Method for decoloration of triethylenetetramine (TETA)

Details Method for decoloration of triethylenetetramine (TETA) Method for decoloration of triethylenetetramine (TETA)

1985-12-16

1988-04-12

Bascomb, Wilbur

Distillation: processes, separatory

With chemical reaction

Including step of adding catalyst or reacting material

203 35, 203 91, 564498, B01D 334, C07C 8526

Patent

active

047372435

ABSTRACT:
A method of removing color from crude triethylenetetramine (TETA) is disclosed. In the preferred procedure, acid treated clay or acidic form zeolite are mixed with the TETA at elevated temperatures. After several hours exposure, the TETA is distilled to obtain a decolored product. The decoloration can be a continuous or batch process. The distillation is performed in the presence or absence of the catalyst.

REFERENCES:
patent: 3217026 (1965-11-01), Vertnik et al.
patent: 3472739 (1969-10-01), Ross et al.
patent: 3595921 (1971-07-01), Pitts
patent: 3723529 (1973-03-01), Pitts et al.
patent: 3819710 (1974-06-01), Jordan
patent: 4379024 (1983-04-01), Gardner
patent: 4570019 (1986-02-01), Gibson et al.

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