Back to results
US 8,013,177 B2Granted
Method and system for forming a precursor compound for non-bridged unsymmetric polyolefin polymerization catalyst
AssigneeChevron Phillips Chemical Company LP
InventorsQing Yang, Richard M. Buck, Rex E. Murray
Life of this patent
Estimating the term…
Abstract
The present techniques relates generally to polyolefin catalysts and, more specifically, to preparing a precursor compound for an unsymmetric metallocene catalyst, for using the precursor compound to prepare catalysts, and for employing the precursor compounds to prepare catalysts for polyolefin polymerizations.
Claims15
A catalyst precursor, comprising a general structure of:
- wherein
- M is Zr or Hf;
- each x is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- n is 1, 2, 3, 4, 5, 6, 7, or 8;
- each Y is independently a halide or NR2, wherein each R is independently a hydrocarbyl group having from 1 to 5 carbons;
- and
- each c is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons, or at least one c is conjoined with another c to form a ring.
4 more elements
A method for making a catalyst precursor, comprising:
- reacting a compound with M(NR2)4 to form a product, wherein:
- the compound has a general structure of:
- wherein:
- each x is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- and
- at least one x is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- each c is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- M is Ti, Zr, or Hf;
- each R is independently a hydrocarbyl group having from 1 to 5 carbons;
- and
- the product has a general structure of:
8 more elements
A method for making a catalyst precursor, comprising:
- reacting a compound with a group I or group II metallating agent to form a first product, wherein:
- the compound has a general structure of:
- wherein:
- each x is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- and
- at least one x is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- each c is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- and
- the metallating agent is a group I or group II metal, or is a group I or group II metal alkyl, hydrocarbyl, amide, alkoxide, aryloxide, hydride, borohydride, sulfide, selenide, phosphide or substituted variant thereof;
- and
- the first product has a general structure of:
- wherein
- A comprises the group I or group II metal;
- and
- reacting the first product with MY4Ln to form a catalyst precursor, wherein:
- M is Ti, Zr, or Hf;
- each Y is independently a halide or NR2, wherein each R is a hydrocarbyl group having from 1 to 5 carbons;
- at least one Y is a halide;
- and
- each L is a monodentate or multidentate neutral or zwitterionic donor including but not limited to ethers, cyclic ethers, amines, phosphines, nitriles, pyridines, thioethers and substituted variants thereof;
- n is 0 or 2;
- and
- the catalyst precursor has a general structure of:
20 more elements
A method for making a catalyst precursor, comprising:
- reacting a compound with HaSiR3 in the presence of a metal alkyl compound to form a first product, wherein:
- the compound has a general structure of:
- wherein:
- each x is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- at least one x is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- and
- at least one x is a hydrogen;
- each c is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- Ha is F, Cl, Br, or I;
- each R is independently a hydrocarbyl group having from 1 to 5 carbons;
- and
- the first product has a general structure of:
- wherein
- one z is R3Si—;
- each remaining z is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- at least one z is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- and
- reacting the first product with MY4 to form a catalyst precursor, wherein:
- M is Zr or Hf;
- each Y is independently a halide or NR2, wherein each R is a hydrocarbyl group having from 1 to 5 carbons;
- and
- the catalyst precursor has a general structure of:
- wherein:
- each w is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- one w is a hydrogen;
- and
- at least one w is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons.
24 more elements
A catalyst precursor, comprising a general structure of:
- wherein
- M is Ti, Zr, or Hf;
- each x is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- n is 1, 2, 3, 4, 5, 6, 7, or 8;
- each Y is independently a halide or NR2, wherein each R is independently a hydrocarbyl group having from 1 to 5 carbons;
- at least one Y is NR2;
- and
- each c is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons.
5 more elements
A method for making a catalyst precursor, comprising:
- reacting a compound with HaSiR3 in the presence of a metal alkyl compound to form a first product, wherein:
- the compound has a general structure of:
- wherein:
- each x is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- at least one x is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- at least one x is a hydrogen;
- each c is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- Ha is F, Cl, Br, or I;
- each R is independently a hydrocarbyl group having from 1 to 5 carbons;
- and
- the first product has a general structure of:
- wherein
- one z is R3Si—;
- each remaining z is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- and
- at least one z is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- and
- reacting the first product with MY4 to form a catalyst precursor, wherein:
- M is Ti, Zr, or Hf;
- each Y is independently a halide or NR2, wherein each R is a hydrocarbyl group having from 1 to 5 carbons;
- and
- the catalyst precursor has a general structure of:
- wherein:
- each w is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- one w is a hydrogen;
- at least one w is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- and
- at least one Y is NR2.
25 more elements
A catalyst precursor, comprising a general structure of:
- wherein n is 1, 2, 3, 4, 5, 6, 7, or 8.
A catalyst precursor, comprising a general structure of:
- wherein
- each x is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- at least one x is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- each R is independently a hydrocarbyl group having from 1 to 5 carbons;
- and
- each c is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons.
3 more elements
A method for making a catalyst precursor, comprising:
- reacting a compound with HaSiR3 in the presence of a metal alkyl compound to form a first product, wherein:
- the compound has a general structure of:
- wherein:
- each x is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- at least one x is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- at least one x is a hydrogen;
- each c is independently selected from a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- Ha is F, Cl, Br, or I;
- each R is independently a hydrocarbyl group having from 1 to 5 carbons;
- and
- the first product has a general structure of:
- wherein
- one z is R3Si—;
- each remaining z is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- and
- at least one z is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons;
- and
- reacting the first product with Ti(NR2)4 to form a catalyst precursor, wherein:
- each R is a hydrocarbyl group having from 1 to 5 carbons;
- and
- the catalyst precursor has a general structure of:
- wherein:
- each w is independently a hydrogen, alkyl, branched alkyl, cycloalkyl, aryl, or alkenyl group having from 2 to 20 carbons;
- one w is a hydrogen;
- at least one w is a terminal, branched, or internal alkenyl group having from 2 to 20 carbons.
22 more elements
Dependencies are inferred from the claim text.