Patent US4116848A successfully refreshed from Google Patents.
US4116848A
Expired / Lapsed
US
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Novel cleaning method and compositions
Assignee: Reckitt and Colman Subsidiary Corp
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Filing: 1973-11-07
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Granted: 1978-09-26
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Expires: 1993-11-07
Abstract
Abstract A cleaning composition for the removal of soils containing free or combined organic acids comprising (A) at least 1% by weight of a substance selected from the group consisting of (1) at least one alkali metal salt of a weak organic acid, said salt melting at elevated temperatures, preferably below about 550° F and said weak organic acid constituent part being volatile and/or decomposing at said elevated temperatures on contact with said soil or (2) mixtures of salts thereof, the mixtures having melting points lower than the cleaning temperature, preferably less than 550° F; and (B) up to 99% by weight of a carrier. The novel method of cleaning soils containing free or combined organic acids comprises applying the said salt or salts of weak organic acid to said soil, heating the salt(s) and soil above the melting point of the said salt(s) and then removing the residue.
Inventors
- 👤 Daniel Schoenholz
- 👤 Arthur Walter Petersen
- 👤 Marcus Allen Northup, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:03
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D17/00; C11D17/0008; C11D17/0013; C11D17/0043; C11D3/0005; C11D3/0057; C11D7/00; C11D7/22; C11D7/26; C11D7/261; C11D7/265; C11D2111/00; C11D2111/10; C11D2111/14; C11D2111/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
91 words
A weakly alkaline composition for removing soil containing free or combined organic acids from a surface comprising (A) 1 to 99% by weight of an active ingredient consisting of at least two alkali metal salts of weak organic acids which will melt at temperatures between 250° and 550° F at which the weak organic acids will volatilize and/or decompose and (B) 1 to 5% by weight of a thickening agent, (C) 1 to 60% by weight of a finely divided inorganic material and (D) and the balance being an aqueous carrier.
Claim 2
Dependent Claim
91 words
A weakly alkaline composition for removing soil containing free or combined organic acids from a surface comprising (A) 1 to 99% by weight of an active ingredient consisting of at least two alkali metal salts of weak organic acids which will melt at temperatures between 250° and 550° F at which the weak organic acids will volatilize and/or decompose and (B) 1 to 5% by weight of a thickening agent, (C) 1 to 60% by weight of a finely divided inorganic material and (D) and the balance being an aqueous carrier.
Claim 3
Dependent Claim
32 words
The composition of claim 1 wherein the active ingredient is a mixture of at least 2 alkali metal acetates selected from the group consisting of sodium acetate, lithium acetate and potassium acetate.
Claim 4
Dependent Claim
13 words
The oven cleaning composition of claim 1 which further contains an inorganic colloid.
Claim 5
Dependent Claim
13 words
The oven cleaning composition of claim 1 which further contains a surface-active agent.
Claim 6
Dependent Claim
26 words
The oven cleaning composition of claim 1 which further contains a mixture of an inorganic colloid and a surface-active agent and the thickening agent is organic.
Claim 7
Dependent Claim
36 words
An aerosol composition for oven cleaning comprising 1 to 45% by weight of an eutectic mixture of sodium acetate, lithium acetate and potassium acetate, an aqueous carrier, a thickening agent and an aerosol propellant under pressure.
Claim 8
Dependent Claim
36 words
An aerosol composition for oven cleaning comprising 1 to 45% by weight of an eutectic mixture of sodium acetate, lithium acetate and potassium acetate, an aqueous carrier, a thickening agent and an aerosol propellant under pressure.
Claim 9
Dependent Claim
12 words
The composition of claim 1 wherein the finely divided material is alkaline.
Claim 10
Dependent Claim
28 words
The composition of claim 1 wherein the carrier is selected from the group consisting of water and a mixture of water and at least one water-miscible organic solvent.
Claim 11
Dependent Claim
37 words
The composition of claim 1 wherein the composition also contains 10 to 100% by weight of at least one polyhydric alcohol having at least 2 free hydroxy groups based on the weight of the alkali metal salt.
Claim 12
Dependent Claim
33 words
The composition of claim 2 which also contains at least one member of the group of alkali metal glycolates and alkali metal glycinates to lower the melting point of the active cleaning ingredient.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |