| 摘要 |
The invention comprises polyoxypropylene compounds having at least one terminal 3-aminopropyl radical and having molecular weights of 200 to 5000. They are prepared by hydrogenating cyanoethylated derivatives of polyoxypropylene compounds in the presence of a catalyst and a tertiary amine or heterocyclic amine and also preferably in the presence of anhydrous ammonia. Specified cyanoethylated polyoxypropylenes are those whose derivatives have molecular weights of 200 to 5000 and include <FORM:0994900/C3/1> wherein n is 2 to 36 <FORM:0994900/C3/2> wherein the sum of x, y and z is approximately 80, <FORM:0994900/C3/3> wherein the sum of x, y and z is approximately 48 and <FORM:0994900/C3/4> wherein the sum of x, y and z is approximately 6. Tertiary amines used have the general formulae <FORM:0994900/C3/5> or <FORM:0994900/C3/6> where n is 2 to 6 and R1, R2 and R3 (one of whic may be phenyl) are alkyl <C8, or cycloalkyl having 4 to 8 carbon atoms. Heterocyclic amines used are those compounds wherein the nitrogen atom forms part of a ring system of preferably 5 to 12 carbon atoms and is itself free from hydrogen. Examples specified having a b.p. of up to 250 DEG C. are trimethylamine, triethylamine; tripropylamine; tri-n-butylamine; triamylamine; N,N,N1,N1 - tetramethyl - 1,3 - butanediamine, N,N - dimethylbutylamine, N,N - dimethylamylamine, N,N - dimethylethylamine; N,N - dimethylpropylamine, N,N-diethylpropylamine, N,N - diethylbutylamine; N,N - dipropylbutylamine, N,N - dimethylcyclohexylamine, N,N - diethylcyclohexylamine, pyridine, alpha-picoline, 3,5-lutidine, 2,4,6-collidine and N,N-dimethylaniline which are used in quantities of at least 5% and preferably 10-50% by weight based on the weight of cyanoethylated starting material. Specified catalysts are nickel, Raney nickel, and nickel or nickel-containing catalysts on supports such as kieselguhr, fuller's earth and clay, which are used in amounts of 3 to 100% by weight based on the weight of cyanoethylated starting materials. Temperatures of 75 DEG to 150 DEG C. and pressures of 900 to 2000 p.s.i.g. are used. The examples describe the preparation of alpha, omega-bis(3-aminopropyl) poly - 1,2 - propylene glycol having a molecular weight of 2139; tris-(3 - aminopropyl) polyoxypropyl - 1,2,6 - trihydroxyhexane, and tris(3-aminopropyl) polyoxypropyl - 1,1,3 - tris(4 - hydroxyphenyl) propane. |
