Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06Q—DECORATING TEXTILES
  • D06Q1/00—Decorating textiles
  • D06Q1/02—Producing patterns by locally destroying or modifying the fibres of a web by chemical actions, e.g. making translucent
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
  • D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/07—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof
  • D06M11/11—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with halogens; with halogen acids or salts thereof; with oxides or oxyacids of halogens or salts thereof with halogen acids or salts thereof
  • D06M11/155—Halides of elements of Groups 2 or 12 of the Periodic Table
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
  • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
  • D06M11/38—Oxides or hydroxides of elements of Groups 1 or 11 of the Periodic Table
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/32—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond
  • D06M11/36—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with oxygen, ozone, ozonides, oxides, hydroxides or percompounds; Salts derived from anions with an amphoteric element-oxygen bond with oxides, hydroxides or mixed oxides; with salts derived from anions with an amphoteric element-oxygen bond
  • D06M11/46—Oxides or hydroxides of elements of Groups 4 or 14 of the Periodic Table; Titanates; Zirconates; Stannates; Plumbates
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/51—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof
  • D06M11/55—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with sulfur, selenium, tellurium, polonium or compounds thereof with sulfur trioxide; with sulfuric acid or thiosulfuric acid or their salts
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/58—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides
  • D06M11/67—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with nitrogen or compounds thereof, e.g. with nitrides with cyanogen or compounds thereof, e.g. with cyanhydric acid, cyanic acid, isocyanic acid, thiocyanic acid, isothiocyanic acid or their salts, or with cyanamides; with carbamic acid or its salts
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
  • D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
  • D06M11/68—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof
  • D06M11/70—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with phosphorus or compounds thereof, e.g. with chlorophosphonic acid or salts thereof with oxides of phosphorus; with hypophosphorous, phosphorous or phosphoric acids or their salts

Definitions

• This invention relates to a process for transparentizing fibers and fabrics of regenerated cellulose.
• Transparentizing of cotton fabrics by means of sulfuric acid is known and has been used extensively commercially.
• 'Iransparentizing of artificial silk, namely, regenerated cellulose silk fabrics with swelling agents is known, but due to the ease with which sulfuric acid and other swelling agents proposed attack the regenerated cellulose, it has been difficult to control such processes to produce a transparentization, either in all-over or pattern effect, having the same uniform appearance and high quality obtainable by the process as applied to cotton.
• Attempts to secure greater uniformity and to lessen the vigorous action of the sulfuric acid have been proposedby combining with the acid substances, such as monovalent or multivalent alcohols, heterocyclic bases, formaldehyde, ammonia salts, urea and their derivative amino compounds. But these processes have not given the desired results to produce a satisfactory commercial transparentized viscose or other regenerated cellulose in transparent-form.
• the principal object of the invention accordingly is to provide a process for the treatment of regenerated cellulose silk, such as viscose, which may be easily controlled to produce a transparentized, regenerated cellulose of high quality and appearance.
• caustic soda of a much lower concentration may be used, namely, 6 to less than 12 Baum'. Room temperature is also used. The treatment is followed by washing with boiling water to eliminate the caustic soda.
• the use of caustic potash and caustic soda in the concentrations mentioned is in accordance with the known solubilities of regenerated cellulose, such as viscose in aqueous solutions of these alkalies.
• Potassium hydroxide has a far lower dissolving power for regenerated cellulose, dissolving (when about 4.5 N KOI-I is used) only about 6% thereof as compared with for sodium hydroxide (using about 2.5 N NaOI-I) at 0 C.
• dissolving when about 4.5 N KOI-I is used
• sodium hydroxide using about 2.5 N NaOI-I
• the dissolving power decreases as the temperature rises.
• My process is suitable for the production of both all-over effects and for local transparent effects with the use of water-soluble or waterinsoluble resists and with dyes or pigments a may be desired.
• the process is applicable to the treatment of all fine fabrics made from regenerated cellulose, such as spun rayon muslin or viscose muslin, or corresponding voiles.
• .As transparentizing or parchmentizing agents there may be used the well-known cellulose swelling agents such as sulfuric acid (with or without additions) of over 42 Baum', phosphoric acid of over 50 Baum, hydrochloric acid of over 20 Baum, zinc chloride solutions of over 50 Baum, calcium thiocyanate solutions of over 25 Baum, in which connection the requisite concentrations are in :addition dependent also upon the reaction temperature.
• cellulose swelling agents such as sulfuric acid (with or without additions) of over 42 Baum', phosphoric acid of over 50 Baum, hydrochloric acid of over 20 Baum, zinc chloride solutions of over 50 Baum, calcium thiocyanate solutions of over 25 Baum, in which connection the requisite concentrations are in :addition dependent also upon the reaction temperature.
• caustic potash solution of about 30 Baum at room temperature may be employed, or caustic soda solution may be used in concentrations of 6 to less than 12 Baum with subsequent rapid removal of the caustic to correct this lack of clarity and non-uniformity.
• the control of the process is more easily effected by the use of caustic potash.
• Viscose muslin which has been pre-cleansed by the usual methods and dried under tension is passed in the broad state through sulfuric acid of 48 Baum (measured at 15 0.). The temperature of the acid is kept between l C. and +l C.; the time of action amounts to 11 seconds. Immediately thereafter the acid is washed out with .water at room temperature, and any possible residues of acid are neutralized besides with dilute ammonia. The fabric is now freed from the excess of water by pressing or suction, and in still moist condition is then exposed for 6 seconds to the action of caustic potash solution of 30 Baum, freed from caustic by means of hot water at about 70 C., acidified with sulfuric acid of 1 Baum, and washed. The material can now be either blued or dyed by the usual methods, whereupon it is dried under tension in the directions of warp and weft; expediently it is further stentered before the drying.
• Viscose muslin that has been imprinted with dyes fast to acid and fast to alkali is exposed for 12 seconds to the action of sulfuric acid cooled to C., whose specific gravity measured at 15 C. amounts to 47 Baum, is then washed neutral and dried under tension. Now the material is immersed for seconds at to C. in caustic potash solution of Baum, freed from caustic .with hot water (about 70 C.), acidified, and washed until a neutral reaction is attained. After pressing-off of the excess water, the material is dried under tension. The drying of the material can be effected on a tension frame.
• the temperature of the bath is kept at 25 C.
• the time of action amounts to 16 seconds. Tm mediately thereafter the material is washed cold, and the moist material is then subjected to aftertreatment with caustic potash solution of 28 Baum for 8 seconds at room temperature. After the freeing from caustic and washing with hot water, the material is stentered and dried under tension. Advantageously, the material is finally calendered besides.
• Spun rayon muslin that has been treated in this manner corresponds in appearance to a highgrade cotton organdy.
• Viscose spun rayon muslin is, in accordance with the usual methods, singed, desized, boiled, bleached, dried on a tension frame, and imprinted with a resist of the following composition:
• Viscose voile is parchmentized at 10 C. for 15 seconds with phosphoric acid of 55 Baum (measured at 15 C.), and immediately thereafter is subjected to after-treatment with caustic potash solution as described in Example 4 and dried under tension.
• Viscose marquisette is pre-cleansed by the well-known methods and dried on a tension frame. Now the material is passed in the open width through 60% sulfuric acid to which per liter 10 cc. of 40% technical concentrated formaldehyde have been added. The temperature of the acid should be 0 C., the time of action 12 seconds. After the washing out of the acid, the material is dried under tension, whereupon it is subjected to after-treatment with caustic soda solution of 8 Baum for 5 seconds, is washed hot, acidified, and thoroughly rinsed. Finally the fabric is tensed in the warp and weft directions and dried.
• a light weight fabric consisting in warp and weft of cuprammonium silk yarns is precleansed by the well-known methods and dried on a tension frame. Now the material is treated in the open width for 12 seconds with sulfuric acid of 475 Baum at a temperature of 0 C. After washing out the acid the fabric is exposed for 6 seconds to the action of caustic potash solution of 28 Baum, washed with hot water to remove the caustic, :acidulated with sulfuric acid of 1 Baum, washed until a neutral reaction .is attained, stentered and dried under tension.
• the fabrics obtained in accordance with the above examples have a uniform appearance where an all-over effect is obtained and the same uniformity may be observed in the transparent patterned goods.
• the goods are of high quality, are relatively soft, and of marketable character.
• regenerated cellulose material refers to regenerated cellulose in the form of fiber, yarns, and fabrics of such material.
• a process which comprises treating regenerated cellulose with an aqueous solution selected from the group consisting of sulfuric acid of about 42 to about 48 B., phosphoric acid of about 50 to about 55 B., hydrochloric acid of the order of B., zinc chloride of the order of 50 B and calcium thiocyanate of the order of B. for a period of time of the order of 10 seconds at a temperature in a range of about room temperature and below, whereby an acid parchmentized regenerated cellulose textile material results which lacks clarity and is non-uniform in appearance, and treating such material substantially free from acid at room temperature with an aqueous caustic alkali solution selected from the group consisting of potassium hydroxide of the order of B. and sodium hydroxide at 6 to less than 12 B. for a period of the order of 10 seconds to produce a clear uniform transparent fabric.
• an aqueous solution selected from the group consisting of sulfuric acid of about 42 to about 48 B., phosphoric acid of about 50 to about 55 B., hydrochlor
• a process which comprises treating regenerated cellulose with an aqueous solution of sulfuric acid of about 42 to about 48 B. for a period of time of the order of 10- seconds at a temperature in a range of about room temperature and below, whereby an acid parchmentized regenerated cellulose textile material results which lacks clarity and is non-uniform in appearance, and treating such material substantially free from acid at room temperature with an aqueous caustic alkali solution selected from the group consisting of potassium hydroxide of the order of 30 B. and sodium hydroxide at 6 to less than 12 B. for a period of the order of 10 seconds to produce a clear uniform transparent fabric.
• a process which comprises treating regenerated cellulose with an aqueous solution of phosphoric acid of about 50 to about B. for a period of time of the order of 15 seconds at a temperature in a range of about room temperature and below, whereby an acid parchmentized regenerated cellulose textile material results which lacks clarity and is non-uniform in appearance, and treating such material substantially free from acid at room temperature with an aqueous solution of potassium hydroxide of about 30 B. for a period of the order of 6 seconds to produce a clear uniform transparent fabric.

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• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Coloring (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=4522964

Family Applications (1)

Country Status (7)

Cited By (2)

Citations (13)

• 0
  • BE BE461347D patent/BE461347A/xx unknown
  • NL NL60956D patent/NL60956C/xx active
• 1944
  • 1944-12-27 CH CH246968D patent/CH246968A/de unknown
• 1945
  • 1945-11-02 FR FR916769D patent/FR916769A/fr not_active Expired
  • 1945-11-30 GB GB32414/45A patent/GB604713A/en not_active Expired
  • 1945-12-22 US US637119A patent/US2516083A/en not_active Expired - Lifetime
• 1948
  • 1948-12-04 DE DEP23558A patent/DE850292C/de not_active Expired

Patent Citations (14)

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