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
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24355—Continuous and nonuniform or irregular surface on layer or component [e.g., roofing, etc.]
  • Y10T428/24446—Wrinkled, creased, crinkled or creped
• • 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
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T428/00—Stock material or miscellaneous articles
  • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
  • Y10T428/24628—Nonplanar uniform thickness material
  • Y10T428/24669—Aligned or parallel nonplanarities
  • Y10T428/24686—Pleats or otherwise parallel adjacent folds

Definitions

• the present invention relates to the treatment of cellulosic textile materials with polymerizable thermosetting resins and catalysts according to an improved method to produce stable, chemically treated textile materials that are particularly suitable and desirable for use in the manu facture of garments wherein creases and pleats are introduced and set in a permanent manner by subsequent processing.
• the temperature in the oven for the curing step is sufiicient to complete the polymerization reaction of the polymerizable thermosetting resins and serves to insolubilize the contained resin in situ, and thus to set the pleats and/or creases in the desired configuration in the garment in a permanent manner.
• Pleats and creases introduced into a garment in this manner are in general substantially unaffected by repeated launderings.
• deferred or delayed curing In general, the foregoing sequence of operations for introducing permanent pleats and creases into a fabric is called deferred or delayed curing. Reference is made to US. Patent 2,974,432 where this process is described in further detail.
• the efiiciency of the deferred curing processes to produce the desired results depends 'by and large on the stability of the polymerizable material. That is, in order for the deferred curing operation to produce its optimum results, it is necessary that the polymerizable material used for the impregnation of the fabric remain in an unreacted state in the presence of the catalyst throughout the entire period following the initial application of the resin up to the final insolubilization or curing reaction. Thus, while the impregnated fabric is stored, shipped and processed into the finished garments, there must be no opportunity for the resin to undergo further reaction. It is essential that the entire process avoid a premature reaction of the polymerizable material on the fabric prior to the final curing step.
• thermosetting resins For practical purposes, for most of the thermosetting resins presently available commercially, it is necessary to carry out all the processing steps including fabric treatment to garment curing in the shortest possible time span. It is often desirable that this time span be as short as a few days in certain instances.
• the garment making operation i.e. cutting, sewing, styling, etc. and including the subsequent curing operation is a distinct and separate industry from the fabric treatment industry.
• one feature of the present invention resides in the addition of a selected inorganic or organic agent to the textile treating solution, which agent functions to absorb moisture and results in an improvement in avoiding premature reaction of the polymerizable material.
• a further feature of the present invention resides in making permanently creased and pleated cellulosic garments, or portions or sections of such garments as, for example, a sleeve, a collar, a cuff, or a trouser leg, from cellulosic textile materials which have been impregnated with a polymerizable thermosetting resin, a catalyst and a selected inorganic or organic agent which imparts stability of the treated textile material and prevents the premature reaction or curing of the polymerizable resin on the textile material.
• the stability to storage of cellulosic textile materials can be greatly improved by having present on the treated textile material a selected neutral or substantially neutral compound which may be organic or inorganic.
• selected compounds which will be more fully described hereinafter, are particularly effective in avoiding reaction of the polymerizable thermosetting resins at moderate temperatures such as are normally encountered in shipping, storage and processing of the treated cellulosic textile materials.
• permanently pleated and creased cellulosic garments can be obtained while avoiding the disadvantages and limitations inherent in the prior known processes.
• a further advantage of the present invention resides in the fact that the selected compounds used in connection with the resin do not significantly alter the course of the reaction at elevated temperatures and hence do not in any way detract or diminish from the effectiveness of the overall delayed curing process. This is particularly important since the fabrics, finished garments or other articles of manufacture must be cured under elevated temperatures in commercial operation and it is desirable to avoid anything which would seriously deter or adversely affect the final curing step.
• An additional advantage of the present invention is that the added materials do not have any appreciable effect on the properties of the fabric after curing and do not deleteriously modify or impair the product performance.
• the inorganic and organic compounds employed according to the present invention function to absorb ambient water in the garment and fibers and inhibit premature reaction and polymerization of the polymerizable thermosetting resin which is present on the textile fabric. This result is acomplished without adversely affecting the fabric or final garment product.
• one group of suitable agents are neutral and sub stantially or near neutral deliquescent inorganic salts including calcium halides, such as chlorides, bromides and iodides, cobaltous halides, manganous chloride, nickel halides, nickel nitrate and strontium halides.
• calcium halides such as chlorides, bromides and iodides
• cobaltous halides manganous chloride
• nickel halides nickel halides
• nickel nitrate and strontium halides are preferred.
• Weakly acidic deliquescent salts such as the halides of calcium and nickel can aslo be employed but the conditions for their use are somewhat more critical. However, strongly acidic deliquescent salts are to be avoided.
• organic humectants which are preferred, can be used as the selected agent for obtaining the improvement described above.
• organic humectants include glycerol and polyethylene glycols of the formula:
• the methods of the present invention are carried out by including the selected inorganic or organic agent with the polymerizable thermosetting resins and catalyst in the treating solution for impregnation of the textile material.
• the agent can be added to the aqueous solution used to pad the textile fabric.
• the amount of additive employed can be varied within wide limits although, generally, amounts ranging from about 0.5% to about 20% by weight based on the weight of the treating solution can be used and amounts ranging from 1 to 5% are preferred.
• thermosetting resins which are known in the art and which lack satisfactory storage stability in the presence of catalysts when employed in the deferred curing processes include but are not limited to urea formaldehyde resins, dimethylol ethylene urea, dimethylol alkyl triazone, dimethylol hexahydropyrimidone, hexamethoxymethyl melamine, dimethylol ethyl carbamate and dimethoxymethyl uron.
• Catalysts employed in connection with the foregoing resin finishes are well known in the art and are generally acidic in nature. Included for example are non-volatile acids, magnesium chloride, zinc chloride, zinc nitrate, aluminum chloride, salts of Lewis acids; e.g. zinc fluoroborate and the like.
• the fabrics or garments manufactured from them according to the conventional methods described above are stored or shipped prior to curing where the period or time duration between the initial impregnation and final curing is a relatively long period, it will be observed that the crease recovery of the fabric gradually increases as the storage period is prolonged.
• the increase in crease recovery values means that there is a reaction going on at the temperature at which the treated fabric is stored.
• the ability of the fabric or garments manufactured from them to retain pleats or creases imparted at a later date and set by curing is substantially reduced and the desirable crease retention properties are correspondingly impaired.
• the fabrics treated in accordance with the present invention wherein selected additives are present on the treated textile exhibit a substantially improved stability in storage and the crease recovery of the fabric remains unchanged for many weeks and excellent crease or pleat retention properties can be obtained by curing the treated fabrics even after prolonged storage.
• the increase in the crease recovery of treated fabrics prior to curing and the decrease in the crease or pleat retention ratings after curing in the creased or pleated configuration and washing are taken as measures of storage stability of cellulosic fabrics treated with catalyzed thermosetting resins and intended for use in deferred curing processes.
• cellulosic textile material is intended to include cellulosic polymers such as cotton, regenerated cellulose, linen and the like in the form of fiber, yarn and fabric, for example. Moreover, blends of cellulosic with other natural or synthetic fibers are also encompassed by the above expression.
• Solution A contained gms. of a 50% p hter f a p y y glycol (rrwlswlat DMMU aqueous solution and 13.5 gms. of 30% zinc ni- Welght were addedtrate solution;
• Solution B contained 100 gms. of a 50% The performance results for this treated fabric, creased, 55 DMMU aqueous solution, 20 f 30% Zinc nitrate Cured and tested as Shown 111 Example were? and 20 gms.
• a sample of each set was hand pleated pleat width), pressed to flatten the pleat and sharpen the crease, then cured at 325 F. for 3 minutes in a forced draft oven.
• the pleated and cured samples were rated for crease and pleat retention after laundering and tumble drying.
• a cellulosic textile fabric is impregnated with a polymerizable thermosetting resin and an acid catalyst for said polymerizable thermosetting resin, partially dried without reacting the polymerizable thermosetting resin, then cut and sewn into a garment or garment section according to any desired style and wherein the desired creases, folds, and pleats are introduced after completion of the garment or garment section and set by curing the completed article to insolubilize the resin
• the improvement comprising having present on the fabric an effective amount of a substantially neutral deliquescent inorganic salt which is a member selected from the group consisting of calcium halides, cobaltous halides, manganous chloride, nickel halides, nickel nitrate and strontium halides to thereby avoid a premature reaction of the polymerizable thermosetting resin on the textile fabric prior to the final curing step.
• EXAMPLE VII 2.
• a solution containing gms. per liter of dimethylol ethylene urea and 5 gms. per liter of zinc nitrate hexahydrate (Solution A) to give awet pickup of 100%.
• the samples were framed to the original dimensions and dried at 150-160 F.
• a second set of samples was treated with the same solution as described above, except that 30 gms. per liter of a polyethylene glycol of average molecular weight 1000 were added (Solution B).
• Solution B The crease recovery of the fabric was measured immediately, and at intervals thereafter, the samples being stored at 70 F. and RH during this period.
• the present invention is thus a valuable improvement for textile manufacturers enabling a far greater flexibility in storage and inventory requirements thus per-mitcreased and pleated cellulosicgarments wherein a cellulosic textile fabric is impregnated with a polymerizable thermosetting resin and an acid catalyst for said thermosetting resin, partially dried without reacting the polymerizable thermosetting resin, then cut and sewn into a garment or garment section according to any desired style and wherein the desired creases, folds, and pleats are introduced after completion of the garment and set by curing the completed garment to insolubilize the resin, the improvement comprising having present in the fabric an effective amount of an organic humectant to thereby avoid a premature reaction of the polymerizable thermosetting resin on the textile fabric prior to the final curing step.
• a method for the production of permanently creased and pleated cellulosic garments which comprises the steps of impregnating a cellulosic fabric with a polymerizable thermosetting resin and a catalyst, partially drying the fabric without substantially reacting the thermosetting resin, cutting and sewing the fabric into a garment or garment section according to any style or configuration, introducing at least one crease or fold into the garment after the completion of the garment, and heating the garment to cure the completed garment thereby insolubilizing the resin and permanently setting the crease or fold in the garment, the improvement comprising having present in the fabric an effective amount of a substantially neutral inorganic deliquescent agent which is a member selected from the group consisting of calcium halides, cobaltous halides, manganous chloride, nickel halides, nickel nitrate and strontium halides to thereby avoid premature reaction of the polymerizable thermosetting resin on the textile fabric prior to the final curing step.
• a substantially neutral inorganic deliquescent agent which is a member selected from
• a method for the production of permanently creased and pleated cellulosic garments which comprises the steps of impregnating a cellulosic fabric with a polymerizable thermosetting resin and a catalyst, partially drying the fabric without substantially reacting the thermosetting resin, cutting and sewing the fabric into a garmentor garment section according to any style or configuration, introducing at least one crease or fold into the garment after the completion of the garment, and heating the garment to cure the completed garment thereby insolubilizing the resin and permanently setting the crease or fold in the garment, the improvement comprising having present in the fabric an effective amount of an organic humectant to thereby avoid premature reaction of the polymerizable thermosetting resin on the textile fabric prior to the final curing step.
• organic humectant is a polyethylene glycol represented by the structural formula:
• n has a value of 1 to 50.
• organic humectant is a polyethylene glycol with a molecular weight of about 600.
• baltous halides, manganous chloride, nickel halides, nickel nitrate and strontium halides to thereby avoid premature reaction of the polymerizable thermosetting resin on the textile fabric prior to the final curing step.
• the improvement comprising having present on the fabric in an effective amount a substantially neutral deliquescent inorganic salt selected from the group consisting of calcium halides, cobaltous halides, manganous chloride, nickel halides, nickel nitrate and strontium halides to thereby avoid premature reaction of the polymerizable thermosetting resin on the fabric prior to the final curing step.
• a method for the production of cellulosic fabrics comprising the steps of impregnating the fabric with a treating solution containing a polymerizable thermosetting resin and a catalyst therefor, partially drying the fabric while avoiding substantial reaction of the polymerizable resin to produce a fabric which is suitable for the production of permanently creased, folded, or pleated cellulosic fabrics in subsequent steps wherein the fabric is subjected to a deferred curing reaction
• the improvement comprising having present in the solution employed in the treatment of the fabric an effective amount of a substantially neutral deliquescent inorganic salt selected from the group consisting of calcium halides, cobaltous halides, manganous chloride, nickel halides, nickel nitrate and strontium halides to thereby avoid permature reaction of the polymerizable thermosetting resin on the fabric prior to the final curing step.
• a method for the production of cellulosic fabrics comprising the steps of impregnating the fabric with a treating solution containing a polymerizable thermosetting resin and a catalyst therefor, partially drying the fabric while avoiding substantial reaction of the polymerizable resin to produce a fabric which is suitable for the production of permanently creased, folded, or pleated cellulosic fabrics in subsequent steps wherein the fabric is subjected to a deferred curing reaction, the improvement comprising having present in the fabric anaeifective amount of an organic humectant to thereby avoid premature reaction of the polymerizable thermosetting resin on the fabric prior to the final curing step.
• organic humectant is a polyethylene glycol represented by the structural formula:
• ,n has a value of 1 to 50.
• organic humectant is a polyethylene glycol with an average molecular weight of about 600.
• organic humectant is a polyethylene glycol with an average molecular weight of about 1000.
• the polymeriza'ble material is a member selected ffrom the group consisting of urea formaldehyde resins, dimethylol ethylene urea, dimethylol alkyl triazone, dimethylol hexahydropyrimidone, hexamethoxyme'thyl melamine, dimethylol ethyl carbamate, dimethoxymethyl uron.

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• Chemical & Material Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

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Publications (1)

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Cited By (3)

Citations (6)

• 0
  • CH CH1126565D patent/CH1126565D/xx unknown
• 1964
  • 1964-08-11 US US388938A patent/US3381310A/en not_active Expired - Lifetime
• 1965
  • 1965-08-10 GB GB34124/65A patent/GB1077225A/en not_active Expired
  • 1965-08-11 DE DE19651469484 patent/DE1469484A1/de active Pending

Patent Citations (6)

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