US4519844A
Expired / Lapsed
US
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Water soluble biogum compositions and hydrosols prepared therefrom
Assignee: Rhone Poulenc Specialites Chimiques
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Filing: 1983-01-25
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Granted: 1985-05-28
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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 biogum heteropolysaccharide, 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
2026-11-03 11:47
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/03; C08J3/05; C08K; C08K3/00; C08K3/34; C08K3/36; C08J2305/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
62 words
A composition of matter adapted for ready dispersion/dissolution in an aqueous medium, comprising an intimate admixture of from 30 to 70% by weight of a water soluble biogum heteropolysaccharide, from 7 to 40% by weight of a dispersion/dissolution enhancing water donor material therefor, from 15 to 37% by weight of water and from 0-10% by weight of an anionic or nonionic surfactant.
Claim 2
Dependent Claim
62 words
A composition of matter adapted for ready dispersion/dissolution in an aqueous medium, comprising an intimate admixture of from 30 to 70% by weight of a water soluble biogum heteropolysaccharide, from 7 to 40% by weight of a dispersion/dissolution enhancing water donor material therefor, from 15 to 37% by weight of water and from 0-10% by weight of an anionic or nonionic surfactant.
Claim 3
Dependent Claim
34 words
The composition of matter as defined by claim 1, said biogum heteropolysaccharide comprising product of fermentation of a carbohydrate with bacteria of the genera Xanthomonas or Arthrobacter, or with fungi of the genus Sclerotium.
Claim 4
Dependent Claim
55 words
The composition of matter as defined by claim 2, said biogum heteropolysaccharide comprising product of fermentation of a carbohydrate with Xanthomonas begoniae, Xanthomonas campestris, Xanthomonas carotea, Xanthomonas hederae, Xanthomonas incanae, Xanthomonas malvacearum, Xanthomonas papavericola, Xanthomonas phaseoli, Xanthomonas pisi, Xanthomonas vasculorum, Xanthomonas vesicatoria, Xanthomonas vitians, Xanthomonas pelargonii, Arthrobacter stabilis, Arthrobacter viscosus, Sclerotium glucanicum or Sclerotium rolfsii.
Claim 5
Dependent Claim
29 words
The composition of matter as defined by claim 3, said biogum heteropolysaccharide comprising product of fermentation of a carbohydrate with Xanthomonas begoniae, Xanthomonas campestris, Xanthomonas incanae or Xanthomonas pisi.
Claim 6
Dependent Claim
22 words
The composition of matter as defined by claim 4, said biogum heteropolysaccharide comprising product of fermentation of a carbohydrate with Xanthomonas campestris.
Claim 7
Dependent Claim
16 words
The composition of matter as defined by claim 1, said biogum heteropolysaccharide comprising a Xanthan gum.
Claim 8
Dependent Claim
44 words
The composition of matter as defined by claim 1, 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 9
Dependent Claim
39 words
The composition of matter as defined by claim 1, said water donor comprising 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 10
Dependent Claim
86 words
The composition of matter as defined by claim 1, 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, a hydrated silica gel, a dehydrated silica gel, an alumina hydrate, a hydrargillite, a bentonite, an attapulgite, a zeolite 4A, sodium sulfate decahydrate, sodium carbonate decahydrate, sodium phosphate dodecahydrate, sodium acetate trihydrate, sodium citrate pentahydrate, calcium chloride hexahydrate, calcium lactate pentahydrate, magnesium chloride hexahydrate or magnesium nitrate hexahydrate.
Claim 11
Dependent Claim
28 words
The composition of matter as defined by claim 1, 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 1, 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 polyalkylene 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
32 words
The composition of matter as defined by claim 1, the same comprising an amount of water such that the ratio by weight of the biogum heteropolysaccharide thereto ranges from 6.5 to 1.
Claim 17
Dependent Claim
27 words
The composition of matter as defined by claim 15, wherein the ratio by weight of the water donor to the water therein ranges from 0.3 to 2.6.
Claim 18
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 19
Dependent Claim
15 words
The composition of matter as defined by claim 1, said water donor comprising bound water.
Claim 20
Dependent Claim
16 words
The composition of matter as defined by claim 1, said water donor comprising water of crystallization.
Claim 21
Dependent Claim
15 words
The composition of matter as defined by claim 1, said water donor comprising sorbed water.
Claim 22
Dependent Claim
23 words
The composition of matter as defined by claim 1, said water donor adapted to sorb and retain water from an external aqueous medium.
Claim 23
Dependent Claim
13 words
The composition of matter as defined by claim 1, comprising a free-flowing powder.
Claim 24
Dependent Claim
50 words
The composition of matter as defined by claim 1, comprising from 50 to 60% by weight of the water soluble biogum heteropolysaccharide; 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 25
Dependent Claim
18 words
A sol comprising dispersion/solution of the composition of matter as defined by claim 1, in an aqueous medium.
Claim 26
Dependent Claim
18 words
The sol as defined by claim 24, comprising from 0.2 to 2% by weight of said biogum heteropolysaccharide.
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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) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |