Air-stable di-nuclear yttrium complexes as versatile catalysts for lactide polymerization and copolymerization of epoxides with carbon dioxide or phthalic anhydride
作者:Yu-Chia Su、Wan-Ling Liu、Chen-Yu Li、Bao-Tsan Ko
DOI:10.1016/j.polymer.2019.01.060
日期:2019.3
these di-yttrium nitrophenolate complexes was systematically studied. Experimental results revealed that air-stable complexes 3 and 4 were shown to effectively catalyze not only lactide polymerization but also copolymerization of cyclohexene oxide (CHO) with CO2 or PA. Among these compounds, di-Y complex 4 was the most active catalyst for the ring-openingpolymerization of l-lactide in combination with
Di-nuclear zinc complexes containing tridentate imino-benzotriazole phenolate derivatives as efficient catalysts for ring-opening polymerization of cyclic esters and copolymerization of phthalic anhydride with cyclohexene oxide
ring‐openingpolymerization (ROP) of ε‐caprolactone (ε‐CL), β‐butyrolactone (β‐BL), and lactide (LA) of complexes 1 and 2 was systematic studied. In combination with 9‐anthracenemethanol (9‐AnOH), Zn complex 1 was found to polymerize ε‐CL, β‐BL, and L‐LA with efficient catalytic activities in a controlled character. This study also compared the reactivity of these ROP monomers with different ring strains
申请人:Eutec New Materials Technology (Suzhou) Co., Ltd
公开号:EP3896067A1
公开(公告)日:2021-10-20
The invention provides novel polycyclic compounds, synthesis methods and applications thereof. The compound of the present invention comprise a plurality of carbocyclic and/or heterocyclic structures having at least one group that emits visible light or fluorescence and at least one ultraviolet and/or visible (blue) light absorbing group covalently bonded to provide stability. The compounds of the invention can be used as a light conversion agent, dye, pigment, fluorescence agent, ultraviolet light or blue light absorber, and is applied to optical film, agricultural film, optical disk (disc), optical lens, goggles, skin care, makeup, lighting, coatings, adhesives, light stabilizers, or panels.
申请人:EUTEC NEW MATERIALS TECHNOLOGY (SUZHOU) CO., LTD.
公开号:US20220017474A1
公开(公告)日:2022-01-20
Novel polycyclic compounds, synthesis methods and applications thereof are provided. The compound comprise a plurality of carbocyclic and/or heterocyclic structures having at least one group that emits visible light or fluorescence and at least one ultraviolet and/or visible (blue) light absorbing group covalently bonded to provide stability. The compounds can be used as a light conversion agent, dye, pigment, fluorescence agent, ultraviolet light or blue light absorber, and is applied to optical film, agricultural film, optical disk (disc), optical lens, goggles, skin care, makeup, lighting, coatings, adhesives, light stabilizers, or panels.