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
  • 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
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/26—Organic compounds containing nitrogen
  • C11D3/30—Amines; Substituted amines ; Quaternized amines
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
  • C11D3/16—Organic compounds
  • C11D3/36—Organic compounds containing phosphorus
  • C11D3/364—Organic compounds containing phosphorus containing nitrogen
• • C—CHEMISTRY; METALLURGY
  • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
  • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
  • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
  • C11D7/02—Inorganic compounds
  • C11D7/04—Water-soluble compounds
  • C11D7/06—Hydroxides
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
  • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
  • D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
  • D06L1/00—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods
  • D06L1/12—Dry-cleaning or washing fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods using aqueous solvents
  • D06L1/14—De-sizing

Definitions

• This process provides fibers with a substan- [56] References Cited tially reduced impurity level and an end product which is substantially more conducive to subsequent bleaching and dyeing UNITED STATES PATENTS Processes- 3,234,l24 2/1966 Irani ..8/l39 4 Claims, N0 Drawings PROCESSES FOR SCOURING TEXTILES
• the present invention relates to an improved process for bleaching and dyeing textile materials. Specifically, this invention is concerned with scouring materials with a composition containing a novel synergistic mixture which functions as an inhibiting agent for the prevention of the precipitation of iron (hydroxides) and alkaline earth metal salts such as calcium carbonate.
• scouring is the third major step in the abovedescribed textile-finishing process.
• the purpose of the scouring step is to remove foreign matter left on the textile material after desizing.
• the scouring process is desirable in order to attempt to remove impurities or foreign matterand thus ultimately prepare a whiteness in color" product suitable for subsequent bleaching and dyeing and effecting a uniformity of color thereon.
• commercial scouring (including boiling) processes involve contacting the textile material with alkaline aqueous solution (bath) containing a caustic material such as sodium hydroxide and a synthetic organic surfactant.
• one of the impurities is iron, either in the ferric or ferrous state, but generally the former.
• a synergistic inhibiting agent which is a mixture of an amino tri(lower alkylidene phosphonate) and an amino alcohol (hereinafter defined) in the aqueous alkaline scouring bath in addition to the caustic material and surfactant.
• the amino tri(lower alkylidene phosphonates) have the general formula:
• X and Y represent hydrogen or a lower alkyl containing, for example, from one to four carbon atoms and R is from the group hydrogen and cations which are capable of forming water-soluble salts.
• Compounds illustrative of the acids are amino tri(methylene phosphonic acid) (herein referred to as ATMP). amino tri(ethylidene phosphonic acid), and amino tri(isopropylidene phosphonic acid).
• the water-soluble salts (where R is a metal cation such as sodium) are also included within the scope of the present invention.
• the preferred salts are the sodium salts, particularly the pentasodium salt.
• Other alkali metal salts such as potassium, lithium andthe like, as well as mixtures of the alkali metal salts may be used.
• any water-soluble salt such as the ammonium salt, e.g.,
• the amino alcohols which have been found to exhibit synergism (when used with the above-described phosphonic acids or salts) in this invention include mono-, diand triethanolamine (herein referred to as TEA); mono-, diand monoand diisobutanolamine; butanolamine; dibutyl amino ethyl alcohol; dibutyl amino propyl alcohol; dibutyl amino isopropyl alcohol; bis( 2-hydroxyethyl) butyl amine; butyl ethyl 2,2 dihydroxy amine; dibutyl ethyl 2,2',2"trihydroxy amine; bis(2-hydroxyethyl) methyl amine and dipropyl ethyl 2,2',2 trihydroxy amine.
• TEA mono-, diand triethanolamine
• TEA mono-, diand monoand diisobutanolamine
• butanolamine dibutyl amino ethyl alcohol
• said'synergistic inhibiting agent based on .the total weight of the aqueous solution which contains the caustic, surfactant, said inhibiting agent, and water. It is to beunderstood that the amount of inhibiting agent necessary depends upon the level of iron and (e.g.) calcium contamination of the scouring bath. However, the general usage of the above-mentioned inhibiting agent indicates a practical upper limit is about 2.0 percent by weight. The preferred range is from about 0.1 percent to about 0.5 percent.
• the inhibiting agent is a mixture of the above-mentioned phosphonates and the amino alcohol.
• the weight ratio of said phosphonate to said amino alcohol is from about 0.5:] to about 4:1, preferably from about 0.75:1 to about 1.5: 1.
• textile materialas used herein includes any natural and/or synthetic fibrous base material such as cotton, nylon, viscose rayon, Dacron, polyester, hemp, linen, jute, and blends thereof such as, for example, cotton-Dacron, cotton-Dacron-viscose rayon, cottonnylon-viscose rayon, cotton-Dacron-nylon, cotton-nylon, and cotton-polyester (all in various weight ratios).
• the specific synthetic organic surfactant can be any of a wide variety of surface active agents. Typical surfactants are described in U.S. Pat. No. 2,846,398 and U.S. Pat. No. 3,159,581, both of which are incorporated herein by 'reference. Furthermore, other publications which describe surfactants which can be used in the present invention processes include Schwartz and Perry, Surface Active Agents," lnterscience Publishers, New York (1949) and The Journal of American Oil Chemists Society, Vol. 34, No. 4, pages -216 (Apr., 1957), both of which publications are incorporated herein by reference. The amount of surfactant will vary, depending upon various process conditions and any amount can be used as long as no substantial adverse effect is incurred in the scouring operation.
• the most common material presently used in the scouring bath to render it an alkaline solution with a pH above 7 is sodium hydroxide. It is to be understood that any caustic material can be used in order to effect a pl-iabove 7.
• the amounts of caustic material, e.g'., NaOH, used in the scouring bath will vary depending upon the temperature, desired pH, (sometimes) textile material to be treated, and the like. in general, the amounts of caustic used are from about 1 percent to about 4 percent by weight based on the total weight of the alkaline aqueous solution.
• the temperature of the bath is desirable in the range of from about 7 2F. to the boiling point of the scouring solution but temperatures'from about [40 F. to' about 210 F. are preferred. it is to be understood that higher temperatures, such as 250 F. to 300 F., can be used (with the aid of superatmospheric pressure) where one so desires.
• Example IV The purpose of this Example IV was to ascertain to a higher degree the staining, if any, of bleached cotton fabric by iron (from iron precipitates) which might not be as easily detectable on unbleached cotton fabric.
• the degree of staining is set forth in terms of "fabric whiteness” as determined by a Gardner Automatic Color Difference Meter made by Gardner Laboratory, lnc., Bethesda, Maryland.
• Thefabric whiteness" numbers shown in Table ll were determined relative to a standard (MgO filter being equal to 100) which was as close to perfect whiteness as is possible.
• the results of this Example IV are set forth in Table II.
• ATMP:TEA active basis
• ATMP:'IEA active basis
• ATMP:'IEA active basis
• wt. ra 0 l flssloiution of ATMP and TEA
• ATMPzTEA active basis
• Example I above is repeated again with the sole exception that butanolamine is substituted for triethanolamine (TEA). Substantially the same results as those disclosed in Table I are obtained. 7 EXAMPLE lll Example I above is individually repeated two times with the 70 sole exception that the specific water used contained respectively 3 p.p.m. Fe and 20 p.p.m. Fe instead of the water. used in Example I which contained 10 p.p.m. Fe Substantially the same results as those disclosed in Table l are obtained.
• the unique inhibiting agents of the present invention exhibit a synergistic effect and are substantially better than either the phosphonate per se or the amino alcohol per se.
• the fabric had a whiteness number of 65; with only ATMP the value was 72 and with only TEA, the value was 80.
• the average value was 89, a significant difference. The superiority of these novel inhibiting agents is thus seen.
• an inhibiting agent consisting of an amino tri(lwer alkylidene phosphonate) having the formula tyl amino propyl alcohol; dibutyl amino isopropyl alcohol; bis(2hydroxyethyl) butyl amine; butyl cthyl 2,2 dihydroxy amine; dibutyl ethyl 2,2',2 trihydroxy amine; bis(2-hydroxyethyl) methyl amine; dipropyl ethyl 2,2,2" trihydroxy amine; and mixtures thereof; the weight ratio of said phosphonate to said alcohol being from about 0.5:l to about 4:1.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Oil, Petroleum & Natural Gas (AREA)
• Wood Science & Technology (AREA)
• Organic Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Coloring (AREA)
• Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)

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Family Applications (1)

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Cited By (4)

Citations (3)

• 1970
  • 1970-03-03 US US16244A patent/US3645670A/en not_active Expired - Lifetime
• 1971
  • 1971-03-02 BE BE763658A patent/BE763658A/xx not_active IP Right Cessation
  • 1971-03-02 FR FR7107131A patent/FR2084081A5/fr not_active Expired
  • 1971-03-02 JP JP1041771A patent/JPS5514194B1/ja active Pending
  • 1971-04-19 GB GB2294471A patent/GB1338661A/en not_active Expired

Patent Citations (3)

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