Patent US4465776A successfully refreshed from Google Patents.
Patent US4478737A successfully refreshed from Google Patents.
US4478737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid oxidative desizing agent and process for oxidative desizing
Assignee: Clariant Produkte Deutschland GmbH
•
Filing: 1983-03-24
•
Granted: 1984-10-23
•
Expires: 2003-03-24
Abstract
Abstract Oxidative desizing agent consisting substantially of from 5 to 20 weight % of sodium or ammonium persulfate or potassium, sodium, ammonium or calcium peroxodiphosphate, from 20 to 50 weight % of one or more surfactants selected from the group of C 8 -C 20 -sec.-alkanesulfonates, C 4 -C 12 -alkylphenol-oxethylates having 6 to 12 ethylene oxide moieties, or C 10 -C 18 -fatty alcohol-oxethylates having 3 to 8 ethylene oxide moieties, and water in the amount remaining to give 100%. The advantage of this desizing agent resides in the fact that a substantially smaller amount of persulfate is required than for desizing with persulfate alone. Moreover, this desizing agent is liquid and thus easy to be dosed.
Inventors
- 👤 Klaus Adrian
- 👤 Gunter Rosch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 06:47
CPC Classifications
D; D06; D06L; D06L1/00; D06L1/12; D06L1/14
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
80 words
Oxidative desizing agent consisting substantially of from 5 to 20 weight % of sodium or ammonium persulfate or potassium, sodium, ammonium or calcium peroxodiphosphate, from 20 to 50 weight % of one or more surfactants selected from the group of C 8 -C 20 -sec.-alkanesulfonates, C 4 -C 12 -alkylphenol-oxethylates having 6 to 12 ethylene oxide moieties, or C 10 -C 18 -fatty alcohol-oxethylates having 3 to 8 ethylene oxide moieties, and water in the amount remaining to give 100%.
Claim 2
Dependent Claim
80 words
Oxidative desizing agent consisting substantially of from 5 to 20 weight % of sodium or ammonium persulfate or potassium, sodium, ammonium or calcium peroxodiphosphate, from 20 to 50 weight % of one or more surfactants selected from the group of C 8 -C 20 -sec.-alkanesulfonates, C 4 -C 12 -alkylphenol-oxethylates having 6 to 12 ethylene oxide moieties, or C 10 -C 18 -fatty alcohol-oxethylates having 3 to 8 ethylene oxide moieties, and water in the amount remaining to give 100%.
Claim 3
Dependent Claim
28 words
Oxidative desizing agent as claimed in claim 1, which comprises an alkanesulfonate and an alkylphenol-oxethylate or fatty alcohol oxethylate in a weight ratio of from 1:6 to 6:1.
References Cited (Backward Citations)
US2173040A
Cited
US4309298A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-10-23 | 1988-04-23 | 1988-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-23 | 1992-04-23 | 1992-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-23 | 1996-04-23 | 1996-10-23 | $7700.00 | Window Closed / Lapsed |