US3671307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crease-proofing compositions containing glyoxal modified uron resins and processes for making same
Assignee: Dan River Inc
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Filing: 1969-12-04
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Granted: 1972-06-20
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Expires: 1989-12-04
Abstract
Abstract CREASE-PROOFING COMPOSITIONS CONTAINING METHYLOL URONS AND/OR ALKYL ETHERS OF SAME AND METHYLOL-4,5-DIHYDROXY2-IMIDAZOLIDINONE AND/OR ALKYL ETHERS OF SAME SUBSTANTIALLY FREE OF METHYLOL UREAS AND ALKYL ETHERS THEREOF. THESE COMPOSITIONS ARE MADE BY CONTACTING URON PREPARATIONS, MADE BY REACTING UREA AND FORMALDEHYDE, WITH OR WITHOUT AN ALKANOL, WITH GLYOXAL TO CONVERT METHYLOL UREAS AND ALKYL ETHERS THEREOF ORDINARILY CONTAINED IN SUCH URON PREPARTIONS INTO METHYLOL-4,5-DIHYDROXY-2-IMIDAZOLIDINONE AND/OR ALKYL ETHERS THEREOF. CELLULOSIC TEXTILES TREATED WITH THE RESULTING COMPOSITIONS ARE CHARACTERIZED BY UNEXPECTEDLY LOW RETAINED CHLORINE DAMAGE.
Inventors
- 👤 Myrtle Joanne Spangler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:25
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34; C08G12/36; 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
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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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |