US2955324A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of improving the dye receptivity in mechanically stressed solid polymers
Assignee: EIDP Inc
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Filing: 1953-05-18
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Granted: 1960-10-11
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Paul W Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:19
CPC Classifications
D; D01; D01F; D01F2/00; D01F2/24; D01F2/28; D01F1/00; D01F1/02; D01F1/10; Y; Y10; Y10S; Y10S8/00; Y10S8/04; Y10S8/10; Y10S8/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
THE NOVEL PROCESS COMPRISING PROVIDING A SOLUTION, IN EQUAL PARTS OF ACETONE AND DIMETHYLFORNAMIDE, OF (1) CELLULOSE ACETATE CAPABLE OF PRONOUNCED SWELLING IN WATER AND (2) FROM ABOUT 1% TO ABOUT 30% BY WEIGHT OF A POLYMERIC AMINO ALCOHOL ESTER OF AN ACID TAKEN FROM THE GROUP CONSISTING OF ACRYLIC ACID AND ALPHAMETHYL-ACRYLIC ACID, SAID ESTER RENDERING THE CELLULOSE ACETATE ACID-DYE-RECEPTIVE, ADDING A POLYBASIC ACID TO SAID SOLUTION IN AN AMOUNT BETWEEN ABOUT 1% AND ABOUT 15% BY WEIGHT SUFFICIENT TO INHIBIT ACID-DYE-RECEPTIVITY, SAID ACID BEING TAKEN FROM THE GROUP CONSISTING OF MALEIC, ADIPIC, SEBACIC, SUCCINIC, SULFURIC, PHOSPHORIC, FUMARIC, A-TARTARIC, OXALIC DIHYDRATE, TEREPHTHALIC, ISOPHTHALIC, ORTHO-PHTHALIC, 1,1-CYCLOHEXANE DICARBOXYLIC, AND
Claim 2
Dependent Claim
108 words
THE NOVEL PROCESS COMPRISING PROVIDING A SOLUTION, IN EQUAL PARTS OF ACETONE AND DIMETHYLFORNAMIDE, OF (1) CELLULOSE ACETATE CAPABLE OF PRONOUNCED SWELLING IN WATER AND (2) FROM ABOUT 1% TO ABOUT 30% BY WEIGHT OF A POLYMERIC AMINO ALCOHOL ESTER OF AN ACID TAKEN FROM THE GROUP CONSISTING OF ACRYLIC ACID AND ALPHAMETHYL-ACRYLIC ACID, SAID ESTER RENDERING THE CELLULOSE ACETATE ACID-DYE-RECEPTIVE, ADDING A POLYBASIC ACID TO SAID SOLUTION IN AN AMOUNT BETWEEN ABOUT 1% AND ABOUT 15% BY WEIGHT SUFFICIENT TO INHIBIT ACID-DYE-RECEPTIVITY, SAID ACID BEING TAKEN FROM THE GROUP CONSISTING OF MALEIC, ADIPIC, SEBACIC, SUCCINIC, SULFURIC, PHOSPHORIC, FUMARIC, A-TARTARIC, OXALIC DIHYDRATE, TEREPHTHALIC, ISOPHTHALIC, ORTHO-PHTHALIC, 1,1-CYCLOHEXANE DICARBOXYLIC, AND
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) | 1963-10-11 | 1964-04-11 | 1964-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-11 | 1968-04-11 | 1968-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-11 | 1972-04-11 | 1972-10-11 | $7700.00 | Window Closed / Lapsed |