摘要:
Provided are a double metal cyanide (DMC) catalyst used in copolymerization of an epoxide/carbon dioxide useful for preparing polyurethane, a foaming agent, an elastomer, sealant, a coating material, and the like, and an epoxide/carbon dioxide copolymer prepared using the same.In addition, the present invention provides a double metal cyanide (DMC) catalyst prepared using an ion-exchange resin without washing alcohol, and an epoxide/carbon dioxide copolymer having a high purity, a high selectivity, and a high carbonate content prepared using the same.
摘要:
Provided are a double metal cyanide (DMC) catalyst used in copolymerization of an epoxide/carbon dioxide useful for preparing polyurethane, a foaming agent, an elastomer, a sealant, a coating material, and the like, and an epoxide/carbon dioxide copolymer prepared using the same. In addition, the present invention provides a double metal cyanide (DMC) catalyst prepared us ing an ion-exchange resin without washing alcohol, and an epoxide/carbon dioxide copolymer having a high purity, a high selectivity, and a high carbonate content prepared using the same.
摘要:
Provided is preparation of poly(alkylene carbonate) through alternating copolymerization of carbon dioxide and epoxide. According to the disclosure, by introducing a diepoxide compound to alternating copolymerization of carbon dioxide and epoxide compound using a metal(III) prepared with salen-type ligands containing quaternary ammonium salt as a catalyst, some of the polymer chains may be cross-linked to thus increase an average molecular weight of the copolymer and extend a distribution of molecular weight. A resin prepared according to this method may have high mechanical strength and rheological advantages.
摘要:
Provided is preparation of poly(alkylene carbonate) by alternating copolymerization of carbon dioxide and epoxide. To be specific, provided are a method for preparing block or graft copolymers of the polymer compound and poly(alkylene carbonate) by alternating-copolymerization of an epoxide compound and carbon dioxide by using a metal (III) compound prepared from salen-type ligand with a quaternary ammonium salt as a catalyst in the presence of a polymer compound having a functional group of hydroxyl or carboxylic acid, and block or graft copolymers prepared by the method.
摘要:
The complex of the present invention containing an onium salt and a central Lewis acidic metal has a high catalytic activity at a high temperature for the copolymerization of an epoxide and carbon dioxide to produce a high molecular weight polycarbonate.