US3990839A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for obtaining irregular shadow dyeings on polyester fibers and mixtures thereof
Assignee: Hoechst AG
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Filing: 1974-08-14
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Granted: 1976-11-09
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Expires: 1994-08-14
Abstract
Abstract Process for obtaining irregular tone-in-tone effects, shadow effects or multi-color effects on polyester fibers and blends thereof by padding polyester fiber-containing warps with sizing liquors which contain in addition to sizing agents alkali-susceptible disperse dyestuffs, with subsequent drying and waving with weft yarn undyed or dyed in a different kind, without prior fixation, which process comprises binding the piece-goods so obtained to a rope, loosely tying them and spraying them with aqueous solutions of alkalis which are free from oxidizing or reducing chemicals, irregularly and unevenly from outside, thermosoling them after opening the rope to fix the dyestuff and after-treating them.
Inventors
- 👤 Hans-Ulrich von der Eltz
- 👤 Hans-Peter Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:30
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/15; D06P5/151; C; C09; C09B; C09B29/00; C09B29/06; C09B29/08; D06B; D06B11/00; D06B11/0056; D06P1/00; D06P1/0036; D06P1/0096; D06P1/44; D06P1/673; D06P1/67333; D06P1/6735; D06P3/00; D06P3/34; D06P3/52; D06P3/54; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8238; D06P3/8252; D06P7/00; Y; Y10; Y10S; Y10S8/00; Y10S8/04; Y10S8/908; Y10S8/92; Y10S8/922; Y10S8/933
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
175 words
A process for obtaining irregular tone-in-tone effects, shadow effects or multi-color effects on polyester fibers and blends thereof with cellulose fibers by padding polyester fiber-containing warps with a sizing liquor which contains, in addition to a sizing agent, a disperse dyestuff of the formula ##EQU3## wherein A is a mono or disazo dyestuff radical, R 1 is a direct bond, --CH 2 -- or --C 2 H 4 --, R 2 is --CH 2 -- or --C 2 H 4 --, Z 1 is --H, --OH, --CN or --OOC--CH 3 , Z 2 is --H, --CN, --OOC--CH 3 , ##EQU4## or ##SPC9## with subsequent drying and weaving these warps with weft yarn which is undyed or dyed in a different manner, without prior fixation, which process comprises binding the piece goods so obtained to a rope, loosely tying them and spraying them with an aqueous solution of an alkaline agent which is free from oxidizing or reducing agents, irregularly and unevenly from the outside, and thermosoling them after opening the rope to fix the dyestuff.
Claim 2
Dependent Claim
175 words
A process for obtaining irregular tone-in-tone effects, shadow effects or multi-color effects on polyester fibers and blends thereof with cellulose fibers by padding polyester fiber-containing warps with a sizing liquor which contains, in addition to a sizing agent, a disperse dyestuff of the formula ##EQU3## wherein A is a mono or disazo dyestuff radical, R 1 is a direct bond, --CH 2 -- or --C 2 H 4 --, R 2 is --CH 2 -- or --C 2 H 4 --, Z 1 is --H, --OH, --CN or --OOC--CH 3 , Z 2 is --H, --CN, --OOC--CH 3 , ##EQU4## or ##SPC9## with subsequent drying and weaving these warps with weft yarn which is undyed or dyed in a different manner, without prior fixation, which process comprises binding the piece goods so obtained to a rope, loosely tying them and spraying them with an aqueous solution of an alkaline agent which is free from oxidizing or reducing agents, irregularly and unevenly from the outside, and thermosoling them after opening the rope to fix the dyestuff.
Claim 3
Dependent Claim
25 words
The process as defined in claim 1 wherein the alkaline agent is a hydroxide, carbonate or triphosphate of an alkali metal or a mixture thereof.
Claim 4
Dependent Claim
18 words
The process as defined in claim 2 in which the alkalinie agent is sodium hydroxide or sodium carbonate.
Claim 5
Dependent Claim
43 words
A process as defined in claim 1 wherein the aqueous solution contains 1 to 25 g/l of sodium hydroxide or 1 to 20 g/l of sodium carbonate or a mixture thereof within these ranges and has a pH value of 10.5 to 14.
Claim 6
Dependent Claim
22 words
The process as defined in claim 1 of treating polyester fiber/cellulose blends which comprises adding a reactive dyestuff to the aqueous solution.
Claim 7
Dependent Claim
18 words
The process as defined in claim 1 wherein an alkali-resistant disperse dyestuff is added to the aqueous solution.
References Cited (Backward Citations)
US3352624A
Cited
US713837A
Cited
US763196A
Cited
US1615205A
Cited
US3189578A
Cited
US3265461A
Cited
FR1453148A
Cited
US3634580A
Cited
US3787175A
Cited
US3787176A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-11-09 | 1980-05-10 | 1980-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-09 | 1984-05-10 | 1984-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-09 | 1988-05-10 | 1988-11-09 | $7700.00 | Window Closed / Lapsed |