GB399319A - Improvements in processes of bleaching by means of hypochlorites - Google Patents

Improvements in processes of bleaching by means of hypochlorites

Info

Publication number
GB399319A
GB399319A GB28584/32A GB2858432A GB399319A GB 399319 A GB399319 A GB 399319A GB 28584/32 A GB28584/32 A GB 28584/32A GB 2858432 A GB2858432 A GB 2858432A GB 399319 A GB399319 A GB 399319A
Authority
GB
United Kingdom
Prior art keywords
materials
ester
bleaching
cotton
vegetable
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
Application number
GB28584/32A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Schweiz AG
Original Assignee
Gesellschaft fuer Chemische Industrie in Basel CIBA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gesellschaft fuer Chemische Industrie in Basel CIBA filed Critical Gesellschaft fuer Chemische Industrie in Basel CIBA
Publication of GB399319A publication Critical patent/GB399319A/en
Expired legal-status Critical Current

Links

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
    • D06L4/20—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen
    • D06L4/22—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents
    • D06L4/23—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which contain halogen using inorganic agents using hypohalogenites

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)

Abstract

Materials of vegetable origin are bleached by means of a hypochlorite bleaching liquor containing an ester derived on the one hand from a sulphonated aromatic dicarboxylic acid and on the other hand from an alcohol containing more than two carbon atoms, or a salt of such an ester. The process is applicable to the bleaching, by means of solutions of sodium or calcium hypochlorite, of various materials of vegetable origin, e.g. vegetable fibres such as cotton, ramie, jute, flax or hemp, also other materials such as paper, straw, sulphite cellulose or ground wood, or artificial materials such as regenerated cellulose, e.g. viscose or cuprammonium artificial silk, or cellulose esters, e.g. acetate artificial silk. It may also be applied to the cold bleaching of vegetable materials which have not been boiled, e.g. loose raw cotton. In examples: (1) raw cotton is treated with a chlorine bleaching liquor containing the sodium salt of the amyl ester of sulphophthalic acid, and is then rinsed and passed through a bisulphite bath; (2) cotton piece goods desized by means of "Diastafor" or in some other manner are boiled under pressure with sodium hydroxide solution and then treated with a chlorine bleaching liquor containing the sodium salt of the ester of sulphophthalic acid with amyl alcohol or with a hydrogenated cresol. Specifications 370,845, 371,144, 372,855, and 399,320 are referred to. The Specification as open to inspection under Sect. 91 comprises the use of esters from sulphonated aromatic dicarboxylic acids and organic hydroxy compounds in general containing more than two carbon atoms. This subject-matter does not appear in the Specification as accepted.
GB28584/32A 1931-10-13 1932-10-13 Improvements in processes of bleaching by means of hypochlorites Expired GB399319A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH399319X 1931-10-13

Publications (1)

Publication Number Publication Date
GB399319A true GB399319A (en) 1933-10-05

Family

ID=4514176

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28584/32A Expired GB399319A (en) 1931-10-13 1932-10-13 Improvements in processes of bleaching by means of hypochlorites

Country Status (3)

Country Link
DE (1) DE589774C (en)
FR (1) FR743925A (en)
GB (1) GB399319A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842422A (en) * 1954-02-23 1958-07-08 Rhodiaceta Process for bleaching organic textile materials with alkali metal chlorites containing an ester which controls the evolution of chlorine dioxide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2842422A (en) * 1954-02-23 1958-07-08 Rhodiaceta Process for bleaching organic textile materials with alkali metal chlorites containing an ester which controls the evolution of chlorine dioxide

Also Published As

Publication number Publication date
DE589774C (en) 1933-12-13
FR743925A (en) 1933-04-08

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