Patent US4877691A successfully refreshed from Google Patents.
US4877691A
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Soil release agent and method to facilitate the cleaning of ovens used for cooking
Assignee: Kay Chemical Co
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Filing: 1985-11-27
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Granted: 1989-10-31
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Expires: 2005-11-27
Abstract
Abstract A composition for the pre-treatment in aqueous form of a surface, preferably of an oven, which is subjected to heat and is liable to soiling by baked-on organic food deposits. A food-safe, inorganic thickening agent, in an amount sufficient so that the composition is capable of forming a continuous coating adhered to all desired portions of the preferably cleaned surface, which coating also remains continuous as the coating dries, preferably by heating, is combined with an alkaline, water-soluble inorganic salt in an amount sufficient so that the composition is readily removable with water or an aqueous solution after the composition has been dried and soiled. The composition forms a continuous film after drying. After the film becomes soiled, it can be readily removed by contact with water or an aqueous solution.
Inventors
- 👤 John R. Cockrell, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 10:22
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/0005; C11D3/0057; C11D17/00; C11D17/0043; C11D3/02; C11D3/12; C11D3/124; C11D3/1246; C11D3/1253; C11D3/1266; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/16; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31707; Y10T428/3171
Claims Analysis
Total Claims: 63
Claim 1
Independent Claim
119 words
A composition for the pre-treatment in aqueous form of a surface which is subjected to heat and is liable to soiling by baked-on organic food deposits consisting essentially of: a. a food-safe, inorganic thickening agent which is substantially insoluble in the aqueous form of said composition and which is present in an amount sufficient so that the aqueous form of said composition is capable of forming a continuous coating adhered to all desired portions of said surface, which coating also remains continuous as the coating dries; and b. an alkaline, food-safe, water-soluble inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled.
Claim 2
Dependent Claim
119 words
A composition for the pre-treatment in aqueous form of a surface which is subjected to heat and is liable to soiling by baked-on organic food deposits consisting essentially of: a. a food-safe, inorganic thickening agent which is substantially insoluble in the aqueous form of said composition and which is present in an amount sufficient so that the aqueous form of said composition is capable of forming a continuous coating adhered to all desired portions of said surface, which coating also remains continuous as the coating dries; and b. an alkaline, food-safe, water-soluble inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled.
Claim 3
Dependent Claim
11 words
The composition of claim 1 wherein said composition also includes water.
Claim 4
Dependent Claim
12 words
The composition of claim 2 wherein the composition is a sprayable liquid.
Claim 5
Dependent Claim
108 words
A composition for the pre-treatment of a surface which is subjected to heat and is liable to soiling by baked-on organic food deposits consisting essentially of: a. a food-safe, inorganic thickening agent which is an inorganic clay material and is present in an amount sufficient so that said composition is capable of forming a continuous coating adhered to all desired portions of said surface, which coating also remains continuous as the coating dries; b. an alkaline, food-safe, water-soluble inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled; and c. water.
Claim 6
Dependent Claim
108 words
A composition for the pre-treatment of a surface which is subjected to heat and is liable to soiling by baked-on organic food deposits consisting essentially of: a. a food-safe, inorganic thickening agent which is an inorganic clay material and is present in an amount sufficient so that said composition is capable of forming a continuous coating adhered to all desired portions of said surface, which coating also remains continuous as the coating dries; b. an alkaline, food-safe, water-soluble inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled; and c. water.
Claim 7
Dependent Claim
14 words
The composition of claim 4 wherein the thickening agent is a smectite clay material.
Claim 8
Dependent Claim
18 words
The composition of claim 5 wherein the thickener is derived from bentonite rock and contains predominantly montmorillonite clay.
Claim 9
Dependent Claim
13 words
The composition of claim 2 wherein the thickener is a magnesium aluminum silicate.
Claim 10
Dependent Claim
31 words
The composition of claim 7 wherein the silicate comprises 69.0% silicon dioxide, 2.9% magnesium oxide, 14.7% aluminum oxide, 1.8% ferric oxide, 1.3% calcium oxide, 2.2% sodium oxide and 0.4% potassium oxide.
Claim 11
Dependent Claim
27 words
The composition of claim 1 wherein the thickening agent is present in an amount from about 0.5 parts to about 10 parts by weight of said composition.
Claim 12
Dependent Claim
27 words
The composition of claim 9 wherein the thickening agent is present in an amount from about 1.0 parts to about 3.0 parts by weight of said composition.
Claim 13
Dependent Claim
22 words
The composition of claim 2 wherein the thickening agent is present in an amount from about 0.5% to about 10.0% by weight.
Claim 14
Dependent Claim
22 words
The composition of claim 11 wherein the thickening agent is present in an amount from about 1.0% to about 3.0% by weight.
Claim 15
Dependent Claim
18 words
The composition of claim 2 wherein the water-soluble inorganic salt is selected from the group consisting of phosphates.
Claim 16
Dependent Claim
13 words
The composition of claim 13 wherein the water-soluble inorganic salt is tripotassium phosphate.
Claim 17
Dependent Claim
28 words
The composition of claim 1 wherein the water-soluble inorganic salt is present in an amount from about 0.05 parts to about 67 parts by weight of said composition.
Claim 18
Dependent Claim
26 words
The composition of claim 2 wherein the water-soluble inorganic salt is present in an amount from about 0.05% to about 67% by weight of said composition.
Claim 19
Dependent Claim
23 words
The composition of claim 2 wherein said composition, prior to application to said surface, has a pH from about 11.0 to about 14.0.
Claim 20
Dependent Claim
14 words
The composition of claim 2 further consisting essentially of a food safe, alkali-stable dye.
Claim 21
Dependent Claim
175 words
A composition for the pre-treatment of a surface which is subjected to heat and is liable to soiling by baked-on organic food deposits consisting essentially of: a. a food-safe, inorganic thickening agent which is a magnesium aluminum silicate, said thickening agent being present in an amount of about 2.2% by weight of said composition, so that said composition is capable of forming a continuous coating adhered to all desired portions of said surface, which coating also remains continuous as the coating dries; b. an alkaline, food-safe, water-soluble inorganic salt which is tripotassium phosphate, said inorganic salt being present in an amount of about 5 to 25% by weight of said composition, so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled; and c. water, wherein said composition, prior to application to said surface, has a pH of about 12.0 to 12.5, and wherein said composition further consists essentially of FD&C Blue #1 Dye in an amount of about 0.04% by weight of said composition.
Claim 22
Dependent Claim
175 words
A composition for the pre-treatment of a surface which is subjected to heat and is liable to soiling by baked-on organic food deposits consisting essentially of: a. a food-safe, inorganic thickening agent which is a magnesium aluminum silicate, said thickening agent being present in an amount of about 2.2% by weight of said composition, so that said composition is capable of forming a continuous coating adhered to all desired portions of said surface, which coating also remains continuous as the coating dries; b. an alkaline, food-safe, water-soluble inorganic salt which is tripotassium phosphate, said inorganic salt being present in an amount of about 5 to 25% by weight of said composition, so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled; and c. water, wherein said composition, prior to application to said surface, has a pH of about 12.0 to 12.5, and wherein said composition further consists essentially of FD&C Blue #1 Dye in an amount of about 0.04% by weight of said composition.
Claim 23
Dependent Claim
92 words
A continuous film adhered to a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits, said film having been dried, consisting essentially of: a. a food-safe, inorganic thickening agent which is substantially insoluble in an alkaline aqueous composition and which is present in an amount sufficient so that said film is still continuous after said drying; and b. an alkaline, water-soluble, food-safe inorganic salt present in an amount sufficient so that said film is readily removable with water or an aqueous solution after soiling.
Claim 24
Dependent Claim
92 words
A continuous film adhered to a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits, said film having been dried, consisting essentially of: a. a food-safe, inorganic thickening agent which is substantially insoluble in an alkaline aqueous composition and which is present in an amount sufficient so that said film is still continuous after said drying; and b. an alkaline, water-soluble, food-safe inorganic salt present in an amount sufficient so that said film is readily removable with water or an aqueous solution after soiling.
Claim 25
Dependent Claim
49 words
The film of claim 20 wherein said inorganic thickening agent is present in an amount from about 0.5 to about 10 parts by weight of said film and wherein said water-soluble salt is present in an amount from about 0.05 to about 67 parts by weight of said film.
Claim 26
Dependent Claim
16 words
The film of claim 20 wherein the film is about 0.06 to about 15.0 mils thick.
Claim 27
Dependent Claim
89 words
A continuous film adhered to a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits, said film having been dried, consisting essentially of: a. a food-safe, inorganic thickening agent which is an inorganic clay material and which is present in an amount sufficient so that said film is still continuous after said drying; and b. an alkaline, water-soluble, food-safe inorganic salt present in an amount sufficient so that said film is readily removable with water or an aqueous solution after soiling.
Claim 28
Dependent Claim
89 words
A continuous film adhered to a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits, said film having been dried, consisting essentially of: a. a food-safe, inorganic thickening agent which is an inorganic clay material and which is present in an amount sufficient so that said film is still continuous after said drying; and b. an alkaline, water-soluble, food-safe inorganic salt present in an amount sufficient so that said film is readily removable with water or an aqueous solution after soiling.
Claim 29
Dependent Claim
12 words
The film of claim 20 wherein the inorganic salt is tripotassium phosphate.
Claim 30
Independent Claim
159 words
A method for cleaning a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits comprising the steps of: a. applying to the surface a composition consisting essentially of: i. a food-safe, inorganic thickening agent which is substantially insoluble in said composition and which is present in an amount sufficient so that said composition is capable of forming a continuous coating adhered to all desired portions of the surface, which coating also remains continuous as the coating dries, ii. an alkaline, water-soluble, food-safe, inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled, and iii. water, to form a continuous coating on the surface; b. drying the continuous coating to form a film; c. allowing the film to become soiled; and d. removing the soiled film by contacting it with water or an aqueous solution.
Claim 31
Independent Claim
159 words
A method for cleaning a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits comprising the steps of: a. applying to the surface a composition consisting essentially of: i. a food-safe, inorganic thickening agent which is substantially insoluble in said composition and which is present in an amount sufficient so that said composition is capable of forming a continuous coating adhered to all desired portions of the surface, which coating also remains continuous as the coating dries, ii. an alkaline, water-soluble, food-safe, inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled, and iii. water, to form a continuous coating on the surface; b. drying the continuous coating to form a film; c. allowing the film to become soiled; and d. removing the soiled film by contacting it with water or an aqueous solution.
Claim 32
Dependent Claim
13 words
The method of claim 25 wherein the desired surface is an oven surface.
Claim 33
Dependent Claim
12 words
The method of claim 25 wherein the composition is a sprayable liquid.
Claim 34
Independent Claim
157 words
A method for cleaning a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits comprising the steps of: a. applying to the surface a composition consisting essentially of: i. a food-safe, inorganic thickening agent which is an inorganic clay material which is present in an amount sufficient so that said composition is capable of forming a continuous coating adhered to all desired portions of the surface, which coating also remains continuous as the coating dries, ii. an alkaline, water-soluble, food-safe, inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled, and iii. water, to form a continuous coating on the surface; b. drying the continuous coating to form a film; c. allowing the film to become soiled; and d. removing the soiled film by contacting it with water or an aqueous solution.
Claim 35
Independent Claim
157 words
A method for cleaning a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits comprising the steps of: a. applying to the surface a composition consisting essentially of: i. a food-safe, inorganic thickening agent which is an inorganic clay material which is present in an amount sufficient so that said composition is capable of forming a continuous coating adhered to all desired portions of the surface, which coating also remains continuous as the coating dries, ii. an alkaline, water-soluble, food-safe, inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled, and iii. water, to form a continuous coating on the surface; b. drying the continuous coating to form a film; c. allowing the film to become soiled; and d. removing the soiled film by contacting it with water or an aqueous solution.
Claim 36
Dependent Claim
39 words
The method of claim 28 wherein the thickening agent is a magnesium aluminum silicate consisting essentially of 69.0% silicon dioxide, 2.9% magnesium oxide, 14.7% aluminum oxide, 1.8% ferric oxide, 1.3% calcium oxide, 2.2% sodium oxide and 0.4% potassium oxide.
Claim 37
Dependent Claim
25 words
The method of claim 25 wherein the thickening agent is present in an amount from about 0.5% to about 10.0% by weight of said composition.
Claim 38
Dependent Claim
25 words
The method of claim 30 wherein the thickening agent is present in an amount from about 1.0% to about 3.0% by weight of said composition.
Claim 39
Dependent Claim
13 words
The method of claim 25 wherein the water-soluble, inorganic salt is tripotassium phosphate.
Claim 40
Dependent Claim
23 words
The method of claim 25 wherein the water-soluble, inorganic salt is present in an amount from about 0.05% to about 67% by weight.
Claim 41
Dependent Claim
23 words
The method of claim 25 wherein the composition, prior to being applied to said surface, has a pH from about 11.0to about 14.0.
Claim 42
Dependent Claim
16 words
The method of claim 25 wherein the composition is applied by spraying, wiping, brushing or dipping.
Claim 43
Dependent Claim
12 words
The method of claim 35 wherein the composition is applied by spraying.
Claim 44
Dependent Claim
13 words
The method of claim 25 wherein the continuous coating is dried by heating.
Claim 45
Dependent Claim
28 words
The method of claim 37 wherein the continuous coating is dried by heating a convective air flow to a temperature from about 200° F. to about 550° F.
Claim 46
Dependent Claim
20 words
The method of claim 25 wherein the soiled film is removed by wiping with a wet cloth or paper product.
Claim 47
Dependent Claim
20 words
The method of claim 25 further comprising the step of reapplying the composition to the surface after said removal step.
Claim 48
Independent Claim
178 words
A method for cleaning a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits comprising the steps of: a. applying to the surface a composition consisting essentially of: i. a food-safe, inorganic thickening agent which is a smectite clay material derived from bentonite rock and contains predominantly montmorillonite clay and which is present in an amount sufficient so that said composition is capable of forming a continuous coating adhered to all desired portions of the surface, which coating also remains continuous as the coating dries, ii. an alkaline, water-soluble, food-safe, inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled, and iii. water, to form a continuous coating on the surface; b. drying the continuous coating to form a film; c. allowing the film to become soiled; d. removing the soiled film by contacting it with water or an aqueous solution; and e. reapplying the composition to the surface after said removal step.
Claim 49
Independent Claim
178 words
A method for cleaning a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits comprising the steps of: a. applying to the surface a composition consisting essentially of: i. a food-safe, inorganic thickening agent which is a smectite clay material derived from bentonite rock and contains predominantly montmorillonite clay and which is present in an amount sufficient so that said composition is capable of forming a continuous coating adhered to all desired portions of the surface, which coating also remains continuous as the coating dries, ii. an alkaline, water-soluble, food-safe, inorganic salt in an amount sufficient so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled, and iii. water, to form a continuous coating on the surface; b. drying the continuous coating to form a film; c. allowing the film to become soiled; d. removing the soiled film by contacting it with water or an aqueous solution; and e. reapplying the composition to the surface after said removal step.
Claim 50
Dependent Claim
39 words
The method of claim 41 wherein the thickening agent is a magnesium aluminum silicate consisting essentially of 69.0% silicon dioxide, 2.9% magnesium oxide, 14.7% aluminum oxide, 1.8% ferric oxide, 1.3% calcium oxide, 2.2% sodium oxide and 0.4% potassium oxide.
Claim 51
Dependent Claim
13 words
The method of claim 40 wherein the water-soluble inorganic salt is tripotassium phosphate.
Claim 52
Dependent Claim
24 words
The method of claim 40 wherein the composition, prior to being applied to said surface, has a pH from about 11.0 to about 14.0.
Claim 53
Dependent Claim
14 words
The method of claim 40 wherein the composition is applied or reapplied by spraying.
Claim 54
Dependent Claim
33 words
The method of claim 40 wherein the continuous coating is dried by heating a convective air flow in contact with the surface to a temperature from about 200° F. to about 550° F.
Claim 55
Independent Claim
249 words
A method for cleaning a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits comprising the steps of: a. applying to the surface a composition consisting essentially of: i. a food-safe, inorganic thickening agent which is magnesium aluminum silicate, said thickening agent being present in an amount of about 2.2% by weight of said composition, so that said composition is capable of forming a continuous coating adhered to all desired portions of the surface, which coating also remains continuous as the coating dries, ii. an alkaline, water-soluble, food-safe, inorganic salt which is tripotassium phosphate, said water-soluble salt being present in an amount of about 5% to 25% by weight of said composition, so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled, and iii. water, to form a continuous coating on the surface, wherein the composition, prior to being applied to said surface, has a pH of about 12.0 to 12.5, and wherein the composition is applied to said surface by spraying, b. drying the continuous coating by heating at about 400° F. to form a film, c. allowing the film to become soiled; and d. removing the soiled film by wiping with a wet cloth or sponge, wherein said composition also consists essentially of FD&C Blue #1 Dye in an amount of about 0.04% by weight of said composition, and wherein said desired surface is that of an oven.
Claim 56
Independent Claim
249 words
A method for cleaning a desired surface which is subjected to heat and is liable to soiling by baked-on organic food deposits comprising the steps of: a. applying to the surface a composition consisting essentially of: i. a food-safe, inorganic thickening agent which is magnesium aluminum silicate, said thickening agent being present in an amount of about 2.2% by weight of said composition, so that said composition is capable of forming a continuous coating adhered to all desired portions of the surface, which coating also remains continuous as the coating dries, ii. an alkaline, water-soluble, food-safe, inorganic salt which is tripotassium phosphate, said water-soluble salt being present in an amount of about 5% to 25% by weight of said composition, so that said composition is readily removable with water or an aqueous solution after said composition has been dried and soiled, and iii. water, to form a continuous coating on the surface, wherein the composition, prior to being applied to said surface, has a pH of about 12.0 to 12.5, and wherein the composition is applied to said surface by spraying, b. drying the continuous coating by heating at about 400° F. to form a film, c. allowing the film to become soiled; and d. removing the soiled film by wiping with a wet cloth or sponge, wherein said composition also consists essentially of FD&C Blue #1 Dye in an amount of about 0.04% by weight of said composition, and wherein said desired surface is that of an oven.
Claim 57
Dependent Claim
14 words
The method of claim 40 wherein said desired surface is that of an oven.
Claim 58
Dependent Claim
24 words
The composition of claim 13 wherein the water-soluble inorganic salt is selected from the group consisting of tripotassium phosphate, sodium tripolyphosphate and potassium tripolyphosphate.
Claim 59
Dependent Claim
24 words
The film of claim 20 wherein the water-soluble inorganic salt is selected from the group consisting of tripotassium phosphate, sodium tripolyphosphate and potassium tripolyphosphate.
Claim 60
Dependent Claim
24 words
The method of claim 25 wherein the water-soluble inorganic salt is selected from the group consisting of tripotassium phosphate, sodium tripolyphosphate and potassium tripolyphosphate.
Claim 61
Dependent Claim
24 words
The method of claim 40 wherein the water-soluble inorganic salt is selected from the group consisting of tripotassium phosphate, sodium tripolyphosphate and potassium tripolyphosphate.
Claim 62
Dependent Claim
14 words
The film of claim 23 wherein the thickening agent is a smectite clay material.
Claim 63
Dependent Claim
23 words
The method of claim 28 wherein the thickening agent is a smectite clay material derived from bentonite rock and containing predominantly montmorillonite clay.
References Cited (Backward Citations)
US1943519A
Cited
US2367918A
Cited
US3544366A
Cited
GB1275740A
Cited
US3736259A
Cited
US3658711A
Cited
US3672993A
Cited
US3827983A
Cited
US3846172A
Cited
US3910854A
Cited
US3941713A
Cited
US4019998A
Cited
US4184975A
Cited
US4105574A
Cited
US4131558A
Cited
US4040972A
Cited
US4019999A
Cited
US4157921A
Cited
US4214915A
Cited
US4528039A
Cited
US4512908A
Cited
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