US3655422A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fire retarding treatment
Assignee: Kimberly Clark Corp
•
Filing: 1970-09-18
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Granted: 1972-04-11
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Expires: 1990-09-18
Abstract
Abstract A process is illustrated for rendering a water repellent fabric fire retardant without adversely affecting the fabric''s water repellent characteristics. The water repellent fabric is treated with an aqueous medium containing a fire retarding agent and a thermally degradable surfactant such as the diacetyl dilauryl amide derivative of triethylenetetramine and then dried. On drying, the surfactant degrades and the water repellent characteristics of the fabric are restored.
Inventors
- 👤 Leroy J Goldbeck
- 👤 Norbert L Van Den Elzen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:27
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/80; D06M11/82; D06M11/07; D06M11/11; D06M11/13; D06M11/20; D06M11/22; D06M11/32; D06M11/36; D06M11/47; D06M11/58; D06M11/66; D06M11/68; D06M11/70; D06M11/71; D06M13/00; D06M13/322; D06M13/402; D06M13/405
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
16 words
The process of claim 1 wherein the surfactant is a diacetyl dihigheralkyl amide derivative of triethylenetetramine.
Claim 2
Dependent Claim
16 words
The process of claim 1 wherein the surfactant is a diacetyl dilauryl amide derivative of triethylenetetramine.
Claim 3
Dependent Claim
18 words
The process of claim 3 wherein fabric heating is accomplished at about 250*-400* F. for about 0.3-3 minutes.
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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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |