Patent US3980426A successfully refreshed from Google Patents.
US3980426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for printing or pad-dyeing cellulose/polyester mixed fabrics
Assignee: Hoechst AG
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Filing: 1975-01-30
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Granted: 1976-09-14
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Expires: 1995-01-30
Abstract
Abstract A process for the pad-dyeing or printing of textile material consisting of cellulose and polyester fibers with fiber-reactive and dispersion dyestuffs which comprises printing or padding the textile material with a printing paste or padding liquor which contains besides the usual printing auxiliaries and the dyestuffs mentioned an alkali salt of the formic acid as well as carriers, levelling and/or dispersing agents, fixing the dyestuffs by dry heat at temperatures above 150°C or by hot steam at temperatures above 140°C, and completing the prints or pad dyeings in usual manner.
Inventors
- 👤 Erich Feess
- 👤 Sienling Ong
- 👤 Hans Helmut Steuernagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:38
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/66; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65125; D06P1/653; D06P1/6533; D06P3/34; D06P3/52; D06P3/54; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8238; D06P3/8252; D06P5/00; D06P5/20; D06P5/2066; D06P5/2077; Y; Y10; Y10S; Y10S8/00; Y10S8/933
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
89 words
A process for the pad-dyeing or printing of textile material consisting of cellulose and polyester fibres with fibre-reactive and dispersion dyestuffs which comprises printing or padding the textile material with a printing paste or padding liquor which contains besides the usual printing auxiliaries and the dyestuffs mentioned an alkali salt of formic acid as well as carriers, levelling and/or dispersing agents, fixing the dyestuffs by dry heat at temperatures above 150°C or by hot steam at temperatures above 140°C, and completing the prints or pad dyeings in usual manner.
Claim 2
Dependent Claim
89 words
A process for the pad-dyeing or printing of textile material consisting of cellulose and polyester fibres with fibre-reactive and dispersion dyestuffs which comprises printing or padding the textile material with a printing paste or padding liquor which contains besides the usual printing auxiliaries and the dyestuffs mentioned an alkali salt of formic acid as well as carriers, levelling and/or dispersing agents, fixing the dyestuffs by dry heat at temperatures above 150°C or by hot steam at temperatures above 140°C, and completing the prints or pad dyeings in usual manner.
Claim 3
Dependent Claim
16 words
The process as claimed in claim 1, wherein the sodium salt of formic acid is used.
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) | 1979-09-14 | 1980-03-15 | 1980-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-14 | 1984-03-15 | 1984-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-14 | 1988-03-15 | 1988-09-14 | $7700.00 | Window Closed / Lapsed |