JPH0665387A - Preparation of fine polymer particle in nonaqueous solvent - Google Patents
Preparation of fine polymer particle in nonaqueous solventInfo
- Publication number
- JPH0665387A JPH0665387A JP24601892A JP24601892A JPH0665387A JP H0665387 A JPH0665387 A JP H0665387A JP 24601892 A JP24601892 A JP 24601892A JP 24601892 A JP24601892 A JP 24601892A JP H0665387 A JPH0665387 A JP H0665387A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- solvent
- olefin resin
- aqueous solvent
- olefin
- 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.)
- Withdrawn
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- Compositions Of Macromolecular Compounds (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は非水溶媒中でのポリマー
微粒子の製法に関し、例えば充填材用あるいは色材用ポ
リマー微粒子の製法に好適に利用できる。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing polymer fine particles in a non-aqueous solvent, which can be suitably used for a method for producing polymer fine particles for fillers or coloring materials.
【０００２】[0002]
【従来の技術】充填材用あるいは色材用のポリマー微粒
子の製法としては、従来、粉砕法、重合法、析出法が知
られている。2. Description of the Related Art As a method for producing polymer fine particles for a filler or a coloring material, a pulverization method, a polymerization method and a precipitation method have been conventionally known.
【０００３】[0003]
【発明が解決しようとする課題】充填材用ポリマー微粒
子としては０．１〜１００μｍ程度、色材用としては湿
式トナーの場合０．１〜５μｍ、乾式トナーの場合５〜
１０μｍ程度のものが要望される。粉砕法によりポリマ
ーを５μｍ以下まで粉砕するには大きな粉砕エネルギー
が必要であり、また所望の粒径の微粒子の収率が低い。
さらに粉砕による微粒子化では粒度分布が幅広くなるこ
と、及び粒子の形状が一定の形にならないこと等の欠点
は避けられない。The polymer particles for the filler are about 0.1 to 100 μm, the colorant is 0.1 to 5 μm for the wet toner, and the dry toner is 5 to 5 μm.
A thickness of about 10 μm is required. Large pulverization energy is required to pulverize the polymer to 5 μm or less by the pulverization method, and the yield of fine particles having a desired particle size is low.
Further, in the case of pulverization into fine particles, there are unavoidable drawbacks such as a broad particle size distribution and a non-uniform particle shape.
【０００４】また、重合法によって均一な粒径のポリマ
ー微粒子を生成した例はあるが、重合条件は極めて複雑
であり、重合反応の制御が難しい。また、水系で重合し
た微粒子をインキや塗料のビヒクル中、あるいは非水溶
媒中に一次粒子で均一に分散させることは難しい。更に
非水系でのポリマー微粒子の重合に関していくつかの例
があるが、実用化までにはまだ日数を要する現状であ
る。Although there are examples in which polymer particles having a uniform particle size are produced by a polymerization method, the polymerization conditions are extremely complicated and it is difficult to control the polymerization reaction. Further, it is difficult to uniformly disperse the fine particles polymerized in an aqueous system as primary particles in a vehicle of an ink or paint or in a non-aqueous solvent. Further, there are some examples regarding the polymerization of polymer fine particles in a non-aqueous system, but it is a situation that it still takes days until practical use.
【０００５】樹脂の溶解度の温度依存性を利用して非水
系でポリマー微粒子を析出させる方法が従来から知られ
ているが、得られる樹脂微粒子の粒径は１０μｍ以上の
ものが殆どである。更に、樹脂の溶媒による溶解度の差
を利用して良溶媒中に樹脂を溶解した溶液中に、該樹脂
に対して貧溶媒を添加してポリマー微粒子を析出させる
方法が知られているが、貧溶媒中で析出した粒子は分散
安定性が悪く、凝集・合体するため分散安定な微粒子と
なりにくい。A method of precipitating polymer fine particles in a non-aqueous system by utilizing the temperature dependence of the solubility of the resin has been conventionally known, but most of the obtained resin fine particles have a particle size of 10 μm or more. Further, a method of adding a poor solvent to the resin in a solution prepared by dissolving the resin in a good solvent by utilizing the difference in the solubility of the resin depending on the solvent to precipitate polymer fine particles is known. The particles precipitated in the solvent have poor dispersion stability and are agglomerated and coalesced, which makes it difficult to obtain dispersion-stable fine particles.
【０００６】本発明はこのような現状に鑑み、従来より
も粒径が小さく、粒径分布も均一なポリマー微粒子を、
非水溶媒中で製造できる製法を目的としてなされたもの
である。In view of the above situation, the present invention provides polymer fine particles having a smaller particle size and a uniform particle size distribution as compared with conventional ones.
It was made for the purpose of producing a non-aqueous solvent.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
の手段として、本発明はカルボキシル基又はエステル基
を有する第１のオレフィン系樹脂と、分散剤としてのカ
ルボキシル基又はエステル基を有する第２のオレフィン
系樹脂とを、該第１のオレフィン系樹脂と第２のオレフ
ィン系樹脂の良溶媒である第１の非水溶媒と、該第１の
オレフィン系樹脂の貧溶媒であり且つ該第２のオレフィ
ン系樹脂の良溶媒である第２の非水溶媒との混合溶媒中
に完全に溶解し、次いで該第１の非水溶媒を気化させる
ことにより該第２の非水溶媒中に該第１のオレフィン系
樹脂を析出させることを特徴とするポリマー微粒子の製
法を提供する。As a means for solving the above problems, the present invention provides a first olefin resin having a carboxyl group or an ester group and a second olefin resin having a carboxyl group or an ester group as a dispersant. A first non-aqueous solvent which is a good solvent for the first olefin resin and the second olefin resin, and a poor solvent for the first olefin resin, and Completely dissolved in a mixed solvent with a second non-aqueous solvent which is a good solvent for the olefinic resin, and then the first non-aqueous solvent is vaporized to form a second solvent in the second non-aqueous solvent. There is provided a method for producing fine polymer particles, which comprises depositing the olefin resin of item 1.
【０００８】[0008]
【作用】本発明の第１のオレフィン系樹脂及び本発明の
分散剤とする第２のオレフィン系樹脂は、カルボキシル
基又はエステル基を有するオレフィン系樹脂であり、第
１のオレフィン系樹脂、第２のオレフィン系樹脂共に第
１の非水溶媒例えばトルエン，ベンゼン等の芳香族系溶
媒、メチルエチルケトンなどのケトン類溶媒に対して可
溶である。また、第２の非水溶媒例えばノルマル又はイ
ソパラフィン系炭化水素溶媒に対しては、第１のオレフ
ィン系樹脂は不溶又は難溶であり、第２のオレフィン系
樹脂は可溶である。このようにカルボキシル基及びエス
テル基を有するオレフィン系樹脂から、第１のオレフィ
ン系樹脂及び第２のオレフィン系樹脂と第１、第２の非
水溶媒の組合せが選ばれる。The first olefin resin of the present invention and the second olefin resin used as the dispersant of the present invention are olefin resins having a carboxyl group or an ester group. Is soluble in the first non-aqueous solvent such as an aromatic solvent such as toluene and benzene and a ketone solvent such as methyl ethyl ketone. The first olefin resin is insoluble or sparingly soluble and the second olefin resin is soluble in the second non-aqueous solvent such as a normal or isoparaffin hydrocarbon solvent. Thus, the combination of the first olefin resin and the second olefin resin with the first and second non-aqueous solvents is selected from the olefin resins having a carboxyl group and an ester group.
【０００９】本発明に使用するカルボキシル基又はエス
テル基を有するオレフィン系樹脂として具体的には、例
えばエチレン・酢酸ビニル共重合体、（メタ）アクリル
樹脂、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、スチレン・アクリル酸共重合体、ス
チレン・メタクリル酸共重合体、エチレン・アクリル酸
エステル共重合体、エチレン・メタクリル酸エステル共
重合体、スチレン・アクリル酸エステル共重合体、スチ
レン・メタクリル酸エステル共重合体等が挙げられる。
本発明の第１のオレフィン系樹脂、第２のオレフィン系
樹脂のいずれも、これらの中にかから選ばれ、それぞれ
１種又は必要に応じて分子量、分子構造の異なる２種以
上を混合して用いることができる。本発明において第１
のオレフィン系樹脂と第２のオレフィン系樹脂の割合
は、第１のオレフィン系樹脂１重量部に対して第２のオ
レフィン系樹脂０．０５〜１．０重量部が適切である。Specific examples of the olefin resin having a carboxyl group or an ester group used in the present invention include ethylene / vinyl acetate copolymers, (meth) acrylic resins, ethylene / acrylic acid copolymers, ethylene / methacryl. Acid copolymer, styrene / acrylic acid copolymer, styrene / methacrylic acid copolymer, ethylene / acrylic acid ester copolymer, ethylene / methacrylic acid ester copolymer, styrene / acrylic acid ester copolymer, styrene / Examples thereof include methacrylic acid ester copolymers.
The first olefin-based resin and the second olefin-based resin of the present invention are each selected from among these, and each may be used alone or as a mixture of two or more kinds having different molecular weights and molecular structures. Can be used. First in the present invention
The appropriate ratio of the olefin resin to the second olefin resin is 0.05 to 1.0 parts by weight of the second olefin resin with respect to 1 part by weight of the first olefin resin.
【００１０】本発明に使用できる第１の非水溶媒として
は、ベンゼン，トルエンなどの芳香族炭化水素、メチル
エチルケトンなどのケトン類、酢酸エステルなどのエス
テル類、エチルエーテル、テトラヒドロフランなどのエ
ーテル類が挙げられる。また、第２の非水溶媒としては
ｎ−ヘキサン，ｎ−ヘプタンなどのノルマルパラフィン
系炭化水素、商品名アイソパーＧ，Ｈ，Ｌ，Ｍ（Ｅｘｘ
ｏｎ社製）などのイソパラフィン系炭化水素などが挙げ
られる。本発明においては、第１の非水溶媒の蒸気圧が
第２の非水溶媒溶媒の蒸気圧より高いような組合せが好
ましい。また本発明に使用する第１の非水溶媒と第２の
非水溶媒は、相溶性であることが好ましく、第１の非水
溶媒と第２の非水溶媒との混合比は、上記第１のオレフ
ィン系樹脂が完全に溶解する範囲内で第２の非水溶媒の
比率をできるだけ高くすることが好ましい。Examples of the first non-aqueous solvent that can be used in the present invention include aromatic hydrocarbons such as benzene and toluene, ketones such as methyl ethyl ketone, esters such as acetic acid ester, ethers such as ethyl ether and tetrahydrofuran. To be Further, as the second non-aqueous solvent, normal paraffin hydrocarbons such as n-hexane and n-heptane, trade names Isopar G, H, L, M (Exx
on company) and other isoparaffinic hydrocarbons. In the present invention, a combination in which the vapor pressure of the first non-aqueous solvent is higher than the vapor pressure of the second non-aqueous solvent is preferable. Further, the first non-aqueous solvent and the second non-aqueous solvent used in the present invention are preferably compatible, and the mixing ratio of the first non-aqueous solvent and the second non-aqueous solvent is the above-mentioned It is preferable to make the ratio of the second non-aqueous solvent as high as possible within the range in which the olefin resin 1 is completely dissolved.
【００１１】第１のオレフィン系樹脂及び第２のオレフ
ィン系樹脂を混合溶媒に溶解後、第１の非水溶媒を気化
させる。第２の非水溶媒に対し第１のオレフィン系樹脂
は不溶又は難溶であり第２のオレフィン系樹脂は可溶で
ある。つまり第２の非水溶媒溶媒との親和性が第１のオ
レフィン系樹脂は小さく第２のオレフィン系樹脂は大き
いので、第１のオレフィン系樹脂が析出してポリマーシ
ードが生成するが、この瞬間に第２のオレフィン系樹脂
は該ポリマーシード表面に吸着して第２のオレフィン系
樹脂から成る吸着層を形成する。該第２のオレフィン系
樹脂からなる吸着層は非水溶媒（すなわち第１と第２の
非水溶媒の混合溶媒、又は第２の非水溶媒単独）中で第
１のオレフィン系樹脂の粒子が凝集・融着することを抑
制する作用を有する。以上のように第２のオレフィン系
樹脂の分散作用により第１のオレフィン系樹脂から生成
するポリマーシードがお互いに凝集・融着することなく
個々に成長するので、その大きさが小さく抑えられ、粒
径が１〜５μｍに抑えられた第１のオレフィン系樹脂の
微粒子が析出する。その結果、粉砕工程を経ることな
く、粒径１〜５μｍの分散安定性の良いポリマー微粒子
を非水溶媒中で形成することが可能となった。また、本
発明によるポリマー微粒子の粒度分布は、従来の粉砕法
によるものより著しく鋭く、重合法によるものとほぼ同
程度である（なお、いずれも分級しない状態での比
較）。After dissolving the first olefin resin and the second olefin resin in the mixed solvent, the first non-aqueous solvent is vaporized. The first olefin resin is insoluble or sparingly soluble in the second non-aqueous solvent, and the second olefin resin is soluble. That is, since the first olefin resin has a small affinity and the second olefin resin has a large affinity with the second non-aqueous solvent solvent, the first olefin resin is deposited to form a polymer seed. Secondly, the second olefin resin is adsorbed on the surface of the polymer seed to form an adsorption layer made of the second olefin resin. The adsorption layer made of the second olefin-based resin contains particles of the first olefin-based resin in a non-aqueous solvent (that is, a mixed solvent of the first and second non-aqueous solvents or the second non-aqueous solvent alone). It has an action of suppressing aggregation and fusion. As described above, the polymer seeds generated from the first olefin-based resin grow individually without being agglomerated / fused to each other by the dispersing action of the second olefin-based resin, so that the size can be suppressed to be small and Fine particles of the first olefin resin whose diameter is suppressed to 1 to 5 μm are deposited. As a result, it became possible to form fine polymer particles having a particle size of 1 to 5 μm and good dispersion stability in a non-aqueous solvent without going through a pulverizing step. Further, the particle size distribution of the polymer fine particles according to the present invention is significantly sharper than that obtained by the conventional pulverization method, and is substantially the same as that obtained by the polymerization method (both comparisons in the state where no classification is performed).
【００１２】第１の非水溶媒の気化の手段としては、
第１のオレフィン系樹脂のガラス転移点（Ｔｇ）以下の
温度で真空脱気する方法（Ｔｇ以下の温度であれば必要
に応じて加温してよい）、減圧状態にした容器中にＴ
ｇ以下の温度で、第１の非水溶媒と第２の非水溶媒溶媒
との混合溶媒中に第１の樹脂微粒子を分散した分散溶液
をスプレーする方法、などがある。また、カチオン性，
アニオン性あるいはノニオン性の界面活性剤、分散剤を
第１のオレフィン系樹脂の析出前後に加えても差し支え
ない。The first means for vaporizing the non-aqueous solvent is as follows:
A method of vacuum degassing at a temperature lower than the glass transition point (Tg) of the first olefin-based resin (heat may be applied if necessary at a temperature lower than Tg), T in a depressurized container.
There is a method of spraying a dispersion solution in which the first resin fine particles are dispersed in a mixed solvent of the first non-aqueous solvent and the second non-aqueous solvent solvent at a temperature of g or less. Also, cationic,
Anionic or nonionic surfactants and dispersants may be added before and after the deposition of the first olefin resin.
【００１３】本発明においては、第１のオレフィン系樹
脂と第２のオレフィン系樹脂の組合せ及び配合比、第１
の非水溶媒と第２の非水溶媒の組合せ及び混合比、更に
非水溶媒の気化速度、撹拌速度、反応温度等の条件によ
り、析出するポリマー粒状の形状、粒径は異なってく
る。これらの具体的な例は後述する実施例に挙げる。In the present invention, the combination and blending ratio of the first olefin resin and the second olefin resin,
The shape and particle size of the precipitated polymer particles vary depending on the combination and mixing ratio of the non-aqueous solvent and the second non-aqueous solvent, the vaporization rate of the non-aqueous solvent, the stirring rate, the reaction temperature, and the like. Specific examples of these are given in Examples described later.
【００１４】本発明においては、必要に応じて樹脂に顔
料、染料等の着色剤を添加しても差し支えない。添加方
法としては、予め樹脂に加熱混練等の手段により着色剤
を添加しておくか、本発明の製造工程中の樹脂溶解時又
は樹脂１の析出開始前に溶液中に着色剤を添加する等の
手段によればよい。なお、更に着色剤のための分散剤を
添加することもできる。In the present invention, a coloring agent such as a pigment or a dye may be added to the resin if necessary. As the addition method, the colorant is added to the resin in advance by means such as heat kneading, or the colorant is added to the solution at the time of dissolving the resin during the production process of the present invention or before starting the precipitation of the resin 1. The means of. Further, a dispersant for the colorant may be added.
【００１５】[0015]
【実施例】以下本発明を具体例を挙げて説明するが、本
発明はこれらの例に限定されるものではない。また、以
下の例で「第１の樹脂」は「第１のオレフィン系樹脂」
を、「第２の樹脂」は「第２のオレフィン系樹脂」を意
味する。また各表中の部は重量部を表す。 〔実施例１〕還流冷却器と撹拌モーターを配置したセパ
ラブルフラスコを使用し、該フラスコ中に表１の各樹
脂、溶媒、顔料、顔料用分散剤を投入した。The present invention will be described below with reference to specific examples, but the present invention is not limited to these examples. In addition, in the following examples, "first resin" is "first olefin resin".
And "second resin" means "second olefin resin". Moreover, the part in each table represents a weight part. [Example 1] A separable flask equipped with a reflux condenser and a stirring motor was used, and each resin, solvent, pigment and dispersant for pigment shown in Table 1 were charged into the flask.
【００１６】[0016]
【表１】 [Table 1]
【００１７】次に、撹拌及び必要に応じて加熱しなが
ら、第１の樹脂、第２の樹脂を完全に溶解した後、温度
４０℃に保ちながらエバポレーターを用いて、１０Ｔｏ
ｒｒの真空度で２０分間、第１の溶媒を気化させて、第
１の樹脂から成りカーボンブラックで着色されたポリマ
ー微粒子を析出させた。収率９８％であった。このよう
にして得られたポリマー微粒子は図１の電子顕微鏡写真
（５０００倍）に示すような粒子であり、平均粒径１．
８μｍであった。Next, the first resin and the second resin are completely dissolved while stirring and heating as necessary, and then 10 To is obtained by using an evaporator while maintaining the temperature at 40 ° C.
The first solvent was vaporized at a vacuum degree of rr for 20 minutes to deposit polymer particles made of the first resin and colored with carbon black. The yield was 98%. The polymer fine particles thus obtained are particles as shown in the electron micrograph (5000 times) of FIG. 1, and have an average particle size of 1.
It was 8 μm.
【００１８】〔比較例１〕還流冷却器と撹拌モーターを
配置したセパラブルフラスコを使用し、該フラスコ中に
表２の各樹脂、溶媒、顔料、顔料用分散剤を投入した。
表中の部は重量部を表す。Comparative Example 1 A separable flask equipped with a reflux condenser and a stirring motor was used, and the resins, solvents, pigments and dispersants for pigments shown in Table 2 were placed in the flask.
Parts in the table represent parts by weight.
【００１９】[0019]
【表２】 [Table 2]
【００２０】次に、実施例１と同様に操作して、第１の
樹脂から成りカーボンブラックで着色したポリマー粒子
を析出させた。このようにして第２の樹脂を加えずに得
られたポリマー粒子は、図２の電子顕微鏡写真（１００
０倍）に示すように、平均粒径４０μｍの大きな粒子で
あった。また収率は９６％であった。Next, in the same manner as in Example 1, polymer particles made of the first resin and colored with carbon black were deposited. The polymer particles thus obtained without adding the second resin are the electron micrographs (100
(0 times), the particles were large particles having an average particle diameter of 40 μm. The yield was 96%.
【００２１】[0021]
【発明の効果】以上説明のように、本発明によれば、第
１のオレフィン系樹脂から成る粒径１〜５μｍの分散安
定性に優れたポリマー微粒子を製造できる。本発明の製
法は従来の粉砕法による粒子に較べて粒子径及び粒子形
が揃って均一な粒子となり、また従来の重合法に較べて
ポリマー微粒子の生成条件を制御し易いため、再現性良
く、粒子を生成することができる。更に本発明は非水系
においてポリマー微粒子を生成させる方法であるため、
生成した微粒子をインキや塗料のビヒクル中あるいは有
機溶媒中に分散させることが容易であるという効果を有
する。Industrial Applicability As described above, according to the present invention, it is possible to produce fine polymer particles of the first olefin resin having a particle size of 1 to 5 μm and excellent in dispersion stability. The production method of the present invention has uniform particle diameter and particle shape compared to particles by a conventional pulverization method and becomes uniform particles, and since it is easy to control the production conditions of polymer fine particles as compared with a conventional polymerization method, good reproducibility, Particles can be generated. Furthermore, since the present invention is a method for producing fine polymer particles in a non-aqueous system,
It has an effect that it is easy to disperse the generated fine particles in the vehicle of the ink or paint or in the organic solvent.
【図１】本発明の実施例で得られたポリマー微粒子構造
を示す図面に代わる電子顕微鏡写真（５０００倍）であ
る。FIG. 1 is an electron micrograph (5000 times) showing a structure of polymer fine particles obtained in an example of the present invention instead of a drawing.
【図２】本発明の比較例で得られたポリマー粒子構造を
示す図面に代わる電子顕微鏡写真（１０００倍）であ
る。FIG. 2 is an electron micrograph (1000 times), which is a drawing and shows a polymer particle structure obtained in a comparative example of the present invention.
【手続補正書】[Procedure amendment]
【提出日】平成４年１０月１日[Submission date] October 1, 1992
【手続補正１】[Procedure Amendment 1]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】０００９[Correction target item name] 0009
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【０００９】本発明に使用するカルボキシル基又はエス
テル基を有するオレフィン系樹脂として具体的には、例
えばエチレン・酢酸ビニル共重合体、（メタ）アクリル
樹脂、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、スチレン・アクリル酸共重合体、ス
チレン・メタクリル酸共重合体、エチレン・アクリル酸
エステル共重合体、エチレン・メタクリル酸エステル共
重合体、スチレン・アクリル酸エステル共重合体、スチ
レン・メタクリル酸エステル共重合体等が挙げられる。
本発明の第１のオレフィン系樹脂、第２のオレフィン系
樹脂のいずれも、これらの中から選ばれ、それぞれ１種
又は必要に応じて分子量、分子構造の異なる２種以上を
混合して用いることができる。本発明において第１のオ
レフィン系樹脂と第２のオレフィン系樹脂の割合は、第
１のオレフィン系樹脂１重量部に対して第２のオレフィ
ン系樹脂０．０５〜１．０重量部が適切である。Specific examples of the olefin resin having a carboxyl group or an ester group used in the present invention include ethylene / vinyl acetate copolymers, (meth) acrylic resins, ethylene / acrylic acid copolymers, ethylene / methacryl. Acid copolymer, styrene / acrylic acid copolymer, styrene / methacrylic acid copolymer, ethylene / acrylic acid ester copolymer, ethylene / methacrylic acid ester copolymer, styrene / acrylic acid ester copolymer, styrene / Examples thereof include methacrylic acid ester copolymers.
Any of the first olefin resin, the second olefin resin of the present invention are selected either of these, et al., Molecular weight, a mixture of two or more different molecular structure is used, if the respective one or require be able to. In the present invention, the proportion of the first olefin resin and the second olefin resin is appropriately 0.05 to 1.0 parts by weight of the second olefin resin with respect to 1 part by weight of the first olefin resin. is there.
【手続補正２】[Procedure Amendment 2]
【補正対象書類名】明細書[Document name to be amended] Statement
【補正対象項目名】００１３[Correction target item name] 0013
【補正方法】変更[Correction method] Change
【補正内容】[Correction content]
【００１３】本発明においては、第１のオレフィン系樹
脂と第２のオレフィン系樹脂の組合せ及び配合比、第１
の非水溶媒と第２の非水溶媒の組合せ及び混合比、更に
非水溶媒の気化速度、撹拌速度、樹脂の析出温度等の条
件により、析出するポリマー粒子の形状、粒径は異なっ
てくる。これらの具体的な例は後述する実施例に挙げ
る。In the present invention, the combination and blending ratio of the first olefin resin and the second olefin resin,
Non-aqueous solvent and the combination and mixing ratio of the second non-aqueous solvent, further vaporization rate of the non-aqueous solvent, stirring speed, under the conditions of the precipitation temperature of the resin, the shape of the polymer particles child precipitated, the particle size different come. Specific examples of these are given in Examples described later.
Claims (1)
第１のオレフィン系樹脂と、分散剤としてのカルボキシ
ル基又はエステル基を有する第２のオレフィン系樹脂と
を、該第１のオレフィン系樹脂と第２のオレフィン系樹
脂の良溶媒である第１の非水溶媒と、該第１のオレフィ
ン系樹脂の貧溶媒であり且つ該第２のオレフィン系樹脂
の良溶媒である第２の非水溶媒との混合溶媒中に完全に
溶解し、次いで該第１の非水溶媒を気化させることによ
り該第２の非水溶媒中に該第１のオレフィン系樹脂を析
出させることを特徴とするポリマー微粒子の製法。1. A first olefin resin having a carboxyl group or an ester group, and a second olefin resin having a carboxyl group or an ester group as a dispersant, the first olefin resin and the second olefin resin. A first non-aqueous solvent which is a good solvent for the olefin resin, and a second non-aqueous solvent which is a poor solvent for the first olefin resin and a good solvent for the second olefin resin. A method for producing fine polymer particles, which comprises completely dissolving in a mixed solvent, and then vaporizing the first non-aqueous solvent to precipitate the first olefin resin in the second non-aqueous solvent. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24601892A JPH0665387A (en) | 1992-08-24 | 1992-08-24 | Preparation of fine polymer particle in nonaqueous solvent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24601892A JPH0665387A (en) | 1992-08-24 | 1992-08-24 | Preparation of fine polymer particle in nonaqueous solvent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0665387A true JPH0665387A (en) | 1994-03-08 |
Family
ID=17142236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24601892A Withdrawn JPH0665387A (en) | 1992-08-24 | 1992-08-24 | Preparation of fine polymer particle in nonaqueous solvent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0665387A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8636082B2 (en) | 2008-12-24 | 2014-01-28 | Nippon Sharyo, Ltd. | Pile driver |
-
1992
- 1992-08-24 JP JP24601892A patent/JPH0665387A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8636082B2 (en) | 2008-12-24 | 2014-01-28 | Nippon Sharyo, Ltd. | Pile driver |
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