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
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
  • C08B13/00—Preparation of cellulose ether-esters
  • C08B13/02—Cellulose ether xanthates
• • D—TEXTILES; PAPER
  • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
  • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
  • D01F2/00—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof
  • D01F2/06—Monocomponent artificial filaments or the like of cellulose or cellulose derivatives; Manufacture thereof from viscose
• • D—TEXTILES; PAPER
  • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
  • D04C—BRAIDING OR MANUFACTURE OF LACE, INCLUDING BOBBIN-NET OR CARBONISED LACE; BRAIDING MACHINES; BRAID; LACE
  • D04C1/00—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof
  • D04C1/02—Braid or lace, e.g. pillow-lace; Processes for the manufacture thereof made from particular materials
  • D04C1/04—Carbonised or like lace
• • D—TEXTILES; PAPER
  • D05—SEWING; EMBROIDERING; TUFTING
  • D05C—EMBROIDERING; TUFTING
  • D05C17/00—Embroidered or tufted products; Base fabrics specially adapted for embroidered work; Inserts for producing surface irregularities in embroidered products
• • 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
  • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10S8/00—Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
  • Y10S8/13—Cyanoethylation of fibers

Definitions

• a general process for manufacturing chemical lace includes embroidering a base cloth which dissolves in a certain solvent, preferably in water or diluted alkali solution, with a fiber which does not dissolve in said solvent and thereafter dissolving the base cloth with said solvent.
• a base cloth of fiber for chemical lace has been prepared hitherto as follows:
• the object of the invention is to provide a process for manufacturing chemical lace by using a base cloth prepared by a new method.
• an excellent base cloth for chemical lace may be manufactured by a method comprising dissolving the reaction product which is obtained by reacting alkali cellulose simultaneously with carbon disulfide and acrylonitrile in diluted alkali solution to form viscose, spinning said viscose into fiber, and fabricating woven or non-woven fabric containing said fiber.
• a chemical lace may be manufactured by embroidering the base cloth obtained in the manner described above with a diluted alkalior water-insoluble fiber, winding the resulting cloth on a frame, dipping it in a diluted alkali solution or water and, while Winding the cloth on the frame, moving the liquid, and dissolving off the base cloth.
• alkali cellulose contains no compound which wastes acrylonitrile such as Na S and Na CS 98 100% of the acrylonitrile may be utilized advantageously for the reaction with the cellulose, the utilization ratio of acrylonitrile being very high.
• the rate of said reaction is the highest.
• the degration of alkali cellulose is restricted by simultaneously reacting carbon disulfide and acrylonitrile with said alkali cellulose as compared to carbon disulfide alone in xanthation.
• the amount of carbon disulfide is more than 10%. Since carbon disulfide and acrylonitrile are reacted with alkali cellulose simultaneously, the xanthogenation and cyanoethylation of the cellulose occur at the same time, both of the reactions serving to make the cellulose soluble, so the carbon disulfide in such a small amount as 10% based on the weight of cellulose has a sufficient effect. With an amount of carbon disulfide less than 10%, a fiber for base cloth desired for the object of the invention can not be obtained even by increasing the amount of acrylonitrile. The optimum amount of carbon disulfide is 20-50%.
• the amount of acrylonitrile is more than 20% based on the weight of cellulose.
• An amount less than 20% is unsuitable for the invention, because the fiber prepared under such conditions swells and does not dissolve in diluted alkali solution.
• the amount of acrylonitrile used in the process for cyanoethylating alkali cellulose must be more than 20% based on the weight of cellulose, more preferably more than 30%.
• the amount of acrylonitrile is preferably rnore than 60%, more preferably and more than may be added.
• a woven fabric consisting alone or mainly of said diluted alkalior water-soluble cyanoethyl cellulose or dry or wet unwoven fabric thereof may be used.
• a chemical lace in which the insoluble fiber remains as a net can be obtained by dissolving off the soluble fiber of the base cloth with diluted alkali solution or water.
• a diluted alkali-insoluble fiber such as polyamide synthetic fiber may be used and when using water, not only polyvinyl alcohol synthetic fiber but also other all artificial and natural fibers having water resisting property may be used, although a water-soluble fiber such as alginate fiber, non-acetalized polyvinyl alcohol synthetic fiber etc. is unsuitable.
• an aged alkali cellulose prepared according to the conventional method is added a mixture of carbon disulfide in an amount of more than 10 'by Weight based on the cellulose and acrylonitrile in an amount of more than 20% by weight based on the cellulose, and the mixture is reacted at 25 C. for 60-120 minutes. After the reaction is complete, the product is dissolved in diluted alkali solution to form a viscose containing 4-10% of cellulose and 38% of total alkali. The resulting viscose is spun in a spinning bath containing 5-15% of H 80 10-30% of Na SO and 0.55% of ZnSO to yield a rayon of -150 deniers.
• the rayon yarn is neutralized with alkali in a concentrated Glaubers salt or alcohol, washed then with diluted alcohol to remove the salt and dried.
• the yarn is woven to plain weave as base cloth.
• the base cloth is embroidered with a diluted alkalior waterinsoluble fiber, after which the resulting cloth is wound on a frame, which is dipped in diluted alkali solution or water and the liquid is moved while winding the cloth on the frame to dissolve off the base cloth.
• a chemical lace may be manufactured.
• the hank When dissolving the cloth, the hank may be rotated or vibrated or travelled. In such a case, however, the base cloth should be moved together with the frame while it is wound on the frame. If the base cloth is moved indifferently from the frame, the embroidered part is damaged. However, if the dissolving liquid is moved and also the base cloth together with the frame is moved as one body, not only may this disadvantage be eliminated but also the time for dissolution may be decreased.
• the frame to be used in the invention includes a frame consisting of polygonal prism structure, or a cylindrical frame consisting of a perforated wall etc. It is no matter that the base cloth is moved slightly by moving the liquid.
• a vibration method in which steam is blown into the liquid bath a mechanical agitation method, a vibration method by ultra sonic waves, a movement method in which the liquid in the bath is circulated by a pump and the like, etc.
• the diluted alkali solution in the invention means the solution at room temperature or heated solution having an alkali concentration of 1-5%, and water includes cold, warm and hot water and hot water under pressure. In particular, diluted alkali solution or water at room temperatures are most suitable for use.
• Example 1 To an alkali cellulose obtained by the conventional method which is aged up to a degree of polymerization of 310 are added carbon disulfide in an amount of 40% by Weight based on the cellulose and acrylonitrile in an amount of 40% by weight based on the cellulose, and the mixture is reacted at 25 C. for 2 hours. The resulting product is dissolved in diluted alkali solution to yield a viscose containing 8.5% of cellulose and 5.5% of total alkali.
• the viscose is spun in a spinning bath containing of H SO of Na SO and 2% of ZnSO to yield a rayon having single filaments and a total denier of 150.
• the rayon yarn is neutralized with sodium carbonate in a saturated bath of Glaubers salt, washed then with diluted methanol and dried.
• the resulting rayon yarn is woven into a plain weave which, as base cloth, is embroidered with a water resisting polyvinyl alcohol synthetic fiber.
• the fabric embroidered on the base cloth is wound on a frame consisting of a polygonal prism structure, which is dipped in 3.5% caustic soda solution at room temperature to dissolve off the base cloth by stirring the liquid.
• the fabric obtained is neutralized with diluted sulfuric acid solution, washed with water and dried to yield a chemical lace consisting of water resistant polyvinyl alcohol synthetic fiber.
• Example 2 To an alkali cellulose obtained by the conventional method which is aged up to a degree of polymerization of 300 are mixed carbon disulfide in an amount of 40% by weight based on cellulose and acrylonitrile in an amount of 80% by weight based on the cellulose simultaneously and the mixture is reacted at 25 C. for 2.5 hours.
• a base cloth of plain weave is woven in the same manner as described in Example 1.
• a fabric embroidered with viscose rayon on the base cloth is wound on a frame which is dipped in water at about 50 C. to dissolve and remove oil the base cloth while circulating water by means of a pump.
• chemical lace consisting of viscose rayon yarn may be obtained.
• Example 3 To an alkali cellulose obtained by the conventional method which is aged up to a degree of polymerization of 300 are added carbon disulfide in an amount of 50% by weight based on the cellulose and acrylonitrile in an amount of by weight based on the cellulose simultaneously and the mixture is reacted at 25 C. for 2 hours. The product is dissolved in diluted alkali solution, and spun in a spinning bath having the same composition as in Example 1. The resulting fiber is neutralized, washed and then dried.
• the resulting rayon yarn is woven into a base cloth which is embroidered with cotton yarn.
• the fabric obtained is wound on a frame, which is dipped in water at ordinary temperature to dissolve off the base cloth (the dissolving liquid being circulated by means of a pump).
• a chemical lace is obtained in which only the portion embroidered with cotton yarn remains.
• a process for the manufacture of chemical lace which comprises reacting alkali cellulose simultaneously wth more than 10% by weight based on the cellulose of carbon disulfide and more than 20% by weight based on the cellulose of acrylonitrile, dissolving the resulting reaction product in dilute alkali solution to form a viscose, spinning fibers therefrom, manufacturing from said fibers a base cloth, embroidering the base cloth with a different fiber insoluble in a solvent selected from the group consisting of dilute alkali and water to form an embroidered fabric, and dipping the embroidered fabric in a solvent selected from the group consisting of dilute alkali and water to dissolve the base cloth.
• a process for the manufacture of chemical lace which comprises dissolving a reaction product obtained by reacting alkali cellulose simultaneously with more than 10% by weight based on the cellulose of carbon disulfide and more than 20% by weight based on the cellulose of acrylonitrile to form a viscose, spinning the viscose into fibers, manufacturing from said fibers a base cloth, embroidering the base cloth with another fiber insoluble in a solvent selected from the group consisting of dilute alkali and water to form an embroidered fabric, and dipping the embroidered fabric in a solvent selected from the group consisting of dilute alkali and water to dissolve the 'base cloth.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Textile Engineering (AREA)
• Chemical Kinetics & Catalysis (AREA)
• General Chemical & Material Sciences (AREA)
• Materials Engineering (AREA)
• Biochemistry (AREA)
• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Manufacturing & Machinery (AREA)
• Artificial Filaments (AREA)

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Cited By (6)

Citations (8)

• 1964
  • 1964-10-16 US US404483A patent/US3315329A/en not_active Expired - Lifetime
  • 1964-10-20 DE DE19641519534 patent/DE1519534A1/de active Pending
  • 1964-10-21 CH CH1361264A patent/CH425426A/de unknown

Patent Citations (8)

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