US2708642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for imparting water-repellancy to textiles
Assignee: Bayer AG
•
Filing: 1952-06-25
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Granted: 1955-05-17
•
Expires: 1972-06-25
Abstract
No abstract record available.
Inventors
- 👤 Doser Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:23
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/322; D06M13/395; D06M13/02; D06M15/00; D06M15/01; D06M15/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
A PROCESS FOR IMPARTING WATER REPELLENCY TO TEXTILE MATERIALS WHICH COMPRISES CONTACTING SAID TEXTILE MATERIALS WITH WATER-SOLUBLE SALTS OF METALS WHICH ARE AT LEAST TRIVALENT, SUBSEQUENT TO TREATMENT WITH A MIXTURE OF (I) AT LEAST ONE WAX AND (II) COMPOUNDS OF THE GROUP CONSISTING OF (1) ADDITION PRODUCTS OF SODIUM BISULFITE TO AN ALIPHATIC ISOCYANATE CONTAINING A HYDROCARBON RADICAL OF AT LEAST 10 CARBON ATOMS, (2) REACTION PRODUCTS OF FORMALDEHYDE WITH THE ADDITION PRODUCT OF SODIUM BISULFITE TO AN ALIPHATIC ISOCYANATE CONTAINING A HYDROCARBON RADICAL OF AT LEAST 10 CARBON ATOMS, (3) ADDITION PRODUCTS OF SODIUM BISULFITE TO AN ALIPHATIC ISOCYANATE CONTAINING A HYDROCARBON RADICAL OF AT LEAST 10 CARBON ATOMS, IN MIXTURE WITH AN ALIPHATIC AMINE OF MOLECULAR WEIGHT IN THE FORM OF ITS FORMALDEHYDE-BISULFITE-COMPOUND, AND (4) DIISOCYANATES CONTAINING A HYDROCARBON RADICAL OF LESS THAN 10 CARBON ATOMS, IN MIXTURE WITH AN ALIPHATIC AMINE CONTAINING A HYDROCARBON RADICAL OF AT LEAST 10 CARBON ATOMS WHICH AMINE IS PRESENT IN THE FORM OF ITS FORMALDEHYDE-BISULFITE-ADDITION PRODUCT; HEATING AND DRYING THE MATERIALS CONTACTED.
Claim 2
Dependent Claim
172 words
A PROCESS FOR IMPARTING WATER REPELLENCY TO TEXTILE MATERIALS WHICH COMPRISES CONTACTING SAID TEXTILE MATERIALS WITH WATER-SOLUBLE SALTS OF METALS WHICH ARE AT LEAST TRIVALENT, SUBSEQUENT TO TREATMENT WITH A MIXTURE OF (I) AT LEAST ONE WAX AND (II) COMPOUNDS OF THE GROUP CONSISTING OF (1) ADDITION PRODUCTS OF SODIUM BISULFITE TO AN ALIPHATIC ISOCYANATE CONTAINING A HYDROCARBON RADICAL OF AT LEAST 10 CARBON ATOMS, (2) REACTION PRODUCTS OF FORMALDEHYDE WITH THE ADDITION PRODUCT OF SODIUM BISULFITE TO AN ALIPHATIC ISOCYANATE CONTAINING A HYDROCARBON RADICAL OF AT LEAST 10 CARBON ATOMS, (3) ADDITION PRODUCTS OF SODIUM BISULFITE TO AN ALIPHATIC ISOCYANATE CONTAINING A HYDROCARBON RADICAL OF AT LEAST 10 CARBON ATOMS, IN MIXTURE WITH AN ALIPHATIC AMINE OF MOLECULAR WEIGHT IN THE FORM OF ITS FORMALDEHYDE-BISULFITE-COMPOUND, AND (4) DIISOCYANATES CONTAINING A HYDROCARBON RADICAL OF LESS THAN 10 CARBON ATOMS, IN MIXTURE WITH AN ALIPHATIC AMINE CONTAINING A HYDROCARBON RADICAL OF AT LEAST 10 CARBON ATOMS WHICH AMINE IS PRESENT IN THE FORM OF ITS FORMALDEHYDE-BISULFITE-ADDITION PRODUCT; HEATING AND DRYING THE MATERIALS CONTACTED.
References Cited (Backward Citations)
US1792457A
Cited
US2314968A
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US2343920A
Cited
US2335582A
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US2333917A
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US2430479A
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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) | 1958-05-16 | 1958-11-15 | 1959-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-16 | 1962-11-15 | 1963-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-16 | 1966-11-15 | 1967-05-17 | $7700.00 | Window Closed / Lapsed |