5608113 Process for preparation of diamines by catalytic amination of aminoalcohols

✍ Scribed by Rainer Becker; Volkmar Menger; Wolfgang Reif; Andreas Henne

• Book ID: 104424376
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 80 KB
• Volume: 125
• Category: Article
• ISSN: 1381-1169
• DOI: 10.1016/s1381-1169(98)80106-4

✦ Synopsis

unsubstituted monovalent hydrocark on having from 1 to 6 carbon atoms, a is at least 3 and b is at least 1; with an effective amount of a heteropoly catalyst having a Keggin structure, selected from the group consisting of heteropoly acids (IlI) having the formula HnXM12040, salts thereof and mixed acid-salts thereof, where X is B+3. Si+4, Ge +4, p+5, M is Mo+6 and n is 3, 4 or 5, as required for the valence of the heteropoly acid Lo equal 0, at a temperature ranging from about 23 ° 2 to the boiling point of the siloxane polymer precu rsor.