Fiber and fabric treating
Abstract
Abstract HYBRID POLYMERS PROVIDE SUFFICIENT OLEPHOBICITY AND HYDROPHILICITY IN WATER SO THAT FABRICS TREATED THEREWITH HAVE INCREASED ABILITY TO RELEASE OILY STAINS ON LAUNDERING. OLEOPHOBIC AND HYDROPHILIC MOIETIES ARE COMBINED IN COATABLE COPOLYMERS SO THAT THE RELATIVE MOBILITY OF THE MOIETIES IS ASSUMED UNDER SOME SET OF CONDITIONS OF TEMPERATURE AND ENVIROMENT. SURFACES TREATED WITH THE RESULTING COPOLYMERS RESPOND REVERSIBLY TO CHANGES OF ENVIRONMENT, E.GG. GASEOUS TO AQUEOUS MILIEU AND VICE VERSA, BY A CHANGE IN KIND OF PROPERTIES. AS A NON-LIMITING EXAMPLE, FLUOROCHEMICAL MOIETIES AND HYDROPHILIC POLYETHER MOIETIES ARE COMBINED THROUGH SULFUR ATOMS TO GIVE POLYMERS WHICH ARE APLIED AS OIL AND WATER-REPELLANT TREATMENTS WITH OTHER, E.G. CREASE RESISTANT, TEXTILE TREATMENTS. FABRICS THUS TREATED ARE REPEATEDLY LAUNDERABLE TO REMOVE OILY STAINS.
Inventors
- 👤 P Sherman
- 👤 S Smith
Bibliographic Details
Claims Analysis
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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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |