US2842422A - Process for bleaching organic textile materials with alkali metal chlorites containing an ester which controls the evolution of chlorine dioxide - Google Patents

Process for bleaching organic textile materials with alkali metal chlorites containing an ester which controls the evolution of chlorine dioxide Download PDF

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Publication number
US2842422A
US2842422A US489735A US48973555A US2842422A US 2842422 A US2842422 A US 2842422A US 489735 A US489735 A US 489735A US 48973555 A US48973555 A US 48973555A US 2842422 A US2842422 A US 2842422A
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US
United States
Prior art keywords
ester
bleaching
evolution
textile materials
chlorite
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Expired - Lifetime
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US489735A
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English (en)
Inventor
Mosse Pierre
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.)
Rhodiaceta SA
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Rhodiaceta SA
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Publication date
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Publication of US2842422A publication Critical patent/US2842422A/en
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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
    • D06L4/24—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 chlorites or chlorine dioxide
    • D06L4/26—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 chlorites or chlorine dioxide combined with specific additives
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/06—Resin bleach

Definitions

  • the present invention relates to the bleaching of textile materials by means of chlorite solutions, and it has particular relation to improvements in carrying out this bleaching process.
  • the main object of the present invention is the elimination of these disadvantages.
  • Another object of the invention consists in providing a novel process for bleaching by means of salts of chlorous acid, without the harmful evolution of dioxide of chlorine into the atmosphere.
  • the textile materials to be bleached are treated in hot solutions of chlorite containing at least one non-oxidizable ester of an organic acid, without the addition of acids or acidic salts or compounds which, by oxidation, yield acids.
  • ester and its amount are selected in dependence on the desired extent of bleaching and the material to be bleached.
  • a simple, complex or internal ester of a monoor dicarboxylic acid which may be aliphatic, cyclanic or SEARCH ROOM KIT aromatic, can be used, such as ethyl acetate, formates or acetates of glycol or glycerol, ethyl lactate or tartrate, ethyl phthalate, -butyrolactone and the like.
  • the cation of the chlorite used is irrelevant and, for example, an alkali chlorite or alkaline-earth metal chlorite can be used.
  • the proportion between chlorite and the ester should be selected in such manner that the pH of the bath is preferably in the range between 8 and 6, at the beginmng.
  • the process of the invention can be applied to all kinds of textile materials, which may be natural, artificial or synthetic, especially textile materials consisting of cellulose, cellulose derivatives, polyamides, polyesters and acrylic or vinylic polymers.
  • the concentrations of chlorite and of the ester and the temperature of bleaching can be essentially varied, depending on the material to be bleached and can be easily determined by simple tests. However, his of particular advantage to use solutions containing 0.5- grams of the chlorite per liter and 01-20 grams of ester per liter and to use 10300 grams of chlorite per kilogram of the material to be bleached. It will be understood that any non-acidic material, particularly anti-rust or anticorrosion agents, such as nitrates, fluorides and the like can be incorporated in the baths. Bleaching is continued until the desired effect is obtained, i. e. usually for about to 180 minutes.
  • Bleaching according to the invention can be carried out at any desired temperature.
  • temperatures in the range of 40 to 150 0, although these limits can be considerably exceeded.
  • Example I 2 kg. of polyacrylonitrile fiber are immersed in 100 liters of a solution containing:
  • the solution is gradually heated to 100 C. and this temperature is maintained for one hour.
  • the fiber is then rinsed, wringed and dried. It has a very pure white appearance.
  • the pH of the bath is always equal to at least 6.5 and no evolution of dioxide of chlorine can be observed in the neighborhood of the bleaching vessel. By the addition of 2 grams of sodium nitrate per liter, any corrosion of non-oxidizable steel is prevented.
  • Example II 3 kg. of a polyamide fiber is immersed in liters of a solution containing:
  • the bath is gradually heated in an autoclave to 130 C. within an hour and this temperature is maintained for minutes.
  • the fiber is very well bleached without the evolution of dioxide of chlorine.
  • Example III 0.500 kg. of cellulose acetate fiber are immersed in 25 liters of a solution containing:
  • the resulting fiber is very well bleached without the evolution of dioxide of chlorine.
  • Example V 2 kg. of glycol polyterephthalate fiber are immersed for 1 /2 hours at 98 C. in 50 liters of a solution containing:
  • Example VI 2 kg. of cotton fiber are immersed during 1 hour at 96 C. in 30 liters of a solution containing:
  • the fiber thus obtained is very well bleached and no evolution of dioxide of chlorine takes place.
  • Example VII 3 kg. of glycol polyterephthalate fiber are immersed for 1 hour at 96 C. in 75 liters of a solution containing:
  • the resulting fiber is very well bleached and no evolution of dioxide of chlorine takes place.
  • a process for bleaching organic textile materials comprising bleaching said materials in an aqueous solution of an alkali metal salt of chlorous acid having a temperature of from to C., in which is dissolved an ester selected-from the group consisting of ethyl acetate, glycol formate, glycerol formate, glycol acetates, glycerol acetates, ethyl lactate, ethyl tartrate, ethyl phthalate and -butyrolactone, the solution being free from acids, acidic salts and compounds oxidizable to yield acids, said solution containing 0.1 to 20 grams of the ester per liter and the chlorite and ester being initially in the proportion to give said solution a pH between 8 and 6.
  • an ester selected-from the group consisting of ethyl acetate, glycol formate, glycerol formate, glycol acetates, glycerol acetates, ethyl lactate, e

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Detergent Compositions (AREA)
  • Treatment Of Fiber Materials (AREA)
US489735A 1954-02-23 1955-02-21 Process for bleaching organic textile materials with alkali metal chlorites containing an ester which controls the evolution of chlorine dioxide Expired - Lifetime US2842422A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1010940X 1954-02-23

Publications (1)

Publication Number Publication Date
US2842422A true US2842422A (en) 1958-07-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
US489735A Expired - Lifetime US2842422A (en) 1954-02-23 1955-02-21 Process for bleaching organic textile materials with alkali metal chlorites containing an ester which controls the evolution of chlorine dioxide

Country Status (7)

Country Link
US (1) US2842422A (enrdf_load_stackoverflow)
BE (1) BE535444A (enrdf_load_stackoverflow)
CH (1) CH327242A (enrdf_load_stackoverflow)
DE (1) DE1010940B (enrdf_load_stackoverflow)
FR (1) FR1100066A (enrdf_load_stackoverflow)
GB (1) GB764649A (enrdf_load_stackoverflow)
NL (1) NL89269C (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4891216A (en) * 1987-04-14 1990-01-02 Alcide Corporation Disinfecting compositions and methods therefor
US4986990A (en) * 1984-03-21 1991-01-22 Alcide Corporation Disinfection method and composition therefor
US5185161A (en) * 1984-03-21 1993-02-09 Alcide Corporation Disinfection method and composition therefor
WO2001094685A1 (en) * 2000-06-05 2001-12-13 The Procter & Gamble Company Bleaching in conjunction with a lipophilic fluid cleaning regimen

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1205484B (de) * 1957-07-13 1965-11-25 Bayer Ag Verfahren zum Bleichen mit neutral oder schwach alkalisch eingestellten Chloritloesungen
DE1091978B (de) * 1957-08-02 1960-11-03 Bayer Ag Verfahren zum Bleichen von Textilmaterialien mit Chloriten

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190505296A (en) * 1905-03-14 1906-03-14 Hugo Zeitschner An Improved Process of Bleaching Textile Fibres, Yarns, and Fabrics.
GB399319A (en) * 1931-10-13 1933-10-05 Chem Ind Basel Improvements in processes of bleaching by means of hypochlorites
US2482891A (en) * 1945-03-16 1949-09-27 Olin Mathieson Solid, stable chlorine dioxide generating compositions

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB190505296A (en) * 1905-03-14 1906-03-14 Hugo Zeitschner An Improved Process of Bleaching Textile Fibres, Yarns, and Fabrics.
GB399319A (en) * 1931-10-13 1933-10-05 Chem Ind Basel Improvements in processes of bleaching by means of hypochlorites
US2482891A (en) * 1945-03-16 1949-09-27 Olin Mathieson Solid, stable chlorine dioxide generating compositions

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4986990A (en) * 1984-03-21 1991-01-22 Alcide Corporation Disinfection method and composition therefor
US5185161A (en) * 1984-03-21 1993-02-09 Alcide Corporation Disinfection method and composition therefor
USRE36064E (en) * 1984-03-21 1999-01-26 Alcide Corporation Disinfection method and composition therefor
US4891216A (en) * 1987-04-14 1990-01-02 Alcide Corporation Disinfecting compositions and methods therefor
WO2001094685A1 (en) * 2000-06-05 2001-12-13 The Procter & Gamble Company Bleaching in conjunction with a lipophilic fluid cleaning regimen

Also Published As

Publication number Publication date
CH327242A (fr) 1958-01-31
NL89269C (enrdf_load_stackoverflow)
DE1010940B (de) 1957-06-27
GB764649A (en) 1956-12-28
FR1100066A (fr) 1955-09-15
BE535444A (enrdf_load_stackoverflow)

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