A ternary composite catalyst of diethylzinc and yttrium trifluoroacetate loaded on chitin for copolymerization of carbon dioxide, epoxy cyclohexane and ethylene oxide is provided. The ternary composite catalyst exhibits strong catalytic activity for the ternary copolymerization of carbon dioxide, cyclohexane oxide and ethylene oxide. A high molecular weight and content of ester chain is maintained. Conventional rare earth ternary catalysts leave residues in the polymer, and the polymer requires rinsing with hydrochloric acid. The ternary composite catalyst can be removed through filtration. The average molecular weight of the resulting polycarbonate is more than 100,000, and the ester chain content is more than 90%. The resulting polymer has a lower metal content. The ternary composite catalyst can be used in agricultural film, disposable packaging and other polymer materials.

A ternary composite catalyst of diethylzinc and yttrium trifluoroacetate loaded on chitin for copolymerization of carbon dioxide, epoxy cyclohexane and ethylene oxide is provided. The ternary composite catalyst exhibits strong catalytic activity for the ternary copolymerization of carbon dioxide, cyclohexane oxide and ethylene oxide. A high molecular weight and content of ester chain is maintained. Conventional rare earth ternary catalysts leave residues in the polymer, and the polymer requires rinsing with hydrochloric acid. The ternary composite catalyst can be removed through filtration. The average molecular weight of the resulting polycarbonate is more than 100,000, and the ester chain content is more than 90%. The resulting polymer has a lower metal content. The ternary composite catalyst can be used in agricultural film, disposable packaging and other polymer materials.

A method for producing polyether carbonate polyols via the following steps: (i) accumulating alkylene oxide and carbon dioxide on a H-functional starter substance in the presence of a double metal cyanide catalyst or a metal complex catalyst based on the metals zinc and/or cobalt, wherein a reaction mixture containing the polyether carbonate polyol is obtained; and (ii) adding at least one component K to the reaction mixture containing the polyether carbonate polyol, wherein a buffer system suitable for buffering a pH value in the region of pH 3.0 to 9.0 is used as component K, wherein the component K is free from compounds containing P—OH— groups.

A method for producing polyether carbonate polyols via the following steps: (i) accumulating alkylene oxide and carbon dioxide on a H-functional starter substance in the presence of a double metal cyanide catalyst or a metal complex catalyst based on the metals zinc and/or cobalt, wherein a reaction mixture containing the polyether carbonate polyol is obtained; and (ii) adding at least one component K to the reaction mixture containing the polyether carbonate polyol, wherein a buffer system suitable for buffering a pH value in the region of pH 3.0 to 9.0 is used as component K, wherein the component K is free from compounds containing P—OH— groups.

A processfor producing a (poly)ol block copolymer comprising the reaction of a DMC catalyst with a polycarbonate or polyester (poly)ol (co)polymer and ethylene oxide, and optionally one or more other alkylene oxides, to produce a (poly)ol block copolymer wherein > 70% of the copolymer chain ends are terminated by primary hydroxyl groups, and the copolymers and products incorporating such copolymers.

A processfor producing a (poly)ol block copolymer comprising the reaction of a DMC catalyst with a polycarbonate or polyester (poly)ol (co)polymer and ethylene oxide, and optionally one or more other alkylene oxides, to produce a (poly)ol block copolymer wherein > 70% of the copolymer chain ends are terminated by primary hydroxyl groups, and the copolymers and products incorporating such copolymers.

The invention provides polymer compositions, compounds, processes, and methods of use of the polymers for drug delivery, biodegradable consumer plastics, or solvents for Li-based batteries or supercapacitors. The invention is based, at least in part, on the discovery that poly(glyceric acid carbonate)s and alkyl functionalized poly(1,2 glycerol carbonates) and poly(glyceric acid carbonate)s and pharmaceutical agent/composition functionalized poly(1,2 glycerol carbonates) and poly(glyceric acid carbonate)s represent a new type of glycerol based polymer that 1) degrade into glycerol and carbon dioxide; 2) the poly(1,2 glycerol carbonates) degrade more readily than conventional poly(1,3 glycerol carbonates; and 3) poly(1,2 glycerol carbonates) can be processed to give melts, viscous fluids, liquids, films, sheets, gels, meshes, foams, fibers, or particles.

The invention provides polymer compositions, compounds, processes, and methods of use of the polymers for drug delivery, biodegradable consumer plastics, or solvents for Li-based batteries or supercapacitors. The invention is based, at least in part, on the discovery that poly(glyceric acid carbonate)s and alkyl functionalized poly(1,2 glycerol carbonates) and poly(glyceric acid carbonate)s and pharmaceutical agent/composition functionalized poly(1,2 glycerol carbonates) and poly(glyceric acid carbonate)s represent a new type of glycerol based polymer that 1) degrade into glycerol and carbon dioxide; 2) the poly(1,2 glycerol carbonates) degrade more readily than conventional poly(1,3 glycerol carbonates; and 3) poly(1,2 glycerol carbonates) can be processed to give melts, viscous fluids, liquids, films, sheets, gels, meshes, foams, fibers, or particles.

The present invention relates to a metal complex compound which are prepared in the form of a metal nanostructure having various stereo structures and thus can be used as a catalyst or the like having an excellent activity in preparing a polyalkylene carbonate resin and the like, and a metal nanostructure and a catalyst composition comprising the same. The metal complex compound comprises a plurality of linear inorganic coordination polymer chains having a form in which an oxalic acid is coordinated and linked to a transition metal and the plurality of polymer chains are linked to each other via a predetermined neutral ligand.

Provided are catalysts, methods of making catalysts, methods of using catalysts, and copolymers made utilizing the catalysts. The catalyst has a metal salen complex group, a bridging group, and one or more co-catalyst groups. The metal salen complex group is attached to the bridging group and the bridging group is attached to the co-catalyst group. The copolymers made utilizing the catalysts are polyesters or polycarbonates.