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
  • D06M13/144—Alcohols; Metal alcoholates
• • 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
  • D06M13/224—Esters of carboxylic acids; Esters of carbonic acid
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2369—Coating or impregnation improves elasticity, bendability, resiliency, flexibility, or shape retention of the fabric
  • Y10T442/2377—Improves elasticity
• • 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
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2861—Coated or impregnated synthetic organic fiber fabric
  • Y10T442/2869—Coated or impregnated regenerated cellulose fiber fabric

Definitions

• Textile materials having improved stretch properties are produced by treating textile material comprising cellulose organic acid esters having less than 0.29 free hydroxyl groups per anhydroglucose unit with a compound selected from the group consisting of beta-butoxyethyl acetate, acetyl triethyl citrate and benzyl alcohol.
• This invention relates to textile materials having stretch properties. It particularly relates to a process for imparting stretch properties to textile materials composed of cellulose triacetate and to the novel product made therefrom. It specifically relates to a process for introducing stretch properties into cellulose triacetate by sole- 1y chemical means.
• Textile materials composed of cellulose organic esters of low, free hydroxyl content have many desirable properties. Thus, after such materials have been properly heat treated they may be ironed at high temperatures, are fairly resistant to glaze or shrinkage on pressing with moist steam, and they generally have excellent crease resistance, dimensional stability, and wash-fastness. Even though these properties have enabled textile materials of this type to receive wide acceptance in the market place it has heretofore not been possible for these materials to find an end use where stretch fabrics are either required or desired, since such materials normally only have from 1% to 5% stretch.
• a textile material composed of cellulose organic acid esters of low, free hydroxyl content having unusually high stretch properties can be produced by a method which comprises treating sucsh material with a compound selected from the group consisting of ⁇ i-butoxyethyl acetate, acetyl triethyl citrate, and benzyl alcohol under conditions whereby said material is shrunk an amount sufficient to produce at least 16% stretch and no more than 5% permanent growth in said textile material.
• cellulose organic acid esters of low, free hydroxyl content refer to cellulose esters having less than 0.29 free hydroxyl groups per anhydroglucose unit, e.g., cellulose acetate having an acetyl value of at least 60%, preferably at least 61% calculated as combined acetic acid hereinafter referred to as cellulose triacetate.
• Other lower aliphatic acid esters of cellulose of low hydroxyl content also may be employed inv this invention.
• the propionate, butyrate, mixed acetate-propionate, mixed acetate-butyrate, and mixed acetate-formate esters of cellulose may be used with satisfactory results. It is distinctly preferred, however, that cellulose triacetate be used as the textile material having stretch properties imparted thereto in the practice of this invention.
• the contacting of the textile material may be carried out in any manner known to those in the art as long as the required amount of treating agent contacts the textile material as set forth in greater detail hereinbelow. It is preferred, however, that the contacting be carried out in an aqueous liquor having contained therein the ,B-butoxyethyl acetate, acetyl triethyl citrate, or benzyl alcohol.
• the apparatus used in the practice of this invention may be pressure equipment or preferably can be carried out in a conventional winch or jig.
• the contacting may be performed at temperatures in excess of 50 C. up to temperatures beyond which the filamentary material is damaged and preferably is carried out at temperatures ranging from 60 C.
• Liquor ratio may range from 2:1 to :1, preferably, from about 3:1 to 8:1 in the case of the jig; and from about 10:1 to 5021 in the case of winch contacting. Since the liquor ratio will govern the proportion of treating agent in contact with the fiber at any given concentration of the agent in the liquor, it is apparent that the optimum concentration will to some extent be related. to the liquor ratio.
• the apparatus and liquor ratios should be chosen so that an agent dosage of from 35% to 300% by weight, based on the weight of cellulose triacetate in the textile material, will be used for the contacting medium, and preferably from 40% to
• the cellulose triacetate textile material used in accordance with this invention may be in the form of staple fibers, tow, continuous filament or staple fiber yarns, fabrics and/or finished articles. They may be used alone or in admixture with other fibrous materials such as W001, cotton, rayon, silk, nylon, glass, polymers and/or copolymers of vinylidene compounds such as acrylonitrile, ethylene, propylene, vinyl chloride, vinyl acetate, vinylidene cyanide, and the like.
• the textile material is a woven fabric composed of cotton warp and cellulose triacetate having at: least 16% stretch and no more than 5% permanent growth.
• these novel fabrics contain at least a major proportion of cellulose triacetate in the filling and preferably at least one other filamentary material in the warp; said fabric cellulose triacetate filling wherein the cellulose triacetate 5 having from 16% to 40% stretch and from 0.5 to 5% in the filling may be either alone or in admixture with permanent growth.
• the novel textile materlal, as a new these other fibrous materials; but, preferably comprises composition of matter, is characterized by the fact that a major proportion of the filling.
• the cotthe cellulose triacetate portion of said material has been ton yarn used in the warp should not be finer than a swollen by the action of the agent as evidenced, usually forty (40) singles count but may be as coarse as desired. by a crystal order index (CO1) in excess of 1.00 after
• the filamentary material used in the filling should have being treated with the treating agent in accordance with a denier from 75 to 600 or the equivalent, with a prethe process of this invention in contrast with, usually, ferred denier ranging from 200 to 450.
• the filamentary a crystal order index of less than 1.00 for the untreated material may have a slight twist, e.g., from 0.5 to 5 cellulosic triacetate.
• the construction of the fabric must be ing the number and/or the sharpness of the major diffracsuch that the filamentary material in the direction desired tion arcs of the fiber.
• cellulose trifor stretch is free to move and thereby shrink under the acetate has four pronounced diffraction peaks at 8, 10, treatment of the agent.
• a plain weave fabric 12.6 and 16 20 where 20 is the angle which the diffracted having approximately equal thread spacing in the warp X-ray beam makes with respect to the incoming beam. and filling are preferred since this construction permits Depending upon the degree of treating action these a high sinusoidal yarn crimp to be imparted to the filling peaks show differences in intensity, height and weight.
• a quantitative representation of these difierences is yarn to shrink against the resistance of the warp threads. found by measuring the ratio of peak height to weight Prior to contacting the textile material with the desired at half height for a series of diifraction peaks from X- treating agent as shown herein the material may be ray difiractomer curves or microphotometered X-ray scoured, desized, bleached and/or treated in any of the photographs.
• the treated material can also be finished in usual fashion average of the ratios of each peak height to its weight by rinsing, extracting, loop drying (temperature 225 at half height of the four diffraction peaks at 8, 10, 12.6 300 F. for 3-10 minutes, preferably from 4-6 minutes), and 16 20. and the like.
• the crystalline structure developed in the post-treatment operations the fabric should not be sub yarn from the agent treatment should be such that its jected to more than minimum amount of tension in the crystalline order index measured as described above is at direction that it is desired to impart stretch until the least 1.00 and preferably 1.2 to 1.5.
• the stretch r0 ert has been imparted to the filling and the heat tr eati nen i TWO types of Woven fabncs [90th having the fiumg is carried out under minimum warp tension.
• minimum p tension is defined as that tension scoured, des1zed and bleached in a conventional manner which will not introduce more than 10% extension of g th-en were Ffmtacted with a treatmg agent under the the warp.
• this tension should impart no more foAowmg coildlt-lonsz than 5% extension to the warp.
• this heat H glent D9sage: 40% by Weight based on the Welght of treatment should be carried out such that the textile maose i terial is subjected to a minimum amount of tension in 3525 (grams of agent to grams of calm the direction that has been treated to impart stretch.
• Example III The fabrics of Example I were treated again as in Example I except that, additionally, following contact with the treating agent, the fabrics were finally heat treated at 410 F. over Morrison cans underIminimum warp tension 1 with the following results:
• Example V The fabric of Example IV was processed as in Example IV except that different treating agents were used, to wit: fl-methoxyethyl acetate, glycol diacetate, and triacetin (glycerol triacetate). In each run the stretch property was less than 10% so that these agents are deemed ineffective in producing stretch into cellulose triacetate fabrics and filamentary materials.
• the treating agent may be added to the carrier in any manner known to those skilled in the art. It can be added to an agitated vessel having the carrier therein. In the case of BCA, for example, the BCA is added to the water with high agitation since this treating agenthas low solubility in water.
• a commercial dispersing agent is 1 Sulfieient tension to cause approximately extension of the warp.
• stretch is defined with reference to how much extension may be imparted to the textile material and have it returned spontaneously to its original orientation.
• permanent growth relates to the degree to which the textile material fails to return to its original orientation after relaxation of the tension which was used to impart the stretch.
• the procedureused for measuring stretch and percent growth is well known to those skilled in the art. However, it basically consists of using a stretch tester consisting of a vertical frame with sets of fixed clamps at the top and a means of attaching a weight to the bottom of the test specimen. A gauge is attached to measure the extension of the fabric. A holding mechanism is provided to keep the specimen extended a predetermined amount.
• the stretch test is performed at 70 F., 65% relative humidity using a 2 /8" x 14 /2" strip, with the longer length parallel to the stretch direction.
• the test strip is also raveled to 2" in width.
• a four pound weight is used to stretch the test strip and the specimen is cycled three times between zero and four pounds at approximately five seconds per cycle. The stretch is measured at the bottom of the fourth cycle and converted into percent stretch.
• such fabric can be placed in a suitable tenter frame which fixes the filling dimensions and the fabric is fed into the liquor with sufiicient overfeed to allow the warp to shrink.
• a method of producing a woven fabric having a stretch of from about 16 percent to about 40 percent, based on the original length of said fabric which comprises contacting a woven fabric containing a major proportion of cellulose triacetate in the filling, said filling filamentary material having a denier of from 75 to 600,
• said woven fabric contains spun yarns in the Warp consisting essentially of cotton, and wherein said fabric is contacted with beta-butoxyethyl acetate.

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

Applications Claiming Priority (2)

Publications (1)

Family

ID=27052219

Family Applications (2)

Family Applications After (1)

Country Status (5)

Citations (6)

• 1965
  • 1965-10-15 US US3477806D patent/US3477806A/en not_active Expired - Lifetime
• 1966
  • 1966-10-12 GB GB4552766A patent/GB1145697A/en not_active Expired
  • 1966-10-13 DE DE19661594957 patent/DE1594957A1/de active Pending
  • 1966-10-14 NL NL6614478A patent/NL6614478A/xx unknown
  • 1966-10-14 BE BE688272D patent/BE688272A/xx unknown
• 1969
  • 1969-05-27 US US3563841D patent/US3563841A/en not_active Expired - Lifetime

Patent Citations (6)

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