Process for making polyolefin compositions containing exfoliated clay
    11.
    发明授权
    Process for making polyolefin compositions containing exfoliated clay 失效
    制备含有剥离粘土的聚烯烃组合物的方法

    公开(公告)号:US06979718B2

    公开(公告)日:2005-12-27

    申请号:US10628542

    申请日:2003-07-28

    CPC classification number: C08F110/02 C08F4/642 C08F4/025

    Abstract: A clay-filled polyolefin composition and process for making it are disclosed. The process involves treatment of a non-acid-treated smectite clay with a Ziegler-Natta catalyst in the presence of a hydrocarbon and subsequent polymerization of an olefin in the presence of the treated clay and an organoaluminum cocatalyst. Results indicate that filled compositions produced by this process contain exfoliated clay.

    Abstract translation: 公开了一种粘土填充的聚烯烃组合物及其制备方法。 该方法包括在烃存在下用齐格勒 - 纳塔催化剂处理非酸处理的蒙皂石粘土,随后在处理的粘土和有机铝助催化剂存在下聚合烯烃。 结果表明,通过该方法制备的填充组合物含有剥离粘土。

    Preparation of polyethylene
    12.
    发明授权
    Preparation of polyethylene 失效
    聚乙烯的制备

    公开(公告)号:US06727331B2

    公开(公告)日:2004-04-27

    申请号:US10041002

    申请日:2001-12-28

    Abstract: A polyethylene having improved rheological properties is disclosed. The polyethylene has a melt index (MI2) from about 0.01 dg/min to about 50 dg/min and a melt strength (&eegr;) that satisfies MI2×&eegr;≧3.5. A process for making the polyethylene is also disclosed. The process uses an azaborolinyl-containing single-site catalyst in the presence of hydrogen, where the hydrogen consumption is controlled to be less than 30%.

    Abstract translation: 公开了具有改善的流变特性的聚乙烯。 聚乙烯具有约0.01dg / min至约50dg / min的熔体指数(MI2)和满足MI2xeta = 3.5的熔体强度(η)。 还公开了制备聚乙烯的方法。 该方法在氢气存在下使用含有氮杂硼烷的单中心催化剂,其中氢消耗被控制在小于30%。

    MODIFYING POLYETHYLENE MADE BY ZIEGLER OR SINGLE-SITE CATALYST WITH FREE RADICAL INITIATOR
    14.
    发明申请
    MODIFYING POLYETHYLENE MADE BY ZIEGLER OR SINGLE-SITE CATALYST WITH FREE RADICAL INITIATOR 失效
    采用ZIEGLER或单壁催化剂制备聚乙烯与自由放射原子

    公开(公告)号:US20080171842A1

    公开(公告)日:2008-07-17

    申请号:US11652236

    申请日:2007-01-11

    CPC classification number: C08F8/06 C08F10/02

    Abstract: A method of modifying a polyethylene is disclosed. In the method ethylene or a mixture of ethylene and a C3-C10 α-olefin is polymerized in an organic solvent with a Ziegler or single-site catalyst to form an initial polyethylene solution. The initial polyethylene solution is then reacted with a free radical initiator to produce a modified polyethylene. The modified polymer has an enhanced melt elasticity and increased long chain branching index, and is essentially free of gel.

    Abstract translation: 公开了改性聚乙烯的方法。 在该方法中,乙烯或乙烯和C 3 -C 10α-烯烃的混合物在有机溶剂中与齐格勒或单中心催化剂聚合以形成初始聚乙烯溶液。 然后将初始聚乙烯溶液与自由基引发剂反应以制备改性聚乙烯。 改性聚合物具有增强的熔体弹性和增加的长链支化指数,并且基本上不含凝胶。

    Shear modification of HDPE-clay nanocomposites
    16.
    发明授权
    Shear modification of HDPE-clay nanocomposites 失效
    HDPE-粘土纳米复合材料的剪切改性

    公开(公告)号:US06884834B2

    公开(公告)日:2005-04-26

    申请号:US10247593

    申请日:2002-09-19

    CPC classification number: B82Y30/00 C08K3/346 C08K2201/011 C08L23/06

    Abstract: A method for modifying a high-density polyethylene (HDPE)-clay nanocomposite is disclosed. The method comprises shearing a melt of the nanocomposite at an effective shear rate. The modified nanocomposite shows significantly increased complex melt viscosity, storage modulus, and loss modulus.

    Abstract translation: 公开了一种改性高密度聚乙烯(HDPE) - 粘土纳米复合材料的方法。 该方法包括以有效剪切速率剪切纳米复合材料的熔体。 改性的纳米复合材料显示出显着增加的复合熔体粘度,储能模量和损耗模量。

    Method for preparing propylene polymers having broad molecular weight distribution
    17.
    发明授权
    Method for preparing propylene polymers having broad molecular weight distribution 失效
    制备具有宽分子量分布的丙烯聚合物的方法

    公开(公告)号:US06800703B1

    公开(公告)日:2004-10-05

    申请号:US10686066

    申请日:2003-10-15

    CPC classification number: C08F110/06 C08F10/00 C08F4/6465 C08F2500/04

    Abstract: A method for producing propylene polymers having a broad molecular weight distribution (MWD) is disclosed. The method uses a Ziegler catalyst and one silane donor. The silane donor is selected from vinyltrimethoxysilane or dicyclohexyldimethoxysilane. The polymers made by the method have an MWD greater than or equal to 7.0.

    Abstract translation: 公开了具有宽分子量分布(MWD)的丙烯聚合物的制备方法。 该方法使用齐格勒催化剂和一种硅烷供体。 硅烷供体选自乙烯基三甲氧基硅烷或二环己基二甲氧基硅烷。 通过该方法制备的聚合物具有大于或等于7.0的MWD。

    Ethylene polymerization catalyst and catalyst system
    18.
    发明授权
    Ethylene polymerization catalyst and catalyst system 失效
    乙烯聚合催化剂和催化剂体系

    公开(公告)号:US06323148B1

    公开(公告)日:2001-11-27

    申请号:US09441801

    申请日:1999-11-17

    Inventor: Mark K. Reinking

    Abstract: An ethylene polymerization catalyst and catalyst system which provides an ethylene copolymer which is characterized by desirable ER shift values. The high level ER shift of these polymers produce films having high impact strength. The catalyst is prepared by treating a support material with an agent selected from the group consisting of a compound having the structural formula BX53, where X5 is fluorine, chlorine, bromine, iodine or OR5, where R5 is C1-C6 alkyl; a compound having the structural formula X62 where X6 is fluorine, bromine or iodine; a compound having the structural formula NR6, where R6 is C1-C6 alkyl or OR7, where R7 is C1-C8 alkyl; and a compound having the structural formula Ti(OR8)4, where R8 is C1-C6 alkyl or phenyl to reduced surface hydroxyl group concentration of the support material. The thus treated support material is thereupon contacted with a dialkylmagnesium compound or complex, an alcohol compound or a silane compound and a transition metal compound, in that order. Alternatively, the sequence of contact of the transition metal compound and the silane compound may be reversed, as may be the sequence of addition of the dialkylmagnesium compound or complex and the silane compound.

    Abstract translation: 提供乙烯共聚物的乙烯聚合催化剂和催化剂体系,其特征在于所需的ER转移值。 这些聚合物的高水平ER变化产生具有高冲击强度的膜。 通过用选自具有结构式BX53的化合物,其中X5是氟,氯,溴,碘或OR5的化合物处理载体材料来制备催化剂,其中R5是C1-C6烷基; 具有结构式X62的化合物,其中X 6是氟,溴或碘; 具有结构式NR 6的化合物,其中R 6是C 1 -C 6烷基或OR 7,其中R 7是C 1 -C 8烷基; 和具有结构式Ti(OR 8)4的化合物,其中R 8是C 1 -C 6烷基或苯基,以降低载体材料的表面羟基浓度。 随后将如此处理的载体材料依次与二烷基镁化合物或络合物,醇化合物或硅烷化合物和过渡金属化合物接触。 或者,过渡金属化合物和硅烷化合物的接触顺序可以相反,可以是二烷基镁化合物或络合物和硅烷化合物的添加顺序。

    Method for preparing a Ziegler-Natta catalyst
    19.
    发明授权
    Method for preparing a Ziegler-Natta catalyst 有权
    齐格勒 - 纳塔催化剂的制备方法

    公开(公告)号:US07935651B1

    公开(公告)日:2011-05-03

    申请号:US12658191

    申请日:2010-02-04

    Abstract: A method for preparing a titanium-containing Ziegler-Natta catalyst is disclosed. A dialkyl magnesium compound, a trialkyl aluminum compound, and a polymethylhydrosiloxane are first combined in a hydrocarbon solvent. That product is then combined with dry, alcohol-free magnesium chloride. A solid product from the reaction with the magnesium chloride component is isolated and washed with a hydrocarbon solvent. The washed solid product is then combined with an alkyl aluminum dichloride or a dialkyl aluminum chloride to give the catalyst. The catalyst is suitable for both slurry and gas-phase olefin polymerizations. Polyolefins produced with the catalyst have broad molecular weight distributions and narrow distributions of relatively large particles.

    Abstract translation: 公开了一种制备含钛齐格勒 - 纳塔催化剂的方法。 首先在烃溶剂中合并二烷基镁化合物,三烷基铝化合物和聚甲基氢硅氧烷。 然后将该产物与干燥的不含醇的氯化镁混合。 分离与氯化镁组分反应的固体产物,并用烃溶剂洗涤。 然后将洗涤的固体产物与二氯化烷基铝或二烷基氯化铝混合,得到催化剂。 该催化剂适用于淤浆和气相烯烃聚合。 用催化剂生产的聚烯烃具有较宽的分子量分布和较大颗粒的窄分布。

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