Provided are adhesive materials which exhibit high adhesive strength, and compounds which can be blended with the adhesive materials. The compounds are represented by the general formula: X(Y1)n1, in which the core (X) and the terminal group (Y1) are bonded to each other, n1 represents the number of terminal groups (Y1) bonded to the core (X), and n1 is equal to the valence of the core (X)； the core (X) is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group (Y1) is the oxygen atom or the nitrogen atom； and the terminal group (Y1) is further defined.
