| abstract |
PURPOSE: To obtain a diacetylene polymer which is excellent in crosslinking reactivity, can give a high-toughness crosslinked product, and comprises specified repeating units. n CONSTITUTION: A diacetylene polymer comprising repeating units of formula I (wherein A is hydrogen or methyl; X is hydrogen or 1-6 C monovalent hydrocarbyl; and R and R' are each 1-6 C bivalent hydrocarbyl). By reacting the diacetylene group of the polymer, a crosslinked product comprising structural units of formulas II and/or III (wherein A, X, R and R' are as defined above) can be formed. n COPYRIGHT: (C)1992,JPO&Japio |