JPH03244671A - Coloring agent composition and blow molded article colored therewith - Google Patents
Coloring agent composition and blow molded article colored therewithInfo
- Publication number
- JPH03244671A JPH03244671A JP4370990A JP4370990A JPH03244671A JP H03244671 A JPH03244671 A JP H03244671A JP 4370990 A JP4370990 A JP 4370990A JP 4370990 A JP4370990 A JP 4370990A JP H03244671 A JPH03244671 A JP H03244671A
- Authority
- JP
- Japan
- Prior art keywords
- polypropylene
- acid
- blow
- agent composition
- modified polypropylene
- 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
- 239000003086 colorant Substances 0.000 title claims abstract description 26
- 239000000203 mixture Substances 0.000 title claims abstract description 26
- -1 polypropylene Polymers 0.000 claims abstract description 59
- 239000004743 Polypropylene Substances 0.000 claims abstract description 58
- 229920001155 polypropylene Polymers 0.000 claims abstract description 58
- 239000000049 pigment Substances 0.000 claims abstract description 46
- 239000010445 mica Substances 0.000 claims abstract description 36
- 229910052618 mica group Inorganic materials 0.000 claims abstract description 36
- 238000004040 coloring Methods 0.000 claims abstract description 4
- 238000000071 blow moulding Methods 0.000 abstract description 21
- 239000011347 resin Substances 0.000 abstract description 10
- 229920005989 resin Polymers 0.000 abstract description 10
- 238000000465 moulding Methods 0.000 abstract description 8
- 125000000524 functional group Chemical group 0.000 abstract description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 abstract description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 2
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 abstract description 2
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical group O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 abstract description 2
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 abstract 1
- 239000011049 pearl Substances 0.000 description 43
- 238000000034 method Methods 0.000 description 8
- 239000004594 Masterbatch (MB) Substances 0.000 description 6
- 230000007547 defect Effects 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000002776 aggregation Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000004898 kneading Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000001000 micrograph Methods 0.000 description 2
- 101100334739 Mus musculus Fgfr3 gene Proteins 0.000 description 1
- 101100023124 Schizosaccharomyces pombe (strain 972 / ATCC 24843) mfr2 gene Proteins 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004931 aggregating effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- IRERQBUNZFJFGC-UHFFFAOYSA-L azure blue Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Na+].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[Al+3].[S-]S[S-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-].[O-][Si]([O-])([O-])[O-] IRERQBUNZFJFGC-UHFFFAOYSA-L 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003599 detergent Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 229940101545 mi-acid Drugs 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野］
本発明は、ポリプロピレン樹脂のブロー成形品にパール
外観を付与するための着色剤組成物及び該組成物でパー
ル着色されたポリプロピレン製ブロー成形品に関する。Detailed Description of the Invention [Industrial Application Field] The present invention relates to a colorant composition for imparting a pearlescent appearance to a blow-molded polypropylene resin product, and a blow-molded polypropylene product pearl-colored with the composition. Regarding.
従来、洗剤や化粧品等の容器には、ポリプロピレン製の
ブロー成形着色ボトルが用いられることが多い。この場
合、ボトルの成形方法としては、押出機タイプのブロー
成形機のホッパーにポリプロピレン樹脂と共に着色剤を
投入し、加熱、溶融、混練して着色パリソンを押出し、
次いで金型で着色パリソンを挟み、空気を吹込むことに
より、着色したボトルを成形する方法が採用されており
、かかる着色ボトルの製造に使用される着色剤としては
、ルチル型チタン、酸化鉄、群青等の無機顔料やアゾ系
、シアニン系等の有機顔料があり、これらの着色剤はポ
リプロピレン樹脂と十分に混練され、均一に分散して、
滑らかな表面（肌〉を有するパリソンが押出されるため
、色むら等のない良好な外観のボトルが得られ、優れた
商品価値を持つものである。BACKGROUND ART Conventionally, blow-molded colored bottles made of polypropylene are often used as containers for detergents, cosmetics, and the like. In this case, the bottle molding method involves putting the colorant together with polypropylene resin into the hopper of an extruder type blow molding machine, heating, melting, and kneading to extrude a colored parison.
Next, the colored parison is sandwiched between molds and air is blown into the mold to form a colored bottle.The coloring agents used to manufacture such colored bottles include rutile titanium, iron oxide, There are inorganic pigments such as ultramarine, and organic pigments such as azo and cyanine, and these colorants are thoroughly kneaded with polypropylene resin and dispersed uniformly.
Since a parison with a smooth surface (skin) is extruded, a bottle with a good appearance without uneven color etc. is obtained and has excellent commercial value.
しかし、最近は意匠性の面から容器にバール感を与える
ため、マイカ（雲母）製のパール顔料を使用してパール
着色することが多くなってきたが、従来と同様のブロー
成形法でポリプロピレン樹脂にマイカ製パール顔料を配
合してボトルを成形した場合、ボトルの縦方向く押出方
向）に数本或いは多数のスジがウェルド部を中心に発生
したり、色むら状にランダムに発生したり、更にはパー
ル顔料だけが部分的に凝集し、外観不良を生じさせる問
題がある。However, in recent years, pearl pigments made from mica have been used to create pearl colors in order to give containers a burly appearance from a design standpoint, but polypropylene resin is now being used using the same blow molding method as before. When a bottle is molded by blending mica pearl pigment into the bottle, several or many streaks may occur in the longitudinal direction of the bottle (in the extrusion direction), mainly in the weld area, or randomly in uneven colors. Furthermore, there is a problem in that only the pearl pigments partially aggregate, resulting in poor appearance.
即ち、第１図に示す如きブロー成形用押出機１のホッパ
ー２からポリプロピレン樹脂とマイカ製パール顔料とを
投入し、スクリュー３の回転と共にこれら成形材料が加
熱、溶融、混練されてホッパー２側からダイ４に向って
押出され、ダイノズル５よりパリソン（パイプ状押出物
）６が押出成形される際、押出運転時間の経過と共に第
２図に示したようにパリソン６が押出されるダイ４の内
表面壁７とコア８の外表面壁９にそれぞれマイカ製パー
ル顔料１０が混練物から分離して固着し、更に時間の経
過と共にパール顔料が凝集し、積重なっていくため、滑
らかなダイスとコアの表面が滑らかさを失ない、そこか
ら押出されるパリソン６に傷を付け、それが多数のスジ
となってブロー成形ボトルの外観を損なうことになる。That is, polypropylene resin and mica pearl pigment are charged from the hopper 2 of an extruder 1 for blow molding as shown in FIG. When the parison (pipe-shaped extrudate) 6 is extruded toward the die 4 and extruded from the die nozzle 5, as the extrusion operation time elapses, as shown in FIG. The mica pearl pigment 10 is separated from the kneaded material and adheres to the surface wall 7 and the outer surface wall 9 of the core 8, respectively, and as time passes, the pearl pigments aggregate and pile up, resulting in a smooth die and core. The surface does not lose its smoothness, and the parison 6 extruded from it is scratched, resulting in many streaks that spoil the appearance of the blow-molded bottle.
また、ホンパー２側からダイ４に向って押出される混練
物はブレーカ−プレート１１を通過させてごみ等を除去
するようになっているが、この際パール顔料のマイカは
鱗片状乃至は積層四辺形状であるためにプレーカープレ
ート１１に付けたスクリーンメツシュ表面にひっかかっ
たり、分離したパール顔料が樹脂との流動特性の相違に
よりスクリーンメツシュ最外部に集積したり、更には押
出機１のスクリュー３等に部分的に集積したりすること
があり、それらの集積物がランダムに排出されて、パー
ル顔料の部分的凝集となり、ボトルの外観不良を引き起
こすものである。In addition, the kneaded material extruded from the omper 2 side toward the die 4 passes through a breaker plate 11 to remove dust, etc., but at this time, mica, which is a pearl pigment, is in the form of scales or on all sides of the laminate. Due to its shape, it may get caught on the surface of the screen mesh attached to the player plate 11, the separated pearl pigment may accumulate on the outermost part of the screen mesh due to the difference in flow characteristics from the resin, and even the screw of the extruder 1 may get stuck. The pearl pigments may partially accumulate in the 3rd layer, etc., and the accumulated particles may be discharged randomly, resulting in partial agglomeration of the pearl pigments and causing poor appearance of the bottle.
なお、上述したような外観不良は、ブロー成形機投入前
にドライカラー、マスターバンチ等の着色剤によってカ
ラーコンパウンドした成形材料を使用しても、又はブロ
ー成形時にマスターバッチ等の着色剤を使用し、希釈樹
脂と混合して成形機に投入する方法でも、マイカ−製バ
ール顔料を使用する限り発生する。In addition, the above-mentioned appearance defects can occur even if the molding material is color-compounded with a colorant such as dry color or masterbatch before being put into the blow molding machine, or if a colorant such as a masterbatch is used during blow molding. Even if the mixture is mixed with a diluted resin and put into a molding machine, it will occur as long as mica-made Burr pigment is used.
このような問題を解決する方法としては、ダイス、コア
に固着したパール顔料の除去とブレーカ−プレート内の
スクリーンメツシュの交換を定期的に行なう方法がある
が、この方法は成形機の運転を停止して行なうため、稼
動率が低下する上、清掃、交換作業も面倒である。また
、ブロー成形押出機での加熱、溶融、混練を強力にする
ためスクリュー形状を変更したり、ダイスに押出圧力が
かかり過ぎないようにその構造を変更したり、マイカ製
パール顔料が混練物から分離しても固着しないような金
属を用いてダイス、コアを製作し、或いはダイス、コア
の壁面仕上げを行なう等の方法も考えられるが、これら
の方法は経済的な問題があり、またマイカ製パール顔料
を使用しないホモル成形に際しては何らの支障もないこ
とから、成形機の改良は得策ではない。One way to solve this problem is to periodically remove the pearl pigments stuck to the die and core and replace the screen mesh in the breaker plate, but this method requires the operation of the molding machine to be Since the process is stopped, the operating rate decreases, and cleaning and replacement work is also troublesome. In addition, the shape of the screw was changed to make heating, melting, and kneading more powerful in the blow molding extruder, and the structure was changed to avoid applying too much extrusion pressure to the die. Methods such as manufacturing the die and core using a metal that does not stick even when separated, or finishing the walls of the die and core can be considered, but these methods have economical problems, and mica Since there is no problem with homomolding without using pearl pigments, it is not a good idea to improve the molding machine.
本発明は上記事情に鑑みなされたもので、マイカ製パー
ル顔料を用いた場合に生しる上述した外観不良の問題を
解決することができ、通常のブロー成形機をそのまま使
用して良好なパール外観を有するポリプロピレン製ブロ
ー成形品を与えることができるマイカ製パール顔料含有
着色剤組成物及び該組成物でパール着色されたポリプロ
ピレン製ブロー威形品を提供することを目的とする。The present invention was made in view of the above circumstances, and can solve the problem of poor appearance described above that occurs when using mica pearl pigments, and can produce good pearls by using a normal blow molding machine as is. An object of the present invention is to provide a colorant composition containing a mica pearl pigment that can provide a polypropylene blow-molded article having a good external appearance, and a polypropylene blow-molded article pearl-colored with the composition.
〔課題を解決するための手段及び作用〕本発明者らは、
マイカ製パール顔料がブロー成形機のプレーカープレー
トやダイス、コア壁等に運転時間の経過と共に凝集、固
着し、これがポリプロピレン製ブロー成形品の外観不良
を発生させる問題を解決すべく鋭意検討を重ねた結果、
着色剤組成物としてマイカ製パール顔料に酸変性ポリプ
ロピレンを併用することが有効であることを知見した。[Means and effects for solving the problem] The present inventors,
We have conducted extensive research to solve the problem of mica pearl pigments aggregating and sticking to the blow molding machine's blow molding machine's blow molding plate, die, core wall, etc. over time, which causes poor appearance of polypropylene blow molded products. As a result,
It has been found that it is effective to use mica pearl pigment in combination with acid-modified polypropylene as a colorant composition.
即ち、酸変性ポリプロピレンを配合したマイカ製パール
顔料を含む着色剤組成物をポリプロピレン樹脂に混合し
、通常のブロー成形機を使用してボトル等のパール外観
の成形品を成形した場合、マイカ製パール顔料がブロー
成形機のプレーカープレートやダイス、コア壁等に運転
時間が経過しても全く凝集、固着することがなく、従っ
て、外観にスジ、色むら、部分的凝集などの外観不良の
発生がない優れたパール外観のブロー成形品が安定して
底形され、このため外観不良発生に伴う成形不良の発生
がほとんどなくなると共に、ブロー成形機の稼動を停止
してマイカ製パール顔料の除去や部品交換などをする必
要がなくなるなど、経済的効果が極めて大であることを
見い出し、本発明をなすに至ったものである。That is, when a colorant composition containing a mica pearl pigment blended with acid-modified polypropylene is mixed with polypropylene resin and molded into a molded product with a pearl appearance such as a bottle using an ordinary blow molding machine, mica pearls Pigments do not aggregate or stick to the blow molding machine's blow molding machine's blow molding machine plate, die, core wall, etc. even after operating hours, resulting in appearance defects such as streaks, color unevenness, and partial aggregation. The bottom of the blow-molded product with an excellent pearl appearance is stably formed, and as a result, molding defects due to appearance defects are almost eliminated, and the operation of the blow molding machine is stopped to remove mica pearl pigments The inventors have discovered that the present invention has extremely large economical effects, such as eliminating the need to replace parts.
従って、本発明はポリプロピレン製プロー成形品をマイ
カ製パール顔料で着色するための着色剤組成物において
、マイカ製パール顔料に酸変性ポリプロピレンを併用し
たことを特徴とする着色剤組成物、及び該着色剤Ｕ酸物
でパール着色されたポリプロピレンプロー成形品を提供
する。Therefore, the present invention provides a colorant composition for coloring a polypropylene blow molded article with a mica pearl pigment, which is characterized in that the mica pearl pigment is used in combination with an acid-modified polypropylene, and the coloring composition is characterized in that the mica pearl pigment is used in combination with an acid-modified polypropylene. To provide a polypropylene blow molded product that is pearl-colored with an agent U acid.
以下、本発明について更に詳しく説明する。The present invention will be explained in more detail below.
本発明の着色剤Ｍｉ戒酸物、マイカ製パール顔料と酸変
性ポリプロピレンを含有してなるものである。The coloring agent of the present invention contains a Mi acid salt, a mica pearl pigment, and an acid-modified polypropylene.
ここで、酸変性ポリプロピレンは、ポリプロピレン樹脂
にカルボキシル基等の官能基をグラフト重合させ付与さ
せたもので、官能基としては下記のものが挙げられ、こ
れらの官能基の２種以上の共重合体でもよい。Here, acid-modified polypropylene is obtained by graft polymerizing a functional group such as a carboxyl group to a polypropylene resin, and examples of the functional group include the following, and a copolymer of two or more of these functional groups. But that's fine.
（Ｒはメチル基、エチル基等の低級アルキル基を示す、
）
υ
υ
また、酸変性ポリプロピレンの密度は０．８９〜０．９
１ｇ／ｃｃ、マスフローレート（ＭＦＲ）は０．１〜１
０ ｇ／ １０ｍ１ｎ、特に１〜５ｇ／ｌ（１＋＋ｉｎ
のものが好ましい。(R represents a lower alkyl group such as a methyl group or an ethyl group,
) υ υ Also, the density of acid-modified polypropylene is 0.89 to 0.9
1g/cc, mass flow rate (MFR) is 0.1-1
0 g/10 m1n, especially 1-5 g/l (1++ in
Preferably.
また、マイカ製パール顔料は積層構造を有する微細な雲
母であり、−船釣に顔料として使用されているいずれの
ものも使用でき、所望の外観を考慮して選定することが
できるが、例えば平均粒径が５〜２００μ程度のものが
好適であり、パール感を更に発現させるため、雲母をチ
タン処理したパール顔料も好適に用いられ、更に処理剤
としてチタンカップリング剤、シランカップリング剤等
を使用してもよい。In addition, mica pearl pigments are fine mica with a layered structure, and any of the pigments used as pigments for boat fishing can be used, and can be selected taking into consideration the desired appearance. Particles with a particle size of about 5 to 200 μm are preferable, and in order to further develop a pearlescent feel, pearl pigments in which mica is treated with titanium are also preferably used, and a titanium coupling agent, a silane coupling agent, etc. are further used as a treatment agent. May be used.
本発明の着色剤組成物は上記酸変性ポリプロピレン及び
マイカ製パール顔料に加えて通常のポリプロピレンを配
合することができる。The colorant composition of the present invention may contain ordinary polypropylene in addition to the above acid-modified polypropylene and mica pearl pigment.
このポリプロピレンとしては、ブロー底形用として使用
されているものが好適で、例えば密度が０．８９〜０．
９１ ｇ／ｃｃ、 ＭＦＲが０．１５〜２．５ｇ／１０
ｍ１ｎのものを好適に使用することができる。As this polypropylene, one used for blow bottom type is suitable, and for example, the density is 0.89 to 0.
91 g/cc, MFR 0.15-2.5g/10
m1n can be suitably used.
本発明の着色剤組成物は、これら酸変性ポリプロピレン
、マイカ製パール顔料及び必要に応じてポリプロピレン
を含有するものであるが、これらの含有割合は酸変性ポ
リプロピレンを１〜９９．７％（重量％、以下同じ）、
好ましくは１０〜４０％、マイカ製パール顔料を０．３
〜５０％、好ましくは０．３〜１０％、ポリプロピレン
を０〜９８．７％、好ましくは５０〜９０％とすること
が好適である。マイカ製パール顔料の含有量が０．３％
未満では本発明の目的とするパール外観の成形品が得ら
れず、一方、５０％より多く含有するものはマイカ製パ
ール顔料の分散性が悪くなり、上述した成形品の外観不
良が生じる場合がある。また、酸変性ポリプロピレンの
含有量が１％未満ではマイカ製パール顔料の分散性が悪
くなり、やはり上述した成形品の外観不良が生しる場合
がある。The colorant composition of the present invention contains these acid-modified polypropylene, mica pearl pigment, and polypropylene as necessary. ,same as below),
Preferably 10-40%, mica pearl pigment 0.3%
-50%, preferably 0.3-10%, and polypropylene 0-98.7%, preferably 50-90%. Mica pearl pigment content is 0.3%
If the content is less than 50%, it will not be possible to obtain a molded product with a pearl appearance, which is the objective of the present invention.On the other hand, if the content is more than 50%, the dispersibility of the mica pearl pigment will be poor, and the above-mentioned poor appearance of the molded product may occur. be. Furthermore, if the content of acid-modified polypropylene is less than 1%, the dispersibility of the mica pearl pigment will be poor, and the above-mentioned poor appearance of the molded product may also occur.
本発明の着色剤組成物においては、上記成分以外に得よ
うとする成形品の外観の趣向性などに応じて他の顔料、
酸化防止剤、帯電防止剤などを適宜配合しても何ら差し
支えない。In addition to the above-mentioned components, the colorant composition of the present invention may contain other pigments depending on the desired appearance of the molded product.
There is no problem in adding antioxidants, antistatic agents, etc. as appropriate.
本発明の着色剤組成物は上述した成分を常法に従い混合
、加熱、溶融、混練して得ることができ、通常ペレット
化して用いることができる。The colorant composition of the present invention can be obtained by mixing, heating, melting, and kneading the above-mentioned components according to a conventional method, and can usually be used in the form of pellets.
また、この着色剤組成物を使用してパール外観を有する
ポリプロピレン製ブロー成形品を製造する方法は通常の
ブロー成形機を使用して通常の着色剤を用いる場合と同
様の方法で行なうことができる。In addition, the method for producing a polypropylene blow-molded product having a pearl appearance using this colorant composition can be carried out using a normal blow molding machine in the same manner as when using a normal colorant. .
かくして得られたポリプロピレン製ブロー成形品は縦ス
ジや色むら、パール顔料の凝集のない平滑で優れたパー
ル外観を有するもので商品価値の高いものである。The polypropylene blow-molded product thus obtained has a smooth and excellent pearl appearance without vertical streaks, color unevenness, or agglomeration of pearl pigments, and has high commercial value.
以上説明したように、本発明の着色剤組成物によれば、
ブロー成形機に改良を加えずにそのまま使用して外観不
良のない優れた品質のパール状外観を有するポリプロピ
レン製ブロー成形品を安定して成形できるもので、成形
効率も顕著に向上し、経済的効果が極めて大である。As explained above, according to the colorant composition of the present invention,
The blow molding machine can be used as is without any modification to stably mold polypropylene blow molded products with an excellent pearl-like appearance and no appearance defects.The molding efficiency has also been significantly improved, making it economical. The effect is extremely large.
以下、実施例と比較例を挙げて本発明を更に具体的に説
明するが、本発明は下記実施例に制限されるものではな
い。EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to the Examples below.
無水マレイン酸系の酸変性ポリプロピレンＡ（ＭＦＲ２
，０ｇ／１（ｌａｉｎ 、密度０．８９ｇ／ｃｃ）及び
アクリル酸系の酸変性ポリプロピレンＢ （ＭＦＲ３，
０ｇ／１０ｍ１ｎ 、密度０．９１ ｇ／ｃｃ）を使用
し、下記方法に従い、第１表に示す組成のマイカ製パー
ル顔料を含有する７種類の着色マスターバッチを作威し
、これらのマスターバッチを使用して下記方法によりポ
リプロピレン製のボトルを押出しブロー成形した。Maleic anhydride acid-modified polypropylene A (MFR2
, 0g/1 (lain, density 0.89g/cc) and acrylic acid-based acid-modified polypropylene B (MFR3,
0 g/10 m1n, density 0.91 g/cc), seven types of colored masterbatches containing mica pearl pigments with the compositions shown in Table 1 were prepared according to the following method, and these masterbatches were A polypropylene bottle was extruded and blow molded using the following method.
次いで、得られたボトルの外観を観察し、スジ、色むら
の有無を調べた。その結果を第１表に併記する。Next, the appearance of the obtained bottle was observed, and the presence or absence of streaks and color unevenness was examined. The results are also listed in Table 1.
着色マスターバンチ作 法
第１表に示す組成のものをバンバリーミキサ−に投入し
、約１８０〜２００℃にて加熱、溶融、混練し、ポリプ
ロピレン、酸変性ポリプロピレン中にマイカ製パール顔
料を分散させる。その後ミキシングロールにてベルト状
に引出し、角ペレタイザーにて角ペレットにした。更に
、着色マスターバッチの形状を整えるために、押出機に
て約１８０〜２００℃で溶融押出し、丸ペレットに造粒
した。Colored Master Bunch Preparation A product having the composition shown in Table 1 is placed in a Banbury mixer, heated at about 180 to 200°C, melted, and kneaded to disperse mica pearl pigment in polypropylene or acid-modified polypropylene. Thereafter, it was drawn out into a belt using a mixing roll and made into square pellets using a square pelletizer. Furthermore, in order to adjust the shape of the colored masterbatch, it was melt-extruded using an extruder at about 180 to 200°C and granulated into round pellets.
押出しブロー 形 法
上で作成した着色マスターバッチ１０重量部をポリプロ
ピレン（三井石油化学製、Ｂ−２７８）２００重量部に
混合し、Ｌ／Ｄ ： ２０．ダイ／コア：９．３Ｘ９．
７／４φの成形機のホッパーに投入し、シリンダー、ダ
イの設定温度を１８０〜２００℃として上記混合物を加
熱、溶融、混練して、押出しブロー成形した。Extrusion blow type: 10 parts by weight of a colored masterbatch prepared by the method was mixed with 200 parts by weight of polypropylene (Mitsui Petrochemical, B-278), L/D: 20. Die/core: 9.3X9.
The mixture was put into a hopper of a 7/4φ molding machine, and the temperature of the cylinder and die was set at 180 to 200°C, and the mixture was heated, melted, kneaded, and extruded and blow molded.
第１表の結果より、酸変性ポリプロピレンを配合せず、
マイカ製パール顔料を単にポリプロピレン中に分散させ
た比較例の着色マスターバンチを使用した成形品はスジ
、色むらがあり、商品価値のないものである。これに対
し、酸変性ポリプロピレンを配合した本発明品のマスタ
ーバッチを使用した成形品は、スジ及び色むらがなく、
優れた外観を有していた。From the results in Table 1, without adding acid-modified polypropylene,
A molded product using a colored master bunch of a comparative example in which a mica pearl pigment was simply dispersed in polypropylene had streaks and color unevenness, and had no commercial value. On the other hand, molded products using the masterbatch of the present invention containing acid-modified polypropylene have no streaks or uneven color.
It had an excellent appearance.
なお、参考写真ｌ〜３に成形品の断面顕微鏡写真を示す
。ここで、参考写真１．２は、酸変性ポリプロピレンを
配合しない比較例に係る成形品に生したスジ部の状態を
示すもので、参考写真１は倍率４０倍、参考写真２は倍
率４００倍である。In addition, reference photographs 1 to 3 show cross-sectional micrographs of the molded product. Here, reference photo 1.2 shows the condition of streaks that appeared on a molded product according to a comparative example in which acid-modified polypropylene was not blended. Reference photo 1 is at a magnification of 40x, and reference photo 2 is at a magnification of 400x. be.
また、参考写真３は、酸変性ポリプロピレンを配合した
実施例に係る成形品の倍率４００倍の断面顕微鏡写真で
、酸変性ポリプロピレンを用いることにより、スジの生
成を防止し得ることがわかる。Reference photo 3 is a cross-sectional micrograph at a magnification of 400 times of a molded product according to an example in which acid-modified polypropylene was blended, and it can be seen that the use of acid-modified polypropylene can prevent the formation of streaks.
また、ブロー成形の前に予め着色マスターバッチとポリ
プロピレンを混合、混練、押出して着色ペレットを作り
、それをブロー成形しても、酸変性ポリプロピレンを含
まない組成の製品はスジ、色ムラが発生し、酸変性ポリ
プロピレンを含む組成の製品はスジ、色ムラの発生はな
いものであった。In addition, even if a colored masterbatch and polypropylene are mixed, kneaded, and extruded to make colored pellets before blow molding, and the pellets are then blow molded, products with compositions that do not contain acid-modified polypropylene will have streaks and color unevenness. The products containing acid-modified polypropylene were free from streaks and color unevenness.
第１図はブロー成形機の押出機の概略図、第２図はダイ
ノズルから押出されるパリソンの状態を示す概略図であ
る。
１・・・ブロー成形用押出機、２・・・ホフバー、３・
・・スクリュー、４・・・ダイ、５・・・ダイノズル、
６・・・パリソン、７・・・ダイ内表面壁、８・・・コ
ア、９・・・コア外表面壁、１０・・・マイカ製パール
顔料、１１・・・プレーカープレートFIG. 1 is a schematic diagram of an extruder of a blow molding machine, and FIG. 2 is a schematic diagram showing the state of a parison extruded from a die nozzle. 1... Extruder for blow molding, 2... Hofbar, 3...
...Screw, 4...Die, 5...Die nozzle,
6... Parison, 7... Die inner surface wall, 8... Core, 9... Core outer surface wall, 10... Mica pearl pigment, 11... Preker plate
Claims (1)
料で着色するための着色剤組成物において、マイカ製パ
ール顔料に酸変性ポリプロピレンを併用したことを特徴
とする着色剤組成物。 ２、請求項１記載の着色剤組成物でパール着色されたポ
リプロピレン製ブロー成形品。[Scope of Claims] 1. A colorant composition for coloring a polypropylene blow-molded article with a mica pearl pigment, characterized in that the mica pearl pigment is used in combination with acid-modified polypropylene. 2. A polypropylene blow-molded article pearl-colored with the colorant composition according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4370990A JP2874249B2 (en) | 1990-02-22 | 1990-02-22 | Colorant composition and blow-molded article colored with the composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4370990A JP2874249B2 (en) | 1990-02-22 | 1990-02-22 | Colorant composition and blow-molded article colored with the composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03244671A true JPH03244671A (en) | 1991-10-31 |
| JP2874249B2 JP2874249B2 (en) | 1999-03-24 |
Family
ID=12671340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4370990A Expired - Lifetime JP2874249B2 (en) | 1990-02-22 | 1990-02-22 | Colorant composition and blow-molded article colored with the composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2874249B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0687983A (en) * | 1992-09-08 | 1994-03-29 | Dainichiseika Color & Chem Mfg Co Ltd | Colored polyethylene resin composition |
| JPH0770377A (en) * | 1993-06-28 | 1995-03-14 | Hightech Kemi Kk | Coloring polyolefin resin composition |
-
1990
- 1990-02-22 JP JP4370990A patent/JP2874249B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0687983A (en) * | 1992-09-08 | 1994-03-29 | Dainichiseika Color & Chem Mfg Co Ltd | Colored polyethylene resin composition |
| JPH0770377A (en) * | 1993-06-28 | 1995-03-14 | Hightech Kemi Kk | Coloring polyolefin resin composition |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2874249B2 (en) | 1999-03-24 |
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