专利号:US-11498985-B2 优先权日:2017-04-18 标题:Continuous synthesis of an ethylene and butadiene copolymer 发明人:THUILLIEZ JULIEN; PACHECO NUNO 权利人:MICHELIN & CIE 摘要:A process for the synthesis of an ethylene/butadiene copolymer is provided. The process is continuous and comprises the following steps:n a. feeding at least one stirred polymerization reactor with a mixture of ethylene, butadiene, hydrocarbon-based solvent and catalytic system allowing the formation of cyclic trans-1,2-cyclohexane units in the polymer chain with a mole ratio of ethylene to the sum of the ethylene and butadiene monomers ranging from 0.5 to 0.99; the concentration of ethylene and butadiene monomers in the polymerization reaction medium being less than 15% by weight; the operating pressure of the reactor is greater than or equal to the saturated vapour pressure of the polymerization reaction medium; and the polymerization temperature is greater than 90° C.; b. recovering the ethylene/butadiene copolymer, this copolymer comprising, statistically distributed, ethylene units, butadiene units and trans-1,2-cyclohexane units, the molar fraction of ethylene units in the copolymer being greater than or equal to 50%.
专利号:US-11136422-B2 优先权日:2017-04-18 标题:Continuous synthesis of an ethylene and butadiene copolymer 发明人:THUILLIEZ JULIEN; PACHECO NUNO 权利人:MICHELIN & CIE 摘要:A process for the synthesis of an ethylene/butadiene copolymer is provided. The process is continuous and comprises: n a. feeding at least one stirred polymerization reactor with a mixture of ethylene, butadiene, hydrocarbon-based solvent and catalytic system allowing the formation of cyclic trans-1,2-cyclohexane units in the polymer chain with a mole ratio of ethylene to the sum of the ethylene and butadiene monomers ranging from 0.5 to 0.99; the concentration of ethylene and butadiene monomers in the polymerization reaction medium being at least 10% by weight relative to the total weight; the operating pressure of the reactor is greater than or equal to the saturated vapour pressure of the polymerization reaction medium; n b. recovering the ethylene/butadiene copolymer, this copolymer comprising, statistically distributed, ethylene units, butadiene units and trans-1,2-cyclohexane units, the molar fraction of ethylene units in the copolymer being greater than or equal to 50%.
专利号:US-5166110-A 优先权日:1989-12-22 标 题 :Process for the synthesis of ziegler-type catalytic solids or solid constituents of the same 发明人:BRUN CLAUDE 权利人:ATOCHEM ELF SA 摘要:A process is provided for the synthesis of a solid Ziegler catalyst or of a transition metal solid constituent thereof, which entails preparing the solid catalyst or constituent thereof as a suspension in an inert liquid medium by contacting precursors or ingredients of the catalyst or of the constituent in the inert liquid medium in one or more steps, and drying the suspension, and collecting the catalyst or constituent thereof; and wherein the process is conducted in a single multi-function reactor having a longitudinal axis and which can pivot around an axis which intersects perpendicularly with this axis.
专利号:WO-2023237381-A1 优先权日:2022-06-09 标题:Process for the synthesis of polyethylenes or copolymers of ethylene and 1,3-diene having a terminal ketone function 发明人:BOISSON CHRISTOPHE; D'AGOSTO FRANCK; DESGRANGES ARIANE; NGO ROBERT; JEAN-BAPTISTE-DIT-DOMINIQUE FRANÇOIS 权利人:MICHELIN & CIE; CENTRE NAT RECH SCIENT; ECOLE SUPERIEURE DE CHIMIE PHYSIQUE ELECTRONIQUE LYON; UNIV CLAUDE BERNARD LYON 摘要:The invention relates to a method for preparing a polyethylene having a terminal ketone function or a copolymer of ethylene and a 1,3-diene and optionally a vinyl aromatic compound which contains more than 50 mol% of ethylene and has a terminal ketone function; said method comprises a polymerization reaction of the monomers in the presence of a borohydrido-neodymocene complex and an organo-magnesium compound, followed by a coupling reaction with a compound having a nitrile function, and then a hydrolysis reaction.
专利号:US-5190498-A 优先权日:1989-12-22 标 题 :Magnetic drive system for reactor used in the synthesis of Ziegler-type catalytic solids or solid constituents of the same 发明人:BRUN CLAUDE 权利人:ATOCHEM ELF SA 摘要:A magnetic drive system in a reactor generates rotational and translational motion of the agitator. The magnetic drive system includes a tubular shaft having one end attached to the agitator, and another end. A magnetic annular weight is fitted to the another end. A guide column has an end supported by the reactor body and a free end, the guide column further having a cylindrical bore in which an intermediate part of the tubular shaft slides in a fluid tight manner. A cylindrical guide cap is fluid tightly mounted to the free end of the guide column, the guide cap covering the magnetic annular weight and incorporating a cylindrical guide shaft integral with a bottom of the cap, the tubular shaft sliding coaxially and fluid tightly on the guide shaft. A drive rotor covers the guide cap and has another annular magnetic weight enclosing the guide cap and positioned with respect to the annular weight fitted to the tubular shaft such that a rotational or translational movement of the drive rotor generates a corresponding movement of a tubular shaft and the agitator. A motor is connected to the drive rotor for driving the rotor about an axis coaxial with the axis of the reactor body.
专利号:US-11326001-B2 优先权日:2018-03-19 标题:Copolymer of ethylene and of myrcene 发明人:LAFAQUIERE VINCENT; MORESO EMMA 权利人:MICHELIN & CIE 摘要:A copolymer of ethylene and of myrcene, in which the ethylene units represent between 50 mol % and 95 mol % of the ethylene units and of the myrcene units, and the myrcene units of 1,2 and 3,4 configuration represent more than 50 mol % of the myrcene units, is provided. Such a copolymer exhibits an improved compromise between the degree of crystallinity and the stiffness. It therefore makes it possible to widen the field of application of ethylene-rich diene copolymers in rubber compositions, and also to increase the production capacity of a unit for the synthesis of ethylene-rich diene polymers.
参考标题:Facile Synthesis Of Lanthanidocenes By The "Borohydride/alkyl Route" And Their Application In Isoprene Polymerization 作者:Marc Visseaux,Michael Terrier,André Mortreux,Pascal Roussel |发布日期:2010.6 摘要:Was Isolated As A Byproduct And Structurally Characterized, Revealing An Unprecedented Structural Arrangement. In Combination With Bem, Complexes 2A, 3A, And 4A Were Found To Be Efficient In Isoprene Polymerization To Afford Highly Stereoregular Trans-Polyisoprene. Similar Results Were Obtained By An "All In Situ" Approach Starting From Nd(Bh 4 ) 3 (Thf) 3 /bem Mixtures In The Presence Of 2 Equiv. Of