US 4,307,027 AGranted

Continuous process for preparing dry metallic salts of higher fatty acids

AssigneeDart Industries Inc.

InventorsRichard D. Borzelli, Joseph Cunder

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Abstract

Metallic salts of higher molecular weight fatty acids are produced in a continuous process by feeding fatty acid and base into a plug flow reactor to maintain a residence time of about 2 to about 60 minutes at a temperature of about 75.degree. F. to about 280.degree. F. to obtain a metallic salt, then grinding the metallic salt in a hammer mill to obtain coarse particles and then grinding the coarse particles in a jet mill to obtain fine particles of the metallic salt. Optionally, the fatty acid and base may be fed initially into a stirred-tank reactor to maintain a residence time of about 10 to about 80 minutes at a temperature of from about 115.degree. F. to about 300.degree. F. to initiate metallic salt reaction before feeding the metallic salt reaction mixture into the plug flow reactor.

Claims6

Dependent claims

A continuous process for producing a metallic salt of a higher fatty acid comprising:

(a) feeding a higher fatty acid and a base at an effective rate to a stirred-tank reactor to maintain a liquid state with a residence time in the stirred-tank reactor of from about 10 to about 80 minutes and a temperature of from about 115.degree. F. to about 300.degree. F. to initiate metallic salt reaction, then
(b) discharging the liquid metallic salt from the stirred-tank reactor, thereafter
(c) feeding the liquid metallic salt into a plug flow reactor at an effective rate to maintain a residence time in the reactor of from about 2 to about 60 minutes and a temperature of about 75.degree. F. to about 280.degree. F. to complete metallic salt reaction and obtain a solid metallic salt, then
(d) discharging the solid metallic salt from the plug flow reactor, thereafter
(e) feeding the solid metallic salt into a hammer mill, then
(f) grinding the metallic salt in the hammer mill to obtain the salt in form of coarse particles, thereafter
(g) feeding the coarse particles to a jet mill, and then
(h) grinding the coarse particles in the jet mill to obtain the salt in form of fine particles.

5 more elements

Dependencies are inferred from the claim text.