Organic compounds -- part of the class 532-570 series – Organic compounds – Carboxylic acids and salts thereof
Patent
1980-08-11
1983-12-13
Shippen, Michael L.
Organic compounds -- part of the class 532-570 series
Organic compounds
Carboxylic acids and salts thereof
239424, 239433, C07C12502
Patent
active
044206356
ABSTRACT:
This invention provides a dispensing assembly which is adapted to deliver two separate instantaneously coreactive liquid streams into an external contacting zone. The two reactants do not make contact within the body of the dispensing assembly, which prevents solid product formation and clogging within the dispensing assembly nozzles.
The dispensing assembly is suitable for the coreaction of liquid carbon dioxide and liquid ammonia to produce free-flowing ammonium carbamate powder having a purity of substantially 100 percent.
REFERENCES:
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patent: 2194082 (1940-03-01), Booth
patent: 2777877 (1957-01-01), Fauser
patent: 3284537 (1966-11-01), Webb
patent: 3816528 (1974-06-01), Cook
Inorganic Synthesis, vol. 2 (1946), 85-86; Brooks et al. #23 Ammonium Carbamate.
Kirk-Othmer Encyclopedia of Chem. Tech., vol. 21 (1970) 40-41 "Urea Synthesis".
CA15:1499 C. Matignon et al., "The Dissociation of Ammonium Carbamate".
CA16:2628 C. Matignon et al., "Conditions Governing the Formation and Stability of Ammonium Carbamate".
CA16:2629 C. Matignon et al., "The Transformation of Ammonium Carbamate".
CA46:3835 "Reaction Between Ammonia and Carbon Dioxide Under High Pressure" Kiyama et al.
Considine, Douglas M. Chemical and Process Technology Encyclopedia (McGraw Hill, 1974), 1118-1121.
Fillenwarth Dale R.
Utsch Francis V.
Washington James M.
Inskeep George E.
Palmer, Jr. Arthur I.
Philip Morris Inc.
Shippen Michael L.
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