摘要:
A high stereoregular polypropylene characterized in that
(a) an isotactic pentad (m m m m) is 0.950 to 0.995, (b) a syndiotactic pentad (r r r r) is 0 to 0.01, (c) a different bond due to 2,1- and 1,3-insertions of propylene monomer is 0 to 0.3 mol%, (d) an absence of a terminal double bond is confirmed, (e) a weight average molecular weight (Mw) is 50,000 to 1,000,000 and (f) a ratio (Mw/Mn) of the weight average molecular weight (Mw) to a number average molecular weight (Mn) is 1.5 to 3.8, (a) to (d) being determined from 13 C NMR spectra. The high stereoregular polypropylenes have narrow molecular weight distributions and high melting points, which exhibit very high tenacity, high-temperature rigidity, heat resistance and good molding properties when used as molding materials.
摘要翻译:一种高立构规则聚丙烯,其特征在于(a)全同立构五单元组(mmmm)为0.950〜0.995,(b)间同立构五单元组(rrrr)为0〜0.01,(c)由于2,1-和1不同的键, 丙烯单体的3-插入为0〜0.3摩尔%,(d)不存在末端双键,(e)重均分子量(Mw)为50,000〜1,000,000,(f)比例(Mw / 重均分子量(Mw)与数均分子量(Mn)之比为1.5至3.8,(a)至(d)由13 C NMR谱确定。 高立体规则聚丙烯具有窄的分子量分布和高熔点,当用作成型材料时,其表现出非常高的韧性,高温刚性,耐热性和良好的成型性能。
摘要:
A catalyst component for producing crystalline olefin polymers comprises a linear olefin/non-olefin block copolmer having at least one linear olefin block copolymer and at least one non-linear olefin polymer block and (a) a titanium trichloride composition or (b) titanium, magnesium, a halogen and an electron donor as components for a carrier; the content of the linear olefin polymer block being from 0.1 to 49.5 by weight, the content of the non-linear olefin polymer block being from 0.01 to 49.5% by weight, the ratio by weight of the linear olefin polymer block to the non-linear olefin polymer block being 2/98 to 98/2 and in the case of (a), the content of the titanium trichloride composition being 99.89 to 1.0% by weight.
摘要:
The present invention provides a polypropylene composition having a high melt tension and an excellent formability by blending polypropylene (I) produced with a metallocene catalyst type and an olefin (co)polymer (II) comprising 0.01 to 5 parts by weight of the following component (II-1) and 100 parts by weight of the following component (II-2); (II-1):an ethylene homopolymer or an ethylene-olefin copolymer comprising at least 50 wt% ethylene polymerization units, which is a high molecular weight polyethylene having an intrinsic viscosity [η E ] measured in tetralin at 135°C of 15 to 100 dl/g, and (II-2): polypropylene.
摘要翻译:本发明提供了一种聚丙烯组合物,其具有高熔体张力和优异的成形性,通过共混制得的茂金属催化剂类型的聚丙烯(I)和烯烃(共)聚合物(II),其包含0.01至5重量份的以下组分( II-1)和100重量份的以下组分(II-2); (II-1):包含至少50重量%的乙烯聚合单元的乙烯均聚物或乙烯 - 烯烃共聚物,其是在135℃下在四氢化萘中测得的特性粘度Äet E E的高分子量聚乙烯为15-100 dl / g和(II-2):聚丙烯。
摘要:
A plastic molded product of olefin (co)polymer composition comprises 0.01 - 5.0 weight parts high molecular weight polyethylene with an intrinsic viscosity η E in the range of 15 - 100dl/g measured in 135°C tetralin and preferably 100 weight parts polypropylene. The high molecular weight polyethylene has an average particle size in the range of 1 - 5000nm and is finely dispersed as fine granules in the polypropylene, so that high melt strength and high crystallization temperature are attained, enabling various molding methods to be performed with high speed productivity. Using the polymer composition, plastics such as a resin foam, a film, a sheet, a layered plastic article with a coated substrate surface, a hollow plastic article, an injection molded plastic article, a fiber, a nonwoven web or a continuous tube-shaped plastic are provided. The olefin (co)polymer composition is obtained by preparing high molecular weight polyethylene granules using e.g. a titanium transition metal compound catalyst, and adding these, e.g. as a polymerization catalyst of propylene, singly or together with a polyolefin preparing catalyst.
摘要:
To provide a catalyst for olefin (co)polymerization which shows a high polymerization activity and which can produce olefin (co)polymers having a high molecular weight and a narrow molecular weight distribution, a catalyst for olefin (co)polymerization is rendered a carried type catalyst comprising a transition metal compound represented by general formula (I) or (II) below and aluminoxane carried on a fine particulate carrier:
{ [η-C 5 R 1 5 M 1 X 1 2 ] [µ-η-C 5 R 2 4 -SiR 3 2 -η-C 9 R 4 6 ] [η-C 5 R 5 5 M 1 X 2 2 ]} (I)
{ [η-C 5 R 6 5 M 2 X 3 2 ] [µ-η-C 5 R 7 4 -B-η-C 5 R 8 4 ] [η, -C 5 R 9 5 M 2 X 4 2 ]} (II)
[In formula (I) or (II) above, η-C 5 R 1 5 , η-C 5 R 2 4 , η -C 5 R 5 5 , η-C 5 R 6 5 , η-C 5 R 7 4 , η-C 5 R 8 4 , and η-C 5 R 9 5 represent substituted cyclopentadienyl groups, respectively. In formula (I) above, η-C 9 R 4 6 represents a substituted indenyl group. SiR 3 2 is a crosslinking group and R 3 is a hydrocarbon group having 1 to 20 carbon atoms. In formula (II) above, B is a crosslinking group consisting of a hydrocarbon containing a silicon atom, its backbone chain containing at least one silicon atom and its chain length being 2 to 20 atoms. In formulae (I) and (II) above, M 1 and M 2 represent transition metals selected from the group consisting of titanium, zirconium and hafnium. Further, in formula (I) above, each of X 1 and X 2 independently and, in formula (II) above, each of X 3 and X 4 independently represents a hydrogen atom, a halogen atom or a hydrocarbon group having 1 to 20 carbon atoms.]
摘要翻译:是提供一种用于烯烃(共)聚合用催化剂,其表现出高的聚合活性和能生产具有高分子量和窄分子量分布的烯烃一个催化剂的烯烃(共)聚合物的(共)聚合反应呈现的携带型 催化剂,其包含由通式(I)或(II)的下方,携带一个细颗粒载体上的铝氧烷表示的过渡金属化合物:A A ETA -C5R <1> 5M <1> X <1> 2R阿木 - ETA -C5R <2> 4-SIR <3> 2- ETA -C9R <4> 6UäETA -C5R <5> 5M <1> X <2> 2UU A A ETA -C5R <6> 5M <2> X <3> 2R一亩 - ETA -C5R <7> 4-B- ETA -C5R <8> 4UEÄETA,-C5R <9> 5M <2> X <4> 2UU AON式(I)或(II)中,ETA -C5R <1> 5,ETA -C5R <2> 4,ETA -C5R <5> 5,η--C5R <6> 5,η--C5R <7> 4,ETA -C5R <8> 4和η - C5R <9> 5表示substituiertem环戊二烯基,分别。 在式(I)中,ETA -C9R <4> 6 darstellt一个substituiertem茚基。 SIR <3>图2是交联基团和R <3>是具有1〜20个碳原子的烃基。 在式(II)中,B是交联基团由含有硅原子的烃,其主链含有至少一个硅原子和其链长为2〜20原子。 在式餐饮(I)和(II)中,M <1>和M <2>表示选自钛,锆和铪中选择的过渡金属。 此外,在式(I)中,每个X <1>和X <2>unabhängig和,在式(II)中,每个X <3>和X <4>unabhängigdarstellt氢原子,卤素原子的 或具有1至20个碳atoms.Ü的烃基
摘要:
A process for producing a modified polypropylene having (A) a degree of branching of substantially 1, (B) a relationship between its melt tension (MS) at 230°C and its intrinsic viscosity (η) measured in tetralin at 135°C expressed by an inequality log (MS) > 4.24 x log [η] - 0.915, and (C) a percentage of extraction residue in boiling xylene of 1% by weight or less, which process comprises: adding 0.05 to 10 millimols of a cross-linking auxiliary to 100 g of a linear polypropylene; mixing the cross-linking auxiliary and the linear polyethylene, irradiating the mixture with ionizing radiation so as to give an absorbed dosage of 1 to 20 kGy; and subsequently heat-treating the resulting material at 80° to 350°C.