| http://www.w3.org/ns/prov#value | - [0030] Herein R1 is a monovalent organic group containing an amino, epoxy, hydroxyl or carboxyl group, hydrogen, hydroxyl, alkoxy or alkenyloxy group, R2 is a substituted or unsubstituted monovalent hydrocarbon group, letters a and b are positive numbers in the range: 0.001???a???1, 1???b???3, and 1???a+b???4.
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