Patent application number | Description | Published |
20090042720 | Activating supports for metallocene catalysis - The present invention relates to a process for preparing an activating support for metallocene complexes in the polymerisation of olefins comprising the steps of: I) providing a support prepared consisting in particles formed from at least one porous mineral oxide; II) optionally fixing the rate of silanols on the surface of the support; III) functionalising the support with a solution containing a fluorinated functionalising agent; IV) heating the functionalised and fluorinated support of step c) under an inert gas and then under oxygen; V) retrieving an active fluorinated support. That activating support is used to activate a metallocene catalyst component for the polymerisation of olefins. | 02-12-2009 |
20090234085 | Nickel complexes in heterogeneous - The present invention discloses a supported catalyst system that comprises a supported Keim-type nickel complex. It further discloses a method for preparing said supported catalyst system and its use for homo- or co-polymerising polar and non polar monomers. | 09-17-2009 |
20090270578 | Catalytic system for obtaining conjugated diene/mono-olefin copolymers and these copolymers - A catalytic system usable for the copolymerization of at least one conjugated diene and at least one monoolefin, a process for preparing this catalytic system, a process for preparing a copolymer of a conjugated diene and at least one monoolefin using said catalytic system, and said copolymer are described. This catalytic system includes:
| 10-29-2009 |
20100010180 | Transition Metal Complexes Supported on Activating Support - The present invention discloses an active supported catalyst system comprising:
| 01-14-2010 |
20100022725 | Borohydride Metallocene Complex of a Lanthanide, Catalytic System Including Said Complex, Polymerization Method Using Same and Ethylene/Butadiene Copolymer Obtained Using Said Method - The present invention relates to a borohydride metallocene complex of a lanthanide, to its process of preparation, to a catalytic system incorporating it, to a process for the copolymerization of olefins employing this catalytic system and to an ethylene/butadiene copolymer obtained by this process, the butadiene units of which comprise 1,2-cyclohexane or 1,2- and 1,4-cyclohexane links. | 01-28-2010 |
20100029468 | Controlled Distribution of Active Sites in Ziegler-Natta Catalyst Systems - The present invention provides a method for improving and controlling the activity of Ziegler-Natta catalyst systems. | 02-04-2010 |
20100056736 | Controlled Distribution of Stereospecific Sites in Ziegler-Natta Catalyst Systems - This invention relates to an improved method for improving the tacticity of Ziegler-Natta catalyst systems and for controlling the behaviour of the active stereospecific sites. | 03-04-2010 |
20100179055 | ACTIVATING SUPPORTS WITH NON-METALLOCENE COMPLEXES - The present invention discloses an active supported catalyst system comprising: a) an iron-based non-metallocene catalyst component; b) an alkylating agent; c) an activating functionalised and fluorinated support. It also discloses a method for preparing said active supported catalyst system and its use in the polymerisation of olefins. | 07-15-2010 |
20120101239 | ACTIVATING SUPPORTS WITH CONTROLLED DISTRIBUTION OF OH GROUPS - The present invention relates to a process for preparing an activating support for metallocene complexes in the polymerisation of olefins comprising the steps of:
| 04-26-2012 |
20120142905 | Borohydride Metallocene Complex of a Lanthanide, Catalytic System Including Said Complex, Polymerization Method Using Same and Ethylene/Butadiene Copolymer Obtained Using Said Method - Borohydride metallocene complex of lanthanide, preparation process, catalytic system incorporating borohydride metallocene complex, process for copolymerization of olefins employing catalytic system. The complex corresponds to one or other of formulae A and B: | 06-07-2012 |
20120149858 | Controlled Distribution of Active Sites in Ziegler-Natta Catalyst Systems - The present invention provides a method for improving and controlling the activity of Ziegler-Natta catalyst systems. | 06-14-2012 |
20120165492 | Borohydride Metallocene Complex of a Lanthanide, Catalytic System Including The Said Complex, Polymerisation Method Using Same and Ethylene/Butadiene Copolymer Obtained using Said Method - Borohydride metallocene complex of lanthanide, preparation process, catalytic system incorporating it, copolymerization of olefins employing catalytic system and ethylene/butadiene copolymer, the butadiene units comprise 1,2-cyclohexane or 1,2- and 1,4-cyclohexane links. The complex corresponds to of formulae | 06-28-2012 |
20130158215 | MODIFIED ZIEGLER-NATTA CATALYST SYSTEMS - This invention relates to modified Ziegler-Natta catalyst systems that have an excellent activity in homo- or co-polymerisation of ethylene and alpha-olefins and are able to produce polymers having reduced molecular weight distribution and improved incorporation of hexene with respect to conventional Ziegler-Natta catalyst systems. | 06-20-2013 |
20130274429 | ACTIVATING SUPPORTS - Activating supports may be suitably prepared by the following procedure (a) providing a porous mineral oxide support material, (b) treating the support with a phosphorus-containing compound, (c) treating the support from step (b) with an organometallic compound, (d) heating the functionalized support from step (c) under an inert gas and then under an atmosphere comprising oxygen, (e) fluorinating the support with a fluorinating agent, and (f) recovering an activating support. The activating supports are suitable used in combination with single site catalysts for the polymerization of olefins. The supports are most preferably used in combination with metallocene complexes. The preparative route for the activating supports provides for supported polymerization catalyst systems having excellent activities. | 10-17-2013 |