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公开(公告)号：US4946898A
公开(公告)日：1990-08-07
申请号：US265034
申请日：1988-10-31
摘要： The present invention relates to a propylene polymer composition comprising:60 to 94% by weight of a propylene homopolymer having (a) an intrinsic viscosity ([.eta..sub.1 ]) of 0.5 to 5 dl/g, (b) a xylene soluble content at ordinary temperature (Xs) of not more than 3% by weight, and a difference (.DELTA.[.eta..sub.1 ]) between ([.eta..sub.1 ]) of xylene insoluble portion at the ordinary temperature and ([.eta..sub.1 ]) of xylene soluble portion at the ordinary temperature of not more than 0.5 dl/g, (c) an isotactic pentad fraction (IP) falling within the range represented by the following equation:IP.gtoreq.-0.624[.eta..sub.1 ]+97.5,and (d) a crystallization temperature (Tc) falling within the range represented by the following equation:Tc.gtoreq.-2.33[.eta..sub.1 ]+116.0; and6 to 40% by weight of a propylene-ethylene random copolymer having (e) an intrinsic viscosity ([.eta..sub.2 ]) of not less than 2.8 dl/g and (f) an ethylene content of 30 to 80% by weight.Moldings obtained from the composition of the present invention are high in both impact resistance and stiffness, and can find various applications as moldings well balanced in physical properties.
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公开(公告)号：US4565844A
公开(公告)日：1986-01-21
申请号：US653509
申请日：1984-09-21
IPC分类号： C08K3/34 , C08K5/00 , C08K5/098 , C08K5/1575 , C08K13/02 , C08L23/00 , C08L51/00 , C08L51/02 , C08L53/00 , C08L77/00 , C08L101/00 , C08K5/10 , C08K5/15 , C08L23/16
CPC分类号： C08K5/098 , C08K3/34 , C08K5/1575 , H01L2924/01078
摘要： The propylene-ethylene block copolymer composition of the invention is excellent in transparency as well as in stiffness and low temperature impact strength.The copolymer composition of the present invention comprises (a) from 0.01 to 1.0 part by weight of a nucleating agent and (b) from 0.01 to 3.0 parts by weight of talc having an average particle size of not more than 10 microns, admixed in 100 parts by weight of propylene-ethylene block copolymer. Said propylene-ethylene block copolymer was formed in a multi-stage polymerization process wherein the ethylene content of the copolymer formed at the propylene-ethylene copolymerization stage is from 5 to 40% by weight based on the total polymerization amount of the copolymer formed at said propylene-ethylene copolymerization stage.
摘要翻译： 本发明的丙烯 - 乙烯嵌段共聚物组合物的透明性以及硬度和低温冲击强度都优异。 本发明的共聚物组合物包含（a）0.01至1.0重量份的成核剂和（b）0.01至3.0重量份的平均粒径不大于10微米的滑石，其混合在100 重量份的丙烯 - 乙烯嵌段共聚物。 所述丙烯 - 乙烯嵌段共聚物是在多阶段聚合方法中形成的，其中在丙烯 - 乙烯共聚阶段形成的共聚物的乙烯含量为5-40％（重量），基于在所述 丙烯 - 乙烯共聚阶段。
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公开(公告)号：US5330949A
公开(公告)日：1994-07-19
申请号：US515782
申请日：1990-04-26
CPC分类号： C08F10/00 , Y10S526/943
摘要： A method for producing a polyolefin is disclosed which comprises polymerizing an .alpha.-olefin in the presence of a catalyst composition comprising (A) a solid catalyst component prepared by contacting (a) a solid component comprising a magnesium alkoxide and/or a magnesium salt of a fatty acid supported on an inorganic oxide composed of at least one member selected from the group consisting of oxides of elements belonging to Groups II, III and IV of the periodic table and/or a composite inorganic oxide containing at least one member selected from the group consisting of oxides of elements belonging to Groups II, III and IV of the periodic table, the inorganic oxide or composite inorganic oxide having a surface hydroxide concentration of 3 .mu.mol/m.sup.2 or less, (b) an electron donating compound and (c) a titanium halide, (B) an organic metal compound, and (C) an electron donating compound.According to the method, a step of removing the catalyst residue: from the polypropylene produced can be eliminated and the products have well balanced mechanical strength such as stiffness and impact strength.
摘要翻译： 公开了一种生产聚烯烃的方法，其包括在催化剂组合物存在下聚合α-烯烃，所述催化剂组合物包含（A）通过使（a）包含烷氧基镁和/或镁盐的固体组分与 负载在由选自元素周期表第II，III和Ⅳ族的元素的氧化物中的至少一种构成的无机氧化物上的脂肪酸和/或含有选自以下的至少一种的复合无机氧化物： 由元素周期表II，III和IV族元素的氧化物，表面氢氧化物浓度为3μmol/ m 2以下的无机氧化物或复合无机氧化物组成的组，（b）给电子化合物和（c ）卤化钛，（B）有机金属化合物，和（C）给电子化合物。 根据该方法，可以消除从生产的聚丙烯中除去催化剂残留物的步骤，并且产品具有良好平衡的机械强度，例如刚度和冲击强度。
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公开(公告)号：US4948841A
公开(公告)日：1990-08-14
申请号：US263803
申请日：1988-10-28
摘要： The present invention relates to a propylene polymer composition comprising:65 to 95% by weight of a propylene homopolymer having (a) an intrinsic viscosity ([.eta..sub.1 ]) of 0.5 to 3.5 dl/g, (b) a xylene soluble content at ordinary temperature (Xs) of not more than 3% by weight, and a difference (.DELTA.[.eta..sub.1 ]) between ([.eta..sub.1 ]) of xylene insoluble portion at the ordinary temperature and ([.eta..sub.1 ]) of xylene soluble portion at the ordinary temperature of not more than 0.5 dl/g, (c) an isotactic pentad fraction (IP) falling within the range represented by the following equation:IP.gtoreq.-0.624[.eta..sub.1 ]+97.5,and (d) a crystallization temperature (Tc) falling within the range represented by the following equation:Tc.gtoreq.-2.33[.eta..sub.1 ]+116.0;and5 to 35% by weight of a propylene-ethylene random copolymer having (e) an intrinsic viscosity ([.eta..sub.2 ]) of less than 2.8 dl/g and (f) an ethylene content of 10 to 35% by weight.Moldings obtained from the composition of the present invention are good in luster and high in both impact resistance and stiffness, and can find various applications as moldings well balanced in physical properties.
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公开(公告)号：US4734448A
公开(公告)日：1988-03-29
申请号：US880012
申请日：1986-06-30
申请人： Toshikazu Kasahara , Makoto Iida
发明人： Toshikazu Kasahara , Makoto Iida
IPC分类号： C08F8/50 , C08F210/16 , C08F255/02 , C08F297/08 , C08K5/10 , C08K5/103 , C08L23/10 , C08L23/12 , C08L23/14 , C08L23/16 , C08L51/06 , C08L53/00 , C08K5/09
CPC分类号： C08L51/06 , C08F210/16 , C08F255/02 , C08F297/08 , C08F8/50 , C08K5/103 , C08K5/14 , C08L23/12 , C08L23/142 , C08F2800/20 , C08F2810/10 , C08K5/10 , C08L2023/42 , C08L2205/02 , C08L2205/03 , C08L23/14 , C08L23/16 , C08L2308/00
摘要： A propylene polymer composition having excellent whitening resistance, impact resistance, rigidity and flowability.The propylene polymer composition comprises (A) 100 parts by weight of a propylene polymer or a modified polymer obtained by heat-treating the propylene polymer in an organic peroxides and (B) 0.1 to 1.5 parts by weight of an ester of an aliphatic saturated monocarboxylic acid and a polyhydric alcohol, and the propylene polymer essentially consists of two particular polymer fractions or three particular polymer fractions polymerized over stereoregular catalysts and combinationed in a specific ratio.
摘要翻译： 丙烯聚合物组合物具有优异的耐白化性，耐冲击性，刚性和流动性。 丙烯聚合物组合物包含（A）100重量份丙烯聚合物或通过在有机过氧化物中热处理丙烯聚合物而获得的改性聚合物，和（B）0.1至1.5重量份的脂族饱和一元羧酸酯 酸和多元醇，并且丙烯聚合物基本上由两种特定的聚合物级分或三种特定的聚合物级分组成，所述特定的聚合物级分通过立体规则催化剂聚合并以特定比例组合。
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6.发明授权Process for the production of propylene block copolymers by a three step method 失效通过三步法制备丙烯嵌段共聚物的方法
公开(公告)号：US4550145A
公开(公告)日：1985-10-29
申请号：US559381
申请日：1983-12-08
IPC分类号： C08F297/00 , C08F4/12 , C08F4/14 , C08F4/16 , C08F297/08
CPC分类号： C08F297/086
摘要： A process for producing a propylene block copolymer by a three-step reaction in the presence of a stereoregular catalyst. At the first step, propylene is polymerized at a temperature of 55.degree. C. or more to form polypropylene having an intrinsic viscosity of from 0.5 to 3.5 in the prescribed amount. At the second step, propylene is polymerized at a temperature of from 30.degree. to 90.degree. C. to form polypropylene having an intrinsic viscosity of at least 4 in the prescribed amount. And at the third step, ethylene and propylene are copolymerized at a temperature of from 30.degree. to 90.degree. C. to form an ethylene-propylene copolymer having an intrinsic viscosity of at least three in the prescribed amount. The propylene block copolymer formed by the three steps is superior and well balanced in impact resistance and stiffness.
摘要翻译： 一种在有规立构催化剂存在下通过三步反应制备丙烯嵌段共聚物的方法。 在第一步骤中，丙烯在55℃或更高的温度下聚合，形成规定量的特性粘度为0.5-3.5的聚丙烯。 在第二步骤中，丙烯在30-90℃的温度下聚合，形成规定量的特性粘度至少为4的聚丙烯。 在第三步骤中，乙烯和丙烯在30-90℃的温度下共聚，形成规定量的特性粘度至少为3的乙烯 - 丙烯共聚物。 通过三个步骤形成的丙烯嵌段共聚物在耐冲击性和刚度方面是优异的和均衡的。
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