Novel application of double metal cyanide in the synthesis of hyperbranched polyether polyols

Gu, Yi; Dong, Xu

doi:10.1080/15685551.2012.705492

Cited by 8 publications

(2 citation statements)

References 23 publications

(22 reference statements)

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“…The broad peak at 3480 cm −1 was assigned to OH absorption. The strong absorption peak at 2900 to 3000 cm −1 correspond to the methylene, and the strong absorption peak at 1097 cm −1 was assigned to the absorption peak of aliphatic ether bond 26,27 …”

Section: Resultsmentioning

confidence: 99%

A novel polyether polyol contains repeating cyclohexane units and its application on reactive polyurethane adhesive

Zong

Fang

Zhao

et al. 2020

Polymers for Advanced Techs

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A novel polyether polyol was successfully synthesized from cyclohexene oxide (CO), propylene oxide (PO), and poly(propylene glycol) 400 through ring-opening polymerization, catalyzed by double metal cyanide catalyst for the first time. Then, the obtained cyclohexane-based polyether polyol (CPOL) further reacted with 4,4 0-diphenylmethane diisocyanate to form reactive polyurethane adhesive (RPUA). The thermal properties and mechanical strength of the RPUA were characterized by differential scanning calorimetry, dynamic mechanical analysis, thermogravimetric analysis, and lap shear strength test. It was found that with the introduction of cyclohexane units, the glass transition temperature (T g) and thermal stability of the RPUA increased about 122.3% and 3.32%, respectively. Besides, the lap shear strength of the RPUA prepared with the synthesized CPOL was 130.67% higher than the counterpart derived from conventional polyether polyol 2000. Furthermore, compared with RPUA-PPG, RPUA-CPOL also exhibited excellent lap shear strength on polycarbonate substrate even when the adhesion joints were immersed into hot water or alkaline solvent. All the above results suggest that the cyclohexane units in polyether polyol have great improvements in the thermal stability and lap shear strength of RPUA.

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Section: Resultsmentioning

confidence: 99%

A novel polyether polyol contains repeating cyclohexane units and its application on reactive polyurethane adhesive

Zong

Fang

Zhao

et al. 2020

Polymers for Advanced Techs

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“…DMC catalysts are prepared in the presence of organic additives or complexing agents (CAs), which result in more amorphous structures than conventional PBAs. To date, DMC catalysts have been widely used for numerous organic reactions such as the copolymerization and cycloaddition of CO 2 and epoxides, epoxide ring-opening using amines, esterification and transesterification, synthesis of hyperbranched polymers, hydrogen amination reactions, and Prins reactions [ 12 , 13 , 14 , 15 , 16 , 17 , 18 ]. Notably, the DMC method has tremendous potential for commercialization of CO 2 utilization processes.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyether, Poly(Ether Carbonate) and Poly(Ether Ester) Polyols Using Double Metal Cyanide Catalysts Bearing Organophosphorus Complexing Agents

Lee,

Tran,

Heo

et al. 2024

Polymers

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We developed a series of Zn(II)-Co(III) double metal cyanide (DMC) catalysts with exceptional activity for the ring-opening polymerization of various cyclic monomers by employing diverse organophosphorus compounds as complexing agents (CAs). The chemical structure and composition of DMC catalysts were investigated by commonly used analysis such as infrared and X-ray photoelectron spectroscopies, and elemental analysis combining with in situ NMR analysis to determine the complexation types of organophosphorus compounds the catalyst framework. The resulting catalysts exhibited very high turnover frequencies (up to 631.4 min−1) in the ring-opening polymerization (ROP) of propylene oxide and good efficiency for the ROP of ε-caprolactone. The resultant polyester polyols are suitable to use as an macroinitiator to produce well-defined poly(ester ether) triblock copolymers of 1800–6600 g mol−1 and dispersity of 1.16–1.37. Additionally, the DMC catalysts bearing organophosphorus compounds CAs exhibited remarkable selectivity for the copolymerization of PO with CO2, yielding poly(ether carbonate) polyols with carbonate contents up to 34.5%. This study contributes to the development of efficient DMC catalytic systems that enable the synthesis of high-quality polyols for various applications.

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Influence of method of preparation of solid, double-metal cyanide complexes on their catalytic activity for synthesis of hyperbranched polymers

Sebastian

Srinivas

2013

Applied Catalysis A: General

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Novel application of double metal cyanide in the synthesis of hyperbranched polyether polyols

Cited by 8 publications

References 23 publications

A novel polyether polyol contains repeating cyclohexane units and its application on reactive polyurethane adhesive

A novel polyether polyol contains repeating cyclohexane units and its application on reactive polyurethane adhesive

Synthesis of Polyether, Poly(Ether Carbonate) and Poly(Ether Ester) Polyols Using Double Metal Cyanide Catalysts Bearing Organophosphorus Complexing Agents

Influence of method of preparation of solid, double-metal cyanide complexes on their catalytic activity for synthesis of hyperbranched polymers

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