Back to results
US 11,738,334 B2Granted
Supported catalyst systems and processes for use thereof
AssigneeExxonMobil Chemical Patents Inc.
InventorsMatthew W. Holtcamp, Dongming Li, Kevin A. Stevens, Jo Ann M. Canich, John R. Hagadorn, Ramyaa Mathialagan, Timothy M. Boller
Life of this patent
Estimating the term…
Abstract
This invention relates to a supported catalyst system comprising: (i) at least one first catalyst component comprising a group 4 bis(phenolate) complex; (ii) at least one second catalyst component comprising a 2,6-bis(imino)pyridyl iron complex; (iii) activator; and (iv) support. The catalyst system may be used for preparing polyolefins, such a bimodal polyethylene, typically in a gas phase polymerization.
Claims20
A supported catalyst system comprising:
- (i) at least one first catalyst a component comprising a tridentate complex;
- (ii) at least one second catalyst component comprising a 2,6-bis(imino)pyridyl iron complex;
- (iii) activator;
- and (iv) support;
- wherein,
- a tridentate complex is represented by Formula (A):
- wherein:
- M is a group 3-6 transition metal or Lanthanide;
- E and E′ are each independently O, S, or NR9, where R9 is independently hydrogen, C1-C40 hydrocarbyl, C1-C40 substituted hydrocarbyl, or a heteroatom-containing group;
- a Q is group 15, or 16 atom that forms a dative bond to metal M;
- A1QA1′ are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2′ via a 3-atom bridge with Q being the central atom of the 3-atom bridge, A1 and A1′ are independently C, N, or C(R22), where R22 is selected from hydrogen, C1-C20 hydrocarbyl, C1-C20 substituted hydrocarbyl;
- A3A2 is a divalent group containing 2 to 40 non-hydrogen atoms that links A1 to the E-bonded aryl group via a 2-atom bridge;
- A2′A3′ is a divalent group containing 2 to 40 non-hydrogen atoms that links A1′ to the E′-bonded aryl group via a 2-atom bridge;
- L is a neutral Lewis base;
- X is an anionic ligand;
- n is 1, 2 or 3;
- m is 0, 1, or 2;
- n+m is not greater than 4;
- each of R1*, R2*, R3*, R4*, R1′, R2′, R3′, and R4′ is independently hydrogen, C1-C40 hydrocarbyl, C1-C40 substituted hydrocarbyl, a heteroatom or a heteroatom-containing group, or one or more of R1* and R2*, R2* and R3*, R3* and R4*, R1′ and R2′, R2′ and R3′, R3′ and R4′ are optionally joined to form one or more substituted hydrocarbyl rings, unsubstituted hydrocarbyl rings, substituted heterocyclic rings, or unsubstituted heterocyclic rings each having 5, 6, 7, or 8 ring atoms, and where substitutions on the ring optionally join to form additional rings;
- any two L groups are optionally joined together to form a bidentate Lewis base;
- an X group is optionally joined to an L group to form a monoanionic bidentate group;
- any two X groups are optionally joined together to form a dianionic ligand group;
- and
- the 2,6-bis(imino)pyridyl iron complex is represented by Formula (I):
- wherein:
- each of R1 and R2 is independently hydrogen, C1-C22 alkyl, C2-C22 alkenyl, C6-C22 aryl, arylalkyl wherein alkyl has from 1 carbon atom to 10 carbon atoms and aryl has from 6 carbon atoms to 20 carbon atoms, or five-, or six-, or seven-membered heterocyclic ring comprising at least one atom selected from the group consisting of N, P, O and S;
- wherein each of R1 and R2 is optionally substituted by halogen, —OR16, —NR172, or —SiR183;
- wherein R1 optionally bonds with R3, and R2 optionally bonds with R5, in each case to independently form a five-, six-, or seven-membered ring;
- each of R3, R4, R5, R8, R9, R10, R13, R14, and R15 is independently hydrogen, C1-C22 alkyl, C2-C22 alkenyl, C6-C22 aryl, arylalkyl wherein alkyl has from 1 to 10 carbon atoms and aryl has from 6 to 20 carbon atoms, —OR16, —NR172, halogen, —SiR183 or five-, six- or seven-membered heterocyclic ring comprising at least one atom selected from the group consisting of N, P, O and S;
- wherein R3, R4, R5, R8, R9, R10, R13, R14, and R15 are optionally substituted by halogen, —OR16, —NR172 or —SiR183;
- wherein R3 optionally bonds with R4, R4 optionally bonds with R5, R7 optionally bonds with R10, R10 optionally bonds with R9, R9 optionally bonds with R8, R8 optionally bonds with R6, R15 optionally bonds with R14, R14 optionally bonds with R13, and R13 optionally bonds with R11, in each case to independently form a five-, six- or seven-membered carbocyclic or heterocyclic ring, the heterocyclic ring comprising at least one atom from the group consisting of N, P, O and S;
- each of R6, R7, R11, and R12 is independently hydrogen, C1-C22 alkyl, C2-C22 alkenyl, C6-C22 aryl, arylalkyl wherein alkyl has from 1 to 10 carbon atoms and aryl has from 6 to 20 carbon atoms, a heteroatom or a heteroatom-containing group;
- wherein R6, R7, R11, and R12 are optionally substituted by halogen, —OR16, —NR172 or —SiR183, wherein R6 optionally bonds with R8, R11 optionally bonds with R13, or R15 optionally bonds with R12 in each case to independently form a five-, six- or seven-membered carbocyclic or heterocyclic ring, the heterocyclic ring comprising at least one atom from the group consisting of N, P, O and S;
- wherein at least one of R6, R7, R11, and R12 is independently a heteroatom or a heteroatom-containing group, or at least one of the R6, R7, R11, and R12 is not methyl, or when R11 is H and R12 is iPr, then at least one of R6 and R7 is not methyl;
- each of R16, R17, and R18 is independently hydrogen, C1-C22 alkyl, C2-C22 alkenyl, C6-C22 aryl, arylalkyl where alkyl has from 1 to 10 carbon atoms and aryl has from 6 to 20 carbon atoms, or —SiR193, wherein each R16, R17, and R18 is independently optionally substituted by halogen, or two R16 radicals optionally bond to form a five- or six-membered ring, or two R17 radicals optionally bond to form a five- or six-membered ring, or two R18 radicals optionally bond to form a five- or six-membered ring;
- each R19 is independently hydrogen, C1-C22 alkyl, C2-C22 alkenyl, C6-C22 aryl, arylalkyl where alkyl has from 1 to 10 carbon atoms and aryl has from 6 to 20 carbon atoms, or two R19 radicals optionally bond to form a five- or six-membered ring;
- each of E1, E2, and E3 is independently carbon, nitrogen or phosphorus;
- each of u1, u2, and u3 is independently 0 when E1, E2, or E3 is nitrogen or phosphorus, and each of u1, u2, and u3 is independently 1 when E1, E2, or E3 is carbon;
- each of X1 and X2 is independently a substituted hydrocarbyl, and the radicals X are optionally bonded with one another;
- r is 1 or 2;
- s is 1 or 2;
- D is a neutral donor;
- and
- t is 0 to 2.
41 more elements
Dependencies are inferred from the claim text.