US2926987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of phenylphenol dyeing assistant compositions
Assignee: GAF Chemicals Corp
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Filing: 1956-04-30
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Granted: 1960-03-01
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Expires: 1976-04-30
Abstract
No abstract record available.
Inventors
- 👤 Harlan B Freyermuth
- 👤 Charles L Lawsberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:21
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; Y; Y10; Y10S; Y10S8/00; Y10S8/908; Y10S8/912
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A PROCESS FOR DYEING A TEXTILE STRUCTURE WHEREIN THE DYEING MEDIUM COMPRESES A DYESTUFF FOR THE MATERIAL OF THE TEXTILE STRUCTURE AND A DYEING ASSISTANT COMPOSITION, THE IMPROVEMENT WHICH COMPRISES THE USE, IN COMBINATION WITH THE DYESTUFF, OF A DYEING ASSISTANT COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSED POWDER PREPARED BY MILLING A MIXTURE OF A PHENYLPHENOL SELECTED FROM THE GROUP CONSISTING OF ORTHOPHENYLPHENOL AND PARAPHENYLPHENOL, AND ANIONIC DISPERSING AGENT AND WATER IN A VISCOUS STATE, PASSING STEAM THROUGH SAID MIXTURE DURING THE MILLING THEREOF TO REMOVE PART OF SAID WATER, CONTINUING THE MILLING OF SAID MIXTURE UNTIL A DRY POWDER IS OBTAINED, SUBJECTING SAID DRY POWDER TO THE ACTION OF HEAT, AND THEN GRINDING SAID POWDER TO GREATER FINENESS,
Claim 2
Dependent Claim
120 words
IN A PROCESS FOR DYEING A TEXTILE STRUCTURE WHEREIN THE DYEING MEDIUM COMPRESES A DYESTUFF FOR THE MATERIAL OF THE TEXTILE STRUCTURE AND A DYEING ASSISTANT COMPOSITION, THE IMPROVEMENT WHICH COMPRISES THE USE, IN COMBINATION WITH THE DYESTUFF, OF A DYEING ASSISTANT COMPOSITION CONSISTING ESSENTIALLY OF A DISPERSED POWDER PREPARED BY MILLING A MIXTURE OF A PHENYLPHENOL SELECTED FROM THE GROUP CONSISTING OF ORTHOPHENYLPHENOL AND PARAPHENYLPHENOL, AND ANIONIC DISPERSING AGENT AND WATER IN A VISCOUS STATE, PASSING STEAM THROUGH SAID MIXTURE DURING THE MILLING THEREOF TO REMOVE PART OF SAID WATER, CONTINUING THE MILLING OF SAID MIXTURE UNTIL A DRY POWDER IS OBTAINED, SUBJECTING SAID DRY POWDER TO THE ACTION OF HEAT, AND THEN GRINDING SAID POWDER TO GREATER FINENESS,
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) | 1963-03-01 | 1963-08-31 | 1964-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-01 | 1967-08-31 | 1968-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-01 | 1971-08-31 | 1972-03-01 | $7700.00 | Window Closed / Lapsed |