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Organonitriles as complexing agents for the double metal cyanide-catalyzed synthesis of polyether, polyester, and polycarbonate polyols.

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Title: Organonitriles as complexing agents for the double metal cyanide-catalyzed synthesis of polyether, polyester, and polycarbonate polyols.
Authors: Tran, Chinh Hoang1 (AUTHOR), Lee, Soo Jeong1 (AUTHOR), Moon, Byeong-ryeol1 (AUTHOR), Lee, Eun-gyeong1 (AUTHOR), Choi, Ha-kyung1 (AUTHOR), Kim, Il1 (AUTHOR) ilkim@pusan.ac.kr
Source: Catalysis Today. Jun2023, Vol. 418, pN.PAG-N.PAG. 1p.
Subjects: Polyethers, Polypropylene oxide, Polycarbonates, Polyols, Metal cyanides, Metals, Polyesters, Ring-opening polymerization
Abstract: A series of double metal cyanide (DMC) catalysts prepared using nitrile compounds as complexing agents (CAs) was employed for the synthesis of polyether, polyester, and polycarbonate polyols. The DMC catalysts bearing nitrile CAs exhibited remarkably higher activities toward the ring-opening polymerization (ROP) of propylene oxide (PO) and ε-caprolactone (CL), as well as toward the copolymerization of PO with CO 2 , than conventional DMC catalysts prepared using tert -butyl alcohol as a CA. Accordingly, DMC catalysts bearing 2-methylbutyronitrile or isobutyronitrile showed the highest activities for the ROP of PO (TOF = 533 min−1) and CL (TOF = 83 h−1), respectively, whereas the DMC using acetonitrile CA exhibited the highest efficiency for the copolymerization of PO and CO 2 (TOF = 475 h−1). The resultant polypropylene oxide polyols were characterized by a narrow polydispersity index (1.1 −1.2) and a low unsaturation level (0.004−0.014). In addition, the DMC catalyst bearing isobutyronitrile afforded α,ω-hydroxyl-terminated polycaprolactones with controlled molecular weights (1000−9800 g mol−1) and a narrow polydispersity index of 1.1−1.5. Polycarbonate polyols with relatively high yields (56–67 %) and carbonate contents (30–38 %) were also obtained. [Display omitted] • Double metal cyanide catalysts using nitriles complexing agents are prepared and intensively characterized. • The catalysts show excellent activities (TOF = 227−533 min−1) for the polymerization of propylene oxide. • α,ω-Polyester polyols with controlled MW (1000–10,000 g mol−1) and narrow polydispersity (1.1–1.5) are achieved. • Polycarbonate polyols are also produced with high yield (56−67 %) and carbonate content (30–38 %). [ABSTRACT FROM AUTHOR]
Copyright of Catalysis Today is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Organonitriles as complexing agents for the double metal cyanide-catalyzed synthesis of polyether, polyester, and polycarbonate polyols.
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  Data: <searchLink fieldCode="AR" term="%22Tran%2C+Chinh+Hoang%22">Tran, Chinh Hoang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee%2C+Soo+Jeong%22">Lee, Soo Jeong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Moon%2C+Byeong-ryeol%22">Moon, Byeong-ryeol</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lee%2C+Eun-gyeong%22">Lee, Eun-gyeong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Choi%2C+Ha-kyung%22">Choi, Ha-kyung</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Kim%2C+Il%22">Kim, Il</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ilkim@pusan.ac.kr</i>
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  Data: <searchLink fieldCode="DE" term="%22Polyethers%22">Polyethers</searchLink><br /><searchLink fieldCode="DE" term="%22Polypropylene+oxide%22">Polypropylene oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Polycarbonates%22">Polycarbonates</searchLink><br /><searchLink fieldCode="DE" term="%22Polyols%22">Polyols</searchLink><br /><searchLink fieldCode="DE" term="%22Metal+cyanides%22">Metal cyanides</searchLink><br /><searchLink fieldCode="DE" term="%22Metals%22">Metals</searchLink><br /><searchLink fieldCode="DE" term="%22Polyesters%22">Polyesters</searchLink><br /><searchLink fieldCode="DE" term="%22Ring-opening+polymerization%22">Ring-opening polymerization</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: A series of double metal cyanide (DMC) catalysts prepared using nitrile compounds as complexing agents (CAs) was employed for the synthesis of polyether, polyester, and polycarbonate polyols. The DMC catalysts bearing nitrile CAs exhibited remarkably higher activities toward the ring-opening polymerization (ROP) of propylene oxide (PO) and ε-caprolactone (CL), as well as toward the copolymerization of PO with CO 2 , than conventional DMC catalysts prepared using tert -butyl alcohol as a CA. Accordingly, DMC catalysts bearing 2-methylbutyronitrile or isobutyronitrile showed the highest activities for the ROP of PO (TOF = 533 min−1) and CL (TOF = 83 h−1), respectively, whereas the DMC using acetonitrile CA exhibited the highest efficiency for the copolymerization of PO and CO 2 (TOF = 475 h−1). The resultant polypropylene oxide polyols were characterized by a narrow polydispersity index (1.1 −1.2) and a low unsaturation level (0.004−0.014). In addition, the DMC catalyst bearing isobutyronitrile afforded α,ω-hydroxyl-terminated polycaprolactones with controlled molecular weights (1000−9800 g mol−1) and a narrow polydispersity index of 1.1−1.5. Polycarbonate polyols with relatively high yields (56–67 %) and carbonate contents (30–38 %) were also obtained. [Display omitted] • Double metal cyanide catalysts using nitriles complexing agents are prepared and intensively characterized. • The catalysts show excellent activities (TOF = 227−533 min−1) for the polymerization of propylene oxide. • α,ω-Polyester polyols with controlled MW (1000–10,000 g mol−1) and narrow polydispersity (1.1–1.5) are achieved. • Polycarbonate polyols are also produced with high yield (56−67 %) and carbonate content (30–38 %). [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Catalysis Today is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.cattod.2023.114125
    Languages:
      – Code: eng
        Text: English
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      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Polyethers
        Type: general
      – SubjectFull: Polypropylene oxide
        Type: general
      – SubjectFull: Polycarbonates
        Type: general
      – SubjectFull: Polyols
        Type: general
      – SubjectFull: Metal cyanides
        Type: general
      – SubjectFull: Metals
        Type: general
      – SubjectFull: Polyesters
        Type: general
      – SubjectFull: Ring-opening polymerization
        Type: general
    Titles:
      – TitleFull: Organonitriles as complexing agents for the double metal cyanide-catalyzed synthesis of polyether, polyester, and polycarbonate polyols.
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            NameFull: Tran, Chinh Hoang
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            NameFull: Lee, Soo Jeong
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            NameFull: Moon, Byeong-ryeol
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            NameFull: Lee, Eun-gyeong
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            NameFull: Choi, Ha-kyung
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            – D: 01
              M: 06
              Text: Jun2023
              Type: published
              Y: 2023
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              Value: 418
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