Patent US4453979A successfully refreshed from Google Patents.
US4453979A
Expired / Lapsed
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Dispersion of hydrophilic gums to form non-swelling aqueous alcoholic mixtures
Assignee: CPPD Inc A CORP OF
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Filing: 1983-03-23
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Granted: 1984-06-12
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Expires: 2003-03-23
Abstract
Abstract A process is presented for dispersing hydrophilic gums swiftly into formulations containing water wherein the lumping problem is avoided. The method of obtaining lump-free aqueous gum compositions comprises: (a) preparing a blend of water and an effective amount of water-miscible alcohol (I): ##STR1## wherein n and m are the same or different integers from 0 to 500, and when Y is hydrogen, (I) has a molecular weight of at least 200, and when Y is C 1 -C 4 alkyl, (I) has a molecular weight of at least 32; (b) introducing into said aqueous alcohol blend a hydrophilic gum, resulting in a final weight ratio water:gum of about 20:1 to 1.3:1; (c) intimately mixing the resultant slurry; and (d) feeding the slurry into a water containing formulation.
Inventors
- 👤 Dominick F. DeMasi
- 👤 Gregg S. Scheideler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 22:29
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0014; A61K47/00; A61K47/30; A61K47/36; A61K47/38; A61K8/00; A61K8/18; A61K8/72; A61K8/73; A61K8/731; A61K8/737; A61K8/84; A61K8/86; A61Q; A61Q11/00; C; C08; C08L; C08L1/00; C08L1/08; C08L1/26; C08L1/28; A61K2800/00; A61K2800/40; A61K2800/59; A61K2800/594
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
79 words
A method of formulating a lump-free alcohol-water-gum containing composition comprising: (a) preparing a blend of a minor amount of water and a major amount of a polyethylene glycol, solid at room temperature; (b) introducing into the polyethylene glycol-water blend a hydrophilic gum resulting in a final weight ratio water:gum of about 20:1 to 1.3:1 and polyethylene glycol:gum ratio of about 25:1 to 2:1; (c) intimately mixing the resultant slurry; and (d) feeding the slurry into a water containing formulation.
Claim 2
Independent Claim
79 words
A method of formulating a lump-free alcohol-water-gum containing composition comprising: (a) preparing a blend of a minor amount of water and a major amount of a polyethylene glycol, solid at room temperature; (b) introducing into the polyethylene glycol-water blend a hydrophilic gum resulting in a final weight ratio water:gum of about 20:1 to 1.3:1 and polyethylene glycol:gum ratio of about 25:1 to 2:1; (c) intimately mixing the resultant slurry; and (d) feeding the slurry into a water containing formulation.
Claim 3
Dependent Claim
34 words
A method according to claim 1 wherein the gum is selected from the group consisting of sodium carboxyalkyl cellulose, alkyl cellulose, hydroxyalkyl alkylcellulose and mixtures thereof wherein alkyl is C 1 -C 4 .
Claim 4
Dependent Claim
13 words
A method according to claim 1 wherein the gum is sodium carboxymethyl cellulose.
Claim 5
Dependent Claim
14 words
A method according to claim 1 wherein the gum is hydroxymethyl propylcellulose or methylcellulose.
Claim 6
Dependent Claim
24 words
A method according to claim 1 wherein the gum is selected from the group consisting of xanthan, carrageenan, guar, quaternary guar and mixtures thereof.
Claim 7
Dependent Claim
18 words
A method according to claim 1 wherein the water to gum ratio is about 6:1 to about 2:1.
Claim 8
Dependent Claim
31 words
A method for preparing a personal care product selected from the group consisting of toothpaste, shampoo, shaving cream and cosmetics prepared at least in part by the method of claim 1.
Claim 9
Dependent Claim
10 words
A product prepared according to the process of claim 1.
Claim 10
Dependent Claim
25 words
A personal care product selected from the group consisting of toothpaste, shampoo, and cosmetics prepared at least in part by the method of claim 1.
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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) | 1987-06-12 | 1987-12-12 | 1988-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-12 | 1991-12-12 | 1992-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-12 | 1995-12-12 | 1996-06-12 | $7700.00 | Window Closed / Lapsed |