Total Research & Technology Feluy

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Totalenergies Onetech Belgium

Alexandre Welle

Aurélien Vantomme

Martine Slawinski

Virginie Cirriez

Jeroen Wassenaar

Olivier Lhost

Christopher Willocq

Julien Sanson

Pierre Bernard

Marion Courtiade

Aurelien Vantomme

The present invention relates to a polyethylene resin prepared using a continuous process having and at least one metallocene catalyst composition: The present invention also relates to articles comprising said polyethylene resin as well as process for preparing said resin.

Polyethylene resins

The present invention relates to a catalyst composition comprising: The present invention also relates to a polymerization process using said composition. The invention further relates to olefin polymers at least partially catalyzed by said catalyst composition and articles comprising said olefin polymers.

Dual catalyst composition

A propylene-comonomer block copolymer may have a molecular weight distribution Mw/Mn of at least 1.7, a percentage of enthalpy measured between Ti and [Tm&#x2212;18&#xb0; C.] of at least 20% of the total enthalpy, and a ratio E1/Co of at least 0.80. The propylene-comonomer block copolymer may be produced by polymerizing propylene in the presence of at least one comonomer and a bridged metallocene catalyst. The bridged metallocene catalyst may include bridged fluorenyl, bridged indenyl metallocene, or any combination thereof. The propylene-comonomer block copolymer may be used as a heat seal layer for biaxially oriented multi-layer films.

Propylene copolymer for BOPP heat seal film layers

A low viscosity oil has more than 50% by weight of 9-methylnonadecane. A lubricating composition has this low viscosity oil as base oil and, optionally, another base oil or an additive. The low viscosity oil has a kinematic viscosity at 100&#xb0; C., measured by the ASTM D445 standard, of 0.5 to 2.5 mms. The low viscosity oil can be prepared using a metallocene catalyst, and the low viscosity oil can be used as high performance lubricant for lubrication in the field of motors, hydraulic fluids and gears, in particular bridges and transmissions.

Low viscosity lubricating polyolefins

Processes for preparing a polyethylene in at least one continuously stirred tank reactor are described herein. The process may comprise the step of: polymerizing ethylene in the presence of at least one supported metallocene catalyst, a diluent, optionally one or more co-monomers, and optionally hydrogen, thereby obtaining the polyethylene, wherein the supported metallocene catalyst comprises a solid support, a co-catalyst and at least one metallocene, wherein the solid support has a surface area within the range of from 100 to 500 m2/g, and has a D50 value within the range of from 4 &#x3bc;m to 18 &#x3bc;m, with D50 being defined as the particle size for which fifty percent by weight of the particles has a size lower than the D50; and D50 being measured by laser diffraction analysis on a Malvern type analyzer. Polyethylene obtained by the disclosed process and articles comprising the polyethylene are also described.

Process for preparing a polyethylene in at least one continuously stirred tank reactor

A process may include contacting an olefin monomer and a racemic bridged metallocene catalyst at a temperature of 80&#xb0; C. to 150&#xb0; C. in the presence of hydrogen. The racemic bridged metallocene catalyst may include a metallocene compound (A) and an activator component (B). The process may include recovering an effluent containing polyalpha-olefins (PAOs). The metallocene compound (A) may be represented by the formula R(Cp)(Cp)MXX. In the formula, R may be a C-Calkylene bridging group; Cpand Cpmay be the same or different substituted or unsubstituted tetrahydroindenyl rings; M may be a transition metal; and Xand Xmay be independently selected from hydrogen, halogen, hydride radicals, hydrocarbyl radicals, substituted hydrocarbyl radicals, halocarbyl radicals, substituted halocarbyl radicals, silylcarbyl radicals, substituted silylcarbyl radicals, germylcarbyl radicals, substituted germylcarbyl radicals.

Growing community of inventors

Court-St-Etienne, Belgium

Alexandre Welle