JPS5846141B2 - polypropylene composition - Google Patents
polypropylene compositionInfo
- Publication number
- JPS5846141B2 JPS5846141B2 JP14495878A JP14495878A JPS5846141B2 JP S5846141 B2 JPS5846141 B2 JP S5846141B2 JP 14495878 A JP14495878 A JP 14495878A JP 14495878 A JP14495878 A JP 14495878A JP S5846141 B2 JPS5846141 B2 JP S5846141B2
- Authority
- JP
- Japan
- Prior art keywords
- weight
- ethylene
- parts
- polypropylene
- propylene
- 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
Links
Description
【発明の詳細な説明】 本発明はポリプロピレンの組成物に関する。[Detailed description of the invention] The present invention relates to polypropylene compositions.
さらにくわしくは、ポリプロピレンのもつ優れた透明性
や剛性を維持しつつ、その欠点とされる低温耐衝撃性や
熱成形性を改善したポリプロピレンの組成物に関する。More specifically, the present invention relates to a polypropylene composition that maintains the excellent transparency and rigidity of polypropylene while improving its low-temperature impact resistance and thermoformability, which are disadvantageous to polypropylene.
従来、ポリプロピレンの低温耐衝撃性を向上させる方法
として、ポリプロピレンにエチレン・酢酸ビニル共重合
体を配合するという特公昭４０２４９１３号などが知ら
れているが充分でなく、また、ポリプロピレンに低密度
ポリエチレンとエチレン・プロピレン共重体および造核
剤を配合した特公昭４５−２３４１６号などがややすぐ
れたものとして知られているが、かえって透明性を低下
させるという欠点がある。Conventionally, as a method for improving the low-temperature impact resistance of polypropylene, Japanese Patent Publication No. 4,024,913 has been known in which polypropylene is blended with an ethylene/vinyl acetate copolymer, but this is not sufficient. Japanese Patent Publication No. 45-23416 containing an ethylene-propylene copolymer and a nucleating agent is known to be somewhat superior, but it has the disadvantage of reducing transparency.
さらに、低温耐衝撃性とともに熱成形性を改善したもの
に至っては、今日まで満足すべきものが見出されていな
い。Furthermore, to date, no satisfactory material has been found that has improved thermoformability as well as low-temperature impact resistance.
ここにおいて本発明者等は、ポリエチレンのもつ優れた
透明性や剛性を維持しつつ、その欠点である低温耐衝撃
性や熱成形性を向上させた配合につき種々検討を重ねた
結果、結晶性ポリプロピレン７０〜９８重量部、エチレ
ン・酢酸ビニル共重合体２〜３０重量部、エチレン・プ
ロピレン共重合体および／またはエチレン・プロピレン
・ジエン三元共重合体１〜１５重量部および造核剤０〜
２重量部からなる組成物が好適であることを見出すに至
った。Here, the present inventors have conducted various studies on a formulation that maintains the excellent transparency and rigidity of polyethylene while improving its shortcomings such as low-temperature impact resistance and thermoformability. 70 to 98 parts by weight, 2 to 30 parts by weight of ethylene/vinyl acetate copolymer, 1 to 15 parts by weight of ethylene/propylene copolymer and/or ethylene/propylene/diene terpolymer, and 0 to 15 parts by weight of nucleating agent.
It has been found that a composition comprising 2 parts by weight is suitable.
本発明で用いるエチレン・酢酸ビニル共重合体は酢酸ビ
ニル含量２〜８重量％、溶融体強度６１以上のものが熱
成形上適当であり、配合量２重量部以下では低温耐衝撃
性が減少し、３０重量部以上では剛性が減少するのでい
ずれも好ましくない。The ethylene/vinyl acetate copolymer used in the present invention has a vinyl acetate content of 2 to 8% by weight and a melt strength of 61 or higher, which is suitable for thermoforming.If the blending amount is 2 parts by weight or less, the low-temperature impact resistance decreases. If the amount exceeds 30 parts by weight, the rigidity decreases, so neither is preferable.
また、エチレン・プロピレン・ジエン三元共重合体とし
てはジエン成分をエチリデンノルボルネンやジシクロペ
ンタジェンなどとするものがあげられる。Examples of ethylene-propylene-diene terpolymers include those in which the diene component is ethylidene norbornene or dicyclopentadiene.
エチレン・プロピレン共重合体および／またはエチレン
・プロピレン・ジエン三元共重合体の配合量が１重量部
以下では低温耐衝撃性の向上に資する効果が小さく、１
５重量部以上では溶融体強度が低劣となり、熱成形性が
劣悪化する。If the amount of the ethylene/propylene copolymer and/or ethylene/propylene/diene terpolymer is less than 1 part by weight, the effect of improving low-temperature impact resistance will be small;
If it exceeds 5 parts by weight, the strength of the melt becomes poor and the thermoformability deteriorates.
造核剤は本発明のポリプロピレン組成物において、エチ
レン・酢酸ビニル共重合体やエチレン・プロピレン共重
合体およびエチレン・プロピレン・ジエン三元共重合体
の各配合量の増大にともない成形品の剛性や透明度が低
下する際、その添加によりこれらの低下を防止する効果
を有している。In the polypropylene composition of the present invention, the nucleating agent improves the rigidity of the molded article as the amount of the ethylene/vinyl acetate copolymer, ethylene/propylene copolymer, and ethylene/propylene/diene terpolymer increases. When transparency decreases, its addition has the effect of preventing this decrease.
なお、透明度と震度は数値上相反する関係にあることを
付言しておく。It should be noted that transparency and seismic intensity are numerically contradictory.
造核剤としては、カルボン酸、ジカルボン酸およびこれ
らの無水物や塩類、芳香族スルホン酸の塩類もしくはエ
ステル類、芳香族ホスフィン酸類、芳香族ホスホン酸類
等のほか、メルク等の無機塩類が好ましい。Preferred examples of the nucleating agent include carboxylic acids, dicarboxylic acids, anhydrides and salts thereof, salts or esters of aromatic sulfonic acids, aromatic phosphinic acids, aromatic phosphonic acids, and inorganic salts such as Merck.
本発明によるポリプロピレン組成物は各配合成分をトラ
イブレンドするか、あるいは熱ロールやバンバリーミキ
サ−１押出機、コニーダー等を用い溶融混練して得るこ
とができる。The polypropylene composition according to the present invention can be obtained by tri-blending the respective ingredients or by melt-kneading them using a hot roll, a Banbury mixer 1 extruder, a co-kneader, or the like.
本発明のポリプロピレン組成物はポリプロピレンのもつ
優れた透明性や剛性を維持しつつ、低温耐衝撃性や熱成
形性を著しく改善したもので、それにともない、本組成
物を成形品原料に用いた場合、生産面では成形サイクル
の短縮化、すなわち生産性の著しい向上が実現され、成
形品の使用面では可用温度範囲が拡大するという利点を
有している。The polypropylene composition of the present invention has significantly improved low-temperature impact resistance and thermoformability while maintaining the excellent transparency and rigidity of polypropylene. In terms of production, the molding cycle is shortened, that is, the productivity is significantly improved, and in terms of the use of molded products, the usable temperature range is expanded.
本発明の組成物による成形品は、低温環境で用いられる
包装資材や、さらに同環境下で耐衝撃性が要求される容
器等として好適である。Molded articles made from the composition of the present invention are suitable as packaging materials used in low-temperature environments, and containers that require impact resistance in the same environments.
つぎに本発明を実施例によりさらに具体的に説明する。Next, the present invention will be explained in more detail with reference to Examples.
実施例 １〜１０
ポリプロピレン組成物の各成分として、結晶性ポリプロ
ピレンはメルトインデックス０．６？／１０ 分、密度
０．９ ？／ｃ４、エチレン・酢酸ビニル共重合体は、
酢酸ビニル成分含量３．５重量％、メルトインデックス
０．４？／１０分、溶融体強度 ＊に１５．０Ｐ、エチ
レン・プロピレン共重合体はプロピレン成分含量２８重
量％、ムーニー粘度１００℃
（ＭＬ １ ＋４ ） ７０、エチレン・プロピレン
・ジエン三元共重合体はプロピレン成分含量２８重ｉ％
、ムーニー粘度（ＭＬＨ２′Ｇ） ９０、造核剤はｐ
−ｔ−ブチル安息香酸アルミニウムを用い、第１表に示
す各成分比からなる組成物を押出成形して厚さ０．５ｍ
ｍのシートを作成し、これを用いて各物性を測定し結果
を同表中に示す。Examples 1 to 10 As each component of the polypropylene composition, crystalline polypropylene has a melt index of 0.6? /10 minutes, density 0.9? /c4, ethylene/vinyl acetate copolymer is
Vinyl acetate content 3.5% by weight, melt index 0.4? /10 minutes, melt strength *15.0P, ethylene-propylene copolymer has a propylene content of 28% by weight, Mooney viscosity 100°C (ML 1 +4) 70, ethylene-propylene-diene terpolymer has propylene Ingredient content: 28wt%
, Mooney viscosity (MLH2'G) 90, nucleating agent is p
-Using aluminum t-butylbenzoate, a composition consisting of the component ratios shown in Table 1 was extruded to a thickness of 0.5 m.
A sheet of m was prepared, and each physical property was measured using this sheet, and the results are shown in the table.
各物性のうち、実用試験は低温での耐衝撃試験であり、
そのため、当該シートから熱成形によりプリンカップ状
のものをつくり、この中に合成樹脂の球状ペレットを入
れ、当該シートでふたをして中味がこぼれおちないよう
にして、全重量を１００１となるようにし、これらを−
２０℃で２４時間放置後、底面落下により破壊に要した
エネルギー値を示し、剛性はＡＳＴＭ−Ｄ７４７、震度
はＡＳＴＭ−１）１００３にそれぞれしたがって測定し
た値である。Among each physical property, the practical test is an impact resistance test at low temperature.
Therefore, we made a pudding cup shape from the sheet by thermoforming, put spherical synthetic resin pellets in it, and covered it with the sheet to prevent the contents from spilling, so that the total weight would be 1001. and set these to −
The value of energy required for destruction due to falling from the bottom after being left at 20° C. for 24 hours is shown, and the rigidity is the value measured according to ASTM-D747, and the seismic intensity is the value measured according to ASTM-1) 1003.
また、熱成形性はＡＳＴＭ−ＤＩ ２３８−５７Ｔに準
拠した条件により溶融体強度を測定し、その値から経験
的に判定したもので、○印は良好品が得られ易く、◎印
は前者よりも一層すぐれ、かつ成形サイクルが短縮でき
ることをそれぞれ表わす。In addition, thermoformability is determined empirically by measuring the strength of the melt under conditions based on ASTM-DI 238-57T, and ○ indicates that a good product is easily obtained, and ◎ indicates that the former is better. This means that the molding cycle is even better and the molding cycle can be shortened.
なお、本発明のポリプロピレン組成物に類似する範囲の
ものについては比較例として第２表に示し、本発明によ
る効果を明確にした。Incidentally, polypropylene compositions similar to the polypropylene composition of the present invention are shown in Table 2 as comparative examples to clarify the effects of the present invention.
Claims (1)
−酢酸ビニル共重合体２〜３０重量部、エチレン・プロ
ピレン共重合体および／またはエチレン・プロピレン・
ジエン三元共重合体１〜１５重量部および造核剤０〜２
重量部からなる組成物。1 70 to 98 parts by weight of crystalline polypropylene, 2 to 30 parts by weight of ethylene-vinyl acetate copolymer, ethylene-propylene copolymer and/or ethylene-propylene copolymer
1 to 15 parts by weight of diene terpolymer and 0 to 2 parts by weight of nucleating agent
A composition consisting of parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14495878A JPS5846141B2 (en) | 1978-11-25 | 1978-11-25 | polypropylene composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14495878A JPS5846141B2 (en) | 1978-11-25 | 1978-11-25 | polypropylene composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5571736A JPS5571736A (en) | 1980-05-30 |
| JPS5846141B2 true JPS5846141B2 (en) | 1983-10-14 |
Family
ID=15374141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14495878A Expired JPS5846141B2 (en) | 1978-11-25 | 1978-11-25 | polypropylene composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5846141B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11322939B1 (en) | 2020-08-12 | 2022-05-03 | Royal Power Energy Inc. | Power quality improvement system with automatic power factor correction and harmonic filtering |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57195134A (en) * | 1981-05-27 | 1982-11-30 | Sumitomo Chem Co Ltd | Resin composition containing inorganic filler |
| FR2508468B1 (en) * | 1981-06-29 | 1985-10-18 | Nortene Sa | NEW COMPOSITION OF PLASTIC MATERIAL, NET MADE OF THIS PLASTIC MATERIAL AND USE OF THIS NET IN PACKAGING OF LOADS ON PALLET |
| JPS59182832A (en) * | 1983-04-01 | 1984-10-17 | Idemitsu Petrochem Co Ltd | Polyolefinic resin composition |
| ATE489423T1 (en) * | 2003-07-30 | 2010-12-15 | Polyone Corp | COMPOSITION CONTAINING NUCLATED THERMOPLASTIC ELASTOMER AND ASSOCIATED METHODS |
-
1978
- 1978-11-25 JP JP14495878A patent/JPS5846141B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11322939B1 (en) | 2020-08-12 | 2022-05-03 | Royal Power Energy Inc. | Power quality improvement system with automatic power factor correction and harmonic filtering |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5571736A (en) | 1980-05-30 |
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