Process and apparatus for preparing or reacting alkanolamines
First Claim
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1. A process for preparing colorless alkanolamines and/or alkylenediamines which comprises thermally reacting ammonia or a reactive amine and an alkylene oxide or alkanolamine in a reactor in which the corrosion-sensitive parts of the reactor are made of substantially nickel-free stainless steel.
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Abstract
In preparing or reacting alkanolamines, especially at high temperatures, the use of substantially nickel-free alloy steels prevents corrosion and discoloration.
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7 Claims
- 1. A process for preparing colorless alkanolamines and/or alkylenediamines which comprises thermally reacting ammonia or a reactive amine and an alkylene oxide or alkanolamine in a reactor in which the corrosion-sensitive parts of the reactor are made of substantially nickel-free stainless steel.
- 5. A process for separating by distillation the reaction products of a reaction mixture containing ammonia or a reactive amine and an alkylene oxide or alkanolamine which comprises heating the mixture in an apparatus in which the corrosion-sensitive parts are made of substantially nickel-free stainless steel.
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