Patent EP0205744A2 successfully refreshed from Google Patents.
EP0205744A2
Expired / Lapsed
EP
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Energy efficient high solids slurry stabilizers
Assignee: Henkel Corp
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Filing: 1986-02-20
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Granted: —
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Expires: 2006-02-20
Abstract
Abstract High solids slurry stabilizers are provided which are comprised of an acid-sensitive crosslinked polysaccharide and a water-soluble polymer having repeating units derived from an acrylamidoalkanesulfonic acid or the ammonium salt thereof, e.g. a homopolymer of 2-acrylamido-2-methylpropanesulfonic acid. The stabilizer compositions are effective in providing homogeneous stabilized aqueous slurries of finely divided solids, e.g. zircon flour, without the need for high energy mixing. The invention also provides methods for varying high solid slurries using such stabilizer compositions and high solid slurries comprised of such stabilizer compositions. The invention also provides for high solids slurries comprised of a water-soluble polymer having repeating units derived from the ammonium salt of an acrylamidoalkanesulfonic acid as the sole stabilizer and to methods of preparing such slurries.
Inventors
- 👤 Warren W. Howland
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 03:19
CPC Classifications
C; C08; C08L; C08L5/00; C08L5/14; B; B22; B22C; B22C3/00; C08L33/00; C08L33/24; C08L33/26; C09; C09K; C09K23/00; C09K23/017; C08L2201/00; C08L2201/50
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
50 words
A composition useful as a high solids slurry stabilizer comprising an acid-sensitive crosslinked polysaccharide and a water-soluble polymer comprised of repeating units derived from an acrylamidoalkanesulfonic acid or the ammonium salt thereof, wherein the weight ratio of acid-sensitive crosslinked polysaccharide to water-soluble polymer ranges from about 10:1 to about 1:10.
Claim 2
Dependent Claim
50 words
A composition useful as a high solids slurry stabilizer comprising an acid-sensitive crosslinked polysaccharide and a water-soluble polymer comprised of repeating units derived from an acrylamidoalkanesulfonic acid or the ammonium salt thereof, wherein the weight ratio of acid-sensitive crosslinked polysaccharide to water-soluble polymer ranges from about 10:1 to about 1:10.
Claim 3
Dependent Claim
28 words
A stabilizer composition in accordance with claim 1 wherein the weight ratio of the acid-sensitive crosslinked polysaccharide to the water-soluble polymer ranges from about 5:1 to about 1:5.
Claim 4
Dependent Claim
28 words
A stabilizer composition in accordance with claim 1 wherein the weight ratio of the acid-sensitive crosslinked polysaccharide to the water-soluble polymer ranges from about 2:1 to about 1:2.
Claim 5
Dependent Claim
24 words
A stabilizer composition in accordance with claim 1 wherein the weight ratio of the acid-sensitive crosslinked polysaccharide to the water-soluble polymer is about 1:1.
Claim 6
Dependent Claim
18 words
A stabilizer composition in accordance with claim 1 wherein the water-soluble polymer is a homopolymer of 2-acrylamido-2-methylpropanesulfonic acid.
Claim 7
Dependent Claim
17 words
A stabilizer composition in accordance with claim 1 wherein the acid-sensitive crosslinked polysaccharide is a borated galactomannan.
Claim 8
Dependent Claim
15 words
A stabilizer composition in accordance with claim 6 wherein the borated galactomannan is borated guar.
Claim 9
Dependent Claim
14 words
A stabilizer composition in accordance with claim 1 further comprised of a second polysaccharide.
Claim 10
Dependent Claim
15 words
A stabilizer composition in accordance with claim 8 wherein the second polysaccharide is xanthan gum.
Claim 11
Dependent Claim
27 words
A stabilizer composition in accordance with claim 9 wherein the xanthan gum is present in an amount less than about 10% by weight of the stabilizer composition.
Claim 12
Dependent Claim
31 words
A high solids slurry composition comprising a major amount of a finely divided inorganic solid, a minor amount of water, and a stabilizing amount of the stabilizer composition of claim 1.
Claim 13
Dependent Claim
19 words
A high solids slurry composition in accordance with claim 11 wherein the finely divided inorganic solid is zircon flour.
Claim 14
Dependent Claim
38 words
A method of stabilizing a high solids aqueous slurry comprising adding a stabilizing amount of a stabilizer composition in accordance with claim 1 to a high solids aqueous slurry and mixing the slurry to form a homogenous composition.
Claim 15
Dependent Claim
48 words
A method of preparing a high solids aqueous slurry comprising blending a finely divided inorganic solid with a stabilizing amount of a stabilizer composition in accordance with claim 1, adding the resulting blend to an aqueous composition, and then mixing the resulting mixture to form a homogenous composition.
Claim 16
Dependent Claim
47 words
A high solids slurry composition comprising a major amount of a finely divided inorganic solid having a low surface charge density, a minor amount of water, and a stabilizing amount of a water-soluble polymer comprised of repeating units derived from the ammonium salt of an acrylamidoalkanesulfonic acid.
Claim 17
Dependent Claim
47 words
A high solids slurry composition comprising a major amount of a finely divided inorganic solid having a low surface charge density, a minor amount of water, and a stabilizing amount of a water-soluble polymer comprised of repeating units derived from the ammonium salt of an acrylamidoalkanesulfonic acid.
Claim 18
Dependent Claim
20 words
A high solids slurry composition in accordance with claim 15 wherein the water-soluble polymer is a homopolymer of ammonium 2-acrylamido-2-methylpropanesulfonate.
Claim 19
Independent Claim
59 words
A method of stabilizing a high solids aqueous slurry comprising adding a stabilizing amount of a water soluble polymer comprised of repeating units derived from the ammonium salt of an acrylamidoalkanesulfonic acid, to a high solids aqueous slurry wherein the finely divided inorganic solid has a low surface charge density, and mixing the slurry to form a homogeneous composition.
Claim 20
Independent Claim
59 words
A method of stabilizing a high solids aqueous slurry comprising adding a stabilizing amount of a water soluble polymer comprised of repeating units derived from the ammonium salt of an acrylamidoalkanesulfonic acid, to a high solids aqueous slurry wherein the finely divided inorganic solid has a low surface charge density, and mixing the slurry to form a homogeneous composition.
Claim 21
Independent Claim
63 words
A method of preparing a high solids aqueous slurry comprising blending a finely divided inorganic solid having a low surface charge density with a stabilizing amount of a water-soluble polymer comprised of repeating units derived from the ammonium salt of an acrylamidoalkanesulfonic acid, adding the resulting dry blend to an aqueous composition and then mixing the resulting mixture to form a homogenous composition.
Claim 22
Independent Claim
63 words
A method of preparing a high solids aqueous slurry comprising blending a finely divided inorganic solid having a low surface charge density with a stabilizing amount of a water-soluble polymer comprised of repeating units derived from the ammonium salt of an acrylamidoalkanesulfonic acid, adding the resulting dry blend to an aqueous composition and then mixing the resulting mixture to form a homogenous composition.
References Cited (Backward Citations)
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