Classifications

• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
  • D06P3/34—Material containing ester groups
  • D06P3/40—Cellulose acetate
  • D06P3/42—Cellulose acetate using dispersed dyestuffs
• • 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
• • 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
  • D06M13/232—Organic carbonates
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
  • D06P1/642—Compounds containing nitrogen
  • D06P1/6421—Compounds containing nitrile groups
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/64—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing low-molecular-weight organic compounds without sulfate or sulfonate groups
  • D06P1/651—Compounds without nitrogen
  • D06P1/65106—Oxygen-containing compounds
  • D06P1/65125—Compounds containing ester groups
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/667—Organo-phosphorus compounds

Definitions

• the present invention relates to novel processes for improving the properties of highly ester-ified cellulose filamentary materials such as cellulose :tniace-tate.
• filamentary materials of organic acid esters of cellulose having fewer than about 0.29 free hydroxyl groups per anhydroglucose unit are treated with hot dilute aqueous solutions of lower aliphatic acid esters of alkoxy lo-wer alkanols, al'k-oxy alkoxy-lower .allcanols or lower alkylene glycols, of triethyl phosphate, triethylene glycol diacetate, cyclic ethylene carbonate or lactonitrile.
• the solutions are subsequently Washed out and the filamentary materials dried.
• the treated materials dye more rapidly and evenly, have a (higher safe ironing temperature and are stronger after being subjected to heat treatment.
• Organic acid esters of cellulose which can be treated in accordance with the present invention include formates, propionates, bu-tyrates, acetate propionates, acetate butyrates, and the like although cellulose acetate, having an acetyl value of at least about 59% and preferably at least about 61% by weight calculated as acetic acid, is preferred.
• This material is hereinafter referred to as cellulose triacetate and the invention will be further described with reference to this preferred cellulose ester.
• the filamentary material may be in the form of fibers, tows, yarns, webs, fabrics, or the like, alone or blended with other fibers which are not damaged by the treatment.
• the lower fatty acid esters, lower alkyl ethers and lower alkoxy-lower alkyl ethers of hydroxy-lower .alkyl esters of lower fatty acids e.g. ethylene glycol di-acetate, B-ethoxyethyl acetate and butoxyethoxyethyl acetate give the best results from the points of view of degree of improvement, economy, ease and permissible latitude in treatment, rapidity and low useful concentrations.
• the concentration of treating agent may vary from as low as about 1 to 50%, by weight.
• the temperature of treatment may vary' from about 50 to 150 C.
• the time of treatment may last up to about 3 hours although it preferably is complete in about 1 hour or less, e.g. about 6 seconds at 150 C.
• the time and temperature vary inversely with each other and with concentration. It is an advantage of the invention that even if the concentration, time and temperature are all simultaneously at relatively high values the filamentary materials will not be damaged, ie, the process is not sensitive to variations within the broad ranges although in the interest of economy obviously it will be desired to employ the shortest possible :times and the lowest possible concentrations and temperatures.
• the concentration will vary with the temperature and time and with the identity of the treating agents.
• the preferred concentration is 1 to 25%; for ethylene glycol diacetate 2 to 16%; for ibutoxyethoxyethyl acetate 1 to 6%; for triethyl phosphate to 25%; for triethylene glycol diacetate 5 to 10%; for ethylene carbonate 1 to for lactonitrile 1 to 25%.
• the treatment may be effected by immersion of the filamentary material in the treating solution for the requisite time, by travel of the filamentary material through a treatment bath and then out of the bath with the distance and speed correlated to give the desired treatment time,
• the treatment may be effected simu' taneou-sly with the dyeing as by adding a dyestutf to the solution or it may .be effected subsequent to dyeing but preferably it is effected prior to dyeing and is followed by washing out of the treating solution prior to dyeing.
• This permits large amounts of the filamentary material to be treated in a single treatment apparatus, with obvious economies, even if portions of the filamentary materials are intended to be dyed different colors. Also the dilute treating solution recovered by washing is uncolored and can easily be concentrated and re-used.
• the filamentary material is given a heat treatment such as being contacted for about 10 to 60 seconds with hot air at about 200 to 235 C. in a tenter frame or a hot flue, by 3 to 30 seconds of contact with metal surfaces such as hot cans at about 200 to 235 C., or the like.
• the sequence is preferably pretreatment, followed by dyeing, followed by heat treatment.
• filamentary materials which have been pretreated in accordance with the present invention are stronger than materials identical except for omission of the pretreatment, whether or not dyeing has taken place.
• Example I (a) A portion of fabric woven of cellulose acetate staple fiber yarn having an .acetyl value of 61.5% calculated as acetic acid is immersed in 55 times its weight of a 5% solution of fi-ethoxyethyl acetate .at C. and after 300 seconds is rinsed in hot water, rinsed in cold water and dried. 1
• Example 11 The fabric of Example I can be pretreated by immersion in 55 times its weight of a 10% aqueous solution of triethyl phosphate for 300 seconds at about 95 C. After rinsing with water and drying, the fabric can be heat treated as in Example I. If desired, the fabric can be dyed prior to heat treatment.
• Example III Repeating Example II with the substitution of a 10% aqueous solution of triethylene glycol diacetate for the triethyl phosphate produces approximately the same improvements.
• Example IV The process of Example II is repeated except for use of a 10% aqueous solution of ethylene carbonate for the pretreatment.
• Example V A 10% aqueous solution of lactonitrile can be used as the pretre-at ing agent in the process of Example II.
• the process which comprises immersing a filamentary material comprising a lower alkanoic acid ester of cellulose having fewer than about 0.29 free hydroxyl group per .anhydrogl'ucose unit .in an aqueous solution of about 1 to 15% by weight concentration of ethylene carbo-nate for a duration ranging from a time at least suflicient to increase the safe-ironing temperature up to about 1 hour at about 50 to 150 C., the ethylene carbonate being present in about 1 to 50% of the weight of the cellulose ester.

Landscapes

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

Priority Applications (2)

Applications Claiming Priority (1)

Publications (1)

Family

ID=25253122

Family Applications (1)

Country Status (2)

Cited By (1)

Citations (16)

• 0
  • BE BE635262D patent/BE635262A/xx unknown
• 1959
  • 1959-07-23 US US828937A patent/US3206274A/en not_active Expired - Lifetime

Patent Citations (16)

Also Published As

Similar Documents