Process for producing liquid polyalphaolefin polymer,...

C - Chemistry – Metallurgy – 08 – F

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C08F 10/14 (2006.01) C08F 4/642 (2006.01) C08F 10/00 (2006.01) C10M 143/08 (2006.01) C08F 4/659 (2006.01) C08F 110/14 (2006.01) C08F 210/14 (2006.01)

Patent

CA 2416894

A liquid polyalphaolefin homo- or copolymer, preferably 1-decene, which is substantially amorphous is obtained by a polymerization process employing hydrogen and a particular type of metallocene catalyst. Additionally, liquid polyalphaolefin homo- or copolymer containing from 2 to about 12 carbon carbon atoms possess a unique combination of properties, i.e., low molecular weight (Mw), low polydispersity index (Mx/Mn), controllable kinematic viscosity (Kv100), low Iodine Number (I2) and low glass transition temperature (Tg) and are substantially amorphous. The liquid polyalphaolefin homo- or copolymers provided herein are useful for manufacturing a variety of products including lubricating oils in which the polyalphaolefin functions as a viscosity modifier.

L'invention concerne un homo- ou copolymère polyalphaoléfine liquide, de préférence, 1-decène, sensiblement amorphe, obtenu par polymérisation à l'aide d'hydrogène et un type particulier de catalyseur métallocène. De plus, les homo- ou copolymères polyalphaoléfines liquides contenant de 2 à environ 12 atomes de carbone présentent une combinaison de propriétés unique, c'est-à-dire, un poids moléculaire peu élevé (M¿w?), un indice de polydispersité faible (M¿x?/M¿n?), une viscosité cinématique ajustable (Kv¿100?), un indice d'iode faible (I¿2?) et une température de transition vitreuse peu élevée (T¿g?) et ils sont sensiblement amorphes. Ces homo- ou copolymères sont utiles pour la fabrication d'une variété de produits, y compris les huiles lubrifiantes, dans lesquels la polyalphaoléfine fonctionne comme un agent modificateur de la viscosité.

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