Patent US2817575A successfully refreshed from Google Patents.
US2817575A
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US
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Process for dyeevg wool with com-
Assignee: —
•
Filing: —
•
Granted: 1957-12-24
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Expires: 1974-12-24
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:46
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/14; D06P1/00; D06P1/02; D06P1/10; D06P1/38; D06P3/58; D06P3/60; D06P3/66; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A METHOD FOR THE DYEING OF WOOLWITH COMPLEX HEAVY METAL COMPOUNDS OF DYESTUFFS SELECTED FROM THE GROUP CONSISTING OF MONOAZO AND AZO METHINE DYESTUFFS OF THE TYPE CONTAINING TWO DYESTUFF MOLECULES TO ONE HEAVY METAL ATOM WHICH CONTAIN NO ACID WATER SOLUBILISING GROUPS, WHICH COMPRISES PRE-TREATING WOOL IN CIRCULATING HOT WATER WITH A STRONGLY DISSOCIATING POLYBASIC MINERAL ACID, ADJUSTING THE ACID REACTION OF SAID HOT WATER TO A FINAL PH VALUE OF FROM 4 TO 6 AT THE END OF THE PRETREATMENT, THEN ADDING AN AQUEOUS SOLUTION OF THE DYESTUFF AT A TEMPERATURE OF AT LEAST 80*C. AND DYEING AT A TEMPERATURE OF FROM 85* TO 100*C. IN THE PRESENCE OF AN ADDITION PRODUCT OF FROM 10 TO 30 MOLS OF ETHYLENE OXIDE TO A HYDROXY COMPOUND OF A LIPOPHILIC HYDROCARBON UNTIL THE DYE-LIQUOR IS SUBSTANTIALLY FREE FROM DYESTUFF.
Claim 2
Independent Claim
139 words
A METHOD FOR THE DYEING OF WOOLWITH COMPLEX HEAVY METAL COMPOUNDS OF DYESTUFFS SELECTED FROM THE GROUP CONSISTING OF MONOAZO AND AZO METHINE DYESTUFFS OF THE TYPE CONTAINING TWO DYESTUFF MOLECULES TO ONE HEAVY METAL ATOM WHICH CONTAIN NO ACID WATER SOLUBILISING GROUPS, WHICH COMPRISES PRE-TREATING WOOL IN CIRCULATING HOT WATER WITH A STRONGLY DISSOCIATING POLYBASIC MINERAL ACID, ADJUSTING THE ACID REACTION OF SAID HOT WATER TO A FINAL PH VALUE OF FROM 4 TO 6 AT THE END OF THE PRETREATMENT, THEN ADDING AN AQUEOUS SOLUTION OF THE DYESTUFF AT A TEMPERATURE OF AT LEAST 80*C. AND DYEING AT A TEMPERATURE OF FROM 85* TO 100*C. IN THE PRESENCE OF AN ADDITION PRODUCT OF FROM 10 TO 30 MOLS OF ETHYLENE OXIDE TO A HYDROXY COMPOUND OF A LIPOPHILIC HYDROCARBON UNTIL THE DYE-LIQUOR IS SUBSTANTIALLY FREE FROM DYESTUFF.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-23 | 1961-06-24 | 1961-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-23 | 1965-06-24 | 1965-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-23 | 1969-06-24 | 1969-12-24 | $7700.00 | Window Closed / Lapsed |