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US3713768A Expired / Lapsed US ⏱️ 0.0 years remaining

Long chain alkane or alkene amido benzene sulfonate assisted dyeing of synthetic linear polyamides

Assignee: Novartis AG
•
Filing: 1970-11-12
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Granted: 1973-01-30
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Expires: 1990-11-12
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Abstract

Abstract A process for the even, non-streaky dyeing of fiber material made from synthetic polyamide of differing dyestuff-affinity, such as textured polyamide fiber material, is disclosed, which comprises pre-treating said fiber material, at a pH-value of from 2 to 7 and at temperatures of from 30 to 100* C, with a liquor containing, as essential component, an alkane- or alkene-amidobenzene-sulphonic acid salt having from 10 to 19 carbon atoms in the alkane- or alkene-amido radical, as anion-active auxiliary, such as the sodium or ammonium salts of 1-octadecanamido-benzene3-sulphonic acid, 1-octadec-9-enamido-benzene-3-sulphonic acid and especially 1-octadec-9-enamido-benzene-3-ammonium sulphonate, thereafter adding the solution of at least one anionic dyestuff at temperatures of from 40 to 100* C and completing the dyeing at temperatures of from 95 to 140* C. By this process, even on synthetic polyamide fiber material tending to exhibit streakiness upon dyeing and with poorly levelling dyestuffs, even and nonstreaky dyeings are obtained with a single anion-active auxiliary, said auxiliary being moreover suitable for the levelling of streaky and uneven dyeings by means of an aftertreatment.

Inventors

  • 👤 H Wegmuller
  • 👤 K Keller

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 16:59
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/62; D06P1/628; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/241

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 131 words
A process for the even, non-streaky dyeing of linear synthetic polyamide fiber material which comprises I. applying to said fiber material before dyeing, at a pH-value of from 2 to 7 and at temperatures of from 30 to 100* C, with a liquor containing, as essential component, an anion-active Auxiliary of the formula wherein R represents an aliphatic hydrocarbon radical having from 10 to 19 carbon atoms, R'' represents hydrogen, an alkyl group having from 1 to 4 carbon atoms, an alkoxy group having from 1 to 4 carbon atoms or a halogen atom, and M represents a monovalent cation, and II. adding the solution of at least one anionic dyestuff at temperatures of from 40 to 100* C and completing the dyeing at temperatures of from 95 to 140* C.
Claim 2
Dependent Claim 131 words
A process for the even, non-streaky dyeing of linear synthetic polyamide fiber material which comprises I. applying to said fiber material before dyeing, at a pH-value of from 2 to 7 and at temperatures of from 30 to 100* C, with a liquor containing, as essential component, an anion-active Auxiliary of the formula wherein R represents an aliphatic hydrocarbon radical having from 10 to 19 carbon atoms, R'' represents hydrogen, an alkyl group having from 1 to 4 carbon atoms, an alkoxy group having from 1 to 4 carbon atoms or a halogen atom, and M represents a monovalent cation, and II. adding the solution of at least one anionic dyestuff at temperatures of from 40 to 100* C and completing the dyeing at temperatures of from 95 to 140* C.
Claim 3
Dependent Claim 36 words
A process as defined in claim 1, employing a liquor containing a compound of the formula wherein R represents an aliphatic hydrocarbon radical having 17 carbon atoms, and M represents a monovalent cation, as anion-active auxiliary.
Claim 4
Dependent Claim 19 words
A process as defined in claim 1, employing a liquor containing the compound of the Formula as anion-active auxiliary.
Claim 5
Dependent Claim 27 words
A process as defined in claim 1, employing a liquor containing from 1 to 3 per cent by weight of anion-active auxiliary, referred to the fiber material.
Claim 6
Dependent Claim 28 words
A process as defined in claim 1, wherein a solution of at least one non-metalized acid wool dyestuff having one sulphonic acid group, as anionic dyestuff is added.

References Cited (Backward Citations)

US2310074A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-01-30 1976-07-31 1977-01-30 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-01-30 1980-07-31 1981-01-30 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-01-30 1984-07-31 1985-01-30 $7700.00 Window Closed / Lapsed

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