JP2023129436A - Polymer and synthetic resin - Google Patents

Abstract

To provide a (meth)acrylic acid ester for producing a polymer with low odor and high heat resistance.SOLUTION: The polymer is a homopolymer of a compound represented by formula (1), where R1 represents a hydrogen atom or a methyl group. Alternatively, the polymer is a copolymer comprising a constituent unit of the compound represented by formula (1) and a constituent unit of a specific monomer, and is used as a coating or adhesive for building components.SELECTED DRAWING: None

Description

The present invention relates to polymers and synthetic resins.

Acrylic resins are used in a variety of applications because they tend to have high transparency and high weather resistance. Such uses include optical members, building materials, and the like. In particular, for applications that are expected to be used outdoors, for example, temperatures can exceed 60°C due to direct sunlight, so it has high heat resistance that does not change its performance even at such high temperatures. Acrylic resin is in demand. Generally, in order to improve the heat resistance of an acrylic resin, it is considered that it is preferable that the acrylic resin is a polymer of acrylic monomers having a rigid skeleton.

An example of a rigid skeleton is an alicyclic skeleton, and as an acrylic monomer having an alicyclic moiety, for example, Patent Document 1 describes tricyclodecenyl acrylate represented by the following formula (3) with a structure The resin composition used as a unit is described. Furthermore, Patent Document 2 describes tricyclodecenylmethyl butyrate, which has a structure similar to tricyclodecenyl acrylate and has a carbon-carbon double bond, and is represented by the following formula (4). Are listed.

Japanese Patent Application Publication No. 2013-080097 Japanese Unexamined Patent Publication No. 58-124727

However, according to studies conducted by the present inventors, it was found that tricyclodecenyl acrylate described in Patent Document 1 has a strong odor and may not be suitable for applications requiring low odor. . Furthermore, as can be inferred from Patent Document 2, odors vary depending on the compound, and the type and intensity of the odor perceived by humans tends to vary greatly depending on substituents and the like. Therefore, it is difficult to predict the odor of an analog having an unsaturated double bond from the odor of tricyclodecenylmethyl butyrate disclosed in Patent Document 2. Furthermore, tricyclodecenylmethyl butyrate does not have an α,β-unsaturated carbonyl moiety, so it is difficult to use it as an acrylic resin. Furthermore, Patent Document 2 also describes ester compounds and ether compounds having unsaturated double bonds, such as tricyclodecenylmethyl acetate and methyl (tricyclodecenylmethyl)ether; , it is difficult to use as acrylic resin.

Therefore, an object of the present invention is to provide a (meth)acrylic ester for producing a polymer having low odor and high heat resistance.

As a result of intensive studies in view of the problems of the prior art, the present inventors discovered that the (meth)acrylic acid ester represented by the following formula (1) can achieve the above object, and completed the present invention. Ta. That is, the gist of the present invention is as follows.

[1] A compound represented by the following formula (1).

（式（１）中、Ｒ^１は水素原子又はメチル基を表す。）
［２］前記式（１）中、Ｒ１がメチル基である、［１］に記載の化合物。
［３］［１］に記載の化合物の重合体。
［４］［３］に記載の重合体を含む合成樹脂。
［５］下記式（２）で表わされるアルコールと、（メタ）アクリル酸、（メタ）アクリル酸エステル、無水（メタ）アクリル酸及び（メタ）アクリル酸クロライドのうちいずれか１種以上と、を反応させる、請求項１に記載の化合物の製造方法。

(In formula (1), R ¹ represents a hydrogen atom or a methyl group.)
[2] The compound according to [1], wherein in the formula (1), R1 is a methyl group.
[3] A polymer of the compound described in [1].
[4] A synthetic resin containing the polymer according to [3].
[5] An alcohol represented by the following formula (2) and any one or more of (meth)acrylic acid, (meth)acrylic ester, (meth)acrylic anhydride, and (meth)acrylic acid chloride; A method for producing the compound according to claim 1, which comprises reacting.

According to the present invention, it is possible to provide a (meth)acrylic acid ester for producing a polymer having low odor and high heat resistance.

Embodiments of the present invention will be described in detail below. The explanation of the constituent elements described below is an example (representative example) of an embodiment of the present invention, and the present invention is not limited to these contents unless it exceeds the gist thereof.

In addition, in this specification, (meth)acrylic acid means acrylic acid and/or methacrylic acid. Moreover, (meth)acrylic ester means acrylic ester and/or methacrylic ester. Moreover, (meth)acrylic anhydride means acrylic anhydride and/or methacrylic anhydride. Moreover, (meth)acrylic acid chloride means acrylic acid chloride and/or methacrylic acid chloride. In addition, (meth)acrylic acid, (meth)acrylic ester, (meth)acrylic anhydride, and (meth)acrylic acid chloride are collectively referred to as (meth)acrylic acids. Moreover, polymerization means homopolymerization and/or copolymerization. Moreover, a polymer means a homopolymer and/or a copolymer.

<1. Compound according to this embodiment>
The (meth)acrylic ester according to this embodiment has a structure represented by the following formula (1).

In formula (1), R ¹ represents a hydrogen atom or a methyl group. Among these, R1 is preferably a methyl group.

When the compound represented by the above formula (1) is used as a raw material for synthetic resins such as paints and adhesives, it is possible to achieve both high heat resistance and low odor.

<2. Method for producing a compound represented by formula (1)>
The method for producing the compound represented by formula (1) is not particularly limited, but it can be produced by reacting (meth)acrylic acids and tricyclodecenylmethanol. That is, one or more selected from (meth)acrylic acid, (meth)acrylic ester, (meth)acrylic anhydride, and (meth)acrylic acid chloride are reacted with tricyclodecenylmethanol. It can be manufactured by

(Tricyclodecenylmethanol)

Tricyclodecenylmethanol is a compound represented by the following formula (2).

The purity of tricyclodecenylmethanol is not particularly limited, but it is preferably 50% by mass or more, more preferably 70% by mass or more, and even more preferably 85% by mass or more. , 90% by mass or more is particularly preferred, and most preferably 95% by mass or more. By using tricyclodecenylmethanol with a purity of 50% by mass or more, the amount of tricyclodecenylmethyl (meth)acrylate produced per reaction volume can be increased.

Tricyclodecenylmethanol may be a compound represented by the following formula (5), a compound represented by the following formula (6), or a mixture of these isomers, and the isomer ratio is not particularly limited. do not have.

As tricyclodecenylmethanol, commercially available products can be used, and tricyclodecenylmethanol produced by known methods can also be used. For example, it can be produced from dicyclopentadiene by a known method.

((meth)acrylic acids)
The purity of the total amount of (meth)acrylic acids used in the present invention is not particularly limited, but is preferably 50% by mass or more, more preferably 70% by mass or more, and 85% by mass. It is more preferably at least 90% by mass, particularly preferably at least 95% by mass, and most preferably at least 95% by mass. By using (meth)acrylic acids with a purity of 50% by mass or more, the amount of tricyclodecenylmethyl (meth)acrylate produced per reaction volume can be increased.

As (meth)acrylic acids, (meth)acrylic acid or (meth)acrylic acid ester is preferable in order to improve the recovery of unreacted raw materials, by-products, and solvents, and to reduce waste disposal. . There are no particular restrictions on the (meth)acrylic acid ester, but in order to recover unreacted raw materials and byproducts at lower temperatures, (meth)acrylic acid ester is made of (meth)acrylic acid and an alcohol having 4 or less carbon atoms. An acrylic ester is preferable, a (meth)acrylic ester consisting of (meth)acrylic acid and an alcohol having 2 or less carbon atoms is more preferable, and a (meth)acrylic ester consisting of (meth)acrylic acid and an alcohol having 1 carbon number is more preferable. Acid esters are particularly preferred. Specific examples of such (meth)acrylic esters include methyl (meth)acrylate, ethyl (meth)acrylate, n-butyl (meth)acrylate, and isobutyl (meth)acrylate. .

Among (meth)acrylic acid and (meth)acrylic ester, (meth)acrylic ester is more preferred, and methacrylic ester is even more preferred. As the methacrylic ester, methyl methacrylate is preferred from the viewpoint of recovery of by-product alcohol and availability of raw materials.

The amount of (meth)acrylic acids is not particularly limited, but is preferably 0.1 mol or more and 50.0 mol or less per 1 mol of tricyclodecenylmethanol. By setting the amount of (meth)acrylic acids used to 0.1 mol or more and 50.0 mol or less per 1 mol of tricyclodecenyl methanol, tricyclodecenyl (meth)acrylate per reaction volume can be used. The amount of methyl produced can be increased. Among these, the amount of (meth)acrylic acids per mol of tricyclodecenylmethanol is more preferably 0.5 mol or more, even more preferably 0.8 mol or more, and 1.0 mol or more. It is particularly preferable that On the other hand, the amount of (meth)acrylic acids per mol of tricyclodecenylmethanol is more preferably 30.0 mol or less, even more preferably 10.0 mol or less, and 5.0 mol or less. It is particularly preferable that there be.

When tricyclodecenylmethanol and (meth)acrylic acids are reacted, a catalyst may or may not be used, but it is preferable to use it from the viewpoint of improving the reaction rate.

The catalyst only needs to be present in at least some stages of the reaction process, and does not need to be present in all stages of the reaction process. For example, after the catalyst is added to the reaction system, some change may occur in the catalyst during the reaction process.

The catalyst is not particularly limited and can be selected depending on the (meth)acrylic acid used as a raw material. For example, when using (meth)acrylic ester as a raw material, a known transesterification catalyst can be used.

Examples of transesterification catalysts include Group 1 metal compounds, Group 2 metal compounds, titanium compounds, tin compounds, and zirconium compounds.

Examples of the first metal compound include lithium hydroxide, sodium hydroxide, potassium hydroxide, lithium carbonate, sodium carbonate, potassium carbonate, lithium methoxide, sodium methoxide, potassium methoxide, lithium-t-butoxide, and sodium-t-butoxide. -butoxide, potassium-t-butoxide, and the like.

Examples of Group 2 metal compounds include magnesium hydroxide, calcium hydroxide, magnesium oxide, calcium oxide, magnesium carbonate, calcium carbonate, magnesium methoxide, calcium methoxide, magnesium-t-butoxide, calcium-t-butoxide, etc. can be mentioned.

Examples of the titanium compound include tetramethoxytitanium, tetraethoxytitanium, tetra-i-propoxytitanium, and tetra-n-butoxytitanium.

Examples of the tin compound include dibutyltin oxide and dioctyltin oxide.

Examples of the zirconium compound include zirconium tetraacetylacetonate.

From the viewpoint of activity and catalyst separation, titanium compounds are preferred, tetramethoxytitanium and tetra-n-butoxytitanium are more preferred, and tetramethoxytitanium is even more preferred.

As these catalysts, commercially available catalysts can be used, or catalysts produced by known methods can also be used. Moreover, these catalysts may be used alone or in combination of two or more.

The amount of the catalyst used in the present invention is not particularly limited, but it is preferably 0.000001 mol or more and 4 mol or less per 1 mol of tricyclodecenylmethanol. By setting the amount of catalyst used to 0.000001 mol or more per 1 mol of tricyclodecenylmethanol, it is possible to effectively suppress a decrease in catalyst activity due to impurities. By controlling the amount of the catalyst used to 4 mol or less per 1 mol of tricyclodecenylmethanol, the load on the post-treatment process after the reaction can be reduced and economical efficiency can be improved. Among these, the amount of the catalyst used per mol of tricyclodecenylmethanol is more preferably 0.00001 mol or more, even more preferably 0.00005 mol or more, and even more preferably 0.0001 mol or more. It is particularly preferable that the amount is 0.0005 mol or more, and most preferably 0.001 mol or more. On the other hand, the amount of catalyst used per 1 mol of tricyclodecenylmethanol is more preferably 1 mol or less, even more preferably 0.5 mol or less, particularly preferably 0.2 mol or less. , is particularly preferably at most 0.05 mol, most preferably at most 0.01 mol.

Further, the catalyst may be in a dissolved state or in an undissolved state in the reaction liquid, but it is preferably in a dissolved state. By dissolving the catalyst in the reaction solution, the production rate of tricyclodecenylmethyl (meth)acrylate can be improved.

When tricyclodecenylmethanol and (meth)acrylic acids are reacted, a solvent may or may not be used.

When a solvent is used, it is preferably a solvent that does not react with tricyclodecenylmethanol, (meth)acrylic acids, the catalyst, and the resulting compound. Further, although not particularly limited, it is preferable from the viewpoint of separation to use a solvent that has a large boiling point difference with tricyclodecenylmethyl (meth)acrylate. Specifically, it is preferable that the solvent has a boiling point difference of 100° C. or more with respect to tricyclodecenylmethyl (meth)acrylate, and more preferably a solvent that has a boiling point difference of 150° C. or more.

Examples of such solvents include hydrocarbon solvents such as hexane, toluene, and xylene; ether solvents such as diethyl ether and tetrahydrofuran; ketone solvents such as acetone, methyl ethyl ketone, and methyl isobutyl ketone; dimethyl formamide, dimethyl acetamide, etc. Examples include amide solvents. These may be used alone or in combination of two or more. The amount of solvent used is also not limited and can be selected as appropriate.

The amount of solvent used relative to tricyclodecenylmethanol is not particularly limited, but in order to improve the productivity of tricyclodecenylmethyl (meth)acrylate, it is preferable that the amount of solvent used is small. Specifically, it is preferably 50% by mass or less, more preferably 10% by mass or less, particularly preferably 5% by mass or less, and most preferably no solvent is used.

The reaction temperature is not particularly limited, but is preferably -20°C or more and 200°C or less. By setting the reaction temperature to -20°C or higher, the reaction can proceed smoothly. By controlling the reaction temperature to 200° C. or lower, polymerization and side reactions can be suppressed. Among these, the reaction temperature is more preferably 0°C or higher, even more preferably 30°C or higher, and particularly preferably 60°C or higher. On the other hand, the reaction temperature is more preferably 180°C or lower, even more preferably 150°C or lower, and particularly preferably 130°C or lower. Note that the reaction temperature does not need to be constant and may be varied within a preferred range.

The reaction time is not particularly limited and can be appropriately selected depending on the scale and conditions of the reaction. For example, the reaction time is preferably 0.5 hours or more and 100 hours or less. By setting the reaction time to 0.5 hours or more, the reaction can proceed smoothly. By setting the reaction time to 100 hours or less, polymerization and side reactions can be suppressed. Among these, the reaction time is more preferably 1 hour or more, and even more preferably 3 hours or more. On the other hand, the reaction time is more preferably 60 hours or less, and even more preferably 30 hours or less. In addition, the reaction time when a continuous tank type reactor is used is determined by dividing the volume of the reaction solution by the flow rate at which it is extracted from the reactor.

The pressure during the reaction is not particularly limited, and may be in a reduced pressure state, atmospheric pressure, or a pressurized state.

The method of introducing the raw materials into the reaction vessel is not particularly limited, but all may be introduced at once, may be introduced in stages, or may be introduced continuously. An introduction method that combines the following may also be used.

The form of the reaction vessel for carrying out the reaction is not particularly limited, and a batch tank reactor, a continuous tank reactor, a continuous tubular reactor, etc. can be used, and a batch tank reactor is preferred. .

The reaction solution may contain compounds other than those listed above. For example, a polymerization inhibitor may be added to the reaction solution so that the polymerization inhibitor coexists in the reaction solution. The polymerization inhibitor is not particularly limited, but includes, for example, quinone polymerization inhibitors such as benzoquinone; phenol, 1,4-benzenediol, 4-methoxyphenol, 2,6-di-tert-butylphenol, , 4-di-tert-butylphenol, 2-tert-butyl-4,6-dimethylphenol, 2,6-di-tert-butyl-4-methylphenol, 2,4,6-tri-tert-butylphenol, etc. Phenol polymerization inhibitor; Amine polymerization inhibitor such as alkylated diphenylamine, N,N'-diphenyl-p-phenylenediamine, phenothiazine; 4-hydroxy-2,2,6,6-tetramethylpiperidine-N-oxyl (HO-TEMPO), 4-benzoyloxy-2,2,6,6-tetramethylpiperidine-N-oxyl (BTOX), 4-acetamino-2,2,6,6-tetramethylpiperidine-N-oxyl ( N-oxyl polymerization inhibitors such as AMX); copper dithiocarbamate polymerization inhibitors such as copper metal, copper sulfate, copper dimethyldithiocarbamate, copper diethyldithiocarbamate, copper dibutyldithiocarbamate, and the like. Among these, 4-methoxyphenol is preferred. These polymerization inhibitors may be used alone or in combination of two or more.

In addition, when using a polymerization inhibitor, the amount of the polymerization inhibitor relative to tricyclodecenylmethanol is 0.001 mass by mass in order to suppress the polymerization of the obtained tricyclodecenylmethyl (meth)acrylate. % or more, more preferably 0.01% by mass or more, particularly preferably 0.1% by mass or more, while the obtained tricyclodecenylmethyl (meth)acrylate In order to suppress coloring, the content is preferably 100% by mass or less, more preferably 50% by mass or less, and particularly preferably 10% by mass or less.

During reaction, product purification, and storage of product-containing solutions and purified tricyclodecenylmethyl (meth)acrylate solutions, be sure to It is preferable to make the gas phase part an oxygen-containing gas atmosphere, and it is more preferable to blow an oxygen-containing gas such as oxygen or air into the reaction solution. The oxygen-containing gas may be introduced from two or more locations in the reaction vessel, and its flow rate is not particularly limited.

The obtained tricyclodecenylmethyl (meth)acrylate can be purified if necessary. The purification method is not particularly limited, and any known method can be used. Examples of purification methods include liquid separation, distillation, crystallization, filtration, and chromatography. These may be carried out alone or in combination of two or more.

When removing insoluble byproducts by filtration, it may be carried out under reduced pressure, atmospheric pressure, or increased pressure, but it is preferably carried out under increased pressure. Further, if necessary, a filter aid can be used, and examples thereof include diatomaceous earth, perlite, cellulose, and the like. The temperature and pressure at which the filtration is performed, and the type and amount of the filter aid can be appropriately selected depending on the reaction conditions and the like.

When tricyclodecenylmethyl (meth)acrylate is washed by liquid separation, it can be washed using an alkaline aqueous solution such as an aqueous sodium hydroxide solution or an aqueous potassium hydroxide solution. The alkali concentration of the alkaline aqueous solution used and the number of times of washing can be appropriately selected depending on the reaction conditions and the like.

The distillation method is not particularly limited, and examples thereof include simple distillation, precision distillation, thin film distillation, and the like. Among these, thin film distillation is preferred. The distillation may be carried out under reduced pressure, atmospheric pressure, or increased pressure, but it is preferably carried out under reduced pressure.

The storage container for tricyclodecenylmethyl (meth)acrylate is not particularly limited, and examples thereof include glass containers, resin containers, metal storage tanks, drums, and lorries.

<3. Application>
The compound represented by formula (1) is not particularly limited, but can be used, for example, as a food additive, a cosmetic additive, an optical member, a building material, a pharmaceutical raw material, a fragrance, a synthetic resin raw material, etc. . The synthetic resin raw material may be a resin additive. In addition, the synthetic resin raw materials can be used for paints, adhesives, various materials, etc., and these can be suitably used for optical members and architectural members. Among these, the compound represented by formula (1) is preferably used as a raw material for synthetic resins. Hereinafter, preferred embodiments will be explained.

(synthetic resin raw material)
The compound represented by formula (1) can be polymerized and used as a polymer, and further can be used as a synthetic resin containing the polymer. The polymer may be a homopolymer of the compound represented by formula (1) or a copolymer of the compound represented by formula (1) and another monomer. In the case of a copolymer, the composition of the copolymer is not particularly limited. However, in order to obtain a polymer that has both high heat resistance and low odor, the number of constituent units of the compound represented by formula (1) relative to the number of constituent units constituting the polymer must be 5 mol% or more. It is preferably at least 10 mol%, more preferably at least 20 mol%.

Other monomers are not particularly limited as long as they are copolymerizable with the compound represented by formula (1). Examples of copolymerizable monomers include monomers having a vinyl group. For example, aromatic monomers such as styrene, α-methylstyrene, t-butylstyrene, chlorostyrene; methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, (meth)acrylic (meth)acrylic acid ester monomers such as phenyl acid, 2-hydroxylethyl (meth)acrylate, glycidyl (meth)acrylate, allyl (meth)acrylate, and 2-dimethylaminoethyl (meth)acrylate; Examples include (meth)acrylic acid; (meth)acrylic acid amide; (meth)acrylonitrile; vinyl chloride; vinyl acetate; maleic anhydride and the like. Further, polyfunctional vinyl monomers such as ethylene glycol dimethacrylate, trimethylolpropane trimethacrylate, and divinylbenzene can be used. These monomers may be used alone or in combination of two or more.

From the viewpoints of copolymerizability, compatibility, imparting functionality, etc., (meth)acrylic acid ester monomers and (meth)acrylic acid are preferred as copolymerizable monomers.

The mass average molecular weight of the polymer is not particularly limited, but is preferably 1,000 or more and 1,000,000 or less. If the mass average molecular weight is 1000 or more, the physical properties of the polymer will be good. Moreover, if the mass average molecular weight is 1,000,000 or less, moldability will be good. Note that the mass average molecular weight is a value calculated by gel permeation chromatography (GPC), which will be described later.

The method for producing the polymer is not particularly limited, and any known method can be used. Examples of polymerization systems include bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization. Further, as the polymerization method, radical polymerization or anionic polymerization is preferable from the viewpoint of productivity, imparting functionality, etc., and radical polymerization is preferable.

As the radical polymerization initiator, known compounds suitable for thermal polymerization, photopolymerization, etc. can be used. In thermal polymerization, peroxides such as benzoyl peroxide, methyl ethyl ketone peroxide, and t-butyl hydroperoxide; 2,2'-azobisisobutyronitrile, 2,2'-azobis-2-methylbutyronitrile, Examples include azo compounds such as 1,1'-azobis(cyclohexane-1-carbonitrile). Examples of photopolymerization include benzophenone, acetophenone, benzoin, and the like.

The amount of the radical polymerization initiator used is not particularly limited, but is preferably 0.1% by mass or more, more preferably 0.3% by mass or more based on the monomer. Further, the content is preferably 5% by mass or less, more preferably 3% by mass or less based on the monomer.

Known chain transfer agents such as mercaptans may be used to control the molecular weight of the polymer.

In order to make the polymerization proceed smoothly, known polymerization accelerators such as metal salts such as cobalt naphthenate; tertiary amines such as dimethylaniline may be used.

Polymerization to produce a polymer can be carried out without a solvent or in a solvent. Examples of solvents include, but are not limited to, hydrocarbon solvents such as hexane and toluene; ketone solvents such as acetone, methyl ethyl ketone, and methyl isobutyl ketone; ester solvents such as methyl acetate and ethyl acetate; tetrahydrofuran and anisole. ether solvents such as; water and the like. These may be used alone or in combination of two or more. The amount of solvent used is also not limited and can be selected as appropriate.

The atmosphere during polymerization is not particularly limited as long as polymerization is not inhibited, but an inert atmosphere such as nitrogen or argon is preferred. Oxygen reacts with radicals and inhibits polymerization.

The polymerization temperature is preferably 0° C. or higher, more preferably 25° C. or higher in order to allow the polymerization to proceed smoothly. Further, from the viewpoint of controlling the polymerization reaction, the temperature is preferably 200°C or lower, more preferably 150°C or lower. Note that the reaction temperature does not need to be constant and may be varied within a preferred range.

The amount of the compound represented by formula (1) to be used is preferably 0.1% by mass or more, more preferably 1% by mass or more, and even more preferably 5% by mass or more, based on the total amount of monomers. By using 0.1% by mass or more, heat resistance can be imparted to the polymer.

Note that the synthetic resin may contain compounds other than the polymer, such as additives that impart functions.

As mentioned above, the compound represented by formula (1) can be suitably used as a raw material for synthetic resins, and in particular, it can be suitably used as a syrup composition used for flooring materials in building materials. can. In this case, for example, component (A) composed of an acrylic monomer containing the compound represented by formula (1), a polymer of acrylic monomer, an epoxy (meth)acrylate oligomer, and urethane (meth)acrylate It is preferable that the composition contains a component (B) containing at least one type of oligomer and a wax. Moreover, a curing accelerator may be included. Examples include compounds exemplified in JP-A No. 2009-203480.

In addition to the compound represented by formula (1), examples of acrylic monomers include 2-hydroxyethyl (meth)acrylate, 2-hydroxypropyl (meth)acrylate, and 2-hydroxypropyl (meth)acrylate. Hydroxybutyl, 4-hydroxybutyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, ethoxydiethylene glycol (meth)acrylate, ethylene glycol di(meth)acrylate, 1,3 di(meth)acrylate -Propylene glycol, 1,4-butanediol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, diethylene glycol di(meth)acrylate, polyethylene glycol di(meth)acrylate, Examples include polypropylene glycol (meth)acrylate, polybutylene glycol di(meth)acrylate, and bisphenol A ethylene oxide adduct of di(meth)acrylate. In addition, these monomers may use the compound represented by Formula (1) individually, and may use 2 or more types together.

The acrylic monomer polymer, epoxy (meth)acrylate oligomer, and urethane (meth)acrylate oligomer include compounds described in JP-A-2009-203480. Note that the mass average molecular weight of these polymers and oligomers is preferably 30,000 or less, although there is no particular restriction.

The wax is not particularly limited, but it is preferably a dispersed wax. Examples of such wax include BYK-LP-S6665 manufactured by Big Chemie.

The ratio of component (A) to a total of 100 parts by mass of components (A) and (B) is not particularly limited, but is preferably 20 parts by mass or more, more preferably 30 parts by mass or more, On the other hand, it is preferably 90 parts by mass or less, and preferably 85 parts by mass or less.

The ratio of component (B) to a total of 100 parts by mass of components (A) and (B) is not particularly limited, but is preferably 10 parts by mass or more, more preferably 15 parts by mass or more, On the other hand, it is preferably 80 parts by mass or less, and preferably 70 parts by mass or less.

The ratio of wax to 100 parts by mass in total of component (A) and component (B) is not particularly limited, but is preferably 0.01 part by mass or more, more preferably 0.1 part by mass or more. On the other hand, it is preferably 5 parts by mass or less, and more preferably 0.5 parts by mass or less.

The present invention will be specifically described below with reference to Examples, but the present invention is not limited to these Examples and may be implemented with arbitrary changes within the scope of the gist of the present invention. be able to. In addition, the data in Examples and Comparative Examples were measured by the following method.

(1) Yield The yield was calculated using the following formula.
Yield (%) = (Number of moles of target product) / (Number of moles of standard raw material) x 100
(2) Purity The purity of each compound was calculated by gas chromatography (column: DB-1).
Purity (%) = (peak area of target product) / (sum of all peak areas) x 100
(3) Glass transition temperature Measured in the range from 25°C to 220°C at a heating rate of 10°C/min using a differential scanning calorimeter (manufactured by Seiko Instruments Inc., trade name: DSC6200). The value of the extrapolated glass transition start temperature as a result of the second heating was used as the glass transition temperature.
(4) Mass average molecular weight GPC (manufactured by Nippon Waters Co., Ltd., trade name: Alliance 2695 system) was used, using tetrahydrofuran as a solvent, polystyrene as a standard sample, TSKgel super H3000, H4000, and H6000 as columns, and a flow rate of 0.5 mL/ The mass average molecular weight was measured in a column oven at 40°C.

In the examples, tricyclodecenyl methanol was synthesized by a known method and had a purity of 99% by mass. Methyl methacrylate with a purity of 99% by mass was used.

<Manufacture example 1>
500 g (3.04 mol) of tricyclodecenyl methanol, 1524 g (15.22 mol) of methyl methacrylate, and a polymerization inhibitor were placed in a 3L glass four-necked flask equipped with a Dimroth condenser, a Dean-Stark device, and an air introduction tube. As a result, 1.52 g (12.3 mmol) of 4-methoxyphenol was sequentially added.
Air was blown into this mixture at a flow rate of 10 mL/min, and the mixture was stirred for 1 hour while being heated to reflux at a bath temperature of 125°C. The water content of the mixed liquid at this time was 79 ppm.

1.09 g (6.08 mmol) of 95% by mass tetramethoxytitanium was added to this liquid mixture, and the mixture was stirred for 14 hours while heating under reflux at a bath temperature of 125°C. During this time, by-produced methanol was extracted from the Dean-Stark apparatus. At this time, the internal temperature was 92 to 109°C.

109 g of Celite and 19 g of water were added to the resulting reaction solution, and the mixture was stirred for 30 minutes at a bath temperature of 70°C. Thereafter, pressure filtration was performed using nitrogen at 0.2 MPa to remove solid content. Next, methyl methacrylate was distilled off and concentrated using an evaporator under conditions of 50° C. and 4.3 to 9.3 kPa.

The obtained concentrate was transferred to a separating funnel, 1000 g of n-hexane and 244 g of a 10% by mass aqueous sodium hydroxide solution were added, and the mixture was vigorously shaken to mix, and then left to stand to separate into an oil layer and an aqueous layer. The aqueous layer was extracted from the bottom, and then the same operation was performed on the oil layer without adding n-hexane, and the oil layer was washed once with 224 g of a 10% by mass aqueous sodium hydroxide solution and twice with 250 g of water. After adding 128 mg of 4-methoxyphenol as a polymerization inhibitor to the obtained oil layer, n-hexane was distilled off and concentrated using an evaporator at 40° C. and 5.2 to 12.1 kPa. Next, the mixture was concentrated using a vacuum pump under conditions of 65° C. and 0.3 to 1.3 kPa while introducing air.
As a result, 682 g (2.94 mol) of tricyclodecenylmethyl methacrylate (a compound in which R1 is a methyl group in the above formula (1)) was obtained as a pale yellow transparent liquid with a purity of 98.6%. The overall yield based on tricyclodecenylmethanol was 97%.

<Example 1>
Comparative test: The odor of 100 g of tricyclodecenylmethyl methacrylate obtained in Production Example 1 was placed in a 110 mL glass container. The results are shown in Table 1. Note that odor evaluation was based on the following criteria.

(Evaluation criteria)
○: Odorless or only a slight scent that is not unpleasant.
△: Odor is felt to some extent.
×: There is a bad odor, or there is a strong odor even if it is not unpleasant.

Next, in a 100 mL glass four-necked flask equipped with a nitrogen introduction tube, 15.0 g (65 mmol) of tricyclodecenyl methacrylate, 30 g (278 mmol) of anisole, and 2,2'-azobisisobutyrochloride were added. 11 mg (6.5 μmol) of nitrile (AIBN) was sequentially added.
Thereafter, nitrogen was blown into the gas phase at a flow rate of 10 mL per minute, and the mixture was stirred at a bath temperature of 80° C. for 4 and a half hours. Thereafter, the mixture was stirred for 1 hour at a bath temperature of 100°C.
Next, the mixture was diluted with 30 g (278 mmol) of anisole, and the resulting diluted solution was added dropwise to acetone, and the precipitated white solid was filtered off. Then, the obtained white solid was vacuum dried at 25°C to obtain a polymer of tricyclodecenylmethyl methacrylate. The glass transition temperature and mass average molecular weight of the polymer were measured by the above method. The results obtained are shown in Table 1.

<Comparative Examples 2 to 4>
Odor evaluation was performed in the same manner as in Example 1, except that the compounds shown in Table 1 were used instead of tricyclodecenylmethyl methacrylate. The results obtained are shown in Table 1. Further, a polymer was produced in the same manner as in Example 1, except that the compounds shown in Table 1 were used instead of tricyclodecenylmethyl methacrylate. The glass transition temperature and mass average molecular weight of these polymers are shown in Table 1. For tetrahydrofurfuryl methacrylate, Acryester THF (trade name manufactured by Mitsubishi Chemical Corporation) was used, and for tricyclodecanyl methacrylate, FA-513M (trade name manufactured by Hitachi Chemical Co., Ltd.) was used. As oxyethyl, FA-512M (trade name) manufactured by Hitachi Chemical Co., Ltd. was used.

From the results in Table 1, it is clear that little odor is generated during polymerization of tricyclodecenylmethyl methacrylate, and that the glass transition temperature is 80°C or higher, so it has high heat resistance that can be used outdoors. I know that there is.

Although the present invention has been described above with reference to the embodiments and examples, the present invention is not limited to the above embodiments and examples. The configuration and details of the present invention can be modified in various ways that can be understood by those skilled in the art within the scope of the present invention.

Claims (4)

A polymer that is a homopolymer of a compound represented by the following formula (1).

(In formula (1), R ¹ represents a hydrogen atom or a methyl group.) A polymer of a compound represented by the following formula (1),
The structural unit of the compound represented by the formula (1), methyl (meth)acrylate, ethyl (meth)acrylate, butyl (meth)acrylate, phenyl (meth)acrylate, 2-(meth)acrylate At least one (meth)acrylic acid ester monomer selected from hydroxyethyl, glycidyl (meth)acrylate, allyl (meth)acrylate, 2-dimethylaminoethyl (meth)acrylate, and (meth)acrylic acid. It is a copolymer consisting of the structural units of
A polymer used in paints or adhesives for building materials.

(In formula (1), R ¹ represents a hydrogen atom or a methyl group.) The polymer according to claim 1 or 2, wherein in the formula (1), R ¹ is a methyl group. A synthetic resin comprising the polymer according to claim 1 or 2.