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US 8,987,394 B2Granted
Catalyst compositions for the polymerization of olefins
AssigneeChevron Phillips Chemical Company LP
InventorsMark L. Hlavinka, Qing Yang, Youlu Yu
Life of this patent
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Abstract
Catalyst compositions containing N,N-bis[2-hydroxidebenzyl]amine transition metal compounds are disclosed. Methods for making these transition metal compounds and for using such compounds in catalyst compositions for the polymerization of olefins also are provided.
Claims20
An olefin polymerization process, the process comprising:
- contacting a catalyst composition with an olefin monomer and optionally an olefin comonomer under polymerization conditions to produce an olefin polymer, wherein the catalyst composition comprises:
- (i) an N,N-bis[2-hydroxidebenzyl]amine compound having formula (Ia):
- wherein:
- M is Ti, Zr, or Hf;
- X1 and X2 independently are a monoanionic ligand;
- each RB and Rc independently is a halide, a C1 to C36 hydrocarbyl group, a C1 to C36 halogenated hydrocarbyl group, a C1 to C36 hydrocarboxy group, or a C1 to C36 hydrocarbylsilyl group, wherein p and q independently are 0, 1, 2, 3, or 4;
- and
- RA is a C1 to C36 hydrocarbyl group or C1 to C36 halogenated hydrocarbyl group;
- (ii) an activator-support comprising a solid oxide treated with an electron-withdrawing anion;
- and
- (iii) optionally, a co-catalyst.
8 more elements
An olefin polymerization process, the process comprising:
- contacting a catalyst composition with an olefin monomer and optionally an olefin comonomer under polymerization conditions to produce an olefin polymer, wherein the catalyst composition comprises:
- (i) an N,N-bis[2-hydroxidebenzyl]amine compound having formula (Ib):
- wherein:
- M is Ti, Zr, or Hf;
- X1 and X2 independently are a monoanionic ligand;
- RB1, RB2, RC1, and RC2 independently are a halide, a C1 to C36 hydrocarbyl group, a C1 to C36 halogenated hydrocarbyl group, a C1 to C36 hydrocarboxy group, or a C1 to C36 hydrocarbylsilyl group;
- and
- RA is a C1 to C36 hydrocarbyl group or C1 to C36 halogenated hydrocarbyl group;
- (ii) an activator-support comprising a solid oxide treated with an electron- withdrawing anion;
- and
- (iii) optionally, a co-catalyst.
8 more elements
Dependencies are inferred from the claim text.