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

Definitions

• the invention relates to process for imparting fancy efiects to fabrics; and the invention is particularly useful where it is desired to locally restrict such effects to given areas, such for example as in producing so-called patterned effects.
• the process is applicable to textile fabrics whether made by weaving, knitting or otherwise; and to such fabrics whether made of vegetable or animal fibers or mixtures of both, whether such fibers be natural or artificial.
• such artificial fibers produced from reprecipitated cellulose as well as those made from cellulose ethers and cellulose esters are suitable for treatment according to this invention.
• the present invention is based on the surprising observation that the difficulty can be solved by substituting, instead of one of the thickening agents heretofore employed in previous unsuccessful attempts, a *cellulosic thickening agent for the zinc chloride.
• cellulosic thickening agent we mean to comprehend cellulose presented in suitable form adapted to be dissolved in zinc chloride, such for example as cellulose pulp, cotton linters, reprecipitated cellulose (for instance, viscose) and organic cellulose derivatives (for instance, cellulose esters, such as acetyl cellulose).
• the fabric to be treated is artificial silk (rayon) it has been found desirable to employ as the cellulosic thickening agent a material which is composed in whole or in part of organic cellulose derivatives, for instance cellulose ester acetyl-cellulose in particular has proven to be desirable; and we have found it advantageous to use a mixture of acetyl cellulose and cellulose in some instances. Where such mixture is used, the cellulose may be provided, for example, in the form of pulp, cotton linters or re-precipitated cellulose. We have also used a cellulosic thickening agent which is free from organic cellulose derivatives, and such use may be found suitable in certain instances.
• the printing mass is prepared by taking zinc chloride solution and adding 1% to 3% of the jcellulosic thickening agent to be employed and which is dissolved therein at a low temperature, i. e., room temperature (18 C.).
• a low temperature i. e., room temperature (18 C.).
• the zinc chloride solution be of a concentration of the order of %75%, obtained for example by dissolving in water enough zinc'chloride to produce almost a degree of saturation.
• a solution of thickening agent and zinc chloride may be made by admixing the ingredients at a temperature of the order of 10-30 0. (preferably 18 C.) for a sufficient time to effect the solution.
• the thickened printing mass thus produced becomes cloudy after standing some time, but this does 'not in any way impair its efiicacy.
• a greatly improved result is obtained, however, if the thickening agent is first allowed to swell in the cold zinc chloride solution, then the temperature is raised and the solution of the thickening agent and the zinc chloride completed and the mass finally cooledofi.
• the mixture of zinc chloride and thickening agent is allowed to stand at room temperature (18 C.) for ten hours to effect preswelling, the mass is then stirred and the temperature raised to C. until a complete solution resulted, and finally the mass is allowed to cool off under constant stirring until a temperature of 30 C. is reached; at which point the mass is ready for application to the fabric.
• the finished printing mass is now placed on the textile fabric to be printed, in some suitable manner, for instance by printing, spraying on or the like.
• the goods so treated are dried, at the highest possible temperature, for instance at a temperature of the order of about -105 C. (preferably C.), then washed, centrifugated and the drying is completed.
• the parts which previously have been covered with the printing mass then possess the desired parchmentizing efiect and these parts differ from the less transparent background and are in the form of transparent designs.
• the textile fabric Before printing with the zinc chloride mass, the textile fabric can be pre-treated as desired, for instance, boiled out, bleached, mercerized, dyed or printed in colors.
• the fabric can be subsequently treated with swelling agents in tensioned or loose condition after the printing with zinc chloride, drying and washing of the mass.
• Example 1 A bleached viscose-voile fabric is printed with a mass of the following composition:
• the fabric is thereupon completely dried at 95 C., washed out, centrifugated and finally completed by drying on a frame under tension.
• the printed parts are transparent and show good resistance to tearing.
• Example 2 Cotton mousseline, mercerized, bleached, is printed with a printing mass composedas follows:
• the printed goods are dried at 95 C. completely, washed out, centrifugated and dried on a frame under tension. Thereupon the goods are placed in a caustic soda solution of 32 B.v for 4 minutes, washed with water and acidified with sulfuric acid of 2 B. After repeatedthorough washing, the goods are dried with the least possible tension. Embossed effects are obtained.
• Example 3 Viscose fabric is printed with a mass consisting of the following:
• Example 5 A bleached mercerized cotton muslin is printed with a mass consisting of the following:
• the printing mass in this instance is preferably produced by swelling the thickening agent in the concentrated solution of zinc chloride at room temperature (18 C.) for a period of 10 hours, raising the temperature of the mixture to C. and stirring the same to complete the solution. Thereafter, the mass thus produced is allowed to cool off to 30 C. under constant stirring and preferably while at this temperature is applied to the fabric as by printing. Immediately after the printing, the fabric is completely dried at C., washed out, centrifugated and finally finished on a tension frame.
• the step which comprises printing on the fabric a parchmentizing mass comprising a concentrated solution of zinc chloride in which a cellulosic thickening agent is dissolved.
• the step which comprises printing on the fabric a parchmentizing mass comprising a concentrated solution of zinc chloride in which a cellulosic thickening agent is dissolved at a low temperature.
• the step which comprises printing on the fabric a parchmentizing mass comprising a concentrated solution of zinc chloride in which a-cellulosic thickening agent" has been swollen while cold and then completely dissolved at a higher temperature and then the said mass cooled off.
• the step which comprises printing on the fabric a parchmentizing mass comprising a concentrated solution of zinc chloride in which a cellulosic thickening agent is dissolved, said cellulosic thickening agent being composed at least in part of an organic cellulose derivative.
• the step which comprises subjecting the fabric to and limiting to predetermined localized areas the action of a concentrated solution of zinc chloride by means of a cellulosic thickening agent dissolved therein.
• the step which comprises subjecting the fabric to and limiting to predetermined localized areas the action of a concentrated solution of zinc chloride by means of a cellulosic thickening agent dissolved therein, the relative proportions of the cellulosic thickening agent to the zinc, chloride solution being about 1%-3% by weight of said thickening agent and 97%-99% chloride solution.
• the step which comprises subjecting the fabric to and limiting to predetermined localized areas the action of a concentrated solution of zinc chloride by means of a cellulosic thickening agent dissolved therein by first swelling said agent in a cold solution of said zinc chloride and completing the solution at a higher temperature, the relative proportions of the cellulosic thickening agent to the zinc chloride solution being about 1%-3% by weight of said thickening agent and 9'? %99% by weight of said zinc chloride solution.
• the cellulosic thickening agent is composed of cellulose and an organic cellulose derivative.
• the step which comprises printing on the fabric a parchmentizing mass comprising a. concentrated solution of zinc chloride in which a cellulosic thickening agent is dissolved and to which mass formaldehyde has been added to reduce the parchmentizing effect.
• the step which comprises swelling a cellulosic thickening agent in a cold concentrated solution of zinc chloride, completing the solution at a higher temperature and permitting the mass to cool oil.
• the step which comprises swelling a cellulosic thickening agent in a cold concentrated solution of zinc chloride, completing the solution while heating the ingredients to a temperature of the order of 60-80 C. and permitting the mass to cool ofi to about 30 C.
• the step which comprises swelling a cellulosic thickening agent in a concentrated solution of zinc chloride for a substantial time at a temperature of about 18 C., stirring the mixture and increasing the temperature to about 70 C. and stirring the mass and permitting it to cool off to about 30 C.
• the steps which comprise swelling a c'ellulosic thickening agent in a cold concentrated solution of zinc chloride, completing the solution at a higher temperature, permitting the mass to cool ofito a temperature at least as high as 18 C., and applying the mass at this temperature to the fabric to be treated.

Landscapes

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

Applications Claiming Priority (1)

Publications (1)

Family

ID=6710428

Family Applications (1)

Country Status (3)

Cited By (2)

• 1935
  • 1935-08-02 AT AT149340D patent/AT149340B/de active
  • 1935-08-05 FR FR794036D patent/FR794036A/fr not_active Expired
  • 1935-11-27 US US51828A patent/US2112895A/en not_active Expired - Lifetime

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