Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1995-05-15
1996-01-30
Wityshyn, Michael G.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536 187, 536 111, 564483, 564472, 564471, C07H 504, C07H 100, C07C 4500
Patent
active
054881030
ABSTRACT:
A composition adapted to convert hydrogen sulfide and organic sulfides to nontoxic polymers. The compositions comprise amine resin solutions made by reacting sterically hindered amines such as selected diamines, triamines, amino alcohols, and mixtures thereof, with aldehydes, aldehyde donors, or the reaction products of lower alkanolamines and lower aldehydes. The subject compositions are preferably made by reacting the sterically hindered amines and aldehyde components in about a 1:1 molar ratio at a temperature ranging from about 110.degree. to about 120.degree. F. (about 43.degree. to about 49.degree. C.), using enough of the sterically hindered amine to produce a reaction product having a pH ranging from about 10.5 to about 12. Streams containing hydrogen sulfide or organic sulfides are preferably treated by contacting such streams with from about 2 to about 4 ppm of the amine solution of the invention per ppm of sulfide.
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"Sterically Hindered Amines for CO.sub.2 Removal of Gases" in I&EC Fundamentals, vol. 22, No. 2, 1983.
Leary Louise N.
Wityshyn Michael G.
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