Process for producing a calcium carboxylate
AssigneeSolutia Inc.
InventorsAnthony K. Uriarte, Norman J. Peters, Mikhail I. Khramov, Thomas W. Backes, Patrick N. Crowe, Deanna W. Hamilton
Life of this patent
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Abstract
A process for producing a calcium carboxylate comprising contacting a nitrile compound, a calcium compound selected from calcium hydroxide, calcium oxide or mixtures thereof, and water at a temperature of about 90° C. to about 250° C. at a sufficient pressure and for a sufficient time to produce a reaction mixture comprising calcium carboxylate.
Claims40
A process for producing a calcium carboxylate comprising contacting a nitrile compound, a calcium compound selected from calcium hydroxide, calcium oxide or mixtures thereof, and water at a temperature of about 90° C. to about 250° C. at a sufficient pressure and for a sufficient time to produce a reaction mixture comprising calcium carboxylate.
A process for producing a calcium carboxylate comprising
- (a) contacting a nitrile compound, a calcium compound selected from calcium hydroxide, calcium oxide or mixtures thereof, and water in a reaction vessel at a temperature of about 90° C. to about 250° C. at a sufficient pressure and for a sufficient time to produce a first reaction mixture comprising calcium carboxylate, the amide corresponding to said nitrile compound, water and ammonia;
- (b) optionally cooling the first reaction mixture;
- (c) venting the reaction vessel to remove ammonia and produce a second reaction mixture;
- (d) optionally adding additional water to the second reaction mixture;
- (e) heating said second reaction mixture to a suitable temperature to remove additional ammonia and, optionally, water from the second reaction mixture and hydrolyze at least a portion of said amide to produce additional calcium carboxylate;
- and
- (f) recovering the calcium carboxylate.
A process for producing a calcium propionate comprising contacting propionitrile, a calcium compound selected from calcium hydroxide, calcium oxide or mixtures thereof, and water at a temperature of about 90° C. to about 250° C. at a sufficient pressure to achieve the desired temperature and for a sufficient time to produce a reaction mixture comprising calcium propionate;
- wherein the molar ratio of calcium compound to propionitrile is about 0.5:1 to about 0.75:1, and the molar ratio of water to propionitrile is about 5:1 to about 30:1.
A process for producing a calcium propionate comprising
- (a) contacting a propionitrile, a calcium compound selected from calcium hydroxide, calcium oxide or mixtures thereof, and water in a reaction vessel at a temperature of about 90° C. to about 250° C. at a sufficient pressure and for a sufficient time to produce a first reaction mixture comprising calcium propionate, the propionamide, water and ammonia;
- (b) optionally cooling the first reaction mixture;
- (c) venting the reaction vessel to remove ammonia and produce a second reaction mixture;
- (d) optionally adding additional water to the second reaction mixture;
- (e) heating said second reaction mixture to a suitable temperature to remove additional ammonia and, optionally, water from the second reaction mixture and hydrolyze at least a portion of said amide to produce additional calcium propionate;
- and
- (f) recovering the calcium propionate
- wherein the molar ratio of calcium compound to propionitrile is about 0.5:1 to about 0.75:1, and the molar ratio of water to propionitrile is about 5:1 to about 30:1.
Dependencies are inferred from the claim text.