US3862224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of textile finishes
Assignee: Individual
•
Filing: 1972-10-18
•
Granted: 1975-01-21
•
Expires: 1992-10-18
Abstract
Abstract A process for the production of textile finishes based on ethylene glycol, formaldehyde, glyoxal and urea, particularly for finishing union cloth containing cellulose.
Inventors
- 👤 Harro Petersen
- 👤 Heinz Bille
- 👤 Guenter Reuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:54
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
24 words
A process as claimed in claim 1 in which ethylene glycol and formaldehyde are used in a molar ratio of from 1:2.0 to 1:2.5.
Claim 2
Dependent Claim
15 words
A process as claimed in claim 1 in which the acid is a mineral acid.
Claim 3
Dependent Claim
24 words
A process as claimed in claim 1 wherein the reaction in the second stage takes place at a pH of from 6.2 to 6.8.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |