US3841887A
Expired / Lapsed
US
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Dyestuff compositions containing lignin surfactants carboxy substituted
Assignee: Westvaco Corp
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Filing: 1972-07-27
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Granted: 1974-10-15
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Expires: 1992-07-27
Abstract
Abstract Dyestuff compositions comprising an admixture of a dye cake, i.e., disperse dyes and vat dyes, and up to 75 percent by weight of an improved lignin surfactant. The improved lignin surfactant is the lignin-carboxymethylene derivative made by reacting with an alkali lignin or sulfonated lignin up to 20 moles, preferably from 1 to 10 moles (per 1,000 grams of lignin), of a halogencontaining methane carboxylic acid. The preferred reactant is chloroacetic acid or the sodium salt of chloroacetic acid. These improved sulfonated lignin adducts are lighter in color, and lessen or eliminate fiber staining, diazo dye reduction and foaming problems.
Inventors
- 👤 S Falkehag
- 👤 C Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:13
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0084; C09B67/0085; C09B67/0086
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
59 words
A DYESTUFF COMPOSITION COMPRISING A DISPERSE DYE CAKE AND FROM 1 PERCENT TO 75 PERCENT BY WEIGHT OF SAID DYE CAKE, OF THE DERIVATIVE OF A LIGNIN-BASED MATERIAL, SAID DERIVATIVE CONTAINING FROM 1 TO 20 MOLES PER 1,000 GRAMS OF A CARBOXYMETHYLATED LIGNIN AND MADE BY EACTING LIGNIN WITH A HALOGEN-CONTAINING METHANE CARBOXYLATE WHEREIN THE METHANE IS HALOGEN SUBSTITUTED.
Claim 2
Dependent Claim
59 words
A DYESTUFF COMPOSITION COMPRISING A DISPERSE DYE CAKE AND FROM 1 PERCENT TO 75 PERCENT BY WEIGHT OF SAID DYE CAKE, OF THE DERIVATIVE OF A LIGNIN-BASED MATERIAL, SAID DERIVATIVE CONTAINING FROM 1 TO 20 MOLES PER 1,000 GRAMS OF A CARBOXYMETHYLATED LIGNIN AND MADE BY EACTING LIGNIN WITH A HALOGEN-CONTAINING METHANE CARBOXYLATE WHEREIN THE METHANE IS HALOGEN SUBSTITUTED.
Claim 3
Dependent Claim
14 words
The dyestuff composition according to claim 1 wherein said lignin is an alkali lignin.
Claim 4
Dependent Claim
14 words
The dyestuff composition according to claim 1 wherein said lignin is a sulfonated lignin.
Claim 5
Dependent Claim
19 words
The composition according to claim 3 wherein said sulfonated lignin is based on a sulfite waste liquor lignin-containing product.
Claim 6
Dependent Claim
15 words
The composition according to claim 1 wherein said halogen-containing methane carboxylic acid is chloroacetic acid.
Claim 7
Dependent Claim
31 words
The composition according to claim 1 wherein said derivative comprises a lignin reacted with from 1 to 10 moles of said halogen-containing methane carboxylate per 1,000 grams of lignin starting material.
References Cited (Backward Citations)
US3578651A
Cited
US3763139A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |