JP2000226479A5 - - Google Patents
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- JP2000226479A5 JP2000226479A5 JP1999029943A JP2994399A JP2000226479A5 JP 2000226479 A5 JP2000226479 A5 JP 2000226479A5 JP 1999029943 A JP1999029943 A JP 1999029943A JP 2994399 A JP2994399 A JP 2994399A JP 2000226479 A5 JP2000226479 A5 JP 2000226479A5
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- polypropylene
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- -1 polypropylene Polymers 0.000 description 28
- 239000004743 Polypropylene Substances 0.000 description 24
- 229920001155 polypropylene Polymers 0.000 description 24
- 239000000049 pigment Substances 0.000 description 22
- 239000011347 resin Substances 0.000 description 22
- 239000011342 resin composition Substances 0.000 description 21
- 229920005989 resin Polymers 0.000 description 20
- 238000001746 injection moulding Methods 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- 239000000454 talc Substances 0.000 description 12
- 229910052623 talc Inorganic materials 0.000 description 12
- 229910052814 silicon oxide Inorganic materials 0.000 description 11
- 150000001875 compounds Chemical class 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 239000003086 colorant Substances 0.000 description 9
- 239000010419 fine particle Substances 0.000 description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L Barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 6
- 150000001336 alkenes Chemical class 0.000 description 6
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- 238000004040 coloring Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- 239000004698 Polyethylene (PE) Substances 0.000 description 5
- 239000011256 inorganic filler Substances 0.000 description 5
- 229910003475 inorganic filler Inorganic materials 0.000 description 5
- 238000004898 kneading Methods 0.000 description 5
- 230000000704 physical effect Effects 0.000 description 5
- 239000004594 Masterbatch (MB) Substances 0.000 description 4
- 239000004615 ingredient Substances 0.000 description 4
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Chemical compound [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 description 4
- 229960003563 Calcium Carbonate Drugs 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 229910052570 clay Inorganic materials 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000002270 dispersing agent Substances 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000010445 mica Substances 0.000 description 3
- 229910052618 mica group Inorganic materials 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N TiO Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 238000011068 load Methods 0.000 description 2
- 235000019359 magnesium stearate Nutrition 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920005673 polypropylene based resin Polymers 0.000 description 2
- 229920005629 polypropylene homopolymer Polymers 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 229910001929 titanium oxide Inorganic materials 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-Octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 1
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 1
- PPWUTZVGSFPZOC-UHFFFAOYSA-N 1-methyl-2,3,3a,4-tetrahydro-1H-indene Chemical compound C1C=CC=C2C(C)CCC21 PPWUTZVGSFPZOC-UHFFFAOYSA-N 0.000 description 1
- 241000566113 Branta sandvicensis Species 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- HECLRDQVFMWTQS-UHFFFAOYSA-N Dicyclopentadiene Chemical compound C1C2C3CC=CC3C1C=C2 HECLRDQVFMWTQS-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N Heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- JLUFWMXJHAVVNN-UHFFFAOYSA-N Methyltrichlorosilane Chemical compound C[Si](Cl)(Cl)Cl JLUFWMXJHAVVNN-UHFFFAOYSA-N 0.000 description 1
- 229940105132 Myristate Drugs 0.000 description 1
- 239000011954 Ziegler–Natta catalyst Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007707 calorimetry Methods 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- HQQADJVZYDDRJT-UHFFFAOYSA-N ethene;prop-1-ene Chemical group C=C.CC=C HQQADJVZYDDRJT-UHFFFAOYSA-N 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- PRBHEGAFLDMLAL-UHFFFAOYSA-N hexa-1,4-diene Chemical compound CC=CCC=C PRBHEGAFLDMLAL-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 229910000460 iron oxide Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 229920004889 linear high-density polyethylene Polymers 0.000 description 1
- 229920000092 linear low density polyethylene Polymers 0.000 description 1
- 239000004707 linear low-density polyethylene Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229920001684 low density polyethylene Polymers 0.000 description 1
- 239000004702 low-density polyethylene Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TUNFSRHWOTWDNC-UHFFFAOYSA-M myristate Chemical compound CCCCCCCCCCCCCC([O-])=O TUNFSRHWOTWDNC-UHFFFAOYSA-M 0.000 description 1
- IPCSVZSSVZVIGE-UHFFFAOYSA-M palmitate Chemical compound CCCCCCCCCCCCCCCC([O-])=O IPCSVZSSVZVIGE-UHFFFAOYSA-M 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920001384 propylene homopolymer Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-M stearate Chemical compound CCCCCCCCCCCCCCCCCC([O-])=O QIQXTHQIDYTFRH-UHFFFAOYSA-M 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 230000002194 synthesizing Effects 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 238000001665 trituration Methods 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Description
【特許請求の範囲】
【請求項1】 タルク、炭酸カルシウム、クレー、マイカ、硫酸バリウム及びガラス繊維からなる群から選ばれる1種以上の無機充填材、顔料及びポリプロピレン系樹脂を含有する樹脂組成物100重量部に対して、粒径50nm以下の微粒子酸化珪素を0.01〜3重量部配合したことを特徴とする射出成形用着色樹脂組成物。
【請求項2】 前記ポリプロピレン系樹脂がプロピレン単独重合体又はエチレン−プロピレン共重合体である請求項1記載の射出成形用着色樹脂組成物。
[Claims]
(1) At least one selected from the group consisting of talc, calcium carbonate, clay, mica, barium sulfate and glass fiberInorganic filler,faceFeeAnd polypropylene resinContainsTreeFor 100 parts by weight of the fat composition,grainA colored resin composition for injection molding, comprising 0.01 to 3 parts by weight of fine particle silicon oxide having a diameter of 50 nm or less.
2. The polypropyleneResinIs propylene homopolymerorIs an ethylene-propylene copolymer.For injection moldingColored resin composition.
【0001】
【産業上の利用分野】
本発明は、ポリプロピレン系樹脂を主成分とする樹脂組成物を、射出成形で加工した際、成形品に生じる筋状の色むらを解消させる着色樹脂組成物に関するものである。また、本発明の着色樹脂組成物は、ポリプロピレン系樹脂組成物からなる成形加工品全般に使用できる。
[0001]
[Industrial applications]
The present invention relates to a colored resin composition that eliminates streaky color unevenness that occurs in a molded product when a resin composition containing a polypropylene resin as a main component is processed by injection molding. Moreover, the colored resin composition of the present invention can be used in molded articles in general made of a polypropylene resin composition.
本発明は、上記の問題点を解消し、無機充填材及び顔料を含有するポリプロピレン系樹脂組成物を射出成形で加工した際、成形品に生じる筋状の色むらの発生を防止する方法を提供することを目的とする。 The present invention solves the above problems and provides a method for preventing the occurrence of streak-like color unevenness in a molded product when a polypropylene-based resin composition containing an inorganic filler and a pigment is processed by injection molding. The purpose is to do.
即ち本発明は、タルク、炭酸カルシウム、クレー、マイカ、硫酸バリウム及びガラス繊維からなる群から選ばれる1種以上の無機充填材、顔料及びポリプロピレン系樹脂を含有する樹脂組成物100重量部に対して、粒径50nm以下の微粒子酸化珪素を0.01〜3重量部配合したことを特徴とする射出成形用着色樹脂組成物を提供するものである。 That is, the present invention include talc, calcium carbonate, clay, mica, one or more inorganic fillers selected from the group consisting of barium sulfate and fiberglass, Pigments and tree fat composition 100 parts by you containing polypropylene resin respect, there is provided an injection molding colored resin composition, characterized in that blended 0.01 to 3 parts by weight or less of the fine silicon oxide particle size 50nm.
本発明は要するに、無機充填材、顔料及びポリプロピレン系樹脂を含有する樹脂組成物を用いて成形した成形品表面に筋状の色むらが生じる場合、その組成物に更なる配合成分として粒径50nm以下の微粒子酸化珪素を一定配合比率で配合することによって、これを色むら防止剤として作用させ、この色むらを効果的に防止することを開示するものである。 The present invention is short, if no machine filler, the molded surface of a molded article using the resin composition containing a pigment and polypropylene resin color unevenness streaky occurs, the particle size as a further ingredients to the composition by blending the following particulate silicon oxide 50nm at a constant mixing ratio, which was to act as a color unevenness inhibitor, it is to disclose that you avoid this color unevenness effectively.
本発明で使用するポリプロピレン系樹脂としては、プロピレン単独重合体、エチレン−プロピレン共重合体又はプロピレン−αオレフィン共重合体であり、溶融流動性(MFR、230℃−2.16Kg荷重)が着色対象のポリプロピレン系樹脂組成物より高流動である事が望ましい。その重合形式は液相、気相を問わずチーグラーナッタ系触媒やシングルサイト触媒で合成される物で、合成段階で立体規則性はアイソタクチック、シンジオタクチック何れをも問わず、共重合体はランダム、ブロック何れをも問わない。又このようなポリプロピレンには通常のオレフィン系ゴム、即ち、エチレンにプロピレン或いはブテン−1或いはオクテンを二元共重合させた物とか、これらにジシクロペンタジエン、メチルテトラヒドロインデン、メチレンノルボルネン、エチリデンノルボルネン、1,4−ヘキサジエン等の非共役ジエンのいずれかを第3成分として加え共重合させた三元共重合体などを構成成分の一つに含んでも良い。同様にプロピレン−ブテン−1共重合体も含んでも良い。 As the polypropylene resin used in the present invention, propylene homopolymer polymer, ethylene - a flop propylene copolymer or propylene -α-olefin copolymer, melt fluidity (MFR, 230 ℃ -2.16Kg load) coloring Desirably, the fluidity is higher than that of the target polypropylene resin composition. The polymerization type is a product synthesized with a Ziegler-Natta catalyst or single-site catalyst regardless of the liquid phase or gas phase, and the stereoregularity at the synthesis stage is irrespective of whether it is isotactic or syndiotactic. May be random or block. The conventional olefin based rubber such a polypropylene, i.e., Toka ones ethylene propylene or butene-1 or octene were binary copolymerization, these dicyclopentadiene, methyl tetrahydroindene, Mechiren'norubo Le Nen, Echiriden'norubo Le One of the constituent components may include a terpolymer obtained by adding any of non-conjugated dienes such as nene and 1,4 - hexadiene as a third component and copolymerizing the same. Similarly, a propylene-butene-1 copolymer may be included.
無機充填材は通常、ポリプロピレン系樹脂の物性強化や寸法安定性を高めるために、タルク、炭酸カルシウム、クレー、マイカ、硫酸バリウム又はガラス繊維が用いられるが、主として用いられるタルクはタルク原石を衝撃式粉砕機等で粉砕し、更にジェットミル等で微粉砕して得られる粒子径数μm以下の物であり、ポリプロピレン系樹脂組成物中では0重量%を超え、40重量%以下の比率で含有される。 Inorganic filler typically in order to improve the physical properties enhanced and dimensional stability of the polypropylene resin, talc, calcium carbonate, clay, mica, impact but barium sulfate or glass textiles are used, mainly talc used is talc ore Trituration with formula pulverizer, more than ones particle diameter of several mu m obtained by finely pulverized with a jet mill or the like, more than 0 wt% in the polypropylene resin composition, a ratio of 40 wt% or less Contained.
本発明の射出成形用着色樹脂組成物は、一般的に言われる着色コンパウンドの形態を取るのが好ましい。また、マスターバッチカラーとして呼称される粒状着色剤として、顔料と微粒子酸化珪素を、着色コンパウンドで用いられる濃度に還元できるように濃縮して配合し、顔料分散剤と担体樹脂であるオレフィン系樹脂を加えて、混合混練して作られる物と、無機充填材を含有するポリプロピレン系樹脂組成物粒子を混合した物でも良い。 The colored resin composition for injection molding of the present invention preferably takes the form of a generally-known colored compound. Further, as a granular colorant called a master batch color, a pigment and fine particle silicon oxide are concentrated and blended so as to be reduced to a concentration used in a coloring compound, and a pigment dispersant and an olefin resin as a carrier resin are mixed. in addition, a material made by mixing and kneading, may be a mixture of polypropylene resin composition particles containing a non-machine filler.
前記粒状着色剤を作る場合、用いる顔料分散剤は脂肪酸金属塩、低分子量ポリオレフィン、脂肪酸エステル、脂肪酸アマイド等の通常の物で良く、担体樹脂はホモポリプロピレン、ブロック共重合ポリプロピレン、ランダム共重合ポリプロピレン等を主体とし、必要に応じて更に低密度ポリエチレン、直鎖状低密度ポリエチレン、高密度ポリエチレン等のオレフィン系樹脂単独或いはこれらを組み合わせて併用しても良い。尚、プロピレン系以外のこれらのオレフィン系樹脂はそれを主体とすることもできるが、ポリプロピレン系樹脂を主体とするのが極めて効果的である。 When preparing the granular colorant, the pigment dispersant to be used may be a usual product such as a fatty acid metal salt, a low molecular weight polyolefin, a fatty acid ester, a fatty acid amide, and the carrier resin is a homopolypropylene, a block copolymerized polypropylene, a random copolymerized polypropylene, or the like. If necessary, olefin resins such as low-density polyethylene, linear low-density polyethylene, and high-density polyethylene may be used alone or in combination. In addition, these olefin resins other than the propylene resin can be mainly used, but it is extremely effective to mainly use the polypropylene resin.
本発明の射出成形用着色樹脂組成物の必須成分の構成比は、着色コンパウンドでは顔料が0.01〜10重量%で、顔料を除いた残りが微粒子酸化珪素と無機充填材(例えばタルク)とポリプロピレン主体のオレフィン系樹脂である。粒状着色剤にあっては、顔料は1〜80重量%で、微粒子酸化珪素を含み、無機充填材を含む必要はない。その着色対象となるポリプロピレン主体のオレフィン系樹脂が、微粉状無機充填材を含むものであれば良いからである。 Composition ratio of essential components of the injection molding colored resin composition of the present invention, 0.01 to 10 wt% pigment in the colored compound, after deducting pigment particles of silicon oxide and non-machine filler (such as talc) And an olefin resin mainly composed of polypropylene. In the granular colorant, pigment is 1 to 80% by weight, comprises particles of silicon oxide, need not include a non-machine filler. The reason is that the olefin-based resin mainly composed of polypropylene to be colored may contain a finely powdered inorganic filler.
微粒子酸化珪素の使用量は、着色コンパウンドの場合、着色コンパウンド中の顔料100重量部に対し1〜200重量部であり、着色コンパウンド100重量部に対しては、0.01〜3重量部である。また、本発明の射出成形用着色樹脂組成物が粒状着色剤を一成分とする場合又はそれを経由して作られる場合には、その粒状着色剤においては、着色対象のポリプロピレン系樹脂への粒状着色剤の配合率を考慮して、上記着色コンパウンドを得る際に決めた微粒子酸化珪素量の濃縮を図れば良い。 The amount of the fine particles of silicon oxide in the case of colored compound is 1 to 200 parts by weight per 100 parts by weight of the pigment in the colored compound, for the coloring compound 100 parts by weight, is from 0.01 to 3 parts by weight . Further , when the colored resin composition for injection molding of the present invention comprises a granular colorant as a component or is produced via the same, in the granular colorant, the granular colorant for the polypropylene resin to be colored is In consideration of the mixing ratio of the coloring agent, the concentration of the fine particle silicon oxide determined at the time of obtaining the coloring compound may be concentrated.
本発明の射出成形用着色樹脂組成物における微粒子酸化珪素の効果は次のように考察される。まず、ポリプロピレン系樹脂組成物が加熱溶融可塑化された成形段階において、顔料と無機充填材(以下タルク等と略称する)、或いはポリプロピレン系樹脂とタルク等、或いはポリプロピレン系樹脂と顔料が分離するのを抑制する働きがあると推測する。本発明における微粒子酸化珪素は、加える量は少量でありながら、粒子個数そのものは多い。本来、液状物のゲル化剤としての働きがあり、溶融した樹脂でもその効果が発揮される。従ってタルク等の凝集を抑制する働きがあり、顔料やタルクの偏在や欠乏状態である筋状の色むらを成形加工中に現出させないと見られる。 The effect of the fine particle silicon oxide in the colored resin composition for injection molding of the present invention is considered as follows. First, in the molding step of the polypropylene resin composition is heated and melted plasticized, (hereinafter abbreviated as talc) pigment and no machine filler, or polypropylene resin and talc, or polypropylene-based resin and a pigment are separated It is supposed that it has the function of suppressing The fine particle silicon oxide in the present invention has a small number of particles, but a large number of particles. Originally, it has a function as a gelling agent for a liquid material, and the effect is exhibited even with a molten resin. Therefore, it has a function of suppressing aggregation of talc and the like, and it is considered that streaky color unevenness which is a state of uneven distribution or lack of pigment or talc does not appear during molding.
本発明の射出成形用着色樹脂組成物は、必須成分と所望によりその他成分とを混合し、溶融混練して得られる。例えば顔料を予め顔料分散剤と高速ミキサー等で混合し、バンバリ−ミキサーやニーダーで混練した後、加熱2本ロールや加熱3本ロールにて顔料を微細に磨砕処理した上で、単軸スクリューや2軸スクリュー押出機等の混練機で担体樹脂とその他成分と共に混練して得る方法、これら成分全てを一度に混合し、バンバリーミキサー、ニーダー、高速回転インテンシブミキサー、2軸スクリュー押出機等で溶融混練して得る方法が挙げられる。混練物の形状は混練機からの取り出し方により、ホットカットで粒状物にしたり、シート或いはストランドをコールドカットした粒状物にしたりすることができる。 Injection molding the colored resin composition of the present invention, by mixing the other ingredients optionally with 必 Sunari fraction, obtained by melt-kneading. For example, a pigment is previously mixed with a pigment dispersant by a high-speed mixer and the like, kneaded by a Banbury mixer or a kneader, and then finely ground by a heated two roll or three heated roll, and then subjected to a single screw. and how obtained by kneading with a carrier resin and other ingredients with a kneading machine such as a twin-screw extruder, mixing all the components at one time, a Banbury mixer, a kneader, a high speed rotation intensive mixer, in a twin screw extruder melt-kneading to give that methods. The shape of the kneaded product by way removal from the kneader, Ri and granulated product in hot cut, it is possible to benefit the sheet or strand into granules and cold cuts.
本発明の射出成形用着色樹脂組成物を前記粒状着色剤を用いて調製する場合、の被着色樹脂は、顔料未配合の無機充填材含有のポリプロピレン系樹脂組成物であり、所望の顔料濃度となるように、被着色樹脂100重量部に対し粒状着色剤が通常10重量部以下で配合される。 When preparing an injection molding colored resin composition of the present invention by using the granular colorant, the colored resin is a polypropylene resin composition containing no machine filler pigments unformulated, desired pigment concentration The particulate colorant is usually added in an amount of 10 parts by weight or less based on 100 parts by weight of the resin to be colored.
実施例1、2と比較例1
表1記載のカーボンブラック(C.I.P.B.7)、チタンイエロー(Sb-Ni-Tioxide、C.I.P.Y.53)及び酸化チタン(ルチル型C.I.P.W.6)顔料と低分子量ポリエチレンワックス(PEワックス)を、それぞれ表1記載の配合比(部)にて高速ミキサーで混合し、粉状物とした。次にこの粉状物を加圧ニーダーにて加熱溶融混練し、取り出して3本ロールにて微細に磨砕処理して塊状物にし、クラッシャー粉砕で顔料分散の良い不定形粒状物にした。この粒状物に、表1記載のタルク練り込みポリプロピレンと微粒子状酸化珪素−Aを、それぞれ表1記載の配合比でタンブラーで混合した。次にこの混合物を2軸スクリュー押出機(L/D=30)にて溶融混練し、ストランド状に押し出した後、回転刃切断型ペレタイザ−にて長さ2〜3mmの円筒形グレー色コンパウンド100部に加工した。得られた着色コンパウンドは100℃で2時間乾燥させた後、射出成形にて筋発生試験(A法)と物性試験に供した。結果は表2に記載したが、本発明組成の着色コンパウンドは筋がなく、外観は良好で諸物性の保持も良好であった。
Examples 1 and 2 and Comparative Example 1
The carbon black (CIPB7), titanium yellow (Sb-Ni-Tioxide, CIPY53) and titanium oxide (rutile type CIPW6) pigments shown in Table 1 and the low molecular weight polyethylene wax (PE wax) were mixed in the mixing ratio (parts ) shown in Table 1, respectively. ) Was mixed with a high-speed mixer to obtain a powder. Next, the powdery material was heated and melted and kneaded with a pressure kneader, taken out and finely ground by a three-roll mill to form a lump, and crusher-pulverized to give an irregularly-shaped pigment with good pigment dispersion. To the granules, talc-kneaded polypropylene and fine-particle silicon oxide- A shown in Table 1 were mixed in a tumbler at the mixing ratio shown in Table 1, respectively. Next, this mixture was melt-kneaded with a twin screw extruder (L / D = 30), extruded into strands, and then, using a rotary blade cutting type pelletizer, a cylindrical gray compound 100 having a length of 2 to 3 mm. Processed into parts. After drying the obtained coloring compound at 100 ° C. for 2 hours, it was subjected to a streak development test (Method A) and a physical property test by injection molding. The results are shown in Table 2. The coloring compound of the present invention had no streaks, had a good appearance and good physical properties.
実施例3、4と比較例2
表3記載の酸化チタン(C.I.P.W.7)、酸化鉄(C.I.P.R.101)、カーボンブラック(C.I.P.B.6)及び銅フタロシアニンブルー(β型C.I.P.B.15:3)顔料とステアリン酸マグネシウム及び低分子量ポリエチレンワックス(PEワックス)を、それぞれ表3記載の配合比(部)にて高速ミキサーで混合し、粉状物とした。次に、この混合物を加圧ニーダーにて加熱溶融混練し、続いて3本ロールにて微細に磨砕処理した。得られた混練物は更にクラッシャーで粉砕することによって顔料分散の良い不定形粒状物にした。この不定形粒状物は表3記載の配合比で、微粒子状酸化珪素−Bとアイソタクチックポリプロピレンと混合し、2軸スクリュー押出機(L/D=30)で溶融混練し、ストランド状に押出した後、回転刃切断型ペレタイザ−にて長さ2〜3mmの円筒形状黒色マスターバッチカラー100部に加工した。得られたマスターバッチカラーは、タルク練り込みポリプロピレン97部に対し3部添加し、射出成形筋発生試験(B法)と物性試験に供した。結果は表4に記載したが、このマスターバッチカラーを用いた着色樹脂組成物は筋発生もなく、諸物性の保持も良好であった。
Examples 3 and 4 and Comparative Example 2
The titanium oxide (CIPW7), iron oxide (CIPR101), carbon black (CIPB 6 ) and copper phthalocyanine blue (β-type CIPB15: 3) pigments shown in Table 3 were mixed with magnesium stearate and low molecular weight polyethylene wax (PE wax) , respectively. The mixture was mixed with a high-speed mixer at the mixing ratio (parts) shown in Table 3 to obtain a powder. Next, this mixture was heated and melt-kneaded by a pressure kneader, and then finely ground by a three-roll mill. The obtained kneaded material was further pulverized with a crusher to form irregular shaped particles having good pigment dispersion. The amorphous particulates in the mixing ratio shown in Table 3, particulate silicon oxide - mixed B and isotactic polypropylene Pile emissions, and melt-kneaded in a twin screw extruder (L / D = 30), into strands After extrusion, it was processed into 100 parts of a cylindrical black masterbatch color having a length of 2 to 3 mm by a rotary blade cutting type pelletizer. The obtained master batch color was added in an amount of 3 parts to 97 parts of polypropylene mixed with talc, and subjected to an injection molding streak generation test (Method B) and a physical property test. Results are set forth in Table 4, the colored resin composition using the masterbatch color This is neither streaks, the physical properties retention was also good.
表3中の配合原料の詳細は以下の通り。
低分子量ポリエチレン:表1に記載された物と同一。
微粒子状酸化珪素−B:粒子径≦50nm、比表面積=120m2/gr、モノメチルトリクロロシラン表面処理シリカ
ステアリン酸マグネシウム:ステアリン酸塩(55%)、パルミチン酸塩、ミリスチン酸塩の混合品、融点(示差熱量分析)=118℃
アイソタクチックPP−A:ホモポリプロピレン
MFR(230℃荷重2.16Kg)=350gr/10min
タルク練り込みポリプロピレン(PP):表1に記載された物と同一。
The details of the ingredients in Table 3 are as follows.
Low molecular weight polyethylene: the same as described in Table 1.
Particulate silicon oxide-B: particle diameter ≦ 50 nm, specific surface area = 120 m 2 / gr, monomethyltrichlorosilane surface-treated silica magnesium stearate: a mixture of stearate (55%), palmitate and myristate, melting point (Differential calorimetry) = 118 ° C
Isotactic PP-A: homopolypropylene MFR (230 ° C load 2.16Kg) = 350gr / 10min
Talc kneaded polypropylene (PP): same as the one described in Table 1 .
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JP3571780B2 (en) * | 1994-11-15 | 2004-09-29 | 住化カラー株式会社 | Polypropylene resin compound for molding |
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JPH09255831A (en) * | 1996-03-25 | 1997-09-30 | Toyo Ink Mfg Co Ltd | Resin composition for coloring and its utilization |
JP3330046B2 (en) * | 1996-05-29 | 2002-09-30 | 大日精化工業株式会社 | Masterbatch for coloring polypropylene-based composite materials |
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