case, it is possible to use single photochromic compounds having different performances for color matching.

On the other hand, when the cured product is produced using the (A) rotaxane monomer that does not contain a photochromic site, the following blending ratio is preferred. That is, in this case, when obtaining a cured product by sequential addition reaction, considering the handling property of the polymerizable monomer composition in addition to the above characteristics, when the component (A) is 100 parts by mass, ( B) The amount of the composition is preferably 100 to 5000 parts by mass, more preferably 200 to 3000 parts by mass. By blending in this way, the resulting cured product can be effectively used for spectacle lenses and the like. Furthermore, a photochromic compound alone can be blended and used as a photochromic cured product.

Furthermore, the (A) rotaxane monomer containing a photochromic site and the (A) rotaxane monomer not containing a photochromic site can be used in combination. All of these rotaxane monomers have an average inclusion number of the cyclic molecule in the range of 0.05 to 0.20 and have a polymerizable functional group. In this case, when the component (A) is 100 parts by mass (the sum of the (A) rotaxane monomer containing the photochromic site and the (A) rotaxane monomer not containing the photochromic site), the amount of the (B) composition is 100 to It must be 100,000 parts by mass. Furthermore, it is preferable that the amount of the composition (B) is 500 to 5000 parts by mass.

Among the above blending ratios, in order to obtain a more excellent cured product, further, when the total amount of the component (B5) is 100% by mass, the component (B51) is 77 to 99% by mass, (B52 ) component 0 to 15% by mass, (B53) component 0 to 5% by mass, and (B54) component 1 to 3% by mass are preferred for moldability of the cured product. In order to exhibit this effect more, 85 to 99% by mass of component (B51), 0 to 10% by mass of component (B52), 0 to 3% by mass of component (B53), and 1 to 2% by mass of component (B54) It is more preferable that

Furthermore, when the above range is satisfied, when the total amount of the (B51) component is 100% by mass, the (B511) component is 5 to 50% by mass, the (B512) component is 0 to 60% by mass, and the (B513) component is 0 to 70% by weight, 0 to 20% by weight of component (B514), 0 to 20% by weight of component (B515), and 10 to 70% by weight of component (B516) are preferred for excellent photochromic properties. In order to exhibit this effect more, (B511) component 7 to 40% by mass, (B512) component 0 to 50% by mass, (B513) component 0 to 60% by mass, (B514) component 0 to 15% by mass, More preferably, the component (B515) is 0 to 10% by mass and the component (B516) is 15 to 60% by mass.

About Suitable Curable Composition The (A) polyrotaxane monomer and the polymerizable monomer other than the polyrotaxane may be appropriately selected according to the intended use. For example, when preparing a photochromic curable composition, the polymerizable functional group of the (A) polyrotaxane monomer is preferably selected from OH group, SH group, or radically polymerizable group, and the polymerizable monomer is , (B1) an iso(thio)anonate compound, (B5) a radically polymerizable monomer, and the like. Further, when the polymerizable functional group of (A) polyrotaxane monomer is OH group or SH group, (B3) (thio)ol compound can be used in combination with (B1) iso(thia)cyanate compound. preferable. By doing so, excellent mechanical properties and photochromic properties can be exhibited. Among the above, particularly high effects can be obtained in the present invention when (B1) an iso(thia)cyanate compound is used as the polymerizable monomer.

When used in a polishing pad material, the polymerizable functional group of (A) the polyrotaxane monomer is preferably selected from OH groups, and the polymerizable monomer is selected from (B1) poly(iso)thiacyanate monomers. is preferred. In particular, when used as a polishing pad material, (B1) the iso(thio)cyanate compound preferably contains (B12) a urethane prepolymer. By doing so, the mechanical properties of the polishing pad material can be improved, and particularly good wear resistance properties can be exhibited.

(Other compounding components to be compounded in the curable composition)
In the curable composition of the present invention, depending on the type of the polymerizable functional group introduced into the above-described (A) polyrotaxane monomer and (B) polymerizable monomer, various (C) a polymerization curing accelerator can also be used.

(C) Polymerization curing accelerator For example, when the polymerizable functional group possessed by the (A) polyrotaxane monomer is a polymerizable group such as an OH group, an amino group, an epoxy group, and an SH group, the polymerizable monomer is selected from (B1) an iso(thio)cyanate compound, (C1) a reaction catalyst for urethane or urea or (C2) a condensation agent is used as a polymerization curing accelerator.

(A) The polymerizable functional group possessed by the rotaxane monomer is an OH group, an amino group, and a polymerizable functional group such as an NCO group, and (B) the composition contains (B2) an epoxy group-containing monomer. In some cases, (C3) an epoxy curing agent or (C4) a cationic polymerization catalyst for ring-opening polymerization of an epoxy group is used as a polymerization curing accelerator.

(A) The polymerizable functional group possessed by the polyrotaxane monomer is an NCO group or an NCS group, and the component (B) consists of (B3) a hydroxyl group (thiol group)-containing monomer and (B4) an amine monomer. If selected, (C1) a reaction catalyst for urethane or urea and (C2) a condensing agent are used as polymerization curing accelerators.

(A) When the polymerizable functional group possessed by the rotaxane monomer is a radically polymerizable group, and (B) when the component is selected from (B5) radically polymerizable monomers, (C5) initiates radical polymerization agents are used as polymerization curing accelerators.

Specific examples of the polymerization accelerators (C1) to (C5) that can be suitably used in the present invention include those described in International Publication No. WO2015/068798.

Each of these various (C) polymerization curing accelerators can be used alone or in combination of two or more. The amount used may be a so-called catalytic amount. B) A small amount in the range of 0.001 to 10 parts by weight, especially 0.01 to 5 parts by weight, per 100 parts by weight of the total polymerizable monomer composition.

(D) Photochromic Compound In addition, the cured body obtained by curing the curable composition of the present invention may contain (D) a photochromic compound in the cured body depending on its use. Photochromic spectacles obtained by curing a photochromic curable composition are known as such uses. Known photochromic compounds can be used as the above-mentioned photochromic compound, but when used as a photochromic composition, indeno [2, It is more preferable to use a chromene compound having a 1-f]naphtho[1,2-b]pyran skeleton, and a chromene compound having a molecular weight of 540 or more is particularly preferable because it is particularly excellent in color density and fading speed.

These various (D) photochromic compounds can be used either singly or in combination of two or more. The amount to be used may be appropriately determined according to the application, for example, 0.001 to 20 parts by mass, particularly 0.01 to 20 parts by mass, per 100 parts by mass of (A) the polyrotaxane and (B) the polymerizable monomer composition. It is preferably in the range of 10 parts by mass.

In addition, the curable composition of the present invention can contain various known compounding agents within a range that does not impair the effects of the present invention. For example, abrasive grains, antioxidants, ultraviolet absorbers, infrared absorbers, anti-coloring agents, fluorescent dyes, dyes, pigments, perfumes, surfactants, flame retardants, plasticizers, fillers, antistatic agents, foam stabilizers , solvents, leveling agents and other additives may be added. These additives may be used alone or in combination of two or more. These additives can be incorporated into the cured product by incorporating them into the curable composition and polymerizing the curable composition. Specifically, the abrasive grains described above are particles made of a material selected from cerium oxide, silicon oxide, alumina, silicon carbide, zirconia, iron oxide, manganese dioxide, titanium oxide and diamond, or two particles made of these materials. Seed or more particles and the like.

A known method can be adopted for the polymerization method. In the case of polycondensation or polyaddition reaction, the conditions described in International Publication No. WO2015/068798, International Publication No. WO2016/143910, and JP-A-2017-48305 can be employed. In the case of radical polymerization, the conditions described in WO2014/136804 and International Publication No. WO2015/068798 can be adopted.

<Hardened body>
<Photochromic hardened body>
When the curable composition contains (D) a photochromic compound, a photochromic cured product can be produced by directly polymerizing and curing the curable composition.

Further, as a method for obtaining a photochromic cured product, a curable composition containing the (A) rotaxane monomer having photochromic properties is prepared by directly bonding the photochromic site to the side chain of the cyclic molecule of the (A) rotaxane monomer. can also

The following means are used to cure the photochromic composition of the present invention.

A method of directly molding an optical material such as a lens by dissolving a photochromic compound in a polymerizable monomer and polymerizing it (kneading method).

A method of providing a resin layer in which a photochromic compound is dispersed on the surface of a plastic molded product such as a lens by coating or cast polymerization (lamination method).

A method of bonding two optical sheets with an adhesive layer formed of an adhesive resin in which a photochromic compound is dispersed (binder method).

<Other cured products>
In addition, the cured body obtained by curing the curable composition of the present invention may be provided with pores in the cured body depending on its use. A pad agent for polishing is known as such a use. As a technique for providing fine pores in a polishing pad agent or the like, a well-known foaming method or the like can be used without any limitation. Examples of these methods include a method of dispersing and hardening a volatile blowing agent such as a low boiling point hydrocarbon or micro hollow bodies (microballoons), and a method of mixing thermally expandable fine particles and then heating to foam the fine particles. Alternatively, a mechanical froth foaming method in which inert gas such as air or nitrogen is blown during mixing can be exemplified. When using a curable composition capable of forming a urethane bond in the curable body of the present invention, a foaming method using a foaming agent to add water or the like can also be applied. In addition, as the micro hollow bodies (microballoons), those known in the world can be used without any limitation. To give specific examples, hollow microscopic bodies such as vinylidene chloride resins, (meth)acrylate resins, acrylonitrile and vinylidene chloride copolymers, epoxy resins, phenol resins, melamine resins and urethane resins can be used.

EXAMPLES Next, the present invention will be described in detail using Examples and Comparative Examples, but the present invention is not limited to these Examples. First, the measuring apparatus, measuring method, manufacturing method of each component, and the like used in the present invention will be described.

(Molecular weight measurement; gel permeation chromatography (GPC measurement))
For GPC measurement, a liquid chromatograph (manufactured by Nippon Waters Co., Ltd.) was used as an apparatus. Depending on the molecular weight of the sample to be analyzed, the columns are Shodex GPC KF-802 (exclusion limit molecular weight: 5000), KF802.5 (exclusion limit molecular weight: 20000), KF-803 (exclusion limit molecular weight: 70000) manufactured by Showa Denko Co., Ltd. , KF-804 (exclusion limit molecular weight: 400,000) and KF-805 (exclusion limit molecular weight: 2,000,000) were used as appropriate. In addition, dimethylformamide (DMF) was used as a developing solution, and the measurement was performed under conditions of a flow rate of 1 ml/min and a temperature of 40°C. Using polystyrene as a standard sample, the weight average molecular weight was determined by comparative conversion. A differential refractometer was used as a detector.

Measurement of Hydroxyl Value The hydroxyl value was determined using the acetylation method in accordance with JIS K1557-1 (2007).

(A) Method for producing rotaxane monomer <Production Example 1>
(1-1) Preparation of PEG2000diamine;
A linear polyethylene glycol (PEG2000) was prepared as an axis molecule.
the following prescriptions;
PEG2000 300g,
200 g of CDI (N,N-carbonyldiimidazole)
was prepared, each component was dissolved in 1000 mL of dichloromethane, and stirred at room temperature for 6 hours. After the organic phase was washed with water, 180 g of ethylenediamine was added and the mixture was further stirred at room temperature for 20 hours. After washing with water, dichloromethane was distilled off under reduced pressure to obtain PEG2000diamine (PEG2000 diamine (terminal amino group)) represented by the following formula xx (285 g, yield 88%).

(1-2) preparation of rotaxane;
20 g of PEG2000 diamine prepared above and 250 g of hydroxypropyl-α-cyclodextrin (HP-α-CD) were dissolved in 300 mL of deionized water. After allowing to stand at 4° C. for 2 days, 35.1 g of sodium trinitrobenzenesulfonate (TNBS) was added, and after stirring for 2 more days, hydroxypropylated polyrotaxane was obtained by dialysis with a dialysis tube (10.8 g). , 18% yield). The obtained hydroxypropylated polyrotaxane was identified by ¹ H-NMR and GPC, and confirmed to be a hydroxypropylated polyrotaxane having the desired structure. The degree of modification of the OH group of the cyclic molecule with the hydroxypropyl group was 0.2, and the weight average molecular weight was 6,000 by GPC measurement.

(1-3) Introduction of side chains to rotaxane;
3 g of the hydroxypropylated polyrotaxane obtained above was added to 12 g of ε-caprolactone and dissolved at 80° C. to prepare a mixed solution. This mixture was stirred at 110° C. for 1 hour while blowing dry nitrogen, then 0.6 g of a 50 wt % xylene solution of tin(II) 2-ethylhexanoate was added, and the mixture was stirred at 100° C. for 1 hour. After that, xylene was added to obtain a polycaprolactone-modified polyrotaxane-xylene solution with a non-volatile concentration of about 35% by mass into which side chains were introduced. The resulting polycaprolactone-modified polyrotaxane xylene solution was dropped into hexane, recovered, and dried to obtain 15 g of polycaprolactone-modified polyrotaxane (rotaxane monomer: PR1). ¹ H-NMR and GPC measurements revealed that the average degree of polymerization of ε-caprolactone was 10, and the weight average molecular weight of PR1 was 18,000. The properties of PR1 are summarized in Table 1. The polymerizable functional group possessed by the rotaxane monomer (PR1) is a hydroxyl group.
- The number of moles of the polymerizable functional group (hydroxyl group) introduced into the side chain: 0.59 mmol/g.

<Production Example 2>
A polyrotaxane monomer: PR2 was obtained in the same manner as in Example 1, except that the polyethylene glycol used in Example 1 was changed to PEG6000. A detailed manufacturing method is described below.

(2-1) Preparation of PEG6000diamine;
the following prescriptions;
PEG6000 300g,
CDI (N,N-carbonyldiimidazole) 45g
was prepared, each component was dissolved in 600 mL of dichloromethane, and stirred at room temperature for 6 hours. After washing the organic phase with water, 50 g of ethylenediamine was added and the mixture was further stirred at room temperature for 20 hours. After washing with water, dichloromethane was distilled off under reduced pressure to obtain PEG6000diamine (276 g, yield 90%).

(2-2) preparation of rotaxane;
400 g of PEG6000 diamine prepared above and 630 g of HP-α-CD were dissolved in 800 mL of deionized water. After standing at 4° C. for 2 days, 150 g of sodium trinitrobenzenesulfonate (TNBS) was added, and after stirring for 2 more days, dialysis was performed using a dialysis tube to obtain hydroxypropylated polyrotaxane (480 g, yield: 60%). %). The obtained hydroxypropylated polyrotaxane was identified by ¹ H-NMR and GPC, and confirmed to be a hydroxypropylated polyrotaxane having the desired structure. The degree of modification of the OH group of the cyclic molecule with the hydroxypropyl group was 0.2, and the weight average molecular weight was 15,000 by GPC measurement.

(2-3) Introduction of side chains to rotaxane;
3 g of the hydroxypropylated polyrotaxane obtained above was added to 12 g of ε-caprolactone and dissolved at 80° C. to prepare a mixed solution. This mixture was stirred at 110° C. for 1 hour while blowing dry nitrogen, then 0.6 g of a 50 wt % xylene solution of tin(II) 2-ethylhexanoate was added, and the mixture was stirred at 100° C. for 1 hour. After that, xylene was added to obtain a polycaprolactone-modified polyrotaxane-xylene solution with a non-volatile concentration of about 35% by mass into which side chains were introduced. The resulting polycaprolactone-modified polyrotaxane-xylene solution was dropped into hexane, recovered, and dried to obtain 15 g of rotaxane monomer: PR2. ¹ H-NMR and GPC analysis revealed that the average degree of polymerization of ε-caprolactone was 10, and GPC analysis revealed that the weight average molecular weight of PR2 was 45,000. The properties of PR2 are summarized in Table 1. The polymerizable functional group possessed by the rotaxane monomer (PR2) is a hydroxyl group.
- Mole number of the polymerizable functional group (hydroxyl group) introduced into the side chain: 0.46 mmol/g.

<Comparative Production Example 1>
According to the method described in International Publication No. 2013/099842, the chain portion of the axial molecule is formed of polyethylene glycol having a molecular weight of 2,000, the bulky groups at both ends are adamantyl groups, and the cyclic molecule is α-cyclodextrin. A polyrotaxane monomer: pr1 was synthesized in which an average of 10 molecules of ε-caprolactone were ring-opening polymerized via a propyloxy group. The weight average molecular weight of pr1 was 115,000 by GPC measurement. The properties of pr1 are summarized in Table 1. The polymerizable functional group of the rotaxane monomer (pr1) is a hydroxyl group.
- Mole number of the polymerizable functional group (hydroxyl group) introduced into the side chain: 0.73 mmol/g.

<Example 1>
Using the (A) rotaxane monomer produced in Production Example 1, a curable composition for polishing pads was prepared according to the following recipe to produce a urethane resin (cured body).

PR1 (100 parts by mass) prepared in Example 1 and 4,4′-methylenebis(o-chloroaniline) (MOCA, 21 parts by mass) were mixed at 120° C. to form a uniform solution, and then sufficiently degassed. and cooled to 100° C. (solution 1). Separately, the solution 1 was added to Pre-1 (see below for manufacturing method, 820 parts by mass) heated to 70° C., uniformly mixed, poured into a mold, and cured at 100° C. for 15 hours. After completion of polymerization, the urethane resin was removed from the mold and sliced to obtain a urethane resin having a thickness of 2 mm.

Each compounding amount is shown below.
(A) Rotaxane monomer: 24 parts by mass of PR1.
(B12) Urethane prepolymer: 71 parts by mass of Pre-1.
(B4) Amino group-containing monomer: 5 parts by mass of MOCA.

The urethane resin prepared above was punched into a dumbbell No. 8 shape with a thickness of 2 mm, and the test force was measured when the resin was pulled by 20 mm at 10 mm/min using an AG-SX autograph manufactured by Shimadzu Corporation. The hardness was measured in Shore A hardness by a durometer manufactured by Kobunshi Keiki Co., Ltd. according to JIS standard (hardness test) K6253. The evaluation results are summarized in Table 2. Table 2 also lists the viscosities of the curable compositions.

(B12) Urethane prepolymer Pre-1 was produced according to the following method.
<Method for producing Pre-1>
50 g of 2,4-tolylene diisocyanate, 90 g of polyoxytetramethylene glycol (number average molecular weight: 1000) and 12 g of diethylene glycol were added to a flask equipped with a nitrogen inlet tube, a thermometer and a stirrer at 80° C. for 6 hours under a nitrogen atmosphere. A terminal isocyanate urethane prepolymer (Pre-1) having an iso(thio)cyanate equivalent of 905 was obtained by reaction.

<Example 2>
A urethane resin was prepared and evaluated in the same manner as in Example 1 except that PR2 ((A) rotaxane monomer) prepared in Production Example 2 was used. The evaluation results are summarized in Table 2.

<Comparative Example 1>
A urethane resin was prepared and evaluated in the same manner as in Example 1, except that pr1 prepared in Comparative Production Example 1 was used. The evaluation results are summarized in Table 2.

As is clear from Table 2, by adjusting the inclusion rate of the rotaxane monomer, it was possible to reduce the viscosity of the curable composition constituting the cured product while maintaining the hardness of the obtained cured product. Moreover, by using a rotaxane monomer having a low hydroxyl value, the viscosity of the curable composition could be further reduced.

Production of (A) rotaxane monomer with photochromic moiety introduced into side chain <Production Example 3>
(3-1) Synthesis of photochromic dye;
Formula (6) below

4.7 g (10 mmol) of the compound represented by the following formula (7) synthesized according to the method described in WO 2006/022825 pamphlet

To 5.3 g (15 mmol) of the compound represented by and 0.25 (1 mmol) of pyridinium p-toluenesulfonate, 100 mL of toluene was added, and the mixture was heated and stirred at 75° C. for 1 hour. After cooling to room temperature, the mixture was washed with 100 mL of water three times, and the organic layer was distilled off under reduced pressure. The obtained residue is purified by silica gel column chromatography, and the following formula (8)

6.2 g of the compound represented by are obtained. Yield was 77%.

200 mL of dichloromethane was added to 6.2 g (7.7 mmol) of the compound represented by the above formula (8), 1.55 g (15.5 mmol) of succinic anhydride, and 1.95 g (19.3 mmol) of triethylamine, and the mixture was stirred at room temperature for 12 hours. Stirred. After ice-cooling, 10% hydrochloric acid was slowly added until the pH reached 1, and liquid separation was performed. After washing with 250 mL of water three times, the organic layer was distilled off under reduced pressure. The resulting residue is purified by silica gel chromatography, the following formula (9)

6.6 g (7.3 mmol) of the compound represented by were obtained. Yield was 95%.

(3-2) Preparation of polyrotaxane;
15 g of the PEG6000 diamine and 48 g of HP-α-CD were dissolved in 60 mL of deionized water. After standing at 4° C. for 2 days, 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (DMT-MM) 6.5 g and 3, After adding 3.6 g of 5-dimethoxybenzoic acid and further stirring for 2 days, dialysis was performed using a dialysis tube to obtain hydroxypropylated polyrotaxane (10 g, yield 40%). The obtained hydroxypropylated polyrotaxane was identified by ¹ H-NMR and GPC, and confirmed to be a hydroxypropylated polyrotaxane having the desired structure. The degree of modification of the OH group of the cyclic molecule with the hydroxypropyl group was 0.2, and the weight average molecular weight was 15,000 by GPC measurement. (A) The polymerizable functional group of the rotaxane monomer is a hydroxyl group.

(3-3) introduction of photochromic dye into rotaxane monomer;
10 mL of THF was added to 455 mg of the rotaxane monomer prepared in (5-2) above, 280 mg (0.29 mmol) of the photochromic dye represented by the above formula (9), and 56 mg of dicyclohexylcarbodiimide, and the mixture was stirred at room temperature for 25 hours. After confirming disappearance of the compound represented by the above formula (22) by TLC (thin layer chromatography), the precipitate was filtered off. The obtained solution is dropped into methanol, and the precipitated solid is collected and dried to give the following formula (10)

488 mg of a photochromic rotaxane monomer having a side chain containing a photochromic moiety represented by is obtained.

(3-4) Introduction of side chains to photochromic rotaxane;
450 mg of the photochromic rotaxane monomer having a side chain containing a photochromic site obtained above was added to 150 mg of ε-caprolactone and dissolved at 80° C. to prepare a mixed solution. This mixture was stirred at 110° C. for 1 hour while blowing dry nitrogen, then 0.6 g of a 50 wt % xylene solution of tin(II) 2-ethylhexanoate was added, and the mixture was stirred at 100° C. for 1 hour. After that, xylene was added to obtain a polycaprolactone-modified polyrotaxane-xylene solution with a non-volatile concentration of about 35% by mass into which side chains were introduced. The resulting polycaprolactone-modified polyrotaxane-xylene solution was dropped into hexane, recovered, and dried to obtain 600 mg of dye-bound polyrotaxane monomer: PR3.

¹ H-NMR and GPC analysis revealed that the average degree of polymerization of ε-caprolactone was 10, and GPC analysis revealed that the weight average molecular weight of PR3 was 45,000. The properties of PR3 are summarized in Table 3.
- Mole number of the polymerizable functional group (hydroxyl group) introduced into the side chain: 0.34 mmol/g.
• The number of photochromic sites per molecule 6 .

<Comparative Production Example 2>
According to the method described in International Publication No. 2013/099842, the chain portion of the axial molecule is formed of polyethylene glycol having a molecular weight of 2,000, the bulky groups at both ends are adamantyl groups, and the cyclic molecule is α-cyclodextrin. A dye-bonded polyrotaxane monomer: pr2 was synthesized by ring-opening polymerization of one molecule per CD of the photochromic dye represented by the above formula (9) and an average of 10 molecules of ε-caprolactone via a propyloxy group. The weight average molecular weight of pr2 was 115,000 by GPC measurement. The properties of pr2 are summarized in Table 3.
- Mole number of the polymerizable functional group (hydroxyl group) introduced into the side chain: 0.66 mmol/g.
- Number of photochromic sites per molecule 10;

<Example 3>
Preparation of curable composition, and preparation and evaluation of photochromic cured body (Preparation of curable composition)
A photochromic curable composition was prepared by thoroughly mixing each component according to the following recipe.
prescription;
(A) Photochromic rotaxane monomer PR3 having a side chain containing a photochromic moiety (produced in Production Example 3) 72 mg (dye amount (photochromic moiety): 9.6 μmol).

(B) Polymerizable monomer composition (B1) norbornene methane diisocyanate: 4.58 g.
(B3) Pentaerythritol tetrakis(3-mercaptopropionate): 5.42 g.

(C) Polymerization curing accelerator dimethyltin dichloride 10 mg.

(Preparation and evaluation of photochromic cured body)
A photochromic cured body was obtained by a kneading method using the curable composition having the above composition. The polymerization method is shown below.

After the curable composition was sufficiently defoamed, it was cast into a mold having a thickness of 2 mm, which was composed of a release-treated glass mold and a gasket made of ethylene-vinyl acetate copolymer. . Then, while gradually raising the temperature from 30° C. to 95° C., it was cured over 15 hours. After the polymerization was completed, the photochromic cured product was removed from the glass of the mold, and the photochromic property was evaluated.

Photochromic properties (maximum absorption wavelength, color density, fading speed) were evaluated as follows. The evaluation results are summarized in Table 4.

〔Evaluation item〕
(1) Maximum absorption wavelength (λmax): The maximum absorption wavelength after color development determined by a spectrophotometer (instantaneous multichannel photodetector-MCPD1000) manufactured by Otsuka Electronics Co., Ltd. The maximum absorption wavelength is related to the color tone during color development. Average values are shown in the table.

(2) Color density {ε(120)−ε(0)}: the difference between the absorbance {ε(120)} after light irradiation for 120 seconds and the absorbance ε(0) before light irradiation at the maximum absorption wavelength. . It can be said that the higher the value, the better the photochromic properties. Also, when the color was developed outdoors, the developed color tone was visually evaluated. Average values are shown in the table.

(3) Fading speed [t1/2 (sec.)]: After 120 seconds of light irradiation, when the light irradiation was stopped, the absorbance at the maximum absorption wavelength of the sample was {ε(120)−ε(0)}. time required to drop to 1/2 of It can be said that the shorter the time, the better the photochromic properties.

<Comparative Example 2>
Photochromic rotaxane monomer having a side chain containing a photochromic site synthesized in Comparative Production Example 2: pr2 110 mg (dye amount (photochromic site): 9.6 μmol) Photochromic curing was performed in the same manner as in Example 6. A body was prepared and evaluated. The evaluation results are summarized in Table 4.

Example 3, which uses a rotaxane monomer whose clathrate number satisfies the requirements of the present invention, is considered to have a reduced crosslink density in the thiourethane matrix. It is believed that this creates a free space that allows structural changes associated with the ring-opening and ring-closing of the photochromic dye, thereby improving the photochromic properties.

1: polyrotaxane 2: axial molecule 3: cyclic molecule 4: bulky group 5: side chain 6: polymerizable functional group 7: photochromic site

That is, the present invention
(A) Having a composite molecular structure consisting of a cyclic molecule and an axial molecule penetrating through the ring of the cyclic molecule, wherein the maximum number of inclusions of the cyclic molecule per axial molecule is set to 1. When the average inclusion number of the cyclic molecule is in the range of 0.05 or more and 0.20 or less, and a rotaxane monomer having a polymerizable functional group in the molecule (hereinafter simply "(A) rotaxane monomer", or It may be referred to as "(A) component".) Per 100 parts by mass,
(B) a polymerizable monomer containing at least a polymerizable monomer having a polymerizable functional group capable of polymerizing with the polymerizable functional group of the rotaxane monomer (A) (hereinafter sometimes simply referred to as "polymerizable monomer"); Curing obtained by curing a curable composition containing 100 to 100,000 parts by mass of the composition (hereinafter sometimes simply referred to as "(B) polymerizable monomer composition" or "(B) composition") A polishing pad including a body .

Furthermore, in order to make the reactivity easier to control, the hydroxyl value of the rotaxane monomer (A) is preferably 70 mgKOH/g or less. In particular, when the polymerizable monomer contained in the (B) polymerizable monomer composition is a compound having an iso(thio)cyanate group, a more remarkable effect is exhibited. By setting the hydroxyl value to 70 mgKOH/g or less, reactivity with a polymerizable monomer having an iso(thio)cyanate group can be controlled. As a result, a high-performance cured body can be obtained. Incidentally, commercially available (A) rotaxane monomers usually have a hydroxyl value of more than 70 mgKOH/g.

Claims (10)

(A) Having a composite molecular structure consisting of a cyclic molecule and an axial molecule penetrating through the ring of the cyclic molecule, wherein the maximum number of inclusions of the cyclic molecule per axial molecule is set to 1. When, with respect to 100 parts by mass of a rotaxane monomer having an average inclusion number of the cyclic molecule in the range of 0.05 or more and 0.20 or less and having a polymerizable functional group,
(B) A curable composition containing 100 to 100,000 parts by mass of a polymerizable monomer composition containing a polymerizable monomer having a polymerizable functional group capable of polymerizing with the polymerizable functional group of the rotaxane monomer (A). 2. The curable composition according to claim 1, wherein the (A) rotaxane monomer has a hydroxyl value of 70 mgKOH/g or less. 3. The curable composition according to claim 1, wherein the (A) rotaxane monomer has bulky groups at both ends of the axial molecule so that the cyclic molecule does not leave. The cyclic molecule of the (A) rotaxane monomer has a reactive functional group,
The reactive functional group reacts to introduce a side chain into the cyclic molecule,
The side chain is introduced into 6% or more and 60% or less of all the reactive functional groups in all the cyclic molecules, and the polymerizable functional group of the (A) rotaxane monomer is introduced into the side chain. The curable composition according to any one of claims 1-3. The polymerizable functional group of the (A) rotaxane monomer contains a hydroxyl group,
5. The curable composition according to any one of claims 1 to 4, wherein (B) the polymerizable monomer composition contains (B1) an iso(thio)cyanate compound having an iso(thio)cyanate group. The (B) polymerizable monomer composition is
(B2) an epoxy group-containing monomer having an epoxy group,
(B3) a (thiol) compound having at least one group selected from a hydroxyl group and a thiol group, and (B4) a monomer selected from an amino group-containing monomer having an amino group. Composition. The polymerizable functional group of the (A) rotaxane monomer comprises a (meth)acrylate group,
5. The curable composition according to any one of claims 1 to 4, wherein the (B) polymerizable monomer composition contains a (meth)acrylate compound having a (meth)acrylate group. A polishing pad obtained by curing the curable composition according to any one of claims 1 to 6. In the curable composition according to any one of claims 1 to 7,
A photochromic curable composition, wherein the cyclic molecule of the rotaxane monomer (A) has a site exhibiting photochromic properties. A photochromic cured product obtained by curing the photochromic curable composition according to claim 9 .

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