US4515596A
Expired / Lapsed
US
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Process for aftertreating dyed fibrous material made of or containing cellulose
Assignee: Novartis Corp
•
Filing: 1983-07-15
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Granted: 1985-05-07
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Expires: 2003-07-15
Abstract
Abstract Dyed fibrous materials made of or containing cellulose which were not bleached before dyeing are aftertreated in a combined bleaching and washing bath which can, optionally, contain as stabilizers derivatives of phosphonic or phosphorous acid, optionally as a combination with polyhydroxy compounds. The resulting materials have bright and brilliant shades. This aftertreatment makes it possible to by-pass the otherwise customary, time-consuming and expensive drying of the materials between a bleach before dyeing and the dyeing itself.
Inventors
- 👤 Hans-Ulrich Berendt
- 👤 Marielise Pacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:22
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/02; D06L; D06L4/00; D06L4/10; D06L4/12; D06P1/00; D06P1/44; D06P1/667; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
93 words
A process for treating unbleached cellulose fiber material comprising the steps of (i) dyeing said material with a vat, direct or reactive dye which is stable to the liquor used in step (ii) and subsequently (ii) bleaching and washing the dyed material in a liquor containing a bleaching agent and a stabilizer selected from the group consisting of (a) an adduct of an aminoalkanediphosphonic acid and an epihalogenohydrin, (b) a phosphonate oligomer, and (c) a reaction product of phosphorous acid and a carboxylic acid anhydride or halide, or a mixture of said stabilizers.
Claim 2
Dependent Claim
93 words
A process for treating unbleached cellulose fiber material comprising the steps of (i) dyeing said material with a vat, direct or reactive dye which is stable to the liquor used in step (ii) and subsequently (ii) bleaching and washing the dyed material in a liquor containing a bleaching agent and a stabilizer selected from the group consisting of (a) an adduct of an aminoalkanediphosphonic acid and an epihalogenohydrin, (b) a phosphonate oligomer, and (c) a reaction product of phosphorous acid and a carboxylic acid anhydride or halide, or a mixture of said stabilizers.
Claim 3
Dependent Claim
12 words
The process of claim 1, wherein the dye is a reactive dye.
Claim 4
Dependent Claim
34 words
The process of claim 1, wherein compound (a) is of the formula ##STR12## in which R is alkyl having 1 to 4 carbon atoms, X 1 is halogen, and n is 1 or 2.
Claim 5
Dependent Claim
17 words
The process of claim 3, wherein the adduct is in the form of an alkali metal salt.
Claim 6
Dependent Claim
62 words
The process of claim 1, wherein component (b) is of the formula ##STR13## in which Y 1 is hydrogen or a radical of the formula -COT 1 in which T 1 is alkyl having 1 to 4 carbon atoms, R and Q 1 each are alkyl having 1 to 4 carbon atoms, and n 1 is an integer from 1 to 16.
Claim 7
Dependent Claim
20 words
The process of claim 5, wherein the oligomer is at least partly in the form of an alkali metal salt.
Claim 8
Dependent Claim
19 words
The process of claim 1, wherein the oligomer of component (b) is in the form of a magnesium complex.
Claim 9
Dependent Claim
21 words
The process of claim 7, wherein the molar ratio of oligomer to magnesium in the magnesium complex is 1:0.1 to 1:4.5.
Claim 10
Dependent Claim
37 words
The process of 1, wherein component (c) is a reaction product of phosphorous acid with an alkanecarboxylic anhydride or alkanecarbonyl halide having 2 to 4 carbon atoms in the alkane radical, in a molar ratio of 1:1-1.5.
Claim 11
Dependent Claim
37 words
The process of 1, wherein component (c) is a reaction product of phosphorous acid with an alkanecarboxylic anhydride or alkanecarbonyl halide having 2 to 4 carbon atoms in the alkane radical, in a molar ratio of 1:1-1.5.
Claim 12
Dependent Claim
18 words
The process of claim 9, wherein the reaction product is in the form of an alkali metal salt.
Claim 13
Dependent Claim
16 words
The process of claim 1, wherein the liquor of step (ii) further contains a polyhydroxy compound.
Claim 14
Dependent Claim
48 words
The process of claim 11, wherein the polyhydroxy compound is of the formula ##STR14## in which R 1 and R 2 , independently of each other, are --CH 2 OH, --CHO or --CO 2 M, M is hydrogen or an alkali metal, and x is 2 to 5.
Claim 15
Dependent Claim
19 words
The process of claim 12, wherein R 1 is --CH 2 OH and R 2 is --CO 2 M.
Claim 16
Dependent Claim
30 words
The process of claim 8, wherein the liquor of step (ii) further contains a polyhydroxy compound and wherein the molar ratio of oligomer:magnesium:polyhydroxy compound is in the range of 1:(0.1-4.5):(0.1-10).
Claim 17
Dependent Claim
51 words
The process of claim 2, wherein the reactive dye contains, as a reactive group, an epoxy group, an ethyleneimino group, an isocyanate group, an isothiocyanate group, an acid radical having at least one halogen atom and/or a multiple bond capable of addition, or a radical of a halogenated aromatic nitrogen-containing ring.
Claim 18
Dependent Claim
44 words
The process of claim 15, wherein the reactive group is a β-chloropropionic acid group, or a β-bromopropionic acid group, an acrylic acid group, a methacrylic acid group, an α,β-dichloroacrylic acid group, an α,β-dibromoacrylic acid group, a halogenated pyrimidine group or a halogenated triazine group.
Claim 19
Dependent Claim
14 words
The process of claim 16, wherein the reactive group is a halogenated triazine group.
Claim 20
Dependent Claim
21 words
The process of claim 1, wherein step (ii) is carried out at 20° to 100° C. for 10 to 40 minutes.
Claim 21
Dependent Claim
11 words
The cellulose fiber material treated by the process of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |