Patent US3335327A successfully refreshed from Google Patents.
US4548734A
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US
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Water soluble gum/polymer compositions and hydrosols prepared therefrom
Assignee: Rhone Poulenc Specialites Chimiques
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Filing: 1983-01-25
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Granted: 1985-10-22
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Expires: 2003-01-25
Abstract
Abstract Compositions of matter, desirably in powder form, adapted for ready dispersion/dissolution in an aqueous medium, and which rapidly provide maximum viscosity values therefor, are comprised of an intimate admixture of a water soluble gum or polymer, a dispersion/dissolution enhancing amount of a water donor material, and, advantageously, an anionic and/or nonionic surfactant.
Inventors
- 👤 Jean-Bernard Chaux
- 👤 Pierre Gagne
- 👤 Michel Garcia
- 👤 Dominique Lespinasse
- 👤 Josiane Roussos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:42
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/05; C08L; C08L5/00; C08L57/00; C08J2300/00; C08J2300/10
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
73 words
A composition of matter adapted for ready dispersion/dissolution in an aqueous medium, comprising intimate admixture of a water soluble gum or polymer, and a dispersion/dissolution enhancing amount of a water donor material therefore, the amount of water being such that the ratio by weight of the gum or polymer thereto ranges from 6.5 to 1, and the ratio by weight of the water donor to the water therein ranges from 0.3 to 2.6.
Claim 2
Dependent Claim
73 words
A composition of matter adapted for ready dispersion/dissolution in an aqueous medium, comprising intimate admixture of a water soluble gum or polymer, and a dispersion/dissolution enhancing amount of a water donor material therefore, the amount of water being such that the ratio by weight of the gum or polymer thereto ranges from 6.5 to 1, and the ratio by weight of the water donor to the water therein ranges from 0.3 to 2.6.
Claim 3
Dependent Claim
29 words
The composition of matter as defined by claim 1, said water soluble gum or polymer comprising a natural gum, a modified natural gum, a synthetic polymer, or admixture thereof.
Claim 4
Dependent Claim
39 words
The composition of matter as defined by claim 2, said water soluble gum or polymer comprising at least one of the natural gums, agar-agar, an alginate, a carrageenate, gum arabic, gum tragacanth, carob gum, guar gum, pectin or gelatin.
Claim 5
Dependent Claim
18 words
The composition of matter as defined by claim 2, said water soluble gum or polymer comprising a cellulosic.
Claim 6
Dependent Claim
22 words
The composition of matter as defined by claim 4, said cellulosic comprising methylcellulose, ethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, ethylhydroxyethylcellulose, sodium carboxymethylcellulose, or sodium carboxymethylhydroxyethylcellulose.
Claim 7
Dependent Claim
56 words
The composition of matter as defined by claim 2, said water soluble gum or polymer comprising at least one of the water soluble synthetic polymers, a polyvinyl alcohol, a polyvinylpyrrolidone, a polyvinyl methyl ether, a polyacrylic or polymethacrylic acid, or salt or ester thereof, a polyacrylamide or polymethacrylamide, a polyalkylene oxide, or water soluble derivative thereof.
Claim 8
Dependent Claim
44 words
The composition of matter as defined by claim 2, said water soluble gum or polymer comprising at least one polymer or copolymer of acrylamide, methacrylamide, acrylonitrile, methacrylonitrile, acrylic acid or methacrylic acid, or salt or ester thereof, or optionally quaternized aminoalkyl acrylate or methacrylate.
Claim 9
Dependent Claim
44 words
The composition of matter as defined by claim 2, said water donor comprising a finely divided silica, a hydrated silica gel, a dehydrated silica gel, an alumina hydrate, an argilla, a natural or synthetic zeolite, or a hydrate of an inorganic or organic salt.
Claim 10
Dependent Claim
65 words
The composition of matter as defined by claim 2, said water donor comprising a finely divided silica having a BET surface of 200 to 400 m 2 /g and a particle diameter ranging from 200 to 800 Å, or a hydrate of at least one sodium, potassium, calcium or magnesium carbonate, halide, nitrate, phosphate, silicate, sulfate, acetate, citrate, lactate, laurate or tartrate, or mixture thereof.
Claim 11
Dependent Claim
28 words
The composition of matter as defined by claim 2, said water donor comprising a finely divided silica capable of sorbing 2 to 3 times its weight of water.
Claim 12
Dependent Claim
19 words
The composition of matter as defined by claim 2, further comprising an anionic or nonionic surfactant, or mixture thereof.
Claim 13
Dependent Claim
46 words
The composition of matter as defined by claim 11, said surfactant comprising an alkali metal soap, an alkali sulfonate, a sulfate or sulfated compound, an alkaline phosphate, a polyoxyalkylene alkylphenol, an aliphatic polyoxyalkylene alcohol, a fatty amide, or a polyoxyethylene or polyoxypropylene compound, or mixture thereof.
Claim 14
Dependent Claim
23 words
The composition of matter as defined by claim 12, said surfactant comprising a sodium alkylsulfosuccinate, a sodium alkylnaphthalene sulfonate, or a sulfonated olefin.
Claim 15
Dependent Claim
15 words
The composition of matter as defined by claim 13, said surfactant comprising sodium diisopropylnaphthalene sulfonate.
Claim 16
Dependent Claim
23 words
The composition of matter as defined by claim 11, wherein the ratio by weight of the surfactant thereto is no greater than 0.10.
Claim 17
Dependent Claim
15 words
The composition of matter as defined by claim 2, said water donor comprising bound water.
Claim 18
Dependent Claim
16 words
The composition of matter as defined by claim 2, said water donor comprising water of crystallization.
Claim 19
Dependent Claim
15 words
The composition of matter as defined by claim 2, said water donor comprising sorbed water.
Claim 20
Dependent Claim
23 words
The composition of matter as defined by claim 2, said water donor adapted to sorb and retain water from an external aqueous medium.
Claim 21
Dependent Claim
13 words
The composition of matter as defined by claim 2, comprising a free-flowing powder.
Claim 22
Dependent Claim
57 words
The composition of matter as defined by claim 2, comprising from 30 to 70% by weight of the water soluble gum or polymer; from 7 to 40% by weight of the water donor; from 0 to 10% by weight of an anionic or nonionic surfactant, or mixture thereof; and from 15 to 37% by weight of water.
Claim 23
Dependent Claim
51 words
The composition of matter as defined by claim 21, comprising from 50 to 60% by weight of the water soluble gum or polymer; from 8 to 15% by weight of the water donor; from 3 to 7% by weight of the surfactant; and from 24 to 36% by weight of water.
Claim 24
Dependent Claim
125 words
A composition of matter adapted for ready dispersion/dissolution in an aqueous medium, comprising intimate admixture of a water soluble gum or polymer, and a dispersion/dissolution enhancing amount of a water donor material therefor comprising a finely divided silica having a BET surface of 200 to 400 m 2 /g and a particle diameter ranging from 200 to 800 Å or a hydrate of at least one sodium, potassium, calcium or magnesium carbonate, halide, nitrate, phosphate, silicate, sulfate, acetate, citrate, laurate or tartrate, or mixture thereof, the amount of water being such that the ratio by weight of the gum or polymer thereto ranges from 6.5 to 1, and the ratio by weight of the water donor to the water therein ranges from 0.3 to 2.6.
Claim 25
Dependent Claim
125 words
A composition of matter adapted for ready dispersion/dissolution in an aqueous medium, comprising intimate admixture of a water soluble gum or polymer, and a dispersion/dissolution enhancing amount of a water donor material therefor comprising a finely divided silica having a BET surface of 200 to 400 m 2 /g and a particle diameter ranging from 200 to 800 Å or a hydrate of at least one sodium, potassium, calcium or magnesium carbonate, halide, nitrate, phosphate, silicate, sulfate, acetate, citrate, laurate or tartrate, or mixture thereof, the amount of water being such that the ratio by weight of the gum or polymer thereto ranges from 6.5 to 1, and the ratio by weight of the water donor to the water therein ranges from 0.3 to 2.6.
Claim 26
Dependent Claim
18 words
A sol comprising dispersion/solution of the composition of matter as defined by claim 1, in an aqueous medium.
Claim 27
Dependent Claim
21 words
The sol as defined by claim 24, comprising from 0.3 to 10% by weight of said water soluble gum or polymer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-21 | 1989-04-22 | 1989-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-21 | 1993-04-22 | 1993-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-21 | 1997-04-22 | 1997-10-22 | $7700.00 | Window Closed / Lapsed |