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US 8,791,217 B2Granted
Catalyst systems for production of alpha olefin oligomers and polymers
AssigneeChevron Phillips Chemical Company LP
InventorsMark L. Hlavinka, Qing Yang, Brooke L. Small, Youlu Yu
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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 or oligomerization of alpha olefins also are provided.
Claims18
A catalyst composition comprising:
- (i) an N,N-bis[2-hydroxidebenzyl]amine compound having formula (IIa):
- 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
- L is a C1 to C18 hydrocarbylene group;
- and
- D is a chemical group comprising at least one of nitrogen, oxygen, phosphorus, and sulfur;
- (ii) an activator-support comprising a solid oxide treated with an electron-withdrawing anion;
- and
- (iii) optionally, a co-catalyst.
9 more elements
A process for producing a product, the process comprising:
- contacting a catalyst composition and an alpha olefin monomer comprising a C4 to C60 alpha olefin to produce the product, the catalyst composition comprising:
- (i) an N,N-bis[2-hydroxidebenzyl]amine compound having formula (IIa):
- 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
- L is a C1 to C18 hydrocarbylene group;
- and
- D is a chemical group comprising at least one of nitrogen, oxygen, phosphorus, and sulfur;
- (ii) an activator-support comprising a solid oxide treated with an electron-withdrawing anion;
- and
- (iii) optionally, a co-catalyst.
10 more elements
Dependencies are inferred from the claim text.