JP2001081335A - Matting agent - Google Patents
Matting agentInfo
- Publication number
- JP2001081335A JP2001081335A JP26226799A JP26226799A JP2001081335A JP 2001081335 A JP2001081335 A JP 2001081335A JP 26226799 A JP26226799 A JP 26226799A JP 26226799 A JP26226799 A JP 26226799A JP 2001081335 A JP2001081335 A JP 2001081335A
- Authority
- JP
- Japan
- Prior art keywords
- matting agent
- particles
- cross
- average particle
- particle diameter
- 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.)
- Granted
Links
Abstract
Description
【発明の属する技術分野】本発明は、塗料の艶消し剤、
各種の表面処理剤、各種フィラー等に使用されるマット
剤に関する。TECHNICAL FIELD The present invention relates to a paint matting agent,
The present invention relates to a matting agent used for various surface treatment agents and various fillers.
【従来の技術】微粒子集合体は、塗料や各種の表面処理
剤に広く使用されており、材質も無機物および有機物の
両者において広く検討されている。例えば無機材料の微
粒子集合体においては、特開平１０−２３１１１９号公
報に記載されている様な多孔性アルミナ、特開平１０−
２５９０２３号公報に記載されている様な酸化チタン多
孔体、特開平１０−１８２４９１号公報に記載されてい
る様な多孔質炭酸カルシウムなどが知られている。しか
しながら、無機材料は基本的に真比重が有機材料に比べ
て大きく、マット剤としての性能を単位重量当たりで比
較すると、有機材料の方が優れている。また、塗料やフ
ィルムなど基材との親和性も低いという欠点を有してい
る。一方、有機材料の微粒子集合体においては、真比重
が無機材料に比べて小さく塗料やフィルムなどの基材と
の親和性も高いという利点を有しているものの、空隙率
が高く嵩比重の小さい集合体を作ることが困難であっ
た。また、無機材料に比べて耐熱性、耐溶剤性や強度が
劣るという問題点もあった。これらの問題点を解決でき
る方法として、架橋重合体微粒子を集合体とする方法が
考えられるが、これまで有効な方法は見い出だせていな
かった。例えば、特開平２−７０７４１号公報に記載さ
れている様に、不飽和カルボン酸を含む重合体を中和膨
潤させ種粒子として用い、それと異なる組成の重合体を
第２段階として乳化重合することにより集合体を得る方
法などが知られている。しかし、この方法では第２段階
の重合において新粒子が生成しない条件を選択する必要
があり重合組成や重合条件に限りがあると共に、集合体
の強度が弱く破壊されやすいという問題がある。以上の
様に従来においては、真比重が軽く基材との親和性も高
いという有機材料の特長を生かした有機微粒子集合体か
らなるマット剤は知られていなかった。2. Description of the Related Art Fine particle aggregates are widely used in paints and various surface treatment agents, and their materials have been widely studied for both inorganic and organic substances. For example, in a fine particle aggregate of an inorganic material, porous alumina as described in JP-A-10-231119,
A titanium oxide porous body as described in JP-A-259023, a porous calcium carbonate as described in JP-A-10-182491, and the like are known. However, the inorganic material basically has a higher true specific gravity than the organic material, and when the performance as a matting agent is compared per unit weight, the organic material is superior. Further, it has a drawback that it has a low affinity for a substrate such as a paint or a film. On the other hand, in a fine particle aggregate of an organic material, although the true specific gravity has an advantage that the affinity with a base material such as a paint or a film is high as compared with an inorganic material, the porosity is high and the bulk specific gravity is small. It was difficult to make an aggregate. There is also a problem that heat resistance, solvent resistance and strength are inferior to inorganic materials. As a method for solving these problems, a method in which crosslinked polymer fine particles are aggregated is considered, but no effective method has been found so far. For example, as described in JP-A-2-70741, a polymer containing an unsaturated carboxylic acid is neutralized and swelled and used as seed particles, and a polymer having a different composition is emulsion-polymerized as a second step. For example, a method of obtaining an aggregate by using the method is known. However, in this method, it is necessary to select conditions under which new particles are not generated in the polymerization in the second stage, and there are limitations on the polymerization composition and polymerization conditions, and there is a problem that the strength of the aggregate is weak and the aggregate is easily broken. As described above, hitherto, there has been no known matting agent comprising an aggregate of organic fine particles, which makes use of the characteristics of an organic material having a low true specific gravity and a high affinity for a substrate.
【発明が解決しようとする課題】本発明は上記の状況に
着目してなされたものであり、嵩比重が小さく、耐熱性
や耐溶剤性の高い、架橋重合体微粒子の集合体を含んで
なるマット剤を提供することを目的とするものである。SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and comprises an aggregate of crosslinked polymer fine particles having a low bulk specific gravity, a high heat resistance and a high solvent resistance. It is intended to provide a matting agent.
【課題を解決するための手段】本発明は、平均粒子径
０．０１〜１μｍの架橋重合体微粒子が集合してなる平
均粒子径２〜２００μｍの球状粒子を含んでなるマット
剤であることを要旨とするものである。前記球状粒子
は、例えば、平均粒子径０．０１〜１μｍの架橋重合体
微粒子を含むエマルジョンを、噴霧乾燥して得られる粒
子である。According to the present invention, there is provided a matting agent comprising spherical particles having an average particle diameter of from 2 to 200 .mu.m formed by assembling crosslinked polymer fine particles having an average particle diameter of from 0.01 to 1 .mu.m. It is an abstract. The spherical particles are, for example, particles obtained by spray-drying an emulsion containing fine crosslinked polymer particles having an average particle diameter of 0.01 to 1 μm.
【発明の実施の形態】本発明に用いる球状粒子は、その
材質、製法は特に限定されず、例えば、ジビニルベンゼ
ンおよび／またはトリメチロールプロパントリ（メタ）
アクリレートを含むビニル系単量体混合物を重合して得
られる架橋微粒子を、噴霧式乾燥方法によって乾燥させ
る方法により効率良く得られることを、本発明者らは、
先に見いだしている（特願平１０−２２０４１８号）。
該方法によれば、耐熱性や強度が高く、原料微粒子の形
状を保持した比表面積の大きい微粒子集合体が得られる
ことができる。また前記球状粒子の原料となる架橋重合
体微粒子は、架橋重合体を含んでなる微粒子であれば、
その組成および製法は特に限定されないが、例えば架橋
性単量体を含むビニル系単量体の混合物を、従来公知の
方法で乳化重合することにより製造することが可能であ
る。前記ビニル系単量体に含まれる架橋性単量体として
は、ジビニルベンゼンおよび／またはトリメチロールプ
ロパントリ（メタ）アクリレート等が挙げられる。前記
ビニル系単量体の混合物中に含まれてもいても良い架橋
性単量体以外の非架橋性単量体としては、１分子内に１
個の重合性不飽和結合を有する単量体であれば特に限定
されず、例えば、スチレンやαメチルスチレンなどの芳
香族ビニル化合物、（メタ）アクリル酸、（メタ）アク
リル酸メチルや（メタ）アクリル酸エチルや（メタ）ア
クリル酸ブチルなどの（メタ）アクリル酸エステル類、
酢酸ビニルやプロピオン酸ビニルなどのビニルエステル
類、（メタ）アクリロニトリルなどのビニルシアン化合
物、塩化ビニルや塩化ビニリデンなどのハロゲン化ビニ
ル化合物、ブタジエンなどの共役ジエン類などが用いら
れる。ビニル系単量体混合物中の架橋性単量体の比率が
高いほど、得られる微粒子の耐熱性や強度が高くなるの
で好ましいが、高すぎると粒子間の融着が起こりにく
く、集合体とするのが困難である。そのため、前記架橋
性単量体としてジビニルベンゼンを用いる場合には、ビ
ニル系単量体混合物中のジビニルベンゼンの重量比率
は、通常２〜１０重量％の範囲であり、好ましくは３〜
８重量％である。また前記架橋性単量体としてトリメチ
ロールプロパントリ（メタ）アクリレートを用いた場合
には、ビニル系単量体混合物中のトリメチロールプロパ
ントリ（メタ）アクリレートの重量比率は、通常５〜３
０重量％の範囲であり、好ましくは８〜２０重量％の範
囲である。前記架橋重合体の混合物を乳化重合方法によ
り製造する方法は特に限定されるものではなく、一般的
には、界面活性剤を用い、固形分濃度が５〜６０重量％
の範囲、開始剤として無機過酸化物あるいはレドックス
系開始剤を使用し、重合温度２０〜１００℃の範囲で実
施することが可能である。前記乳化重合方法により、平
均粒子径０．０１〜１μｍの範囲の架橋重合体微粒子が
簡便で効率良く得られる。得られた架橋重合体微粒子を
集合体とする方法は、特に限定されないが、噴霧式乾燥
方法によって乾燥して粒子間の融着を起こす方法が、集
合体の粒子径や形状の制御が容易であり推奨される。噴
霧式乾燥方法とは、一般的にスプレードライヤーや気流
乾燥機を用いて、ガス気流と共に水分散体を噴霧して粒
子を乾燥させる方法のことを言う。前記噴霧式乾燥方法
における固形分濃度、供給速度、乾燥温度などは適宜に
調節することにより、粒子径、粒子形状、かさ比重など
を調整することが可能であり、特に上記の条件に限定す
る必要はないが、例えば前記固形分濃度は、通常５〜６
０重量％であり、より好ましくは１０〜５０重量％であ
り、前記乾燥温度は、噴霧入口温度が１００〜２００℃
の範囲、粉体の出口温度が３０〜１００℃の範囲であ
る。本発明のマット剤の主体である微粒子集合体は、例
えば架橋重合体微粒子の形状を保持しながら該架橋重合
体微粒子が相互に連結した集合体である。前記微粒子集
合体は、粒子が球状で粒度分布もシャープである特長を
有している。また前記微粒子集合体は、比表面積が大き
くかさ比重が小さいという特長を有している。さらに前
記微粒子集合体は、従来の微粒子集合体に比べ、強度が
高いという特長を有している。また、本発明のマット剤
の主体である微粒子集合体の平均粒子径は、２〜２００
μｍの範囲である。好ましくは、５〜１００μｍの範囲
である。この範囲を外れた集合体では、マット剤に用い
た場合に効果が低下する傾向にある。本発明のマット剤
は、樹脂、塗料、接着剤、コーティング用樹脂などに配
合して使用することができる。また、使用に際して従来
公知のマット剤と併用しても何等差し支えはないが、前
記微粒子集合体がマット剤中に通常１０重量％以上、好
ましくは２０重量％以上の範囲で含有される。本発明の
マット剤を、塗料用添加剤として用いる場合には、通常
塗料に０．１〜１０重量％配合することにより、艶消し
剤としても使用することができる。本発明のマット剤
は、粒子１個当たりの重量が小さいので、従来のマット
剤に比べ少量の配合で効果を得ることができる。本発明
のマット剤を、樹脂用添加剤として用いる場合には、通
常各種の樹脂に０．１〜５重量％配合することにより、
艶消し剤、光拡散剤、アンチブロッキング剤あるいは充
填剤として使用することができる。粒子１個当たりの重
量が小さいので、少量の添加で大きな効果が得られると
共に、比表面積が大きいので、粒子１個当たりの効果も
大きい。本発明のマット剤を、紙用添加剤として用いる
場合には、比表面積が大きいので、紙面に付着したイン
ク滴が速やかに吸収されるという特徴があり、印刷した
場合に鮮明な画像を得ることができる。通常は高分子バ
インダーに対して１０〜３００重量部配合し、マット化
層の厚さを１〜５０μｍとする。本発明のマット剤を、
ハロゲン化銀写真感光材料用マット剤として用いる場合
には、粒子が球状で粒度分布もシャープであるので、ハ
ロゲン化銀写真感光材料用マット剤としても有用であ
る。通常の使用量は感光材料に対して０．０１〜１ｇ／
ｍ2である。BEST MODE FOR CARRYING OUT THE INVENTION The spherical particles used in the present invention are not particularly limited in the material and production method. For example, divinylbenzene and / or trimethylolpropane tri (meth)
The present inventors have found that crosslinked fine particles obtained by polymerizing a vinyl monomer mixture containing an acrylate can be efficiently obtained by a method of drying by a spray drying method.
It was found earlier (Japanese Patent Application No. 10-220418).
According to this method, it is possible to obtain a fine particle aggregate having high heat resistance and strength, and having a large specific surface area while maintaining the shape of the raw material fine particles. Further, the crosslinked polymer fine particles as a raw material of the spherical particles, if it is a fine particle containing a crosslinked polymer,
The composition and the production method are not particularly limited. For example, it can be produced by emulsion polymerization of a mixture of vinyl monomers containing a crosslinkable monomer by a conventionally known method. Examples of the crosslinkable monomer contained in the vinyl monomer include divinylbenzene and / or trimethylolpropane tri (meth) acrylate. As the non-crosslinkable monomer other than the crosslinkable monomer which may be contained in the mixture of the vinyl monomers, 1
The monomer is not particularly limited as long as it is a monomer having one polymerizable unsaturated bond. For example, aromatic vinyl compounds such as styrene and α-methylstyrene, (meth) acrylic acid, methyl (meth) acrylate and (meth) acrylate (Meth) acrylates such as ethyl acrylate and butyl (meth) acrylate,
Vinyl esters such as vinyl acetate and vinyl propionate, vinyl cyanide compounds such as (meth) acrylonitrile, vinyl halide compounds such as vinyl chloride and vinylidene chloride, and conjugated dienes such as butadiene are used. The higher the ratio of the crosslinkable monomer in the vinyl monomer mixture, the higher the heat resistance and strength of the obtained fine particles, which is preferable.However, if the ratio is too high, fusion between the particles hardly occurs and the aggregate is formed. Is difficult. Therefore, when divinylbenzene is used as the crosslinkable monomer, the weight ratio of divinylbenzene in the vinyl monomer mixture is usually in the range of 2 to 10% by weight, preferably 3 to 10% by weight.
8% by weight. When trimethylolpropane tri (meth) acrylate is used as the crosslinkable monomer, the weight ratio of trimethylolpropane tri (meth) acrylate in the vinyl monomer mixture is usually 5 to 3%.
It is in the range of 0% by weight, preferably in the range of 8 to 20% by weight. The method for producing the mixture of the crosslinked polymer by the emulsion polymerization method is not particularly limited, and generally, a surfactant is used and the solid content concentration is 5 to 60% by weight.
The polymerization can be carried out at a polymerization temperature of 20 to 100 ° C. using an inorganic peroxide or a redox initiator as an initiator. By the emulsion polymerization method, crosslinked polymer fine particles having an average particle diameter in the range of 0.01 to 1 μm can be obtained simply and efficiently. The method of forming the obtained crosslinked polymer fine particles into an aggregate is not particularly limited, but a method of drying by a spray-type drying method to cause fusion between the particles is easy to control the particle diameter and shape of the aggregate. Yes and recommended. The spray drying method generally refers to a method of drying particles by spraying an aqueous dispersion together with a gas stream using a spray dryer or a flash dryer. The particle diameter, particle shape, bulk specific gravity, and the like can be adjusted by appropriately adjusting the solid content concentration, the supply speed, the drying temperature, and the like in the spray drying method, and it is particularly necessary to limit the conditions to the above conditions. However, for example, the solid content concentration is usually 5 to 6
0% by weight, more preferably 10 to 50% by weight, and the drying temperature is such that the spray inlet temperature is 100 to 200 ° C.
And the outlet temperature of the powder is in the range of 30 to 100 ° C. The fine particle aggregate that is the main component of the matting agent of the present invention is, for example, an aggregate in which the crosslinked polymer fine particles are interconnected while maintaining the shape of the crosslinked polymer fine particles. The fine particle aggregate has a feature that the particles are spherical and the particle size distribution is sharp. Further, the fine particle aggregate has a feature that the specific surface area is large and the bulk specific gravity is small. Further, the fine particle aggregate has a feature that its strength is higher than that of a conventional fine particle aggregate. The average particle diameter of the fine particle aggregate that is the main component of the matting agent of the present invention is 2 to 200.
It is in the range of μm. Preferably, it is in the range of 5 to 100 μm. Aggregates outside this range tend to have lower effects when used in matting agents. The matting agent of the present invention can be used by being blended with a resin, a paint, an adhesive, a resin for coating, and the like. In use, the fine particle aggregate is usually contained in the matting agent in an amount of 10% by weight or more, preferably 20% by weight or more, although it may be used in combination with a conventionally known matting agent. When the matting agent of the present invention is used as a paint additive, it can be used as a matting agent by blending it in a paint in an amount of 0.1 to 10% by weight. Since the matting agent of the present invention has a small weight per particle, an effect can be obtained with a smaller amount of compounding than a conventional matting agent. When the matting agent of the present invention is used as a resin additive, it is usually added to various resins in an amount of 0.1 to 5% by weight,
It can be used as a matting agent, light diffusing agent, anti-blocking agent or filler. Since the weight per particle is small, a large effect can be obtained with a small amount of addition, and the effect per particle is large because the specific surface area is large. When the matting agent of the present invention is used as a paper additive, the specific surface area is large, so that the ink droplets attached to the paper surface are quickly absorbed, and a clear image is obtained when printed. Can be. Usually, 10 to 300 parts by weight are added to the polymer binder, and the thickness of the matting layer is 1 to 50 μm. The matting agent of the present invention,
When used as a matting agent for a silver halide photographic light-sensitive material, it is useful as a matting agent for a silver halide photographic light-sensitive material because the particles are spherical and have a sharp particle size distribution. The usual amount is 0.01 to 1 g / photosensitive material.
m 2 .
【実施例】以下、実施例により本発明を詳細に説明する
が、本発明はこれらの実施例に限定されるものではな
い。 製造例 撹拌機、温度計および還流冷却器付きの２Ｌセパラブル
フラスコに、純水（４３３ｇ）とハイテノールＮ０８
（第一工業製薬製アニオン界面活性剤、０．９ｇ）とを
仕込み、窒素置換を行いながら、撹拌下に７０℃まで昇
温した。７０℃に昇温後、メチルメタクリレート（５７
ｇ）を添加し、その５分後に、過硫酸カリウムの２％水
溶液（７０ｇ）を添加した。予め調製しておいたプレエ
マルション（メチルメタクリレート：６０８ｇ、ジビニ
ルベンゼン：３５ｇ、純水：７５２ｇ、ハイテノールＮ
０８：３４ｇ）を、過硫酸カリウム添加の２０分後より
７０℃にて等速度で４時間かけて添加した。添加終了
後、７５℃まで昇温し２時間の熟成を行い、その後、４
０℃まで冷却して架橋重合体エマルションを得た。この
エマルションの平均粒子径を光散乱式粒度分布計で測定
した所、０．２μｍであった。次いで、該エマルション
をヤマト科学製のスプレードライヤーで、 供給速度：１４ml/min、 噴霧圧：２．３kg/cm2、 風量：０．３m3/min、 加熱部入口温度：１５０℃、 加熱部出口温度：６０℃ の条件下にて乾燥して粉体を得た。得られた該粉体をマ
ルチサイザーII型（コールター社製）で測定したとこ
ろ、平均粒子径は１４μｍであった。また、該粉体は電
子顕微鏡（ＳＥＭ）観察によると、架橋重合体微粒子か
らなる原料微粒子が形状を保持したまま相互に連結して
なる微粒子集合体であった。 実施例１ 水４５ｇにノニオン系界面活性剤（三洋化成製「ノニポ
ール」、固形分２５重量％）０．５ｇを溶解させ、この
水溶液に、製造例で得られた微粒子集合体１５ｇをマッ
ト剤として添加しよく撹拌し分散させた。次いで該分散
液にポリウレタン系水分散塗料（第一工業製薬製「スー
パーフレックスＥ４７００」、固形分４０重量％）６０
ｇを加え均一に撹拌して塗料組成物を得た。該塗料組成
物をスプレー式塗布機にて、ＡＢＳ樹脂製プレートに膜
厚が約８０μｍになる様に塗布し、８０℃にて１時間乾
燥させた。乾燥後の塗膜の厚さは約３０μｍであり、塗
膜の６０度グロスは８５であった。 比較例１ 製造例で得られた微粒子集合体の代わりに、シリカ粉末
（トクヤマ製「レオロシールＭＴ−１０」）を用いた以
外は、実施例と同様の操作を繰り返して塗膜を得た。乾
燥後の塗膜の厚さは約３０μｍであり、乾燥後の塗膜の
６０度グロスは７５であった。EXAMPLES The present invention will be described in detail below with reference to examples, but the present invention is not limited to these examples. Production Example Pure water (433 g) and Hytenol N08 were placed in a 2 L separable flask equipped with a stirrer, thermometer and reflux condenser.
(Anionic surfactant, manufactured by Daiichi Kogyo Seiyaku Co., 0.9 g), and the temperature was raised to 70 ° C. with stirring while purging with nitrogen. After the temperature was raised to 70 ° C, methyl methacrylate (57
g) was added and 5 minutes later a 2% aqueous solution of potassium persulfate (70 g) was added. Pre-emulsion (methyl methacrylate: 608 g, divinylbenzene: 35 g, pure water: 752 g, Hytenol N
08:34 g) was added at 70 ° C. at a constant rate over 4 hours 20 minutes after the addition of potassium persulfate. After completion of the addition, the temperature was raised to 75 ° C. and aging was performed for 2 hours.
After cooling to 0 ° C., a crosslinked polymer emulsion was obtained. When the average particle size of this emulsion was measured with a light scattering type particle size distribution analyzer, it was 0.2 μm. Then, the emulsion was sprayed with a spray dryer manufactured by Yamato Scientific Co., Ltd., supply speed: 14 ml / min, spray pressure: 2.3 kg / cm 2 , air volume: 0.3 m 3 / min, heating unit inlet temperature: 150 ° C., heating unit outlet Drying was performed under the conditions of a temperature of 60 ° C. to obtain a powder. When the obtained powder was measured with a Multisizer II type (manufactured by Coulter Inc.), the average particle size was 14 μm. According to observation with an electron microscope (SEM), the powder was a fine particle aggregate in which raw material fine particles composed of crosslinked polymer fine particles were interconnected while maintaining the shape. Example 1 In 45 g of water, 0.5 g of a nonionic surfactant ("Nonpol" manufactured by Sanyo Chemical Industries, solid content: 25% by weight) was dissolved, and in this aqueous solution, 15 g of the fine particle aggregate obtained in the Production Example was used as a matting agent. The mixture was added, stirred well, and dispersed. Next, a polyurethane-based water-dispersed paint (“Superflex E4700” manufactured by Daiichi Kogyo Seiyaku, solid content 40% by weight) 60 was added to the dispersion.
g was added and stirred uniformly to obtain a coating composition. The coating composition was applied to an ABS resin plate so as to have a film thickness of about 80 μm by a spray coater, and dried at 80 ° C. for 1 hour. The thickness of the coating film after drying was about 30 μm, and the 60-degree gloss of the coating film was 85. Comparative Example 1 A coating film was obtained by repeating the same operation as in the example, except that a silica powder ("Reloseal MT-10" manufactured by Tokuyama) was used instead of the fine particle aggregate obtained in the production example. The thickness of the dried coating film was about 30 μm, and the 60 ° gloss of the dried coating film was 75.
【発明の効果】本発明のマット剤は、嵩比重が小さく、
耐熱性や耐溶剤性の高い特徴を有するので、樹脂、塗
料、接着剤、コーティング用樹脂などに用いるマット剤
として有用である。具体的には本発明のマット剤を、塗
料用添加剤として用いる場合には、艶消し剤の機能も発
現させることができ、従来のマット剤に比べ少量の配合
で効果を得ることができる。また本発明のマット剤を、
樹脂用添加剤として用いる場合には、艶消し剤、光拡散
剤、アンチブロッキング剤あるいは充填剤としての機能
も発現させることができ、少量の添加で大きな効果が得
られると共に、比表面積が大きいので、粒子１個当たり
の効果が大きい。また本発明のマット剤を、紙用添加剤
として用いる場合には、比表面積が大きいので、紙面に
付着したインク滴が速やかに吸収されるという特徴があ
り、印刷した場合に鮮明な画像を得ることができる。ま
た本発明のマット剤は、粒子が球状で粒度分布もシャー
プであるので、ハロゲン化銀写真感光材料用マット剤と
しても有用である。The matting agent of the present invention has a low bulk specific gravity,
Since it has characteristics of high heat resistance and solvent resistance, it is useful as a matting agent for resins, paints, adhesives, coating resins, and the like. Specifically, when the matting agent of the present invention is used as a paint additive, the function of a matting agent can be exhibited, and an effect can be obtained with a smaller amount of compounding than a conventional matting agent. Further, the matting agent of the present invention,
When used as a resin additive, it can also function as a matting agent, a light diffusing agent, an antiblocking agent or a filler, and a large effect can be obtained with a small amount of addition, and the specific surface area is large. The effect per particle is great. When the matting agent of the present invention is used as a paper additive, the specific surface area is large, so that the ink droplets attached to the paper surface are quickly absorbed, and a clear image is obtained when printed. be able to. Further, the matting agent of the present invention is useful as a matting agent for silver halide photographic light-sensitive materials because the particles are spherical and the particle size distribution is sharp.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 清水 修二 兵庫県姫路市網干区興浜字西沖992番地の １ 株式会社日本触媒内 (72)発明者 井上 雅史 兵庫県姫路市網干区興浜字西沖992番地の １ 株式会社日本触媒内 Ｆターム(参考） 4F070 AA06 AA17 AA18 AA22 AA28 AA29 AA32 AA34 DA34 DB06 DC07 DC13 4J002 AA00X BC01W BC04W BC07W BC09W BD05W BD10W BF02W BG01W BG03W BG09W BL01W FA08W GH01 GH02 GJ01 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shuji Shimizu 992 Nishioki, Okihama-ku, Abashiri-ku, Himeji-shi, Hyogo Prefecture Inside Nippon Shokubai Co., Ltd. F term in Nippon Shokubai (reference) 4F070 AA06 AA17 AA18 AA22 AA28 AA29 AA32 AA34 DA34 DB06 DC07 DC13 4J002 AA00X BC01W BC04W BC07W BC09W BD05W BD10W BF02W BG01W BG03W BG09W BL01W FA08W GH01GH
Claims (2)
体微粒子が集合してなる平均粒子径２〜２００μｍの球
状粒子を含んでなるマット剤。1. A matting agent comprising spherical particles having an average particle diameter of 2 to 200 μm obtained by assembling crosslinked polymer fine particles having an average particle diameter of 0.01 to 1 μm.
１μｍの架橋重合体微粒子を含むエマルジョンを、噴霧
乾燥して得られる粒子である請求項１記載のマット剤。2. The method according to claim 1, wherein the spherical particles have an average particle size of 0.01 to
The matting agent according to claim 1, wherein the matting agent is particles obtained by spray-drying an emulsion containing 1 µm crosslinked polymer fine particles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26226799A JP4298084B2 (en) | 1999-09-16 | 1999-09-16 | Matting agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26226799A JP4298084B2 (en) | 1999-09-16 | 1999-09-16 | Matting agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001081335A true JP2001081335A (en) | 2001-03-27 |
| JP4298084B2 JP4298084B2 (en) | 2009-07-15 |
Family
ID=17373426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26226799A Expired - Fee Related JP4298084B2 (en) | 1999-09-16 | 1999-09-16 | Matting agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4298084B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007262405A (en) * | 2006-03-15 | 2007-10-11 | Rohm & Haas Co | Aqueous compositions comprising polymeric duller particles |
-
1999
- 1999-09-16 JP JP26226799A patent/JP4298084B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007262405A (en) * | 2006-03-15 | 2007-10-11 | Rohm & Haas Co | Aqueous compositions comprising polymeric duller particles |
| JP2011208160A (en) * | 2006-03-15 | 2011-10-20 | Rohm & Haas Co | Aqueous composition containing polymer duller particle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4298084B2 (en) | 2009-07-15 |
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