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    • 1. 发明申请
    • Polymerization process in the presence of an antistatic agent
    • 在抗静电剂存在下的聚合过程
    • US20120283369A1
    • 2012-11-08
    • US13514968
    • 2010-12-16
    • Lars KoellingShahram MihanGerhardus Meier
    • Lars KoellingShahram MihanGerhardus Meier
    • C08L81/06C08K5/42
    • C08F10/00C08F110/02C08F2/005C08F2500/12C08F2500/04
    • Process for the polymerization of olefins at temperatures of from −20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst and an antistatic agent, wherein the antistatic agent is an antistatically acting composition comprising a polysulfone copolymer, a polymeric compound comprising basic nitrogen atoms, an oil-soluble sulfonic acid and optionally a solvent and the polysulfone copolymer, the polymeric compound comprising basic nitrogen atoms and the oil-soluble sulfonic acid constitute together at least 1 wt. % of the antistatically acting composition, and wherein the antistatically acting composition, when contacted as solution or suspension in heptane, wherein the solution or suspension has a concentration of about 80 g of the antistatically acting composition per liter of heptane, with a 2 M solution of triethylaluminum in heptane at 0° C., generates less than 5 cm3, measured at 23° C. and atmospheric pressure, of ethane per gram of the antistatically acting composition and use of an antistatically acting composition as antistatic agent for the polymerization of olefins at temperatures of from −20 to 200° C. and pressures of from 0.1 to 20 MPa in the presence of a polymerization catalyst.
    • 在聚合催化剂和抗静电剂存在下,在-20至200℃的温度和0.1至20MPa的压力下烯烃的聚合方法,其中抗静电剂是包含聚砜共聚物 ,包含碱性氮原子的聚合化合物,油溶性磺酸和任选的溶剂和聚砜共聚物,包含碱性氮原子的聚合化合物和油溶性磺酸一起构成至少1重量% %的抗静电作用组合物,并且其中所述抗静电作用组合物当作为溶液或悬浮液在庚烷中接触时,其中所述溶液或悬浮液的浓度为每升庚烷约80g抗静电作用组合物,与2M溶液 的三乙基铝在庚烷中在0℃下产生小于5cm 3,在23℃和大气压下测量每克抗静电作用组合物的乙烷和抗静电作用组合物的用作抗静电剂用于烯烃聚合 在-20至200℃的温度和0.1至20MPa的压力下,在聚合催化剂存在下进行。
    • 5. 发明申请
    • Method for Transitioning Between Incompatible Olefin Polymerization Catalyst Systems
    • 不相容的烯烃聚合催化剂体系的转化方法
    • US20110294957A1
    • 2011-12-01
    • US13133803
    • 2009-12-17
    • Gerhardus MeierShahram Mihan
    • Gerhardus MeierShahram Mihan
    • C08F255/00C08F4/64C08F2/34C08F4/24
    • C08F210/16C08F4/65912C08F4/65916C08F4/65925C08F10/00C08F2410/05C08F4/69C08F4/642C08F2/34C08F2/42C08F210/08C08F210/14C08F2500/12C08F2500/18C08F2500/07C08F4/7042C08F4/61904
    • A method for transitioning from a Ziegler-Natta to a Phillips catalyst system for the olefin polymerization reaction in one reactor, preferably a gas phase reactor, is described. The method comprises the steps of a) discontinuing a first olefin polymerization reaction performed in the presence of the Ziegler-Natta catalyst system; b) performing a second olefin polymerization reaction in the presence of a further catalyst system comprising catalyst components (A) and (B) producing, respectively, a first and a second polyolefin fraction, wherein the Mw of the first polyolefin fraction is less than the Mw of the second polyolefin fraction and the initial activity of catalyst component (A) exceeds the initial activity of catalyst component (B); and c) performing a third olefin polymerization reaction the presence of the Phillips catalyst system. Thanks to this method, there is no need to empty the reactor after each olefin polymerization reaction, and the transitioning time needed to attain the desired quality of the polyolefin obtained in each olefin polymerization reaction subsequent to the first one is sufficiently short to permit a quick and reliable change of production.
    • 描述了在一个反应​​器,优选气相反应器中从齐格勒 - 纳塔过渡到用于烯烃聚合反应的菲利普斯催化剂体系的方法。 该方法包括以下步骤:a)停止在齐格勒 - 纳塔催化剂体系存在下进行的第一种烯烃聚合反应; b)在另外的催化剂体系存在下进行第二烯烃聚合反应,所述催化剂体系包含分别产生第一和第二聚烯烃部分的催化剂组分(A)和(B),其中第一聚烯烃部分的Mw小于 第二聚烯烃级分的Mw和催化剂组分(A)的初始活性超过催化剂组分(B)的初始活性; 和c)进行第三烯烃聚合反应的存在的菲利浦催化剂体系。 由于这种方法,在每个烯烃聚合反应之后不需要清空反应器,并且在第一个烯烃聚合反应之后获得的每个烯烃聚合反应中获得的聚烯烃所需的质量所需的转化时间足够短,以使快速 可靠的生产变更。