New bis(triethoxysilanes) containing a urea functional group >NC(O)N< and having the composition (C2H5O)3Si(CH2)3NHC(O)NRR′ [R = R′ = n-C3H7; R = H, R′ = (CH2)3Si(CH3)(OC2H5)2] and [(C2H5O)3Si(CH2)3NHC(O)NH]2(CnAm)x (A = H, x = 2, 4, 12, n = 1, m = 2; A = H, CH3, x = 1, n = 6, m = 4; A = H, x = 1, n = 10, m = 6) were prepared in high yields and with satisfactory purity by reactions of primary amines (or diamines) with 3-(triethoxysilyl)propyl isocyanate.
新型双(三乙氧基
硅烷)的化合物,含有
尿素官能团 >NC(O)N<,并具有以下组成:(C2H5O)3Si(CH2)3NHC(O)NRR′ [R = R′ = n-C3H7; R = H, R′ = ( )3Si(CH3)(OC2H5)2] 和 [( )3Si( )3NHC(O)NH]2(CnAm)x (A = H, x = 2, 4, 12, n = 1, m = 2; A = H, , x = 1, n = 6, m = 4; A = H, x = 1, n = 10, m = 6),通过一元胺(或二胺)与3-(三乙氧基硅基)丙基
异氰酸酯的反应,获得了高产率和令人满意的纯度。