JPH06248133A - Polypropylene composition and its production - Google Patents
Polypropylene composition and its productionInfo
- Publication number
- JPH06248133A JPH06248133A JP3519693A JP3519693A JPH06248133A JP H06248133 A JPH06248133 A JP H06248133A JP 3519693 A JP3519693 A JP 3519693A JP 3519693 A JP3519693 A JP 3519693A JP H06248133 A JPH06248133 A JP H06248133A
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- Prior art keywords
- polypropylene
- weight
- measured
- molecular weight
- nmr
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Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はポリプロピレン組成物お
よびその製造方法に関する。詳しくはポリプロピレンに
特定の低分子量ポリプロピレンをブレンドしてなること
を特徴とするポリプロピレン組成物に関する。FIELD OF THE INVENTION The present invention relates to a polypropylene composition and a method for producing the same. More specifically, the present invention relates to a polypropylene composition characterized by comprising a specific low molecular weight polypropylene blended with polypropylene.
【０００２】[0002]
【従来技術】ポリプロピレンは成形加工性が容易であ
り、物性のバランスが比較的良く、優れた電気的、機械
的、化学的性質を有し、また安価に入手することが出来
るため各種の材料としてさまざまな分野に非常によく利
用されている。2. Description of the Related Art Polypropylene is easy to mold, has a relatively good balance of physical properties, has excellent electrical, mechanical and chemical properties, and can be obtained at low cost, so it is used as various materials. Very well used in various fields.
【０００３】特に最近では、触媒の高性能化、重合技術
の進歩、結晶化核剤等の添加効果の向上等により、剛
性、耐熱変形性、表面の硬さ等の物性がさらに優れたも
のとして研究改良が行われている。Particularly, in recent years, the physical properties such as rigidity, heat distortion resistance, and surface hardness have been further improved by improving the performance of catalysts, progress of polymerization technology, and improvement of addition effect of crystallization nucleating agent. Research and improvements are being made.
【０００４】一般にポリプロピレンの物性を改良するた
めに分子量分布を変えたり、異なった物性を有するポリ
プロピレン同志を混合する方法が通常行われている。In general, in order to improve the physical properties of polypropylene, a method of changing the molecular weight distribution or mixing polypropylenes having different physical properties is usually practiced.
【０００５】[0005]
【発明が解決しようとする課題】非常に高分子量のポリ
プロピレンや低分子量のポリプロピレンは、通常工業的
に生産されているが、従来のものは立体規則性が低いも
のであった。さらに、通常のポリプロピレンに少量の高
分子量のポリプロピレンを混合すると物性が低下した
り、フィルムなどにしたときにはブツが生じて外観も悪
くなるなどの問題があった。これは同じポリプロピレン
同志でも分子量の差が大きいため高分子量のポリプロピ
レンが均一に分散されないためであると考えられてい
る。Although very high molecular weight polypropylene and low molecular weight polypropylene are usually industrially produced, conventional ones have low stereoregularity. Further, when a small amount of high-molecular-weight polypropylene is mixed with ordinary polypropylene, the physical properties are deteriorated, and when it is formed into a film or the like, there are problems such as the appearance of bad spots and the appearance. It is considered that this is because even if the same polypropylenes are used, the difference in the molecular weight is large, and therefore the high-molecular weight polypropylene is not uniformly dispersed.
【０００６】一方、高分子量のポリプロピレンに少量の
低分子量のポリプロピレンを混合した場合には、ブツが
生じて外観が悪くなるなどの問題はないが、高分子量の
ポリプロピレンを混合した時のように混合した低分子量
のポリプロピレンが均一に分散されない場合には低分子
量のポリプロピレンの性質が全体の組成物の物性に影響
を与えることが予想される。On the other hand, when a small amount of low-molecular-weight polypropylene is mixed with a high-molecular-weight polypropylene, there is no problem such as lumps and deterioration in appearance, but mixing as in the case of mixing high-molecular-weight polypropylene It is expected that the properties of the low molecular weight polypropylene will affect the physical properties of the overall composition if the low molecular weight polypropylene is not evenly dispersed.
【０００７】しかしながら、従来高分子量のポリプロピ
レンに少量の低分子量のポリプロピレンを混合した場合
には、上記した如くフィルムなどにしたときにはブツが
生じて外観が悪くなるようなことはないが、低分子量の
ポリプロピレンを入れた分だけ物性が低下する。これは
従来使用されてきた低分子量ポリプロピレンが分子量と
して小さいだけで、立体規則性が低いものであったため
である。ところが、立体規則性の高い低分子量のポリプ
ロピレンは剛性、耐熱変形性、表面の硬さ、結晶性等の
物性が優れたものとして期待できるので、これらのポリ
プロピレンを通常のポリプロピレンに混合することによ
り物性の向上が期待できる。However, when a small amount of low-molecular-weight polypropylene is mixed with a conventional high-molecular-weight polypropylene, the appearance of the film or the like will not be deteriorated and the appearance will not be deteriorated as described above. The physical properties are reduced by the amount of polypropylene added. This is because the low molecular weight polypropylene used conventionally has only a small molecular weight and has low stereoregularity. However, low molecular weight polypropylene having high stereoregularity can be expected to have excellent physical properties such as rigidity, heat distortion resistance, surface hardness, and crystallinity, and therefore, by mixing these polypropylenes with ordinary polypropylene, physical properties can be improved. Can be expected to improve.
【０００８】[0008]
【課題を解決するための手段】本発明者らは通常工業的
に用いられているポリプロピレンに特定の低分子量ポリ
プロピレンをブレンドすることにより物性が低下せず、
むしろ物性が向上することを見いだして本発明を完成さ
せた。すなわち本発明は、１３５℃のテトラリン中で測
定した極限粘度数（以下、〔η〕と記す。）が1.0 以上
で、沸騰ｎ−ヘプタンに不溶部のＣ13ＮＭＲで測定した
ｍｍｍｍペンタッド分率が0.90以上である高分子量のポ
リプロピレン90〜99.9重量部と、〔η〕が0.1 〜0.8 で
Ｃ13ＮＭＲで測定したｍｍｍｍペンタッド分率が0.93以
上である低分子量の高立体規則性ポリプロピレン0.1 〜
10重量部よりなるポリプロピレン組成物であり、また本
発明は、上記の高分子量のポリプロピレン90〜99.9重量
部と低分子量の高立体規則性ポリプロピレン0.1 〜10重
量部とを溶融混合することを特徴とするポリプロピレン
組成物の製造方法である。Means for Solving the Problems The present inventors have not deteriorated the physical properties by blending a specific low molecular weight polypropylene with polypropylene which is usually used industrially,
Rather, they found that the physical properties were improved and completed the present invention. That is, the present invention has an intrinsic viscosity number (hereinafter referred to as [η]) of 1.0 or more measured in tetralin at 135 ° C., and a mmmm pentad fraction measured by C 13 NMR of a portion insoluble in boiling n-heptane. and polypropylene 90 to 99.9 parts by weight of high molecular weight is not less than 0.90, [η] is 0.1 to 0.8 in C 13 mmmm pentad fraction as measured by NMR is a low molecular weight of the high stereoregular polypropylene 0.1 which is 0.93 or more
The present invention is a polypropylene composition consisting of 10 parts by weight, and the present invention is characterized in that 90 to 99.9 parts by weight of the high molecular weight polypropylene and 0.1 to 10 parts by weight of a low molecular weight highly stereoregular polypropylene are melt mixed. Is a method for producing a polypropylene composition.
【０００９】本発明で用いられる高分子量のポリプロピ
レンとは、プロピレンのホモポリマー或いは20wt％以下
のエチレンやブテン等のコモノマーを含むポリプロピレ
ン共重合体であって、しかも〔η〕が1.0 以上で沸騰ｎ
−ヘプタンに不溶部の割合が80％以上あるものが好まし
く、さらに該沸騰ｎ−ヘプタンに不溶部のＣ13ＮＭＲで
測定したｍｍｍｍペンタッド分率が0.90以上であること
が重要であり、特に沸騰ｎ−ヘプタンに不溶部のｍｍｍ
ｍペンタッド分率が0.90よりも小さい場合にはあまり効
果がない。ここで沸騰ｎ−ヘプタンに不溶部とは、熊川
式抽出器を用いてポリプロピレン６ｇを沸騰ｎ−ヘプタ
ンで６時間抽出した後の抽出残分を示す。The high-molecular-weight polypropylene used in the present invention is a homopolymer of propylene or a polypropylene copolymer containing 20 wt% or less of a comonomer such as ethylene or butene, and [boiling] n is 1.0 or more.
It is preferable that the proportion of the insoluble portion in heptane is 80% or more, and it is important that the mmmm pentad fraction measured by C 13 NMR of the portion insoluble in the boiling n-heptane is 0.90 or more, and especially the boiling n -Mmmm insoluble in heptane
If the m-pentad fraction is less than 0.90, it has little effect. Here, the insoluble portion in boiling n-heptane means an extraction residue after 6 g of polypropylene was extracted with boiling n-heptane for 6 hours using a Kumagawa type extractor.
【００１０】このような高分子量のポリプロピレンは、
工業的にポリオレフィンを製造する方法で得られ、その
重合方法は溶媒重合法あるいは実質的に溶媒の存在しな
い塊状重合法、気相重合法などの従来の方法が利用で
き、その重合に用いる触媒は、例えば三塩化チタン触媒
あるいはマグネシウム化合物に三塩化チタンや四塩化チ
タンなどのチタン化合物を担持した触媒成分にアルキル
アルミニウムを助触媒成分とする担体触媒等が用いられ
る。さらにジシクロペンタジエニルジルコニウムジクロ
リドとアルミノキサンの組み合わせで代表されるような
シクロペンタジエニル化合物を配位子とする周期律表第
３族、第４族の金属錯体とアルミノキサン化合物よりな
る触媒、あるいはシクロペンタジエニル化合物を配位子
とする周期律表第３族、第４族の金属カチオン錯体を触
媒として用いる均一系の触媒も利用できる。Such high molecular weight polypropylene is
Obtained by a method for industrially producing a polyolefin, the polymerization method can be a conventional method such as a solvent polymerization method or a substantially solvent-free bulk polymerization method, a gas phase polymerization method, and the catalyst used for the polymerization is For example, a titanium trichloride catalyst or a carrier catalyst having an alkylaluminum as a cocatalyst component is used as a catalyst component in which a titanium compound such as titanium trichloride or titanium tetrachloride is supported on a magnesium compound. Furthermore, a catalyst comprising a metal complex of a group 3 or 4 of the periodic table having a cyclopentadienyl compound represented by a combination of dicyclopentadienyl zirconium dichloride and aluminoxane as a ligand, and an aluminoxane compound, or A homogeneous catalyst using a metal cation complex of Groups 3 and 4 of the Periodic Table having a cyclopentadienyl compound as a ligand can also be used.
【００１１】本発明で用いられる低分子量のポリプロピ
レンとは、〔η〕が0.1 〜0.8 で、Ｃ13ＮＭＲで測定し
たｍｍｍｍペンタッド分率が0.93以上である低分子量の
高立体規則性ポリプロピレンである。これら低分子量の
ポリプロピレンの製造方法は、上記高分子量のポリプロ
ピレンを製造するものと同じ触媒、同じ重合法で得ら
れ、重合時の条件を変えることで製造することができ
る。また、〔η〕が0.8 以上のポリプロピレンを熱減性
等のモルフォロジーコントロールを行って〔η〕が0.1
〜0.8 、Ｃ13ＮＭＲで測定したｍｍｍｍペンタッド分率
が0.93以上となるようにしたものも使用される。The low-molecular-weight polypropylene used in the present invention is a low-molecular-weight highly stereoregular polypropylene having a [η] of 0.1 to 0.8 and a mmmm pentad fraction measured by C 13 NMR of 0.93 or more. These low molecular weight polypropylenes can be produced by the same catalyst and the same polymerization method as those used for producing the above high molecular weight polypropylene, and can be produced by changing the conditions at the time of polymerization. In addition, polypropylene having an [η] of 0.8 or more is subjected to morphology control such as heat loss, and [η] is 0.1
To 0.8, mmmm pentad fraction measured by C 13 NMR is also used which was set to be 0.93 or more.
【００１２】これらの低分子量のポリプロピレンを上記
高分子量のポリプロピレンと溶融混合することで、本発
明のポリプロピレン組成物が得られる。この溶融混合す
る方法としては、通常行われているポリプロピレン中に
添加物を溶融添加する様な方法でよく、例えば、ヘンシ
ェルミキサー等で予め混合したのちに押出機中に入れて
溶融混練する方法などが挙げられる。この溶融混練時に
充分均一に混合し過ぎるとあまり効果が上がらない場合
があるので、できるだけ溶融剪断力をかけないように混
合することが好ましいが、通常行われている成形条件で
は問題はない。本発明の樹脂組成物を用いて成形体を成
形するときには、通常のポリプロピレンに使用される種
々の安定剤を添加して用いることができる。The polypropylene composition of the present invention can be obtained by melt-mixing these low molecular weight polypropylenes with the above high molecular weight polypropylenes. The melt-mixing method may be a method in which additives are melt-added into polypropylene which is usually performed, and for example, a method of pre-mixing with a Henschel mixer or the like and then melt-kneading in an extruder. Is mentioned. Since the effect may not be improved if the mixture is sufficiently uniformly mixed during the melt-kneading, it is preferable to mix the mixture so that the melt shearing force is not applied as much as possible, but there is no problem under the molding conditions generally used. When a molded product is molded using the resin composition of the present invention, various stabilizers used for ordinary polypropylene can be added and used.
【００１３】[0013]
【実施例】以下に実施例を示しさらに本発明を説明す
る。EXAMPLES The present invention will be further described with reference to the following examples.
【００１４】実施例１ ソルベー社製、三塩化チタンを用いてヘプタン溶媒中で
６０℃で重合して得られたポリプロピレン（〔η〕が1.
6 、沸騰ｎ−ヘプタンに不溶部のＣ13ＮＭＲで測定した
ｍｍｍｍペンタッド分率が0.98）にジメチルシリルビス
（2,5-ジメチルシクロペンタジエニル）ジルコニウムジ
クロライドとメチルアルミノキサンを触媒としてトルエ
ン中で重合して得られた低分子量のポリプロピレン
（〔η〕が0.35、Ｃ13ＮＭＲで測定したｍｍｍｍペンタ
ッド分率が0.98）が５重量％になるように添加してヘン
シェルミキサーで混合した後、二軸混練機（神戸製鋼
（株）社製）を用い２３０℃の温度で滞留時間約４分間
の条件で溶融混練し、ペレット化した。このペレットを
射出成形機（東芝（株）社製ＩＳ−９０）にて試験片を
作成して物性を評価した。Example 1 Polypropylene ([η] of 1. manufactured by Solvay Co., Ltd., obtained by polymerizing titanium trichloride at 60 ° C. in a heptane solvent.
6, polymerized in toluene C 13 mmmm pentad fraction as measured by NMR is 0.98) dimethyl silyl bis (2,5-dimethyl-cyclopentadienyl) zirconium dichloride and methylaluminoxane of insoluble portion in boiling n- heptane as a catalyst The low molecular weight polypropylene ([η] of 0.35, mmmm pentad fraction measured by C 13 NMR of 0.98) obtained by adding was added so as to be 5% by weight, and mixed with a Henschel mixer, and then biaxially kneaded. Using a machine (Kobe Steel Co., Ltd.), the mixture was melt-kneaded at a temperature of 230 ° C. under a condition of a residence time of about 4 minutes, and pelletized. Test pieces were prepared from the pellets using an injection molding machine (IS-90 manufactured by Toshiba Corporation), and physical properties were evaluated.
【００１５】試験片の一部を用いて４００Ｋで等温結晶
化解析をおこなって結晶化速度に対応する数値ｔ1/2 を
求めたところ150 秒であり、また曲げ弾性は19000(kg/c
m2)であった。Isothermal crystallization analysis was carried out at 400 K using a part of the test piece, and the value t 1/2 corresponding to the crystallization rate was calculated to be 150 seconds, and the bending elasticity was 19000 (kg / c).
m 2 ).
【００１６】比較例１ 実施例１に於いて低分子量ポリプロピレンを添加せずに
試験片を作成して物性を評価した。ｔ1/2 を求めたとこ
ろ216 秒と遅く、また曲げ弾性は17000(kg/cm2) であっ
た。Comparative Example 1 A test piece was prepared in the same manner as in Example 1 except that the low molecular weight polypropylene was not added, and the physical properties were evaluated. When t 1/2 was determined, it was slow at 216 seconds, and the flexural elasticity was 17,000 (kg / cm 2 ).
【００１７】比較例２ 実施例１で用いた触媒を用いて水素を過剰に用いて低分
子量のポリプロピレン（一部サンプリングして測定した
〔η〕が0.7 、Ｃ13ＮＭＲで測定したｍｍｍｍペンタッ
ド分率が0.94）を合成し、ついで水素を減らして通常の
重合を行ってポリプロピレン（〔η〕が1.4 、沸騰ｎ−
ヘプタンに不溶部のＣ13ＮＭＲで測定したｍｍｍｍペン
タッド分率が0.97）を得た（この二段重合をそれぞれ同
一条件化で別々に重合して確認したところ、ポリプロピ
レン中に含まれる低分子量ポリプロピレンの割合は７重
量％であった。）。Comparative Example 2 Low molecular weight polypropylene using the catalyst used in Example 1 in excess of hydrogen ([η] of 0.7 measured by sampling a part, mmmm pentad fraction measured by C 13 NMR) 0.94) was synthesized, and then hydrogen was reduced to carry out ordinary polymerization to obtain polypropylene ([η] 1.4, boiling n-
A mmmm pentad fraction measured by C 13 NMR of a part insoluble in heptane was obtained (this two-stage polymerization was confirmed by separately polymerizing under the same conditions, and it was confirmed that the low molecular weight polypropylene contained in polypropylene was The ratio was 7% by weight.).
【００１８】このポリプロピレンを実施例１と同様にペ
レット化し、射出成形して試験片の一部を用いて物性を
評価したところ、結晶化速度に対応する数値ｔ1/2 は22
0 秒であり、また曲げ弾性は16000(kg/cm2) であった。This polypropylene was pelletized in the same manner as in Example 1, injection-molded, and a part of the test piece was used to evaluate the physical properties. The numerical value t 1/2 corresponding to the crystallization rate was 22.
It was 0 second, and the flexural elasticity was 16000 (kg / cm 2 ).
【００１９】実施例２ ポリプロピレンブロック共重合体（三井東圧化学 (株)
社製、〔η〕が1.3 、沸騰ｎ−ヘプタンに不溶部が93％
であり、そのＣ13ＮＭＲで測定したｍｍｍｍペンタッド
分率が0.95）を用いて、実施例１で用いた低分子量ポリ
プロピレンが５重量％になるように添加した他は実施例
１と同様にしたところ、２３℃及び−１０℃でのアイゾ
ットがそれぞれ9.3(kg/cm2) 、5.0 (kg/cm2)であり、曲
げ強さは348(kg/cm2) 、曲げ弾性は11800(kg/cm2) であ
った。Example 2 Polypropylene block copolymer (Mitsui Toatsu Chemicals, Inc.)
Manufactured by the company, [η] is 1.3, 93% insoluble part in boiling n-heptane
The same procedure as in Example 1 was carried out except that the mmmm pentad fraction measured by C 13 NMR was 0.95) and the low molecular weight polypropylene used in Example 1 was added so as to be 5% by weight. , Izod at 23 ℃ and -10 ℃ is 9.3 (kg / cm 2 ), 5.0 (kg / cm 2 ), flexural strength is 348 (kg / cm 2 ), flexural elasticity is 11800 (kg / cm 2 ). 2 ) was.
【００２０】比較例３ 低分子量のポリプロピレンを添加しなかった他は実施例
２と同様にしたところ、２３℃及び−１０℃でのアイゾ
ットがそれぞれ9.3(kg/cm2) 、5.1 (kg/cm2)であり、曲
げ強さは321(kg/cm2) 、曲げ弾性は10400(kg/cm2) であ
った。Comparative Example 3 The procedure of Example 2 was repeated except that low molecular weight polypropylene was not added, and the Izods at 23 ° C. and −10 ° C. were 9.3 (kg / cm 2 ), 5.1 (kg / cm 2 ), respectively. 2 ), the bending strength was 321 (kg / cm 2 ), and the bending elasticity was 10400 (kg / cm 2 ).
【００２１】[0021]
【発明の効果】本発明のポリプロピレン樹脂組成物は容
易に製造することができ、成形加工性に富、剛性と耐衝
撃性の物性バランスに優れた物が得られ、工業的に極め
て価値がある。EFFECT OF THE INVENTION The polypropylene resin composition of the present invention can be easily produced, is excellent in molding processability, and has an excellent balance of physical properties of rigidity and impact resistance, and is industrially extremely valuable. .
Claims (2)
度数（以下、〔η〕と記す。）が1.0 以上で、沸騰ｎ−
ヘプタンに不溶部のＣ13ＮＭＲで測定したｍｍｍｍペン
タッド分率が0.90以上である高分子量のポリプロピレン
90〜99.9重量部と、〔η〕が0.1 〜0.8 でＣ13ＮＭＲで
測定したｍｍｍｍペンタッド分率が0.93以上である低分
子量の高立体規則性ポリプロピレン0.1 〜10重量部より
なるポリプロピレン組成物。1. An intrinsic viscosity number (hereinafter referred to as [η]) measured in tetralin at 135 ° C. of 1.0 or more and boiling n-
High-molecular-weight polypropylene having a mmmm pentad fraction of 0.90 or more measured by C 13 NMR of a portion insoluble in heptane
A polypropylene composition comprising 90 to 99.9 parts by weight and 0.1 to 10 parts by weight of a low molecular weight highly stereoregular polypropylene having an [η] of 0.1 to 0.8 and a mmmm pentad fraction measured by C 13 NMR of 0.93 or more.
不溶部のＣ13ＮＭＲで測定したｍｍｍｍペンタッド分率
が0.90以上である高分子量のポリプロピレン90〜99.9重
量部に、〔η〕が0.1 〜0.8 でＣ13ＮＭＲで測定したｍ
ｍｍｍペンタッド分率が0.93以上である低分子量の高立
体規則性ポリプロピレン0.1 〜10重量部を溶融混合する
ことを特徴とするポリプロピレン組成物の製造方法。2. [η] to 90 to 99.9 parts by weight of a high molecular weight polypropylene having a mmmm pentad fraction of 0.90 or more as measured by C 13 NMR of a portion insoluble in boiling n-heptane when [η] is 1.0 or more, Is 0.1 to 0.8 and m measured by C 13 NMR.
A method for producing a polypropylene composition, which comprises melt-mixing 0.1 to 10 parts by weight of a low molecular weight highly stereoregular polypropylene having a mmm pentad fraction of 0.93 or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03519693A JP3330413B2 (en) | 1993-02-24 | 1993-02-24 | Polypropylene composition and method for producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03519693A JP3330413B2 (en) | 1993-02-24 | 1993-02-24 | Polypropylene composition and method for producing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06248133A true JPH06248133A (en) | 1994-09-06 |
| JP3330413B2 JP3330413B2 (en) | 2002-09-30 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03519693A Expired - Fee Related JP3330413B2 (en) | 1993-02-24 | 1993-02-24 | Polypropylene composition and method for producing the same |
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| JP (1) | JP3330413B2 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000058398A1 (en) * | 1999-03-26 | 2000-10-05 | Idemitsu Petrochemical Co., Ltd. | Propylene resin composition and process for producing the same |
| SG93930A1 (en) * | 2001-03-22 | 2003-01-21 | Sumitomo Chemical Co | Polypropylene-based resin composition for stretched film, process for producing the same and stretched film |
| US6639018B2 (en) | 2001-02-27 | 2003-10-28 | Sumitomo Chemical Company, Limited | Polypropylene resin composition and process for producing the same |
| JP2009235228A (en) * | 2008-03-27 | 2009-10-15 | Tohcello Co Ltd | Oriented film made of polypropylene |
| WO2016017753A1 (en) * | 2014-07-31 | 2016-02-04 | 三井化学株式会社 | Propylene homopolymer composition for capacitor film, method for producing same, and capacitor film |
| WO2016017752A1 (en) * | 2014-07-31 | 2016-02-04 | 三井化学株式会社 | Propylene homopolymer composition for capacitor film, method for producing same, and capacitor film |
-
1993
- 1993-02-24 JP JP03519693A patent/JP3330413B2/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000058398A1 (en) * | 1999-03-26 | 2000-10-05 | Idemitsu Petrochemical Co., Ltd. | Propylene resin composition and process for producing the same |
| US6639018B2 (en) | 2001-02-27 | 2003-10-28 | Sumitomo Chemical Company, Limited | Polypropylene resin composition and process for producing the same |
| SG93930A1 (en) * | 2001-03-22 | 2003-01-21 | Sumitomo Chemical Co | Polypropylene-based resin composition for stretched film, process for producing the same and stretched film |
| US6699574B2 (en) | 2001-03-22 | 2004-03-02 | Sumitomo Chemical Company, Limited | Polypropylene-based resin composition for stretched film, process for producing the same and stretched film |
| JP2009235228A (en) * | 2008-03-27 | 2009-10-15 | Tohcello Co Ltd | Oriented film made of polypropylene |
| WO2016017753A1 (en) * | 2014-07-31 | 2016-02-04 | 三井化学株式会社 | Propylene homopolymer composition for capacitor film, method for producing same, and capacitor film |
| WO2016017752A1 (en) * | 2014-07-31 | 2016-02-04 | 三井化学株式会社 | Propylene homopolymer composition for capacitor film, method for producing same, and capacitor film |
| JPWO2016017753A1 (en) * | 2014-07-31 | 2017-06-01 | 三井化学株式会社 | Propylene homopolymer composition for capacitor film, method for producing the same, and capacitor film |
| JPWO2016017752A1 (en) * | 2014-07-31 | 2017-06-01 | 三井化学株式会社 | Propylene homopolymer composition for capacitor film, method for producing the same, and capacitor film |
| US10793708B2 (en) | 2014-07-31 | 2020-10-06 | Mitsui Chemicals, Inc. | Propylene homopolymer composition for capacitor film, method for producing the same, and capacitor film |
| US10800909B2 (en) | 2014-07-31 | 2020-10-13 | Mitsui Chemicals, Inc. | Propylene homopolymer composition for capacitor film, method for producing the same, and capacitor film |
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| Publication number | Publication date |
|---|---|
| JP3330413B2 (en) | 2002-09-30 |
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