Method for producing adipamide as intermediate for production of raw material for bio-based nylon
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsChae-Hwan Hong, Na-Kyong Yun, Ha-Eun Jeong, Sung-Wan Jeon
Life of this patent
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Abstract
Disclosed is a method for producing adipamide, which may include the steps of: (a) reacting glucose, nitric acid (HNO3), sodium nitrite (NaNO2) and potassium hydroxide (KOH) to produce a glucaric acid potassium salt, (b) producing glucamide by reacting the glucaric acid potassium salt, with an acidic solution and removing a potassium ion from the glucaric acid potassium salt, (c) preparing an reaction admixture by adding the glucamide and a catalyst to hydrogen halide and acetic acid, and (d) treating the reaction admixture with hydrogen gas in a reactor thereby producing the adipamide.
Claims19
A method for producing adipamide, comprising the steps of:
- (a) producing a glucaric acid potassium salt by one or more steps comprising reacting glucose, nitric acid (HNO3), sodium nitrite (NaNO2) and potassium hydroxide (KOH);
- (b) producing glucamide by reacting the glucaric acid potassium salt and an acidic solution and removing a potassium ion from the glucaric acid potassium salt;
- (c) preparing a reaction admixture by adding the glucamide and a catalyst to hydrogen halide and acetic acid;
- and
- (d) treating the reaction admixture and hydrogen gas in a reactor thereby producing the adipamide,
- wherein in the step (b), the method comprises:
- removing a potassium ion from the glucaric acid potassium salt by reacting a second mixture comprising the glucaric acid potassium salt and a reaction solvent with the acidic solution;
- and
- adding an aqueous ammonia solution to a substance from which the potassium ion was removed and then adding ethanol thereto to precipitate glucamide particles, and recovering the precipitated glucamide particles.
Dependencies are inferred from the claim text.