JP5737001B2 - Method for producing light stabilizer composition and method for producing curable composition - Google Patents
Method for producing light stabilizer composition and method for producing curable composition Download PDFInfo
- Publication number
- JP5737001B2 JP5737001B2 JP2011138294A JP2011138294A JP5737001B2 JP 5737001 B2 JP5737001 B2 JP 5737001B2 JP 2011138294 A JP2011138294 A JP 2011138294A JP 2011138294 A JP2011138294 A JP 2011138294A JP 5737001 B2 JP5737001 B2 JP 5737001B2
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- JP
- Japan
- Prior art keywords
- light stabilizer
- polymer
- hindered amine
- polyol
- composition
- Prior art date
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- 239000004611 light stabiliser Substances 0.000 title claims description 138
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Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Polyethers (AREA)
Description
本発明は光安定剤組成物の製造方法、および該方法で得られる光安定剤組成物を用いた硬化性組成物の製造方法に関する。 The present invention relates to a method for producing a light stabilizer composition and a method for producing a curable composition using the light stabilizer composition obtained by the method.
加水分解性ケイ素基を有するポリオキシアルキレン重合体（以下、変成シリコーンポリマーということもある。）は室温で液状であり、加水分解反応により硬化して、柔軟性を有するゴム状硬化物を形成する。
かかる変成シリコーンポリマーを含む硬化性組成物は、シーリング材、接着剤、コーティング剤等として広く使用されている。
変成シリコーンポリマーを含む硬化性組成物を、例えば屋外に施工されるシーリング材として用いる場合には、硬化物の耐候性が良好で、長期間紫外線に暴露されても、表面にクラック（細かいヒビ割れ）や白化（チョーキング）が生じにくいことが求められる。
A polyoxyalkylene polymer having a hydrolyzable silicon group (hereinafter sometimes referred to as a modified silicone polymer) is liquid at room temperature and is cured by a hydrolysis reaction to form a flexible rubber-like cured product. .
Curable compositions containing such modified silicone polymers are widely used as sealing materials, adhesives, coating agents and the like.
When a curable composition containing a modified silicone polymer is used as, for example, a sealing material applied outdoors, the cured product has good weather resistance, and even if it is exposed to ultraviolet rays for a long time, cracks (fine cracks) on the surface. ) And whitening (choking) are less likely to occur.
変成シリコーンポリマーを用いた硬化性組成物に、耐光安定剤としてヒンダードアミン系化合物を添加することは知られている（例えば、特許文献１）。
下記特許文献２の実施例１，２には、全末端の８０％が加水分解性ケイ素基である変成シリコーンポリマー中に、アクリル系モノマーおよび重合開始剤を滴下し、重合反応させて得られるアクリル変性シリコーン重合体と、ヒンダードアミン系安定剤と、紫外線吸収剤と老化防止剤を含む硬化性組成物が記載されている。
また下記特許文献３は、加水分解性ケイ素基を有するイソブチレン系重合体に関するもので、硬化物のクラックや白化を改善するために、特定の光硬化性化合物と、空気酸化硬化性化合物（例えば乾性油）と、第３級ヒンンダードアミン系光安定剤を添加することが記載されている。
It is known to add a hindered amine compound as a light-resistant stabilizer to a curable composition using a modified silicone polymer (for example, Patent Document 1).
In Examples 1 and 2 of the following Patent Document 2, acrylic monomers obtained by dropping an acrylic monomer and a polymerization initiator into a modified silicone polymer in which 80% of all terminals are hydrolyzable silicon groups are allowed to undergo a polymerization reaction. A curable composition containing a modified silicone polymer, a hindered amine stabilizer, an ultraviolet absorber and an anti-aging agent is described.
Patent Document 3 below relates to an isobutylene polymer having a hydrolyzable silicon group. In order to improve cracking and whitening of a cured product, a specific photocurable compound and an air oxidation curable compound (for example, dryness) are disclosed. Oil) and the addition of tertiary hindered amine light stabilizers.
本発明等の知見によれば、硬化性組成物にヒンダードアミン系光安定剤を含有させることはクラックの抑制に有効であるが、ヒンダードアミン系光安定剤が低分子量であると、硬化後に移行して、シーリング材と被着基材との接着性に悪影響を及ぼす場合がある。
またヒンダードアミン系光安定剤は、特に変成シリコーンポリマー（アクリル変性されていないもの）との相溶性に乏しく、融点以上に加熱しても、変成シリコーンポリマーに高分子量のヒンダードアミン系安定剤を溶解させるのは難しいことを知見した。
According to knowledge such as the present invention, it is effective to contain a hindered amine light stabilizer in the curable composition to suppress cracking, but if the hindered amine light stabilizer has a low molecular weight, it shifts after curing. The adhesiveness between the sealing material and the adherend substrate may be adversely affected.
In addition, hindered amine light stabilizers are particularly poorly compatible with modified silicone polymers (those that are not acrylic-modified) and can dissolve high molecular weight hindered amine stabilizers in modified silicone polymers even when heated above their melting point. Found it difficult.
本発明は前記事情に鑑みてなされたもので、変成シリコーンポリマーを含有する硬化性組成物に、高分子量のヒンダードアミン系光安定剤を良好に溶解させることができるようにすることを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to allow a high-molecular-weight hindered amine light stabilizer to be well dissolved in a curable composition containing a modified silicone polymer.
前記課題を解決するために、本発明は、数平均分子量が１，０００〜５，０００のヒンダードアミン系光安定剤を含む、液状の光安定剤組成物を製造する方法であって、水酸基価換算分子量５００〜４，０００のポリオキシアルキレン（モノ）ポリオール（Ｘ）と、前記ヒンダードアミン系光安定剤を含む混合物を、該混合物中のヒンダードアミン系光安定剤の融点以上の温度で加熱して、前記ヒンダードアミン系光安定剤を溶解させる工程を有する、光安定剤組成物の製造方法を提供する。
In order to solve the above problems, the present invention is a method for producing a liquid light stabilizer composition comprising a hindered amine light stabilizer having a number average molecular weight of 1,000 to 5,000, which is converted into a hydroxyl value. polyoxyalkylene having a molecular weight of 500 to 4,000 and (mono) polyol (X), a mixture containing the hindered amine light stabilizer and heated at hindered amine light stabilizer temperature higher than the melting point of the mixture, the Provided is a method for producing a light stabilizer composition, comprising a step of dissolving a hindered amine light stabilizer.
前記ポリオキシアルキレン（モノ）ポリオール（Ｘ）が、ポリオキシプロピレン（モノ）ポリオールであることが好ましい。
前記混合物において、前記ヒンダードアミン系光安定剤の含有量を１質量部とすると、前記ポリオキシアルキレン（モノ）ポリオール（Ｘ）の含有量が１〜５質量部であることが好ましい。
The polyoxyalkylene (mono) polyol (X) is preferably a polyoxypropylene (mono) polyol.
In the mixture, when the content of the hindered amine light stabilizer is 1 part by mass, the content of the polyoxyalkylene (mono) polyol (X) is preferably 1 to 5 parts by mass.
また本発明は、本発明の光安定剤組成物の製造方法で得られる光安定剤組成物を、加水分解性ケイ素基を有するポリオキシアルキレン重合体（Ｐ）を含む重合体含有液と混合する工程を有する、硬化性組成物の製造方法を提供する。
前記混合する際の、前記光安定剤組成物の温度が１０〜８０℃であり、かつ前記重合体（Ｐ）の温度が３０〜１００℃であることが好ましい。
Moreover, this invention mixes the light stabilizer composition obtained by the manufacturing method of the light stabilizer composition of this invention with the polymer containing liquid containing the polyoxyalkylene polymer (P) which has a hydrolysable silicon group. The manufacturing method of a curable composition which has a process is provided.
It is preferable that the temperature of the light stabilizer composition at the time of mixing is 10 to 80 ° C, and the temperature of the polymer (P) is 30 to 100 ° C.
本発明の光安定剤組成物の製造方法によれば、ポリオキシアルキレン（モノ）ポリオール（Ｘ）に、高分子量であって融点が高いヒンダードアミン系光安定剤が良好に溶解された状態で含まれている光安定剤組成物が得られる。該光安定剤組成物は、常温下でもヒンダードアミン系光安定剤の析出が生じ難く、溶解安定性に優れる。
本発明の硬化性組成物の製造方法によれば、本発明の製造方法で得られる光安定剤組成物を、加水分解性ケイ素基を有するポリオキシアルキレン重合体を含む重合体組成物と混合することにより、高分子量のヒンダードアミン系光安定剤が良好に溶解された状態で含まれている硬化性組成物が得られる。
According to the method for producing a light stabilizer composition of the present invention, the hindered amine light stabilizer having a high molecular weight and a high melting point is contained in the polyoxyalkylene (mono) polyol (X) in a well-dissolved state. A light stabilizer composition is obtained. The light stabilizer composition is excellent in dissolution stability because the hindered amine light stabilizer is hardly precipitated even at room temperature.
According to the method for producing a curable composition of the present invention, the light stabilizer composition obtained by the method of the present invention is mixed with a polymer composition containing a polyoxyalkylene polymer having a hydrolyzable silicon group. Thus, a curable composition containing a high molecular weight hindered amine light stabilizer in a well-dissolved state can be obtained.
＜ポリオキシアルキレン（モノ）ポリオール（Ｘ）＞
本発明では、分子量５００〜５，０００のポリオキシアルキレン（モノ）ポリオール（Ｘ）（本明細書において単に（モノ）ポリオール（Ｘ）ということもある。）を用いる。
本発明において（モノ）ポリオールとは、ポリオールとモノオールの総称である。
本発明において（モノ）ポリオール（Ｘ）の分子量は、水酸基価換算分子量である。該水酸基価換算分子量とは、水酸基価から換算した分子量を意味する。水酸基価と水酸基換算分子量との関係は以下の式（Ｉ）で表わされる。
水酸基換算分子量＝水酸基数×５６，１００／水酸基価・・・（Ｉ）
本明細書における水酸基価は、ＪＩＳ Ｋ １５５７−１に準拠した方法で測定した値である。
<Polyoxyalkylene (mono) polyol (X)>
In the present invention, polyoxyalkylene (mono) polyol (X) having a molecular weight of 500 to 5,000 (sometimes referred to simply as (mono) polyol (X) in the present specification) is used.
In the present invention, (mono) polyol is a general term for polyol and monool.
In the present invention, the molecular weight of the (mono) polyol (X) is a hydroxyl value converted molecular weight. The hydroxyl value-converted molecular weight means a molecular weight converted from a hydroxyl value. The relationship between the hydroxyl value and the hydroxyl equivalent molecular weight is represented by the following formula (I).
Hydroxyl equivalent molecular weight = number of hydroxyl groups × 56,100 / hydroxyl value (I)
The hydroxyl value in this specification is a value measured by a method based on JIS K1557-1.
（モノ）ポリオール（Ｘ）の分子量が５００以上であると、高分子量のヒンダードアミン系光安定剤の良好な溶解性が得られやすい。また硬化性組成物中に（モノ）ポリオール（Ｘ）を含有させることによる、貯蔵安定性の低下や、硬化物におけるブリードアウトの発生が生じにくい。（モノ）ポリオール（Ｘ）の分子量の下限値は１，０００以上が好ましい。また、（モノ）ポリオール（Ｘ）の分子量が５，０００以下であると、高分子量のヒンダードアミン系光安定剤の良好な溶解性が得られやすい。該分子量の上限値は４，０００以下が好ましく、３，５００以下がより好ましい。
（モノ）ポリオール（Ｘ）の水酸基数は１以上である。該水酸基数の上限は、光安定剤組成物の粘度の点からは４以下が好ましい。該水酸基数のより好ましい範囲は１〜３である。
When the molecular weight of the (mono) polyol (X) is 500 or more, good solubility of the high molecular weight hindered amine light stabilizer is easily obtained. Moreover, it is hard to produce the fall of storage stability and generation | occurrence | production of the bleed-out in hardened | cured material by containing (mono) polyol (X) in a curable composition. The lower limit of the molecular weight of the (mono) polyol (X) is preferably 1,000 or more. Moreover, when the molecular weight of the (mono) polyol (X) is 5,000 or less, good solubility of the high molecular weight hindered amine light stabilizer is easily obtained. The upper limit of the molecular weight is preferably 4,000 or less, and more preferably 3,500 or less.
The (mono) polyol (X) has one or more hydroxyl groups. The upper limit of the number of hydroxyl groups is preferably 4 or less from the viewpoint of the viscosity of the light stabilizer composition. A more preferable range of the number of hydroxyl groups is 1 to 3.
（モノ）ポリオール（Ｘ）は、触媒の存在下で、水酸基を有する開始剤にアルキレンオキシドを開環付加重合させて得られるポリエーテルポリオールである。公知の触媒を用い、公知の方法で製造できる。市販品からも入手可能である。
アルキレンオキシドは、炭素数２〜４のアルキレンオキシドが好ましい。具体例としては、エチレンオキシド、プロピレンオキシド、ブチレンオキシド等が挙げられる。アルキレンオキシドは１種を用いてもよく、２種以上を用いてもよい。アルキレンオキシドを２種以上用いる場合、開始剤へのアルキレンオキシドの開環付加重合は、ランダム重合、ブロック重合、ランダム重合とブロック重合の併用いずれでもよい。
アルキレンオキシドは、特に変成シリコーンポリマーとの相溶性の点でプロピレンオキシドが好ましい。すなわちポリオキシプロピレン（モノ）ポリオールが特に好ましい。
(Mono) polyol (X) is a polyether polyol obtained by ring-opening addition polymerization of alkylene oxide to an initiator having a hydroxyl group in the presence of a catalyst. It can be produced by a known method using a known catalyst. It is also available from commercial products.
The alkylene oxide is preferably an alkylene oxide having 2 to 4 carbon atoms. Specific examples include ethylene oxide, propylene oxide, butylene oxide and the like. One type of alkylene oxide may be used, or two or more types may be used. When two or more alkylene oxides are used, the ring-opening addition polymerization of alkylene oxide to the initiator may be any of random polymerization, block polymerization, and combination of random polymerization and block polymerization.
The alkylene oxide is preferably propylene oxide, particularly in terms of compatibility with the modified silicone polymer. That is, polyoxypropylene (mono) polyol is particularly preferable.
（モノ）ポリオール（Ｘ）は１種を単独で用いてもよく、２種以上を併用してもよい。２種以上を混合して用いる場合、混合前の各（モノ）ポリオール（Ｘ）が上記の好ましい条件を満たすことが好ましい。
（モノ）ポリオール（Ｘ）は、硬化性組成物に可塑剤として添加され得る成分であるため、光安定剤組成物を調製するための溶媒として使用した後、これを除去することなく、そのまま硬化性組成物に含有させることができる。
(Mono) polyol (X) may be used individually by 1 type, and may use 2 or more types together. When mixing and using 2 or more types, it is preferable that each (mono) polyol (X) before mixing satisfy | fills said preferable conditions.
Since the (mono) polyol (X) is a component that can be added as a plasticizer to the curable composition, it is used as a solvent for preparing the light stabilizer composition and then cured as it is without being removed. Can be contained in the composition.
＜ヒンダードアミン系光安定剤＞
ヒンダードアミン系光安定剤は、ＨＡＬＳ（Ｈｉｎｄｅｒｄ Ａｍｉｎｅ Ｌｉｇｈｔ Ｓｔａｂｉｌｉｚｅｒ）とも呼ばれ、化学構造式に２，２，６，６−テトラメチルピペリジン骨格（窒素原子に結合する水素原子が置換されていてもよい。）を含む化合物である。
本発明では、分子量が１，０００〜５，０００である高分子量タイプのヒンダードアミン系光安定剤を用いる。該分子量は１，５００〜３，５００が好ましく、１，９００〜２，６００がより好ましい。
ヒンダードアミン系光安定剤は、各種の化合物が市販されており、本発明では、市販品の中から上記分子量を満たすものを適宜選択して用いることができる。
分子量が１，０００以上であると、硬化性組成物の硬化後に移行し難くブリードアウトが生じにくい。また分子量が高いほど、良好な耐久性が得られやすく、例えば硬化性組成物の硬化物が薄層の場合にも優れた耐候性が得られやすい。分子量が５，０００を超えるものは入手が難しい。
分子量が１，０００〜５，０００であるヒンダードアミン系光安定剤は、融点が比較的高く、通常５５℃以上である。市販品は粉体である。
<Hindered amine light stabilizer>
The hindered amine light stabilizer is also referred to as HALS (Hindered Amine Light Stabilizer), and a 2,2,6,6-tetramethylpiperidine skeleton (a hydrogen atom bonded to a nitrogen atom may be substituted) in the chemical structural formula. ).
In the present invention, a high molecular weight type hindered amine light stabilizer having a molecular weight of 1,000 to 5,000 is used. The molecular weight is preferably 1,500 to 3,500, more preferably 1,900 to 2,600.
As the hindered amine light stabilizer, various compounds are commercially available, and in the present invention, those satisfying the molecular weight can be appropriately selected from commercially available products.
When the molecular weight is 1,000 or more, the curable composition hardly migrates after curing and bleed-out hardly occurs. Further, the higher the molecular weight, the easier it is to obtain good durability. For example, even when the cured product of the curable composition is a thin layer, excellent weather resistance is easily obtained. Those having a molecular weight exceeding 5,000 are difficult to obtain.
A hindered amine light stabilizer having a molecular weight of 1,000 to 5,000 has a relatively high melting point and is usually 55 ° C. or higher. The commercial product is a powder.
市販品から入手できる、好適なヒンダードアミン系光安定剤の具体例（いずれも商品名）としては、
ＬＡ−６３Ｐ（ＡＤＥＫＡ社製、分子量約２，０００、融点８５〜１０５℃）、
ＬＡ−６８ＬＤ（ＡＤＥＫＡ社製、分子量約１，９００、融点８０〜１１０℃）、
ＣＨＩＭＡＳＳＯＲＢ９４４ＦＤＬ（ＢＡＳＦ社製、分子量２，０００〜３，１００、融点１００〜１３５℃）、
ＣＨＩＭＡＳＳＯＲＢ２０２０ＦＤＬ（ＢＡＳＦ社製、分子量２，６００〜３，４００、融点１３０〜１３６℃）、
ＣＨＩＭＡＳＳＯＲＢ１１９ＦＬ（ＢＡＳＦ社製、分子量約２，３００、融点１１５〜１５０℃）、
ＴＩＮＵＶＩＮ６２２ＬＤ（ＢＡＳＦ社製、分子量３，１００〜４，０００、融点５５〜７０℃）等が挙げられる。
ヒンダードアミン系光安定剤は１種を単独で用いてもよく、２種以上を併用してもよい。
As specific examples (all trade names) of suitable hindered amine light stabilizers available from commercial products,
LA-63P (manufactured by ADEKA, molecular weight of about 2,000, melting point 85 to 105 ° C.),
LA-68LD (manufactured by ADEKA, molecular weight about 1,900, melting point 80-110 ° C.),
CHIMASSORB 944FDL (manufactured by BASF, molecular weight 2,000-3,100, melting point 100-135 ° C.),
CHIMASSORB2020FDL (manufactured by BASF, molecular weight 2,600-3,400, melting point 130-136 ° C),
CHIMASSORB 119FL (manufactured by BASF, molecular weight of about 2,300, melting point 115 to 150 ° C.),
TINUVIN622LD (manufactured by BASF, molecular weight 3,100 to 4,000, melting point 55 to 70 ° C.) and the like.
A hindered amine light stabilizer may be used individually by 1 type, and may use 2 or more types together.
＜光安定剤組成物の製造方法＞
本発明では、（モノ）ポリオール（Ｘ）とヒンダードアミン系光安定剤とが混合された状態で、ヒンダードアミン系光安定剤の融点よりも高い温度に加熱することにより、ヒンダードアミン系光安定剤を（モノ）ポリオール（Ｘ）中に溶解させて、光安定剤組成物を得る。
<Method for producing light stabilizer composition>
In the present invention, in a state where the (mono) polyol (X) and the hindered amine light stabilizer are mixed, the hindered amine light stabilizer is heated to a temperature higher than the melting point of the hindered amine light stabilizer. ) Dissolve in polyol (X) to obtain a light stabilizer composition.
まず、粉体であるヒンダードアミン系光安定剤を、液状である（モノ）ポリオール（Ｘ）に添加して混合し、混合物とする。この混合の操作において加熱を行う必要はなく、常温下で混合することができる。
ヒンダードアミン系光安定剤の良好な溶解性が得られやすい点で、該混合物中のヒンダードアミン系光安定剤の含有量を１質量部とすると、（モノ）ポリオール（Ｘ）の含有量は１質量部以上が好ましく、１．５質量部以上がより好ましい。
一方、ヒンダードアミン系光安定剤の含有量に対して、（モノ）ポリオール（Ｘ）の含有量が多すぎると、得られた光安定剤組成物を硬化性組成物に添加する際に、該硬化性組成物におけるヒンダードアミン系光安定剤と（モノ）ポリオール（Ｘ）との配合比率を好ましい比率に調整するのが難しくなる。混合物中のヒンダードアミン系光安定剤の含有量を１質量部とすると、（モノ）ポリオール（Ｘ）の含有量は５質量部以下が好ましく、３質量部以下がより好ましい。
該（モノ）ポリオール（Ｘ）とヒンダードアミン系光安定剤の混合物には、ヒンダードアミン系光安定剤の溶解を妨げない範囲で、（モノ）ポリオール（Ｘ）およびヒンダードアミン系光安定剤以外の他の成分を適宜含有させてもよい。該混合物中における（モノ）ポリオール（Ｘ）とヒンダードアミン系光安定剤の合計の含有量は６０質量％以上が好ましく、８０質量％以上がより好ましく、１００質量％が最も好ましい。
First, a powdered hindered amine light stabilizer is added to a liquid (mono) polyol (X) and mixed to obtain a mixture. It is not necessary to perform heating in this mixing operation, and mixing can be performed at room temperature.
When the content of the hindered amine light stabilizer in the mixture is 1 part by mass, the content of the (mono) polyol (X) is 1 part by mass in that good solubility of the hindered amine light stabilizer is easily obtained. The above is preferable, and 1.5 parts by mass or more is more preferable.
On the other hand, when the content of the (mono) polyol (X) is too much relative to the content of the hindered amine light stabilizer, the curing is performed when the obtained light stabilizer composition is added to the curable composition. It becomes difficult to adjust the blending ratio of the hindered amine light stabilizer and the (mono) polyol (X) in the composition to a preferred ratio. When the content of the hindered amine light stabilizer in the mixture is 1 part by mass, the content of the (mono) polyol (X) is preferably 5 parts by mass or less, and more preferably 3 parts by mass or less.
In the mixture of the (mono) polyol (X) and the hindered amine light stabilizer, other components other than the (mono) polyol (X) and the hindered amine light stabilizer as long as they do not hinder the dissolution of the hindered amine light stabilizer. May be contained as appropriate. The total content of the (mono) polyol (X) and the hindered amine light stabilizer in the mixture is preferably 60% by mass or more, more preferably 80% by mass or more, and most preferably 100% by mass.
次いで、得られた混合物を、該混合物中のヒンダードアミン系光安定剤の融点以上の温度で加熱して、該ヒンダードアミン系光安定剤を溶解させる。該加熱は、所定の加熱温度にまで昇温し、該加熱温度に所定時間保持する方法で行うことが好ましい。このとき、窒素雰囲気下で攪拌すると、より均一に、かつより確実に溶解させることができる。または、ヒンダードアミン系光安定剤が溶解するならば、攪拌を行わなくともよい。例えば該混合物を、加温槽中に静置させた状態で、前記昇温および保持を行い、所定の保持時間が経過したら、加温槽から取り出す方法で行うことができる。
ヒンダードアミン系光安定剤の融点以上とは、融点に範囲がある場合は下限値の温度以上であることを意味し、混合物中に融点が異なる２種以上のヒンダードアミン系光安定剤が存在する場合は、これらの融点（範囲がある場合はその下限値を採用する）のうちで最も低い温度以上であることを意味する。
加熱温度が高すぎると（モノ）ポリオール（Ｘ）の酸化劣化の可能性があるため、加熱温度の上限は、かかる不都合が生じない温度以下とする。例えば１６０℃以下が好ましく、１５０℃以下がより好ましい。
加熱温度に保持する時間（保持時間）は、ヒンダードアミン系光安定剤が良好に溶解する時間であれはよく、必要以上に長くすることは（モノ）ポリオール（Ｘ）の酸化の点で好ましくない。例えば１０〜６０分程度が好ましく、２０〜３０分程度がより好ましい。
Next, the obtained mixture is heated at a temperature equal to or higher than the melting point of the hindered amine light stabilizer in the mixture to dissolve the hindered amine light stabilizer. The heating is preferably performed by a method in which the temperature is raised to a predetermined heating temperature and held at the heating temperature for a predetermined time. At this time, if the mixture is stirred in a nitrogen atmosphere, it can be dissolved more uniformly and more reliably. Alternatively, if the hindered amine light stabilizer is dissolved, the stirring may not be performed. For example, the temperature can be raised and held in a state where the mixture is allowed to stand in a heating tank. When a predetermined holding time has elapsed, the mixture can be taken out from the heating tank.
More than the melting point of the hindered amine light stabilizer means that if the melting point has a range, it means the temperature of the lower limit value or more, and when two or more hindered amine light stabilizers having different melting points exist in the mixture , It means that the melting point is higher than the lowest temperature among these melting points (the lower limit is adopted when there is a range).
If the heating temperature is too high, the (mono) polyol (X) may be oxidized and deteriorated, so the upper limit of the heating temperature is set to a temperature at which such inconvenience does not occur. For example, 160 ° C. or lower is preferable, and 150 ° C. or lower is more preferable.
The time for holding at the heating temperature (holding time) may be a time for the hindered amine light stabilizer to dissolve well, and it is not preferable to make it longer than necessary from the viewpoint of oxidation of the (mono) polyol (X). For example, about 10 to 60 minutes is preferable, and about 20 to 30 minutes is more preferable.
（モノ）ポリオール（Ｘ）とヒンダードアミン系光安定剤の混合物を加熱して得られた光安定剤組成物は、加熱終了後、直ちに次工程に供してもよく、所望の温度まで降温してから次工程に供してもよく、常温で保存することもできる。加熱終了後は、積極的に冷却を行ってもよいが、混合物の均一性保持の点では放冷により緩やかに降温することが好ましい。 The light stabilizer composition obtained by heating the mixture of the (mono) polyol (X) and the hindered amine light stabilizer may be used for the next step immediately after the heating, and after the temperature is lowered to a desired temperature. You may use for the following process and can also preserve | save at normal temperature. After the heating is completed, the cooling may be positively carried out, but it is preferable that the temperature is gradually lowered by cooling in terms of maintaining the uniformity of the mixture.
こうして得られる光安定剤組成物は、後述の実施例に示されるように、常温まで降温してもヒンダードアミン系光安定剤の析出は見られず、良好な溶解安定性を有する。したがって、常温でも、高分子量で融点が高いヒンダードアミン系光安定剤が、液状の（モノ）ポリオール（Ｘ）中に均一に溶解した状態で含まれている光安定剤組成物が得られる。
かかる良好な溶解性が得られる理由は明らかではないが、（モノ）ポリオール（Ｘ）が高分子量ヒンダート゛アミン系光安定剤とほぼ同程度の分子量を有すること、および（モノ）ポリオール（Ｘ）が水酸基を有するため、ヒンダート゛アミン系光安定剤との間で水素結合が生じやすいことが、両者の相溶性に寄与すると考えられる。
また該光安定剤組成物は（モノ）ポリオール（Ｘ）を含むため、これを硬化性組成物に含有させることにより、ヒンダードアミン系光安定剤および（モノ）ポリオール（Ｘ）が配合された硬化性組成物が得られる。（モノ）ポリオール（Ｘ）は、硬化性組成物において可塑剤として機能する化合物であり、粘度低減、および作業性の向上に寄与する。
The light stabilizer composition thus obtained has good dissolution stability, as shown in the examples below, in which no hindered amine light stabilizer is precipitated even when the temperature is lowered to room temperature. Therefore, a light stabilizer composition containing a hindered amine light stabilizer having a high molecular weight and a high melting point evenly dissolved in a liquid (mono) polyol (X) can be obtained.
The reason why such good solubility is obtained is not clear, but the (mono) polyol (X) has a molecular weight almost equal to that of the high molecular weight hindered amine light stabilizer, and the (mono) polyol (X) has a hydroxyl group. Therefore, it is considered that the fact that hydrogen bonds are likely to occur between the hindered amine light stabilizers contributes to the compatibility of the two.
Moreover, since this light stabilizer composition contains (mono) polyol (X), the sclerosing | hardenability by which this hindered amine type light stabilizer and (mono) polyol (X) were mix | blended by making this contain in a curable composition. A composition is obtained. The (mono) polyol (X) is a compound that functions as a plasticizer in the curable composition, and contributes to viscosity reduction and workability improvement.
＜硬化性組成物の製造方法＞
こうして得られた光安定剤組成物を、加水分解性ケイ素基を有するポリオキシアルキレン重合体（Ｐ）（本明細書において、単に重合体（Ｐ）ということもある。）を含む重合体含有液と混合する工程を経て硬化性組成物を製造する。これにより、重合体（Ｐ）を含有するとともに、高分子量のヒンダードアミン系光安定剤が良好に溶解された状態で含まれている硬化性組成物が得られる。
該硬化性組成物は、（モノ）ポリオール（Ｘ）およびヒンダードアミン系光安定剤を含有しており、硬化物において、優れた耐候性、特に良好なクラック抑制効果および白化抑制効果が得られる。
重合体（Ｐ）およびその他の硬化性組成物の構成成分については後述する。
<Method for producing curable composition>
The light stabilizer composition thus obtained is a polymer-containing liquid containing a polyoxyalkylene polymer (P) having a hydrolyzable silicon group (sometimes simply referred to as polymer (P) in the present specification). A curable composition is manufactured through the process of mixing with. Thereby, while containing a polymer (P), the curable composition containing the high molecular weight hindered amine light stabilizer in the well-dissolved state is obtained.
The curable composition contains (mono) polyol (X) and a hindered amine light stabilizer, and provides excellent weather resistance, particularly good crack suppression effect and whitening suppression effect in the cured product.
The components of the polymer (P) and other curable compositions will be described later.
硬化性組成物におけるヒンダードアミン系光安定剤の全含有量（２種以上含む場合はその合計の含有量）は、重合体（Ｐ）の１００質量部に対して０．１〜２．０質量部が好ましく、０．２〜１．０質量部がより好ましい。該ヒンダードアミン系光安定剤の含有量が上記範囲の下限値以上であると、充分な耐候性向上効果およびクラック防止効果が得られやすい。上記範囲の上限値以下であるとブリードが良好に抑えられ、被着基材との接着性が損なわれない。
硬化性組成物における（モノ）ポリオール（Ｘ）の全含有量（２種以上含む場合はその合計の含有量）は、重合体（Ｐ）の１００質量部に対して０．１〜１０質量部が好ましく、０．２〜５質量部がより好ましい。
該（モノ）ポリオール（Ｘ）の使用量が上記範囲の下限値以上であると、変成シリコーンポリマーへの高分子量のヒンダードアミン系安定剤の溶解性を損なわず、上記範囲の上限値以下であるとブリードによる接着性の低下や、耐汚染性の低下が生じ難い。
The total content of hindered amine light stabilizers in the curable composition (the total content when two or more are included) is 0.1 to 2.0 parts by mass with respect to 100 parts by mass of the polymer (P). Is preferable, and 0.2 to 1.0 part by mass is more preferable. When the content of the hindered amine light stabilizer is not less than the lower limit of the above range, a sufficient weather resistance improving effect and crack preventing effect can be easily obtained. If the amount is not more than the upper limit of the above range, the bleed can be satisfactorily suppressed and the adhesion with the adherend substrate is not impaired.
The total content of (mono) polyol (X) in the curable composition (the total content when two or more are included) is 0.1 to 10 parts by mass with respect to 100 parts by mass of the polymer (P). Is preferable, and 0.2-5 mass parts is more preferable.
When the amount of the (mono) polyol (X) is not less than the lower limit of the above range, the solubility of the high molecular weight hindered amine stabilizer in the modified silicone polymer is not impaired and is not more than the upper limit of the above range. Decrease in adhesion due to bleed and contamination resistance are unlikely to occur.
硬化性組成物の製造方法は、まず光安定剤組成物と、固形分（充填材等）を含まない重合体含有液とを混合して重合体混合液を得、必要に応じて濾過を行った後、該重合体混合液と残りの成分（重合体（Ｐ）は含まない）を混合して硬化性組成物を得る方法が好ましい。
この場合、重合体含有液として、液状である重合体（Ｐ）のみからなる液、または重合体（Ｐ）と、硬化性組成物中の固形分以外の構成成分（光安定剤組成物に含まれている成分および重合体（Ｐ）を除く）の一部または全部とからなる液を用いる。
The curable composition is produced by first mixing the light stabilizer composition with a polymer-containing liquid that does not contain solids (such as fillers) to obtain a polymer mixed liquid, and performing filtration as necessary. Then, a method of obtaining a curable composition by mixing the polymer mixture and the remaining components (excluding the polymer (P)) is preferred.
In this case, as a polymer-containing liquid, a liquid consisting only of a liquid polymer (P), or a polymer (P) and constituents other than solid content in the curable composition (included in the light stabilizer composition) The liquid which consists of one part or all of the component and polymer (P) currently used is used.
硬化性組成物におけるヒンダードアミン系光安定剤と（モノ）ポリオール（Ｘ）の配合比率を好ましい比率に調整するために、光安定剤組成物に含まれている（モノ）ポリオール（Ｘ）のほかに、（モノ）ポリオール（Ｘ）の追加添加が必要な場合には、追加分の（モノ）ポリオール（Ｘ）を重合体含有液に含有させることが、ヒンダードアミン系光安定剤のより良好な溶解安定性が得られやすい点で好ましい。
硬化性組成物に後述の乾性油を添加する場合は、該乾性油の一部または全部、好ましくは全部を、重合体含有液に含有させることが、ヒンダードアミン系光安定剤のより良好な溶解安定性が得られやすい点で好ましい。本発明者等の知見によれば、乾性油も高分子量ヒンダードアミン系光安定剤と良好な相溶性を有する。
また、硬化性組成物に後述のモジュラス調整剤を添加する場合は、該モジュラス調整剤の一部または全部、好ましくは全部を、重合体含有液に含有させることが、より正確な秤量、均一な混合を実現しやすい点で好ましい。
In addition to the (mono) polyol (X) contained in the light stabilizer composition, in order to adjust the blending ratio of the hindered amine light stabilizer and the (mono) polyol (X) in the curable composition to a preferred ratio When additional addition of (mono) polyol (X) is required, it is better to make the polymer-containing liquid contain an additional amount of (mono) polyol (X) for better dissolution stability of the hindered amine light stabilizer. It is preferable in that it can be easily obtained.
In the case where a drying oil described later is added to the curable composition, it is preferable that a part or all of the drying oil, preferably all of the drying oil, is contained in the polymer-containing liquid. It is preferable in that it can be easily obtained. According to the knowledge of the present inventors, drying oil also has good compatibility with high molecular weight hindered amine light stabilizers.
In addition, when a modulus modifier described later is added to the curable composition, it is more accurate and uniform that the polymer-containing liquid contains a part or all, preferably all, of the modulus modifier. It is preferable in terms of easy mixing.
光安定剤組成物と重合体含有液とを混合する際、該光安定剤組成物の温度は１０〜８０℃が好ましく、２０〜４０℃がより好ましい。該光安定剤組成物の温度が上記範囲の下限値以上であると添加時の作業性がよく、上限値以下であると加温の手間が少なくてすみ、また光安定剤組成物を取り扱いやすい。
また、重合体含有液の温度は３０〜１００℃であることが好ましく、４０〜６０℃であることがより好ましい。重合体含有液の温度が上記範囲の下限値以上であると混合性がよく、上限値以下であると加熱時間を短縮でき、増粘の懸念を抑えられる。
When mixing the light stabilizer composition and the polymer-containing liquid, the temperature of the light stabilizer composition is preferably 10 to 80 ° C, more preferably 20 to 40 ° C. When the temperature of the light stabilizer composition is not less than the lower limit of the above range, workability at the time of addition is good, and when it is not more than the upper limit, labor for heating is reduced, and the light stabilizer composition is easy to handle. .
Moreover, it is preferable that the temperature of a polymer containing liquid is 30-100 degreeC, and it is more preferable that it is 40-60 degreeC. When the temperature of the polymer-containing liquid is equal to or higher than the lower limit value in the above range, the mixing property is good, and when it is equal to or lower than the upper limit value, the heating time can be shortened and the concern about thickening can be suppressed.
なお、重合体含有液として、硬化性組成物の構成成分のうち、光安定剤組成物に含まれている成分を除いた残りの成分の全部（重合体（Ｐ）を含む。）を含む液を用いてもよく、この場合は、光安定剤組成物と重合体含有液との混合物が硬化性組成物となる。
固形分への一成分の不均一な吸着防止の点では、前述のように、予め光安定剤組成物と、固形分を含まない重合体含有液とを混合する方法が好ましい。
In addition, as a polymer containing liquid, the liquid containing all the remaining components (a polymer (P) is included) except the component contained in the light stabilizer composition among the structural components of a curable composition. In this case, a mixture of the light stabilizer composition and the polymer-containing liquid becomes a curable composition.
From the viewpoint of preventing uneven adsorption of one component to the solid content, a method of previously mixing the light stabilizer composition and the polymer-containing liquid not containing the solid content is preferable as described above.
＜重合体（Ｐ）＞
重合体（Ｐ）は、主鎖がポリオキシアルキレン鎖であり、分子鎖末端に下式（１）で表される加水分解性ケイ素基を有する。
−ＳｉＸａＲ１ ３−ａ ・・・（１）
（式（１）中、Ｒ１は炭素数１〜２０の置換もしくは非置換の１価の有機基であり、Ｘは水酸基または加水分解性基であり、ａは１、２または３である。ただし、Ｒ１が複数個存在するときは同じでも異なってもよく、Ｘが複数個存在するときは同じでも異なってもよい。）
<Polymer (P)>
The main chain of the polymer (P) is a polyoxyalkylene chain, and has a hydrolyzable silicon group represented by the following formula (1) at the end of the molecular chain.
-SiX a R 1 3-a (1)
(In Formula (1), R 1 is a substituted or unsubstituted monovalent organic group having 1 to 20 carbon atoms, X is a hydroxyl group or a hydrolyzable group, and a is 1, 2 or 3. However, when a plurality of R 1 are present, they may be the same or different, and when a plurality of X are present, they may be the same or different.)
式（１）中のＸとしての加水分解性基としては、例えばハロゲン原子、アルコキシ基、アシルオキシ基、アミド基、アミノ基、アミノオキシ基、ケトキシメート基、ヒドリド基などが挙げられる。
これらのうち炭素原子を有する加水分解性基の炭素数は６以下が好ましく、４以下が特に好ましい。好ましいＸは炭素数４以下の低級アルコキシ基であり、特にメトキシ基、エトキシ基、プロポキシ基またはプロペニルオキシ基が好ましい。一分子中にＸが複数個存在するとき、それらは互いい同じでも異なってもよい。
式（１）中のａは１、２または３である。
式（１）中のＲ1は、好ましくは炭素数８以下のアルキル基、フェニル基またはフルオロアルキル基である。特に好ましくは、メチル基、エチル基、プロピル基、ブチル基、ヘキシル基、シクロヘキシル基、フェニル基等である。Ｒ１が複数個存在するとき、それらは互いに同じでも異なってもよい。
Examples of the hydrolyzable group as X in the formula (1) include a halogen atom, an alkoxy group, an acyloxy group, an amide group, an amino group, an aminooxy group, a ketoximate group, and a hydride group.
Among these, the number of carbon atoms of the hydrolyzable group having a carbon atom is preferably 6 or less, and particularly preferably 4 or less. X is preferably a lower alkoxy group having 4 or less carbon atoms, particularly preferably a methoxy group, an ethoxy group, a propoxy group or a propenyloxy group. When a plurality of X are present in one molecule, they may be the same or different from each other.
A in the formula (1) is 1, 2 or 3.
R 1 in formula (1) is preferably an alkyl group having 8 or less carbon atoms, a phenyl group or a fluoroalkyl group. Particularly preferred are methyl group, ethyl group, propyl group, butyl group, hexyl group, cyclohexyl group, phenyl group and the like. When a plurality of R 1 are present, they may be the same as or different from each other.
重合体（Ｐ）は、公知の方法で製造できる。市販品からも入手可能である。
例えば、まず、触媒の存在下でポリヒドロキシ化合物などの開始剤にアルキレンオキシドを開環付加重合させて、末端が水酸基である原料ポリオキシアルキレンポリオールを製造し、その末端に加水分解性ケイ素基を導入することにより重合体（Ｐ）が得られる。
原料ポリオキシアルキレンポリオールの官能基数（重合体（Ｐ）の官能基数と同じ）は２以上が好ましく、硬化物特性として柔軟性を強調したい場合には２または３が特に好ましく、接着性や硬化性を強調したい場合には３〜８が特に好ましい。
The polymer (P) can be produced by a known method. It is also available from commercial products.
For example, first, an alkylene oxide is subjected to ring-opening addition polymerization with an initiator such as a polyhydroxy compound in the presence of a catalyst to produce a raw material polyoxyalkylene polyol having a terminal hydroxyl group, and a hydrolyzable silicon group is formed at the terminal. By introducing the polymer (P), a polymer (P) is obtained.
The number of functional groups of the raw material polyoxyalkylene polyol (same as the number of functional groups of the polymer (P)) is preferably 2 or more, and 2 or 3 is particularly preferable when it is desired to emphasize flexibility as a cured product characteristic. 3 to 8 is particularly preferable when emphasizing the above.
原料ポリオキシアルキレンポリオールに加水分解性ケイ素基を導入する方法は、公知の手法を用いることができる。例えば下記（イ）〜（ニ）の方法を用いることができる。
［方法（イ）］
原料ポリオキシアルキレンポリオールの末端にオレフィン基を導入したものと、下式（２）で表されるヒドロシリル化合物を反応させることにより、加水分解性ケイ素基を導入できる。
ＨＳｉＸａ Ｒ１ ３−ａ ・・・（２）
（式（２）中、Ｒ1 、Ｘ、ａは前記に同じ。）
原料ポリオキシアルキレンポリオールにオレフィン基を導入する方法としては、例えば、水酸基と反応する官能基およびオレフィン基を有する化合物を、ポリオキシアルキレンポリオールの水酸基に反応させる方法、または開始剤にアルキレンオキシドを開環付加重合する際に、アリルグリシジルエーテルなどのオレフィン基含有エポキシ化合物を添加して共重合させることにより、ポリオキシアルキレンポリオールの末端にオレフィン基（例えばアリル基）が導入されたアリル基変性ポリオキシアルキレンポリオールを生成する方法が挙げられる。
As a method for introducing a hydrolyzable silicon group into the raw material polyoxyalkylene polyol, a known method can be used. For example, the following methods (a) to (d) can be used.
[Method (I)]
A hydrolyzable silicon group can be introduced by reacting a raw polyoxyalkylene polyol with an olefin group introduced at the end thereof and a hydrosilyl compound represented by the following formula (2).
HSiX a R 1 3-a (2)
(In formula (2), R 1 , X and a are the same as above.)
Examples of the method of introducing an olefin group into the raw material polyoxyalkylene polyol include a method of reacting a compound having a functional group that reacts with a hydroxyl group and an olefin group with the hydroxyl group of the polyoxyalkylene polyol, or an alkylene oxide is opened as an initiator. In the cycloaddition polymerization, an allyl group-modified polyoxy having an olefin group (for example, allyl group) introduced at the terminal of the polyoxyalkylene polyol by adding an olefin group-containing epoxy compound such as allyl glycidyl ether for copolymerization. The method of producing | generating an alkylene polyol is mentioned.
［方法（ロ）］
イソシアネート基および式（１）で表される加水分解性ケイ素基を有する化合物と、原料ポリオキシアルキレンポリオールを反応させる方法。
［方法（ハ）］
原料ポリオキシアルキレンポリオールとトリレンジイソシアネートなどのポリイソシアネート化合物を反応させてイソシアネート基末端とした後、該イソシアネート基に下式（３）で表されるケイ素化合物のＷ基を反応させる方法。
Ｒ１ ３−ａ−ＳｉＸａ−Ｒ２Ｗ・・・（３）
ただし、式（３）中Ｒ１、Ｘ、ａは前記に同じ、Ｒ２は２価の有機基、Ｗは水酸基、カルボキシル基、メルカプト基およびアミノ基（１級または２級）から選ばれた活性水素含有基である。
［方法（ニ）］
原料ポリオキシアルキレンポリオールの末端にオレフィン基を導入した化合物の不飽和基と、上式（３）におけるＷがメルカプト基である化合物のメルカプト基とを反応させる方法。
[Method (b)]
A method of reacting a raw material polyoxyalkylene polyol with a compound having an isocyanate group and a hydrolyzable silicon group represented by formula (1).
[Method (C)]
A method in which a raw material polyoxyalkylene polyol and a polyisocyanate compound such as tolylene diisocyanate are reacted to form an isocyanate group terminal, and then the W group of the silicon compound represented by the following formula (3) is reacted with the isocyanate group.
R 1 3-a- SiX a -R 2 W (3)
However, in formula (3), R 1 , X, and a are the same as above, R 2 is a divalent organic group, W is selected from a hydroxyl group, a carboxyl group, a mercapto group, and an amino group (primary or secondary). An active hydrogen-containing group.
[Method (d)]
A method of reacting an unsaturated group of a compound in which an olefin group is introduced at the terminal of a raw material polyoxyalkylene polyol with a mercapto group of a compound in which W in the above formula (3) is a mercapto group.
原料ポリオキシアルキレンポリオールの全末端のうち、加水分解性ケイ素基が導入された末端の割合（単位：モル％）をシリル基変性率という。
重合体（Ｐ）のシリル基変性率は５０〜８５モル％が好ましく、７０〜７５モル％がより好ましい。上記範囲の下限値以上であると硬化物のタックが少なく、十分な強度を発現でき、上限値以下であると十分な伸び特性が得られる。
重合体（Ｐ）の数平均分子量は、硬化性組成物の用途にもよるが、例えば１万〜１０万が好ましく、１万〜３万がより好ましい。上記範囲の下限値以上であると十分な伸び特性が得られ、上限値以下であると粘度が低く抑えられ、十分な強度を発現できる。
本明細書における数平均分子量（Ｍｎ）および質量平均分子量（Ｍｗ）は、分子量既知の標準ポリスチレン試料を用いて作成した検量線を用い、ゲルパーミエーションクロマトグラフィーで測定することによって得られるポリスチレン換算分子量である。
The ratio (unit: mol%) of the terminal in which the hydrolyzable silicon group is introduced among all terminals of the raw material polyoxyalkylene polyol is referred to as silyl group modification rate.
The silyl group modification rate of the polymer (P) is preferably 50 to 85 mol%, more preferably 70 to 75 mol%. When the amount is not less than the lower limit of the above range, the cured product has little tack and can exhibit sufficient strength, and when it is not more than the upper limit, sufficient elongation characteristics can be obtained.
The number average molecular weight of the polymer (P) depends on the use of the curable composition, but is preferably, for example, 10,000 to 100,000, more preferably 10,000 to 30,000. When it is at least the lower limit of the above range, sufficient elongation characteristics are obtained, and when it is at most the upper limit, the viscosity is kept low and sufficient strength can be exhibited.
The number average molecular weight (Mn) and the mass average molecular weight (Mw) in this specification are polystyrene-converted molecular weights obtained by measuring with gel permeation chromatography using a standard curve prepared using a standard polystyrene sample with a known molecular weight. It is.
＜重合体（Ｐ）以外の成分＞
本発明の硬化性組成物は、重合体（Ｐ）の他に、硬化性組成物において公知の成分を適宜含むことができる。例えば硬化触媒、充填材、可塑剤、安定剤、添加剤、溶剤、着色剤等を用いることができる。
<Components other than the polymer (P)>
The curable composition of this invention can contain a well-known component suitably in a curable composition other than a polymer (P). For example, a curing catalyst, a filler, a plasticizer, a stabilizer, an additive, a solvent, a colorant, and the like can be used.
［硬化触媒］
硬化触媒は、重合体（Ｐ）の加水分解反応を触媒する化合物であれば特に限定されず、金属（錫、ビスマス等）と有機酸との塩（オクチル酸、オクテン酸、ナフテン酸等）；有機金属錯体等が好ましい。有機酸塩は、オクチル酸第一錫、トリス（２−エチルヘキサン酸）ビスマス等が好ましい。
硬化触媒の使用量は、重合体（Ｐ）の１００質量部に対して、０．０１〜１５．０質量部が好ましく、０．１〜１０質量部がより好ましい。１種を単独で用いてもよく、２種以上併用してもよい。
[Curing catalyst]
The curing catalyst is not particularly limited as long as it is a compound that catalyzes the hydrolysis reaction of the polymer (P), and a salt of a metal (tin, bismuth, etc.) and an organic acid (octyl acid, octenoic acid, naphthenic acid, etc.); Organometallic complexes are preferred. The organic acid salt is preferably stannous octylate, bismuth tris (2-ethylhexanoate), or the like.
0.01-15.0 mass parts is preferable with respect to 100 mass parts of a polymer (P), and, as for the usage-amount of a curing catalyst, 0.1-10 mass parts is more preferable. 1 type may be used independently and may be used together 2 or more types.
［助触媒］
硬化触媒と助触媒を併用してもよい。助触媒は、アミン、カルボン酸、またはリン酸が好ましく、硬化性組成物の速硬化性と硬化物の機械物性との観点から、アミンが特に好ましい。
アミンは、特に限定されず、第１級アミンが好ましい。アミンの具体例としては、ブチルアミン、ヘキシルアミン、オクチルアミン、デシルアミン、ラウリルアミン、Ｎ、Ｎ−ジメチルオクチルアミン等の脂肪族モノアミン；エチレンジアミン、ヘキサメチレンジアミン、ジエチレントリアミン、トリエチレンテトラミン、テトラエチレンペンタミン等の脂肪族ポリアミン；芳香族アミン；アルカノールアミン；Ｎ−（２−アミノエチル）−３−アミノプロピルトリメトキシシラン、３−アミノプロピルトリメトキシシラン等の加水分解性シリル基を有するアミンが挙げられる。助触媒は１種を単独で用いてもよく、２種以上併用してもよい。なかでも、オクチル酸第一錫とラウリルアミンの併用が好ましい。
助触媒は、重合体（Ｐ）の１００質量部に対して、０．０１〜１５質量部を用いるのが好ましく、０．１〜５質量部を用いるのが特に好ましい。
[Cocatalyst]
A curing catalyst and a co-catalyst may be used in combination. The cocatalyst is preferably an amine, carboxylic acid, or phosphoric acid, and an amine is particularly preferable from the viewpoint of fast curability of the curable composition and mechanical properties of the cured product.
The amine is not particularly limited, and a primary amine is preferable. Specific examples of amines include aliphatic monoamines such as butylamine, hexylamine, octylamine, decylamine, laurylamine, N, N-dimethyloctylamine; ethylenediamine, hexamethylenediamine, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, etc. An amine having a hydrolyzable silyl group, such as N- (2-aminoethyl) -3-aminopropyltrimethoxysilane and 3-aminopropyltrimethoxysilane. A promoter may be used individually by 1 type, and may be used together 2 or more types. Of these, the combined use of stannous octylate and laurylamine is preferable.
The cocatalyst is preferably used in an amount of 0.01 to 15 parts by mass, particularly preferably 0.1 to 5 parts by mass with respect to 100 parts by mass of the polymer (P).
［充填材］
充填材としては、例えば下記の材料が使用できる。
表面を脂肪酸または樹脂酸系有機物で表面処理した炭酸カルシウム、さらにこれを微粉末化した平均粒径１μｍ以下の膠質炭酸カルシウム、沈降法により製造した平均粒径１〜３μｍの軽質炭酸カルシウム、平均粒径１〜２０μｍの重質炭酸カルシウム等の炭酸カルシウム、フュームシリカ、沈降性シリカ、無水ケイ酸、含水ケイ酸およびカーボンブラック、炭酸マグネシウム、ケイソウ土、焼成カオリン、焼成クレー、クレー、タルク、酸化チタン、ベントナイト、有機ベントナイト、有機樹脂バルーン、酸化第二鉄、酸化亜鉛、活性亜鉛華、シラスバルーン、木粉、パルプ、木綿チップ、マイカ、くるみ穀粉、もみ穀粉、グラファイト、アルミニウム微粉末、フリント粉末等の粉体状充填材。石綿、ガラス繊維、ガラスフィラメント、炭素繊維、ケブラー繊維、ポリエチレンファイバー等の繊維状充填材。
充填材の使用量は重合体（Ｐ）の１００質量部に対して１〜１，０００質量部が好ましく、５０〜２５０質量部がより好ましい。１種を単独で用いてもよく、２種以上併用してもよい。
[Filler]
As the filler, for example, the following materials can be used.
Calcium carbonate whose surface is treated with a fatty acid or resin acid organic substance, finely powdered colloidal calcium carbonate having an average particle size of 1 μm or less, light calcium carbonate having an average particle size of 1 to 3 μm and an average particle produced by a precipitation method Calcium carbonate such as heavy calcium carbonate having a diameter of 1 to 20 μm, fumed silica, precipitated silica, anhydrous silicic acid, hydrous silicic acid and carbon black, magnesium carbonate, diatomaceous earth, calcined kaolin, calcined clay, clay, talc, titanium oxide , Bentonite, organic bentonite, organic resin balloon, ferric oxide, zinc oxide, activated zinc flower, shirasu balloon, wood flour, pulp, cotton chips, mica, walnut flour, rice flour, graphite, fine aluminum powder, flint powder, etc. Powdery filler. Fibrous fillers such as asbestos, glass fiber, glass filament, carbon fiber, Kevlar fiber, polyethylene fiber.
The amount of the filler used is preferably 1 to 1,000 parts by mass and more preferably 50 to 250 parts by mass with respect to 100 parts by mass of the polymer (P). 1 type may be used independently and may be used together 2 or more types.
［可塑剤］
可塑剤としては、たとえばフタル酸ジオクチル、フタル酸ジブチル、フタル酸ジイソノニル（ジイソノニルフタレート）、フタル酸ブチルベンジル等のフタル酸アルキルエステル類；アジピン酸ジオクチル、コハク酸ジイソデシル、セバシン酸ジブチル、オレイン酸ブチル等の脂肪族カルボン酸アルキルエステル類；ペンタエリスリトールエステル等のグルコールエステル類；リン酸トリオクチル、リン酸トリクレジル等のリン酸エステル類；エポキシ化大豆油、エポキシステアリン酸ベンジル等のエポキシ可塑剤；塩素化パラフィン；等が挙げられる。可塑剤は１種単独で用いてもよく、２種以上併用してもよい。
また、（モノ）ポリオール（Ｘ）のほかに、（モノ）ポリオール（Ｘ）より分子量が大きいポリオキシアルキレンポリオールを可塑剤として添加してもよい。かかるポリオキシアルキレンポリオールの分子量（水酸基価換算分子量）の上限値は２０，０００以下が好ましく、１５，０００以下がより好ましい。
（モノ）ポリオール（Ｘ）と（モノ）ポリオール（Ｘ）以外の可塑剤との合計量が、重合体（Ｐ）の１００質量部に対して１０〜１００質量部が好ましく、３０〜８０質量部がより好ましい。
[Plasticizer]
Examples of the plasticizer include dioctyl phthalate, dibutyl phthalate, diisononyl phthalate (diisononyl phthalate), phthalic acid alkyl esters such as butyl benzyl phthalate; dioctyl adipate, diisodecyl succinate, dibutyl sebacate, butyl oleate, etc. Aliphatic carboxylic acid alkyl esters; glycol esters such as pentaerythritol ester; phosphate esters such as trioctyl phosphate and tricresyl phosphate; epoxy plasticizers such as epoxidized soybean oil and epoxy benzyl stearate; Paraffin; and the like. A plasticizer may be used individually by 1 type and may be used together 2 or more types.
In addition to (mono) polyol (X), a polyoxyalkylene polyol having a molecular weight larger than that of (mono) polyol (X) may be added as a plasticizer. The upper limit value of the molecular weight (hydroxyl value converted molecular weight) of the polyoxyalkylene polyol is preferably 20,000 or less, and more preferably 15,000 or less.
The total amount of the (mono) polyol (X) and the plasticizer other than the (mono) polyol (X) is preferably 10 to 100 parts by mass, and 30 to 80 parts by mass with respect to 100 parts by mass of the polymer (P). Is more preferable.
［モジュラス調整剤］
モジュラス調整剤を用いてもよい。モジュラス調整剤とは、加水分解によりトリメチルシラノールを発生しうる化合物を言う。例えば、トリメチルシリルオキシ基を分子内に含有する化合物である。モジュラス調整剤が加水分解することにより発生したトリメチルシラノールは、重合体（Ｐ）と反応するため、硬化性組成物の機械物性を変化させることができる。
モジュラス調整剤としては、トリメチルシリルオキシ基など、トリメチルシラノールを発生しうる官能基を有していれば特に限定されないが、分子量２，０００以下の化合物が好ましく、分子量５００以下の化合物がより好ましい。また、トリメチルシラノールを発生しうる官能基の数が１分子中に平均０．５〜８．０個以下あるものが好ましく、平均０．９〜４．０個がより好ましい。
[Modulus Modifier]
A modulus modifier may be used. The modulus modifier refers to a compound that can generate trimethylsilanol by hydrolysis. For example, a compound containing a trimethylsilyloxy group in the molecule. Trimethylsilanol generated by the hydrolysis of the modulus modifier reacts with the polymer (P), and therefore the mechanical properties of the curable composition can be changed.
The modulus modifier is not particularly limited as long as it has a functional group capable of generating trimethylsilanol, such as a trimethylsilyloxy group, but a compound having a molecular weight of 2,000 or less is preferable, and a compound having a molecular weight of 500 or less is more preferable. In addition, the average number of functional groups capable of generating trimethylsilanol is preferably 0.5 to 8.0 or less, and more preferably 0.9 to 4.0 on average.
モジュラス調整剤の具体例としては、メタノール、エタノール、２−エチルヘキサノール、フェノール等の１価のアルコール；エチレングリコール、プロパンジオール、トリメチロールプロパン、グリセリン、ペンタエリスリトール、ソルビトール等の多価アルコール；などのアルコールの水酸基をトリメチルシリルオキシ化して得られる化合物が好ましい。トリメチルシリルオキシ化する化合物としては１，１，１，３，３，３−ヘキサメチルジシラザン、トリメチルクロロシランなどが挙げられる。
多価アルコールの全水酸基におけるトリメチルシリルオキシ化率は、任意に調整できるが、５０％以上が好ましく、８０％以上がより好ましい。実質的に全ての水酸基がトリメチルシリルオキシ化されていることが最も好ましい。
モジュラス調整剤の使用量は特に限定されるものではなく、目的とする硬化物の物性にあわせて使用量を自由に設定できる。通常は重合体（Ｐ）の１００質量部に対して０．１〜１０．０質量部が好ましく、０．１〜５．０質量部がより好ましい。また、硬化速度調整等の目的で、数種のモジュラス調整剤を併用して用いてもよい。
Specific examples of the modulus regulator include monohydric alcohols such as methanol, ethanol, 2-ethylhexanol and phenol; polyhydric alcohols such as ethylene glycol, propanediol, trimethylolpropane, glycerin, pentaerythritol and sorbitol; A compound obtained by trimethylsilyloxylation of an alcohol hydroxyl group is preferred. Examples of the compound to be trimethylsilyloxylated include 1,1,1,3,3,3-hexamethyldisilazane and trimethylchlorosilane.
Although the trimethylsilyloxylation rate in all the hydroxyl groups of a polyhydric alcohol can be adjusted arbitrarily, 50% or more is preferable and 80% or more is more preferable. Most preferably, substantially all hydroxyl groups are trimethylsilyloxylated.
The usage-amount of a modulus regulator is not specifically limited, A usage-amount can be freely set according to the physical property of the target hardened | cured material. Usually, 0.1-10.0 mass parts is preferable with respect to 100 mass parts of a polymer (P), and 0.1-5.0 mass parts is more preferable. In addition, for the purpose of adjusting the curing speed, several types of modulus adjusting agents may be used in combination.
［溶剤］
重合体（Ｐ）を含有する硬化性組成物に、粘度の調整を向上させるために、溶剤を添加してもよい。この場合の溶剤の使用量は、重合体（Ｐ）の１００質量部に対して０．１〜５００質量部が好ましく、１〜１０質量部がより好ましい。
かかる溶剤としては、脂肪族炭化水素類、芳香族炭化水素類、ハロゲン化炭化水素類、アルコール類、ケトン類、エステル類、エーテル類、エステルアルコール類、ケトンアルコール類、エーテルアルコール類、ケトンエーテル類、ケトンエステル類、エステルエーテル類を使用できる。
[solvent]
In order to improve the adjustment of the viscosity, a solvent may be added to the curable composition containing the polymer (P). 0.1-500 mass parts is preferable with respect to 100 mass parts of a polymer (P), and, as for the usage-amount of the solvent in this case, 1-10 mass parts is more preferable.
Such solvents include aliphatic hydrocarbons, aromatic hydrocarbons, halogenated hydrocarbons, alcohols, ketones, esters, ethers, ester alcohols, ketone alcohols, ether alcohols, ketone ethers. , Ketone esters and ester ethers can be used.
［光硬化性化合物］
重合体（Ｐ）を含有する硬化性組成物に、分子内に複数のアクリロイルオキシ基および／またはメタクリロイルオキシ基（以下、（メタ）アクリロイルオキシ基という場合がある）を有する光硬化性化合物を含有させてもよい。該化合物は耐候性および耐汚染性の向上に寄与する。
該光硬化性化合物としては、光硬化性を有する公知の多官能（メタ）アクリレート化合物を適宜用いることができる。
例えば、トリメチロールプロパントリアクリレート、ポリペンタエリスリトール−カプロラクトン付加物のアクリル酸エステル化合物またはメタクリル酸エステル化合物等を用いることができる。
これらは単独で使用してもよいし、２種類以上を併用してもよい。光硬化性化合物の使用量は、重合体（Ｐ）の１００質量部に対し、０．１〜２０質量部が好ましい。該使用量が０．１質量部より小さいと、顕著な耐候性効果が見られず、２０質量部を超えると、硬化性が遅くなる傾向があり好ましくない。該使用量は、０．１〜２０質量部がより好ましく、１〜１０質量部が更に好ましい。
[Photocurable compound]
The curable composition containing the polymer (P) contains a photocurable compound having a plurality of acryloyloxy groups and / or methacryloyloxy groups (hereinafter sometimes referred to as (meth) acryloyloxy groups) in the molecule. You may let them. The compound contributes to improvement of weather resistance and stain resistance.
As this photocurable compound, the well-known polyfunctional (meth) acrylate compound which has photocurability can be used suitably.
For example, trimethylolpropane triacrylate, an acrylic ester compound or a methacrylic ester compound of a polypentaerythritol-caprolactone adduct can be used.
These may be used alone or in combination of two or more. As for the usage-amount of a photocurable compound, 0.1-20 mass parts is preferable with respect to 100 mass parts of a polymer (P). When the amount used is smaller than 0.1 parts by mass, a remarkable weather resistance effect is not observed, and when it exceeds 20 parts by mass, the curability tends to be slow, which is not preferable. The amount used is more preferably 0.1 to 20 parts by mass, and still more preferably 1 to 10 parts by mass.
［空気酸化硬化性化合物］
硬化性組成物に空気酸化硬化性化合物を含有させてもよい。
かかる空気酸化硬化性化合物としては、空気中の酸素により重合を起こす不飽和基を分子内に有する化合物が用いられる。例えばブタジエン、クロロプレン、イソプレン、１，３−ペンタジエンなどの炭素数４〜８のジエン系化合物を単独重合または共重合させて得られる液状重合体；ジエン系化合物と共重合性を有するアクリロニトリル、スチレン等のモノマーをジエン系化合物が主体となるように共重合させて得られるＮＢＲ、ＳＢＲ等の重合体；それらの各種変性物（マレイン化変性物、ボイル油変性物など）；乾性油；乾性油を変性して得られる各種アルキッド樹脂；乾性油と官能性ポリオキシアルキレンとの反応生成物；乾性油とイソシアネート化合物との反応生成物（ウレタン化油）；乾性油により変性されたアクリル系重合体、エポキシ樹脂、シリコーン樹脂；等が挙げられる。
これらのうち、高分子量ヒンダードアミン系光安定剤の良好な溶解性が得られやすい点で乾性油が好ましい。
[Air oxidation curable compound]
The curable composition may contain an air oxidation curable compound.
As the air oxidative curable compound, a compound having an unsaturated group in the molecule that causes polymerization by oxygen in the air is used. For example, a liquid polymer obtained by homopolymerizing or copolymerizing a diene compound having 4 to 8 carbon atoms such as butadiene, chloroprene, isoprene, 1,3-pentadiene; acrylonitrile, styrene, etc. having a copolymerizability with the diene compound Polymers such as NBR and SBR obtained by copolymerizing the above monomers with a diene compound as a main component; various modified products thereof (maleinized modified products, boiled oil modified products, etc.); drying oils; Various alkyd resins obtained by modification; reaction product of drying oil and functional polyoxyalkylene; reaction product of drying oil and isocyanate compound (urethane oil); acrylic polymer modified with drying oil; And epoxy resins and silicone resins.
Among these, a dry oil is preferable in that good solubility of the high molecular weight hindered amine light stabilizer can be easily obtained.
乾性油の例としては、亜麻仁油、桐油、大豆油、アサ実油、イサノ油、ウルシ核油、エゴマ油、オイチシカ油、カヤ油、クルミ油、ケシ油、サクランボ種子油、ザクロ種子油、サフラワー油、タバコ種子油、トウハゼ核油、ゴム種子油、ヒマワリ種子油、ブドウ核油、ホウセンカ種子油、ミツバ種子油等が挙げられる。
乾性油の中でも、乾燥性(硬化性)の点で、亜麻仁油（ヨウ素価：１７５〜１９５）、桐油（ヨウ素価：１６０〜１７５）、またはケシ油（ヨウ素価：１４０〜１５８）が好ましい。特に桐油は、ケシ油に比べて乾燥性（硬化性）が速いため、表面のタック低減効果に優れ、汚染防止効果が高く、亜麻仁油に比べて黄変しにくいために好ましい。また桐油は、比較的低価格で入手しやすい点でも好ましい。
空気酸化硬化性化合物は単独で用いてもよく、２種以上を併用してもよい。
空気酸化硬化性化合物の使用量は、少なすぎると所期の効果が得られず、多すぎると硬化物の伸びなどが損なわれるやすいため、これらの不都合が生じない範囲とすることが好ましい。例えば重合体（Ｐ）の１００質量部に対して０．０１〜５質量部の範囲が好ましく、０．０３〜３質量部がより好ましい。
Examples of drying oils include linseed oil, tung oil, soybean oil, asa seed oil, isano oil, urushi kernel oil, egoma oil, pear oil, kaya oil, walnut oil, poppy oil, cherry seed oil, pomegranate seed oil, sacrificial oil Examples include flower oil, tobacco seed oil, spruce seed oil, rubber seed oil, sunflower seed oil, grape kernel oil, spinach seed oil, and honey bee seed oil.
Among the drying oils, linseed oil (iodine number: 175 to 195), tung oil (iodine number: 160 to 175), or poppy oil (iodine number: 140 to 158) is preferable in terms of drying property (curability). In particular, tung oil is preferable because it has a fast drying property (curability) compared to poppy oil, is excellent in surface tack reduction effect, has a high antifouling effect, and is less susceptible to yellowing than linseed oil. Tung oil is also preferable because it is relatively inexpensive and easily available.
An air oxidation curable compound may be used independently and may use 2 or more types together.
If the amount of the air oxidative curable compound used is too small, the desired effect cannot be obtained. If the amount used is too large, the elongation of the cured product tends to be impaired. For example, the range of 0.01-5 mass parts is preferable with respect to 100 mass parts of a polymer (P), and 0.03-3 mass parts is more preferable.
［チクソ性付与剤］
チクソ性付与剤の具体例としては、水添ひまし油、脂肪酸アミドが挙げられる。
チクソ性付与剤の使用量は、重合体（Ｐ）の１００質量部に対して１〜１５質量部が好ましく、２〜１０質量部がより好ましい。チクソ性付与剤は１種単独で用いてもよく、２種以上併用してもよい。
[Thixotropic agent]
Specific examples of the thixotropic agent include hydrogenated castor oil and fatty acid amide.
1-15 mass parts is preferable with respect to 100 mass parts of a polymer (P), and, as for the usage-amount of a thixotropy imparting agent, 2-10 mass parts is more preferable. The thixotropic agent may be used alone or in combination of two or more.
［ＨＡＬＳ以外の安定剤］
硬化性組成物に、ヒンダードアミン系光安定剤（ＨＡＬＳ）以外の安定剤を含有させてもよい。例えば、公知の酸化防止剤、紫外線吸収剤を用いることができる。
酸化防止剤としては、ヒンダードフェノール系化合物が好ましい。市販品を適宜使用できる。酸化防止剤の使用量は、重合体（Ｐ）の１００質量部に対して０．１〜０．３質量部が好ましく、０．５〜２質量部がより好ましい。１種を単独で用いてもよく、２種以上併用してもよい。
紫外線吸収剤としては、ベンゾトリアゾール系化合物が好ましい。市販品を適宜使用できる。紫外線吸収剤の使用量は、重合体（Ｐ）の１００質量部に対して０．０５〜２質量部が好ましく、０．１〜１質量部がより好ましい。１種を単独で用いてもよく、２種以上併用してもよい。
[Stabilizers other than HALS]
You may make the curable composition contain stabilizers other than a hindered amine light stabilizer (HALS). For example, known antioxidants and ultraviolet absorbers can be used.
As the antioxidant, hindered phenol compounds are preferred. Commercial products can be used as appropriate. 0.1-0.3 mass part is preferable with respect to 100 mass parts of a polymer (P), and, as for the usage-amount of antioxidant, 0.5-2 mass part is more preferable. 1 type may be used independently and may be used together 2 or more types.
As the ultraviolet absorber, a benzotriazole-based compound is preferable. Commercial products can be used as appropriate. 0.05-2 mass parts is preferable with respect to 100 mass parts of a polymer (P), and, as for the usage-amount of a ultraviolet absorber, 0.1-1 mass part is more preferable. 1 type may be used independently and may be used together 2 or more types.
＜硬化性組成物＞
本発明の硬化性組成物は、すべての配合成分を予め配合密封保存し、施工後空気中の湿気により硬化する１成分型として調製することも可能であり、重合体（Ｐ）を含む主剤とは別に、硬化剤組成物として、硬化触媒、充填材、水等の成分を配合しておき、該硬化剤組成物と主剤を使用前に混合する、２成分型として調製することもできる。２成分型の場合、主剤と硬化剤を混合する際に、トナー等の着色剤を添加して混合してもよい。
<Curable composition>
The curable composition of the present invention can be prepared as a one-component type in which all compounding components are preliminarily blended and stored and cured by moisture in the air after construction. The main component containing the polymer (P) and Separately, the curing agent composition may be prepared as a two-component type in which components such as a curing catalyst, a filler, and water are blended and the curing agent composition and the main agent are mixed before use. In the case of the two-component type, a colorant such as toner may be added and mixed when the main agent and the curing agent are mixed.
本発明の硬化性組成物は、シーリング材（建築用弾性シーリング材シーラント、複層ガラス用シーリング材等。）、封止剤（ガラス端部の防錆・防水用封止剤、太陽電池裏面封止剤等。）、電気絶縁材料（電線・ケーブル用絶縁被覆剤。）等の分野に用いられる接着剤として有用である。また、本発明の硬化性組成物は、粘着剤、塗料材料、フィルム材料、ガスケット材料、注型材料等の用途にも使用できる。 The curable composition of the present invention comprises a sealant (elastic sealant for building, sealant for multi-layer glass, etc.), sealant (anti-rust / waterproof sealant for glass edge, solar cell back surface seal It is useful as an adhesive used in the fields of electrical insulating materials (insulating coatings for electric wires and cables). Moreover, the curable composition of this invention can be used also for uses, such as an adhesive, a coating material, a film material, a gasket material, a casting material.
以下に実施例を用いて本発明をさらに詳しく説明するが、本発明はこれら実施例に限定されるものではない。
表１に示す各成分は以下の通りである。ＨＡＬＳはヒンダート゛アミン系光安定剤である。
［ＨＡＬＳ（１）］ＬＡ−６３Ｐ（ＡＤＥＫＡ社製、分子量約２，０００、融点８５〜１０５℃）。
［ＨＡＬＳ（２）］ＬＡ−６８ＬＤ（ＡＤＥＫＡ社製、分子量約１，９００、融点８０〜１１０℃）。
［ＨＡＬＳ（３）］ＣＨＩＭＡＳＳＯＲＢ９４４ＦＤＬ（ＢＡＳＦ社製、分子量２，０００〜３，１００、融点１００〜１３５℃）。
［ＨＡＬＳ（４）］ＴＩＮＵＶＩＮ６２２ＬＤ（ＢＡＳＦ社製、分子量３，１００〜４，０００、融点５５〜７０℃）。
［ＨＡＬＳ（５）］ＣＨＩＭＡＳＳＯＲＢ２０２０ＦＤＬ（ＢＡＳＦ社製、分子量２，６００〜３，４００、融点１３０〜１３６℃）。
［ＨＡＬＳ（６）］ＣＨＩＭＡＳＳＯＲＢ１１９ＦＬ（ＢＡＳＦ社製、分子量約２，３００、融点１１５〜１５０℃）。
Hereinafter, the present invention will be described in more detail using examples, but the present invention is not limited to these examples.
Each component shown in Table 1 is as follows. HALS is a hindered amine light stabilizer.
[HALS (1)] LA-63P (manufactured by ADEKA, molecular weight of about 2,000, melting point: 85 to 105 ° C.).
[HALS (2)] LA-68LD (manufactured by ADEKA, molecular weight of about 1,900, melting point 80 to 110 ° C.).
[HALS (3)] CHIMASSORB 944FDL (manufactured by BASF, molecular weight 2,000-3,100, melting point 100-135 ° C.).
[HALS (4)] TINUVIN 622LD (manufactured by BASF, molecular weight 3,100 to 4,000, melting point 55 to 70 ° C.).
[HALS (5)] CHIMASSORB2020FDL (manufactured by BASF, molecular weight 2,600-3,400, melting point 130-136 ° C.).
[HALS (6)] CHIMASSORB 119FL (manufactured by BASF, molecular weight of about 2,300, melting point 115 to 150 ° C.).
［ポリオール（Ｘ１）］分子量３，０００のポリオキシプロピレントリオール（旭硝子社製、商品名：ＥＬ−３０３０）。
［ポリオール（Ｘ２）］分子量２，０００のポリオキシプロピレンジオール（旭硝子社製、商品名：ＥＬ−２０２０）。
［ポリオール（Ｘ３）］分子量１，０００のポリオキシプロピレントリオール（旭硝子社製、商品名：ＥＬ−１０３０）。
［モノオール（Ｘ４）］分子量３，３００のポリオキシプロピレンモノオール（旭硝子社製、商品名：ＰＭＬ−Ｓ１００４）。
［比較ポリオール（１）］分子量８，０００のポリオキシプロピレンジオール（旭硝子社製、商品名：ＰＭＬ−Ｓ４１０８）。
［比較ポリオール（２）］分子量３，０００のポリオキシプロピレントリオール（旭硝子社製、商品名：ＥＬ−３０３０）の全末端の１００％をアリル基変性したもの。
［比較ポリオール（３）］分子量４００のポリオキシプロピレントリオール（旭硝子社製、商品名：ＥＬ−４３０）。
[Polyol (X1)] Polyoxypropylene triol having a molecular weight of 3,000 (trade name: EL-3030, manufactured by Asahi Glass Co., Ltd.).
[Polyol (X2)] Polyoxypropylene diol having a molecular weight of 2,000 (trade name: EL-2020, manufactured by Asahi Glass Co., Ltd.).
[Polyol (X3)] Polyoxypropylene triol having a molecular weight of 1,000 (trade name: EL-1030, manufactured by Asahi Glass Co., Ltd.).
[Monool (X4)] Polyoxypropylene monool having a molecular weight of 3,300 (manufactured by Asahi Glass Co., Ltd., trade name: PML-S1004).
[Comparison polyol (1)] Polyoxypropylene diol having a molecular weight of 8,000 (trade name: PML-S4108, manufactured by Asahi Glass Co., Ltd.).
[Comparison polyol (2)] Polyoxypropylene triol having a molecular weight of 3,000 (Asahi Glass Co., Ltd., trade name: EL-3030) having 100% all terminals modified with an allyl group.
[Comparison polyol (3)] Polyoxypropylene triol having a molecular weight of 400 (trade name: EL-430, manufactured by Asahi Glass Co., Ltd.).
［重合体（Ｐ１）］末端に加水分解性ケイ素基を有する３官能プロピレンオキシド重合体。数平均分子量：２０，０００、シリル基変性率：７５％（残りはアリル基である。）、加水分解性ケイ素基は上式（１）においてＸがメトキシ基、Ｒ１がメチル基、ａが２である。
［モジュラス調整剤（１）］トリメチロールプロパンのトリストリメチルシリル化物。
［桐油］空気酸化硬化性化合物。
[Polymer (P1)] A trifunctional propylene oxide polymer having a hydrolyzable silicon group at its terminal. Number average molecular weight: 20,000, silyl group modification rate: 75% (the rest is an allyl group), hydrolyzable silicon group is represented by the above formula (1) where X is a methoxy group, R 1 is a methyl group, and a is 2.
[Modulus Modifier (1)] A tristrimethylsilylated product of trimethylolpropane.
[Tung oil] Air oxidation curable compound.
表２に示す各成分は以下の通りである。
［充填材（１）］膠質炭酸カルシウム（白石工業社製、商品名：白艶華ＣＣＲ）。
［充填材（２）］重質炭酸カルシウム（白石カルシウム工業社製、商品名：ホワイトンＳＢ、平均粒径１．７８μｍ）。
［充填材（３）］酸化チタン（石原産業社製、商品名：Ｒ８２０）。耐候性付与剤。
［充填材（４）］有機バルーン（松本油脂社製、商品名：８０−ＧＣＡ）
［可塑剤（１）］高分子量ポリオール（旭硝子社製、商品名：ＰＲＥＭＩＮＯＬ Ｓ−４０１２、水酸基換算分子量＝１０，０００）。
［可塑剤（２）］ジイソノニルフタレート（略称：ＤＩＮＰ）（新日本理化社製、商品名：サンソサイザーＤＩＮＰ）。
［チクソ性付与剤（１）］水添ひまし油系チクソ性付与剤（楠本化成社製、商品名：ディスパロン＃３０５）。
［光硬化性化合物］多官能アクリル基含有化合物（トリメチロールプロパントリアクリレート、東亞合成社製、商品名：アロニックス Ｍ−３０９）。
［酸化防止剤］ヒンダードフェノール系酸化防止剤（ＢＡＳＦ社製、商品名：イルガノックス１１３５）。
［紫外線吸収剤］ベンゾトリアゾール系紫外線吸収剤（ＢＡＳＦ社製、商品名：チヌビン３２６）。
Each component shown in Table 2 is as follows.
[Filler (1)] Colloidal calcium carbonate (manufactured by Shiroishi Kogyo Co., Ltd., trade name: Baiyinhua CCR)
[Filler (2)] Heavy calcium carbonate (manufactured by Shiroishi Calcium Industry Co., Ltd., trade name: Whiten SB, average particle size 1.78 μm).
[Filler (3)] Titanium oxide (Ishihara Sangyo Co., Ltd., trade name: R820). Weathering agent.
[Filler (4)] Organic balloon (manufactured by Matsumoto Yushi Co., Ltd., trade name: 80-GCA)
[Plasticizer (1)] High molecular weight polyol (manufactured by Asahi Glass Co., Ltd., trade name: PREMINOL S-4012, hydroxyl equivalent molecular weight = 10,000).
[Plasticizer (2)] Diisononyl phthalate (abbreviation: DINP) (manufactured by Shin Nippon Chemical Co., Ltd., trade name: Sansosizer DINP).
[Thixotropic agent (1)] Hydrogenated castor oil-based thixotropic agent (manufactured by Enomoto Kasei Co., Ltd., trade name: Disparon # 305).
[Photo-curable compound] Polyfunctional acrylic group-containing compound (trimethylolpropane triacrylate, manufactured by Toagosei Co., Ltd., trade name: Aronix M-309).
[Antioxidant] Hindered phenol antioxidant (manufactured by BASF, trade name: Irganox 1135).
[Ultraviolet absorber] Benzotriazole ultraviolet absorber (manufactured by BASF, trade name: Tinuvin 326).
＜２成分型用硬化剤組成物＞
表３に示す配合で、下記の（ａ）〜（ｄ）を混合して硬化剤組成物を調製した。
（ａ）硬化触媒としてのオクチル酸第一錫（吉富製薬社製、商品名：スタノクト）と、助触媒としてのラウリルアミン（ｎ−ドデシルアミン、試薬）とを質量比（硬化触媒：助触媒）６：１で混合した混合物。
（ｂ）ジイソノニルフタレート（略称：ＤＩＮＰ、上記と同じ）。
（ｃ）重質炭酸カルシウム（商品名：ホワイトンＳＢ、上記と同じ）。
（ｄ）焼成カオリン（充填剤、竹原化学工業社製、商品名：グロマックスＬＬ）。
<Two-component curing agent composition>
In the formulation shown in Table 3, the following (a) to (d) were mixed to prepare a curing agent composition.
(A) Mass ratio of stannous octylate (trade name: Stanocto, manufactured by Yoshitomi Pharmaceutical Co., Ltd.) as a curing catalyst and laurylamine (n-dodecylamine, reagent) as a promoter (curing catalyst: promoter) Mixture mixed 6: 1.
(B) Diisononyl phthalate (abbreviation: DINP, same as above).
(C) Heavy calcium carbonate (trade name: Whiten SB, same as above).
(D) Firing kaolin (filler, Takehara Chemical Industries, trade name: Glomax LL).
＜実施例１＞
まず表１に示す配合で、光安定剤組成物を調製し、これを用いて重合体混合液を調製した。表１には重合体混合液を基準とする、各成分の含有量（単位：質量％）を示している。
すなわち、５０ｍｌガラス瓶にヒンダート゛アミン系光安定剤（ＨＡＬＳ（１））１０ｇ、ポリオール（Ｘ１）２０ｇを加えて手攪拌し、１００℃の加温槽に２０分放置した後、取り出して、更に手攪拌した。その後、室温（２５℃）まで放冷して光安定剤組成物を得た。
下記の方法で光安定剤組成物の均一性を評価した。結果を表４に示す。
<Example 1>
First, a light stabilizer composition was prepared according to the formulation shown in Table 1, and a polymer mixture was prepared using the composition. Table 1 shows the content (unit: mass%) of each component based on the polymer mixture.
That is, 10 g of hindered amine light stabilizer (HALS (1)) and 20 g of polyol (X1) were added to a 50 ml glass bottle and stirred manually, left in a heating bath at 100 ° C. for 20 minutes, then taken out and further stirred manually. . Then, it stood to cool to room temperature (25 degreeC), and obtained the light stabilizer composition.
The uniformity of the light stabilizer composition was evaluated by the following method. The results are shown in Table 4.
次いで、２０００ｍｌフラスコに重合体（Ｐ１）の１０００ｇを入れ、５０℃に加温した状態で、前記で得た光安定剤組成物（２５℃）８．６ｇ、モジュラス調整剤９．４ｇ、桐油３７．８ｇを添加して３０分混合し、室温（２５℃）まで放冷して重合体混合液を得た。
下記の方法で重合体混合液の均一性を評価した。結果を表４に示す。
Next, 1000 g of the polymer (P1) was put in a 2000 ml flask and heated to 50 ° C., 8.6 g of the light stabilizer composition (25 ° C.) obtained above, 9.4 g of the modulus regulator, Tung Oil 37 0.8 g was added, mixed for 30 minutes, and allowed to cool to room temperature (25 ° C.) to obtain a polymer mixture.
The uniformity of the polymer mixed solution was evaluated by the following method. The results are shown in Table 4.
また、得られた重合体混合液中の未溶解固形分を除去するために、下記の方法で濾過を行い、濾過に要した時間（濾過時間）を測定した。結果を表４に示す。
得られた濾過物（重合体混合液）に、表２の配合で添加成分を加えて混練して基材を得た。これとは別に、表３の配合で成分を混練して硬化剤組成物を得た。基材／硬化剤組成物／ダークグレートナー（１００／１０／３．７）の質量比で混合して硬化性組成物を得た。
得られた硬化性組成物を下記の方法で硬化させ、得られた硬化物の表面の耐候性を評価した。結果を表４に示す。
Moreover, in order to remove the undissolved solid content in the obtained polymer mixed solution, filtration was performed by the following method, and the time required for filtration (filtration time) was measured. The results are shown in Table 4.
To the obtained filtrate (polymer mixed solution), an additive component was added according to the formulation shown in Table 2 and kneaded to obtain a substrate. Separately, the components were kneaded according to the formulation shown in Table 3 to obtain a curing agent composition. The mixture was mixed at a mass ratio of base material / curing agent composition / dark gray toner (100/10 / 3.7) to obtain a curable composition.
The obtained curable composition was cured by the following method, and the weather resistance of the surface of the obtained cured product was evaluated. The results are shown in Table 4.
＜実施例２＞
実施例１において、光安定剤組成物を調製する際にポリオール（Ｘ２）を用いた。その他は実施例1と同様である。
＜実施例３＞
実施例１において、光安定剤組成物を調製する際にポリオール（Ｘ３）を用いた。その他は実施例1と同様である。
＜実施例４＞
実施例１において、光安定剤組成物を調製する際にモノオール（Ｘ４）を用いた。その他は実施例1と同様である。
<Example 2>
In Example 1, polyol (X2) was used when preparing the light stabilizer composition. Others are the same as in Example 1.
<Example 3>
In Example 1, polyol (X3) was used when preparing the light stabilizer composition. Others are the same as in Example 1.
<Example 4>
In Example 1, monool (X4) was used when preparing the light stabilizer composition. Others are the same as in Example 1.
＜実施例５＞
実施例１において、ヒンダート゛アミン系光安定剤（ＨＡＬＳ（２））に変更した。その他は実施例1と同様である。
＜実施例６＞
実施例１において、ヒンダート゛アミン系光安定剤（ＨＡＬＳ（３））に変更し、加熱温度（加熱槽の温度）を１４０℃に変更した。その他は実施例1と同様である。
＜実施例７＞
実施例１において、ヒンダート゛アミン系光安定剤（ＨＡＬＳ（４）に変更し、加熱温度を９０℃に変更した。その他は実施例1と同様である。
＜実施例８＞
実施例１において、ヒンダート゛アミン系光安定剤（ＨＡＬＳ（５））に変更し、加熱温度を１４０℃に変更した。その他は実施例1と同様である。
＜実施例９＞
実施例１において、ヒンダート゛アミン系光安定剤（ＨＡＬＳ（６））に変更し、加熱温度を１５０℃に変更し、加熱時間（加温槽に放置する時間）を３０分に変更した。その他は実施例1と同様である。
<Example 5>
In Example 1, the hindered amine light stabilizer (HALS (2)) was used. Others are the same as in Example 1.
<Example 6>
In Example 1, the hindered amine light stabilizer (HALS (3)) was changed, and the heating temperature (heating bath temperature) was changed to 140 ° C. Others are the same as in Example 1.
<Example 7>
In Example 1, the hindered amine light stabilizer (HALS (4)) was changed, and the heating temperature was changed to 90 ° C. The others were the same as in Example 1.
<Example 8>
In Example 1, the hindered amine light stabilizer (HALS (5)) was changed, and the heating temperature was changed to 140 ° C. Others are the same as in Example 1.
<Example 9>
In Example 1, the hindered amine light stabilizer (HALS (6)) was changed, the heating temperature was changed to 150 ° C., and the heating time (time left in the heating tank) was changed to 30 minutes. Others are the same as in Example 1.
＜比較例１＞
光安定剤組成物を調製する工程を行わず、加熱した重合体（Ｐ１）にヒンダート゛アミン系光安定剤（ＨＡＬＳ（１））を添加、混合した。
すなわち、２０００ｍｌフラスコに重合体（Ｐ１）の１０００ｇを入れ、１２０℃に加温した状態で、ヒンダート゛アミン系光安定剤（ＨＡＬＳ（１））２．８ｇを添加して２時間混合した。次いで５０℃に降温し、モジュラス調整剤９．５ｇ、桐油３８ｇを加えて３０分混合し、室温（２５℃）まで放冷して重合体混合液を得た。その他は実施例1と同様である。
<Comparative Example 1>
The hindered amine light stabilizer (HALS (1)) was added to and mixed with the heated polymer (P1) without performing the step of preparing the light stabilizer composition.
That is, 1000 g of the polymer (P1) was put in a 2000 ml flask, and 2.8 g of a hindered amine light stabilizer (HALS (1)) was added and mixed for 2 hours while heating at 120 ° C. Next, the temperature was lowered to 50 ° C., 9.5 g of a modulus adjusting agent and 38 g of tung oil were added, mixed for 30 minutes, and allowed to cool to room temperature (25 ° C.) to obtain a polymer mixture. Others are the same as in Example 1.
＜比較例２〜４＞
実施例１において、光安定剤組成物を調製する際に比較ポリオール（１）〜（３）をそれぞれ用い、加熱温度（加熱槽の温度）を１２０℃とした。その他は実施例1と同様である。
<Comparative Examples 2-4>
In Example 1, when preparing the light stabilizer composition, comparative polyols (1) to (3) were used, respectively, and the heating temperature (heating bath temperature) was 120 ° C. Others are the same as in Example 1.
＜参考例１＞
加熱したアクリル変性シリコーン重合体を含む組成物に、ヒンダート゛アミン系光安定剤（ＨＡＬＳ（１））を添加、混合して溶解させた。
まず、変成シリコーンポリマー中で、アクリル系モノマーを重合反応させてアクリル変性シリコーン重合体を製造した。
すなわち、末端に加水分解性ケイ素基を有する３官能プロピレンオキシド重合体（数平均分子量：１７，０００、シリル基変性率：７５％、加水分解性ケイ素基は重合体（Ｐ１）と同じである。）の５６０ｇを反応器に入れ、６７℃に加温した状態で、メタクリル酸メチル２８８ｇ、アクリル酸−ｎ−ブチル２６ｇ、メタクリル酸−ｎ−ブチル１１６ｇ、３−メタクリロイルオキシプロピルトリエトキシシラン６０ｇ、ノルマルドデシルメルカプタン５６ｇ、および２，２−アゾビス（２，４−ジメチルバレロニトリル）１０ｇの混合溶液を８時間かけて滴下して重合させ、アクリル変性シリコーン重合体を得た。
<Reference Example 1>
A hindered amine light stabilizer (HALS (1)) was added to the composition containing the heated acrylic-modified silicone polymer, mixed and dissolved.
First, an acrylic monomer was polymerized in a modified silicone polymer to produce an acrylic modified silicone polymer.
That is, a trifunctional propylene oxide polymer having a hydrolyzable silicon group at the terminal (number average molecular weight: 17,000, silyl group modification rate: 75%, the hydrolyzable silicon group is the same as the polymer (P1). ) In a reactor and heated to 67 ° C., methyl 288 g, acrylic acid-n-butyl 26 g, methacrylate-n-butyl 116 g, 3-methacryloyloxypropyltriethoxysilane 60 g, normal A mixed solution of 56 g of dodecyl mercaptan and 10 g of 2,2-azobis (2,4-dimethylvaleronitrile) was dropped and polymerized over 8 hours to obtain an acrylic-modified silicone polymer.
２０００ｍｌフラスコに、得られたアクリル変性シリコーン重合体１０００ｇを入れ、１１０℃に加温した状態で、ヒンダート゛アミン系光安定剤（ＨＡＬＳ（１））２．８ｇを添加して３０分混合した。次いで５０℃に降温し、モジュラス調整剤９．５ｇ、および桐油３８ｇを加えて３０分混合し、室温（２５℃）まで放冷して重合体混合液を得た。不溶分が全く残らない均一な混合液であった。その他は実施例1と同様である。 In a 2000 ml flask, 1000 g of the obtained acrylic-modified silicone polymer was put, and 2.8 g of a hindered amine light stabilizer (HALS (1)) was added and mixed for 30 minutes while heating to 110 ° C. Next, the temperature was lowered to 50 ° C., 9.5 g of a modulus adjusting agent and 38 g of tung oil were added, mixed for 30 minutes, and allowed to cool to room temperature (25 ° C.) to obtain a polymer mixture. It was a uniform mixed solution with no insoluble matter remaining. Others are the same as in Example 1.
＜光安定剤組成物の均一性評価＞
光安定剤組成物中の未溶解成分（白濁）の有無および沈降物の有無を目視で確認し、下記の基準で評価した。
○：未溶解成分（白濁）がなく、透明である。
△：未溶解成分（白濁）があり不透明であるが、沈降物はない。
×：未溶解成分（白濁）があり不透明であり、沈降物もある。
<Evaluation of uniformity of light stabilizer composition>
The presence or absence of undissolved components (white turbidity) and the presence or absence of sediment in the light stabilizer composition were visually confirmed and evaluated according to the following criteria.
○: There is no undissolved component (white turbidity) and it is transparent.
Δ: Undissolved component (white turbidity) and opaque, but no sediment.
X: There are undissolved components (white turbidity), it is opaque, and there is also a sediment.
＜重合体混合液の均一性評価＞
重合体混合液中の未溶解の浮遊物の有無および沈降物の有無を目視で確認し、下記の基準で評価した。
○：浮遊物なし。
△：微かに浮遊物はあるが、沈降物はない。
×：浮遊物があり、沈降物もある。
<Evaluation of uniformity of polymer mixture>
The presence or absence of undissolved suspended matter and the presence or absence of sediment in the polymer mixture were visually confirmed and evaluated according to the following criteria.
○: There is no suspended matter.
Δ: Slightly suspended matter is present but sediment is not present.
X: There are suspended matter and sediment.
＜濾過時間の測定＞
重合体混合液を、直径２００ｍｍの円筒形濾過器にて、下記の条件で濾過し、濾過に要した時間（濾過時間）を測定した。
濾紙：ステンレス金網（５００メッシュ、線径０．０１６ｍｍ、目開き０．０３５ｍｍ）。
混合液量：１０００ｇ。
混合液温度：２５℃。
濾過圧力（Ｎ２）：０．２ＭＰａ。
濾過時間：濾液の出始めから、終わるまでの時間。
<Measurement of filtration time>
The polymer mixture was filtered with a cylindrical filter having a diameter of 200 mm under the following conditions, and the time required for filtration (filtration time) was measured.
Filter paper: Stainless steel wire mesh (500 mesh, wire diameter 0.016 mm, aperture 0.035 mm).
Mixed liquid amount: 1000 g.
Mixture temperature: 25 ° C.
Filtration pressure (N 2 ): 0.2 MPa.
Filtration time: The time from the beginning to the end of the filtrate.
＜耐候性の評価＞
硬化性組成物を厚さ約５ｍｍのシート状に成形し、２３℃かつ相対湿度５０％の条件で７日間養生した後、５０℃かつ相対湿度６５％の条件で７日間養生して硬化させ、硬化物（黒色）を得た。得られた硬化物をサンシャインウェザオメーター（スガ試験機（株）製）に投入し、下記の条件（サンシャインウェザオメーター条件）で耐候試験を行った。
試験開始から５００時間後に、硬化物の表面を観察し、クラックの状態および白化状態を下記の基準で評価した。
［サンシャインウェザオメーター条件］
ブラックパネル：６３℃。
シャワー：１８分／１２０分。
相対湿度：５０％。
［クラックの評価基準］
○：拡大してもクラックは見られない。
□：目視ではクラックの発生がわからないが、拡大すればわかる。
△：目視でよく観察すればクラックの発生がわかる。
×：目視で、一目でクラックの発生がわかるが、間隔は広がっていない。
××：クラックが発生した後、さらに間隔が広がったことがわかる。
［白化の評価基準］
○：試験前と比べて変化が見られない。
□：光沢がなくなってきている。
△：一部白くなりかけている。
×：全体的に白っぽくなってきている。
××：全体的に色が抜けてしまっている。
<Evaluation of weather resistance>
The curable composition is formed into a sheet having a thickness of about 5 mm, cured for 7 days at 23 ° C. and 50% relative humidity, and then cured for 7 days at 50 ° C. and 65% relative humidity. A cured product (black) was obtained. The obtained cured product was put into a sunshine weatherometer (manufactured by Suga Test Instruments Co., Ltd.), and a weather resistance test was conducted under the following conditions (sunshine weatherometer conditions).
After 500 hours from the start of the test, the surface of the cured product was observed, and the crack state and the whitening state were evaluated according to the following criteria.
[Sunshine weatherometer conditions]
Black panel: 63 ° C.
Shower: 18 minutes / 120 minutes.
Relative humidity: 50%.
[Evaluation criteria for cracks]
○: No cracks are seen even when enlarged.
□: Cracks cannot be visually observed, but can be seen by enlarging.
Δ: The occurrence of cracks can be seen by visual observation.
X: The occurrence of cracks can be seen at a glance, but the interval is not widened.
Xx: It turns out that the space | interval further expanded after the crack generate | occur | produced.
[Evaluation criteria for whitening]
○: No change is observed compared to before the test.
□: The gloss is disappearing.
Δ: Some are becoming white.
X: Overall is becoming whitish.
XX: The color has been lost as a whole.
表４の結果に示されるように、実施例１〜９ではヒンダードアミン系光安定剤が均一に溶解した光安定剤組成物が得られた。またこれを用いて重合体（Ｐ１）と混合することにより、不溶分が全く残らない均一な重合体混合液が得られた。この重合体混合液を用いて製造された硬化性組成物は、硬化物表面の耐候性に優れるものであった。 As shown in the results of Table 4, in Examples 1 to 9, light stabilizer compositions in which the hindered amine light stabilizer was uniformly dissolved were obtained. Moreover, by using this and mixing with the polymer (P1), a uniform polymer mixed solution with no insoluble matter remaining was obtained. The curable composition manufactured using this polymer mixed solution was excellent in the weather resistance of the cured product surface.
これに対して、光安定剤組成物を調製する工程を行わず、ヒンダート゛アミン系光安定剤を直接重合体（Ｐ）に添加、混合した比較例１は、重合体混合液が、浮遊物がある不均一な液となった。この重合体混合液を用いて製造された硬化性組成物は、ヒンダート゛アミン系光安定剤および添加剤（モジュラス調整剤および空気酸化硬化性化合物）を、実施例１〜９とほぼ同量配合したにもかかわらず、硬化物表面の耐候性が劣り、特にクラックの抑制が不十分であった。 On the other hand, in Comparative Example 1 in which the hindered amine light stabilizer was directly added to and mixed with the polymer (P) without performing the step of preparing the light stabilizer composition, the polymer mixture had a suspended matter. The liquid became uneven. The curable composition produced using this polymer mixed solution had a hindered amine light stabilizer and additives (modulus modifier and air oxidation curable compound) mixed in substantially the same amount as in Examples 1-9. Nevertheless, the weather resistance of the cured product surface was inferior, and crack suppression was particularly insufficient.
比較例２では、ヒンダート゛アミン系光安定剤を分子量が８，０００の比較ポリオール（１）に溶解させたところ、不溶分の粒（沈降物）が残る白濁不均一な混合液（光安定剤組成物）となり、これを用いて調製した重合体混合液も不溶分の粒が残る不均一な液であった。この重合体混合液を用いて製造された硬化性組成物は、ヒンダート゛アミン系光安定剤および添加剤を、実施例１〜９とほぼ同量配合したにもかかわらず、硬化物表面の耐候性が劣り、クラックの抑制および白化の抑制が不十分であった。 In Comparative Example 2, when a hindered amine light stabilizer was dissolved in a comparative polyol (1) having a molecular weight of 8,000, a cloudy non-uniform mixed liquid (light stabilizer composition) in which insoluble particles (precipitate) remained. The polymer mixture prepared using this was also a non-uniform solution in which insoluble particles remained. The curable composition produced using this polymer mixed solution has a weather resistance on the surface of the cured product despite the fact that the same amount of hindered amine light stabilizers and additives as in Examples 1 to 9 is blended. Inferior, cracks and whitening were insufficient.
比較例３では、ヒンダート゛アミン系光安定剤を全末端がアリル基に変性された比較ポリオール（２）に溶解させたところ、１２０℃に加温された状態では均一な混合液（光安定剤組成物）となったが、常温に降温したときに浮遊物（白濁）が生じ、不透明な液となった。これを用いて調製した重合体混合液は浮遊物がある不均一な液であった。この重合体混合液を用いて製造された硬化性組成物は、ヒンダート゛アミン系光安定剤および添加剤を、実施例１〜９とほぼ同量配合したにもかかわらず、硬化物表面の耐候性が劣り、特にクラックの抑制が不十分であった。 In Comparative Example 3, a hindered amine light stabilizer was dissolved in a comparative polyol (2) having all ends modified with allyl groups. When heated to 120 ° C., a uniform mixed solution (light stabilizer composition) was used. However, suspended matter (white turbidity) was generated when the temperature was lowered to room temperature, and the liquid became opaque. The polymer mixture prepared using this was a heterogeneous liquid with suspended solids. The curable composition produced using this polymer mixed solution has a weather resistance on the surface of the cured product despite the fact that the same amount of hindered amine light stabilizers and additives as in Examples 1 to 9 is blended. Inferior, especially crack suppression was insufficient.
比較例４では、ヒンダート゛アミン系光安定剤を分子量が４００の比較ポリオール（３）に溶解させたところ、１２０℃に加温された状態では均一な混合液（光安定剤組成物）となったが、常温に降温したときに不溶分の粒（沈降物）が生じ、白濁不均一な液となった。これを用いて調製した重合体混合液も不溶分の粒が残る不均一な液であった。この重合体混合液を用いて製造された硬化性組成物は、ヒンダート゛アミン系光安定剤および添加剤を、実施例１〜９とほぼ同量配合したにもかかわらず、硬化物表面の耐候性が劣り、特にクラックの抑制が不十分であった。 In Comparative Example 4, when the hindered amine light stabilizer was dissolved in the comparative polyol (3) having a molecular weight of 400, a uniform mixed solution (light stabilizer composition) was obtained when heated to 120 ° C. When the temperature was lowered to room temperature, insoluble particles (precipitate) were formed, resulting in a cloudy non-uniform liquid. The polymer mixture prepared using this was also a non-uniform liquid in which insoluble particles remained. The curable composition produced using this polymer mixed solution has a weather resistance on the surface of the cured product despite the fact that the same amount of hindered amine light stabilizers and additives as in Examples 1 to 9 is blended. Inferior, especially crack suppression was insufficient.
参考例１は、特許文献２に記載されているようなアクリル変性シリコーン重合体を含む組成物に、ヒンダート゛アミン系光安定剤を溶解させた例である。アクリル変性シリコーン重合体を、ヒンダート゛アミン系光安定剤の融点以上の温度に加温して、ヒンダート゛アミン系光安定剤を添加、混合することにより、不溶分が全く残らない均一なアクリル変性シリコーン重合体混合液が得られたが、実施例１〜９に比べて、濾過性が顕著に劣っていた。これはアクリルポリマー自身が高粘度であるうえに、一部変成シリコーンポリマーと共重合したことにより粘度がより高くなり、濾過性が悪くなったためと考えられる。
Reference Example 1 is an example in which a hindered amine light stabilizer is dissolved in a composition containing an acrylic-modified silicone polymer as described in Patent Document 2. Uniform acrylic-modified silicone polymer mixture that does not leave any insoluble matter by heating the acrylic-modified silicone polymer to a temperature above the melting point of the hindered amine light stabilizer and adding and mixing the hindered amine light stabilizer. Although the liquid was obtained, the filterability was remarkably inferior compared with Examples 1-9. This is presumably because the acrylic polymer itself has a high viscosity, and the viscosity is higher due to the copolymerization with a partly modified silicone polymer, resulting in poor filterability.
Claims (5)
水酸基価換算分子量５００〜５，０００のポリオキシアルキレン（モノ）ポリオール（Ｘ）と、前記ヒンダードアミン系光安定剤を含む混合物を、該混合物中のヒンダードアミン系光安定剤の融点以上の温度で加熱して、前記ヒンダードアミン系光安定剤を溶解させる工程を有する、光安定剤組成物の製造方法。 A method for producing a liquid light stabilizer composition comprising a hindered amine light stabilizer having a number average molecular weight of 1,000 to 5,000,
A polyoxyalkylene hydroxy value-based molecular weight 500 to 5,000 (mono) polyol (X), a mixture containing the hindered amine light stabilizer, and heated at hindered amine light temperature above the melting point of the stabilizer in the mixture A method for producing a light stabilizer composition, comprising the step of dissolving the hindered amine light stabilizer.
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