Polyester polyol synthesis by alternating copolymerization of propylene oxide with cyclic acid anhydrides by using double metal cyanide catalyst

2010 ◽  
Vol 70 (5) ◽  
pp. 288-293 ◽  
Author(s):  
Hyun Suk Suh ◽  
Ju Young Ha ◽  
Ji Hwan Yoon ◽  
Chang-Sik Ha ◽  
Hongsuk Suh ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Polyol Synthesis ◽  
Cyclic Acid ◽  
Polyester Polyol ◽  
Metal Cyanide ◽  
Acid Anhydrides ◽  
Alternating Copolymerization

Copolymerization of Carbon Dioxide and Propylene Oxide with Multi-Metal Cyanide Complexes as Catalyst

2013 ◽  
Vol 646 ◽  
pp. 3-7 ◽  
Author(s):  
Ling Bin Lu ◽  
Wu Yuan Zhang ◽  
Qiang Lin ◽  
Li Sha Pan ◽  
Su Juan Pang ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Metal Salts ◽  
Molar Ratio ◽  
High Catalytic Activity ◽  
Metal Cyanide ◽  
Metal Element ◽  
Cyanide Complexes ◽  
Poly Propylene ◽  
Alternating Copolymerization ◽  
Catalyst Efficiency

A novel and green mechanochemical technique, the grinding-based method, was applied for synthesis of multi-metal cyanide (MMC) complexes. In order to discovery the effect of metal element on structure and catalyst efficiency, the obtained three MMCs were made from deferent three metal salts groups, which including ZnCl2 to NiCl2 to K3Fe(CN)6 molar ratio of 4:3:1 (MMC-1), ZnCl2 to NiCl2 to K3Co(CN)6 molar ratio of 4:4:1 (MMC-2), and ZnCl2 to NiCl2 to K4Fe(CN)6, respectively. And three MMCs were further used for copolymerization of CO2 and propylene oxide. FTIR and 1H NMR results shown, the alternating copolymerization obtained anticipated poly(propylene carbonate) with high catalytic activity. Comparing to the conventional solvent-based synthesis, the strikingly efficient and practically applicable grinding-based method reveals clear merits for syntheses of MMC complexes.

Chiral salenCo(iii) complexes with bulky substituents as catalysts for stereoselective alternating copolymerization of racemic propylene oxide with carbon dioxide and succinic anhydride

2021 ◽  
Vol 12 (12) ◽  
pp. 1776-1786
Author(s):  
Zhou Wang ◽  
Ying Mu
Keyword(s):  
Carbon Dioxide ◽  
Propylene Carbonate ◽  
Propylene Oxide ◽  
Succinic Anhydride ◽  
Poly Propylene ◽  
Alternating Copolymerization

Stereoregular poly(propylene carbonate)s and poly(propylene succinate-block-carbonate)s were synthesized with new chiral salenCo(iii) catalysts carrying bulky substituents.

scholarly journals Fabrication and characterization of the ternary composite catalyst system of ZnGA/RET/DMC for the terpolymerization of CO2, propylene oxide and trimellitic anhydride

RSC Advances ◽  
2021 ◽  
Vol 11 (15) ◽  
pp. 8782-8792
Author(s):  
Ningzhang Liu ◽  
Chuanhai Gu ◽  
Qinghe Wang ◽  
Linhua Zhu ◽  
Huiqiong Yan ◽  
...  
Keyword(s):  
Propylene Oxide ◽  
Ternary Complex ◽  
Catalyst System ◽  
Composite Catalyst ◽  
Trimellitic Anhydride ◽  
Ternary Composite ◽  
Metal Cyanide ◽  
Fabrication And Characterization ◽  
Poly Propylene

For poly(propylene carbonate trimellitic anhydride) with good yield, thermal stability and high molecular weight, a catalyst of zinc glutarate/rare earth ternary complex/double metal cyanide was used for terpolymerization of CO2, propylene oxide and trimellitic anhydride.

scholarly journals An asymmetric synthesis of lactones from cyclic acid anhydrides with chiral binaphthyldiamines.

1986 ◽  
Vol 50 (3) ◽  
pp. 693-698 ◽  
Author(s):  
Yukio KAWAKAMI ◽  
Jun HIRATAKE ◽  
Yukio YAMAMOTO ◽  
Jun''ichi ODA
Keyword(s):  
Asymmetric Synthesis ◽  
Cyclic Acid ◽  
Acid Anhydrides

Cationic Polyurethane from CO2-polyol as Effective Barrier Binder to Polyaniline-based Metal Anti-corrosion Material

2021 ◽  
Author(s):  
Chenyang Zou ◽  
Qinghai Zhou ◽  
Xianhong Wang ◽  
Hongming Zhang ◽  
Fosong Wang
Keyword(s):  
Propylene Oxide ◽  
Polymer Chemistry ◽  
Metal Cyanide ◽  
Effective Barrier

The work disclosed CO2 polymer chemistry for sustainable metal anti-corrosion material. CO2-Polyol, a poly(ether carbonate)diol from telomerization of CO2 and propylene oxide catalyzed by Zinc-Cobalt double metal cyanide in the...

Asymmetric synthesis of optically active lactones from cyclic acid anhydrides using lipase in organic solvents.

1988 ◽  
Vol 52 (12) ◽  
pp. 3087-3092 ◽  
Author(s):  
Yukio YAMAMOTO ◽  
Kazuyoshi YAMAMOTO ◽  
Takaaki NISHIOKA ◽  
Jun''ichi ODA
Keyword(s):  
Asymmetric Synthesis ◽  
Organic Solvents ◽  
Optically Active ◽  
Cyclic Acid ◽  
Acid Anhydrides

scholarly journals Tertiary Amines Paired with Trialkyl Boranes: A Simple Organocatalyst for Fully Alternating Copolymerization of Carbon Dioxide and Propylene Oxide

2020 ◽  
Author(s):  
Xing-Hong Zhang
Keyword(s):  
Carbon Dioxide ◽  
Small Molecules ◽  
Propylene Oxide ◽  
Average Molecular Weight ◽  
Tertiary Amines ◽  
Carbon Dioxide Co2 ◽  
Poly Propylene ◽  
Alternating Copolymerization ◽  
Completely Alternating ◽  
Huge Challenge

Metal-free synthesis of fully alternating polycarbonates from carbon dioxide (CO2) and epoxides is highly desired but a huge challenge. Here, we disclose the combination of tertiary amines with trialkyl boranes for completely alternating copolymerization of CO2 with epoxides. Triethylamine (TEA) pairing with triethyl borane (TEB), the simplest catalyst for the copolymerization of CO2 and propylene oxide (PO), afforded fully alternating poly(propylene carbonate) (PPC) with a turnover frequency (TOF) of 54 h-1 at 60 oC. Remarkably, diamine such as, N,N,N',N'-tetraethylethylenediamine (TEED) and triamine such as N,N,N',N'',N''-pentamethyldiethylene triamine (PMDETA) pairing with TEB exhibited improved the copolymer selectivity of up to 99%. Supplementally, the effect of trialkylborane structure on the copolymerization were also investigated. Moreover, PPCs prepared from these tertiary amines/ trialkyl boranes Lewis pairs showed the head-to-tail diad content of around 80%. The number-average molecular weight of PPC was up to 56.0 kg/mol with narrow distribution (Đ =1.16) and could be easily adjusted by simply varying the feeding ratios. The 1H NMR spectra and MALDI-TOF-MS spectra suggest that both tertiary amine-activating CO2 and TEB-masked end anions cooperatively promote the fully alternating CO2/epoxide copolymerization. This work provides an organocatalytic platform for well-defined CO2/epoxide copolymers using simple small molecules with high atomic utilization.<br>

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