US3994744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
No-scrub cleaning method
Assignee: SC Johnson and Son Inc
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Filing: 1974-10-01
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Granted: 1976-11-30
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Expires: 1994-10-01
Abstract
Abstract Aqueous cleaning compositions having a minimum film-forming temperature of at least 30° C. and comprising a polymer having a glass transition temperature of at least 35° C. and a metal salt, form a tacky film after being applied to a soiled substrate. Soil adheres to the tacky film which, as a result of the drying of said composition, fractures to form a removable residue. Soil is removed from the substrate together with the residue. This method requires no scrubbing when cleaning soiled substrates with said aqueous cleaning compositions.
Inventors
- 👤 Robert C. Anderle
- 👤 Robert F. Schwarz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:26
CPC Classifications
B; B08; B08B; B08B7/00; B08B7/0014; C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3746; C11D3/3757; C11D3/3765; C11D2111/00; C11D2111/10; C11D2111/12
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
190 words
A process for cleaning a soiled substrate, said process consisting essentially of the sequential steps of (1) applying to said substrate an aqueous cleaning composition having a minimum film-forming temperature of at least 30° C. consisting essentially of from about 1 to about 50 percent, by weight, of a polymer having a glass transition temperature of at least 35° C. selected from the group consisting of co-polymers of at least one acid monomer and at least one soft monomer, co-polymers of at least one acid monomer and at least one hard monomer, and co-polymers of at least one acid monomer and a mixture of hard and soft monomers, from about 0.1 to about 5 percent by weight of a metal salt selected from salts of zinc, cadmium, copper, nickel, cobalt, zirconium, chromium, manganese, calcium and mixtures thereof and from 98.9 to 45 percent, by weight, water; (2) allowing said composition to form a tacky film to which soil adheres; (3) allowing said composition to dry whereby, as a result of said drying, said film fractures to form a removable residue; and (4) removing said residue and soil from said substrate.
Claim 2
Dependent Claim
190 words
A process for cleaning a soiled substrate, said process consisting essentially of the sequential steps of (1) applying to said substrate an aqueous cleaning composition having a minimum film-forming temperature of at least 30° C. consisting essentially of from about 1 to about 50 percent, by weight, of a polymer having a glass transition temperature of at least 35° C. selected from the group consisting of co-polymers of at least one acid monomer and at least one soft monomer, co-polymers of at least one acid monomer and at least one hard monomer, and co-polymers of at least one acid monomer and a mixture of hard and soft monomers, from about 0.1 to about 5 percent by weight of a metal salt selected from salts of zinc, cadmium, copper, nickel, cobalt, zirconium, chromium, manganese, calcium and mixtures thereof and from 98.9 to 45 percent, by weight, water; (2) allowing said composition to form a tacky film to which soil adheres; (3) allowing said composition to dry whereby, as a result of said drying, said film fractures to form a removable residue; and (4) removing said residue and soil from said substrate.
Claim 3
Dependent Claim
65 words
The process of claim 1 wherein said salt is a complex metal salt of the formula M(NH 3 ) n Y 2 wherein M is the metal ion Zn + + , Cd + + , Cu + + or Ni + + , n is the coordination number of M and Y is an anion selected from acetate, formate and carbonate, and mixtures thereof.
Claim 4
Dependent Claim
15 words
The process of claim 2 wherein M is Zn + + and Y is carbonate.
Claim 5
Dependent Claim
21 words
The process of claim 1 wherein said polymer comprises 60 percent, by weight, methylmethacrylate and 40 percent, by weight, methacrylic acid.
Claim 6
Dependent Claim
21 words
The process of claim 1 wherein said composition contains from about 0.1 to about 5 percent, by weight, of a builder.
Claim 7
Dependent Claim
11 words
The process of claim 5 wherein said builder is tetrapotassium pyrophosphate.
Claim 8
Dependent Claim
36 words
The process of claim 1 wherein said composition is packed within a pressurized aerosol container and contains a propellant selected from the group consisting of liquified normally gaseous hydrocarbons, liquified halogenated hydrocarbons, and inert compressible gases.
Claim 9
Dependent Claim
27 words
The process of claim 7 wherein said propellant is selected from propane, butane, isobutane, n-pentane, isopentane, dichlorodifluoroethane, dichlorotetrachloroethane, trichlorotrifluoroethane, difluoroethane, nitrous oxide, nitrogen, carbon and mixtures thereof.
Claim 10
Dependent Claim
22 words
The process of claim 1 wherein said cleaning composition contains from about 3 to about 35 percent, by weight of said polymer.
Claim 11
Dependent Claim
25 words
The process of claim 1 wherein said salt is selected from chlorides of zinc, cadmium, copper, nickel, cobalt, zirconium, chromium, manganese, calcium and mixtures thereof.
References Cited (Backward Citations)
US3574124A
Cited
US3630923A
Cited
US3835071A
Cited
US3716488A
Cited
US3723358A
Cited
US3901727A
Cited
US3723323A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-30 | 1980-05-31 | 1980-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-30 | 1984-05-31 | 1984-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-30 | 1988-05-31 | 1988-11-30 | $7700.00 | Window Closed / Lapsed |