US4235732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid bleaching compositions
Assignee: Procter and Gamble Co
•
Filing: 1978-02-08
•
Granted: 1980-11-25
•
Expires: 1998-02-08
Abstract
Abstract Alkaline aqueous hypochlorite cleaning compositions containing paraffin sulfonates as bleach stable surfactants.
Inventors
- 👤 Harold H. Beyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:33
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/395; C11D3/3956; C11D1/00; C11D1/02; C11D1/12; C11D1/14; C11D1/143; C11D17/00; C11D17/0008; C11D17/0013; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/1253; C11D3/1266; C11D3/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
173 words
An aqueous false-body hard-surface scouring cleanser consisting essentially of; A. from about 0.2% to 5% by weight of a bleaching agent which yields hypochlorite ion in aqueous solution. B. from about 1% to 30% by weight of an inorganic colloid-forming clay selected from the group consisting of smectites, attapulgites and mixtures of smectite and attapulgites; C. from about 0.1% to 5% by weight of a paraffin sulfonate surfactant of the formula RSO 3 M wherein R is a primary or secondary alkyl group containing from about 8 to about 22 carbon atoms and M is an alkali metal; D. from about 5% to 60% by weight of insoluble particulate abrasive material which has particle diameters ranging from one micron to about 250 microns and a specific gravity of from about 0.2 to about 5.0; E. from about 2% to 15% by weight of an inorganic alkaline buffer salt capable of maintaining composition pH within the range of from about 10.0 to 14; and F. from about 10% to 90% by weight of water.
Claim 2
Dependent Claim
173 words
An aqueous false-body hard-surface scouring cleanser consisting essentially of; A. from about 0.2% to 5% by weight of a bleaching agent which yields hypochlorite ion in aqueous solution. B. from about 1% to 30% by weight of an inorganic colloid-forming clay selected from the group consisting of smectites, attapulgites and mixtures of smectite and attapulgites; C. from about 0.1% to 5% by weight of a paraffin sulfonate surfactant of the formula RSO 3 M wherein R is a primary or secondary alkyl group containing from about 8 to about 22 carbon atoms and M is an alkali metal; D. from about 5% to 60% by weight of insoluble particulate abrasive material which has particle diameters ranging from one micron to about 250 microns and a specific gravity of from about 0.2 to about 5.0; E. from about 2% to 15% by weight of an inorganic alkaline buffer salt capable of maintaining composition pH within the range of from about 10.0 to 14; and F. from about 10% to 90% by weight of water.
Claim 3
Dependent Claim
60 words
The composition of claim 1, wherein the bleaching agent which produces hypochlorite ion is sodium hypochlorite and is present at a level of from about 0.2% to about 5%, wherein the amount of water in the composition is from about 50% to about 85%, and wherein the amount of abrasive in the composition is from about 8% to about 32%.
Claim 4
Dependent Claim
30 words
The composition of claim 2, wherein the inorganic colloid-forming clay is a smectite clay and is present at a level of from about 2% to about 5% of the composition.
Claim 5
Dependent Claim
19 words
The composition of claim 3 wherein the paraffin sulfonate surfactant is a C 10 to C 18 paraffin sulfonate.
Claim 6
Dependent Claim
30 words
The composition of claim 4, wherein the inorganic alkaline buffer salt is selected from the group consisting of alkali metal carbonates, bicarbonates, sesquicarbonates, silicates, pyrophosphates, phosphates, tetraborates and mixtures thereof.
Claim 7
Dependent Claim
35 words
The composition of claim 5, wherein the insoluble particulate abrasive is selected from the group consisting of quartz, pumice, pumicite, titanium dioxide, silica sand, calcium carbonate, zirconium silicate, diatomaceous earth, whiting, feldspar, and expanded perlite.
Claim 8
Dependent Claim
21 words
The composition of claim 6, wherein the insoluble particulate abrasive has a specific gravity of from about 0.4 to about 2.4.
Claim 9
Dependent Claim
12 words
The composition of claim 7 wherein the particulate abrasive is expanded perlite.
Claim 10
Dependent Claim
49 words
The composition of claim 4, containing as an additional surfactant a C 8 to C 22 alkyl sulfate, wherein the ratio of paraffin sulfonate to alkyl sulfate is from 10:1 to about 1:10, and wherein the total surfactant level in the composition is from about 0.1% to about 5%.
Claim 11
Dependent Claim
35 words
The composition of claim 9, wherein the alkyl sulfate is a C 10 to C 18 alkyl sulfate and wherein the ratio of paraffin sulfonate to alkyl sulfate is from about 1:2 to about 2:1.
References Cited (Backward Citations)
US3172861A
Cited
US3560389A
Cited
FR2094708A5
Cited
US3758409A
Cited
US4005027A
Cited
US3929661A
Cited
US4017409A
Cited
US4051055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-25 | 1984-05-26 | 1984-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-25 | 1988-05-26 | 1988-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-25 | 1992-05-26 | 1992-11-25 | $7700.00 | Window Closed / Lapsed |