JPH03210349A - Aqueous copolymer dispersion, preparation thereof, and coating film formed therefrom - Google Patents
Aqueous copolymer dispersion, preparation thereof, and coating film formed therefromInfo
- Publication number
- JPH03210349A JPH03210349A JP541290A JP541290A JPH03210349A JP H03210349 A JPH03210349 A JP H03210349A JP 541290 A JP541290 A JP 541290A JP 541290 A JP541290 A JP 541290A JP H03210349 A JPH03210349 A JP H03210349A
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- Prior art keywords
- ethylene
- acid copolymer
- partially neutralized
- copolymer
- acrylic acid
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Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は良好な密着性および良好な被膜形成性、特に厚
塗時における良好な被膜形成性を有するエチレン・α、
β−不飽和カルボン酸共重合体の水性分散体、その製造
方法および被膜に関する。Detailed Description of the Invention [Industrial Field of Application] The present invention provides ethylene α, which has good adhesion and good film forming properties, especially good film forming properties during thick coating.
The present invention relates to an aqueous dispersion of a β-unsaturated carboxylic acid copolymer, a method for producing the same, and a coating.
エチレン・アクリル酸共重合体またはエチレン・メタク
リル酸共重合体の部分中和物（アイオノマー）が各種の
基材と良く密着することは知られており、上記共重合体
の水性分散体を用いて各種基材の被覆を行うことも知ら
れている。It is known that partially neutralized products (ionomers) of ethylene/acrylic acid copolymer or ethylene/methacrylic acid copolymer adhere well to various substrates. It is also known to coat various substrates.
しかし、エチレン・アクリル酸共重合体に由来するアイ
オノマーの水分散体は、基材への塗布、焼付工程を経た
後に得られる塗膜に若干のベタツキが認められ、塗工量
の巻きとり、重ねあわせ等製品保管の点において必ずし
も充分でない。However, with the aqueous dispersion of ionomer derived from ethylene/acrylic acid copolymer, the coating film obtained after application to the substrate and baking process is slightly sticky, and the amount of coating may be reduced due to unrolling and overlapping. It is not always sufficient in terms of product storage such as matching.
一方、エチレン・メタクリル酸共重合体に由来するアイ
オノマーの水分散体は厚塗時において、基材上に水性分
散体を塗布し、水を蒸発させて乾燥被膜を形成させる際
、被膜に亀裂を生じやすい問題点がある。On the other hand, when an aqueous dispersion of an ionomer derived from an ethylene/methacrylic acid copolymer is coated thickly, cracks may occur in the coating when the aqueous dispersion is applied onto a substrate and the water is evaporated to form a dry coating. There are some problems that can easily occur.
本発明者はエチレン・アクリル酸共重合体に由来するア
イオノマーとエチレン・メタクリル酸共重合体に由来す
るアイオノマーの両者を含む水分散体がベタツキの無い
被膜を与え、厚塗時にも被膜に亀裂が生じにくい意外な
事実を発見し本発明を完成した。The present inventor has discovered that an aqueous dispersion containing both an ionomer derived from an ethylene/acrylic acid copolymer and an ionomer derived from an ethylene/methacrylic acid copolymer provides a non-sticky coating and prevents cracks in the coating even when applied thickly. We discovered an unexpected fact that is unlikely to occur and completed the present invention.
すなわち、本発明によれば、水分散性および被膜形成性
が良好で、厚塗した場合でも被膜に亀裂を生じることな
く、密着性、耐水性、防錆性などの良好な連続被膜を形
成することができ、しかも被膜の表面にベタツキが無く
、各種基材の被覆に適用可能な共重合体水性分散体、そ
の製造方法およびその水性分散体から形成される被膜が
提供される。That is, according to the present invention, the film has good water dispersibility and film forming properties, and forms a continuous film with good adhesion, water resistance, rust prevention, etc. without cracking the film even when thickly applied. Provided are an aqueous copolymer dispersion that can be coated on various substrates without stickiness on the surface of the coating, a method for producing the same, and a coating formed from the aqueous dispersion.
本発明は次の共重合体水性分散体、その製造方法および
被膜である。The present invention is the following copolymer aqueous dispersion, its manufacturing method, and coating.
（１）エチレン・アクリル酸共重合体の部分中和物（Ａ
）と、エチレン・メタクリル酸共重合体の部分中和物（
Ｂ）とが、（Ａ） ： （Ｂ）の重量比で２：８〜８：
２となるように水性媒体に分散した共重合体水性分散体
。(1) Partially neutralized product of ethylene/acrylic acid copolymer (A
) and partially neutralized ethylene/methacrylic acid copolymer (
B) and (A):(B) weight ratio of 2:8 to 8:
A copolymer aqueous dispersion dispersed in an aqueous medium so as to have the following properties.
（２）エチレン・アクリル酸共重合体の部分中和物（＾
）と、エチレン・メタクリル酸共重合体の部分中和物（
Ｂ）とが、（Ａ） ： （Ｂ）の重量比で２：８〜８：
２となるように水性媒体に分散した被膜形成用共重合体
水性分散体。(2) Partially neutralized product of ethylene/acrylic acid copolymer (^
) and partially neutralized ethylene/methacrylic acid copolymer (
B) and (A):(B) weight ratio of 2:8 to 8:
2. An aqueous dispersion of a film-forming copolymer dispersed in an aqueous medium so as to have the following properties.
（３）エチレン・メタクリル酸共重合体の部分中和物の
水性媒体中に、エチレン・アクリル酸共重合体の部分中
和物を分散させることを特徴とする共重合体分散体の製
造方法。(3) A method for producing a copolymer dispersion, which comprises dispersing a partially neutralized ethylene/acrylic acid copolymer in an aqueous medium of a partially neutralized ethylene/methacrylic acid copolymer.
（４）エチレン・アクリル酸共重合体の部分中和物（Ａ
）と、エチレン・メタクリル酸共重合体の部分中和物（
Ｂ）とが、（Ａ） Ｈ（Ｂ）の重量比で２：８〜８：２
となるように水性媒体に分散した共重合体分散体を、基
材上に塗布して形成された被膜。(4) Partially neutralized product of ethylene/acrylic acid copolymer (A
) and partially neutralized ethylene/methacrylic acid copolymer (
B) and (A) H (B) weight ratio of 2:8 to 8:2
A coating formed by applying a copolymer dispersion dispersed in an aqueous medium on a substrate so that
本発明において、エチレン・アクリル酸共重合体、エチ
レン・メタクリル酸共重合体は、エチレンとアクリル酸
、エチレンとα、β−メタクリル酸とをラジカル重合さ
せて得られる共重合体であり、これらと共重合可能な他
のモノマーをさらに共重合させたものでもよい。In the present invention, ethylene/acrylic acid copolymer and ethylene/methacrylic acid copolymer are copolymers obtained by radical polymerization of ethylene and acrylic acid, or ethylene and α,β-methacrylic acid. It may also be one obtained by further copolymerizing other copolymerizable monomers.
共重合体中のアクリル酸またはメタクリル酸の含有量は
、それぞれ通常５重量％〜４５重量％、好ましくは１０
重量％〜２５重量％である。アクリル酸またはメタクリ
ル酸の含有量が上記範囲より少ないと、水分散性が悪く
なって、粒径の小さい分散液が得られず、一方上記範囲
より多いと被膜の耐水性が低下する。The content of acrylic acid or methacrylic acid in the copolymer is usually 5% to 45% by weight, preferably 10% by weight.
% to 25% by weight. If the content of acrylic acid or methacrylic acid is less than the above range, the water dispersibility will be poor and a dispersion with a small particle size cannot be obtained, while if it is more than the above range, the water resistance of the coating will be reduced.
共重合体のＡＳＴＭ Ｄ １２３８によるＭＦＲ（１９
０℃）は、エチレン・アクリル酸共重合体が１〜４５０
０ｇ／１０■ｉｎ、好ましくは２０〜３０００ ｇ ／
１０ｗ１ｎ、エチレン・メタクリル酸共重合体が０．１
〜３０ｇ／１０ｍ１ｎ、好ましくは０．５〜１５ｇ／１
０ｍ１ｎが適当である。MFR of the copolymer according to ASTM D 1238 (19
0°C), the ethylene/acrylic acid copolymer is 1 to 450
0g/10inch, preferably 20-3000g/
10w1n, ethylene methacrylic acid copolymer is 0.1
~30g/10m1n, preferably 0.5-15g/1
0m1n is appropriate.
本発明のエチレン・アクリル酸共重合体またはエチレン
・メタクリル酸共重合体の部分中和物は、これらの共重
合体のカルボン酸基の一部をアルカリによって中和した
ものである。中和するアルカリとしては、水酸化ナトリ
ウム、水酸化カリウム等のアルカリ金属塩基が安定な水
分散体を形成するので好ましいが、その一部または全部
を水酸化カルシウム、水酸化亜鉛等のアルカリ土類塩基
、アンモニアその他の塩基によって置換してもよい。The partially neutralized ethylene/acrylic acid copolymer or ethylene/methacrylic acid copolymer of the present invention is obtained by neutralizing a part of the carboxylic acid groups of these copolymers with an alkali. As the alkali to be neutralized, alkali metal bases such as sodium hydroxide and potassium hydroxide are preferable because they form stable aqueous dispersions. It may be substituted with a base, ammonia or other base.
エチレン・アクリル酸共重合体またはエチレン・メタク
リル酸共重合体の中和度は被膜の密着性および水分散体
の安定性の観点から、通常全カルボン酸基の２０〜１０
０％、好ましくは３０〜８０％である。The degree of neutralization of the ethylene/acrylic acid copolymer or ethylene/methacrylic acid copolymer is usually 20 to 10% of the total carboxylic acid groups from the viewpoint of film adhesion and stability of the aqueous dispersion.
0%, preferably 30-80%.
中和の方法は、各共重合体を別々に中和してもよく、混
合状態で中和してもよい。As for the neutralization method, each copolymer may be neutralized separately or in a mixed state.
本発明の共重合体水性分散体は、前記エチレン・アクリ
ル酸共重合体の部分中和物（Ａ）と、エチレン・メタク
リル酸の部分中和物（Ｂ）とを、 （Ａ） Ｈ（Ｂ）の
重量比で２＝８〜８：２、好ましくは３ニア〜７：３に
なるように、水性媒体に分散させたものである、水性媒
体としては、水または水を主成分とする媒体があげられ
る。The copolymer aqueous dispersion of the present invention comprises a partially neutralized product (A) of the above-mentioned ethylene/acrylic acid copolymer and a partially neutralized product (B) of ethylene/methacrylic acid, (A) H(B) ) is dispersed in an aqueous medium at a weight ratio of 2 = 8 to 8:2, preferably 3 to 7:3. can be given.
エチレン・アクリル酸共重合体の組成比が前記範囲より
高くなると被膜にベタツキが生じて取扱が困難になり、
また前記範囲より低いと被膜形成性が低下し、厚塗時に
亀裂が生じる。If the composition ratio of the ethylene/acrylic acid copolymer is higher than the above range, the coating will become sticky and difficult to handle.
Moreover, if it is lower than the above range, film forming properties will be lowered and cracks will occur when thickly coated.
本発明の共重合体水性分散体を製造する方法としては、
既に部分中和された共重合体を、その融点以上に加熱さ
れた水中で撹拌下に分散する方法、あるいはエチレン・
アクリル酸共重合体およびエチレン・メタクリル酸共重
合体を前記の塩基性物質を含む加熱水中で撹拌する方法
などがある。エチレン・アクリル酸共重合体およびエチ
レン・メタクリル酸共重合体またはそれらの部分中和物
はそれぞれ混合状態で水に分散してもよく、それぞれを
分散した後混合してもよい。The method for producing the copolymer aqueous dispersion of the present invention includes:
A method of dispersing an already partially neutralized copolymer in water heated above its melting point, or dispersing the copolymer with stirring;
There is a method in which an acrylic acid copolymer and an ethylene/methacrylic acid copolymer are stirred in heated water containing the above-mentioned basic substance. The ethylene/acrylic acid copolymer, the ethylene/methacrylic acid copolymer, or a partially neutralized product thereof may be dispersed in water in a mixed state, or may be mixed after being dispersed.
好ましい製造方法は、エチレン・メタクリル酸共重合体
またはその部分中和物を水性媒体に分散させてエチレン
・メタクリル酸部分中和物の分散体を形成し、その分散
体にエチレン・アクリル酸共重合体またはその部分中和
物を加えてエチレン・アクリル酸部分中和物として分散
させる方法が好ましい、このような方法で分散させた共
重合体分散体は特に厚塗性が良好で、厚塗した場合にク
ラックが入りにくい連続被膜が形成される。A preferred production method is to disperse an ethylene/methacrylic acid copolymer or a partially neutralized product thereof in an aqueous medium to form a dispersion of a partially neutralized ethylene/methacrylic acid copolymer, and add ethylene/acrylic acid copolymer to the dispersion. A method of dispersing as a partially neutralized product of ethylene/acrylic acid by adding a combination or a partially neutralized product thereof is preferred.A copolymer dispersion dispersed by such a method has particularly good thick coating properties, and can be coated easily. In some cases, a continuous film is formed that is difficult to crack.
共重合体分散体中のエチレン・アクリル酸共重合体部分
中和物およびエチレン・メタクリル酸部分中和物の濃度
は特に制限はないが、両者の合計量で通常５〜５０重量
％、好ましくは１０〜４０重量％が適当である。共重合
体分散体の粘度は塗装作業性の観点から３０〜１０００
ｃＰｓ、好ましくは５０〜８００ｃＰｓが適当である。The concentration of partially neutralized ethylene/acrylic acid copolymer and partially neutralized ethylene/methacrylic acid in the copolymer dispersion is not particularly limited, but the total amount of both is usually 5 to 50% by weight, preferably 10 to 40% by weight is suitable. The viscosity of the copolymer dispersion is 30 to 1000 from the viewpoint of coating workability.
cPs, preferably 50 to 800 cPs is suitable.
本発明の共重合体水性分散体は、上記アイオノマーの水
性分散体を主成分とするが、必要によりさらに、例えば
被膜性能を向上させるための水溶性メラミン樹脂、水溶
性ベンゾグアナミン樹脂等の水溶性アミノ樹脂や水溶性
エポキシ樹脂；あるいは分散体の安定性を向上し、粘度
を調整するためのポリビニルアルコール、ポリビニルピ
ロリドン、ポリビニルメチルエーテル、ポリエチレンオ
キサイド、ポリアクリルアミド、ポリアクリル徴、カル
ボキシメチルセルロース、メチルセルロース、ヒドロキ
シエチルセルロース等の有機増粘剤；二酸化ケイ素、活
性白土、ベントナイト等の無機増粘剤；水分散液の安定
性を向上するためのノニオン系界面活性剤、アニオン系
界面活性剤等の界面活性剤；あるいは水溶性多価金属塩
類、その他防錆剤；防カビ剤；紫外線吸収剤；耐熱安定
剤；発泡剤；チタン白、ベンガラ、フタロシアニン、カ
ーボンブラック、パーマネントイエロー等の顔料；炭酸
カルシウム、炭酸マグネシウム、炭酸バリウム、タルク
、水酸化アルミニウム、硫酸カルシウム、カオリン、雲
母、アスベスト、マイカ、ケイ酸カルシウム等の充填剤
などを本発明の目的を損なわない範囲で配合してもよい
。The copolymer aqueous dispersion of the present invention has an aqueous dispersion of the above-mentioned ionomer as a main component, but if necessary, it may also contain water-soluble amino acids such as water-soluble melamine resin, water-soluble benzoguanamine resin, etc. to improve coating performance. Resins and water-soluble epoxy resins; or polyvinyl alcohol, polyvinyl pyrrolidone, polyvinyl methyl ether, polyethylene oxide, polyacrylamide, polyacrylic resin, carboxymethyl cellulose, methyl cellulose, hydroxyethyl cellulose to improve the stability of the dispersion and adjust the viscosity. organic thickeners such as; inorganic thickeners such as silicon dioxide, activated clay, bentonite; surfactants such as nonionic surfactants and anionic surfactants to improve the stability of aqueous dispersions; or Water-soluble polyvalent metal salts, other rust inhibitors; mold inhibitors; ultraviolet absorbers; heat stabilizers; foaming agents; pigments such as titanium white, red iron, phthalocyanine, carbon black, permanent yellow; calcium carbonate, magnesium carbonate, carbonic acid Fillers such as barium, talc, aluminum hydroxide, calcium sulfate, kaolin, mica, asbestos, mica, and calcium silicate may be added to the extent that the object of the present invention is not impaired.
上記により得られる共重合体水性分散体は、基材に塗布
して被膜を形成するために使用される。The aqueous copolymer dispersion obtained above is used to apply to a substrate to form a film.
基材としては特に制限はなく、被膜の目的も特に制限は
ない。There are no particular restrictions on the base material, and there are no particular restrictions on the purpose of the coating.
被膜の形成は、水性分散体を基材に塗布し、乾燥、硬化
させて基材上に被膜を形成する。水性分散体の塗布は、
スプレー、カーテン、フローコーター、ロールコータ−
１刷毛、浸漬等の方法により行うことができる。被膜の
厚さは乾燥被膜で１０μ１以上とすることができる。塗
布した後、自然乾燥させてもよいが、焼付を行うのが好
ましい。To form a film, an aqueous dispersion is applied to a base material, dried and cured to form a film on the base material. Application of the aqueous dispersion is
Spray, curtain, flow coater, roll coater
This can be done by a method such as brushing or dipping. The thickness of the dry film can be 10μ1 or more. After application, it may be allowed to air dry, but it is preferable to perform baking.
焼付温度は８０〜２５０℃で、２０秒ないし１０分間加
熱することにより良好な被膜が形成される。The baking temperature is 80 to 250°C, and a good film is formed by heating for 20 seconds to 10 minutes.
本発明の水性分散体は、ステンレス等の金属のコーティ
ング剤として好適であり、得られた被膜はステンレス等
の金属板に絞り成形性１表面保護性などを付与する。こ
のため自動車部品等の防錆被膜として有用である。この
ほか本発明の水性分散体は、アルミニウム箔等の金属箔
、紙、織物。The aqueous dispersion of the present invention is suitable as a coating agent for metals such as stainless steel, and the resulting coating imparts drawability, surface protection, etc. to metal plates such as stainless steel. Therefore, it is useful as a rust-preventive coating for automobile parts, etc. In addition, the aqueous dispersion of the present invention can be used in metal foils such as aluminum foils, paper, and textiles.
ガラス、合成樹脂フィルム等の基材に塗布され、耐水性
、ヒートシール性、強度の向上など種々の目的に使用す
ることができる。It is applied to base materials such as glass and synthetic resin films, and can be used for various purposes such as improving water resistance, heat sealability, and strength.
本発明の共重合体水性分散体は特定の共重合体を特定の
比率で組合せて水性媒体に分散させたので、水分散性、
被膜形成性が良好で、厚塗した場合でも被膜に亀裂が生
じることなく、密着性、耐水性、防錆性などに優れたベ
タツキの無い連続被膜を形成することができ、各種の基
材に適用可能である。The copolymer aqueous dispersion of the present invention has specific copolymers combined in a specific ratio and dispersed in an aqueous medium, so that it has excellent water dispersibility.
It has good film-forming properties, and even when applied thickly, it does not crack and can form a non-stick continuous film with excellent adhesion, water resistance, rust prevention, etc., and can be applied to various substrates. Applicable.
また本発明の製造方法によれば、特に厚塗性が良好で、
基材上に厚塗した場合でも亀裂が生じることなく、ベタ
ツキの無い優れた被膜が形成可能な共重合体水分散体を
製造することができる。In addition, according to the manufacturing method of the present invention, the thick coating property is particularly good,
It is possible to produce an aqueous copolymer dispersion that does not cause cracks even when coated thickly on a substrate and can form an excellent coating without stickiness.
さらに得られる被膜は密着性、耐水性、防錆性、絞り成
形性、表面保護性、ヒートシール性などに優れ、しかも
被膜の表面にベタツキが無く、これらの特性により種々
の目的に使用することが可能である。Furthermore, the resulting coating has excellent adhesion, water resistance, rust prevention, drawability, surface protection, heat sealability, etc., and has no stickiness on the surface of the coating, making it suitable for use for a variety of purposes. is possible.
次に、実施例をあげて本発明につき、具体的に説明する
。Next, the present invention will be specifically explained with reference to Examples.
実施例１
部分的に中和されたエチレン・アクリル酸共重合体（Ｍ
ＦＲ（１９０℃） ２６００ｇ／１０ｍ１ｎ、アクリル
酸含有量２０重量％、中和度５０％、中和剤水酸化ナト
リウム）１００ｇを２５０℃に溶融し、別途水０．３Ｑ
を装入して１７０℃に加熱した内容積ＩＱの耐圧ホモミ
キサーに１０００ｒｐ■で撹拌しながら約２時間で装入
した。Example 1 Partially neutralized ethylene-acrylic acid copolymer (M
FR (190°C) 2600g/10m1n, acrylic acid content 20% by weight, degree of neutralization 50%, neutralizing agent (sodium hydroxide) 100g is melted at 250°C, and 0.3Q water is added separately.
The mixture was charged into a pressure-resistant homomixer having an internal volume of IQ and heated to 170°C for about 2 hours while stirring at 1000 rpm.
さらに３０分撹拌しながら、室温まで冷却して得られた
水分散体（Ａ）の樹脂濃度は２５重量％、粘度は４５０
ｃＰｓ（２５℃）、平均粒径１．ｕｍ＋以下であった。The resin concentration of the aqueous dispersion (A) obtained by cooling to room temperature while stirring for an additional 30 minutes was 25% by weight, and the viscosity was 450%.
cPs (25°C), average particle size 1. It was below um+.
一方、部分的に中和されたエチレン・メタクリル酸共重
合体（ＭＦＲ（１９０℃）０．８ｇ／１０ｍ１ｎ、メタ
クリル酸含有量１５重量％、中和度５０％、中和剤水酸
化ナトリウム） １００ｇを用い、前記と同様の方法で
得た水分散体（Ｂ）は、樹脂濃度は２５重量％、粘度は
６００ｃＰｓ （２５℃）、平均粒径は１μ−以下であ
った。On the other hand, 100 g of partially neutralized ethylene/methacrylic acid copolymer (MFR (190°C) 0.8 g/10 m1n, methacrylic acid content 15% by weight, degree of neutralization 50%, neutralizing agent sodium hydroxide) The aqueous dispersion (B) obtained in the same manner as above had a resin concentration of 25% by weight, a viscosity of 600 cPs (at 25°C), and an average particle size of 1 μm or less.
次いで水分散体（＾）と水分散体（Ｂ）を７／３の重量
比で混合撹拌し、乾燥被膜で８ないし３９μ閣の膜厚と
なるようにアルミニウム箔に塗布し、７０℃で５分焼付
けた。得られた被膜の状態を肉眼観察し、クラック無し
く０）、およびクラック有（×）の基準で評価し、結果
を表１に示した。Next, the aqueous dispersion (^) and the aqueous dispersion (B) were mixed and stirred at a weight ratio of 7/3, coated on aluminum foil to a dry film thickness of 8 to 39 μm, and heated at 70°C for 50 minutes. I baked it separately. The state of the obtained film was observed with the naked eye and evaluated on the basis of 0) (no cracks) and 0 (x) with cracks, and the results are shown in Table 1.
実施例２〜４
実施例１の（Ａ） ／ （Ｂ）比を、それぞれ６／４．
５１５．４／６として、実施例１と同様の評価を行った
。結果を表１に示した。Examples 2 to 4 The (A)/(B) ratio of Example 1 was changed to 6/4.
515.4/6, and the same evaluation as in Example 1 was performed. The results are shown in Table 1.
比較例１〜２
実施例１の（Ａ）／（Ｂ）比を、それぞれ９／１．１／
９として、実施例１と同様の評価を行った。結果を表１
に示した。Comparative Examples 1 to 2 The (A)/(B) ratio of Example 1 was changed to 9/1.1/
9, the same evaluation as in Example 1 was performed. Table 1 shows the results.
It was shown to.
比較例３〜４
実施例１ （７） （Ａ） ／ （Ｂ）比を、それぞれ
１０１０．０／１０として、実施例１と同様の評価を行
った。結果を表１に示した。Comparative Examples 3 to 4 Example 1 (7) The same evaluation as in Example 1 was performed with the (A)/(B) ratio set to 1010.0/10, respectively. The results are shown in Table 1.
実施例５
実施例１で得た水分散体（Ｂ） ７０３ｇ、水１４４ｇ
、１０重量％の水酸化ナトリウム水溶液７０ｇ、および
実施例１で使用したエチレン・アクリル酸共重合体８４
ｇをオートクレーブに仕込み１回転数４００ｒｐ菖で１
５０℃、２時間加熱撹拌して水分散体を得た。Example 5 703 g of the aqueous dispersion (B) obtained in Example 1, 144 g of water
, 70 g of a 10% by weight aqueous sodium hydroxide solution, and 84 g of the ethylene/acrylic acid copolymer used in Example 1.
Put g into an autoclave and turn it at 400rpm.
The mixture was heated and stirred at 50° C. for 2 hours to obtain an aqueous dispersion.
次いで実施例１と同様の評価を行った。結果を表１に示
した。Next, the same evaluation as in Example 1 was performed. The results are shown in Table 1.
以上の結果より、比較例１および３ではベタツキがあり
、比較例２および４では厚塗性が悪いのに比べ、実施例
のものはいずれもベタツキがなく、厚塗性に優れている
ことがわかる。From the above results, it can be seen that Comparative Examples 1 and 3 were sticky and Comparative Examples 2 and 4 had poor thick coating properties, whereas the examples were all non-sticky and had excellent thick coating properties. Recognize.
Claims (4)
）と、エチレン・メタクリル酸共重合体の部分中和物（
Ｂ）とが、（Ａ）：（Ｂ）の重量比で２：８〜８：２と
なるように水性媒体に分散した共重合体水性分散体。(1) Partially neutralized product of ethylene/acrylic acid copolymer (A
) and partially neutralized ethylene/methacrylic acid copolymer (
An aqueous copolymer dispersion in which B) is dispersed in an aqueous medium at a weight ratio of (A):(B) of 2:8 to 8:2.
）と、エチレン・メタクリル酸共重合体の部分中和物（
Ｂ）とが、（Ａ）：（Ｂ）の重量比で２：８〜８：２と
なるように水性媒体に分散した被膜形成用共重合体水性
分散体。(2) Partially neutralized product of ethylene/acrylic acid copolymer (A
) and partially neutralized ethylene/methacrylic acid copolymer (
B) is dispersed in an aqueous medium at a weight ratio of (A):(B) of 2:8 to 8:2.
水性媒体中に、エチレン・アクリル酸共重合体の部分中
和物を分散させることを特徴とする共重合体分散体の製
造方法。(3) A method for producing a copolymer dispersion, which comprises dispersing a partially neutralized ethylene/acrylic acid copolymer in an aqueous medium of a partially neutralized ethylene/methacrylic acid copolymer.
）と、エチレン・メタクリル酸共重合体の部分中和物（
Ｂ）とが、（Ａ）：（Ｂ）の重量比で２：８〜８：２と
なるように水性媒体に分散した共重合体分散体を、基材
上に塗布して形成された被膜。(4) Partially neutralized product of ethylene/acrylic acid copolymer (A
) and partially neutralized ethylene/methacrylic acid copolymer (
A coating formed by applying a copolymer dispersion in which B) and (A) are dispersed in an aqueous medium at a weight ratio of 2:8 to 8:2 on a substrate. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP541290A JP2857902B2 (en) | 1990-01-12 | 1990-01-12 | Aqueous copolymer dispersion, method for producing the same, and coating film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP541290A JP2857902B2 (en) | 1990-01-12 | 1990-01-12 | Aqueous copolymer dispersion, method for producing the same, and coating film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03210349A true JPH03210349A (en) | 1991-09-13 |
| JP2857902B2 JP2857902B2 (en) | 1999-02-17 |
Family
ID=11610434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP541290A Expired - Fee Related JP2857902B2 (en) | 1990-01-12 | 1990-01-12 | Aqueous copolymer dispersion, method for producing the same, and coating film |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2857902B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000198949A (en) * | 1999-01-06 | 2000-07-18 | Du Pont Mitsui Polychem Co Ltd | Anticorrosive coating material and metallic material made anticorrosive |
| WO2024203578A1 (en) * | 2023-03-27 | 2024-10-03 | 三井化学株式会社 | Aqueous dispersion and multilayer body |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12435186B2 (en) * | 2021-12-16 | 2025-10-07 | Solenis Technologies, L.P. | Aqueous dispersions and methods for production |
-
1990
- 1990-01-12 JP JP541290A patent/JP2857902B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000198949A (en) * | 1999-01-06 | 2000-07-18 | Du Pont Mitsui Polychem Co Ltd | Anticorrosive coating material and metallic material made anticorrosive |
| WO2024203578A1 (en) * | 2023-03-27 | 2024-10-03 | 三井化学株式会社 | Aqueous dispersion and multilayer body |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2857902B2 (en) | 1999-02-17 |
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