[EN] ANSA-BIS(INDEN-2-YL) CATALYSTS FOR PRODUCING VINYLIDENE-TERMINATED POLYALPHAOLEFINS [FR] CATALYSEURS ANSA-BIS (INDÈNE-2-YL) POUR LA PRODUCTION DE POLYALPHAOLÉFINES À TERMINAISON VINYLIDÈNE
[EN] ANSA-BIS(INDEN-2-YL) CATALYSTS FOR PRODUCING VINYLIDENE-TERMINATED POLYALPHAOLEFINS<br/>[FR] CATALYSEURS ANSA-BIS (INDÈNE-2-YL) POUR LA PRODUCTION DE POLYALPHAOLÉFINES À TERMINAISON VINYLIDÈNE
申请人:EXXONMOBIL CHEMICAL PATENTS INC
公开号:WO2021173361A1
公开(公告)日:2021-09-02
Metallocene complexes represented by structure (I) are useful for alpha olefin oligomerization in the presence of an activator to generate polyalphaolefins having a high percentage of vinylidene termination and relatively low Mn values. M is a group 4 transition metal. A is a bridging group having one bridging atom extending between a first indenyl ring and a second indenyl ring. Each X is independently an anionic ligand, or two Xs are joined and bound to M to form a metallocycle ring, or two Xs are joined to form a chelating ligand, a diene ligand, or an alkylidene ligand. R1, R1', R3, R3', R4, R4', R7 and R7' are hydrogen. R5, R5', R6, and R6' are independently a C1-C10, optionally substituted, hydrocarbyl group, or R5 and R6 and/or R5' and R6' are bonded together to form an optionally substituted hydrocarbyl ring structure.