Dry powder lithium carboxylates
First Claim
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1. A process for the preparation of lithium carboxylate compounds of four or more carbon atoms and recovering the product without filtration which comprises the steps of:
- a) adding at least one molten carboxylic acid or glyceride ester thereof having at least four carbon atoms to a heated reaction vessel with high shear stirring;
b) adding the requisite amount of concentrated lithium hydroxide aqueous solution or lithium hydroxide monohydrate crystals;
c) heating the stirred mixture to a temperature of at least 80°
C., and then;
d) heating and stirring the resulting lithium carboxylate mixture until dry.
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Abstract
The invention provides a process for preparing lithium carboxylates which can be used in the preparation of soaps, oils and greases. The process utilizes molten carboxylic acids in a reaction utilizing a minimum of water and provides a powdery product which does not need filtration.
16 Citations
9 Claims
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1. A process for the preparation of lithium carboxylate compounds of four or more carbon atoms and recovering the product without filtration which comprises the steps of:
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a) adding at least one molten carboxylic acid or glyceride ester thereof having at least four carbon atoms to a heated reaction vessel with high shear stirring;
b) adding the requisite amount of concentrated lithium hydroxide aqueous solution or lithium hydroxide monohydrate crystals;
c) heating the stirred mixture to a temperature of at least 80°
C., and then;
d) heating and stirring the resulting lithium carboxylate mixture until dry. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A process for manufacturing lithium carboxylate compounds of four or more carbon atoms which comprise the following steps:
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a) adding at least one molten carboxylic acid or glyceride ester thereof having at least four carbon atoms to a reactor with high shear stirring and heating to a temperature of a least 80°
C.;
b) adding a stoichiometric amount of lithium hydroxide as monohydrate crystals or concentrated solutions thereof;
c) heating the stirred mixture above 80°
until reacted; and
thend) heating and stirring the resulting lithium carboxylate mixture until dry. - View Dependent Claims (9)
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Specification
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Current AssigneeSQM North America Corp. (Sociedad Quimica y Minera de Chile SA)
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Original AssigneeLithchem International
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InventorsSmith, W. Novis, McCloskey, Joel
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Primary Examiner(s)Carr, Deborah D.
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Application NumberUS09/564,972Time in Patent Office761 DaysField of Search554/195, 554/178, 554/156, 562/552, 562/512, 106/156.24, 502/170, 508/523, 508/491, 508/486, 508/539US Class Current554/156CPC Class CodesC07C 51/412 by conversion of the acids,...C07C 59/01 Saturated compounds having ...C10M 2207/1265 used as thickening agentC10M 2207/1276 used as thickening agentC10M 2207/1285 used as thickening agentsC10N 2010/02 Groups 1 or 11C10N 2050/10 Semi-solids; greasyC10N 2070/00 Specific manufacturing meth...
