JPH03217442A - Highly crystalline polypropylene resin composition - Google Patents

Highly crystalline polypropylene resin composition

Info

Publication number
JPH03217442A
JPH03217442A JP1242190A JP1242190A JPH03217442A JP H03217442 A JPH03217442 A JP H03217442A JP 1242190 A JP1242190 A JP 1242190A JP 1242190 A JP1242190 A JP 1242190A JP H03217442 A JPH03217442 A JP H03217442A
Authority
JP
Japan
Prior art keywords
crystalline polypropylene
polypropylene
methylpentene
highly crystalline
syndiotactic
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
Application number
JP1242190A
Other languages
Japanese (ja)
Other versions
JP2828716B2 (en
Inventor
Tadashi Asanuma
正 浅沼
Hiroshi Matsuzawa
宏 松澤
Yukari Tamai
玉井 由香里
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP1242190A priority Critical patent/JP2828716B2/en
Publication of JPH03217442A publication Critical patent/JPH03217442A/en
Application granted granted Critical
Publication of JP2828716B2 publication Critical patent/JP2828716B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE:To obtain the subject composition having extremely excellent physical properties and high industrial value by compounding syndiotactic poly-4- methylpentene-1 to a base resin. CONSTITUTION:The objective composition can be produced by mixing (A) 0.0001-10 pts.wt. of syndiotactic poly-4-methylpentene-1 with (B) 99.9999-90 pts.wt. of a highly crystalline polypropylene. The component A to be used in the present process has a melting point of >=160 deg.C and is produced by using a catalyst system composed of an aluminoxane and a transition metal compound such as isopropyl(cyclopentadienyl-1-fluorenyl)hafnium dichloride.

Description

【発明の詳細な説明】 〔産業上の利用分野] 本発明は、物性の良好な結晶性のボリブロビレンの組成
物に関する.詳しくは高結晶性のアイソタクチノク構造
あるいはシンジオタクナソク構造を有するポリプUピレ
ンあるいはその(IL合物の組成物に関する. 〔従来技術〕 結晶性ボリプ!ノビレンとしては従来よりアイソタクチ
ック構造のものが知られており、また非対称な配位rを
有する遷移金属触媒を川いることでシンジオタクティシ
ティーの高い結晶性のシンジオタクチックポリプロピレ
ンが製造できることが見出された。これらの高タクティ
シティーな構造を有するポリプロピレンは、結晶PLで
はあるが結晶化度が低く本来の特性を表しているとは8
゛い難く、特にアイソククチックボリ1し1ピレンにつ
いては従来より多くの結晶化核剤について検討がなされ
ている. (発明が解決しようとする課題〕 結晶化核剤としては通常安息香酸の塩、ペンズソルビト
ール系の化合物など低分子量の有機化合物が利用されて
いるが、これらの化合物は核剤としての性能が充分では
なく多量に用いる必要があり、そのため成形物からプリ
ードしてくるなどの問題がある.これに対しては結晶性
のポリビニルシクロヘキサンなどの高分子核剤が知られ
ているが、高価である上にシンジオタクチック構造のボ
リプロピl/ンに対してはその効果が充分ではないなど
の問題があった. 〔課題を解決するための手段〕 本発明者らは上記問題を解決して物性の良好な高結晶性
のボリブロビレンの組成物につい゜ζ鋭意探索し本発明
を完成した。
DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a composition of crystalline polypropylene with good physical properties. In detail, it relates to the composition of polypropylene having a highly crystalline isotactic structure or syndiotactic structure or its (IL compound). It was also discovered that crystalline syndiotactic polypropylene with high syndiotacticity can be produced by using a transition metal catalyst with an asymmetric coordination. Although the polypropylene it has is a crystalline PL, it has a low crystallinity and exhibits its original characteristics.
This is difficult to say, and many studies have been conducted on crystallization nucleating agents, especially for isocuctic polypyrene. (Problem to be solved by the invention) Low molecular weight organic compounds such as benzoic acid salts and penzsorbitol compounds are usually used as crystallization nucleating agents, but these compounds have sufficient performance as nucleating agents. However, it is necessary to use a large amount of nucleating agents instead of a large amount, which causes problems such as predation from the molded product. Polymer nucleating agents such as crystalline polyvinyl cyclohexane are known to solve this problem, but they are expensive and However, there was a problem that the effect was not sufficient for polypropylene having a syndiotactic structure. [Means for solving the problem] The present inventors solved the above problem and achieved good physical properties. The present invention has been completed by intensively searching for a highly crystalline polypropylene composition.

即ち、本発明は、シンジオタクチンクボリ4−メチルペ
ンテン−1を0.0001=10wL部と高結晶性ボリ
プロビレンを99.9999〜90w【部混合してなる
高結晶性ポリプロピレン樹脂組成物である.本発明にお
い゜C高結晶性ボリブロビレンとはアイソタクチンクポ
リプロピレン、シンジオククチ・冫クボリフ゜ロピレン
が挙げられ、アイソタクチンクボリプr′.1ピレンと
しては、” C−NMRで測定したメチノレ基のピーク
で′n−jlLだアイソタクチンクベンタッド分率(^
.zagballiらMacro+solecules
 vol6 G87(1973).同vol 11 9
25(1975))が0,7以上好ましくは0.8以上
のものを含むものであり、その製造方法としては種々の
方法が公知であるだけではなく市場で種々の銘柄のもの
が人手できる。
That is, the present invention is a highly crystalline polypropylene resin composition prepared by mixing 0.0001 = 10wL part of syndiotactic poly4-methylpentene-1 and 99.9999 to 90w parts of highly crystalline polypropylene. In the present invention, the highly crystalline polypropylene includes isotactic polypropylene, syndiocrystalline polypropylene, isotactic polypropylene, and isotactic polypropylene. As 1 pyrene, the peak of the methylenyl group measured by C-NMR is 'n-jlL.The isotactincubentad fraction (^
.. zagballi et al. Macro+solecules
vol6 G87 (1973). Same vol 11 9
25 (1975)) of 0.7 or more, preferably 0.8 or more, and not only are various methods known for their production, but also various brands of products are available manually on the market.

シンジオタクチックボリプロピレンとしては従来高度に
結晶性のものとしては知られていなかったが、J.A.
IiWliNらにより非対称な配位子を有する遷移金属
触媒とアルミノキサンからなる触媒によってシンジオタ
クチックペンタッド分率が0.7を越えるようなタクテ
ィシティーの良好なポリプロピレンを1}られることが
初めて発見された(J,As.Chem.soc.,1
988,110.6255−6256)  .この方法
によれば、シンジオタクチックペンタッド分率が0.7
を越えるシンジオタクチソクボリプじ1ピレンを得るこ
とができ、更に炭化水素化合物で洗浄するなどによって
0.9以上のものも製造できる.触媒が上記文献と異な
っても上述のように高度にシンジオタクチック構造のボ
リプロビレンを与えるものを利用することで製造するこ
ともできる.それらの方法で製造されたものも利川でき
、本発明においてシンジオククチンクボリプロピレンと
はシンジオタクチックペンタッド分率で0,6以上好ま
しくは0.7以上のものを含むものを示す.ここで結晶
性のポリプロピレンはプロピレンの単独重合体のみなら
ず上記タクテイシティーを示す限りlOモルχ以下程度
のエチレン、炭素数4以上のα−オレフインなどの少量
の他のオレフィンとの共重合体、あるいは始めに実質的
にプ1コピレン単独で重合し、ついでエチレンとプロピ
レンを重合して得られる所謂ブロック共重合体あるいは
結晶性ポリプロピレンにポリエチレンあるいはエチレン
−プロピレン共重合体を混合したものなどであっても実
質的に結晶性のボリプロビレンである限り利用できる。
Syndiotactic polypropylene has not been known to be highly crystalline, but J. A.
IiWliN et al. discovered for the first time that polypropylene with good tacticity, with a syndiotactic pentad fraction exceeding 0.7, can be produced using a catalyst consisting of a transition metal catalyst with an asymmetrical ligand and aluminoxane. (J, As. Chem. soc., 1
988, 110.6255-6256). According to this method, the syndiotactic pentad fraction is 0.7
It is possible to obtain syndiotactic polypyrene with a concentration exceeding 0.9. Even if the catalyst is different from that in the above literature, it can be produced by using a catalyst that gives polypropylene with a highly syndiotactic structure as described above. Products produced by these methods can also be produced. In the present invention, syndioctactic polypropylene refers to one containing a syndiotactic pentad fraction of 0.6 or more, preferably 0.7 or more. Here, crystalline polypropylene is not only a propylene homopolymer, but also a copolymer with a small amount of other olefins such as 10 mol χ or less of ethylene or α-olefin having 4 or more carbon atoms, as long as it exhibits the above-mentioned tacticity. Alternatively, a so-called block copolymer obtained by first polymerizing substantially propylene alone and then polymerizing ethylene and propylene, or a mixture of crystalline polypropylene with polyethylene or an ethylene-propylene copolymer, etc. Even polypropylene can be used as long as it is substantially crystalline.

本発明において用いる4−メチルペンテン−1のシンジ
オタクチノク構造の重合体としては、上記シンジオタク
チックボリプロピレンを製造するに用いる触媒を用いて
4−メチルペンテンーlを重合ずることによっ゛ζ製造
でき、具体的には非対称な2個の配位子を有ずる遷移金
属化合物からなる触媒を用いて重合して得ることができ
る.非対称な2個の配位子を有する遷移金属化合物から
なる触媒としては上記文献に示された触媒系が好まし《
例示でき、イソプロビル(シクロペンタジエニル−I−
フルオレニル)ハフニウムジクロリド、あるいはイソブ
ロビル(シクロペンタジエニル−1−フルオレニル)ジ
ルコニウムジクロリドなどの遷移金属化合物と、 R                    R(式中
背は炭素数1〜3の炭化水素残ハ.)で表されるアルミ
ノキサンからなる触媒系が例示できる.特にPがメチル
基であるメチルアルミノキサンでnが5以上、好ましく
は10以上のものが利用される.上記遷移金属触媒に対
するアルミノキサンの使用割合としてはlO〜tooo
oooモル倍、通常50〜5000モル倍である. 4−メヂルペンテン−1を重合する、重合条件について
は特に制限はなく不活性媒体を用いる溶媒重合法、或い
は実質的に不活性媒体の存在しない塊状重合法、気相重
合法も利川できる。11■合温度としては−100〜2
00゜c,!i合圧力としては常圧〜100 kg/c
jで行うのが一般的である.好ましくは100〜100
゜C、常圧〜50kg/c−である.重合体はさらに炭
化水素溶媒で洗浄して用いるごともできる.ここで4−
メチルベンテン−1の重合体としては好ましくは示差走
査熱量測定法でlO゜C/sinで昇温しで測定した融
点として160゜C以上であることが好ましく、触媒系
、重合条件、ボリマーの処理条件などが4−メチルベン
テン−1の重合体の融点が160゜Cを越えるように設
定するのが好ましい.本発明において結晶性ポリプロピ
レンに対する4−メチルペンテン−1の重合体の使用割
合としては、全組成物を100部とした時4−メチルペ
ンテン−1の重合体がo.ooot−to重量部であり
残部が結晶性ポリプロピレンである.4−メチルベンテ
ン−1の重合体の量がこれ以下では効果がほとんどなく
これ以上では成形性が不良となる. ト記アルケニルシランの重合体と結晶性ポリプロピレン
の混合方法については特に制限は無く、通常のポリオレ
フィンの混合に際し利用される方法がそのまま利川でき
る.混合に際しポリオレフインの安定化に用いる、酸化
防止剤、紫外線吸収剤などを同時に混合し−ども良い.
混合は通常ヘンシエルなどで結晶性ポリプロピレンの融
点以下で混合した後、押出機などで溶融混合するのが一
般的である. (実施例) 以下に実施例を挙げ本発明についてさらに説明する. 実施例l 内容積7lのオートクレープで常法に従っ゜C金成し、
さらに精製したイソブロビルシクロペンタジエニル−1
−フルオレンをリチウム化し四塩化ジルコニウムと反応
することで得たイソブロビル(シクロペンタジエニル−
!−フルオレニル)ジルコニウムジクロリド10mgと
東洋アクゾ■製の重合度約16のメチルアルミノキサン
1.34gをトルエン4lに溶解し、重合圧力2kg/
cj−G、30″Cで1時間重合した.反応後、未反応
のプロピレンをパージした後、とり出し30℃で濾過し
、1500dのトルエンで5回洗浄した.ついでパウダ
ーは80゜Cで減圧乾燥した.得られたパウダーは58
0gであり、13C一NMRによればシンジオタクチッ
クペンタッド分率は0.912、135℃テトラリン溶
液で測定した極限粘度ηは1.24であった.一方30
0 dのフラスコに上記触媒5mg 、メチルアルミノ
キサン0.34mg, 4メチルペンテン−1 100
dを加え25゜Cで10時間重合したのち多量のメタノ
ールに加え不溶分として8.8gを得た.上記ポリプロ
ピレンのパウダー99.9部に対し0.1部の上記4−
メチルベンテン−1の重合体を加え250”Cでプレス
成型しト1のシートを作製して以下の物性を測定した.
尚、この4−メチルベンテン−■の重合体の” C−N
MRを測定したところ約43. 1pp−に観測される
ピークの強度は約42.0〜43.5ppmに観測され
るピーク強度の0.85であり、シンジオタクチソク構
造であり、また示差走査熱屋分析測定法によって10゜
(/s+inで測定したときのピーク温度として観測し
た融点は215゜Cであった.・曲げ剛性度: kg/
cj    ASTM D747  (23℃)・引張
降伏強さ: kg/cd   ASTH D63B  
(23゜C)・伸び:%        ASTM 0
638  (23゜C)・アイゾット (ノッチ付)衝
撃強度:kg−c+*/c醜ASTM D256 (2
3゜C, −tO″C)曲げ剛性度は6400kg/c
j、引張降伏強さは260kg/Cシ、伸びは360χ
、アイゾット衝撃強度はl4.5、2.8(それぞれ2
3゜C、−10゜C)kg−CM/C−であった.比較
例l 4−メチルベンテン−1の重合体を加えることなくく物
性を測定した他は実施例lと同様にしたとごろ、曲げ剛
性度は4800kg/cj、引張降伏強さは2lOkg
/cJ、伸びは680χ、アイゾット衝撃強度はl4.
0、2.1(それぞれ23℃、−10゜C) kg−c
m/c■であった. 実施例2 三井東圧化学株式会社製アイソタクチックボリボリブロ
ビレンJIIH−G 99.9重量部に実施例lで得た
シンジオタクチックボリ4−メチルベンテン−1を0.
1重量部加えて得た組成物について同様に物性を測定し
たところ曲げ剛性度は20500 kg/c艷、引張降
伏強さは370 kg/cj、伸びは380χであった
.比較例2 ボリ4−メチルンテンー1を使用することなく成形し゜
C物性を測定した他は実施例2と同様にしたところ曲げ
剛性度は18000 kg/cj、引張降伏強さは35
0 kg/cシ、伸びは680χであった.実施例3 結晶性ポリプロピレンとして三井東圧化学株式会社製ア
イソタクチックボリプロピレンのブロック共重合体BJ
IIII−Gを用いた他は実施例2と同様にしたところ
曲げ剛性度は16500 kg/cj、引張降伏強さは
310 kg/c4、伸びは460χ、アイゾット衝撃
強度は7.0 、3.6(それぞれ23℃、−10”C
)kg−cs/C鴎であった. 比較例3 4−メチルペンテンーlの重合体を用いることなく成形
して物性を測定したところ曲げ剛性度は15000kg
/cd、引張降伏強さは290 kg/cj、伸びは5
70χ、アイゾット衝撃強度は7.1 、3.5(それ
ぞれ23’C,−10゜C) kg−cs+/c−であ
った.〔発明の効果〕
The syndiotactic structure polymer of 4-methylpentene-1 used in the present invention can be obtained by polymerizing 4-methylpentene-1 using the catalyst used for producing the syndiotactic polypropylene. Specifically, it can be obtained by polymerization using a catalyst consisting of a transition metal compound having two asymmetrical ligands. As a catalyst consisting of a transition metal compound having two asymmetrical ligands, the catalyst system shown in the above-mentioned document is preferable.
For example, isoprobil (cyclopentadienyl-I-
fluorenyl) hafnium dichloride or isobrobyl (cyclopentadienyl-1-fluorenyl) zirconium dichloride, and an aluminoxane represented by R R (the middle part of the formula is a hydrocarbon residue having 1 to 3 carbon atoms) An example is a catalyst system consisting of In particular, methylaluminoxane in which P is a methyl group and n is 5 or more, preferably 10 or more is used. The ratio of aluminoxane to the above transition metal catalyst is lO~too
ooo times the mole, usually 50 to 5000 times the mole. The polymerization conditions for polymerizing 4-methylpentene-1 are not particularly limited, and a solvent polymerization method using an inert medium, a bulk polymerization method substantially free of an inert medium, and a gas phase polymerization method can also be used. 11■ Combined temperature is -100~2
00°c,! The combined pressure is normal pressure ~ 100 kg/c
It is common to use j. Preferably 100-100
°C, normal pressure ~ 50 kg/c-. The polymer can also be used after washing with a hydrocarbon solvent. Here 4-
The polymer of methylbentene-1 preferably has a melting point of 160°C or higher as measured by differential scanning calorimetry at a temperature of 10°C/sin. It is preferable that the conditions are set so that the melting point of the 4-methylbentene-1 polymer exceeds 160°C. In the present invention, the ratio of the 4-methylpentene-1 polymer to the crystalline polypropylene is such that the 4-methylpentene-1 polymer is o. ooot-to parts by weight and the remainder is crystalline polypropylene. If the amount of the 4-methylbentene-1 polymer is less than this, there will be little effect, and if it is more than this, the moldability will be poor. There are no particular restrictions on the method of mixing the alkenylsilane polymer and crystalline polypropylene, and the method used for mixing ordinary polyolefins can be used as is. When mixing, it is best to simultaneously mix antioxidants, ultraviolet absorbers, etc. used to stabilize the polyolefin.
Typically, the materials are mixed in a Henschel machine at a temperature below the melting point of the crystalline polypropylene, and then melt-mixed in an extruder. (Example) The present invention will be further explained with reference to Examples below. Example 1 C. metallization was carried out in an autoclave with an internal volume of 7 liters according to a conventional method,
Further purified isobrobylcyclopentadienyl-1
-Isobrovir (cyclopentadienyl-) obtained by lithiation of fluorene and reaction with zirconium tetrachloride
! - 10 mg of (fluorenyl) zirconium dichloride and 1.34 g of methylaluminoxane with a polymerization degree of about 16 manufactured by Toyo Akzo ■ were dissolved in 4 liters of toluene, and the polymerization pressure was 2 kg/
cj-G, polymerized for 1 hour at 30"C. After the reaction, unreacted propylene was purged, taken out, filtered at 30°C, and washed 5 times with 1500d of toluene. Then, the powder was heated at 80°C under reduced pressure. Dry.The powder obtained is 58
According to 13C-NMR, the syndiotactic pentad fraction was 0.912, and the intrinsic viscosity η measured in a tetralin solution at 135°C was 1.24. On the other hand, 30
0 d flask contains 5 mg of the above catalyst, 0.34 mg of methylaluminoxane, 100 4 methylpentene-1
d was added and polymerized for 10 hours at 25°C, and then added to a large amount of methanol to obtain 8.8 g of insoluble matter. 0.1 part of the above 4- to 99.9 parts of the above polypropylene powder
A methylbentene-1 polymer was added and press-molded at 250''C to produce sheet 1, and the following physical properties were measured.
In addition, "C-N of this 4-methylbentene-■ polymer
When MR was measured, it was about 43. The intensity of the peak observed at 1 pp- is 0.85 of the peak intensity observed at about 42.0 to 43.5 ppm, indicating a syndiotactic structure, and the intensity of the peak observed at 10° ( The melting point observed as the peak temperature when measured at /s+in was 215°C.・Bending rigidity: kg/
cj ASTM D747 (23℃)・Tensile yield strength: kg/cd ASTH D63B
(23°C)・Elongation:% ASTM 0
638 (23°C) Izod (notched) Impact strength: kg-c++/c Ugly ASTM D256 (2
3゜C, -tO″C) Bending rigidity is 6400kg/c
j, tensile yield strength is 260kg/C, elongation is 360χ
, Izod impact strength is l4.5, 2.8 (2 respectively)
3°C, -10°C) kg-CM/C-. Comparative Example 1 The same procedure as Example 1 was carried out except that the physical properties were measured without adding the 4-methylbentene-1 polymer, and the bending rigidity was 4800 kg/cj and the tensile yield strength was 2 lOkg.
/cJ, elongation is 680χ, Izod impact strength is l4.
0, 2.1 (23℃, -10℃, respectively) kg-c
It was m/c ■. Example 2 Syndiotactic poly-4-methylbentene-1 obtained in Example 1 was added to 99.9 parts by weight of isotactic polybolybrobylene JIIH-G manufactured by Mitsui Toatsu Chemical Co., Ltd. in an amount of 0.
When the physical properties of a composition obtained by adding 1 part by weight were similarly measured, the bending rigidity was 20,500 kg/c, the tensile yield strength was 370 kg/cj, and the elongation was 380χ. Comparative Example 2 The same procedure as Example 2 was carried out except that the molding was performed without using Poly-4-Methylenethene-1 and the C physical properties were measured. The bending rigidity was 18000 kg/cj and the tensile yield strength was 35.
The weight was 0 kg/c, and the elongation was 680χ. Example 3 Isotactic polypropylene block copolymer BJ manufactured by Mitsui Toatsu Chemical Co., Ltd. as crystalline polypropylene
The same procedure as Example 2 was performed except that III-G was used, and the bending rigidity was 16500 kg/cj, the tensile yield strength was 310 kg/c4, the elongation was 460χ, and the Izod impact strength was 7.0 and 3.6. (23℃, -10"C respectively)
) kg-cs/C seaweed. Comparative Example 3 When molded without using a 4-methylpentene polymer and measured its physical properties, the bending rigidity was 15,000 kg.
/cd, tensile yield strength is 290 kg/cj, elongation is 5
The Izod impact strength was 7.1 and 3.5 (23'C and -10°C, respectively) kg-cs+/c-. 〔Effect of the invention〕

Claims (1)

【特許請求の範囲】 1、シンジオタクチックポリ4−メチルペンテン−1を
0.0001〜10wt部と高結晶性ポリプロピレンを
99.9999〜90wt部混合してなる高結晶性ポリ
プロピレン樹脂組成物。 2、シンジオタクチックポリ4−メチルペンテン−1の
融点が160℃以上である特許請求の範囲第1項記載の
方法。
[Scope of Claims] 1. A highly crystalline polypropylene resin composition prepared by mixing 0.0001 to 10 wt parts of syndiotactic poly4-methylpentene-1 and 99.9999 to 90 wt parts of highly crystalline polypropylene. 2. The method according to claim 1, wherein the syndiotactic poly-4-methylpentene-1 has a melting point of 160°C or higher.
JP1242190A 1990-01-24 1990-01-24 Highly crystalline polypropylene resin composition Expired - Fee Related JP2828716B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1242190A JP2828716B2 (en) 1990-01-24 1990-01-24 Highly crystalline polypropylene resin composition

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1242190A JP2828716B2 (en) 1990-01-24 1990-01-24 Highly crystalline polypropylene resin composition

Publications (2)

Publication Number Publication Date
JPH03217442A true JPH03217442A (en) 1991-09-25
JP2828716B2 JP2828716B2 (en) 1998-11-25

Family

ID=11804804

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1242190A Expired - Fee Related JP2828716B2 (en) 1990-01-24 1990-01-24 Highly crystalline polypropylene resin composition

Country Status (1)

Country Link
JP (1) JP2828716B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419677A1 (en) * 1989-04-18 1991-04-03 MITSUI TOATSU CHEMICALS, Inc. Syndiotactic polypropylene resin composition
JP2000239463A (en) * 1999-02-22 2000-09-05 Fina Technol Inc Composition useful for tough and highly crystalline film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0419677A1 (en) * 1989-04-18 1991-04-03 MITSUI TOATSU CHEMICALS, Inc. Syndiotactic polypropylene resin composition
EP0419677A4 (en) * 1989-04-18 1992-06-17 Mitsui Toatsu Chemicals Inc. Syndiotactic polypropylene resin composition
JP2000239463A (en) * 1999-02-22 2000-09-05 Fina Technol Inc Composition useful for tough and highly crystalline film

Also Published As

Publication number Publication date
JP2828716B2 (en) 1998-11-25

Similar Documents

Publication Publication Date Title
JP2618169B2 (en) Polypropylene composition
EP0870779B1 (en) Metallocene catalyst and catalyst system for producing polypropylene blend of iso- and syndiotactic polypropylene.
US7915359B2 (en) Propylene resin composition
JP5383808B2 (en) Polyolefin composition exhibiting good whitening resistance
US5278216A (en) Syndiotactic polypropylene resin composition
JP5052490B2 (en) Crystalline polypropylene resin composition and automotive interior / exterior parts
JP3530143B2 (en) Polyolefin resin composition
TW440583B (en) Polypropylene resin and polypropylene-based resin composition
RU2365605C2 (en) Polypropylene composition
US5169924A (en) Copolymer of propylene and butene-1
CA2030532C (en) Syndiotactic polypropylene resin composition
JP2831574B2 (en) Propylene block copolymer, production method thereof and composition thereof
JPH03217442A (en) Highly crystalline polypropylene resin composition
JPH11166084A (en) Polypropylene-based resin composition and film made therefrom
JP2974404B2 (en) Novel polymer and polypropylene resin composition containing the same
JP2875820B2 (en) Syndiotactic polypropylene resin composition
JP3330657B2 (en) Polypropylene composition
JP4076397B2 (en) Polypropylene paint molding
JPH09104729A (en) Propylene block copolymer, its production and propylene resin composition containing the copolymer
JP2923026B2 (en) Butene-1 copolymer and resin composition containing the same
JPH0718151A (en) Polypropylene composition
JPH06248133A (en) Polypropylene composition and its production
JPH0494917A (en) Molding method for syndiotactic polypropylene
JP2818252B2 (en) Syndiotactic polypropylene drawing method
JP3045741B2 (en) Syndiotactic polypropylene resin composition

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees