Use of pectin or pectin-like material in water-based ceramics
First Claim
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1. A clay composition consisting of a mixture of clay and alginic acid, or alginate salt, wherein the amount of alginic acid of alginate salt, is from about 0.5 to about 5.0 weight percent.
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Abstract
The use of pectins or the pectin-like materials carboxymethylcellulose, alginic acid, tannins or orthodiphenolic compounds, as additives to clay to provide clay compositions of enhanced plasticity and stability is disclosed.
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20 Claims
- 1. A clay composition consisting of a mixture of clay and alginic acid, or alginate salt, wherein the amount of alginic acid of alginate salt, is from about 0.5 to about 5.0 weight percent.
- 4. A clay composition consisting of a mixture of clay and carboxymethylcellulose, or a salt thereof, wherein the amount of carboxymethylcellulose is from about 0.5 to about 5.0 weight percent.
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7. A clay composition comprising a mixture of clay and an orthodiphenolic compound, wherein the orthodiphenolic compound is added in an amount from about 1.0 to about 10.0 weight percent.
- 8. A clay composition comprising a mixture of clay, an orthodiphenolic compound and pectin or a pectic material.
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12. A method of making a clay mixture, comprising the steps of:
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a. mixing clay with an orthodiphenolic compound, wherein the amount of orthodiphenolic compound is between about 0.5 to 10.0 weight percent; b. allowing the orthodiphenolic compound to react with the clay for a period of approximately one to eight weeks or longer, until the diphenol odor can no longer be detected in the clay mixture; and c. combining the mixture obtained after step (b) with about 0.5 to about 5.0 weight percent pectin, or pectic material. - View Dependent Claims (13, 14, 15, 16)
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- 17. A clay composition consisting of a mixture of clay, tannin and pectin or a pectic material.
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