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
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
  • D06M15/423—Amino-aldehyde resins
• • 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
  • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
  • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
  • D06M15/37—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D06M15/39—Aldehyde resins; Ketone resins; Polyacetals
  • D06M15/41—Phenol-aldehyde or phenol-ketone resins

Definitions

• This invention relates to an improved textile material and the production thereof. It is concerned with the treatment of such textile materials as cotton, silk, wool, ramie, jute, hemp, artificial silk, acetyl silk and linen, for example in the form of fabric or yarns.
• the invention may be applied to mixed fabrics.
• the invention is particularly applied to cellulosic materials.
• one of the greatest defects of a fabric composed entirely of cotton has been the ease with which such fabric is creased or crumpled when crushed or'folded under pressure in the hand.
• the same disadvantage is present in the case of other materials such as artificial silk and linen; some materials such as wool are less readily creased or crumpled.
• the object of the present invention is to render textile materials less susceptible to creasing "or crushing, while retaining the suppleness of a woven or knitted textile fabric and the process is not limited to cellulosic fabrics since useful results can be obtained by its application to other fabrics.
• Our invention consists broadly in a process of treating cellulosic or other yarns or fabrics which eliminates or materially reduces their liability to crease or crush.
• Our invention further consists in the process by which this result can be obtained wherein final condensation or polymerization of a synthetic resin in presence of cellulosic or other yarns or fabrics is effected in such manner as to produce a non-crush effector to reduce markedly the extent to which the material crushes or crumples without tendering the material unduly.
• a fabric is regarded as exhibiting a non-crush effect or possessing little or no susceptibility to crease or crumple when it shows no pronounced creasing on folding or crushing in the hand.
• the method of preparation of the intermediate resin must be chosen according to the nature of the material to be treated. Thus some solutions containing free phenol would dissolve acetyl silk; other solutions would destroy hemp or jute, and so on. Again substantial quantities of strong acid are undesirable for cotton during the drying stage hereafter described but permissive with Wool.
• the material preferably with alkali, wash out the alkali and impregnate the'wet material with the synthetic resin components.
• the fabrics maybe dried prior to impregnation provided that suitable mechanical treatment such as nipping between rollers is applied to ensure penetration of the synthetic resin into the individual fibres of the yarn. If the material is dried it is preferable to wet out with water before impregnation.
• fabrics of cotton or linen may have imparted to them the property of not creasing or crumpling when folded or crushed in the hand without undue ten dering of the cloth and so that this property is not substantially destroyed by washing.
• Example 1 phenol, 100 parts of 40% formaldehyde, 4'
• the fabric After impregnation with the reaction mixture, in a mangle, (the time of impregnation and the number of the type of cloth used), the fabric is squeezed so as to retain roughly the same weight of liquor as formerly and dried at a low temperature or at the temperature of the stenter. It is finallyheated for 2 minutes at 170C. on drying tins or by other means, so as to insolubilize the resin and produce the required property. A soaping process is then applied to remove the excess reagents and after washing and drying, the treatment is complete.
• the invention includes the impregnation of fabrics which have been swollen with sulphuric acid or other reagents and washed.
• the fabric can be treated with I a current of hot gaseous formaldehyde.
• carbonates such as potassium carbon- 'or pyridine.- In these cases it may be desired to boil the mixture for a longer time prior to impregnation.
• The-semi-condensation product may be obtained without heating if desired; for example a solution of phenol and formaldehyde of caustic soda is allowed to stand in the cold for several days.
• the semi-condensation is" driven too far nips given may vary with e. g. by over-boiling, it may be corrected, up to a certain formaldehyde, or suitable organic solvents to keep the product in solution.
• Dilute solutions may be used by employing a series of impregnations with low-temperature drying after each impregnation for example, drying at about 40 to 50 (3., and' finally heating until the desired effect is obtained e. g. at 180 C. for 3 to 5 minutes.
• Example 2 173 grs. p. brom phenol 263 ccs. 40% formaldehyde 2% on total Weight 62 N aOH.
• Example 3 40 grs. O-chlorophenol 100 ccs. formaldehyde 40% 4 cos. N aOH 63 Tw.
• Example 4 (1 part by weight) and formalde- 0 solution,(2 parts) are mixed to- Urea hyde 40 gether and made slightly alkaline by the addition of hexamine or caustic soda. This mixture is refluxed at the boil for,3 to 5 minutes and cooled quickly. Three parts of the mixture are diluted and to 4% of glacial acetic wider the equivalent amount of any weak acid are added. I Mercerized cloth -which has been squeezed and" left damp after the mercerizing process is run through the mixture and given several nips between rollers. The fabric is dried at a low temperature and the resin made insoluble by heating at 180 C. for 2 minutes on tins or by other means.
• alkaline catalysts may be used to obtain the "intermediate condensation product butfit'is very desirable to use acid catalysts for the final condensation on with .1 part of water point by adding phenol, alkali I the fabric since otherwise the non-crush of feet will be less resistant to washing.
• alkaline catalysts may be used in both stages of the condensation.
• Ea'ample 5 Dissolve 95 parts by weight of dihydroxy diphenyl dimethyl methane (acetone-phenol condensation product) in 120 parts by weight of hot formaldehyde, cool and add 12 parts by weight of caustic soda solution (specific gravity 1.20).
• wet mercerized fabric is run through aqueous formaldehyde (1040% formaldehyde), squeezed and then run through the above bath with repeated nipping between rollers.
• the cloth is dried at a low temper ature e. g. 40 C. when further condensation occurs between the acetone phenol body and the formaldehyde and is then heated on drying tins at 175 C. for 2 minutes.
• a soaping to remove excess reagents completes the treatment and the cloth is finally dried in the usual manner.
• the proportions of acetone phenol to formaldehyde may be varied.
• the result of the treatment according to the invention is to produce a noncrush effect on the fabric without undue tendering of the fabric, which will resist washing to a substantial extent.
• the fabric should retain the suppleness of a woven or knitted textile fabric, that is it should be capable of use as a dress material and can be draped about the human body or can fall into graceful folds. It must not be too stiff.
• the success of the treatment is to be judged by physical rather than chemical tests.
• Mechanical treatment e. g. pressure, is desirable during impregnation and especially when treating unmercerized fabric, to secure the desired distribution.
• a cellulosic textile fabric produced by the process of claim 9 in which so much' of a synthetic resin, solidified from a 1i ui'd; contained within but not substantia ly between the individual fibers that the fabric is supple but shows a substantially lessened tent ency to crease or crumple.
• An impregnated textile material produced by the process of claim 9 containing within but not substantially between theindividual fibers a synthetic resin which is completely insolubilized by heating and in such quantity that the material shows a substantially lessened tendency to crease or crumpie while retaining its suppleness.

Landscapes

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=26260415

Family Applications (1)

Country Status (5)

Cited By (16)

Families Citing this family (9)

• 0
  • NL NL25654D patent/NL25654C/xx active
  • BE BE346313D patent/BE346313A/xx unknown
• 1927
  • 1927-11-22 DE DET34253D patent/DE499818C/de not_active Expired
  • 1927-11-30 FR FR657348D patent/FR657348A/fr not_active Expired
• 1928
  • 1928-11-02 US US316871A patent/US1734516A/en not_active Expired - Lifetime

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