Preparation of alkanolamines

Details Preparation of alkanolamines Preparation of alkanolamines

2005-07-27

2008-09-16

Del Cotto, Gregory R (Department: 1796)

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

Organic compounds

Amino nitrogen containing

C564S300000, C564S497000, C510S499000, C510S505000

Reexamination Certificate

active

07425652

ABSTRACT:
Alkanolamine compositions are disclosed. The composition comprises an alkanolamine and hydroxylamine or hydrazine. Preferred alkanolamine includes diethanolamine, triethanolamine, and mixtures thereof. The composition of the invention has significantly reduced discoloration.

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C. Longuet et al., “Oligomer Model to Explain the Coloration of TEA and Discoloration Catalytic Treatment,”Journal of Molecular Catalysis A: Chemical234 (2005) 59-62.

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