JPH06306218A - Polyethylene composition - Google Patents
Polyethylene compositionInfo
- Publication number
- JPH06306218A JPH06306218A JP11935993A JP11935993A JPH06306218A JP H06306218 A JPH06306218 A JP H06306218A JP 11935993 A JP11935993 A JP 11935993A JP 11935993 A JP11935993 A JP 11935993A JP H06306218 A JPH06306218 A JP H06306218A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- parts
- value
- polyethylene
- eye
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 15
- -1 Polyethylene Polymers 0.000 title claims description 41
- 239000004698 Polyethylene Substances 0.000 title claims description 38
- 229920000573 polyethylene Polymers 0.000 title claims description 38
- XOOUIPVCVHRTMJ-UHFFFAOYSA-L zinc stearate Chemical compound [Zn+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XOOUIPVCVHRTMJ-UHFFFAOYSA-L 0.000 claims abstract description 28
- VIALJPAGUCTUBQ-UHFFFAOYSA-L magnesium;12-hydroxyoctadecanoate Chemical compound [Mg+2].CCCCCCC(O)CCCCCCCCCCC([O-])=O.CCCCCCC(O)CCCCCCCCCCC([O-])=O VIALJPAGUCTUBQ-UHFFFAOYSA-L 0.000 claims abstract description 10
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 8
- 239000004700 high-density polyethylene Substances 0.000 claims abstract description 8
- 239000006185 dispersion Substances 0.000 claims abstract description 3
- HQKMJHAJHXVSDF-UHFFFAOYSA-L magnesium stearate Substances [Mg+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O HQKMJHAJHXVSDF-UHFFFAOYSA-L 0.000 claims description 17
- 235000019359 magnesium stearate Nutrition 0.000 claims description 17
- 239000000155 melt Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 abstract description 3
- 238000010924 continuous production Methods 0.000 abstract description 2
- 238000002156 mixing Methods 0.000 abstract description 2
- 229940063583 high-density polyethylene Drugs 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 1
- 238000009825 accumulation Methods 0.000 description 20
- 230000035508 accumulation Effects 0.000 description 20
- 239000000314 lubricant Substances 0.000 description 20
- 230000000052 comparative effect Effects 0.000 description 14
- 238000001125 extrusion Methods 0.000 description 7
- 239000003054 catalyst Substances 0.000 description 5
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 3
- 239000005977 Ethylene Substances 0.000 description 3
- 239000001110 calcium chloride Substances 0.000 description 3
- 229910001628 calcium chloride Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- VXNZUUAINFGPBY-UHFFFAOYSA-N 1-Butene Chemical compound CCC=C VXNZUUAINFGPBY-UHFFFAOYSA-N 0.000 description 2
- AFFLGGQVNFXPEV-UHFFFAOYSA-N 1-decene Chemical compound CCCCCCCCC=C AFFLGGQVNFXPEV-UHFFFAOYSA-N 0.000 description 2
- LIKMAJRDDDTEIG-UHFFFAOYSA-N 1-hexene Chemical compound CCCCC=C LIKMAJRDDDTEIG-UHFFFAOYSA-N 0.000 description 2
- KWKAKUADMBZCLK-UHFFFAOYSA-N 1-octene Chemical compound CCCCCCC=C KWKAKUADMBZCLK-UHFFFAOYSA-N 0.000 description 2
- 241000270722 Crocodylidae Species 0.000 description 2
- 229940043430 calcium compound Drugs 0.000 description 2
- 150000001674 calcium compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- LNNWVNGFPYWNQE-GMIGKAJZSA-N desomorphine Chemical compound C1C2=CC=C(O)C3=C2[C@]24CCN(C)[C@H]1[C@@H]2CCC[C@@H]4O3 LNNWVNGFPYWNQE-GMIGKAJZSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- YWAKXRMUMFPDSH-UHFFFAOYSA-N pentene Chemical compound CCCC=C YWAKXRMUMFPDSH-UHFFFAOYSA-N 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002966 varnish Substances 0.000 description 2
- 239000004711 α-olefin Substances 0.000 description 2
- ULQISTXYYBZJSJ-UHFFFAOYSA-N 12-hydroxyoctadecanoic acid Chemical compound CCCCCCC(O)CCCCCCCCCCC(O)=O ULQISTXYYBZJSJ-UHFFFAOYSA-N 0.000 description 1
- 229940114069 12-hydroxystearate Drugs 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 229920000089 Cyclic olefin copolymer Polymers 0.000 description 1
- 208000031969 Eye Hemorrhage Diseases 0.000 description 1
- 208000032843 Hemorrhage Diseases 0.000 description 1
- 239000002841 Lewis acid Substances 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 description 1
- 239000008116 calcium stearate Substances 0.000 description 1
- 235000013539 calcium stearate Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 150000007517 lewis acids Chemical class 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002685 polymerization catalyst Substances 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、薄肉パイプの成形性に
優れるポリエチレン組成物であって、連続生産する工程
で目ヤニ（ダイスのノズルの周囲に蓄積した着色ヤニ状
物をいう）、なみだ（ダイスのノズルの周囲に滑剤の溶
融物が固化した表面光沢を有する球形状の蓄積物をい
う）等の滞留物の発生をなくしたポリエチレン組成物に
関する。FIELD OF THE INVENTION The present invention relates to a polyethylene composition having excellent moldability for thin-walled pipes, which is used in a continuous production process, such as eye varnish (colored tarred material accumulated around the die nozzle), The present invention relates to a polyethylene composition that eliminates the generation of stagnant substances (such as a spherical accumulation having a surface gloss obtained by solidifying a melt of a lubricant around the nozzle of a die).
【０００２】[0002]
【従来の技術】チーグラー系触媒によって重合されたポ
リエチレンは、ルイス酸であるチーグラー系触媒を中和
するためにステアリン酸カルシウムのような脂肪酸塩が
添加される。この脂肪酸塩は中和剤として作用するだけ
でなく、ポリエチレンの溶融押出時の吐出量を大きくす
る作用も持っている。2. Description of the Related Art Polyethylene polymerized by a Ziegler type catalyst is added with a fatty acid salt such as calcium stearate to neutralize the Ziegler type catalyst which is a Lewis acid. This fatty acid salt not only acts as a neutralizing agent, but also has the action of increasing the discharge amount during melt extrusion of polyethylene.
【０００３】[0003]
【発明が解決しようとする課題】ポリエチレンの溶融押
出を長時間続けると、ダイスのノズルの周囲にヤニ状物
質が少しずつ蓄積して着色する。この蓄積物は一般に目
ヤニ、なみだといわれており、目ヤニは樹脂の劣化によ
り低分子量化したもの及びなみだは滑剤が溶融したもの
である。これらの蓄積物はやがてダイスから離れて押し
出され、製品に混入するだけでなく、蓄積物の付着した
部分で押し出されるポリエチレンが切れやすくなるた
め、押出成形の作業性が低下する。When the melt extrusion of polyethylene is continued for a long time, a tar-like substance is accumulated little by little around the nozzle of the die and is colored. This accumulated material is generally referred to as an eye varnish or a nick, and the eye dent has a low molecular weight due to deterioration of the resin and a nick is a melt of a lubricant. These accumulations are extruded away from the die and are not only mixed into the product, but also the polyethylene extruded at the portion where the accumulations are adhered is likely to be cut off, which lowers the workability of extrusion molding.
【０００４】従って、本発明はかかる目ヤニ、なみだの
蓄積を抑制して、成形性を向上させたポリエチレン組成
物を提供することを目的とする。[0004] Therefore, an object of the present invention is to provide a polyethylene composition which has improved moldability by suppressing the accumulation of such eye blemishes and seams.
【０００５】[0005]
【課題を解決するための手段】本発明者らは鋭意検討し
た結果、ポリエチレンのＱ値を15〜25に狭くしたポリマ
ーとし、かつ塩基性12−ヒドロキシステアリン酸マグネ
シウムとステアリン酸亜鉛を特定の割合で該ポリエチレ
ンに添加したポリエチレン組成物が目ヤニ、なみだの発
生が著しく減少することを見出し、本発明を完成した。
すなわち、本発明は、Ｑ値（分子量分散指数を表し、次
式：Ｑ値＝重量平均分子量／数平均分子量により求めら
れる。）が25以下、好ましくは15〜25の高密度ポリエチ
レン100重量部に対して塩基性12−ヒドロキシステアリ
ン酸マグネシウムが0.01〜0.20重量部であり、かつステ
アリン酸亜鉛が0.01〜0.20重量部からなるポリエチレン
組成物であり、これは薄肉パイプの成形性に優れた組成
物である。Means for Solving the Problems As a result of intensive studies, the present inventors have made polyethylene a polymer in which the Q value is narrowed to 15 to 25, and basic magnesium 12-hydroxystearate and zinc stearate in a specific ratio. It was found that the polyethylene composition added to the polyethylene markedly reduces the occurrence of eye blemishes and crevices, and completed the present invention.
That is, according to the present invention, 100 parts by weight of high-density polyethylene having a Q value (representing a molecular weight dispersion index, represented by the following formula: Q value = weight average molecular weight / number average molecular weight) of 25 or less, preferably 15 to 25 is used. On the other hand, a basic 12-hydroxy magnesium stearate is 0.01 to 0.20 parts by weight, and zinc stearate is a polyethylene composition consisting of 0.01 to 0.20 parts by weight, which is a composition excellent in moldability of thin-walled pipes. is there.
【０００６】本発明で用いる高密度ポリエチレンは、エ
チレンの単独重合体、エチレン成分を50重量％以上含有
するエチレン−α−オレフィン共重合体をあげることが
でき、エチレンと共重合可能なα−オレフィンとしては
プロピレン、１−ブテン、１−ペンテン、１−ヘキセ
ン、１−オクテン、１−デセンなどがあげられる。重合
触媒は限定されないが、一般にチーグラー系触媒が用い
られる。また、ポリエチレンの密度は、ＡＳＴＭ−Ｄ15
05における測定値が0.94〜0.96ｇ／cm3 であり、ＡＳＴ
Ｍ−Ｄ1238による荷重2.16kg、温度 190℃でのメルトイ
ンデックスが0.05〜0.50ｇ／10分である。密度とメルト
インデックスがこの範囲からはずれると、ポリエチレン
の機械的強度が低下し、好ましくない。Examples of the high-density polyethylene used in the present invention include an ethylene homopolymer and an ethylene-α-olefin copolymer containing 50% by weight or more of an ethylene component, and an α-olefin copolymerizable with ethylene. Examples include propylene, 1-butene, 1-pentene, 1-hexene, 1-octene and 1-decene. The polymerization catalyst is not limited, but generally a Ziegler type catalyst is used. The density of polyethylene is ASTM-D15.
The measured value in 05 is 0.94 to 0.96 g / cm 3 , and AST
The melt index by M-D1238 at a load of 2.16 kg and a temperature of 190 ° C is 0.05 to 0.50 g / 10 minutes. If the density and the melt index deviate from this range, the mechanical strength of polyethylene decreases, which is not preferable.
【０００７】本発明で用いるポリエチレンは、Ｑ値が25
以下、好ましくは15〜25である。Ｑ値が25より大きい場
合は、低分子量成分が多くなり、目ヤニの発生を多くす
る原因となるので好ましくない。本発明組成物は、Ｑ値
が25以下の高密度ポリエチレン100 重量部に対して、塩
基性12−ヒドロキシステアリン酸マグネシウム0.01〜0.
20重量部とステアリン酸亜鉛0.01〜0.20重量部とを含
む。塩基性12−ヒドロキシステアリン酸マグネシウムと
ステアリン酸亜鉛が共に無添加の場合は、ポリエチレン
のＱ値が25以下であっても目ヤニが発生する。また、塩
基性12−ヒドロキシステアリン酸マグネシウム及びステ
アリン酸亜鉛の和が0.40重量部を越えるとなみだが発生
して好ましくない。更に塩基性12−ヒドロキシステアリ
ン酸マグネシウム又は、ステアリン酸亜鉛の一方が0.20
重量部を越えると、なみだが発生するので好ましくな
い。最も適した添加量は、塩基性12−ヒドロキシステア
リン酸マグネシウムが0.03〜0.15重量部でかつステアリ
ン酸亜鉛が0.05〜0.15重量部であり、Ｑ値が15〜25の高
密度ポリエチレン100 重量部に対して塩基性12−ヒドロ
キシステアリン酸マグネシウムとステアリン酸亜鉛の添
加量の和が0.25〜0.40重量部の範囲のものが目ヤニ及び
なみだが発生しない最適の範囲である。塩基性12−ヒド
ロキシステアリン酸マグネシウムとステアリン酸亜鉛の
添加量の和が0.25重量部未満ではポリエチレンの押出成
形時の吐出量が少なかったり、目ヤニが減少せず、ある
いはチーグラー系触媒の中和が不完全になる。また、0.
40重量部を越えると、滑剤の添加量が過多になり、ポリ
エチレンの溶融押出時にダイスのノズルの周囲になみだ
が発生して好ましくない。The polyethylene used in the present invention has a Q value of 25.
Below, it is preferably 15 to 25. When the Q value is larger than 25, the amount of low molecular weight components increases, which causes the occurrence of eye blemishes, which is not preferable. The composition of the present invention contains 0.01 to 0.1 parts by weight of basic magnesium 12-hydroxystearate per 100 parts by weight of high density polyethylene having a Q value of 25 or less.
20 parts by weight and 0.01 to 0.20 parts by weight of zinc stearate are included. When both basic 12-hydroxy magnesium stearate and zinc stearate are not added, even if the Q value of polyethylene is 25 or less, eye bleeding occurs. Further, if the sum of basic magnesium 12-hydroxystearate and zinc stearate exceeds 0.40 parts by weight, it is not preferable because it is generated as much as possible. Further, one of basic 12-hydroxy magnesium stearate or zinc stearate is 0.20.
When it exceeds the weight part, it is not preferable because it is generated as it is. The most suitable addition amount is 0.03 to 0.15 parts by weight of basic 12-hydroxystearate and 0.05 to 0.15 parts by weight of zinc stearate, and 100 parts by weight of high density polyethylene having a Q value of 15 to 25. When the sum of the amounts of basic magnesium 12-hydroxystearate and zinc stearate added is in the range of 0.25 to 0.40 parts by weight, the optimum range in which no eye blemishes and no seams occur. When the sum of the amounts of basic magnesium 12-hydroxystearate and zinc stearate added is less than 0.25 parts by weight, the amount of discharge during extrusion of polyethylene is small, the eye die does not decrease, or the Ziegler-based catalyst is not neutralized. Become incomplete. Also, 0.
If it exceeds 40 parts by weight, the amount of the lubricant added becomes excessive, and bleeding occurs around the nozzle of the die during melt extrusion of polyethylene, which is not preferable.
【０００８】[0008]
【作用】目ヤニの成分は低分子量のポリエチレンとカル
シウム化合物が比較的多い。カルシウム化合物としては
脂肪酸カルシウムが特に多いわけではなく、チーグラー
触媒を中和して生成した塩化カルシウムが多い。即ち、
低分子量のポリエチレンと塩化カルシウムが相乗的に目
ヤニとなみだの発生現象を起こしているものと思われ
る。本発明では、Ｑ値を小さくして、低分子量成分をな
くすとともに、特定の脂肪酸アルカリ金属塩の組み合わ
せにより、該塩化カルシウムの分散性を向上させ、ノズ
ル周囲における蓄積を減少させるものと考えられる。[Function] The components of the eye tar are relatively low-molecular weight polyethylene and calcium compounds. Fatty acid calcium is not particularly abundant as the calcium compound, but calcium chloride produced by neutralizing the Ziegler catalyst is abundant. That is,
It is considered that low-molecular-weight polyethylene and calcium chloride synergistically cause the occurrence of eye blemishes and blemishes. In the present invention, it is considered that the Q value is reduced to eliminate low molecular weight components, and the dispersibility of the calcium chloride is improved and the accumulation around the nozzle is reduced by the combination of a specific fatty acid alkali metal salt.
【０００９】[0009]
【発明の効果】本発明のポリエチレン組成物は押出成形
時に目ヤニやなみだの発生が少なく、成形性に優れてい
る。EFFECTS OF THE INVENTION The polyethylene composition of the present invention is excellent in moldability with less generation of eye blemishes and run-out during extrusion molding.
【００１０】[0010]
【実施例】以下、実施例および比較例によって本発明を
具体的に説明するが、本発明はこれらによって限定され
るものではない。目ヤニ発生の判定方法としては、東芝
ＴＥＭ35Ｂの二軸押出機をテスト機として使用した。
尚、押出条件は次の通りである。 押出機：東芝ＴＥＭ35Ｂ（二軸押出機） Ｌ／Ｄ＝31.9 設定温度：Ｃ１／200, Ｃ２〜Ｃ３／210, Ｃ４／220, Ｃ５／210, Ｈ／210（℃） スクリュウ回転数：200 r.p.m. 吐出量：10kg／時 樹脂温度：250〜260 ℃ 樹脂圧力：17〜20kg／cm2 目ヤニ判定：スタート時、１時間後、２時間後に目ヤニ
発生の有無を判定する。[Examples] The present invention will be specifically described below with reference to Examples and Comparative Examples, but the present invention is not limited thereto. As a method for determining the occurrence of eye blemishes, a twin-screw extruder of Toshiba TEM35B was used as a test machine.
The extrusion conditions are as follows. Extruder: Toshiba TEM35B (Twin screw extruder) L / D = 31.9 Setting temperature: C1 / 200, C2-C3 / 210, C4 / 220, C5 / 210, H / 210 (° C) Screw rotation speed: 200 rpm discharge Amount: 10 kg / hour Resin temperature: 250 to 260 ° C Resin pressure: 17 to 20 kg / cm Second die judgment: At the start, 1 hour, 2 hours later, the presence or absence of eye die is determined.
【００１１】実施例１ Ｑ値25のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.15重量部とステアリン酸
亜鉛0.10重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、スタート時、１時間後、２
時間後に目ヤニの発生は認められず、目ヤニ防止の効果
は大であった。Example 1 100 parts by weight of polyethylene having a Q value of 25 was mixed with 0.15 parts by weight of basic 12-hydroxy magnesium stearate and 0.10 parts by weight of zinc stearate with a Henschel mixer, and then a Toshiba TEM35B test machine was used. The generation test was carried out, and the generation and accumulation of eye blemishes were observed at 1 hour and 2 hours after the start.
No generation of eye blemishes was observed after the lapse of time, and the effect of preventing eye blemishes was great.
【００１２】実施例２ Ｑ値20のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.15重量部とステアリン酸
亜鉛0.15重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、スタート時、１時間後、２
時間後に目ヤニの発生は認められず、目ヤニ防止の効果
は大であった。Example 2 100 parts by weight of polyethylene having a Q value of 20 was mixed with 0.15 part by weight of basic 12-hydroxy magnesium stearate and 0.15 part by weight of zinc stearate with a Henschel mixer, and then a TOSHIBA TEM 35B test machine was used. The generation test was carried out, and the generation and accumulation of eye blemishes were observed at 1 hour and 2 hours after the start.
No generation of eye blemishes was observed after the lapse of time, and the effect of preventing eye blemishes was great.
【００１３】実施例３ Ｑ値15のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.20重量部とステアリン酸
亜鉛0.20重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、スタート時、１時間後、２
時間後に目ヤニの発生は認められず、目ヤニ防止の効果
は大であった。Example 3 100 parts by weight of polyethylene having a Q value of 15 was mixed with 0.20 part by weight of basic 12-hydroxy magnesium stearate and 0.20 part by weight of zinc stearate in a Henschel mixer, and then a TOSHIBA TEM 35B test machine was used. The generation test was carried out, and the generation and accumulation of eye blemishes were observed at 1 hour and 2 hours after the start.
No generation of eye blemishes was observed after the lapse of time, and the effect of preventing eye blemishes was great.
【００１４】比較例１ Ｑ値28のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.15重量部とステアリン酸
亜鉛0.10重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、スタートして30分後に目ヤ
ニが発生して、徐々に発達して蓄積されて行った。塩基
性12−ヒドロキシステアリン酸マグネシウムおよびステ
アリン酸亜鉛（以下、総称して滑剤という）の和が0.25
重量部であってもＱ値が28と大きいと目ヤニが発生する
ことが判った。Comparative Example 1 100 parts by weight of polyethylene having a Q value of 28 was mixed with 0.15 parts by weight of basic magnesium 12-hydroxystearate and 0.10 parts by weight of zinc stearate with a Henschel mixer, and then a TOSHIBA TEM 35B tester was used. A generation test was carried out, and at 1 hour and 2 hours after the start, the generation and accumulation state of eye crocodile was observed, but the eye crocodile occurred 30 minutes after the start and gradually developed and accumulated. I went. The sum of basic 12-hydroxy magnesium stearate and zinc stearate (hereinafter collectively referred to as lubricant) is 0.25.
It has been found that even if the weight part is large, a large Q value of 28 causes eye blemishes.
【００１５】比較例２ Ｑ値30のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.22重量部とステアリン酸
亜鉛0.22重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、滑剤の和が0.44重量部と大
きいため、スタート直後にダイス部分より過剰の滑剤が
溶出したため実験を中止した。COMPARATIVE EXAMPLE 2 100 parts by weight of polyethylene having a Q value of 30 was mixed with 0.22 parts by weight of basic 12-hydroxy magnesium stearate and 0.22 parts by weight of zinc stearate with a Henschel mixer, and then a Toshiba TEM35B test machine was used. A generation test was carried out, and at the start, one hour and two hours later, the generation and accumulation of eye blemishes were observed. The sum of the lubricant was as large as 0.44 parts by weight, so immediately after the start, excess lubricant was added from the die part. Was dissolved, the experiment was stopped.
【００１６】比較例３ Ｑ値26のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.22重量部とステアリン酸
亜鉛0.21重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、滑剤の和が0.43重量部と大
きいため、スタート直後に、ダイス部分より過剰の滑剤
が溶出したので実験を中止した。Comparative Example 3 100 parts by weight of polyethylene having a Q value of 26, 0.22 parts by weight of basic magnesium 12-hydroxystearate and 0.21 part by weight of zinc stearate were mixed in a Henschel mixer, and then a TOSHIBA TEM 35B tester was used. A generation test was carried out, and after 1 hour and 2 hours after the start, the generation and accumulation of eye blemishes were observed. The sum of lubricant was as large as 0.43 parts by weight. The lubricant was eluted and the experiment was stopped.
【００１７】比較例４ Ｑ値28のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.21重量部とステアリン酸
亜鉛0.21重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、滑剤の和が0.42重量部と大
きいため、スタート直後に、ダイス部分より過剰の滑剤
が溶出したので実験を中止した。Comparative Example 4 100 parts by weight of polyethylene having a Q value of 28 was mixed with 0.21 part by weight of basic 12-hydroxy magnesium stearate and 0.21 part by weight of zinc stearate with a Henschel mixer, and then a TOSHIBA TEM 35B tester was used. A generation test was conducted, and at 1 hour and 2 hours after the start, the generation and accumulation of eye blemishes were observed. The sum of lubricant was as large as 0.42 parts by weight. The lubricant was eluted and the experiment was stopped.
【００１８】比較例５ Ｑ値28のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.21重量部とステアリン酸
亜鉛0.20重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、滑剤の和が0.41重量部と大
きいため、スタートして30分後にダイス部分より過剰の
滑剤が溶出した。Comparative Example 5 100 parts by weight of polyethylene having a Q value of 28 was mixed with 0.21 part by weight of basic 12-hydroxy magnesium stearate and 0.20 part by weight of zinc stearate with a Henschel mixer, and then a TOSHIBA TEM 35B tester was used. A generation test was carried out, and at 1 hour and 2 hours after the start, the generation and accumulation of eye blemishes were observed. The sum of lubricant was as large as 0.41 parts by weight. Excess lubricant was eluted.
【００１９】比較例６ Ｑ値28のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.15重量部とステアリン酸
亜鉛0.15重量部を加えて滑剤の和が0.30重量部のもの
を、ヘンシェルミキサーで混合したのち、東芝ＴＥＭ35
Ｂのテスト機で目ヤニ発生のテストを実施し、スタート
時、１時間後、２時間後の目ヤニの発生と蓄積状態を観
察した。スタートして30分後に目ヤニが発生した。滑剤
の和は0.30重量部であったが、Ｑ値が28と大きいために
目ヤニが発生した。Comparative Example 6 To 100 parts by weight of polyethylene having a Q value of 28, 0.15 parts by weight of basic magnesium 12-hydroxystearate and 0.15 parts by weight of zinc stearate were added, and the sum of lubricants was 0.30 parts by weight. After mixing, Toshiba TEM35
A test for the generation of eye blemishes was carried out by the test machine of B, and the generation and accumulation state of eye blemishes were observed at the start, 1 hour and 2 hours later. Thirty minutes after the start, eye blemishes occurred. The sum of lubricants was 0.30 parts by weight, but the Q value was as large as 28, causing eye blemishes.
【００２０】比較例７ Ｑ値28のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.15重量部とステアリン酸
亜鉛0.14重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、スタートして30分後に、目
ヤニが発生した。滑剤の和は0.29重量部であったが、Ｑ
値が28と大きいために目ヤニが発生した。Comparative Example 7 100 parts by weight of a polyethylene having a Q value of 28 was mixed with 0.15 parts by weight of basic 12-hydroxy magnesium stearate and 0.14 parts by weight of zinc stearate with a Henschel mixer, and then mixed with a Toshiba TEM35B tester. A generation test was carried out, and at the start, one hour and two hours later, the generation and accumulation state of eye blemishes were observed, but 30 minutes after the start, eye blemishes occurred. The sum of lubricants was 0.29 parts by weight, but Q
Since the value was as large as 28, eye blemishes occurred.
【００２１】比較例８ Ｑ値28のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.15重量部とステアリン酸
亜鉛0.10重量部を、ヘンシェルミキサーで混合したの
ち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテストを
実施し、スタート時、１時間後、２時間後の目ヤニの発
生と蓄積状態を観察したが、スタートして30分後に、目
ヤニが発生した。滑剤の和は0.25重量部であったが、Ｑ
値が28と大きいために目ヤニが発生した。Comparative Example 8 100 parts by weight of a polyethylene having a Q value of 28 was mixed with 0.15 parts by weight of basic 12-hydroxy magnesium stearate and 0.10 parts by weight of zinc stearate with a Henschel mixer, and then a TOSHIBA TEM 35B tester was used. A generation test was carried out, and at the start, one hour and two hours later, the generation and accumulation state of eye blemishes were observed, but 30 minutes after the start, eye blemishes occurred. The sum of lubricants was 0.25 parts by weight, but Q
Since the value was as large as 28, eye blemishes occurred.
【００２２】比較例９ Ｑ値20のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.22重量部とステアリン酸
亜鉛0.22重量部を加えて、ヘンシェルミキサーで混合し
たのち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテス
トを実施し、スタート時、１時間後、２時間後の目ヤニ
の発生と蓄積状態を観察したが、滑剤の和が0.44重量部
と大きいため、スタートして30分後にダイス部分より過
剰の滑剤が溶出した。Comparative Example 9 0.22 parts by weight of basic 12-hydroxy magnesium stearate and 0.22 parts by weight of zinc stearate were added to 100 parts by weight of polyethylene having a Q value of 20 and mixed by a Henschel mixer, and then, using a Toshiba TEM35B tester. We performed a test for the occurrence of eye blemishes, and observed the occurrence and accumulation of eye blemishes one hour and two hours after the start. Since the sum of lubricant was as large as 0.44 parts by weight, the dies were made 30 minutes after the start. Excess lubricant was eluted from the part.
【００２３】比較例10 Ｑ値20のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.21重量部とステアリン酸
亜鉛0.20重量部を加えて、ヘンシェルミキサーで混合し
たのち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテス
トを実施し、スタート時、１時間後、２時間後の目ヤニ
の発生と蓄積状態を観察したが、滑剤の和が0.41重量部
と大きいため、スタートして30分後にダイス部分より過
剰の滑剤が溶出した。Comparative Example 10 To 100 parts by weight of polyethylene having a Q value of 20 were added 0.21 part by weight of basic 12-hydroxy magnesium stearate and 0.20 part by weight of zinc stearate, and the mixture was mixed with a Henschel mixer. A test for the generation of eye blemishes was carried out, and at the start, after 1 hour and 2 hours, the generation and accumulation of eye blemishes were observed. However, the sum of the lubricant was as large as 0.41 parts by weight, so 30 minutes after starting the die Excess lubricant was eluted from the part.
【００２４】比較例11 Ｑ値20のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.12重量部とステアリン酸
亜鉛0.12重量部を加えて、ヘンシェルミキサーで混合し
たのち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテス
トを実施し、スタート時、１時間後、２時間後の目ヤニ
の発生と蓄積状態を観察したが、スタートして30分後に
ダイス部分に目ヤニが発生した。Comparative Example 11 0.12 parts by weight of basic 12-hydroxy magnesium stearate and 0.12 parts by weight of zinc stearate were added to 100 parts by weight of polyethylene having a Q value of 20, and mixed in a Henschel mixer. A test for the generation of eye blemishes was carried out, and at the start, after 1 hour and 2 hours, the occurrence and accumulation state of eye blemishes were observed, and 30 minutes after the start, eye blemishes were generated on the die part.
【００２５】比較例12 Ｑ値20のポリエチレン100 重量部に塩基性12−ヒドロキ
システアリン酸マグネシウム0.11重量部とステアリン酸
亜鉛0.11重量部を加えて、ヘンシェルミキサーで混合し
たのち、東芝ＴＥＭ35Ｂのテスト機で目ヤニ発生のテス
トを実施し、スタート時、１時間後、２時間後の目ヤニ
の発生、蓄積状態を観察したが、スタートして30分後に
ダイス部分に目ヤニが発生した。Comparative Example 12 To 100 parts by weight of polyethylene having a Q value of 20 were added 0.11 part by weight of basic 12-hydroxy magnesium stearate and 0.11 part by weight of zinc stearate, and the mixture was mixed with a Henschel mixer. A test for the occurrence of eye blemishes was carried out, and at the start, one hour and two hours later, the appearance and accumulation state of eye blemishes were observed, but 30 minutes after the start, die blemishes occurred on the die part.
【００２６】実施例および比較例の結果を以下の表にま
とめて示す。The results of Examples and Comparative Examples are summarized in the table below.
【００２７】[0027]
【表１】 [Table 1]
Claims (2)
ックス0.05〜0.50ｇ／10分で、かつＱ値（分子量分散指
数を表し、次式：Ｑ値＝重量平均分子量／数平均分子量
により求められる。）が25以下の高密度ポリエチレン10
0 重量部に対して塩基性12−ヒドロキシステアリン酸マ
グネシウム0.01〜0.20重量部とステアリン酸亜鉛0.01〜
0.20重量部からなり、かつ塩基性12−ヒドロキシステア
リン酸マグネシウムとステアリン酸亜鉛の和が0.25〜0.
40重量部であるポリエチレン組成物。1. A density of 0.94 to 0.96 g / cm 3 , a melt index of 0.05 to 0.50 g / 10 minutes, and a Q value (representing a molecular weight dispersion index, obtained by the following formula: Q value = weight average molecular weight / number average molecular weight). High density polyethylene 10 or less
0-12 parts by weight of basic 12-hydroxy magnesium stearate 0.01-0.20 parts by weight and zinc stearate 0.01-
0.20 parts by weight, and the sum of basic magnesium 12-hydroxystearate and zinc stearate is 0.25-0.
A polyethylene composition which is 40 parts by weight.
ックス0.05〜0.50ｇ／10分で、かつＱ値が15〜25の高密
度ポリエチレンを用いる請求項１記載のポリエチレン組
成物。2. The polyethylene composition according to claim 1, wherein a high density polyethylene having a density of 0.94 to 0.96 g / cm 3 , a melt index of 0.05 to 0.50 g / 10 minutes and a Q value of 15 to 25 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11935993A JP3456220B2 (en) | 1993-04-23 | 1993-04-23 | Polyethylene composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11935993A JP3456220B2 (en) | 1993-04-23 | 1993-04-23 | Polyethylene composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06306218A true JPH06306218A (en) | 1994-11-01 |
| JP3456220B2 JP3456220B2 (en) | 2003-10-14 |
Family
ID=14759545
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11935993A Expired - Lifetime JP3456220B2 (en) | 1993-04-23 | 1993-04-23 | Polyethylene composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3456220B2 (en) |
-
1993
- 1993-04-23 JP JP11935993A patent/JP3456220B2/en not_active Expired - Lifetime
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| Publication number | Publication date |
|---|---|
| JP3456220B2 (en) | 2003-10-14 |
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