摘要 |
A prepolymer, characterized in that it is prepared by the reaction of two compounds A and B which have two or more functional moieties or two or more groups of functional moieties, respectively, and are capable of undergoing a polymerization through the bonding of a functional moiety or a group of functional moieties of one compound with a functional moiety or a group of functional moieties of the other compound to form a high molecular weight polymer having a structure containing a hole. The prepolymer has a weight average molecular weight of ca. 200 to 100000. In a preferred embodiment, the compound A has a carboxyl moiety or an amino moiety as the above functional moiety or a group of functional moieties, and the compound B has two amino moieties, an amino moiety and a hydroxyl moiety, an amino moiety and a mercapto moiety, or two carboxyl moieties as the above functional moiety or a group of functional moieties. |