Patent US5131918A successfully refreshed from Google Patents.
US5131918A
Expired / Lapsed
US
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Process for dyeing mixed anionic/cationic polyamide substrates with a specific type of vinyl sulfone dye
Assignee: Hoechst Celanese Chemical Co
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Filing: 1990-12-13
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Granted: 1992-07-21
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Expires: 2010-12-13
Abstract
Abstract The invention is a process for dyeing polyamide substrates comprising anionic and cationic fibers in multi-colored patterns. Cross-staining or dyeing of the cationic fibers by the anionic-dyeable nylon colorant is avoided. The anionic dyeable fiber portion is dyed with a fiber-reactive vinyl sulfone dye having one or more sulfonic acid substituents and one or more vinyl sulfone groups with the proviso that the sum of the number of sulfonic acid and vinyl sulfone substituents is at least three. The dyeing process is conducted at a pH of about 2 to about 4. Optionally the cationic portion of the substrate may be dyed with a basic dye in admixture with the vinyl sulfone dye.
Inventors
- 👤 Larry C. Kelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:23
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/248; D06P1/00; D06P1/38; D06P1/382; D06P1/384; Y; Y10; Y10S; Y10S8/00; Y10S8/02; Y10S8/92; Y10S8/924; Y10S8/929
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
124 words
A process for dyeing a polyamide substrate having contained therein anionic polyamide fibers and cationic polyamide fibers wherein said process comprises: (a) applying at least one vinyl sulfone dyes to said substrate in an amount effective to obtain the desired color; wherein said vinyl sulfone dye is applied to said substrate in an aqueous medium at a pH of about 2 to about 4; wherein said vinyl sulfone dye contains at least one sulfonic acid substituent or salt thereof and at least one fiber reactive vinyl sulfone substituent with the proviso that the sum of the number of fiber-reactive vinyl sulfone substituents and sulfonic acid substituents or salts thereof is at least three and (b) fixing said dye to the fibers of said substrate.
Claim 2
Dependent Claim
124 words
A process for dyeing a polyamide substrate having contained therein anionic polyamide fibers and cationic polyamide fibers wherein said process comprises: (a) applying at least one vinyl sulfone dyes to said substrate in an amount effective to obtain the desired color; wherein said vinyl sulfone dye is applied to said substrate in an aqueous medium at a pH of about 2 to about 4; wherein said vinyl sulfone dye contains at least one sulfonic acid substituent or salt thereof and at least one fiber reactive vinyl sulfone substituent with the proviso that the sum of the number of fiber-reactive vinyl sulfone substituents and sulfonic acid substituents or salts thereof is at least three and (b) fixing said dye to the fibers of said substrate.
Claim 3
Dependent Claim
148 words
A process for dyeing a polyamide substrate having contained therein anionic polyamide fibers and cationic polyamide fibers wherein said process comprises: (a) applying at least one vinyl sulfone dye to said substrate in an amount effective to obtain the desired color effect; wherein said vinyl sulfone dye is applied to said substrate in an aqueous medium at a pH of about 2 to about 4; wherein said vinyl sulfone dye contains at least one sulfonic acid substituent and at least one fiber reactive vinyl sulfone substituent and at least one fiber reactive substituent selected from mono-or-di-halo-s-triazine, mono-, di or tri-halopyrimidine, mono-cyanamido-s-triazine, mono and dichloroquinoxaline, a dichlorophthalazine, dichloropyridazone and the bromo or fluoro analogs thereof with the proviso that the sum of the number of fiber-reactive substituents and sulfonic acid substituents or salts thereof is at least three and (b) fixing said dye to the fibers of said substrate.
Claim 4
Dependent Claim
148 words
A process for dyeing a polyamide substrate having contained therein anionic polyamide fibers and cationic polyamide fibers wherein said process comprises: (a) applying at least one vinyl sulfone dye to said substrate in an amount effective to obtain the desired color effect; wherein said vinyl sulfone dye is applied to said substrate in an aqueous medium at a pH of about 2 to about 4; wherein said vinyl sulfone dye contains at least one sulfonic acid substituent and at least one fiber reactive vinyl sulfone substituent and at least one fiber reactive substituent selected from mono-or-di-halo-s-triazine, mono-, di or tri-halopyrimidine, mono-cyanamido-s-triazine, mono and dichloroquinoxaline, a dichlorophthalazine, dichloropyridazone and the bromo or fluoro analogs thereof with the proviso that the sum of the number of fiber-reactive substituents and sulfonic acid substituents or salts thereof is at least three and (b) fixing said dye to the fibers of said substrate.
Claim 5
Dependent Claim
17 words
A process according to claim 1 wherein one or more basic dyes are applied to said substrate.
Claim 6
Dependent Claim
19 words
A process according to claim 1 wherein said dyeing is conducted at pH of about 2.5 to about 3.5.
Claim 7
Dependent Claim
19 words
A process according to claim 1 wherein said anionic polyamide is selected from nylon, nylon 6-6 and mixtures thereof.
Claim 8
Dependent Claim
19 words
A process according to claim 5 wherein said polyamide substrate is in the form of a tufted nylon carper.
Claim 9
Dependent Claim
17 words
A process according to claim 2 wherein one or more basic dyes are applied to said substrate.
Claim 10
Dependent Claim
20 words
A process according to claim 2 wherein said dyeing is conducted at a pH of about 2.5 to about 3.5.
Claim 11
Dependent Claim
20 words
A process according to claim 2 wherein said anionic polyamide is selected from nylon 6, nylon 6-6 and mixtures thereof.
Claim 12
Dependent Claim
20 words
A process according to claim 9 wherein said anionic polyamide substrate is in the form of a tufted nylon carpet.
Claim 13
Dependent Claim
12 words
A polyamide substrate dyed in accordance with the process of claim 1.
Claim 14
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 2.
Claim 15
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 3.
Claim 16
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 4.
Claim 17
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 5.
Claim 18
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 6.
Claim 19
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 7.
Claim 20
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 8.
Claim 21
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 9.
Claim 22
Dependent Claim
9 words
A polyamide substrate dyed in accordance with claim 10.
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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) | 1995-07-21 | 1996-01-20 | 1996-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-07-21 | 2000-01-20 | 2000-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-07-21 | 2004-01-20 | 2004-07-21 | $7700.00 | Window Closed / Lapsed |