US3956162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thixotropic cleaning composition containing particulate resins and fumed silica
Assignee: EIDP Inc
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Filing: 1973-06-15
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Granted: 1976-05-11
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Expires: 1993-06-15
Abstract
Abstract A cleaning composition in the form of a thixotropic paste which consists essentially of finely divided insoluble particulate matter, water, a petroleum distillate boiling from 150° to 250°C., a hydrocarbon or halogenated hydrocarbon liquid boiling from about 35° to 75°C., and an emulsifying surfactant.
Inventors
- 👤 William Jacob Lautenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:12
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/43; C11D17/00; C11D17/0008; C11D17/003; C11D3/02; C11D3/12; C11D3/124; C11D3/16; C11D3/37
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
196 words
A thixotropic cleaning paste consisting essentially of 1. 10 to 40 parts of insoluble, synthetic, organic, polymeric, particulate matter selected from the group consisting of polystyrene, urea-formaldehyde resins, polyvinyl chloride, polyacrylics, polyethylene, polypropylene, and polyacrylonitrile-butadiene-styrene terpolymer having a particle size of from 10 to 105 microns and an oil value of at least 90; 2. 60 to 90 parts of a liquid component comprising a. 5 to 20 parts of water, b. 1 to 10 parts of a petroleum distillate high-boiler having a boiling point between about 150° and 250°C., and c. 40 to 70 parts of a hydrocarbon or halogenated hydrocarbon low-boiling solvent having a boiling point of from about 35° to 75°C.; 3. 0.1 to 2.0 parts of a powdered solid fumed silica thixotropic agent having a particle size of from about 0.007 to 0.05 micron; 4. 0.01 to 5.0 parts of an emulsifying surfactant selected from anionic and non-ionic surfactants having a Hydrophile-Lipophile balance greater than 8.0; and 5. Up to 7.0 parts of a freeze-depressant solvent selected from the group consisting of methanol, ethylene glycol and their mixtures; and an inhibitor solvent selected from secondary butyl alcohol, tetrahydrofuran, dioxane and their mixtures.
Claim 2
Dependent Claim
196 words
A thixotropic cleaning paste consisting essentially of 1. 10 to 40 parts of insoluble, synthetic, organic, polymeric, particulate matter selected from the group consisting of polystyrene, urea-formaldehyde resins, polyvinyl chloride, polyacrylics, polyethylene, polypropylene, and polyacrylonitrile-butadiene-styrene terpolymer having a particle size of from 10 to 105 microns and an oil value of at least 90; 2. 60 to 90 parts of a liquid component comprising a. 5 to 20 parts of water, b. 1 to 10 parts of a petroleum distillate high-boiler having a boiling point between about 150° and 250°C., and c. 40 to 70 parts of a hydrocarbon or halogenated hydrocarbon low-boiling solvent having a boiling point of from about 35° to 75°C.; 3. 0.1 to 2.0 parts of a powdered solid fumed silica thixotropic agent having a particle size of from about 0.007 to 0.05 micron; 4. 0.01 to 5.0 parts of an emulsifying surfactant selected from anionic and non-ionic surfactants having a Hydrophile-Lipophile balance greater than 8.0; and 5. Up to 7.0 parts of a freeze-depressant solvent selected from the group consisting of methanol, ethylene glycol and their mixtures; and an inhibitor solvent selected from secondary butyl alcohol, tetrahydrofuran, dioxane and their mixtures.
Claim 3
Dependent Claim
28 words
A cleaning paste of claim 1 wherein the particulate matter has an oil value of more than 140 and a particle size of from 37 to 105 microns.
Claim 4
Dependent Claim
19 words
A cleaning paste of claim 1 wherein the petroleum distillate has a boiling point between about 170° and 215°C.
Claim 5
Dependent Claim
23 words
A cleaning paste of claim 1 wherein the low-boiling solvent is methyl chloroform or a perhalogenated ethane containing both chlorine and fluorine substituents.
Claim 6
Dependent Claim
36 words
A cleaning paste of claim 2 wherein the petroleum distillate has a boiling point between about 170° and 215°C. and the low-boiling solvent is methyl chloroform or a perhalogenated ethane containing both chlorine and fluorine substituents.
Claim 7
Dependent Claim
62 words
A cleaning paste of claim 5 consisting essentially of 1. 15 to 20 parts of the polymer particulate; 2. 70 to 80 parts of a liquid consisting essentially of a. 9 to 14 parts of water b. 4 to 6 parts of petroleum distillate c. 55 to 65 parts of low-boiling solvent; 3. 0.5 to 1.5 parts of fumed silica thixotropic agent;
Claim 8
Dependent Claim
63 words
0.1 to 1.0 part of emulsifying surfactant; 5. 1 to 3 parts of solvent to prevent freezing selected from the group consisting of methanol, ethylene glycol and their mixtures; and 6. 0.5 to 4 parts of solvent to inhibit possible metal-catalyzed decomposition of halogenated solvent, the inhibitor solvent being selected from the group consisting of secondary butyl alcohol, tetrahydrofuran, dioxane and their mixtures.
Claim 9
Dependent Claim
63 words
0.1 to 1.0 part of emulsifying surfactant; 5. 1 to 3 parts of solvent to prevent freezing selected from the group consisting of methanol, ethylene glycol and their mixtures; and 6. 0.5 to 4 parts of solvent to inhibit possible metal-catalyzed decomposition of halogenated solvent, the inhibitor solvent being selected from the group consisting of secondary butyl alcohol, tetrahydrofuran, dioxane and their mixtures.
Claim 10
Dependent Claim
32 words
A cleaning paste of claim 6 wherein the particulate polymer is urea-formaldehyde or polyvinyl chloride; and the emulsifying surfactant is the salt of a C 12 to C 18 aliphatic alcohol sulfate.
References Cited (Backward Citations)
US2901383A
Cited
GB1114697A
Cited
US3351560A
Cited
FR2015972A1
Cited
US3630919A
Cited
US3748268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |