JP2905276B2 - Coating composition - Google Patents
Coating compositionInfo
- Publication number
- JP2905276B2 JP2905276B2 JP23283690A JP23283690A JP2905276B2 JP 2905276 B2 JP2905276 B2 JP 2905276B2 JP 23283690 A JP23283690 A JP 23283690A JP 23283690 A JP23283690 A JP 23283690A JP 2905276 B2 JP2905276 B2 JP 2905276B2
- Authority
- JP
- Japan
- Prior art keywords
- synthetic resin
- fine particles
- partially soluble
- coating composition
- resin fine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Paints Or Removers (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、被覆組成物に関する。The present invention relates to a coating composition.
被覆組成物にあっては，そのバインダー樹脂の性能
は，塗装素材への密着性能が基本性能として必要とされ
る性能であり，更に高機能化として，鮮映性，耐候性，
耐薬品性，耐摩耗性，意匠性などが要求される。In the coating composition, the performance of the binder resin is the performance that requires the adhesion performance to the coating material as the basic performance.
Chemical resistance, abrasion resistance, design, etc. are required.
このように，バインダー樹脂には様々な要求性能があ
るが，この全てを単一のポリマーで満たすことは困難な
ことであるため，従来は，数種類の合成樹脂バインダー
をブレンドすることによって，要求性能のバランスのと
れた被覆組成物を得ていた。また，単一の被覆組成物で
充分に要求性能を達成できない場合においては，異種の
被覆組成物を複数回塗装することによって要求性能を満
たした仕上がり塗膜を得ていた。As described above, binder resins have various required performances, but it is difficult to satisfy all of them with a single polymer. Was obtained. In addition, when the required performance cannot be sufficiently achieved with a single coating composition, a different coating composition is applied a plurality of times to obtain a finished coating film that satisfies the required performance.
しかし，このような従来の波覆組成物では，塗膜が多
層構造を形成せずに単一のバインダー樹脂層となるか，
あるいは多層構造を形成しても，層間での付着性能に欠
けており，安定した多層構造の形成が困難であった。ま
た，異種の被覆組成物を複数回塗装する場合には，塗装
作業に要する手間や時間がかかるため，塗装作業性が著
しく悪くなるという問題があった。However, in such a conventional corrugating composition, the coating film becomes a single binder resin layer without forming a multilayer structure,
Alternatively, even if a multilayer structure is formed, the adhesion performance between the layers is lacking, and it has been difficult to form a stable multilayer structure. In addition, when a different kind of coating composition is applied a plurality of times, there is a problem that the work required for the coating operation is time-consuming and time-consuming, and the workability of the coating operation is remarkably deteriorated.
本発明は以上の欠点を除去するために,1種類以上の溶
剤と，この溶剤により部分的に溶解されて常温常圧で10
％以上90％以下のゲル分率を有する粒子であって、反応
性を有する官能基を有する１種類以上の部分溶解性合成
樹脂微粒子と、その部分溶解性合成樹脂微粒子と架橋反
応可能な官能基を有する１種類以上の塗料用合成樹脂バ
インダーとからなることを特徴とする被覆組成物を提供
するものである。In order to eliminate the above-mentioned disadvantages, the present invention provides one or more solvents and a solvent partially dissolved by the solvent at room temperature and pressure.
Particles having a gel fraction of at least 90% and not more than 90%, and at least one kind of partially soluble synthetic resin fine particles having a reactive functional group, and a functional group capable of undergoing a crosslinking reaction with the partially soluble synthetic resin fine particles. And a coating composition comprising at least one kind of synthetic resin binder for paint having the following.
本発明はこのような特徴を有するので，常温常圧で10
％以上90％以下のゲル分率を呈する部分溶解性合成樹脂
微粒子の官能基と塗料用合成樹脂バインダーの官能基と
が架橋反応を呈し、したがって、機械的強度の大きな塗
膜を形成できるので、耐薬品性や耐候性のような塗膜特
性を向上できるばかりでなく、安定した多層構造を有す
る塗膜を形成することができる。Since the present invention has such characteristics, it can be used at room temperature and normal pressure.
% And a functional group of a partially soluble synthetic resin fine particle exhibiting a gel fraction of 90% or less and a functional group of a synthetic resin binder for coating exhibit a cross-linking reaction, so that a coating film having high mechanical strength can be formed. Not only can the coating properties such as chemical resistance and weather resistance be improved, but also a coating having a stable multilayer structure can be formed.
本発明は，このような従来の問題点に着目してなされ
たものであって，被覆組成物において有効に作用する多
層構造を形成することが可能な，新規なポリマーブレン
ドの処方を提供するものである。The present invention has been made in view of such conventional problems, and provides a novel polymer blend formulation capable of forming a multi-layer structure effectively acting in a coating composition. It is.
バインダー樹脂層は，被覆組成物の基本性能として，
一般的に塗装素材に対する密着性が要求されるものであ
るため，塗膜形成時に，それぞれに特有の機能をもった
多層構造を有する塗膜を安定に形成することができれ
ば，高性能な塗膜を得ることができる。The binder resin layer, as a basic performance of the coating composition,
In general, adhesion to coating materials is required, so if it is possible to stably form a multi-layer coating with unique functions at the time of coating formation, a high-performance coating Can be obtained.
本発明者は上記の考えに基づき検討した結果,2次的機
能を発現する塗料用合成樹脂バインダーと，有機溶剤の
ような常温常圧で液状の物質（以下液状物質という）
と，該液状物質により常温常圧で部分的に溶解される微
粒子（以下部分溶解性合成樹脂微粒子という）とを均一
に分散することによって，安定した多層構造を有する高
機能塗膜が得られることを見出し，本発明に至った。The present inventor has conducted a study based on the above idea, and found that a synthetic resin binder for paint that exhibits a secondary function and a substance that is liquid at normal temperature and normal pressure such as an organic solvent (hereinafter referred to as a liquid substance)
And fine particles partially dissolved by the liquid substance at normal temperature and normal pressure (hereinafter referred to as partially soluble synthetic resin fine particles) to obtain a highly functional coating film having a stable multilayer structure. And found the present invention.
本発明で用いられる部分溶解性合成樹脂微粒子は，塗
装素材に対する密着性能に優れたものであり，かつ組成
物中の液状物質に対して常温常圧で部分的な溶解性を示
すものであればよい。The partially soluble synthetic resin fine particles used in the present invention are those which have excellent adhesion performance to a coating material and show partial solubility at normal temperature and pressure in a liquid substance in a composition. Good.
この部分溶解性合成樹脂微粒子の形状については，均
一な球状であることが好ましく，また粒子径について
は，被覆膜厚や塗装皮膜の仕上がり外観性状から，平均
粒子径が30μｍ以下であることが好ましいが，特にこれ
に限定されない。また，この部分溶解性合成樹脂微粒子
の持つ物性として，組成物中の液状物質に対する常温常
圧での溶解性の尺度としてのゲル分率が,10％以上90％
以下であることが必要であるが，好ましい範囲は50％以
上80％以下である。The shape of the partially soluble synthetic resin fine particles is preferably uniform and spherical, and the average particle size of the particles is preferably 30 μm or less from the viewpoint of the coating film thickness and the finish appearance of the coating film. Preferred, but not limited to. As the physical properties of the partially soluble synthetic resin fine particles, the gel fraction as a measure of the solubility of the liquid material in the composition at normal temperature and normal pressure is 10% or more and 90% or more.
It is necessary to be less than 50%, but a preferable range is 50% or more and 80% or less.
ゲル分率の低い部分溶解性合成樹脂徴粒子を用いた場
合には，通常のポリマーブレンド状態に近づくために，
従来のポリマーブレンドにおいて見られた問題が発生
し，かつ多層構造を有する塗膜が得られない場合があ
る。In the case of using partially soluble synthetic resin particles with a low gel fraction, in order to approach a normal polymer blend state,
Problems encountered in conventional polymer blends occur, and a coating film having a multilayer structure may not be obtained.
また逆に，ゲル分率の高い部分溶解性合成樹脂微粒子
を用いた場合には，塗装素材に対する密着性を発揮する
樹脂層の形成が効果的に行われず，かつこの場合にも，
多層構造を有する塗膜が得られない場合がある。Conversely, when partially soluble synthetic resin fine particles having a high gel fraction are used, the formation of a resin layer exhibiting adhesion to the coating material is not effectively performed.
In some cases, a coating film having a multilayer structure cannot be obtained.
この部分溶解性合成樹脂微粒子は，反応性の官能基を
持つものであることが好ましい。官能基としては，水酸
基，カルボキシル基，アミノ基，エポキシ基，イソシア
ネート基等を例示することができる。これは，この官能
基を利用して，バインダー樹脂と部分溶解性合成樹脂微
粒子及び塗膜全体を架橋させることによって，更に高性
能な塗膜を得ることが可能となるためであり，かつ多層
構造での層間において架橋することにより２層間の安定
化に寄与するからである。The partially soluble synthetic resin fine particles preferably have a reactive functional group. Examples of the functional group include a hydroxyl group, a carboxyl group, an amino group, an epoxy group, and an isocyanate group. This is because a higher performance coating film can be obtained by using this functional group to crosslink the binder resin, the partially soluble synthetic resin fine particles, and the entire coating film, and to obtain a multilayer structure. This is because cross-linking between the layers contributes to stabilization between the two layers.
ここで用いられる液状物質は，上記部分溶解性合成樹
脂微粒子を組成物中において常温常圧で上記ゲル分率の
範囲に部分溶解させ得るものであり，かつ塗料用合成樹
脂バインダーに対する相溶性の良好なものである。The liquid substance used here is capable of partially dissolving the partially soluble synthetic resin fine particles in the composition at normal temperature and pressure in the range of the gel fraction, and has good compatibility with the synthetic resin binder for paint. It is something.
本発明に用いられる塗料用合成樹脂バインダーは，上
記部分溶解性合成樹脂微粒子の持つ機能と異なる機能を
発現する合成樹脂化合物であればよい。樹脂のタイプと
してはアクリル樹脂，ポリエステル樹脂，ポリエーテル
樹脂，エポキシ樹脂，ウレタン樹脂，ポリオレフィン樹
脂，オルガノシロキサン樹脂等を例示することができ
る。その機能としては，鮮映性，耐候性，耐薬品性，耐
摩耗性，意匠性等を例示することができる。更に，この
塗料用合成樹脂バインダーは反応性を有する官能基を有
することが好ましく，官能基としては，水酸基，カルボ
キシル基，アミノ基，エポキシ基，イソシアネート基等
を例示することができる。The synthetic resin binder for paints used in the present invention may be any synthetic resin compound that exhibits a function different from the function of the partially soluble synthetic resin fine particles. Examples of the resin type include acrylic resin, polyester resin, polyether resin, epoxy resin, urethane resin, polyolefin resin, and organosiloxane resin. Examples of such functions include sharpness, weather resistance, chemical resistance, abrasion resistance, and design. Further, the synthetic resin binder for a coating material preferably has a reactive functional group, and examples of the functional group include a hydroxyl group, a carboxyl group, an amino group, an epoxy group, and an isocyanate group.
これは前述の理由と同じ理由によるもので，塗膜を架
橋させることによって，更に高性能な塗膜を得ることが
可能となり，かつ多層構造で層間架橋することにより，
層間の安定化に寄与するからである。なお，上記反応性
の官能基を有する組成物中で，液状物質に対して常温常
圧で部分溶解性を示す合成樹脂微粒子と，塗料用合成樹
脂バインダーとは，従来一般に行われてきた方法によっ
て架橋可能である。This is for the same reason as described above. By cross-linking the coating film, it is possible to obtain a higher-performance coating film.
This is because it contributes to stabilization between layers. In the composition having the above reactive functional group, the synthetic resin fine particles showing partial solubility at normal temperature and normal pressure with respect to the liquid substance and the synthetic resin binder for paint are prepared by a method generally used in the past. Can be crosslinked.
第３の成分を上記被覆組成物に添加することによって
架橋硬化する方法としては，例えば塗料用合成樹脂バイ
ンダーに水酸基を有し，かつ部分溶解性合成樹脂微粒子
に水酸基を有する場合には，多官能イソシアネートプレ
ポリマー等によって架橋することができる。As a method of crosslinking and curing by adding the third component to the coating composition, for example, when the synthetic resin binder for coating has a hydroxyl group and the partially soluble synthetic resin fine particles have a hydroxyl group, a polyfunctional compound is used. It can be cross-linked by an isocyanate prepolymer or the like.
また，以上説明した被覆組成物は，着色顔料や染料を
分散することによる着色方法により着色可能であり，且
つ艶消し用体質顔料を分散することにより艶消し被覆組
成物を得ることができる。The coating composition described above can be colored by a coloring method by dispersing a coloring pigment or a dye, and a matte coating composition can be obtained by dispersing a matting extender.
以下この発明を実施例を用いて説明するが，これによ
って本発明が限定されるものではない。Hereinafter, the present invention will be described with reference to examples, but the present invention is not limited thereto.
実施例１ 主成分として,MMA,BMA,HEMAよりなるメチルエチルケ
トン中でのゲル分率が80％である平均粒子径５μｍの部
分溶解性合成樹脂微粒子20重量部を，トルエン，メチル
エチルケトン，メチルイソブチルケトン，ターシャリー
ブタノールからなる混合溶剤80重量部に溶解し，水酸基
価20mgKOH/gである部分溶解性アクリル系樹脂溶液100重
量部を得た。Example 1 As a main component, 20 parts by weight of partially soluble synthetic resin fine particles having an average particle diameter of 5 μm and having a gel fraction in methyl ethyl ketone of MMA, BMA, and HEMA of 80% were mixed with toluene, methyl ethyl ketone, methyl isobutyl ketone, It was dissolved in 80 parts by weight of a mixed solvent of tertiary butanol to obtain 100 parts by weight of a partially soluble acrylic resin solution having a hydroxyl value of 20 mgKOH / g.
次に，固形分40％，水酸基価30mgKOH/gである塗料用
ウレタン系合成樹脂バインダー70重量部に対して上記部
分溶解性アクリル系樹脂溶液30重量部を混合し,NCO/OH
＝1:1.1となるようにε−カプロラクトンにより変成さ
れたイソシアネートプレポリマーを配合した混合物を，
塗料用ウレタン系合成樹脂バインダーを溶解することが
できイソシアネートプレポリマーと反応性のない適切な
溶剤で希釈し，ポリスチレン素材に塗装した。Next, 30 parts by weight of the partially soluble acrylic resin solution were mixed with 70 parts by weight of a urethane-based synthetic resin binder for paints having a solid content of 40% and a hydroxyl value of 30 mgKOH / g, and NCO / OH
= 1: 1.1 a mixture containing an isocyanate prepolymer modified with ε-caprolactone,
The urethane-based synthetic resin binder for paint was dissolved in an appropriate solvent that could dissolve the isocyanate prepolymer and was applied to a polystyrene material.
50℃〜60℃の強制乾燥を行った後，密着性能試験を行
ったところ，上記ウレタン樹脂と同じ変成イソシアネー
トプレポリマーのみでポリスチレン素材に塗装し,50℃
〜60℃の強制乾燥をした被覆組成物よりも優れた密着
性，耐薬品性，耐湿性を有しており，塗装仕上がり外観
に不具合はなく，塗膜は多層構造を有していた。After forced drying at 50 ° C to 60 ° C, the adhesion performance test was performed. The polystyrene material was coated with only the same modified isocyanate prepolymer as the urethane resin above,
It had better adhesion, chemical resistance, and moisture resistance than the coating composition which was forcibly dried at 強制 60 ° C., had no defects in the finished appearance of the coating, and had a multilayer structure.
この実施例に用いたウレタン樹脂は，特に合成皮革調
の意匠性を発現する機能を持つものであり，単独では塗
装素材への密着性は悪いものである。本実施例では，合
成皮革調の意匠性を発現し，かつ塗装素材への密着性の
優れた多層構造を有する被覆組成物を得ることができ
た。The urethane resin used in this example has a function of exhibiting a design characteristic of synthetic leather in particular, and alone has poor adhesion to a coating material. In this example, a coating composition exhibiting a synthetic leather-like design and having a multilayer structure having excellent adhesion to a coating material was obtained.
実施例２ 主成分として,MMA,BMAよりなるメチルエチルケトン中
でのゲル分率が80％である平均粒子系５μｍの部分溶解
性合成樹脂微粒子20重量部をトルエン，メチルエチルケ
トン，メチルイソブチルケトンから成る混合溶剤80重量
部に溶解して部分溶解性アクリル系樹脂溶液100重量部
を得た。Example 2 A mixed solvent comprising toluene, methyl ethyl ketone, and methyl isobutyl ketone was prepared by mixing 20 parts by weight of partially soluble synthetic resin fine particles having an average particle size of 5 μm in a methyl ethyl ketone consisting of MMA and BMA having a gel fraction of 80% as a main component, and 5 μm. It was dissolved in 80 parts by weight to obtain 100 parts by weight of a partially soluble acrylic resin solution.
次に，固形分30％である塗料用アクリル系合成樹脂バ
インダー50重量部に対して上記部分溶解性アクリル系樹
脂溶液30重量部を混合し，塗料用アクリル系合成樹脂バ
インダーを溶解することのできる適切な溶剤で希釈し，
ポリスチレン素材に塗装した。Next, 30 parts by weight of the above partially soluble acrylic resin solution can be mixed with 50 parts by weight of the acrylic synthetic resin binder for paint having a solid content of 30% to dissolve the acrylic synthetic resin binder for paint. Dilute with an appropriate solvent,
Painted on polystyrene material.
50℃〜60℃の強制乾燥を行った後，密着性能試験を行
ったところ，上記アクリル樹脂のみでポリスチレン素材
に塗装し,50℃〜60℃の強制乾燥をした被覆組成物より
も優れた密着性，耐薬品性，耐湿性を有しており，塗装
仕上がり外観に不具合はなく，塗膜は多層構造を有して
いた。After forced drying at 50 ° C to 60 ° C, an adhesion test was performed. The adhesion was better than that of a coating composition that was applied to a polystyrene material using only the acrylic resin described above and forced dried at 50 ° C to 60 ° C. It had good resistance, chemical resistance, and moisture resistance, had no problems in the appearance of the finished paint, and had a multilayer structure.
以上述べたように本発明は,1種類以上の溶剤と，この
溶剤により部分的に溶解されて常温常圧で10％以上90％
以下のゲル分率を有する粒子であって、反応性を有する
官能基を有する１種類以上の部分溶解性合成樹脂微粒子
と、その部分溶解性合成樹脂微粒子と架橋反応可能な官
能基を有する１種類以上の塗料用合成樹脂バインダーと
からなることを特徴とする被覆組成物である。本発明は
このような特徴を有するので，塗料用合成樹脂バインダ
ーと部分溶解性合成樹脂微粒子との界面が化学的に結合
した機械的強度の大きな塗膜が得られ、したがって耐薬
品性や耐候性のような塗膜特性を向上できるばかりでな
く、１回の塗装によって安定した多層構造を有する塗膜
を形成することができる。これにより，それぞれの機能
を有する樹脂系の層で，複数の機能を実現する，多層構
造を有する高機能皮膜を安定に得ることができる。As described above, the present invention relates to one or more kinds of solvents and 10% or more and 90%
Particles having the following gel fraction, one or more kinds of partially soluble synthetic resin fine particles having a reactive functional group, and one kind having a functional group capable of crosslinking reaction with the partially soluble synthetic resin fine particles. A coating composition comprising the above synthetic resin binder for paint. Since the present invention has such characteristics, a coating film having high mechanical strength in which the interface between the synthetic resin binder for paint and the partially soluble synthetic resin fine particles is chemically bonded is obtained, and therefore, chemical resistance and weather resistance are obtained. Not only can improve the characteristics of the coating film, but also a coating film having a stable multilayer structure can be formed by one coating. This makes it possible to stably obtain a high-performance coating having a multilayer structure, which realizes a plurality of functions with a resin-based layer having each function.
Claims (5)
％以下のゲル分率を有する粒子であって、反応性を呈す
る官能基を有する１種類以上の部分溶解性合成樹脂微粒
子と、 該部分溶解性合成樹脂微粒子と架橋反応可能な官能基を
有する１種類以上の塗料用合成樹脂バインダーと， からなることを特徴とする被覆組成物。(1) at least one kind of a solvent, which is partially dissolved by the solvent and which is 10% or more at room temperature and normal pressure;
% Or less, and at least one kind of partially soluble synthetic resin fine particles having a functional group exhibiting reactivity, and one or more particles having a functional group capable of crosslinking with the partially soluble synthetic resin fine particles. A coating composition comprising: at least one kind of synthetic resin binder for paint;
球状をしていることを特徴とする請求項１に記載の被覆
組成物。2. The coating composition according to claim 1, wherein said partially soluble synthetic resin fine particles have a uniform spherical shape.
径が30μｍ以下であることを特徴とする請求項１に記載
の被覆組成物。3. The coating composition according to claim 1, wherein the average particle diameter of the partially soluble synthetic resin fine particles is 30 μm or less.
可能な架橋性物質を含むことを特徴とする請求項１に記
載の被覆組成物。4. The coating composition according to claim 1, further comprising a crosslinkable substance capable of undergoing a crosslink reaction with the partially soluble synthetic resin fine particles.
成樹脂バインダーとが，それぞれのもつ官能基と架橋反
応可能な物質によって架橋されることを特徴とする請求
項１に記載の被覆組成物。5. The coating composition according to claim 1, wherein the partially soluble synthetic resin fine particles and the synthetic resin binder for paint are cross-linked by a substance capable of undergoing a cross-linking reaction with a functional group of each coating. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23283690A JP2905276B2 (en) | 1990-09-03 | 1990-09-03 | Coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23283690A JP2905276B2 (en) | 1990-09-03 | 1990-09-03 | Coating composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04114074A JPH04114074A (en) | 1992-04-15 |
| JP2905276B2 true JP2905276B2 (en) | 1999-06-14 |
Family
ID=16945556
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23283690A Expired - Fee Related JP2905276B2 (en) | 1990-09-03 | 1990-09-03 | Coating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2905276B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242866B (en) * | 2018-12-28 | 2023-06-09 | 日本瑞翁株式会社 | Binder composition for all-solid secondary battery |
-
1990
- 1990-09-03 JP JP23283690A patent/JP2905276B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04114074A (en) | 1992-04-15 |
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