| 摘要 |
1493089 Imides of methacrylic acid or anhydride polymers INTERNATIONAL BUSINESS MACHINES CORP 31 Aug 1976 [22 Sept 1975] 36044/76 Heading C3P [Also in Division G2] Poly(dimethacrylimide) is prepared by treating poly(methacrylic acid) or poly(methacrylic anhydride) with ammonia while heating at 200‹ C. Poly(N-methyl dimethacrylimide) and poly- (N-ethyl dimethacrylimide) are prepared by a similar process using mono- or dimethyl amine or monoethylamine instead of ammonia. Poly(dimethacrylimide/methyl methacrylate) is prepared by treating poly(methacrylic acid/ methyl methacrylate) with ammonia. |
