Mold wash composition
AssigneeNL Industries, Inc.
InventorsJames Van Fisk, Jr., John W. Jordan
Life of this patent
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Abstract
A composition for preparing water based mold washes which contains a clay of high swelling capacity in water, certain water soluble acrylic polymers, a particulate, refractory material and a solids suspension control agent comprised of a peptizer and a flocculant.
Claims47
A composition for use in a mold wash formulation comprising an intimate, dry mixture of a water soluble polymer of a monoolefinic carboxylic acid monomer having the general formula:
- ##STR5## wherein R is selected from the class consisting of hydrogen, monovalent alkyl radicals, monovalent aryl radicals, monovalent aralkyl radicals, monovalent alkaryl radicals and monovalent cycloaliphatic radicals, a clay having a liquid limit number of greater than 600 with high swelling capacity in water, and a solids suspension control additive comprising (a) a flocculant comprising a water soluble salt of a polyvalent metal ion, and (b) a peptizing agent.
A formulation for use in preparing a mold wash comprising an intimate, dry mixture of a water soluble polymer of a monoolefinic carboxylic acid monomer having the general formula:
- ##STR7## wherein R is selected from the class consisting of hydrogen, monovalent alkyl radicals, monovalent aryl radicals, monovlent aralkyl radicals, monovalent alkaryl radicals and monovalent cycloaliphatic radicals, a clay having a liquid limit number of greater than 600 with high swelling capacity in water, a solids suspension control additive comprising (a) a flocculant comprising a water soluble salt of a polyvalent metal ion, and (b) a peptizing agent, and a particulate refractory material.
A mold wash comprising a slurry of:
- a water soluble polymer of a monoolefinic carboxylic acid monomer having the general formula:
- ##STR9## wherein R is selected from the class consisting of hydrogen, monovalent alkyl radicals, monovalent aryl radicals, monovalent aralkyl radicals, monovalent alkaryl radicals and monovalent cycloaliphatic radicals, a clay having a liquid limit number of greater than 600 with high swelling capacity in water, a solids suspension control additive comprising (a) a flocculant comprising a water soluble salt of a polyvalent metal ion, and (b) a peptizing agent, a particulate refractory material, and water.
Dependencies are inferred from the claim text.