Orthoester polymers

Details Orthoester polymers Orthoester polymers

C - Chemistry, Metallurgy

08

G

167/166, 400/201

C08G 4/00 (2006.01) A61K 9/20 (2006.01) A61K 9/58 (2006.01) A61K 47/00 (2006.01) C08G 65/34 (2006.01) C08G 67/00 (2006.01)

Patent

CA 1087345

ABSTRACT The invention concerns orthoester and orthocarbonate polymers comprising a repeating mer of the general formula: Image wherein R1 is a multivalent radical derived from a polyol; and the group Image is derived from an orthoester or an orthocarbonate, with R2 and R3 when taken independently representing various radicals with either or both of R2 or R3 being bound to the dioxycarbon atom by an oxygen linkage and when taken together with the dioxycarbon atom representing a heterocyclic radical having 1 or 2 oxygen heteroatom linkages to the dioxycarbon atom.

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