US3655437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for textiles with aqueous liquors of polyisocyanates and silica sols
Assignee: Bayer AG
•
Filing: 1969-03-27
•
Granted: 1972-04-11
•
Expires: 1989-03-27
Abstract
Abstract An improvement in the process of treating textile materials with aqueous compositions of polyisocyanate materials containing freeisocyanate groups is obtained by incorporating silica sol in the composition. The presence of the silica sol allows the compositions to be applied by the exhaustion method. Optionally, emulsion stabilizer, e.g., polymers of vinyl monomers can be added, as well as electrolytes which speed up drawing onto the textile fibers.
Inventors
- 👤 Gustav Becker
- 👤 Heinz Griepentrog
- 👤 Wolfgang Klebert
- 👤 Friedrich Reich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:16
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
15 words
The process of claim 1 wherein the aqueous liquor contains, in addition, an emulsion stabilizer.
Claim 2
Dependent Claim
19 words
The process of claim 2 wherein the emulsion stabilizers are polymers or copolymers prepared from vinyl or divinyl monomers.
Claim 3
Dependent Claim
14 words
The process of claim 2 wherein the aqueous liquor contains, in addition, an electrolyte.
Claim 4
Dependent Claim
17 words
The process of claim 1 wherein the ratio of textile material to liquor is 1:6 to 1:50.
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) | 1975-04-11 | 1975-10-11 | 1976-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-04-11 | 1979-10-11 | 1980-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-04-11 | 1983-10-11 | 1984-04-11 | $7700.00 | Window Closed / Lapsed |