Patent classifications
C
CHEMISTRY; METALLURGY
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C08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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C08F4/42
Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
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C08F4/44
selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
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C08F4/60
together with refractory metals, iron group metals, platinum group metals, manganese, rhenium; technetium; or compounds thereof
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C08F4/62
Refractory metals or compounds thereof
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C08F4/64
Titanium, zirconium, hafnium or compounds thereof
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C08F4/64003
the metallic compound containing a multidentate ligand, i.e. a ligand capable of donating two or more pairs of electrons to form a coordinate or ionic bond
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C08F4/64075

Phosphoramidate catalysts for ethylene-based interpolymers
11168155 · 2021-11-09 · ·

Catalyst systems contain metal-ligand complexes according to formula (I): In formula (I), M is Ti, Zr, of Hf; n is 0, 1, 2, or 3; m is 1 or 2; each R.sup.1 and each R.sup.2 is independently chosen from (C.sub.1-C.sub.40)hydrocarbyl, (C.sub.1-C.sub.40)heterohydrocarbyl, (C.sub.1-C.sub.40)aryl, (C.sub.1-C.sub.40)heteroaryl, halogen, and —H; R.sup.1 and R.sup.2 are optionally covalently linked to each other; and each R.sup.3 is a hydrocarbon or heterohydrocarbon radical having an identity depending on the value of subscript m. The metal-ligand complexes may be incorporated as procatalysts in catalyst systems for polyolefin polymerization. ##STR00001##

PHOSPHORAMIDATE CATALYSTS FOR ETHYLENE-BASED INTERPOLYMERS
20200010582 · 2020-01-09 · ·

Catalyst systems contain metal-ligand complexes according to formula (I): In formula (I), M is Ti, Zr, of Hf; n is 0, 1, 2, or 3; m is 1 or 2; each R.sup.1 and each R.sup.2 is independently chosen from (C.sub.1-C.sub.40)hydrocarbyl, (C.sub.1-C.sub.40)heterohydrocarbyl, (C.sub.1-C.sub.40)aryl, (C.sub.1-C.sub.40)heteroaryl, halogen, and H; R.sup.1 and R.sup.2 are optionally covalently linked to each other; and each R.sup.3 is a hydrocarbon or heterohydrocarbon radical having an identity depending on the value of subscript m. The metal-ligand complexes may be incorporated as procatalysts in catalyst systems for polyolefin polymerization.

##STR00001##