Amination process

Details Amination process Amination process

1998-11-12

1999-11-30

Barts, Samuel

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564475, 564477, 564479, 564511, 564512, C07C20900

Patent

active

059945850

ABSTRACT:
The present invention relates to an amination process for the manufacture of polyamines. The purpose of the process is to increase the selectivity of linear aminated products and to prevent the formation of discoloring by-products or by-products which may later cause discoloration. According to the process this is achieved by performing, in a first part of the process, the amination to a conversion degree of between 50 and 98% by weight, calculated on the total yield of polyamines, at a proportionally time-weighted average temperature, which is at least 15.degree. C. higher than the proportionally time-weighted average temperature in the remaining part.

REFERENCES:
patent: 2365721 (1944-12-01), Olln et al.
patent: 3723529 (1973-03-01), Pitts et al.
patent: 3766184 (1973-10-01), Johansson et al.
patent: 4123462 (1978-10-01), Best
patent: 4347381 (1982-08-01), Tuvell
patent: 4404405 (1983-09-01), Winters
patent: 4977266 (1990-12-01), Burgess et al.

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