| 摘要 |
<p>Novel modifying agents contain a sharply-melting crystalline polymer moiety, preferably a side chain crystalline (SCC) moiety, and an active chemical moiety. Such modifying agents, especially when in the form of particles, can be placed in contact with a matrix, will not modify the matrix below the crystalline melting point Tp, but will rapidly modify the matrix above Tp. The active chemical moiety can react with the matrix, catalyze a reaction of the matrix, or inhibit a reaction of the matrix. Particularly useful compositions are polymer precursors which are storage-stable at low temperatures but which are rapidly converted to cross-linked resins when heated to temperatures above Tp, optionally in the presence of light.</p> |
