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US4178254A
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US
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Fabric care compositions containing smectite clay and starch
Assignee: Procter and Gamble Co
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Filing: 1978-03-13
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Granted: 1979-12-11
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Expires: 1998-03-13
Abstract
Abstract Fabric care compositions are described containing a combination of smectite clay fabric softeners and a gelatinized starch sizing material. The compositions provide a desirable firm, crisp structure with a soft surface to fabrics treated in water dispersions of the composition.
Inventors
- 👤 John W. Leikhim
- 👤 Sharon J. Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:00
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/1253; C11D3/1266; C11D3/16; C11D3/20; C11D3/22; C11D3/222; C11D3/38; C11D3/382
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
68 words
A fabric care composition comprising: (a) from about 0.5% to about 75% of a smectite clay selected from the group consisting of alkali metal and alkaline earth metal montmorillonites, saponites, hectorites and mixtures thereof having an ion exchange capacity of at least about 50 meq. per 100 grams; (b) from about 1% to about 90% of a gelatinized vegetable starch; and (c) from 0% to about 98% water.
Claim 2
Dependent Claim
68 words
A fabric care composition comprising: (a) from about 0.5% to about 75% of a smectite clay selected from the group consisting of alkali metal and alkaline earth metal montmorillonites, saponites, hectorites and mixtures thereof having an ion exchange capacity of at least about 50 meq. per 100 grams; (b) from about 1% to about 90% of a gelatinized vegetable starch; and (c) from 0% to about 98% water.
Claim 3
Dependent Claim
40 words
The composition of claim 1 wherein the composition is an aqueous dispersion comprising from about 0.5% to about 15% of smectite clay, from about 1% to about 15% of gelatinized vegetable starch, and from about 50% to about 98% water.
Claim 4
Dependent Claim
34 words
The composition of claim 2 which additionally comprises from about 10% to about 30% of a surface-active detergent selected from the group consisting of anionic, nonionic, zwitterionic and amphoteric surface-active detergents and mixtures thereof.
Claim 5
Dependent Claim
27 words
The compositions of claims 1, 2, or 3 which additionally comprise from about 0.25% to about 8% of a cationic quaternary ammonium anti-static and/or fabric softening agent.
Claim 6
Dependent Claim
28 words
The composition of claims 2 or 3 which comprise from about 1% to about 10% of smectite clay and from about 2% to about 10% gelatinized vegetable starch.
Claim 7
Dependent Claim
11 words
The composition of claim 2 wherein the starch is corn starch.
Claim 8
Dependent Claim
54 words
The composition of claims 2, 3 or 6 wherein the starch is stabilized by exposing a water dispersion of the gelatinized vegetable starch to a pH of from about 10 to about 13 to stabilize said starch and thereafter neutralizing any excess alkali to provide a pH of from about 4 to about 9.
Claim 9
Dependent Claim
74 words
The composition of claims 2, 3, or 6 wherein the starch is gelatinized by holding a water dispersion of said starch at a temperature above its gelatinization temperature for at least 5 minutes and stabilized by exposing said dispersion to a pH of from about 10 to about 13 during at least part of the gelatinization procedure and thereafter neutralizing any excess alkali to provide a pH of from about 4 to about 9.
Claim 10
Dependent Claim
71 words
An aqueous medium for providing fabric care benefits and restoring body to fabrics comprising from about 30 ppm to about 400 ppm of a smectite clay selected from the group consisting of alkali and alkaline earth metal montmorillonites, saponites, hectorites and mixtures thereof, having an ion exchange capacity of at least about 50 meq. per 100 grams and from about 50 ppm to about 500 ppm of a gelatinized vegetable starch.
Claim 11
Dependent Claim
71 words
An aqueous medium for providing fabric care benefits and restoring body to fabrics comprising from about 30 ppm to about 400 ppm of a smectite clay selected from the group consisting of alkali and alkaline earth metal montmorillonites, saponites, hectorites and mixtures thereof, having an ion exchange capacity of at least about 50 meq. per 100 grams and from about 50 ppm to about 500 ppm of a gelatinized vegetable starch.
Claim 12
Dependent Claim
29 words
A method of providing fabric care benefits and restoring body to fabrics comprising treating fabrics with the aqueous medium of claim 9, rinsing said fabrics and drying said fabrics.
References Cited (Backward Citations)
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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) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |