Method for preparing polyols

M Kember, R Kabir, CK Williams - US Patent 10,774,179, 2020 - Google Patents
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 …

Method and catalyst system for preparing polymers and block copolymers

CK Williams, C Romain, M Kember - US Patent 10,696,797, 2020 - Google Patents
US10696797B2 - Method and catalyst system for preparing polymers and block copolymers -
Google Patents US10696797B2 - Method and catalyst system for preparing polymers and block …

Bimetallic catalytic complexes for the polymerisation of carbon dioxide and an epoxide

CK Williams, M Kember, P Knight - US Patent 10,308,762, 2019 - Google Patents
International Search Report and Written Opinion for PCT/EP2015/052496, dated Apr. 7,
2015. International Preliminary Report on Patentability for PCT/EP2015/052496, dated Aug …

Process for the production of tetraaminobiphenol macrocyclic ligands; and novel tetraaminobiphenol macrocyclic ligands

M Kember, A Chartoire, A Blackburn… - US Patent 11,014,894, 2021 - Google Patents
(57) ABSTRACT A process for preparing a tetra-substituted aminobiphenol macrocyclic
ligand having the structure (I), comprising the step of treating a precursor compound having …

Catalysts

C Keyworth, A Chapman, A Chartoire, E Hollis… - US Patent …, 2020 - Google Patents
US10774180B2 - Catalysts - Google Patents US10774180B2 - Catalysts - Google Patents
Catalysts Download PDF Info Publication number US10774180B2 US10774180B2 US16/014,079 …

Process for the production of tetraaminobiphenol macrocyclic ligands; and novel tetraaminobiphenol macrocyclic ligands

M Kember, A Chartoire, A Blackburn… - US Patent 11,912,673, 2024 - Google Patents
A process for preparing a tetra-substituted aminobiphenol macrocyclic ligand having the
structure (I), including the step of treating a precursor compound having the structure (II) with …

Method for preparing polyether carbonates

M Kember, C Anderson, E Hollis - US Patent 11,851,525, 2023 - Google Patents
The present invention relates to a method for preparing a high molecular weight polyether
carbonate, by reacting an epoxide and carbon dioxide in the presence of a catalyst of …

Multi-block copolymers

CK Williams, Y Zhu - US Patent 11,236,197, 2022 - Google Patents
A comprises a polyester formed by polymerisation of a lactone and/or a lactide; and block B
comprises a copoly ester formed by polymerisation of an epoxide and an anhy dride, or a …