Stabilizer Composition of Microcrystalline Cellulose and Carboxymethylcellulose, Method for Making, and Uses
First Claim
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1. A process for a making a stabilizer composition comprising:
- a) blending a microcrystalline cellulose wetcake with a first carboxymethyl cellulose having a DS of 0.45-0.85 in an amount of 5% to 25% by weight of the total composition;
b) extruding the product of step a);
c) eitheri) blending and subsequently extruding a second carboxymethyl cellulose having a DS of 0.9-1.5 in an amount of 2% to 20% by weight of the total composition, into the product of step b);
orii) preparing a water dispersion comprising the microcrystalline cellulose;
carboxymethylcellulose extrudate of step b) and a second carboxymethyl cellulose having a DS of 0.9-1.5, wherein the second carboxymethyl cellulose is present in an amount of 2% to 20% by weight of the total composition; and
d) drying the product of step c).
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Abstract
The subject matter of this invention is a composition and method of making a water-dispersible, stabilizing colloidal microcrystalline cellulose:xarboxymethylcellulose composition. The method of making the composition does not require a salt solution as an anti-slip agent.
19 Citations
17 Claims
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1. A process for a making a stabilizer composition comprising:
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a) blending a microcrystalline cellulose wetcake with a first carboxymethyl cellulose having a DS of 0.45-0.85 in an amount of 5% to 25% by weight of the total composition; b) extruding the product of step a); c) either i) blending and subsequently extruding a second carboxymethyl cellulose having a DS of 0.9-1.5 in an amount of 2% to 20% by weight of the total composition, into the product of step b);
orii) preparing a water dispersion comprising the microcrystalline cellulose;
carboxymethylcellulose extrudate of step b) and a second carboxymethyl cellulose having a DS of 0.9-1.5, wherein the second carboxymethyl cellulose is present in an amount of 2% to 20% by weight of the total composition; andd) drying the product of step c). - View Dependent Claims (2, 3, 4, 7, 8, 9)
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5. A stabilizer composition comprising
a) microcrystalline cellulose, and b) a mixture of a first carboxymethyl cellulose having a DS of 0.45-0.85 in an amount of 5% to 25% by weight of the total composition and a second carboxymethyl cellulose having a DS of 0.9-1.5 in an amount of 2%-20% by weight of the total composition, wherein the stabilizer composition has an initial viscosity of at least 750 cps, a set-up viscosity of at least 3200 cps, and a set-up gel strength G′ - of at least 20 Pa when dispersed in water at 2.6% solids concentration.
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6. A stabilizer composition comprising
a) microcrystalline cellulose; - and
b) a mixture of i. a first carboxymethyl cellulose having a DS of 0.45-0.85 in an amount of 5%-25% by weight of the composition, and ii. a second carboxymethyl cellulose having a DS of 0.9-1.0, wherein the composition is made by the following sequential process steps; 1. co-extruding a microcrystalline cellulose wetcake with a first carboxymethyl cellulose having a DS of 0.45-0.85 for sufficient attrition and interaction; 2. either i) blending a second carboxymethyl cellulose having a DS of 0.9-1.0 into the product of step 1, followed by extruding;
orii) preparing a water dispersion comprising the microcrystalline cellulose;
carboxymethyl cellulose extrudate of step 1 and a second carboxymethyl cellulose having a DS of 0.9-1.0; and3. drying the product of step 2. - View Dependent Claims (17)
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10. A stabilizer composition comprising
a) microcrystalline cellulose; -
b) a carboxymethyl cellulose having a DS of 0.45-0.85 in an amount of 5%-25% by weight of the composition; and c) at least one additional hydrocolloid in an amount of 5%-50% by weight of the composition; wherein the composition is made by the following sequential process steps; i. co-extruding a microcrystalline cellulose wetcake with a carboxymethyl cellulose having a DS of 0.45-0.85 in an amount of 5%-25% by weight of the composition for sufficient attrition and interaction; ii. either (a) preparing a water dispersion comprising the microcrystalline cellulose;
carboxymethyl cellulose extrudate of step i and at least one additional hydrocolloid;
or(b) blending in at least one additional hydrocolloid to the product of step i., then extruding the admixture; and iii. drying the product of step ii. - View Dependent Claims (11, 12, 13, 14)
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15. An industrial suspension comprising a composition comprising microcrystalline cellulose, a first water-soluble carboxymethylcellulose having a degree of substitution of about 0.45 to about 0.85, and a second water-soluble carboxymethylcellulose having a degree of substitution of about 0.9 to about 1.5,wherein the weight ratio of the microcrystalline cellulose and the carboxymethyl cellulose is from about 95:
- 5 to about 70;
30, wherein upon dispersion in water at 2.6% solids the stabilizer composition has an initial viscosity of at least 750 cps, a set-up viscosity of at least 3200 cps, and a set-up gel strength G′
of at least 20 Pa, and wherein the stabilizing suspension is adapted for use in a pharmaceutical product, a nutraceutical product, a cosmetic product, a personal care product, a consumer product, a agricultural product, or a chemical formulation. - View Dependent Claims (16)
- 5 to about 70;
Specification