US4695394A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thickened aqueous cleanser
Assignee: Clorox Co
•
Filing: 1985-05-30
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Granted: 1987-09-22
•
Expires: 2005-05-30
Abstract
Abstract The present invention discloses various embodiments and examples of a thickened aqueous abrasive cleanser capable of maintaining a smoothly flowable or plastic consistency over long periods of time. The cleanser is characterized by the ability to stably suspend abrasives while exhibiting excellent shelf stability over long periods of time with substantially no syneresis and being suitable for use where environmental requirements prevent the use of phosphates. This cleaner has the following ingredients: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron; (b) an electrolyte/buffer; (c) a surfactant system including two surfactant components, one surfactant component comprising a fatty acid anionic surfactant, the other surfactant component comprising a selected bleach-stable surfactant or mixed surfactant; (d) a bleach; and (e) a particulate abrasive having an average particle size of about one to as much as 400 microns to provide scouring action. Methods of use and preparation for the cleansers of the present invention are also set forth.
Inventors
- 👤 Clement K. Choy
- 👤 Frederick I. Keen
- 👤 Aram Garabedian
- 👤 Colleen J. Spurgeon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:28
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/02; C11D3/12; C11D3/1213; C11D17/00; C11D17/0008; C11D17/0013; C11D3/14; C11D3/395; C11D3/3956
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
158 words
An aqueous hard surface abrasive scouring cleanser characterized by compliance with environmental requirements for being substantially free of phosphate components, comprising: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about one to fifteen percent by weight of the cleanser; (b) a non-phospate electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; (c) a surfactant system including two surfactant components, one surfactant component comprising a fatty acid anionic surfactant, the other surfactant component comprising a selected bleach-stable surfactant, the surfactant system forming about 0.1 to 15% by weight of the cleanser; (d) a halogen bleach forming about 0.1 to 5 percent of the cleanser; (e) a particulate abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the particulate abrasive forming about 5 to 70 percent by weight of the cleanser.
Claim 2
Dependent Claim
158 words
An aqueous hard surface abrasive scouring cleanser characterized by compliance with environmental requirements for being substantially free of phosphate components, comprising: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about one to fifteen percent by weight of the cleanser; (b) a non-phospate electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; (c) a surfactant system including two surfactant components, one surfactant component comprising a fatty acid anionic surfactant, the other surfactant component comprising a selected bleach-stable surfactant, the surfactant system forming about 0.1 to 15% by weight of the cleanser; (d) a halogen bleach forming about 0.1 to 5 percent of the cleanser; (e) a particulate abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the particulate abrasive forming about 5 to 70 percent by weight of the cleanser.
Claim 3
Dependent Claim
24 words
The cleanser of claim 1 wherein the colloidal alumina thickener has a maximum particle size in dispersion of no more than about 0.1 micron.
Claim 4
Dependent Claim
11 words
The cleanser of claim 1 wherein the electrolyte/buffer is a silicate.
Claim 5
Dependent Claim
12 words
The cleanser of claim 1 wherein the electrolyte/buffer is a carbonate material.
Claim 6
Dependent Claim
14 words
The cleanser of claim 1 wherein the fatty acid anionic surfactant component is monovalent.
Claim 7
Dependent Claim
17 words
The cleanser of claim 1 wherein the selected bleach-stable surfactant component is an amine oxide nonionic surfactant.
Claim 8
Dependent Claim
19 words
The cleanser of claim 1 wherein the selected bleach-stable surfactant component comprises a mixture of anionic and nonionic surfactants.
Claim 9
Dependent Claim
22 words
The cleanser of claim 7 wherein the anionic surfactant is a secondary alkane sulfonate and the nonionic surfactant is an amine oxide.
Claim 10
Dependent Claim
26 words
The cleanser of claim 1 wherein the selected bleach-stable surfactant component is selected from the group consisting of anionic, nonionic, amphoteric, zwitterionic surfactants, and mixtures thereof.
Claim 11
Dependent Claim
34 words
The cleanser of claim 1 wherein the selected bleach-stable surfactant component comprises an anionic surfactant selected from the group consisting of alkali metal sulfates, secondary alkane sulfonates, linear alkyl benzene sulfonates, and mixtures thereof.
Claim 12
Dependent Claim
23 words
The cleanser of claim 1 wherein the particulate abrasive comprises silica sand having an average particle size of about one to 400 microns.
Claim 13
Dependent Claim
111 words
A thickened aqueous cleanser characterized by a consistency which remains smoothly flowable or plastic, comprising: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal thickener forming about 1 to 15 percent by weight of the cleanser; (b) an abrasive having an average particle size of about one to 400 microns to provide scouring action, the abrasive forming about 5 to 70 percent by weight of the cleanser; (c) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; and (d) a fatty acid anionic surfactant forming about 0.1 to 5 percent by weight of the cleanser.
Claim 14
Dependent Claim
111 words
A thickened aqueous cleanser characterized by a consistency which remains smoothly flowable or plastic, comprising: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal thickener forming about 1 to 15 percent by weight of the cleanser; (b) an abrasive having an average particle size of about one to 400 microns to provide scouring action, the abrasive forming about 5 to 70 percent by weight of the cleanser; (c) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; and (d) a fatty acid anionic surfactant forming about 0.1 to 5 percent by weight of the cleanser.
Claim 15
Dependent Claim
11 words
The cleanser of claim 12 wherein the electrolyte/buffer is a silicate.
Claim 16
Dependent Claim
12 words
The cleanser of claim 12 wherein the electrolyte/buffer is a carbonate material.
Claim 17
Dependent Claim
14 words
The cleanser of claim 12 wherein the fatty acid anionic surfactant component is monovalent.
Claim 18
Dependent Claim
28 words
The cleanser of claim 12 further comprising a halogen bleach and the fatty acid anionic surfactant is a saturated soap selected for maintaining bleach stability in the cleanser.
Claim 19
Dependent Claim
13 words
The cleanser of claim 16 further comprising an additional selected bleach-stable surfactant component.
Claim 20
Dependent Claim
26 words
The cleanser of claim 17 wherein the selected bleach-stable surfactant component is selected from the group consisting of anionic, nonionic, amphoteric, zwitterionic surfactants and mixtures thereof.
Claim 21
Dependent Claim
34 words
The cleanser of claim 17 wherein the selected bleach-stable surfactant component comprises an anionic surfactant selected from the group consisting of alkali metal sulfates, secondary alkane sulfonates, linear alkyl benzene sulfonates, and mixtures thereof.
Claim 22
Dependent Claim
17 words
The cleanser of claim 17 wherein the selected bleach-stable surfactant component is an amine oxide nonionic surfactant.
Claim 23
Dependent Claim
19 words
The cleanser of claim 17 wherein the selected bleach-stable surfactant component comprises a mixture of anionic and nonionic surfactants.
Claim 24
Dependent Claim
22 words
The cleanser of claim 21 wherein the anionic surfactant is a secondary alkane sulfonate and the nonionic surfactant is an amine oxide.
Claim 25
Dependent Claim
25 words
The cleanser of claim 12 further comprising an additional surfactant component selected from the group consisting of anionic, nonionic, amphoteric, zwitterionic surfactants, and mixtures thereof.
Claim 26
Dependent Claim
30 words
The cleanser of claim 12 further comprising an additional anionic surfactant selected from the group consisting of alkali metal sulfates, secondary alkane sulfonates, linear alkyl benzene sulfonates, and mixtures thereof.
Claim 27
Dependent Claim
12 words
The cleanser of claim 12 further comprising an amine oxide nonionic surfactant.
Claim 28
Dependent Claim
23 words
The cleanser of claim 12 further comprising an additional surfactant component, the additional surfactant component comprising a mixture of anionic and nonionic surfactants.
Claim 29
Dependent Claim
22 words
The cleanser of claim 26 wherein the anionic surfactant is a secondary alkane sulfonate and the nonionic surfactant is an amine oxide.
Claim 30
Independent Claim
177 words
A method for cleaning hard surfaces comprising the steps of: contacting the hard surface having a stain thereon with a hard surface abrasive scouring cleanser which comprises: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about 1 to 15 percent by weight of the cleanser; (b) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; (c) a surfactant system including two surfactant components, one surfactant component comprising a fatty acid anionic surfactant, the other surfactant component comprising a selected bleach-stable surfactant, the surfactant system forming about 0.1 to 15 percent by weight of the cleanser; (d) a halogen bleach forming about 0.1 to 5 percent by weight of the cleanser; and (e) a particulate abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the particulate abrasive forming about 5 to 70 percent by weight of the cleanser; and removing the cleanser and stain from the hard surface.
Claim 31
Independent Claim
177 words
A method for cleaning hard surfaces comprising the steps of: contacting the hard surface having a stain thereon with a hard surface abrasive scouring cleanser which comprises: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about 1 to 15 percent by weight of the cleanser; (b) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; (c) a surfactant system including two surfactant components, one surfactant component comprising a fatty acid anionic surfactant, the other surfactant component comprising a selected bleach-stable surfactant, the surfactant system forming about 0.1 to 15 percent by weight of the cleanser; (d) a halogen bleach forming about 0.1 to 5 percent by weight of the cleanser; and (e) a particulate abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the particulate abrasive forming about 5 to 70 percent by weight of the cleanser; and removing the cleanser and stain from the hard surface.
Claim 32
Independent Claim
155 words
A method for preparing a hard surface abrasive scouring cleanser comprising the step of combining: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about 1 to 15 percent by weight of the cleanser; (b) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; (c) a surfactant system including two surfactant components, one surfactant component comprising a fatty acid anionic surfactant, the other surfactant component comprising a selected bleach-stable surfactant, the surfactant system forming about 0.1 to 15 percent by weight of the cleanser; (d) a halogen bleach forming about 0.1 to 5 percent by weight of the cleanser; and (e) a particulate abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the particulate abrasive forming about 5 to 70 percent by weight of the cleanser.
Claim 33
Independent Claim
155 words
A method for preparing a hard surface abrasive scouring cleanser comprising the step of combining: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about 1 to 15 percent by weight of the cleanser; (b) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; (c) a surfactant system including two surfactant components, one surfactant component comprising a fatty acid anionic surfactant, the other surfactant component comprising a selected bleach-stable surfactant, the surfactant system forming about 0.1 to 15 percent by weight of the cleanser; (d) a halogen bleach forming about 0.1 to 5 percent by weight of the cleanser; and (e) a particulate abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the particulate abrasive forming about 5 to 70 percent by weight of the cleanser.
Claim 34
Independent Claim
147 words
A method for cleaning with a thickened, aqueous cleanser characterized by a consistency which remains generally continuously flowable or plastic, comprising the steps of: contacting a hard surface having a stain thereon with the thickened, aqueous cleanser comprising: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about 1 to 15 percent by weight of the cleanser; (b) an abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the abrasive forming about 5 to 70 percent by weight of the cleanser; (c) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; and (d) a fatty acid anionic surfactant forming about 0.1 to 5 percent by weight of the cleanser; and removing the cleanser and stain from the surface.
Claim 35
Independent Claim
147 words
A method for cleaning with a thickened, aqueous cleanser characterized by a consistency which remains generally continuously flowable or plastic, comprising the steps of: contacting a hard surface having a stain thereon with the thickened, aqueous cleanser comprising: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about 1 to 15 percent by weight of the cleanser; (b) an abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the abrasive forming about 5 to 70 percent by weight of the cleanser; (c) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; and (d) a fatty acid anionic surfactant forming about 0.1 to 5 percent by weight of the cleanser; and removing the cleanser and stain from the surface.
Claim 36
Dependent Claim
11 words
The method of claim 30 wherein the electrolyte/buffer comprises a silicate.
Claim 37
Dependent Claim
12 words
The method of claim 30 wherein the electrolyte/buffer comprises a carbonate material.
Claim 38
Independent Claim
124 words
A method for preparing a thickened, aqueous cleanser characterized by a consistency which remains generally continuously flowable or plastic, comprising the step of combining: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about 1 to 15 percent by weight of the cleanser; (b) an abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the abrasive forming about 5 to 70 percent by weight of the cleanser; (c) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; and (d) a fatty acid anionic surfactant forming about 0.1 to 5 percent by weight of the cleanser.
Claim 39
Independent Claim
124 words
A method for preparing a thickened, aqueous cleanser characterized by a consistency which remains generally continuously flowable or plastic, comprising the step of combining: (a) a colloidal alumina thickener having an average particle size, in dispersion, of no more than about one micron, the colloidal alumina thickener forming about 1 to 15 percent by weight of the cleanser; (b) an abrasive having an average particle size of about one to as much as 400 microns to provide scouring action, the abrasive forming about 5 to 70 percent by weight of the cleanser; (c) an electrolyte/buffer forming about 1 to 25 percent by weight of the cleanser; and (d) a fatty acid anionic surfactant forming about 0.1 to 5 percent by weight of the cleanser.
Claim 40
Dependent Claim
19 words
The method of claim 33 wherein the electrolyte/buffer is selected from the group consisting of silicate and carbonate materials.
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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) | 1990-09-21 | 1991-03-23 | 1991-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-09-21 | 1995-03-23 | 1995-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-09-21 | 1999-03-23 | 1999-09-22 | $7700.00 | Window Closed / Lapsed |