US2554881A - Process for printing superpolyamide - Google Patents
Process for printing superpolyamide Download PDFInfo
- Publication number
- US2554881A US2554881A US2554881DA US2554881A US 2554881 A US2554881 A US 2554881A US 2554881D A US2554881D A US 2554881DA US 2554881 A US2554881 A US 2554881A
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- US
- United States
- Prior art keywords
- printing
- leuco
- fibers
- salt
- vat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000000034 method Methods 0.000 title description 26
- 239000011780 sodium chloride Substances 0.000 claims description 62
- 239000000835 fiber Substances 0.000 claims description 42
- 239000007800 oxidant agent Substances 0.000 claims description 34
- 239000002253 acid Substances 0.000 claims description 26
- 239000000975 dye Substances 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- 150000003839 salts Chemical class 0.000 claims description 10
- HWTDMFJYBAURQR-UHFFFAOYSA-N 80-82-0 Chemical compound OS(=O)(=O)C1=CC=CC=C1[N+]([O-])=O HWTDMFJYBAURQR-UHFFFAOYSA-N 0.000 claims description 6
- 238000010025 steaming Methods 0.000 description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical class OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 16
- 238000002360 preparation method Methods 0.000 description 16
- 159000000000 sodium salts Chemical class 0.000 description 16
- SOIFLUNRINLCBN-UHFFFAOYSA-N Ammonium thiocyanate Chemical compound [NH4+].[S-]C#N SOIFLUNRINLCBN-UHFFFAOYSA-N 0.000 description 12
- 239000004677 Nylon Substances 0.000 description 12
- 229920001778 nylon Polymers 0.000 description 12
- LPXPTNMVRIOKMN-UHFFFAOYSA-M Sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 description 8
- 229920001615 Tragacanth Polymers 0.000 description 8
- 150000003863 ammonium salts Chemical class 0.000 description 8
- -1 ester salt Chemical class 0.000 description 8
- 150000002828 nitro derivatives Chemical class 0.000 description 8
- 239000000196 tragacanth Substances 0.000 description 8
- XTEGARKTQYYJKE-UHFFFAOYSA-M chlorate Chemical class [O-]Cl(=O)=O XTEGARKTQYYJKE-UHFFFAOYSA-M 0.000 description 6
- 238000004043 dyeing Methods 0.000 description 6
- 239000004744 fabric Substances 0.000 description 6
- 230000001590 oxidative Effects 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 229920002955 Art silk Polymers 0.000 description 4
- 241000416162 Astragalus gummifer Species 0.000 description 4
- 229920002301 Cellulose acetate Polymers 0.000 description 4
- 229940116362 Tragacanth Drugs 0.000 description 4
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- IOVCWXUNBOPUCH-UHFFFAOYSA-M nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 4
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Substances [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 4
- KEAYESYHFKHZAL-UHFFFAOYSA-N sodium Chemical compound [Na] KEAYESYHFKHZAL-UHFFFAOYSA-N 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 235000010288 sodium nitrite Nutrition 0.000 description 4
- 125000001424 substituent group Chemical group 0.000 description 4
- 150000004763 sulfides Chemical class 0.000 description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N sulfonic acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 4
- 239000002562 thickening agent Substances 0.000 description 4
- 235000010487 tragacanth Nutrition 0.000 description 4
- KHPLPBHMTCTCHA-UHFFFAOYSA-N Ammonium chlorate Chemical compound N.OCl(=O)=O KHPLPBHMTCTCHA-UHFFFAOYSA-N 0.000 description 2
- DVARTQFDIMZBAA-UHFFFAOYSA-O Ammonium nitrate Chemical compound [NH4+].[O-][N+]([O-])=O DVARTQFDIMZBAA-UHFFFAOYSA-O 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N Ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- UXJVWJGDHIZPLD-UHFFFAOYSA-O Ammonium vanadate Chemical compound [NH4+].O=[V-](=O)=O UXJVWJGDHIZPLD-UHFFFAOYSA-O 0.000 description 2
- YAGKRVSRTSUGEY-UHFFFAOYSA-N Ferricyanide Chemical compound [Fe+3].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-].N#[C-] YAGKRVSRTSUGEY-UHFFFAOYSA-N 0.000 description 2
- 229920000715 Mucilage Polymers 0.000 description 2
- YZHUMGUJCQRKBT-UHFFFAOYSA-M Sodium chlorate Chemical compound [Na+].[O-]Cl(=O)=O YZHUMGUJCQRKBT-UHFFFAOYSA-M 0.000 description 2
- VWDWKYIASSYTQR-UHFFFAOYSA-N Sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 2
- 229920002472 Starch Polymers 0.000 description 2
- NNBFNNNWANBMTI-UHFFFAOYSA-M [4-[[4-(diethylamino)phenyl]-phenylmethylidene]cyclohexa-2,5-dien-1-ylidene]-diethylazanium;hydrogen sulfate Chemical compound OS([O-])(=O)=O.C1=CC(N(CC)CC)=CC=C1C(C=1C=CC=CC=1)=C1C=CC(=[N+](CC)CC)C=C1 NNBFNNNWANBMTI-UHFFFAOYSA-M 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 150000001447 alkali salts Chemical class 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 150000004056 anthraquinones Chemical class 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 229960001506 brilliant green Drugs 0.000 description 2
- 125000002843 carboxylic acid group Chemical group 0.000 description 2
- 150000001734 carboxylic acid salts Chemical class 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 238000009990 desizing Methods 0.000 description 2
- 150000004985 diamines Chemical class 0.000 description 2
- 150000001991 dicarboxylic acids Chemical class 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- ORXDSIPBTFAEKJ-UHFFFAOYSA-N ferrocyanide Chemical compound N#C[Fe-4](C#N)(C#N)(C#N)(C#N)C#N ORXDSIPBTFAEKJ-UHFFFAOYSA-N 0.000 description 2
- 239000002657 fibrous material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 150000002823 nitrates Chemical class 0.000 description 2
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000006068 polycondensation reaction Methods 0.000 description 2
- 239000008107 starch Substances 0.000 description 2
- 235000019698 starch Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 125000000542 sulfonic acid group Chemical group 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 239000004753 textile Substances 0.000 description 2
Classifications
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/38—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using reactive dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/62—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds with sulfate, sulfonate, sulfenic or sulfinic groups
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
- D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
- D06P1/673—Inorganic compounds
- D06P1/67333—Salts or hydroxides
- D06P1/6735—Salts or hydroxides of alkaline or alkaline-earth metals with anions different from those provided for in D06P1/67341
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/02—Material containing basic nitrogen
- D06P3/04—Material containing basic nitrogen containing amide groups
- D06P3/24—Polyamides; Polyurethanes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/58—Material containing hydroxyl groups
- D06P3/60—Natural or regenerated cellulose
- D06P3/66—Natural or regenerated cellulose using reactive dyes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/001—Special chemical aspects of printing textile materials
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
- D06P5/30—Ink jet printing
Definitions
- the present invention is based on the observation that superpolyamide fibers can be printed in an advantageous manner by the use of leuco-ester salts of vat dyestufi's.
- vat dyestuffs there may be used, more especially, the generally known alkali salts of sulfuric acid leucoesters of vat dyestufis. They, may be derived from vat dyestuffs of the indigoid, mixed indolethioindigoid or pure thioindigoid series, or from vat dyestuffs of the anthraquinone series. products may be used directly in the process of the invention.
- the printing process is advantageously carried out by printing the goods with a printing preparation containing, in addition to the ester salt, a customary thickening agent and certain added substances, then drying the printed goods and steaming them in the normal manner. After steaming, the color is in some cases fully de- The commercial- In Switzerland February 21,
- an improvement in the fixation and/or development of the dye can be obtained by an-aftertreatment with an acid oxidizing agent, for example, in a bath containing sulfuric acid and sodium nitrite.
- the printing preparations used in the present process may contain as a thickening agent, for example, an ordinary starch-tragacanth thickening, in which" the relative proportions of the tragacanth mucilage and starch paste may vary within the usual limits according to requirements. These thickenings may also contain other additions.
- Printing preparations which are designed to form a vat dyestuff from a leuco-ester salt of a vat dyestuff during steaming" without any oxidizing after-treatment, normally contain an agent capable of liberating acid, which agent produces the acid reaction necessary for oxidation only under the conditions of steaming, and also an oxidizing agent which is capable of oxidizing the leuco-compound to the vat dyestuif under the same conditions.
- agents capable of liberating acid there come into consideration for the present process more especially, ammonium salts of relatively strong acids, particularly ammonium sulfate and advantageously ammonium thiccyanate.
- oxidizing agents there may be used in the present process chlorates, for example, sodium or ammonium chlorate, and also nitrates and similar known oxidizing compounds.
- nitro-compounds which are soluble in aqueous printing preparations. This is the case especially with organic nitro-compounds which contain in an aromatic nucleus, in addition to one or more nitro groups, at least one group imparting solubility, for example, a carboxylic acid or sulfonic acid group. In many cases it has proved to be of advantage'to use the easily accessible metanitrobenzene sulfonic acid.
- Such nitro-compounds are advantageously incorporated in the printing preparation "in the form of their water-soluble salts, for example, their sodium salts.
- the prints and dyeings obtainable by the invention possess good properties of fastness and can be produced in a simple manner.
- Example 1 A nylon fabric, which has not been pretreated, or which has been slightly washed, is printed with a printing preparation of the following composition:
- Example 2 A nylon fabric, which has been lightly cleansed, is printed with the following printing preparation:
- Example 3 throne (green) 10 fl:B-dihydroxydiethyl sulfide 20 Tragacanth thickening 200 Ammonium thiocyanate solution 1:1 Sodium meta-nitrobenzenesulfonate 10 Water 660 The fabric is dried and finished as indicated in Example 2. Even dyeings in the shades indicated under (a), (b), and (0) above are obtained.
- a blotch roller may be used instead of the foulard.
- a printing paste suitable for printing superpolyamide fibers with a leuco-ester salt of a vat dyestufi which contains the said leuco-ester salt, an ammonium salt of a strong acid, and, as sole oxidizing agent, an alkali metal salt of meta-nitrobenzene sulfonic acid.
- a printing paste suitable for printing superpolyamide fibers with a leuco-ester salt of a vat dyestufi which contains the said leuco-ester salt, ammonium thiocyanate, and, as sole oxidizing agent, the sodium salt of meta-nitrobenzene sulfonic acid.
- a printing paste suitable for printing su perpolyamide fibers with a leuco-ester salt of a vat dyestufi which contains the said leuco-ester salt, ammonium thiocyanate, and, as sole oxidizing agent, the sodium salt of meta-nitrobenzene sulfonic acid.
Description
Patented May 29, 1951 "Princess Foit PRINTING snPERPoLyAMinE FIBERS WITH Latino-ESTER SALTS F VAT DYESTUFFS Fritz Reichartpliasel, and Karl Schlumpf, eu- Allschwil, Switzerland, assignors to Giba'Limited, Basel, Switzerland, a Swiss firm No Drawing. Application February 17, 1948, se-
rial No. 9,028. 1947 8 Claims.
It is known that the so-called fully synthetic fibers which may consist, for example, of superpolyamides or superpolyurethanes, and especially the textile fibersknown widely in commerce under the same nylon, possess dyeing properties different from those of any previously known fibrous materials. Although there is indeed a certain analogy between cellulose acetate artificial silk and nylon inasmuch as cellulose acetate artificial silk dyestuffs can generally be used for dyeing and printing nylon, there is great difficulty in dyeing and printing nylon with other classes of dyestuffs. Attempts to explain these differences systematically have not hitherto been successful.
The present invention is based on the observation that superpolyamide fibers can be printed in an advantageous manner by the use of leuco-ester salts of vat dyestufi's.
As superpolyamide fibers to be printed in accordance with this invention there come into consideration the known polycondensation products of dicarboxylic acids with diamines or the autocondensates of amino-w-carboxylic acids. The fibers can be subjected to the process of the invention in any desired state of manufacture, but especially in the form of woven or knitted goods. An advantage of the invention is that no special pretreatment of the goods to be printed is necessary. However, in some cases a certain cleansing treatment,.for example, desizing, defatting or like treatment, may be of advantage.
As leuco-ester salts of vat dyestuffs there may be used, more especially, the generally known alkali salts of sulfuric acid leucoesters of vat dyestufis. They, may be derived from vat dyestuffs of the indigoid, mixed indolethioindigoid or pure thioindigoid series, or from vat dyestuffs of the anthraquinone series. products may be used directly in the process of the invention.
The printing process is advantageously carried out by printing the goods with a printing preparation containing, in addition to the ester salt, a customary thickening agent and certain added substances, then drying the printed goods and steaming them in the normal manner. After steaming, the color is in some cases fully de- The commercial- In Switzerland February 21,
with a soaping operation. In some cases, especially when the steaming is of short duration, an improvement in the fixation and/or development of the dye can be obtained by an-aftertreatment with an acid oxidizing agent, for example, in a bath containing sulfuric acid and sodium nitrite.
The printing preparations used in the present process may contain as a thickening agent, for example, an ordinary starch-tragacanth thickening, in which" the relative proportions of the tragacanth mucilage and starch paste may vary within the usual limits according to requirements. These thickenings mayalso contain other additions.
Printing preparations, which are designed to form a vat dyestuff from a leuco-ester salt of a vat dyestuff during steaming" without any oxidizing after-treatment, normally contain an agent capable of liberating acid, which agent produces the acid reaction necessary for oxidation only under the conditions of steaming, and also an oxidizing agent which is capable of oxidizing the leuco-compound to the vat dyestuif under the same conditions. As agents capable of liberating acid there come into consideration for the present process more especially, ammonium salts of relatively strong acids, particularly ammonium sulfate and advantageously ammonium thiccyanate. As oxidizing agents there may be used in the present process chlorates, for example, sodium or ammonium chlorate, and also nitrates and similar known oxidizing compounds.
Especially good results are obtained b'y'the present process by using organic nitro-compounds instead of or in addition to the usual oxidizing agents. It is of advantage to use nitro-compounds which are soluble in aqueous printing preparations. This is the case especially with organic nitro-compounds which contain in an aromatic nucleus, in addition to one or more nitro groups, at least one group imparting solubility, for example, a carboxylic acid or sulfonic acid group. In many cases it has proved to be of advantage'to use the easily accessible metanitrobenzene sulfonic acid. Such nitro-compounds are advantageously incorporated in the printing preparation "in the form of their water-soluble salts, for example, their sodium salts.
It is surprisin that the "en fir mm. a.
compounds renders unnecessary the addition of the otherwise usual catalysts, such as ammonium vanadate or a ferricyanide or ferrocyanide, and this represents a further simplification of the process and leads to greater stability of the printing preparations. Instead of localized prints, uniform dyeings can be produced by padding or foularding onto the goods, as a normal printing paste, a paste which is suitably somewhat less thickened, and proceeding in the usual manner in all other respects.
The prints and dyeings obtainable by the invention possess good properties of fastness and can be produced in a simple manner.
The following examples illustrate the invention, the parts being by weight:
Example 1 A nylon fabric, which has not been pretreated, or which has been slightly washed, is printed with a printing preparation of the following composition:
Parts The sodium salt of the sulfuric acid ester of The printed material is then dried in the usual manner, and steamed for hour in a star frame steamer under slightly superatmospheric pressure (about 1 /4 atmospheres). The goods are then rinsed, soaped at the boil, and again rinsed hot and then cold. The following tints are obtained depending on the vat dyestufi from which the ester salt is derived:
(1) 4 :4=-dimethyl-6 :6 -dichloro -thioindigo pink (2) 4 :7 -dimethyl-6 6' -dichloro-thioindigo pink (3) Dichloroisodibenzanthrone violet (4) 4 5-benzo-5-methyl-6' -chlorothioindigo bordeaux Steaming can be extended to one hour or shortened, for example, by carrying it out in a Mather-Flatt ager. The latter treatment is appropriately followed by the acid nitrite treatment described in Example 2.
Example 2 A nylon fabric, which has been lightly cleansed, is printed with the following printing preparation:
Parts The sodium salt of the sulfuric acid ester of leuco-dimethoxy-dibenzanthrone 80 fl:/3-dihydr0xydiethyl sulfide 40 Water 2'70 Starch-tragacanth thickening 500 Ammonium thiocyanate solution 1:1 100 Sodium meta-nitrobenzene sulfonate The printed material is dried and steamed for 30 minutes in a star frame steamer, then rinsed and after-treated at 60-70" C. in an acid nitrite bath containing, per liter of water, 2 grams of sodium nitrite and 36 grams of sulfuric acid of 94 per cent. strength. There is obtained a brilliant green print.
Example 3 throne (green) 10 fl:B-dihydroxydiethyl sulfide 20 Tragacanth thickening 200 Ammonium thiocyanate solution 1:1 Sodium meta-nitrobenzenesulfonate 10 Water 660 The fabric is dried and finished as indicated in Example 2. Even dyeings in the shades indicated under (a), (b), and (0) above are obtained.
A blotch roller may be used instead of the foulard.
It is to be understood that the art of printing is still highly empirical and according to the particular brand of fibers to be printed, the steaming and printing apparatus available, etc., alterations in the recipes can be made without departing from the spirit of the invention. Thus, for example, other oxidizing agents can be added, such as sodium or ammonium nitrate or chlorate, the sodium salt of meta-nitrobenzene sulfonic acid may in part or wholly be replaced by other salts, including the ammonium salt. While the meta-nitrobenzene sulfonates have been chosen in view of their low cost, isomers thereof or the corresponding carboxylic acid salts may be used.
Having thus described the invention, What is claimed is:
1. In a process for printing superpolyamide fibers with a leuco-ester salt of a vat dyestuii, the steps of printing the said fibers with a printing paste which contains the said leuco-ester salt, an agent which liberates acid in the heat, and, as sole oxidizing agent, a water-soluble salt of a nitrobenzene sulfonic acid free from other substituents.
2. In a process for printing superpolyamide fibers with a leuco-ester salt of a vat dyestuff, the steps of printing the said fibers with a printing paste which contains the said leuco-ester salt, an ammonium salt of a strong acid, and, as sole oxidizing agent, an alkali metal salt of metanitrobenzene sulfonic acid, and steaming the printed fibers whereby the dyestuff is fixed and the greater part thereof is simultaneously developed Without addition of any other oxidizing agent.
3. In a process for printing superpolyamide fibers with a leuco-ester salt of a vat dyestuff, the steps of printing the said fibers with a printing paste which contains the said leuco-ester salt, ammonium thiocyanate, and, as sole oxidizing agent, the sodium salt of meta-nitrobenzene sulionic acid, and steaming the printed fibers whereby the dyestufi is fixed and the greater part thereof is simultaneously developed without addition of any other oxidizing agent.
4. In a process for printing superpolyamide fibers with a leuco-ester salt of a vat dyestuif, the
steps of printing the said fibers with a printing paste which contains the said leuco-ester salt, ammonium thiocyanate, and, as sole oxidizing agent, the sodium salt of meta-nitrobenzene sulfonic acid, and steaming the printed fibers whereby the dyestuff is fixed and the greater part thereof is simultaneously developed without addition of any other oxidizing agent.
5. A printing paste suitable for printing superpolyamide fibers with a leuco-ester salt of a vat dyestuff, which contains the said leuco-ester salt,
} an agent which liberates acid in the heat, and, as
sole oxidizing agent, a water-soluble salt of a nitrobenzene sulfonic acid free from other substituents.
6. A printing paste suitable for printing superpolyamide fibers with a leuco-ester salt of a vat dyestufi, which contains the said leuco-ester salt, an ammonium salt of a strong acid, and, as sole oxidizing agent, an alkali metal salt of meta-nitrobenzene sulfonic acid.
7. A printing paste suitable for printing superpolyamide fibers with a leuco-ester salt of a vat dyestufi, which contains the said leuco-ester salt, ammonium thiocyanate, and, as sole oxidizing agent, the sodium salt of meta-nitrobenzene sulfonic acid.
8. A printing paste suitable for printing su perpolyamide fibers with a leuco-ester salt of a vat dyestufi, which contains the said leuco-ester salt, ammonium thiocyanate, and, as sole oxidizing agent, the sodium salt of meta-nitrobenzene sulfonic acid.
FRITZ REICHART.
Claims (1)
- 5. A PRINTING PASTE SUITABLE FOR PRINTING SUPERPOLYAMIDE FIBERS WITH A LEUCO-ESTER SALT OF A VAT DYESTUFF, WHICH CONTAINS THE SAID LEUCO-ESTER SALT, AN AGENT WHICH LIBERATES ACID IN THE HEAT, AND, AS SOLE OXIDIZING AGENT, A WATER-SOLUBLE SALT OF A NITROBENZENE SULFONIC ACID FREE FROM OTHER SUBSTITUENTS.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2554881A true US2554881A (en) | 1951-05-29 |
Family
ID=3437956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US2554881D Expired - Lifetime US2554881A (en) | Process for printing superpolyamide |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2554881A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5337976A (en) * | 1992-03-31 | 1994-08-16 | Messier-Bugatti | Raisable landing gear for heavier-than-air aircraft, in particular for helicopters |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB321191A (en) * | 1928-04-26 | 1929-10-28 | James Morton | Improvements in dyeing and printing |
| US2145193A (en) * | 1933-05-26 | 1939-01-24 | Nat Aniline & Chem Co Inc | Vat dye composition |
| US2406586A (en) * | 1943-08-13 | 1946-08-27 | Allied Chem & Dye Corp | Dyestuff composition |
-
0
- US US2554881D patent/US2554881A/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB321191A (en) * | 1928-04-26 | 1929-10-28 | James Morton | Improvements in dyeing and printing |
| US2145193A (en) * | 1933-05-26 | 1939-01-24 | Nat Aniline & Chem Co Inc | Vat dye composition |
| US2406586A (en) * | 1943-08-13 | 1946-08-27 | Allied Chem & Dye Corp | Dyestuff composition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5337976A (en) * | 1992-03-31 | 1994-08-16 | Messier-Bugatti | Raisable landing gear for heavier-than-air aircraft, in particular for helicopters |
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