Patent US3994744A successfully refreshed from Google Patents.
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
2026-11-02 23:25
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.
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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) | 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 |