Abstract: The present invention provides a multi-block copolymer comprising at least blocks A-B-A or B-A-B, wherein block A comprises a polyester formed by polymerisation of a lactone and/or a lactide; and block B comprises a copolyester formed by polymerisation of an epoxide and an anhydride, or a polycarbonate formed by polymerisation of an epoxide and carbon dioxide, and methods of production thereof.

Abstract: A new family of Group IV transition metal catalytic compounds are provided, which are capable of catalysing the ROP of cyclic esters and cyclic amides to yield polymers of high molecular weight and narrow PDI. The new family of catalysts are surprisingly active not only in catalysing the ROP of lactones such as caprolactone, but also macrolactones (e.g. ?-pentadecalactone, PDL), where the reduced amount of ring strain would typically compromise efficient polymerisation. Also provided is a process for the ring opening polymerisation (ROP) of a cyclic ester or a cyclic amide employing the new catalytic compounds.

Abstract: A process for the polymerisation of olefins is provided, which uses a Group IV transition metal catalyst.

Abstract: The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound.

Abstract: The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound.

Abstract: The present invention provides methods for producing block copolymers, either by the sequential addition of monomers, or using a “one-pot” method. The invention also relates to novel methods for producing polyesters by ring opening lactides and/or lactones and by copolymerising anhydrides and epoxides.

Abstract: The present invention provides a novel catalyst of formula (I): wherein M is selected from Zn(H), Co(II), Mn(II), Mg(II), Fe(II), Cr(III)—X or Fe(III)—X, and the use thereof in polymerizing carbon dioxide and an epoxide.

Abstract: The present invention provides a multi-block copolymer comprising at least blocks A-B-A or B-A-B, wherein block A comprises a polyester formed by polymerisation of a lactone and/or a lactide; and block B comprises a copolyester formed by polymerisation of an epoxide and an anhydride, or a polycarbonate formed by polymerisation of an epoxide and carbon dioxide, and methods of production thereof.

Abstract: The present invention provides methods for producing block copolymers, either by the sequential addition of monomers, or using a “one-pot” method. The invention also relates to novel methods for producing polyesters by ring opening lactides and/or lactones and by copolymerising anhydrides and epoxides.

Abstract: The present invention provides methods for producing block copolymers, either by the sequential addition of monomers, or using a “one-pot” method. The invention also relates to novel methods for producing polyesters by ring opening lactides and/or lactones and by copolymerizing anhydrides and epoxides.

Abstract: The present invention relates to a method for preparing a polycarbonate ether polyol, by reacting an epoxide and carbon dioxide in the presence of a catalyst of formula (I), a double metal cyanide (DMC) catalyst and a starter compound.

Abstract: The present invention provides a novel catalyst of formula (I): wherein M is selected from Zn(H), Co(II), Mn(II), Mg(II), Fe(II), Cr(III)—X or Fe(III)—X, and the use thereof in polymerising carbon dioxide and an epoxide.

Abstract: The present invention provides methods for producing block copolymers, either by the sequential addition of monomers, or using a “one-pot” method. The invention also relates to novel methods for producing polyesters by ring opening lactides and/or lactones and by copolymerising anhydrides and epoxides.