Process for the preparation of olefin (co) polymers, olefin copolymers, and application thereof
    2.
    发明授权
    Process for the preparation of olefin (co) polymers, olefin copolymers, and application thereof 有权
    烯烃(共)聚合物,烯烃共聚物的制备方法及其应用

    公开(公告)号:US06410662B1

    公开(公告)日:2002-06-25

    申请号:US09485492

    申请日:2000-02-11

    IPC分类号: C08F444

    摘要: Disclosed is a process for producing olefin polymers or copolymers which can freely regulates the molecular weight of the polymers or copolymers as well as novel olefin polymers or copolymers excellent in rigidity, heat-resisting property and transparency, moldings and compositions thereof which find a wide variety of applications in versatile industrial parts including containers, films, sheets, filaments or fibers, featured by (1) a process for producing olefin polymers or copolymers by the aid of a catalyst comprised predominantly of the compounds: (A) a transition metal compound of the formula: Q(C5H4−mR1m)(C5H4−nR2n)MXY, (B) an aluminoxane, (C) a fine particulate carrier, and (D) an organoaluminum compound; (2) olefin polymers or copolymers characterized by (a) a specific ratio of isotactic pentad, (b) 2,1- and 1.3-propylene units contents in the polymer chain, (c) a specific Mw, (d) a specific Mw/Mn, and (e) in case of elevating temperature of o-dichlorobenzene continuously or stepwise up to given temperatures to measure the amount of eluated polyolefin at each temperature, the position of a main elution peak and the amount of components existing in the range of ±10° C. of the main elution peak; (3) injection moldings, films, filaments or fibers, and non-woven fabric of the polypropylene obtained; and (4) a composition comprising the polypropylene obtained and an &agr;-nucleating agent or a composition comprising the polypropylene and a radical generator and having been produced by subjecting to the mixture to melt-kneading.

    摘要翻译: 公开了可以自由调节聚合物或共聚物的分子量的烯烃聚合物或共聚物的方法,以及刚性,耐热性能和透明性,模制品和组合物的新型烯烃聚合物或共聚物,其具有广泛的种类 在包括容器,膜,片,长丝或纤维在内的通用工业部件中的应用,其特征在于(1)主要由以下化合物构成的催化剂生产烯烃聚合物或共聚物的方法:(A)过渡金属化合物 式(QH(C5H4-mR1m)(C5H4-nR2n))MXY,(B)铝氧烷,(C)微粒载体和(D)有机铝化合物; (2)烯烃聚合物或共聚物,其特征在于(a)聚合物链中全同立构五单体,(b)2,1-和1.3-丙烯单元含量的比例,(c)特定Mw,(d)特定Mw / Mn,(e)在邻二氯苯连续或逐步升高至给定温度的情况下,在每个温度下测量洗脱聚烯烃的量,主洗脱峰的位置和存在于该范围内的组分的量 ±10℃的主洗脱峰; (3)注射成型品,薄膜,细丝或纤维,以及得到的聚丙烯的无纺布; 和(4)包含所得聚丙烯和α-成核剂或包含聚丙烯和自由基发生剂的组合物并通过使混合物进行熔融捏合而制备的组合物的组合物。

    Polyolefin resin composition
    4.
    发明授权
    Polyolefin resin composition 失效
    聚烯烃树脂组合物

    公开(公告)号:US4487871A

    公开(公告)日:1984-12-11

    申请号:US520171

    申请日:1983-08-04

    摘要: A polyolefin resin composition for metallized films, having superior high-impact properties and heat-sealability and also superior printability and adhesive properties of metallized surface and further a good taken-up figure of rolled film is provided, which composition is obtained by blending a crystalline propylene-.alpha.-olefin copolymer containing 70% by weight or more of propylene component and having a crystalline m.p. of 150.degree. C. or lower, with a high density polyethylene having a density of 0.940 g/cm.sup.3 or higher, in blending ratios of 96 to 80% by weight of the copolymer and 4 to 20% by weight of the polyethylene, the ratio of the melt flow rate of the polyethylene to that of the copolymer being .gtoreq.0.7.

    摘要翻译: 一种用于金属化膜的聚烯烃树脂组合物,具有优异的高冲击性和热封性,并且还具有优异的印刷性和金属化表面的粘合性,并且还提供了良好的轧制膜卷取,该组合物通过将结晶 含有70重量%以上丙烯成分并具有结晶mp的丙烯-α-烯烃共聚物 与密度为0.940g / cm 3以上的高密度聚乙烯,共聚物的共聚比例为96〜80重量%,聚乙烯为4〜20重量%,比例为150℃以下 的聚乙烯的熔体流动速率与共聚物的熔体流动速率> 0.7。

    Polypropylene resin foam-molded article

    公开(公告)号:US06783844B2

    公开(公告)日:2004-08-31

    申请号:US10196192

    申请日:2002-07-17

    IPC分类号: B32B520

    摘要: Provided is a polypropylene resin foam-molded article which has a rib having a relatively small thickness and which has an improved strength at a boundary part between a main body part and the rib part without increasing a thickness of the rib part. The polypropylene resin foam-molded article is obtained by molding a material for a foam-molded article using a polypropylene resin, wherein the molded article comprises a main body part and a rib part provided vertically to the main body part; the rib part has a thickness (Tr) of 3 mm or less, or a thickness ratio (Tr/Tb) of a thickness of the rib part (Tr) to a thickness of the main body part (Tb) is 0.8 or less; the main body part and the rib part each comprise a non-foamed surface layer and an intermediate layer having a foamed structure; and the intermediate layer in the main body part is connected to the intermediate layer in the rib part. It is molded from the material for a foam-molded article using a polypropylene resin in which a melt flow rate and a melt tension satisfy a fixed relation.

    Film having gas permeability
    6.
    发明授权
    Film having gas permeability 有权
    具有透气性的薄膜

    公开(公告)号:US06348271B1

    公开(公告)日:2002-02-19

    申请号:US09445194

    申请日:1999-12-02

    IPC分类号: B32B2700

    摘要: An object of the present invention is to provide a drawn polypropylene film as a wrapping material that has transparency and mechanical properties sufficient as a wrapping material yet having the needed gas permeability for maintaining the freshness of the enclosed goods and additionally enables control of permeability of gases to a certain proportion if needed even if secondary steps such as perforation processing, etc., are eliminated. The present invention provides a polypropylene film drawn at least monoaxially which comprises a propylene resin composition comprising a propylene polymer component and a copolymer component containing ethylene and propylene, wherein a content of the copolymer component is 7 to 70% by weight based on the weight of the composition, and the film has a thickness [D1] of 10 to 100&mgr;m and has the following characteristics (1) to (3): (1) [TH2O] (a permeability of water vapor)=9 to 50 (unit: g/m2·24 Hr, in accordance with JIS Z-0208), (2) [TO2] (a permeability of oxygen gas)=600-12,500 (unit: nmol (STP)/m2·s·100 kPa, in accordance with JIS K-7126A), (3) [Tethylene] (a permeability of ethylene gas)=600-22,500 (unit: nmol (STP)/m2·s·100 kPa, in accordance with JIS K-7126A.)

    摘要翻译: 本发明的目的是提供一种作为包装材料的拉伸聚丙烯薄膜,其具有足够的透明度和机械性能作为包装材料,但具有所需的气体渗透性,以保持封闭的商品的新鲜度,并且还可以控制气体的渗透性 如果需要,即使消除诸如穿孔处理等的二次步骤,也能够达到一定比例。 本发明提供至少单轴拉伸的聚丙烯薄膜,其包含丙烯聚合物组分和含有乙烯和丙烯的共聚物组分的丙烯树脂组合物,其中共聚物组分的含量为7至70重量%,基于 该组合物和膜的厚度[D1]为10〜100μm,具有以下特征(1)〜(3):(1)[TH 2 O](水蒸气的渗透性)= 9〜50(单位:g / m2·Hr,根据JIS Z-0208),(2)[TO2](氧气的渗透性)= 600-12,500(单位:nmol(STP)/ m 2·s.100kPa),根据 JIS K-7126A),(3)[Tethylene](乙烯气体的渗透性)= 600-22,500(单位:nmol(STP)/ m2.s.100kPa,按照JIS K-7126A)

    Polyolefin resin composition
    7.
    发明授权
    Polyolefin resin composition 失效
    聚烯烃树脂组合物

    公开(公告)号:US4508786A

    公开(公告)日:1985-04-02

    申请号:US625951

    申请日:1984-06-29

    摘要: A polyolefin resin composition for metallized films, having superior high-impact properties and heat-sealability and also superior printability and adhesive properties of metallized surface and further a good taken-up figure of rolled film is provided, which composition is obtained by blending a crystalline propylene-.alpha.-olefin copolymer containing 70% by weight or more of propylene component and having a crystalline m.p. of 150.degree. C. or lower, with a high density polyethylene having a density of 0.940 g/cm.sup.3 or higher, in blending ratios of 96 to 80% by weight of the copolymer and 4 to 20% by weight of the polyethylene, the ratio of the melt flow rate of the polyethylene to that of the copolymer being .gtoreq.0.7.

    摘要翻译: 一种用于金属化膜的聚烯烃树脂组合物,具有优异的高冲击性和热封性,并且还具有优异的印刷性和金属化表面的粘合性,并且还提供了良好的轧制膜卷取,该组合物通过将结晶 含有70重量%以上丙烯成分并具有结晶mp的丙烯-α-烯烃共聚物 与密度为0.940g / cm 3以上的高密度聚乙烯,共聚物的共聚比例为96〜80重量%,聚乙烯为4〜20重量%,比例为150℃以下 的聚乙烯的熔体流动速率与共聚物的熔体流动速率> 0.7。