Now showing items 1-2 of 2
Dibenzo crown monomers and polymers formed therefrom
(United States Patent and Trademark Office, 1994-04-12)
Novel bis(extraannular functionally-substituted phenylene) crown compounds, useful as chelating agents or in the synthesis of condensation polymers containing large semi-rigid macrocycles in the polymer backbone, are ...
Mono- and di(functionally-substituted phenylene) semi-rigid crowns and precursors thereof
(United States Patent and Trademark Office, 1994-07-19)
Bis(carboalkoxy-substituted m-phenylene)-32-crown-10 compounds, useful as polymerizable monomers, can be formed in one step by reacting a functionalized dihydroxy aromatic compound with a dihalopolyether. In the same ...