JP2519536B2 - Gasoline resistant blown hollow molded container - Google Patents
Gasoline resistant blown hollow molded containerInfo
- Publication number
- JP2519536B2 JP2519536B2 JP16660389A JP16660389A JP2519536B2 JP 2519536 B2 JP2519536 B2 JP 2519536B2 JP 16660389 A JP16660389 A JP 16660389A JP 16660389 A JP16660389 A JP 16660389A JP 2519536 B2 JP2519536 B2 JP 2519536B2
- Authority
- JP
- Japan
- Prior art keywords
- polyamide
- polyamide resin
- phosphorus
- molded container
- gasoline
- 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.)
- Expired - Fee Related
Links
Landscapes
- Containers Having Bodies Formed In One Piece (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明はポリアミド樹脂組成物から作られた耐ガソリ
ン性ブロー中空成形容器に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a gasoline resistant blow-molded container made of a polyamide resin composition.
ポリアミド樹脂製ブロー中空成形容器を製造する際、
ポリアミド樹脂に増粘作用を持たせる方法として、ポリ
アミド樹脂に変性ポリオレフィンを混合したり、エチレ
ン系アイオノマー及び／又はカルボキシ変性ニトリルゴ
ムを混合させる方法が一般的に用いられている（特公昭
42−12546号、特公昭55−41659号）。When manufacturing blow blow molded containers made of polyamide resin,
As a method of imparting a thickening effect to a polyamide resin, a method of mixing a modified polyolefin with the polyamide resin or a method of mixing an ethylene ionomer and / or a carboxy modified nitrile rubber is generally used (Japanese Patent Publication No.
42-12546, Japanese Patent Publication No. 55-41659).
これらの方法は、ブロー中空成形容器を製造する際、
口金から吐出された溶融ポリマーのドローダウンを少な
くし、溶融パリソンの形態を十分保持して、成形品の寸
法及び肉厚を均一にする特徴をもっている。These methods, when manufacturing blow blow molding container,
It has the characteristics that the drawdown of the molten polymer discharged from the die is reduced, the shape of the molten parison is sufficiently maintained, and the dimensions and wall thickness of the molded product are made uniform.
この方法は、ポリアミド樹脂を高粘度化するために、
ポリアミドを高重合化しなくてもよいという利点はある
が、得られた成形品は、ポリオレフィン系樹脂を含有し
ている為に、ポリアミド樹脂本来の耐ガソリン性がきわ
めて不十分になり、実用的な価値が半減していた。This method, in order to increase the viscosity of the polyamide resin,
Although there is an advantage that the polyamide does not have to be highly polymerized, since the obtained molded article contains a polyolefin resin, the original gasoline resistance of the polyamide resin becomes extremely insufficient, which makes it practical. The value was halved.
本発明は、かかる問題点を解決し、溶融時の粘性が高
く、パリソン特性がすぐれ、かつ、耐ガソリン性にすぐ
れたブロー中成形容器を提供することにある。The present invention has been made to solve the above problems, and to provide a molded-in-blow container having a high viscosity at the time of melting, an excellent parison property, and an excellent gasoline resistance.
すなわち、本発明は、数平均分子量20000以上のポリ
アミド樹脂と、リン系加工安定剤とのポリアミド樹脂組
成物からなり、前記リン系加工安定剤が、該組成物の全
量にたいして、0.01〜５重量％含まれていることを特徴
とする耐ガソリン性ブロー中空成形容器に関するもので
ある。That is, the present invention comprises a polyamide resin composition of a polyamide resin having a number average molecular weight of 20000 or more and a phosphorus-based processing stabilizer, wherein the phosphorus-based processing stabilizer is 0.01 to 5% by weight with respect to the total amount of the composition. The present invention relates to a gasoline-resistant blow blow-molded container characterized by being included.
本発明で用いられるポリアミド樹脂は、一般にポリア
ミド樹脂として知られているものであればいかなるもの
でもよく、例えば、ポリアミド６、ポリアミド66、ポリ
アミド11、ポリアミド12、ポリアミド610、ポリアミド6
12、ポリアミド６とポリアミド66のブレンド、ポリアミ
ド６とポリアミド12のブレンド、ポリアミド6/66コポリ
アミド等が挙げられる。なかでも、ポリアミド６、ポリ
アミド66やポリアミド6/66コポリマーが好ましい。The polyamide resin used in the present invention may be any one as long as it is generally known as a polyamide resin, for example, polyamide 6, polyamide 66, polyamide 11, polyamide 12, polyamide 610, polyamide 6
12, blends of polyamide 6 and polyamide 66, blends of polyamide 6 and polyamide 12, and polyamide 6/66 copolyamide. Of these, polyamide 6, polyamide 66 and polyamide 6/66 copolymer are preferred.
上記ポリアミド樹脂の数平均分子量は、20000以上、
好ましくは30000〜50000である。The number average molecular weight of the polyamide resin is 20,000 or more,
It is preferably 30,000 to 50,000.
数平均分子量が20000未満の場合は、安定した成形性
が得られず、厚みムラが生じやすい。When the number average molecular weight is less than 20,000, stable moldability cannot be obtained and thickness unevenness is likely to occur.
本発明で用いられる燐系加工安定剤としては、フェニ
ルフォスファイト系酸化防止剤を挙げることができる。
特に好ましい燐系加工安定剤としては、トリス（2,4−
ジ−ｔ−ブチルフェニル）フォスフアイト（千葉ガイギ
ー社製 商品名 Irgafos 168）やテトラキス（2,4−ジ
−ｔ−ブチルフェニル）−4,4′−ビフェニレンフォス
フォナイト（チバガイギー社製 商品名 Irgafos P−E
PQ FF）などが挙げられる。Examples of the phosphorus-based processing stabilizer used in the present invention include phenylphosphite-based antioxidants.
A particularly preferable phosphorus-based processing stabilizer is tris (2,4-
Di-t-butylphenyl) phosphite (trade name Irgafos 168 manufactured by Chiba Geigy) or tetrakis (2,4-di-t-butylphenyl) -4,4'-biphenylene phosphonite (trade name Irgafos manufactured by Ciba Geigy) P-E
PQ FF) and so on.
これらは、単独で用いても良いし、２種以上併用して
もよい。また、燐を含まない他の酸化防止剤を併用して
もよい。These may be used alone or in combination of two or more. Moreover, you may use together the other antioxidant which does not contain phosphorus.
これら燐系加工安定剤の添加量は、ポリアミド樹脂組
成物に対し、0.01〜５重量％、好ましくは0.1〜２重量
％である。The addition amount of these phosphorus-based processing stabilizers is 0.01 to 5% by weight, preferably 0.1 to 2% by weight, based on the polyamide resin composition.
燐系加工安定剤の添加量の添加量が、ポリアミド樹脂
に対し、余り少なすぎると、増粘効果が殆どなく、ま
た、余りに多くなり過ぎるとと、加工上困難になった
り、ブロー中空成形容器の物性が損なわれる等の問題が
ある。If the addition amount of the phosphorus-based processing stabilizer is too small with respect to the polyamide resin, there is almost no thickening effect, and if it is too large, it becomes difficult to process, or a blow hollow molding container. However, there is a problem that the physical properties of
上記燐系加工安定剤をポリアミド樹脂に含有させポリ
アミド樹脂組成物を得る方法としては、ポリアミドペレ
ットと前記加工安定剤などとをドライブレンドするか、
又は該ドライ物を押し出し機など用いて加熱・混練する
などの方法を採用することができる。As a method for obtaining a polyamide resin composition by incorporating the phosphorus-based processing stabilizer into a polyamide resin, dry blending of polyamide pellets and the processing stabilizer, or
Alternatively, a method of heating and kneading the dry material using an extruder or the like can be adopted.
本発明のブロー中空成形容器には、必要に応じて、滑
剤、結晶核剤、耐熱安定剤、耐候剤、帯電防止剤、着色
剤などの添加剤が配合されていてもよい。If necessary, the blow hollow molded container of the present invention may be mixed with additives such as a lubricant, a crystal nucleating agent, a heat stabilizer, a weather resistance agent, an antistatic agent, and a colorant.
ブロー中空成形容器は、前述のポリアミド組成物を用
いて、一般に知られている中空成型用の装置を用いて、
公知の通常の方法に従って、成型される。例えば、前記
ポリアミド樹脂組成物を溶融押し出しをして、まず、最
初にパリソンを一旦成型し、次いで、目的とする、三次
元的中空成型体を得る方法等を挙げることができる。Blow blow molding container, using the polyamide composition described above, using a generally known device for blow molding,
It is molded according to a known ordinary method. For example, a method of melt-extruding the polyamide resin composition, first molding the parison first, and then obtaining a desired three-dimensional hollow molded body can be mentioned.
以下、実施例について本発明を具体的に説明するが、
パリソン特性及び耐ガソリン性は、下記のようにして評
価した。Hereinafter, the present invention will be specifically described with reference to Examples.
The parison characteristics and gasoline resistance were evaluated as follows.
パリソン特性：耐ドローダウン性として評価した。耐
ドローダウン性は、50mmφの押出機につけた外径73mm
φ、内径67mmφの円形ダイスから、回転数80rpmで押し
出した時に、ダイス下面より12cmの長さの溶融パリソン
重量をW12、ダイス下面より60cmの長さのものをW60と
し、その比W60/W12値にて評価した。Parison property: evaluated as drawdown resistance. Drawdown resistance is 73mm outside diameter attached to a 50mmφ extruder
When extruding from a circular die of φ, inner diameter 67 mmφ at a rotation speed of 80 rpm, the weight of the molten parison 12 cm from the bottom surface of the die is W 12 , and that of 60 cm from the bottom surface of the die is W 60. Evaluation was made with a / W 12 value.
ポリアミドの押し出し温度は、230℃にておこなっ
た。The extrusion temperature of the polyamide was 230 ° C.
全くドローダウンしないものは５の値を示すが、今回
は3.5以上を（○）、3.5以下を不可（×）とした。Those that do not draw down at all show a value of 5, but this time, 3.5 or more (◯), 3.5 or less was not (x).
耐ガソリン性：日本製鋼所製射出成形機N140B IIを使
用し、260℃でダンベル１号試験片を作製した。得られ
た試験片を60℃のレギュラーガソリンに浸漬し、1000時
間処理後の重量増加率及び伸び保持率を評価した。Gasoline resistance: A dumbbell No. 1 test piece was prepared at 260 ° C. using an injection molding machine N140B II manufactured by Japan Steel Works. The obtained test piece was immersed in regular gasoline at 60 ° C., and the weight increase rate and elongation retention rate after 1000 hours of treatment were evaluated.
実施例１、２及び３ 数平均分子量が30000のポリアミド６（宇部興産
（株）製UBE1030B）に、燐系加工安定剤としてIrgafos
168（チバガイギー製）を各々0.25、0.5及び1.0重量％
添加したペレットを作製した。該ペレットを用い、前述
の方法に従い、パリソン特性及び耐ガソリン製を求めた
結果を第１表に示す。Examples 1, 2 and 3 Polyamide 6 having a number average molecular weight of 30,000 (UBE1030B manufactured by Ube Industries, Ltd.) was added to Irgafos as a phosphorus-based processing stabilizer.
168 (made by Ciba Geigy) 0.25, 0.5 and 1.0% by weight respectively
The added pellets were made. Table 1 shows the results of determining the parison characteristics and gasoline resistance of the pellets according to the method described above.
実施例４ 燐系加工安定剤としてIrgafos P−EPQ FF（チバガイ
ギー製）を0.25重量％添加した以外は実施例１、２、３
と同様な方法で評価した。Example 4 Examples 1, 2, 3 except that 0.25 wt% of Irgafos P-EPQ FF (manufactured by Ciba Geigy) was added as a phosphorus-based processing stabilizer.
It evaluated by the method similar to.
比較例１ 数平均分子量が30000のポリアミド６（宇部興産
（株）製UBE1030B）のみについて、実施例１と同様な評
価をした。Comparative Example 1 Only polyamide 6 having a number average molecular weight of 30,000 (UBE1030B manufactured by Ube Industries, Ltd.) was evaluated in the same manner as in Example 1.
比較例２ 燐系加工安定剤0.25重量％の代わりに、エチレン系ア
イオノマー樹脂（三井ポリケミカル社製ハイミラン185
5）を35重量％添加した他は実施例１と同様な評価を行
った。Comparative Example 2 Instead of 0.25% by weight of a phosphorus-based processing stabilizer, an ethylene-based ionomer resin (HIMIRAN 185 manufactured by Mitsui Polychemical Co., Ltd.) was used.
The same evaluation as in Example 1 was performed except that 35% by weight of 5) was added.
これらの結果を第１表に示す。 The results are shown in Table 1.
〔発明の効果〕 本発明によれば、溶融時の粘性が高く、パリソン特性
が優れた、耐ガソリン性ブロー中空成形容器が提供され
る。 EFFECTS OF THE INVENTION According to the present invention, there is provided a gasoline-resistant blow hollow molded container having a high viscosity during melting and excellent parison characteristics.
Claims (1)
と、リン系加工安定剤とのポリアミド樹脂組成物からな
り、前記リン系加工安定剤が、該組成物の全量に対し
て、0.01〜５重量％含まれていることを特徴とする耐ガ
ソリン性ブロー中空成形容器。1. A polyamide resin composition comprising a polyamide resin having a number average molecular weight of 20,000 or more and a phosphorus-based processing stabilizer, wherein the phosphorus-based processing stabilizer is 0.01 to 5 parts by weight based on the total amount of the composition. % Blown blow-molded container resistant to gasoline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16660389A JP2519536B2 (en) | 1989-06-30 | 1989-06-30 | Gasoline resistant blown hollow molded container |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16660389A JP2519536B2 (en) | 1989-06-30 | 1989-06-30 | Gasoline resistant blown hollow molded container |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0332815A JPH0332815A (en) | 1991-02-13 |
| JP2519536B2 true JP2519536B2 (en) | 1996-07-31 |
Family
ID=15834358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16660389A Expired - Fee Related JP2519536B2 (en) | 1989-06-30 | 1989-06-30 | Gasoline resistant blown hollow molded container |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2519536B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008254777A (en) * | 2007-04-05 | 2008-10-23 | Takagi Seiko Corp | Gasoline vessel having polyamide component, and polyamide body manufacturing process by fusion welding |
| ES2455245T3 (en) | 2009-08-04 | 2014-04-15 | Mitsubishi Gas Chemical Company, Inc. | Procedure to produce a container |
-
1989
- 1989-06-30 JP JP16660389A patent/JP2519536B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0332815A (en) | 1991-02-13 |
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