US3849162A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preventing the staining of polyamide fibre material treated with fluorescent whiteners
Assignee: Novartis AG
•
Filing: 1972-05-30
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Granted: 1974-11-19
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Expires: 1992-05-30
Abstract
Abstract Polyamide fibre material treated with fluorescent whiteners (also known as optical brighteners) is prevented from being stained by applying to the fibre material either simultaneously with the fluorescent whitener or in the form of an aftertreatment of the whitened fibre material, an emulsion containing a watersoluble fixing agent with affinity to fibres, an organic solvent or solvent mixture and at most 10 % of water, relative to the preparation, and optionally an organo-soluble dispersing agent. The process is carried out at 20* to 120*C according to the exhaustion method. The finish renders the fibrous material resistant to staining and soiling.
Inventors
- 👤 M Harris
- 👤 V Mueller
- 👤 H Berendt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:59
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/928; D06L; D06L4/00; D06L4/60; D06L4/679; D06P1/44; D06P1/62; D06P1/621; D06P1/622; D06P1/625; D06P1/922
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
102 words
A PROCESS FOR PREVENTING THE STAINING OF OPTICALLYBRIGHTENED SYNTHETIC POLYAMIDE FIBER MATERIAL, WHICH COMPRISES THE STEP OF APPLYING TO THE FIBER MATERIAL AT A TEMPERATURE OF 20* TO 120*C (A) SIMULTANEOUSLY WITH AN OPTICAL BRIGHTENER IN ORGANIC SOLVENT OR 8B) AS AN AFTER-TREATMENT O OPTICALLY BRIGHTENED FIBER MATERIAL, A PREPARATION WHICH CONTAINS A WATER-SOLUBLE FIXING AGENT WITH AFFINITY FOR THE POLYAMIDE FIBERS, AN ORGANIC SOLVENT, AND 0 TO 10 PERCENT OF WATER, WHEREIN THE FIXING AGENT IS A POLYCONDENSATION PRODUCT OF FORMALDEHYDE WITH AN ARYL SULPHONIC ACID OR A DIARYLSULPHONE, AND WHEREIN THE OPTICAL BRIGHTENEING AGENT CONTAINS AT LEAST ONE WATER-SOLUBILIZING AGENT.
Claim 2
Dependent Claim
102 words
A PROCESS FOR PREVENTING THE STAINING OF OPTICALLYBRIGHTENED SYNTHETIC POLYAMIDE FIBER MATERIAL, WHICH COMPRISES THE STEP OF APPLYING TO THE FIBER MATERIAL AT A TEMPERATURE OF 20* TO 120*C (A) SIMULTANEOUSLY WITH AN OPTICAL BRIGHTENER IN ORGANIC SOLVENT OR 8B) AS AN AFTER-TREATMENT O OPTICALLY BRIGHTENED FIBER MATERIAL, A PREPARATION WHICH CONTAINS A WATER-SOLUBLE FIXING AGENT WITH AFFINITY FOR THE POLYAMIDE FIBERS, AN ORGANIC SOLVENT, AND 0 TO 10 PERCENT OF WATER, WHEREIN THE FIXING AGENT IS A POLYCONDENSATION PRODUCT OF FORMALDEHYDE WITH AN ARYL SULPHONIC ACID OR A DIARYLSULPHONE, AND WHEREIN THE OPTICAL BRIGHTENEING AGENT CONTAINS AT LEAST ONE WATER-SOLUBILIZING AGENT.
Claim 3
Dependent Claim
22 words
A process according to claim 1, wherein the fixing agent is applied simultaneously with the optical brightening agent in a solvent liquor.
Claim 4
Dependent Claim
27 words
A process according to claim 1, wherein fibre material treated with an optical brightening agent in solvent liquors is subjected to an aftertreatment with the fixing agent.
Claim 5
Dependent Claim
37 words
A process according to claim 1, wherein fibre material treated with an optical brightening agent in aqueous lIquors is subjected to an aftertreatment with the fixing agent after an intermediate drying of the material has been effected.
Claim 6
Dependent Claim
47 words
A process according to claim 1, wherein the optical brightening agent is selected from the group consisting of mono-or disulphonic acids, their amides or carboxylic acids of 4,4''-bis-(acylamino)-stilbenes, 4,4''-bis-(triazinylamino)-stilbenes, 4,4''-bis-(azoyl)-stilbenes, stilbylnaphthotriazoles, bis-(benzoxazol-2-yl)-derivatives, monomethine cyanines, 2,7-bis-(aroylamino)-dibenzothiophene dioxides, 1,3-diarylpyrazolines, styrylbenzoxazoles, bis-styrylaryl compounds, bis-benzoxazolylarylene compounds oxidiazole compounds or quaternary benzofuranylbenzimidazoles.
Claim 7
Dependent Claim
15 words
A process according to claim 1, wherein the preparation additionally contains an organo-soluble dispersing agent.
Claim 8
Dependent Claim
22 words
A process according to claim 1, wherein the fixing agent is a water-soluble anionic polycondensation product of a sulphonated diarylsulphone with formaldehyde.
Claim 9
Dependent Claim
22 words
A process according to claim 7, wherein the fixing agent is a condensation product of formaldehyde with sulphonated dihydroxy-diphenylsulphones and naphthalenesulphonic acids.
Claim 10
Dependent Claim
27 words
A process according to claim 7, wherein the fixing agent is a condensation product of a diarylsulphone which contains at least one phenolic hydroxyl group with formaldehyde.
Claim 11
Dependent Claim
12 words
A process according to claim 9, wherein the diarylsulphone is a dihydroxydiphenylsulphone.
Claim 12
Dependent Claim
14 words
A process according to claim 1, wherein the organic solvent is immiscible with water.
Claim 13
Dependent Claim
32 words
A process according to claim 11, wherein the organic solvent is petroleum hydrocarbons, benzene and halogenated benzenes or benzenes which are substitued by lower alkyl groups, alicyclic compounds or halogenated aliphatic hydrocarbons.
Claim 14
Dependent Claim
16 words
A process according to claim 12, wherein the halogenated aliphatic hydrocarbons are 1,1,1-trichloroethane, trichloroethylene or perchloroethylene.
References Cited (Backward Citations)
CH3710A
Cited
CH7796A
Cited
CH12362A
Cited
GB715919A
Cited
US3682900A
Cited
US3265461A
Cited
GB929053A
Cited
CH432485A
Cited
US3182059A
Cited
US3290111A
Cited
US3371089A
Cited
US3642783A
Cited
FR1535352A
Cited
US3485761A
Cited
US3490860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |