US4471871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaged dry-to-the-touch article and method of packaging the article
Assignee: Lever Brothers Co
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Filing: 1982-11-26
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Granted: 1984-09-18
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Expires: 2002-11-26
Abstract
Abstract A substantially dry-to-the-touch article contained in a closed, moisture impervious container, comprises a matrix of polysaccharide and/or protein and a non-aqueous liquid having a dielectric constant of from 1.5 to 40 included within the matrix. The article although apparently dry is capable of releasing the included non-aqueous liquid when contacted with water. The article can form a sheet or wad of fabric or it can be presented in the form of a tablet or powder.
Inventors
- 👤 Jeffrey W. Rockliffe
- 👤 Edward G. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:43
CPC Classifications
A; A23; A23L; A23L27/00; A23L27/70; A23F; A23F3/00; A23F3/40; A23F3/405; A23L2/00; A23L2/52; A61; A61K; A61K8/00; A61K8/02; A61K8/0204; A61K8/18; A61K8/30; A61K8/64; A61K8/65; A61K8/72; A61K8/73; A61K8/731; A61K8/732; A61L; A61L15/00; A61L15/16; A61L15/20; A61L15/22; A61L15/28; A61L15/42; A61L15/46; A61L9/00; A61L9/01; A61L9/015; A61L9/04; A61L9/042; A61Q; A61Q11/00; A61Q15/00; A61K2800/00; A61K2800/40; A61K2800/56; A61L2300/00; A61L2300/40; A61L2300/404; A61L2300/408; A61L2300/41; Y; Y10; Y10S; Y10S428/00; Y10S428/905; Y10S428/913; Y10T; Y10T428/00; Y10T428/23; Y10T428/237; Y10T428/24; Y10T428/24777; Y10T428/24793
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
86 words
A substantially dry-to-the-touch article contained in a closed, moisture impervious container, the article comprising: (i) a matrix of polymer selected from the group consisting of polysaccharide, protein and mixtures thereof; and (ii) a non-aqueous liquid, having a dielectric constant of from 1.5 to 40, included within the matrix; the weight ratio of the non-aqueous liquid to the matrix being from 1:1000 to 1:1; the non-aqueous liquid being included in the matrix in such a manner that it is releasable when the article is contacted with water.
Claim 2
Dependent Claim
86 words
A substantially dry-to-the-touch article contained in a closed, moisture impervious container, the article comprising: (i) a matrix of polymer selected from the group consisting of polysaccharide, protein and mixtures thereof; and (ii) a non-aqueous liquid, having a dielectric constant of from 1.5 to 40, included within the matrix; the weight ratio of the non-aqueous liquid to the matrix being from 1:1000 to 1:1; the non-aqueous liquid being included in the matrix in such a manner that it is releasable when the article is contacted with water.
Claim 3
Dependent Claim
11 words
The article according to claim 1, wherein the polysaccharide is cellulose.
Claim 4
Dependent Claim
12 words
The article according to claim 2, wherein the cellulose is regenerated cellulose.
Claim 5
Dependent Claim
14 words
The article according to claim 2, wherein the cellulose is a chemically modified cellulose.
Claim 6
Dependent Claim
11 words
The article according to claim 1, wherein the polysaccharide is starch.
Claim 7
Dependent Claim
14 words
The article according to claim 5, wherein the starch is a chemically modified starch.
Claim 8
Dependent Claim
11 words
The article according to claim 1, wherein the protein is keratin.
Claim 9
Dependent Claim
26 words
The article according to claim 7, wherein the keratin is derived from hair selected from the group consisting of animal wool, human hair and mixtures thereof.
Claim 10
Dependent Claim
11 words
The article according to claim 1, wherein the protein is casein.
Claim 11
Dependent Claim
19 words
The article according to claim 1, wherein the non-aqueous liquid has a dielectric constant of from 2 to 30.
Claim 12
Dependent Claim
19 words
The article according to claim 1, wherein the non-aqueous liquid comprises an organic solvent containing dissolved therein a solute.
Claim 13
Dependent Claim
22 words
The article according to claim 1, wherein the weight ratio of the non-aqueous liquid to the matrix is from 1000 to 1:2.
Claim 14
Dependent Claim
93 words
A process for the manufacture of a substantially dry-to-the-touch article contained in a closed moisture impervious container, according to claim 1, which process comprises the steps of: (i) contacting the matrix of polysaccharide and/or protein with an aqueous liquid; (ii) subsequently contacting the matrix with a first non-aqueous liquid which is miscible with the aqueous liquid and which has a dielectric constant of from 1.5 to 40; (iii) drying the matrix to remove superficial remains of liquid to provide a dry-to-the-touch article; and (iv) packaging the article in a closed moisture impervious container.
Claim 15
Dependent Claim
115 words
A process for the manufacture of a substantially dry-to-the-touch article contained in a closed, moisture impervious container according to claim 1, which process comprises the steps of: (i) contacting the matrix of polysaccharide and/or protein with a first non-aqueous liquid chosen from a C 1 to C 4 alkanol, aldehyde or ketone or mixtures thereof with water; (ii) subsequently contacting the matrix with a second non-aqueous liquid which is miscible with the first and which has a dielectric constant which is lower than that of the first non-aqueous liquid; (iii) drying the matrix to remove superficial remains of liquid to provide a dry-to-the-touch article; and (iv) packaging the article in a closed moisture impervious container.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-18 | 1988-03-19 | 1988-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-18 | 1992-03-19 | 1992-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-18 | 1996-03-19 | 1996-09-18 | $7700.00 | Window Closed / Lapsed |