Patent US2803564A successfully refreshed from Google Patents.
US2803564A
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Acetylene diurea-formaldehyde reaction product and treatment of textiles therewith
Assignee: Dan River Mills Inc
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Filing: 1953-05-18
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Granted: 1957-08-20
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Expires: 1973-05-18
Abstract
No abstract record available.
Inventors
- 👤 Dmitry M Gagarine
- 👤 Repokis Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:01
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2393; Y10T442/2762; Y10T442/277; Y10T442/2828; Y10T442/2852
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
THE PROCESS PF PREPARING TEXTILE TREATING MATERIALS WHICH COMPRISES REACTING ONE MOLE OF ACTEYLENE WITH DIUREA FROM ABOUT 3 TO 4 MOLS OF FORMALDEHYDE TO PRODUCE THE METHYLOTATED COMPOUND, AND THEN REACTING THE THUS FORMED POLYMETHYLOL ACETYLENE DIUREA WITH FROM ABOUT 6 TO 17 MOLS OF FORMALDEHYDE IN THE PRESENCE OF A SMALL AMOUNT OF WATER LESS THAN THE AMOUNT REQUIRED TO SUPPLY THE TOTAL QUANTITY OF FORMALDE IN THE PRESENCE OF A SOLUTION, SAID LEST REACTION BEING CRRIED OUT AT A PH BETWEEN 2 AND 5 AND AT A RELATIVELY LOW TEMPERATURE IN THE NATURE OF ABOUT 90 TO 95*C.
Claim 2
Dependent Claim
101 words
THE PROCESS PF PREPARING TEXTILE TREATING MATERIALS WHICH COMPRISES REACTING ONE MOLE OF ACTEYLENE WITH DIUREA FROM ABOUT 3 TO 4 MOLS OF FORMALDEHYDE TO PRODUCE THE METHYLOTATED COMPOUND, AND THEN REACTING THE THUS FORMED POLYMETHYLOL ACETYLENE DIUREA WITH FROM ABOUT 6 TO 17 MOLS OF FORMALDEHYDE IN THE PRESENCE OF A SMALL AMOUNT OF WATER LESS THAN THE AMOUNT REQUIRED TO SUPPLY THE TOTAL QUANTITY OF FORMALDE IN THE PRESENCE OF A SOLUTION, SAID LEST REACTION BEING CRRIED OUT AT A PH BETWEEN 2 AND 5 AND AT A RELATIVELY LOW TEMPERATURE IN THE NATURE OF ABOUT 90 TO 95*C.
References Cited (Backward Citations)
FR858223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |