JP2006028226A - Colorant composition - Google Patents
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Abstract
Description
本発明は、ポリプロピレン樹脂を成形加工と同時に着色し得る着色剤組成物であって、特にエラストマー成分を含有し、隠蔽性に優れた着色成形品を与える着色剤組成物に関する。 The present invention relates to a colorant composition that can color a polypropylene resin simultaneously with a molding process, and particularly relates to a colorant composition that contains an elastomer component and gives a colored molded article having excellent concealability.
近年、ポリエチレン、ポリ塩化ビニルなどの熱可塑性樹脂や、フェノール樹脂、ユリア樹脂などの熱硬化性樹脂などの各種合成樹脂は、工業材料および日常の家庭生活において便利で有用な材料として各種製品に広く利用されている。 In recent years, various synthetic resins such as thermoplastic resins such as polyethylene and polyvinyl chloride, and thermosetting resins such as phenolic resins and urea resins have been widely used in various products as industrial materials and useful and useful materials in everyday home life. It's being used.
これら樹脂の着色に際しては、従来、樹脂と顔料とを押出機などで溶融混練して着色樹脂ペレットとし、これを成形して着色する方法、あるいは未着色ペレットと顔料とを成形時に混練し、成形加工と同時に着色する方法などが用いられている。 When coloring these resins, conventionally, the resin and the pigment are melt-kneaded with an extruder or the like to form colored resin pellets, which are then molded and colored, or the uncolored pellets and the pigment are kneaded at the time of molding and molded. A method of coloring simultaneously with processing is used.
しかし、これらの着色方法では顔料が樹脂中に均一に分散されず、着色が不均一になるばかりか、成形品の表面も不均一となって滑らかに成形されないという欠点を有している。 However, these coloring methods have the disadvantages that the pigment is not uniformly dispersed in the resin, resulting in non-uniform coloring, and the surface of the molded product is non-uniform and cannot be smoothly molded.
そこで、最近では、成形すべき樹脂と同一の樹脂に顔料を混練して得られる着色剤組成物、すなわち、ドライカラー、マスターバッチなどが工業的に多く利用されている。これらドライカラーやマスターバッチは、この中に使用された樹脂と同種の樹脂に混練され、成形加工と同時に着色を行うものである。 Therefore, recently, a colorant composition obtained by kneading a pigment in the same resin as the resin to be molded, that is, a dry color, a masterbatch, and the like is widely used industrially. These dry colors and master batches are kneaded with the same type of resin used therein and colored simultaneously with the molding process.
しかし、これらの顔料および着色剤組成物を使用して着色した場合、樹脂に分散させる顔料粒子の粒径とその隠蔽性は相反する関係にあるため、粒径の小さな顔料においては隠蔽性が落ち、隠蔽性を高めるためには顔料添加量を高くすることが必要である。顔料のコストは、上記の各種合成樹脂と比べ高いため、コストアップの要因となっている。 However, when these pigments and colorant compositions are used for coloring, the particle size of the pigment particles dispersed in the resin and the hiding property are in a contradictory relationship. In order to improve the concealing property, it is necessary to increase the pigment addition amount. Since the cost of the pigment is higher than that of the above-mentioned various synthetic resins, it causes a cost increase.
ポリプロピレン樹脂などの結晶質樹脂にエラストマー成分などの非晶質物質を混合した際、海島構造と呼ばれるミクロ相分離状態になることが報告されている。 It has been reported that when an amorphous substance such as an elastomer component is mixed with a crystalline resin such as polypropylene resin, a microphase separation state called a sea-island structure is obtained.
カーボンブラックなどの顔料を、これらの混合物に分散させた場合、顔料はその非晶質物質のみに存在し、着色相を形成する。この際、そのミクロ相分離状態にある非晶質物質の存在粒径にあった着色粒径が得られる。 When a pigment such as carbon black is dispersed in these mixtures, the pigment is present only in the amorphous material and forms a colored phase. At this time, a colored particle size suitable for the existing particle size of the amorphous substance in the microphase separation state is obtained.
そこで、本発明の目的は、これらの性質を利用し、高い隠蔽性を有する着色成形品を与える着色剤組成物を提供することにある。 Therefore, an object of the present invention is to provide a colorant composition that uses these properties and gives a colored molded article having high concealing properties.
上述の目的は以下の本発明によって達成される。
１．ポリプロピレン樹脂０．０１〜９９．９７％（質量）と、顔料０．０１〜６０％（質量）と、エラストマー成分０．０１〜６０％（質量）と、分散剤０．０１〜４０％（質量）とを含有してなることを特徴とする着色剤組成物。尚、上記の「％（質量）」は着色剤組成物を「１００％（質量）」とした時の各成分の割合を示す。
２．前記ポリプロピレン樹脂のＭＩが、０．１〜３０（１９０℃、２．１６Ｋｇ）である前記１に記載の着色剤組成物。
３．前記顔料が、無機顔料の群から選択される一種または複数種である前記１に記載の着色剤組成物。
The above object is achieved by the present invention described below.
1. Polypropylene resin 0.01 to 99.97% (mass), pigment 0.01 to 60% (mass), elastomer component 0.01 to 60% (mass), and dispersant 0.01 to 40% (mass) And a coloring agent composition characterized by comprising: In addition, said "% (mass)" shows the ratio of each component when a colorant composition is made into "100% (mass)."
2. 2. The colorant composition according to 1, wherein the polypropylene resin has an MI of 0.1 to 30 (190 ° C., 2.16 Kg).
3. 2. The colorant composition as described in 1 above, wherein the pigment is one or more selected from the group of inorganic pigments.
４．前記顔料が、カーボンブラックである前記１に記載の着色剤組成物。
５．前記エラストマー成分のＭＩが、０．１〜５０（１９０℃、２．１６Ｋｇ）である前記１に記載の着色剤組成物。
６．前記エラストマー成分が、超低密度ポリエチレンである前記１に記載の着色剤組成物。
4). 2. The colorant composition as described in 1 above, wherein the pigment is carbon black.
5. 2. The colorant composition as described in 1 above, wherein MI of the elastomer component is 0.1 to 50 (190 ° C., 2.16 kg).
6). 2. The colorant composition as described in 1 above, wherein the elastomer component is ultra-low density polyethylene.
７．前記分散剤が、脂肪酸エステル系分散剤ワックスである前記１に記載の着色剤組成物。
８．前記脂肪酸エステル系分散剤ワックスが、アマイド系ワックスである前記７に記載の着色剤組成物。
7). 2. The colorant composition as described in 1 above, wherein the dispersant is a fatty acid ester dispersant wax.
8). 8. The colorant composition as described in 7 above, wherein the fatty acid ester dispersant wax is an amide wax.
本発明にかかる着色剤組成物は、ポリプロピレン樹脂と顔料とエラストマー成分と分散剤とを所定の比率で配合することにより得られ、該着色剤組成物によれば、隠蔽性が良好な着色成形品を与えることができる。 The colorant composition according to the present invention is obtained by blending a polypropylene resin, a pigment, an elastomer component, and a dispersant at a predetermined ratio, and according to the colorant composition, a colored molded article having good concealability. Can be given.
次に発明を実施するための最良の形態を挙げて本発明をさらに詳しく説明する。本発明に用いられるポリプロピレン樹脂としては、従来から用いられている通常のポリプロピレン樹脂であり、例えば、ホモポリマー、ブロックコポリマー、ランダムコポリマーのポリプロピレン樹脂が挙げられる。本発明ではこれらのポリプロピレン樹脂を単独であるいは複数種を組み合わせて使用される。 Next, the present invention will be described in more detail with reference to the best mode for carrying out the invention. The polypropylene resin used in the present invention is a conventional polypropylene resin conventionally used, and examples thereof include homopolymer, block copolymer, and random copolymer polypropylene resins. In this invention, these polypropylene resins are used individually or in combination of multiple types.
上記ポリプロピレン樹脂のうちでは、特にメルトインデックス（ＭＩ）が、０．１〜３０（１９０℃、２．１６Ｋｇ）のホモポリマーが好適である。より好ましいＭＩは１０〜２０である。上記ＭＩが０．１より小さい場合は、着色剤組成物と被着色材料との混練による混合が難しく、充分なミクロ相分離状態が得られないので好ましくない。一方、ＭＩが３０を超えると、着色剤組成物を押出機でペレット化する時の加工性が低下するので好ましくない。 Among the polypropylene resins, a homopolymer having a melt index (MI) of 0.1 to 30 (190 ° C., 2.16 kg) is particularly preferable. More preferable MI is 10-20. When the MI is less than 0.1, it is difficult to mix the colorant composition and the material to be colored by kneading, and a sufficient microphase separation state cannot be obtained. On the other hand, if MI exceeds 30, the processability when pelletizing the colorant composition with an extruder is lowered, which is not preferable.
さらに、本発明に用いられる顔料としては、例えば、酸化チタン、べんがら、鉛丹、カーボンブラックなどの無機顔料が挙げられる。本発明ではこれら無機顔料を単独で、あるいは複数種を組み合わせて使用される。特にカーボンブラックが好ましい。 In addition, examples of the pigment used in the present invention include inorganic pigments such as titanium oxide, red rose, red lead, and carbon black. In the present invention, these inorganic pigments are used alone or in combination. Carbon black is particularly preferable.
さらに、本発明に用いられるエラストマー成分としては、エチレン・プロピレンゴム、エチレン・ブテンゴムおよび超低密度ポリエチレン（ＶＬＤＰＥ）などが挙げられる。特にＭＩが０．１〜５０（１９０℃、２．１６Ｋｇ）の超低密度ポリエチレンが好適である。より好ましいＭＩは２０〜４０である。上記ＭＩが０．１より小さい場合は、着色剤組成物と被着色材料と混練による混合が難しく、着色成形品において充分なミクロ相分離状態が得られないので好ましくない。一方、ＭＩが５０を超えると、着色剤組成物のバンバリーミキサーなどでの混練時の加工性が低下するので好ましくない。 Furthermore, examples of the elastomer component used in the present invention include ethylene / propylene rubber, ethylene / butene rubber, and very low density polyethylene (VLDPE). In particular, an ultra-low density polyethylene having an MI of 0.1 to 50 (190 ° C., 2.16 Kg) is suitable. More preferable MI is 20-40. When the MI is less than 0.1, it is difficult to mix the colorant composition and the material to be colored by kneading, and a sufficient microphase separation state cannot be obtained in the colored molded product. On the other hand, if the MI exceeds 50, the processability during kneading of the colorant composition in a Banbury mixer or the like is unfavorable.
さらに、本発明に用いられる分散剤としては脂肪酸エステル系分散剤ワックスであるアマイド系ワックスなどが挙げられる。 Furthermore, examples of the dispersant used in the present invention include amide waxes which are fatty acid ester dispersant waxes.
本発明の着色剤組成物は上記成分を必須成分とする。ポリプロピレン樹脂は着色剤組成物中において０．０１〜９９．９７％（質量）を占める割合であり、好ましくは４０〜６０％（質量）を占める割合である。ポリプロピレン樹脂が０．０１％（質量）未満では、着色剤組成物のポリプロピレン樹脂への混合性が劣り加工性の点で好ましくない。一方、ポリプロピレン樹脂が９９．９７％（質量）を超えると、着色成形品においてミクロ相分離状態をとることが難しくなるので好ましくない。 The colorant composition of the present invention contains the above components as essential components. Polypropylene resin is the ratio which occupies 0.01-99.97% (mass) in a coloring agent composition, Preferably it is the ratio which occupies 40-60% (mass). If the polypropylene resin is less than 0.01% (mass), the mixing property of the colorant composition into the polypropylene resin is inferior, which is not preferable in terms of processability. On the other hand, if the polypropylene resin exceeds 99.97% (mass), it is difficult to achieve a microphase separation state in the colored molded product, which is not preferable.
顔料は着色剤組成物中において０．０１〜６０％（質量）を占める割合であり、好ましくは２０〜４０％（質量）を占める割合である。顔料が０．０１％（質量）未満では、着色剤組成物の着色力が低く、着色剤としても機能がなくなるので好ましくない。一方、顔料が６０％（質量）を超えると、着色剤組成物と被着色材料であるポリプロピレン樹脂との混合性が悪くなるので好ましくない。 A pigment is a ratio which occupies 0.01-60% (mass) in a colorant composition, Preferably it is a ratio which occupies 20-40% (mass). If the pigment is less than 0.01% (mass), the coloring power of the colorant composition is low, and the function as a colorant is lost. On the other hand, when the pigment exceeds 60% (mass), the mixing property between the colorant composition and the polypropylene resin as the material to be colored is deteriorated, which is not preferable.
また、エラストマー成分は着色剤組成物中において０．０１〜６０％（質量）を占める割合であり、好ましくは２０〜４０％（質量）を占める割合である。エラストマー成分が０．０１％（質量）未満では、着色成形品においてミクロ相分離状態をとることが難しくなるので好ましくない。一方、エラストマー成分が６０．０％（質量）を超えると、着色剤組成物と被着色材料であるポリプロピレン樹脂との混合性が悪くなるので好ましくない。 In addition, the elastomer component is a ratio that occupies 0.01 to 60% (mass) in the colorant composition, and preferably a ratio that occupies 20 to 40% (mass). If the elastomer component is less than 0.01% (mass), it is difficult to achieve a microphase separation state in the colored molded product, which is not preferable. On the other hand, when the elastomer component exceeds 60.0% (mass), the mixing property between the colorant composition and the polypropylene resin as the material to be colored is deteriorated, which is not preferable.
また、分散剤は、着色剤組成物中において０．０１〜４０％（質量）を占める割合であり、好ましくは０．１〜３％（質量）を占める割合である。分散剤が０．０１％（質量）未満では、分散剤の効果が不充分で顔料が分散不良となるので好ましくない。一方、分散剤が４０．０％（質量）を超えると、バンバリーミキサーでの着色剤組成物の加工時の加工性が悪くなるので好ましくない。 Moreover, a dispersing agent is a ratio which occupies 0.01 to 40% (mass) in a coloring agent composition, Preferably it is a ratio which occupies 0.1 to 3% (mass). If the dispersant is less than 0.01% (mass), the effect of the dispersant is insufficient and the pigment becomes poorly dispersed. On the other hand, if the dispersant exceeds 40.0% (mass), the processability of the colorant composition in the Banbury mixer is deteriorated, which is not preferable.
なお、本発明の着色剤組成物は上記成分以外に他の任意の成分、例えば、滑剤、帯電防止剤、紫外線吸収剤、酸化防止剤などの添加剤を必要に応じて添加してもよい。 In addition to the above components, the colorant composition of the present invention may contain other optional components, for example, additives such as a lubricant, an antistatic agent, an ultraviolet absorber, and an antioxidant as necessary.
上述の組成からなる本発明の着色剤組成物は、実用的には、まず、前記した組成比で顔料とエラストマー成分と分散剤とをバンバリーミキサーなどの混練機を用いて混練して混練物を得る。この際の混練温度は１００〜２００℃が好ましい。次いで、得られた混練物を前記した組成比でポリプロピレン樹脂とともに押出機などの適当な混練機で溶融混練することで得られる。この際の混練温度は１５０〜２５０℃が好ましい。このような着色剤組成物は着色剤マスターバッチとして使用され、特にポリプロピレン樹脂の着色成形に有用であり、高い隠蔽性と優れた表面平滑性を有する着色成形品が得られる。 The colorant composition of the present invention having the above-described composition is practically prepared by first kneading the pigment, the elastomer component, and the dispersant at the composition ratio described above using a kneader such as a Banbury mixer. obtain. The kneading temperature at this time is preferably 100 to 200 ° C. Subsequently, the obtained kneaded material is melt kneaded with an appropriate kneader such as an extruder together with the polypropylene resin at the composition ratio described above. The kneading temperature at this time is preferably 150 to 250 ° C. Such a colorant composition is used as a colorant masterbatch, and is particularly useful for color molding of polypropylene resin, and a colored molded product having high concealability and excellent surface smoothness can be obtained.
上述の着色剤マスターバッチによる未着色ポリプロピレン樹脂の着色成形は、該着色剤マスターバッチを最終成形品に要求される着色濃度に従って、未着色ポリプロピレン樹脂と混合し、各種の押出機、射出成形機などにより１５０℃〜３００℃の温度で行なうことができ、例えば、板状、フィルム状などの成形品が得られる。 Coloring molding of uncolored polypropylene resin by the above-mentioned colorant masterbatch is performed by mixing the colorant masterbatch with uncolored polypropylene resin in accordance with the color density required for the final molded product, various extruders, injection molding machines, etc. Can be performed at a temperature of 150 ° C. to 300 ° C., for example, a molded product such as a plate or film can be obtained.
以下、本発明の実施例を挙げ、比較例と比較しながら本発明を詳述する。なお、実施例および比較例中、「部」は質量部であり、「％」は質量％である。 Examples of the present invention will be described below, and the present invention will be described in detail while comparing with comparative examples. In Examples and Comparative Examples, “part” is part by mass, and “%” is mass%.
実施例１
カーボンブラック３５．０部、エラストマー成分（ＶＬＤＰＥ ＭＩ：２０）３４．０部、アマイド系分散剤ワックス０．８部および酸化防止剤０．２部をバンバリーミキサーを用いて混練する。
Example 1
35.0 parts of carbon black, 34.0 parts of an elastomer component (VLDPE MI: 20), 0.8 part of an amide dispersant wax and 0.2 part of an antioxidant are kneaded using a Banbury mixer.
得られた混練物７０部と、ポリプロピレン樹脂（ホモポリマー ＭＩ：１８）３０部とをヘンシェルミキサーで充分に混合後、押出機を用い、１５０℃〜２５０℃の温度で押出し混練造粒し、３×３ｍｍの大きさの円柱状着色剤マスターバッチを得る。 70 parts of the obtained kneaded product and 30 parts of polypropylene resin (homopolymer MI: 18) were sufficiently mixed with a Henschel mixer, and then extruded and kneaded and granulated at a temperature of 150 to 250 ° C. using an extruder. A columnar colorant masterbatch with a size of 3 mm is obtained.
この着色剤マスターバッチ５部を上記ポリプロピレン樹脂１００部と混合し、型締め圧力５０トンの射出成形機を用いて、１８０℃〜２２０℃の温度で成形加工と同時に着色し、５０×６０×２ｍｍの成形板を得る。この成形板について目視で隠蔽性を観察し、結果を表１に示した。 5 parts of this colorant masterbatch is mixed with 100 parts of the above polypropylene resin and colored simultaneously with the molding process at a temperature of 180 ° C. to 220 ° C. using an injection molding machine with a clamping pressure of 50 tons, and 50 × 60 × 2 mm. A molded plate is obtained. The formed plate was visually observed for concealment properties, and the results are shown in Table 1.
また、この成形板をカミソリなどを用いて切断し、その切断面を電子顕微鏡を用いて観察し、顔料−エラストマー成分のミクロ相分離状態を確認した。その結果を表１に示す。なお、表１中、１〜５はそれぞれ隠蔽性およびポリプロピレン樹脂中の顔料−エラストマー成分のミクロ相分離状態の程度を表し、数値が大きいほど良好であることを意味する。 Further, this molded plate was cut with a razor or the like, and the cut surface was observed with an electron microscope to confirm the microphase separation state of the pigment-elastomer component. The results are shown in Table 1. In Table 1, 1 to 5 represent the concealability and the degree of microphase separation of the pigment-elastomer component in the polypropylene resin, and the larger the value, the better.
表１から明らかなように、実施例１にかかる成形板は隠蔽性が良好である。また、実施例１のポリプロピレン樹脂中の顔料−エラストマー成分のミクロ相分離状態も良好である。 As is clear from Table 1, the molded plate according to Example 1 has good concealment properties. Further, the microphase separation state of the pigment-elastomer component in the polypropylene resin of Example 1 is also good.
実施例２
べんがら３５．０部、エラストマー成分（ＶＬＤＰＥ ＭＩ：２０）３４．０部、アマイド系分散剤０．８部および酸化防止剤０．２部をバンバリーミキサーを用いて混練する。
Example 2
35.0 parts of Bengala, 34.0 parts of an elastomer component (VLDPE MI: 20), 0.8 part of an amide dispersant and 0.2 part of an antioxidant are kneaded using a Banbury mixer.
得られた混練物７０部と、ポリプロピレン樹脂（ホモポリマー ＭＩ：１８）３０部とをヘンシェルミキサーで充分に混合の後、押出機を用い、１５０℃〜２５０℃の温度で押出し混練造粒し、３×３ｍｍの大きさの円柱状着色剤マスターバッチを得る。 70 parts of the obtained kneaded product and 30 parts of a polypropylene resin (homopolymer MI: 18) were sufficiently mixed with a Henschel mixer, and then extruded and kneaded and granulated at a temperature of 150 ° C. to 250 ° C. using an extruder. A columnar colorant masterbatch with a size of 3 × 3 mm is obtained.
この着色剤マスターバッチ５部を上記ポリプロピレン樹脂１００部と混合し、型締め圧力５０トンの射出成形機を用いて、１８０℃〜２２０℃の温度で成形加工と同時に着色し、５０×６０×２ｍｍの成形板を得る。この成形板について目視で隠蔽性を観察し、結果を表１に示した。 5 parts of this colorant masterbatch is mixed with 100 parts of the above polypropylene resin and colored simultaneously with the molding process at a temperature of 180 ° C. to 220 ° C. using an injection molding machine with a clamping pressure of 50 tons, and 50 × 60 × 2 mm. A molded plate is obtained. The formed plate was visually observed for concealment properties, and the results are shown in Table 1.
また、この成形板をカミソリなどを用いて切断し、その切断面を電子顕微鏡を用いて観察し、顔料−エラストマー成分のミクロ相分離状態を確認した。その結果を表１に示す。 Further, this molded plate was cut with a razor or the like, and the cut surface was observed with an electron microscope to confirm the microphase separation state of the pigment-elastomer component. The results are shown in Table 1.
表１から明らかなように、実施例２にかかる成形板は隠蔽性が良好である。また、実施例２のポリプロピレン樹脂中の顔料−エラストマー成分のミクロ相分離状態も良好である。 As is apparent from Table 1, the molded plate according to Example 2 has good concealing properties. Further, the microphase separation state of the pigment-elastomer component in the polypropylene resin of Example 2 is also good.
比較例１
実施例１と同じカーボンブラック３５．０部、ポリプロピレン樹脂（ホモポリマー ＭＩ：１８）６４部、アマイド系分散剤ワックス０．８部および酸化防止剤０．２部をバンバリーミキサーを用いて混練する。
Comparative Example 1
The same carbon black as in Example 1, 35.0 parts, 64 parts of polypropylene resin (homopolymer MI: 18), 0.8 part of amide dispersant wax and 0.2 part of antioxidant are kneaded using a Banbury mixer.
得られた混練物を押出機を用い、１５０℃〜２５０℃の温度で押出し混練造粒し、３×３ｍｍの大きさの円柱状着色剤マスターバッチを得る。 The obtained kneaded product is extruded and kneaded and granulated at a temperature of 150 ° C. to 250 ° C. using an extruder to obtain a columnar colorant master batch having a size of 3 × 3 mm.
この着色剤マスターバッチ５部を上記ポリプロピレン樹脂１００部と混合し、型締め圧力５０トンの射出成形機を用いて、１８０℃〜２２０℃の温度で成形加工と同時に着色し、５０×６０×２ｍｍの成形板を得る。この成形板について目視で着色濃度（隠蔽性）を観察し、結果を表２に示した。 5 parts of this colorant masterbatch is mixed with 100 parts of the above polypropylene resin and colored simultaneously with the molding process at a temperature of 180 ° C. to 220 ° C. using an injection molding machine with a clamping pressure of 50 tons, and 50 × 60 × 2 mm. A molded plate is obtained. With respect to this molded plate, the color density (hiding property) was visually observed, and the results are shown in Table 2.
表２から明らかなように、エラストマー成分を含まない比較例１の配合では充分な隠蔽性がない。 As is apparent from Table 2, the formulation of Comparative Example 1 containing no elastomer component does not have sufficient concealability.
比較例２
実施例１と同じカーボンブラック３５．０部、エラストマー成分（ＶＬＤＰＥ ＭＩ：２０）６４部、アマイド系分散剤ワックス０．８部および酸化防止剤０．２部をバンバリーミキサーを用いて混練する。
Comparative Example 2
The same carbon black 35.0 parts as in Example 1, 64 parts of an elastomer component (VLDPE MI: 20), 0.8 parts of an amide dispersant wax and 0.2 parts of an antioxidant are kneaded using a Banbury mixer.
得られた混練物を押出機を用い、１５０℃〜２５０℃の温度で押出し混練造粒し、３×３ｍｍの大きさの円柱状着色剤マスターバッチを得る。 The obtained kneaded product is extruded and kneaded and granulated at a temperature of 150 ° C. to 250 ° C. using an extruder to obtain a columnar colorant master batch having a size of 3 × 3 mm.
この着色剤マスターバッチ５部を前記ポリプロピレン樹脂１００部と混合し、型締め圧力５０トンの射出成形機を用いて、１８０℃〜２２０℃の温度で成形加工と同時に着色し、５０×６０×２ｍｍの成形板を得る。この成形板について目視で隠蔽性を観察し、結果を表２に示した。 5 parts of this colorant masterbatch is mixed with 100 parts of the polypropylene resin and colored simultaneously with the molding process at a temperature of 180 ° C. to 220 ° C. using an injection molding machine with a clamping pressure of 50 tons, 50 × 60 × 2 mm A molded plate is obtained. The formed plate was visually observed for concealment properties, and the results are shown in Table 2.
また、この成形板をカミソリなどを用いて切断し、その切断面を電子顕微鏡を用いて観察し、顔料−エラストマー成分のミクロ相分離状態を確認した。その結果を表２に示す。 Further, this molded plate was cut with a razor or the like, and the cut surface was observed with an electron microscope to confirm the microphase separation state of the pigment-elastomer component. The results are shown in Table 2.
表２から明らかなように、ポリプロピレン樹脂を含まない比較例２の配合では隠蔽性が充分でない。また、ポリプロピレン樹脂中の顔料−エラストマー成分のミクロ相分離状態が不充分である。 As is apparent from Table 2, the composition of Comparative Example 2 containing no polypropylene resin does not have sufficient concealment. Further, the microphase separation state of the pigment-elastomer component in the polypropylene resin is insufficient.
以上の通り、本発明にかかる着色剤組成物は、ポリプロピレン樹脂と顔料とエラストマー成分と分散剤とを所定の比率で配合することにより得られ、該着色剤組成物によれば、隠蔽性が良好な着色成形品を与えることができる。
As described above, the colorant composition according to the present invention is obtained by blending a polypropylene resin, a pigment, an elastomer component, and a dispersant in a predetermined ratio. According to the colorant composition, the concealability is good. Various colored molded articles can be provided.
Claims (8)
The colorant composition according to claim 7, wherein the fatty acid ester dispersant wax is an amide wax.
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| JP2004204978A JP2006028226A (en) | 2004-07-12 | 2004-07-12 | Colorant composition |
| US11/115,105 US20060009557A1 (en) | 2004-07-12 | 2005-04-27 | Colorant compositions and production process thereof |
| EP05009250A EP1616901A1 (en) | 2004-07-12 | 2005-04-27 | Colorant compositions and production process thereof |
| CN 200510077809 CN1721471A (en) | 2004-07-12 | 2005-06-09 | Colorant compositions and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006028227A (en) * | 2004-07-12 | 2006-02-02 | Dainichiseika Color & Chem Mfg Co Ltd | Manufacturing method of colorant composition |
| KR101091958B1 (en) | 2011-02-09 | 2011-12-08 | 주식회사 에스엠피테크닉스 | Sheet compositon for package or decoration |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06279629A (en) * | 1993-03-26 | 1994-10-04 | Dainichiseika Color & Chem Mfg Co Ltd | Colorant composition for olefinic thermoplastic elastomer |
| JPH07188577A (en) * | 1993-12-27 | 1995-07-25 | Porikoole Kogyo Kk | Coloring agent for thermoplstic polymer |
| JPH1060182A (en) * | 1996-08-26 | 1998-03-03 | Gurando Polymer:Kk | Polyolefin composition |
| JPH11158292A (en) * | 1997-11-26 | 1999-06-15 | Shingo Hishida | Granular colorant for plastic and its preparation |
| JP2001026653A (en) * | 1999-07-15 | 2001-01-30 | Dainippon Ink & Chem Inc | Colored resin pellet and preparation thereof |
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2004
- 2004-07-12 JP JP2004204978A patent/JP2006028226A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06279629A (en) * | 1993-03-26 | 1994-10-04 | Dainichiseika Color & Chem Mfg Co Ltd | Colorant composition for olefinic thermoplastic elastomer |
| JPH07188577A (en) * | 1993-12-27 | 1995-07-25 | Porikoole Kogyo Kk | Coloring agent for thermoplstic polymer |
| JPH1060182A (en) * | 1996-08-26 | 1998-03-03 | Gurando Polymer:Kk | Polyolefin composition |
| JPH11158292A (en) * | 1997-11-26 | 1999-06-15 | Shingo Hishida | Granular colorant for plastic and its preparation |
| JP2001026653A (en) * | 1999-07-15 | 2001-01-30 | Dainippon Ink & Chem Inc | Colored resin pellet and preparation thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006028227A (en) * | 2004-07-12 | 2006-02-02 | Dainichiseika Color & Chem Mfg Co Ltd | Manufacturing method of colorant composition |
| KR101091958B1 (en) | 2011-02-09 | 2011-12-08 | 주식회사 에스엠피테크닉스 | Sheet compositon for package or decoration |
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