US4013594A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powdered cleaning composition of urea-formaldehyde
Assignee: EIDP Inc
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Filing: 1974-01-16
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Granted: 1977-03-22
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Expires: 1994-01-16
Abstract
Abstract A powdered cleaning composition particularly effective in removing soil from carpets comprising solid polymeric urea-formaldehyde particles of 10 to 105 microns in size and a solvent chosen from water, high boiling hydrocarbon or chlorinated hydrocarbon solvents, C 1 to C 4 aliphatic alcohols and mixtures of these.
Inventors
- 👤 Helmut Hermann Froehlich
- 👤 William Jacob Lautenberger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:07
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/37; C11D3/3703; C11D3/0005; C11D3/0031; C11D3/43
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
118 words
A powdered cleaning composition having a soil substantivity constant greater than 1.5 and consisting essentially of about 30 to 90% particulate polymeric ureaformaldehyde and about 10 to 70% fluid, the urea-formaldehyde having a particle size of about from 10 to 105 microns, an oil absorption value of no less than 90, fiber hardness and a bulk density of at least 0.2 g./cc., and the fluid consisting essentially of up to 100% water containing sufficient surfactant to give a surface tension of less than 40 dynes per centimeter and up to 100% of organic liquid selected from high boiling hydrocarbon solvents, tetrachloroethylene, methyl chloroform, 1,1,2-trichloro-1,2,2-trifluoroethane, an aliphatic alcohol containing from 1 to 4 carbon atoms, and mixtures of these.
Claim 2
Dependent Claim
118 words
A powdered cleaning composition having a soil substantivity constant greater than 1.5 and consisting essentially of about 30 to 90% particulate polymeric ureaformaldehyde and about 10 to 70% fluid, the urea-formaldehyde having a particle size of about from 10 to 105 microns, an oil absorption value of no less than 90, fiber hardness and a bulk density of at least 0.2 g./cc., and the fluid consisting essentially of up to 100% water containing sufficient surfactant to give a surface tension of less than 40 dynes per centimeter and up to 100% of organic liquid selected from high boiling hydrocarbon solvents, tetrachloroethylene, methyl chloroform, 1,1,2-trichloro-1,2,2-trifluoroethane, an aliphatic alcohol containing from 1 to 4 carbon atoms, and mixtures of these.
Claim 3
Dependent Claim
29 words
A cleaning composition of claim 1 wherein the amount of particulate material is between about 50 and 75% and the amount of fluid is between about 25 and 50%.
Claim 4
Dependent Claim
20 words
A cleaning composition of claim 2 wherein the fluid contains about 7 parts water and about 3 parts organic liquid.
Claim 5
Dependent Claim
19 words
A cleaning composition of claim 1 further comprising about from 2 to 10% by weight of cationic antistatic agent.
Claim 6
Dependent Claim
22 words
A cleaning composition of claim 1 comprising about from 1 to 10% nonionic surfactant and about from 1 to 4% cationic surfactant.
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) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |