Classifications

• • 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
  • D06M13/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment
  • D06M13/10—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with non-macromolecular organic compounds; Such treatment combined with mechanical treatment with compounds containing oxygen
  • D06M13/12—Aldehydes; Ketones
  • D06M13/127—Mono-aldehydes, e.g. formaldehyde; Monoketones
• • 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
  • D06M11/58—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

Definitions

• cellulose-containing material can be made crease-resistant and its strength substantially maintained by treating it with a swelling agent and thereafter with formaldehyde in the presence of a non-alkaline catalyst, and heating while dry to a temperature of about 90 C. to about C. for a suiiicient length of time to produce an effective wrinkle-resistance:
• a swelling agent we have also found that'further improvement in the strength and other valuable properties may be given to natural cellulose fiber, for example such as cotton, by giving it a caustic swellingand shrinking 'and then,stretching it preferably beyond its original" length, and thereafter proceeding with the wrinkle-resistant treatment.
• the invention can be carried out in a simple and effective manner by exposing the goods before the wrinkle-resistant treatment to the action of a swelling agent, leaving the goods a short time in such condition, then thoroughly washing out the swelling agent and then treating them, in the manner above referred to, with formaldehyde in the presence of a nonalkaline catalyst and heating them for a sumcient length of time to about 90 C. to about 160 C. to produce the desired crease-resistance.
• formaldehyde in the presence of a nonalkaline catalyst and heating them for a sumcient length of time to about 90 C. to about 160 C. to produce the desired crease-resistance.
• the breaking elongation and tensile strength of cotton is-also improved by the process. Resistance to swelling agents for example is shown by the following: If parchmentizing sulfuric acid is allowed to act on the goods for more than one minute or mercerizing lye (caustic soda) is allowed to act for several hours, no shrinking or other change is noticeable. We have also found that material treated in accord- "ance withthe invention is almost completely immune to substantive dyestuffs.
• alkalis such as caustic soda solution, ca'us tic potash solution, quaternary ammonium bases, various acids, such as sulfuric acid, phosphoric acid, etc.
• Salt solutions such as calcium rhodanide, zinc chloride, ammoniacal copper oxide and others may be used.
• alkalis such as caustic soda solution, ca'us tic potash solution, quaternary ammonium bases, various acids, such as sulfuric acid, phosphoric acid, etc.
• Salt solutions such as calcium rhodanide, zinc chloride, ammoniacal copper oxide and others may be used.
• salt solutions such as calcium rhodanide, zinc chloride, ammoniacal copper oxide and others may be used.
• caustic alkalis appear to be especially suitable, These excel because of their low price and particularly because of good results which they give in in creasing the breaking elongation, tensile strength and resistance to swelling agents ofxthe com pletcd material.
• able efi'ect can be observed at a strength of 2 B. while for good results concentrations of 6 B. or more are required. Concentrations of up to even higher than 30 B. can be applied, if desired. Caustic soda solution may also be used provided concentrations are employed which will not cause injury to the rayon. Good results can be obtained with a caustic soda lye of about 3 B. but higher'concentrations may be applied if desired. It is advisable to subject the rayon for a number of minutes in untensioned condition to the action of the swelling agent, then to wash thoroughly, if necessary, with hot water and to follow this, with, or without intermediate dyeing, by the formaldehyde treatment. Normally the swelling agent is used atroom temperature, but higher and lower temperatures may also be used.
• the resistance to swelling agents referred to above is'of special importance if the process 'of the invention is applied to'yams and these yarns are thereupon woven as effects in a. fabric otherwise consisting of untreated fiber material.
• the finished fabric which for instance may consist on the one hand of raw cotton yarn and on the other hand of cotton yarn or rayon yarn treated in accordance with our invention as effect yarns, can be scoured (kier boiled) andbleached without difliculty and without losing the valuable realone or in combination with other fibers.
• Cotton yarn in skeins is normally mercerised with caustic soda of 32 B. in a yarn mercerizing apparatus. It is then washed out with hot and cold water and dried. Thereupon the yarn is impregnated in a bath containing 56 liters of water, 40 liters of formaldehyde 40% and 40 liters of solution of aluminium sulphocyanide of 17 B. It is then centrifuged and dried during several hours at 50-60 C. After this it is heated during a quarter of an hour at 120-125 C. and finally, to eliminate the odour of formaldehyde, washed out with a diluted solution of soap or ammonia in water, rinsed and dried- 2.
• Cotton yarn, the same as above, are treated following Example 1 with the exception that instead of normally mercerizing it is stretched just beneath the tearing-limit during the mercerisation. a
• the tensile strength of the overstretched mercerized yarn is about 20% higher than the tensile strength of the normally mercerized yarn and is of the same range or beyond the range of the unmercerized untreated preliminary material.
• the material so treated shows a higher orientation in its micelles.
• Viscose-yarn is desized with a solution of 3 g. soap per liter and one of the usual textile assistants and then first washed with warm and subsequently with cold water and dried. Thereupon it is swelled in a loose condition with caustic potash of 6 B. during minutes at 18-20 C., rinsed with boiling water, washed out with cold water and soured with sulphuric acid of 08 B., washed and. dried. The yarn is then treated with the same impregnating bath as described above in Example 1 during 10 minutes, centrifuged and dried during several hours.' After this it is heated during minutes at 118-120" C. 'For deodorization it may then be rinsed with a diluted soap or ammonia-solution, washed out and dried.
• the breaking elongation of the so-treated viscose-yam is about higher than the breaking elongation of a formaldehyde-treated yarn which had not been swelled before, whereas the tensile strength is about of the same range or beyond the tensile strength of the untreated preliminary material.
• cellulose-c ntaining material or cellulose-containing fabric or the like expressions are used, they are employed to cover cotton'or other natural cellulose-containing fibers, as well as all regenerated-cellulose-artificial silks for example such as viscose and cuprammoniui'n silk; and in th form of flbersg-yarn or fabric, either used
• formaldehyde it is intended to include polymers of formaldehyde and formaldehyde-splitting compounds.
• nonalkaline catalyst it is employed to cover acid catalysts, substances liberating an acid catalyst in solution or when exposed to the reaction conditions here described in which latter case they may also be neutral in the original state, but not alkaline catalysts.
• a process for rendering cellulose-containing material crease-resistant which comprises treating cellulose-containing material with a swelling agent, thereafter impregnating the material with formaldehyde in the presence of a non-alkaline catalyst, heating the impregnated material while substantially dry for a sufficient length of time to about 90-160 C. and causing a chemical combinationbetween the cellulose and formaldehyde whereby an effective crease-resistant quality is obtained and the tendency of the formaldehyde to weaken the fiber is at least in part offset by the preswelling.
• a process for rendering cellulose-containing material crease-resistant which comprises treating cotton with caustic alkali of mercerizing strength, thereafter impregnating the material with formaldehyde in the presence of a nonalkaline catalyst, heating the impregnated ma terial while substantially dry for a suiflcient.
• a process for rendering cellulose-containing material crease-resistant which comprises treating artificial silk with caustic potash of swelling strength, thereafter impregnating the material with a crease-resistant agent which consists principally of formaldehyde in the presence of anonalkaline catalyst and heating the impregnated material while dry for a suflicient length of time to about 90-160 C. whereby an effective creaseresistant quality. is obtained.
• a process for renderingcellulose-containing material crease-resistant which comprises treat-' ing cotton with a swelling agent, thereby shrinking the cotton, then stretching the cotton,
• a crease-resistant agent which consists principally of formaldehyde in the presence of a non-alkaline catalyst and heating the impregnated material .while dry for a sufllcient length of time to about 90-160 C. whereby an effective crease-resistant quality is obtained.
• a process for rendering cellulose-containing material crease-resistant which comprises subjecting cotton to a mercerizing alkali treatment thereby mercerizing and shrinking it, stretching the cotton to beyond its original length while washing it to remove the alkali, then impregnating the cotton while still in the stretched condition with formaldehyde in the presence of a non-alkalinecatalyst andheating the impregnated material while dry for a suflicient length of time to about 90-160 C. thereby giving to the cotton an effective crease-resistant quality and improved strength.
• a new product in accordance with claim 9 in which the cellulose-containing material is cotton having a high orientation in its micelles.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Chemical Or Physical Treatment Of Fibers (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
• Treatment Of Fiber Materials (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=25981091

Family Applications (1)

Country Status (6)

Cited By (8)

Families Citing this family (4)

Family Cites Families (3)

• 1936
  • 1936-12-29 DE DEH150079D patent/DE747928C/de not_active Expired
  • 1936-12-29 GB GB35628/36A patent/GB488095A/en not_active Expired
• 1937
  • 1937-12-23 US US181454A patent/US2205120A/en not_active Expired - Lifetime
  • 1937-12-27 BE BE425441D patent/BE425441A/xx unknown
  • 1937-12-28 NL NL85726A patent/NL49407C/xx active
  • 1937-12-28 FR FR831396D patent/FR831396A/fr not_active Expired

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