Binuclear olefin polymerization activators
US-2021147592-A1 · May 20, 2021 · US
US12565508B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12565508-B2 |
| Application number | US-202217930274-A |
| Country | US |
| Kind code | B2 |
| Filing date | Sep 7, 2022 |
| Priority date | Jan 31, 2020 |
| Publication date | Mar 3, 2026 |
| Grant date | Mar 3, 2026 |
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
What the patent document calls the invention.
A short plain-language summary of the technical disclosure.
Who owns or filed the patent and who is credited as inventor.
Filing, priority, publication, and grant dates set the timeline.
The legal scope of protection — read this for what is actually claimed.
Technology tags used to group this patent with similar filings.
Prior art links and similar publications in this corpus.
Official abstract text for this publication.
Embodiments of this disclosure are directed to catalyst systems comprising a metal-ligand complex according to formula (I):
Opening claim text (preview).
The invention claimed is: 1 . An olefin propagating catalytic species according to formula (Ia): where: M is scandium, yttrium, or a lanthanide metal having an oxidation state of +3; X P is a ligand chosen from hydrocarbyl, wherein the hydrocarbyl is branched or unbranched having at least 30 carbon atoms; each Z is independently chosen from —O—, —S—, —N(R N )—, or —P(R P )—, wherein the dotted line optionally defines a dative bond; R 1 and R 16 are independently selected from the group consisting of (C 1 -C 40 ) hydrocarbyl, (C 1 -C 40 ) heterohydrocarbyl, —Si(R C ) 3 , —Ge(R C ) 3 , —P(R P ) 2 , —N(R N ) 2 , —OR C , —SR C , —NO 2 , —CN, —CF 3 , R C S(O)—, R C S(O) 2 —, —N═C(R C ) 2 , R C C(O)O—, R C OC(O)—, R C C(O)N(R)—, (R C ) 2 NC(O)—, or halogen; R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , and R 15 are independently selected from —H, (C 1 -C 40 ) hydrocarbyl, (C 1 -C 40 ) heterohydrocarbyl, —Si(R C ) 3 , —Ge(R C ) 3 , —P(R P ) 2 , —N(R N ) 2 —OR C , —SR C , —NO 2 , —CN, —CF 3 , R C S(O)—, R C S(O) 2 —, (R C ) 2 C═N—, (R C ) 2 P═N—, R C C(O)O—, R C OC(O)—, R C C(O)N(R)—, (R C ) 2 NC(O)—, and halogen; provided that when M is yttrium or a lanthanide metal, R 1 is not —H, phenyl or tert-butyl; and R 16 is not —H, phenyl or tert-butyl; L is (C 1 -C 40 ) hydrocarbylene or (C 1 -C 40 ) heterohydrocarbylene; and each R C , R P , and R N is independently a (C 1 -C 30 ) hydrocarbyl, (C 1 -C 30 ) heterohydrocarbyl, or —H. 2 . The olefin propagating catalytic species of claim 1 , wherein M is yttrium or a lanthanide metal, at least one of R 5-8 is not —H and at least one of R 9-12 is not —H. 3 . The olefin propagating catalytic species of claim 1 , where R 1 and R 16 are chosen from radicals having formula (II), radicals having formula (III), and radicals having formula (IV): where each of R 31-35 , R 41-48 , and R 51-59 is independently chosen from —H, (C 1 -C 40 ) hydrocarbyl, (C 1 -C 40 ) heterohydrocarbyl, —Si(R C ) 3 , —Ge(R C ) 3 , —P(R P ) 2 , —N(R N ) 2 , —OR C , —SR C , —NO 2 , —CN, —CF 3 , R C S(O)—, R C S(O) 2 —, (R C ) 2 C═N—, R C C(O)O—, R C OC(O)—, R C C(O)N(R N )—, (R C ) 2 NC(O)—, or halogen; provided that when R 1 and R 16 are formula (II), at least one of R 31 to R 35 is not —H. 4 . The olefin propagating catalytic species of claim 1 , wherein at least one of R 8 and R 9 is not —H. 5 . The olefin propagating catalytic species of claim 1 , wherein R 3 and R 14 are (C 1 -C 10 ) alkyl. 6 . The olefin propagating catalytic species of claim 1 , wherein R 3 and R 14 are —OR C , wherein R C is (C 1 -C 30 ) hydrocarbyl. 7 . The olefin propagating catalytic species of claim 1 , wherein R 3 and R 14 are tert-octyl, n-octyl, or n-octylalkoxy. 8 . The olefin propagating catalytic species of claim 1 , wherein R 6 and R 11 are tert-butyl. 9 . The olefin propagating catalytic species of claim 1 , wherein R 1 and R 16 are chosen from radicals having formula (III) and optionally R 42 and R 43 are linked to form a cyclic structure, and optionally R 46 and R 47 are linked to form a cyclic structure. 10 . The olefin propagating catalytic species of claim 1 , where L is chosen from —CH 2 —, —CH 2 (CH 2 ) m CH 2 — where m is from 0 to 3, —CH 2 Si(R C ) 2 CH 2 —, CH 2 Ge(R C ) 2CH 2 —, —CH(CH 3 )CH 2 CH*(CH 3 ), and —CH 2 (phen-1,2-di-yl)CH 2 —, where each R C in L is (C 1 -C 20 ) hydrocarbyl, and “C*” is a carbon atom from which a hydrogen atom is removed to form a secondary or tertiary alkyl radical.
in combination with an organoaluminium compound · CPC title
Polymerisation using regulators, e.g. chain terminating agents {, e.g. telomerisation} · CPC title
Recycling of unreacted starting or intermediate materials · CPC title
using catalysts, e.g. selective catalysts · CPC title
Copolymers of ethene with alpha-alkenes, e.g. EP rubbers · CPC title
Related publications grouped by family.
Answers are generated from the same data shown on this page.