Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
  • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
  • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
  • D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives

Definitions

• the fiber be wet: ted
• Monopol-soap is a name sometimes applied to the sodium salt of ricinoleic acid.
• These additions are objectionable for various reasons, the additions having a low efliciency and being uneconomical.
• most of thesaid ingredients are not appropriate for dyeing wool in acetic or sulphuric acid baths, because in caseof organic bases, inactive salts are formed, and in case of soaps, Turkey-red oils, and the like, decompositions take place with the production of fatty acids which are insoluble in water. Also in case of oils which are stable in acids the dispersing property is reduced, so that the favorable action is largely lost.
• the solutions of the said compounds are suitable for forming the dye-stuff into a paste, and they improve the dispersion of the dye-stuff, and thereby they prevent too rapid. and non-uniform absorption of the dye-stuff they improve the tints and the rubbing property, and they prevent the formation of bronze.
• the property of improving the suspension and emulsion is particularly important when dyeing matter containing oily impurities, which by reason of the said impurities are not easily uniformly dyed. For example, oily cotton obtained as a waste roduct from spinning mills and weaving actories, or carpet yarns containing residues of oils which cannot be saponified can be uniformly dyed without having the residue of the fat removed.
• the aliphatically substituted aromatic sulpho acids or the salts thereof are distinguished from the known subsidiary ingredients used in dyeing, in that they may be universally used and that they have the aforesaid technical advantages.
• the inorganic mordants such as potassium-bichromate, chromium-fluoride,
• alum, copper-sulphate, iron-sulphate, chloride of tin, etc, may be completely or in part substituted in mordant dyeing by the
• the moistcning and permeating action of i the said sulpho-acids and their salts can be further improved by adding thereto alcohols of one and higher valencies and soluble in water, such as methyl-alcohol, ethyl-alcohol, isopropyl-alcohol, mayl-alcohol, glycol-glycerine.
• the said sulphonic-acids may be added to the aforesaid bath heretofore used preparatory to bleaching.
• Example 1 bleaching of piece go0tls.-100 kilogrammes of nettle fabric are bleached from 3 to 4 hours in a bleaching jigger by means of 500 liters of a chloride of lime bleaching'liquor of 0.7 B. (1 Twaddell) containing 0.4 gramme of sodium salt of isobutyl naphthalene sulphonic acid per liter, whereupon it is further treated in the usual way.
• Example 2 dyeing 100 kilogrammes 0 f cotton g am.-Five kilogrammes of powdered indigo and kilogramme of potassium salt of cyclo-hexyl-naphthalene sulphonic acid are formed with three liters of water into a homogeneous paste, and the said paste is brought into a bath of about 3000 liters of water, 2.5 liters of soda solution of 30 B. (52.13 Twaddell and 1.8 kilogrammes of anhydrous sodium-hydro-sulfite at a'temperature of 40 C. (104 F.). Thereafter dyeing is carried on in the usual way.
• Example 3 dyeing of 100 kilogram/mes of wool felt (hat felt).-1 kilogram of a suitable acid dye-stuif is formed into a paste with a solution of 0.8 kilogramme of isopropyl-naphthalene-sulphonic-acid and two liters of water, which paste is gradually added to the dyers bath of about 3000 liters together with two kilogrammes of concentrated sulphuric acid and 8 kilogrammes of calcined Glauber salt.
• the felt material is dyed in the usual way at boiling temperature to extraction of the bath.
• raw fibrous material is meant a material which contains the natural constituents of the fiber such as starches, gums, pectins and the like, and also contains contaminating material such as machine oil, grease and the like.
• the process of bleaching raw fibrous material which comprises introducing the raw fibrous material into a cold bath containing an alkali metal compound yielding hydroxyl ions in aqueous solution and then introducing the fibrous material into a cold bleaching liquor containing a salt of an aliphatically substituted aromatic sulphonic acid and an unstable chlorine compound and then completing the bleaching process in known manner.
• the process of bleaching raw fibrous material which comprises introducing the said raw fibrous material into a cold bath containing an alkali metal compound yield- I ing hydroxyl ions in aqueous solution and then introducing the fibrous material into a cold bleaching liquor containing a salt of an alkyl substituted naphthalene sulphonic acid and bleaching powder and completing the bleaching process in known manner.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Coloring (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Detergent Compositions (AREA)
• Paper (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=5934637

Family Applications (1)

Country Status (3)

Cited By (4)

Families Citing this family (2)

• 0
  • BE BE331503D patent/BE331503A/xx unknown
• 1926
  • 1926-01-14 US US81311A patent/US1881745A/en not_active Expired - Lifetime
  • 1926-01-14 GB GB1143/26A patent/GB246155A/en not_active Expired

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