[EN] ROBUST PHOTOCHROMIC COMPOUNDS WITH SILICON- OR PHOSPHORUS-CONTAINING HETEROCYCLIC RING AND PRODUCTION THEREOF<br/>[FR] COMPOSÉS PHOTOCHROMIQUES ROBUSTES COMPORTANT UN CYCLE HÉTÉROCYCLIQUE CONTENANT DU PHOSPHORE OU DU SILICIUM ET LEURS PROCÉDÉS DE PRODUCTION
申请人:UNIV HONG KONG
公开号:WO2015188790A1
公开(公告)日:2015-12-17
In one embodiment, provided are a new class of diarylethene-containing photochromic compounds with the incorporation of silicon-or phosphorus-containing heterocycles into the "ethene" part of the diarylethene backbone that has been shown to be capable of displaying tunable, robust and thermally stable photochromic properties. Also provided are methods for synthesizing these compounds, as well as uses of these compounds as these compounds may be used as the photochromic layer in an optical recording material and other optical functioning devices.
Ligand Compound, Transition Metal Compound, and Catalyst Composition Comprising the Transition Metal Compound
申请人:LG Chem, Ltd.
公开号:US20190263844A1
公开(公告)日:2019-08-29
The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.
Ligand compound, transition metal compound, and catalyst composition comprising the transition metal compound
申请人:LG Chem, Ltd.
公开号:US10975110B2
公开(公告)日:2021-04-13
The present invention relates to a novel ligand compound, a transition metal compound and a catalyst composition comprising the same. The novel ligand compound and the transition metal compound of the present invention may be useful as a catalyst of polymerization reaction for preparing an olefin-based polymer having a low density.