Detergents and cleansers
Abstract
Abstract NOVEL DETERGENT AND CLEANSING AGENTS ARE DISCLOSED CHARACTERIZED BY THEIR ABILITY TO INHIBIT THE GRAYING OF TEXTILE ARTICLES WHICH TAKES PLACE IN LAUNDERING. IN PARTICULAR, THE NOVEL DETERGENT AND CLEANSING AGENTS ARE EFFECTIVE TO PREVENT THE GRAYING OF TEXTILE ARTICLES PREPARED AT LEAST IN PART WITH SYNTHETIC FIBERS. THE DETERGENT AND CLEANING AGENTS OF THE INVENTION ARE CHARACTERIZED BY A CONTENT OF 0.1 TO 20 WT.-PERCENT REFERRED TO THE TOTAL COMPOSITION OF AT LEAST ONE WATER SOLUBLE SALT OF A FREE CARBOXYL GROUP CONTAINING POLYAMIDE, THE ACID AND AMIDE RADICALS OF WHICH RESPECTIVELY ARE DERIVED FROM TRICARBOXYLIC AND/OR TETRACARBOXYLIC ACIDS AND DIAMINES. IN ADDITION TO THE AFORESAID POLYAMIDE SALTS, THE DETERGENT AND CLEANING AGENTS CONTAIN THE CONVENTIONAL SURFACE ACTIVE MATERIALS AND THE USUAL ADDITIVES SUCH AS OPTICAL BRIGHTENERS, BLEACHING AGENTS, SUDERS, ANTI-FOAMERS, ETC.
Inventors
- 👤 Edmund Schmadel
- 👤 Walter Kling
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |