Organic compounds -- part of the class 532-570 series – Organic compounds – Fatty compounds having an acid moiety which contains the...
Patent
1997-03-17
1998-07-21
Geist, Gary
Organic compounds -- part of the class 532-570 series
Organic compounds
Fatty compounds having an acid moiety which contains the...
252 56R, C07C 5100
Patent
active
057837147
ABSTRACT:
A process is disclosed for manufacturing a substantially grit-free calcium salt of an aliphatic carboxylic acid having twelve to twenty-two carbon atoms comprising the steps of (1) conveying into a mixing zone at least one aliphatic carboxylic acid having twelve to twenty-two carbon atoms and a calcium hydroxide product having a maximum particle size of 22 microns, (2) applying heat as necessary, (3) mixing until the reaction has progressed to the desired end point, and (4) discharging calcium carboxylate salt from the mixing zone.
The disclosed process affords a novel calcium salt of a carboxylic acid such as one comprising a calcium stearate substantially free of grit, characterized by a melting range from 131.degree. C. to 159.degree. C., an ash content in the range from 9 to 12% by weight as calcuim oxide, a free fatty acid content not exceeding 1% by weight, a water soluble salt content in the range from 0.001% to 0.1% by weight, and an apparent density in the range from 15 to 25 pounds per cubic foot.
The disclosed process further affords a novel calcium salt of a carboxylic acid substantially free of grit which can be incorporated in polypropylene without excessive extrusion screen pack pressure buildup.
REFERENCES:
Chemical Abstracs 71:72600, 1969.
Chemical Aabstracts 78:18670, 1972.
Chemical Abstracs 80:5502, 1972.
Chemical Abstracts 82:61772, 1974.
Chemical Abstracts 84:138223, 1975.
Chemical Absracs 105:229667, 1986.
Chemical Abstract 114:8456, 1991.
Knott Oscar
McConnell Nina M.
McKenna Arthur L.
Carr Deborah D.
Geist Gary
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