| 摘要 |
PURPOSE: To obtain a new compound capable of providing an elastomer having a high fluorine content and a low surface energy and useful as a material for solvent- and chemical-resistant rubber materials, mold release agents, etc. CONSTITUTION: This compound of formula I [R<1> and R<2> are each a monovalent hydrocarbon; Q is formula II (R<3> is a bivalent hydrocarbon), etc.; Rf is a bivalent perfluoroalkylene or a bivalent perfluoro polyether; (a) is >=0]. The compound of formula I is obtained by reacting a compound, represented by the formula FCO-Rf -COF and having an acid chloride group at both terminals with a secondary amine compound of formula III in the presence of an acid receiving agent (e.g. trimethylamine) at 20-100 deg.C for 1-8hr. A polymer of an organic fluorine compound having both terminals blocked with alkenyl groups is reacted with a compound having >=3 hydroxyl groups in one molecule in the presence of an addition reactional catalyst provide an elastomer. The resultant elastomer is excellent in mold releasability and water repellency and can be used ass sealants, molding parts, extruded parts, etc. |
