PROCESSES FOR THE PREPARATION OF SQUARAINE COMPOSITIONS
10-11-1987 дата публикации
Номер:
CA1229094A
Автор: BARANYI GIUSEPPA, KAZMAIER PETER M, HSIAO CHENG-KUO, BURT RICHARD A, BARANYI, GIUSEPPA, KAZMAIER, PETER M., HSIAO, CHENG-KUO, BURT, RICHARD A.
Принадлежит: XEROX CORP, XEROX CORPORATION
Контакты:
Номер заявки: 467871
Дата заявки: 15-11-1984
Disclosed is an improved process for the preparation of squaraine compositions which comprises reacting squaric acid, an aromatic amine, and a composition selected from the group consisting of phenols and phenol squaraines, in the presence of an aliphatic alcohol, and an optional azeotropic substance.