JP2004107653A5

JP2004107653A5 -

Info

Publication number: JP2004107653A5
Application number: JP2003298428A
Authority: JP
Filing date: 2003-08-22
Publication date: 2006-09-21
Anticipated expiration: 2023-08-22

Description

すなわち、本発明は、ビニル系単量体混合物を共重合して得られる共重合体（Ａ）３０〜６５質量部、フェノール変性、ビニル変性または油変性アルキド樹脂（Ｂ）３〜１５質量部、１分子中に３個以上の（メタ）アクリロイルオキシ基を有する多官能性単量体（ｃ−１）２０〜１００質量％と、１分子中に１または２個の（メタ）アクリロイルオキシ基を有する単官能性または２官能性単量体（ｃ−２）８０〜０質量％とからなる単量体（Ｃ）３０〜６５質量部、および光重合開始剤（Ｄ）０.１〜１５質量部［但し（Ａ）〜（Ｄ）成分の合計を１００質量部とする］を含む被覆材組成物である。 That is, the present invention relates to 30 to 65 parts by mass of a copolymer (A) obtained by copolymerizing a vinyl monomer mixture, 3 to 15 parts by mass of a phenol-modified, vinyl-modified or oil-modified alkyd resin (B), 20 to 100% by mass of a polyfunctional monomer (c-1) having three or more (meth) acryloyloxy groups in one molecule and one or two (meth) acryloyloxy groups in one molecule 30 to 65 parts by mass of a monofunctional or bifunctional monomer (c-2) having 80 to 0% by mass, and 0.1 to 15 parts by mass of a photopolymerization initiator (D). The coating material composition contains the composition (wherein the total of the components (A) to (D) is 100 parts by mass).

本発明においては、ビニル系単量体混合物を共重合して得られる共重合体（Ａ）と、フェノール変性、ビニル変性または油変性アルキド樹脂（Ｂ）を含有させることによって、大型または形状の複雑な基材に対して一定距離から塗装しても、優れた外観を有する硬化塗膜を形成することが可能な、貯蔵安定性に優れた被覆材組成物を提供できる。 In the present invention, by adding a copolymer (A) obtained by copolymerizing a vinyl monomer mixture and a phenol-modified, vinyl-modified or oil-modified alkyd resin (B), a large-sized or complex shaped resin is obtained. It is possible to provide a coating composition having excellent storage stability and capable of forming a cured coating film having an excellent appearance even when applied to a basic substrate from a certain distance.

このような効果は、（Ａ）成分と（Ｂ）成分を併用することによって得られるものであり、一方のみを用いても得られるものではない。具体的には、共重合体（Ａ）単独の場合、つまり本発明の組成物から（Ｂ）成分を除く組成物の場合には、貯蔵安定性が不良で、基材と塗装ガンとの距離が遠いと得られる硬化塗膜の外観が不良となる傾向がある。一方、フェノール変性、ビニル変性または油変性アルキド樹脂（Ｂ）単独の場合、つまり本発明の組成物から（Ａ）成分を除く組成物の場合には、貯蔵安定性が不良で、基材と塗装ガンとの距離が近いと得られる硬化塗膜の外観が不良となる傾向がある。 Such an effect can be obtained by using the component (A) and the component (B) in combination, and cannot be obtained by using only one of them. Specifically, in the case of the copolymer (A) alone, that is, in the case of the composition excluding the component (B) from the composition of the present invention, the storage stability is poor and the distance between the substrate and the coating gun is poor. When the distance is too far, the appearance of the obtained cured coating film tends to be poor. On the other hand, in the case of the phenol-modified, vinyl-modified or oil-modified alkyd resin (B) alone, that is, in the case of the composition of the present invention excluding the component (A), the storage stability is poor, and When the distance from the gun is short, the appearance of the obtained cured coating film tends to be poor.

本発明に用いるフェノール変性、ビニル変性または油変性アルキド樹脂（Ｂ）は、被覆材組成物の塗膜の表面平滑性を向上させる成分である。例えば、このフェノール変性、ビニル変性または油変性アルキド樹脂（Ｂ）を用いることにより、基材と塗装ガンとの距離が一定でない場合でも、表面平滑性に優れた硬化塗膜を形成することができ、その結果、硬化塗膜上に表面平滑性に優れた鏡面状態の金属蒸着膜を得ることが可能となる。 The phenol-modified, vinyl-modified or oil-modified alkyd resin (B) used in the present invention is a component that improves the surface smoothness of the coating film of the coating composition. For example, by using the phenol-modified, vinyl-modified or oil-modified alkyd resin (B), a cured coating film having excellent surface smoothness can be formed even when the distance between the base material and the coating gun is not constant. As a result, it is possible to obtain a mirror-finished metal deposited film having excellent surface smoothness on the cured coating film.

フェノール変性、ビニル変性または油変性アルキド樹脂（Ｂ）の油長は、塗膜の外観向上や他の成分との相溶性の観点から、２０〜５０％が好ましい。 The oil length of the phenol-modified, vinyl-modified or oil-modified alkyd resin (B) is preferably from 20 to 50% from the viewpoint of improving the appearance of the coating film and compatibility with other components.

フェノール変性、ビニル変性または油変性アルキド樹脂（Ｂ）として、市販品を使用することができる。例えば、ヤシ油変性アルキド樹脂として、ベッコゾール１３２３−６０−ＥＬ（大日本インキ化学工業社製、油長３２％）；トール油変性アルキド樹脂として、ベッコゾールＥＴ−３０６１−６０（大日本インキ化学工業社製、油長３０％）；大豆油変性アルキド樹脂として、ベッコゾールＥＳ−４０２０−５５（大日本インキ化学工業社製、油長４０％）、ベッコゾール０Ｄ−Ｅ−１９８−５０（大日本インキ化学工業社製、油長２８％）、ベッコゾール１３０７−６０−EL（大日本インキ化学工業社製、油長４１％）、アマニ油変性アルキド樹脂として、ベッコゾールＥＬ−４５０１−５０（大日本インキ化学工業社製、油長４５％）；フェノール変性アルキド樹脂として、ベッコゾール１３４１（大日本インキ化学工業社製、油長２８％）、ベッコゾールＪ６０８（大日本インキ化学工業社製、油長４３％）等が挙げられる。 Commercial products can be used as the phenol-modified, vinyl-modified or oil-modified alkyd resin (B). For example, as a coconut oil-modified alkyd resin, Veccosol 1323-60-EL (manufactured by Dainippon Ink and Chemicals, oil length 32%); as a tall oil-modified alkyd resin, as Veccosol ET-3061-60 (Dainippon Ink and Chemicals, Inc.) Manufactured by Soybean Oil-modified alkyd resin, Veccosol ES-4020-55 (manufactured by Dainippon Ink & Chemicals, Inc., oil length: 40%), Veccosol 0D-E-198-50 (Dainippon Ink & Chemicals, Inc.) Veccosol 1307-60-EL (manufactured by Dainippon Ink and Chemicals, Inc., oil length 41%), as a linseed oil-modified alkyd resin, Veccosol EL-4501-50 (Dainippon Ink and Chemicals, Inc.) 134% (oil length 28%, manufactured by Dainippon Ink and Chemicals, Inc.) as a phenol-modified alkyd resin ), Beckosol J608 (manufactured by DIC Corporation, oil length 43%), and the like.

本発明の被覆材組成物において、フェノール変性、ビニル変性または油変性アルキド樹脂（Ｂ）の含有量は、（Ａ）〜（Ｄ）成分の合計１００質量部を基準として３〜１５質量部である。（Ｂ）成分の含有量が３質量部未満では、十分なレベリング性が得られない。また、１５質量部を超えると、塗装時にタレが発生したり、塗膜硬度が低下する。より好ましい含有量は、下限値が３質量部であり、上限値が１２質量部である。 In the coating composition of the present invention, the content of the phenol-modified, vinyl-modified or oil-modified alkyd resin (B) is 3 to 15 parts by mass based on 100 parts by mass in total of the components (A) to (D). . If the content of the component (B) is less than 3 parts by mass, sufficient leveling properties cannot be obtained. On the other hand, when the amount exceeds 15 parts by mass, sagging occurs at the time of coating, and the coating film hardness decreases. A more preferred content has a lower limit of 3 parts by mass and an upper limit of 12 parts by mass.

Claims

30 to 65 parts by mass of a copolymer (A) obtained by copolymerizing a vinyl monomer mixture,
Phenol-modified, vinyl-modified or oil-modified alkyd resin (B) 3 to 15 parts by mass,
20 to 100% by mass of a polyfunctional monomer (c-1) having three or more (meth) acryloyloxy groups in one molecule and one or two (meth) acryloyloxy groups in one molecule 30 to 65 parts by mass of a monomer (C) consisting of 80 to 0% by mass of a monofunctional or bifunctional monomer (c-2), and 0.1 to 15 parts by mass of a photopolymerization initiator (D) Parts (provided that the total of components (A) to (D) is 100 parts by mass)
A coating material composition comprising: