US2559260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of imparting water repellency to fibrous materials and resulting product
Assignee: ExxonMobil Oil Corp
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Filing: 1947-07-25
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Granted: 1951-07-03
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Expires: 1967-07-25
Abstract
No abstract record available.
Inventors
- 👤 John W Schick
- 👤 Howard D Hartough
- 👤 Darwin E Badertscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:21
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2164; Y10T442/2197
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A METHOD OF IMPARTING WATER-REPELLENCY TO FIBROUS MATERIAL WHICH COMPRISES CONTACTING ORGANIC FIBROUS MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING A WATER-SOLUBLE HYDROHALIDE OF A NITROGENEOUS CONDENSATION PRODUCT HAVING AT LEAST ONE NUCLEUS OF A 5-MEMBERED HETEROCYCLIC COMPOUND, SAID NITROGENEOUS CONDENSATION PRODUCT HAVING BEEN OBTAINED BY CONDENSING A 5MEMBERED HETEROCYCLIC COMPOUND WITH FORMALDEHYDE AND A MEMBER OF THE GROUP CONSISTING OF AMMONIUM HALIDE AND HYDROXYLAMINE HALIDE IN THE PRESENCE OF AN ACID HAVING AN IONIZATION CONSTANT GREATER THAN 1X10-5 BUT NOT GREATER THAN ABOUT 1.7X10-2, SAID 5-MEMBERED HETEROCYCLIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF THIOPHENE, FURAN AND PYRROLE REMOVING SAID ORGANIC FIBROUS MATERIAL CARRYING SAID WATERSOLUBLE DERIVATIVE OF SAID NITROGENEOUS CONDENSATION PRODUCT FROM SAID SOLUTION, CONTACTING SAID ORGANIC FIBROUS MATERIAL WITH AN ALKALINE MEDIUM IN WHICH SAID ORGANIC FIBROUS MATERIAL IS SUBSTANTIALLY INSOLUBLE, CONTACTING SAID ORGANIC FIBROUS MATERIAL CARRYING SAID CONDENSATION PRODUCT WITH FORMALDEHYDE, SUBJECTING THE SO-TREATED ORGANIC FIBROUS MATERIAL TO ELEVATED TEMPERATURE OF ABOUT 212* TO ABOUT 260* F., AND REMOVING SUFFICIENT NONNITROGENEOUS FOREIGN MATERIAL THAT THE WATER-REPELLENCY OF THE SO-TREATED ORGANIC FIBROUS MATERIAL IS NOT SERIOUSLY IMPAIRED.
Claim 2
Independent Claim
180 words
A METHOD OF IMPARTING WATER-REPELLENCY TO FIBROUS MATERIAL WHICH COMPRISES CONTACTING ORGANIC FIBROUS MATERIAL WITH AN AQUEOUS SOLUTION CONTAINING A WATER-SOLUBLE HYDROHALIDE OF A NITROGENEOUS CONDENSATION PRODUCT HAVING AT LEAST ONE NUCLEUS OF A 5-MEMBERED HETEROCYCLIC COMPOUND, SAID NITROGENEOUS CONDENSATION PRODUCT HAVING BEEN OBTAINED BY CONDENSING A 5MEMBERED HETEROCYCLIC COMPOUND WITH FORMALDEHYDE AND A MEMBER OF THE GROUP CONSISTING OF AMMONIUM HALIDE AND HYDROXYLAMINE HALIDE IN THE PRESENCE OF AN ACID HAVING AN IONIZATION CONSTANT GREATER THAN 1X10-5 BUT NOT GREATER THAN ABOUT 1.7X10-2, SAID 5-MEMBERED HETEROCYCLIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF THIOPHENE, FURAN AND PYRROLE REMOVING SAID ORGANIC FIBROUS MATERIAL CARRYING SAID WATERSOLUBLE DERIVATIVE OF SAID NITROGENEOUS CONDENSATION PRODUCT FROM SAID SOLUTION, CONTACTING SAID ORGANIC FIBROUS MATERIAL WITH AN ALKALINE MEDIUM IN WHICH SAID ORGANIC FIBROUS MATERIAL IS SUBSTANTIALLY INSOLUBLE, CONTACTING SAID ORGANIC FIBROUS MATERIAL CARRYING SAID CONDENSATION PRODUCT WITH FORMALDEHYDE, SUBJECTING THE SO-TREATED ORGANIC FIBROUS MATERIAL TO ELEVATED TEMPERATURE OF ABOUT 212* TO ABOUT 260* F., AND REMOVING SUFFICIENT NONNITROGENEOUS FOREIGN MATERIAL THAT THE WATER-REPELLENCY OF THE SO-TREATED ORGANIC FIBROUS MATERIAL IS NOT SERIOUSLY IMPAIRED.
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) | 1954-07-02 | 1955-01-01 | 1955-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-02 | 1959-01-01 | 1959-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-02 | 1963-01-01 | 1963-07-03 | $7700.00 | Window Closed / Lapsed |