Patent US3713767A successfully refreshed from Google Patents.
US3713767A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the dyeing of textile material of mixtures of polyester fibers and cellulose fibers
Assignee: Hoechst AG
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Filing: 1970-06-22
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Granted: 1973-01-30
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Expires: 1990-06-22
Abstract
Abstract Process for the dyeing of textile materials consisting of mixtures of polyester fibers with cellulose fibers, wherein the said textile materials are treated with an alkaline solution which contains a coupling component, a disperse dyestuff and wetting or dispersing agents, dried and subsequently treated with an acid solution, which contains, in addition to compounds having an acid reaction, a diazotized aromatic or heterocyclic amine, dried and then subjected to a heat treatment.
Inventors
- 👤 R Lowenfeld
- 👤 U Kosubek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:42
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/68; D06P3/34; D06P3/52; D06P3/54; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8238; D06P3/8257; Y; Y10; Y10S; Y10S8/00; Y10S8/908; Y10S8/912; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
76 words
A process for dyeing textile materials consisting of mixtures of polyester and cellulose fibers, which comprises treating the textile material with alkaline solutions containing a coupling component, at least one disperse dyestuff, as well as wetting or dispersing agents, drying the material and subsequently treating it with acid solutions which contain, in addition to compounds giving an acid reaction, a diazotized aromatic or heterocyclic amine, drying the material and then subjecting it to a heat treatment.
Claim 2
Dependent Claim
76 words
A process for dyeing textile materials consisting of mixtures of polyester and cellulose fibers, which comprises treating the textile material with alkaline solutions containing a coupling component, at least one disperse dyestuff, as well as wetting or dispersing agents, drying the material and subsequently treating it with acid solutions which contain, in addition to compounds giving an acid reaction, a diazotized aromatic or heterocyclic amine, drying the material and then subjecting it to a heat treatment.
Claim 3
Dependent Claim
24 words
The process as claimed in claim 1, wherein the coupling component is an aromatic or heterocyclic o-hydroxy-carboxylic acid aryl amide or an acylaceto-aryl amide.
Claim 4
Dependent Claim
19 words
The process as claimed in claim 1, wherein the diazo compound is of the benzene, diphenyl or azobenzene series.
Claim 5
Dependent Claim
18 words
The process as claimed in claim 1, wherein the disperse dye is of the azo or anthraquinone series.
Claim 6
Dependent Claim
42 words
The process as claimed in claim 1, wherein the wetting or dispersing agent is a condensation product of a long chain fatty acid and an aminoalkyl sulfonic acid or of formaldehyde and a naphthalene sulfonic acid or a purified waste lignin liquor.
Claim 7
Dependent Claim
24 words
The process as claimed in claim 1, wherein the acid impregnation is effected at a pH in the range of from about 4 to
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) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |