US3925008A - Method for simultaneously scouring and bleaching materials consisting of textile fibers - Google Patents

Method for simultaneously scouring and bleaching materials consisting of textile fibers Download PDF

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US3925008A
US3925008A US503248A US50324874A US3925008A US 3925008 A US3925008 A US 3925008A US 503248 A US503248 A US 503248A US 50324874 A US50324874 A US 50324874A US 3925008 A US3925008 A US 3925008A
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carbonate
bleaching
scouring
group
aqueous
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Syoso Makino
Kenjiro Hosokawa
Junzi Sano
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Kanebo Ltd
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Kanebo Ltd
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    • 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
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
    • D06L4/17—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen in an inert solvent
    • 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
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
    • D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives

Definitions

  • ABSTRACT Materials consisting of textile fibers are simulta- Forelgll Application y Data neously scoured and bleached in a non-aqueous me- Sept. 13, 1973 Japan 48-103624 dium by the method wherein at least one peroxide bleaching agent and at least one organic carbonate se- [52] US. Cl.
  • the present invention relates to a method for scouring and bleaching materials consisting of textile fibers, more particularly, relates to a method for simultaneously scouring bleaching material consisting of textile fibers in a nonaqueous medium.
  • textile fiber material refers to materials consisting of textile fibers, including loose fibers, spun finber yarns, filament tow, filament yarns, slivers, woven fabrics, knitted fabrics, nonwoven fabrics, threads, strands, ropes, cords and nets.
  • the textile fiber material may consist of either a simple kind of the textile fibers or two or more kinds of the textile fibers.
  • the textile material may consist of cotton, viscose rayon fibers, cuprammonium rayon fibers, polyethylene terephtharate fibers, acrylic fibers, polypropylene fibers or a blend of two or more of the abovementioned fibers.
  • the textile fiber materials are sometimes damaged during the scouring and bleaching processes be cause of the length of time and the high temperature of treatments.
  • the method wherein the textile fiber material is scoured with an organic solvent has the following advantages.
  • the scouring and bleaching can be completed within a short period. This is because the organic solvent, for example, halogenated hydrocarbons, has a low surface tension and can dissolve a large amount of waxy substances existing in the textile fiber material. The low surface tension of the solvent results in quick penetration of the solution into the material and the large dissolving property of the solvent causes quick and large removement of the waxy substance from the material.
  • the organic solvent for example, halogenated hydrocarbons
  • the consumption of heat during the processing is relatively small. This is because the organic solvent has a lower boiling point and a smaller specific heat and latent heat of gasification than those of water.
  • the organic solvent can be recovered and utilized again.
  • the waste from the textile fiber material is concentrated and separated from the organic solvent.
  • the separated waste is treated without pollution.
  • an alkali or amine compound for example sodium hydroxide,.sodium carbonate, magnesium sulfate, sodium pyrophosphate, sodium tripolyphosphate, sodium hexametaphosphate, sodium silicate, ammonia aqueous solution and watersoluble organic amines, may be added into the bleaching emulsion.
  • the addition of the alkali or amine compound causes a low stability of emulsion.
  • the alkali or amine compound sometimes causes decomposition of the organic solvent, especially, halogenated hydrocarbon.
  • the watersoluble bleaching agent and the alkali or amine should be removed by washing with water or hot water. This type of washing frequently causes pollution. That is, the waste water pollutes the surrounding waterways.
  • the object of the present invention is to provide a method for simultaneously. scouring and bleaching materials consisting of textile fibers in a non-aqueous medium, which can be effected in a simple operation'with a high scouring and bleaching efficiency.
  • the method for simultaneously scouring and bleaching materials consisting of textile fibers in a non-aqueous medium comprises the steps of preparing a non-aqueous scouring and bleaching liquid by adding at least one peroxide bleaching agent and at least one organic carbonate selected from a group consisting of alkylene carbonate and hydroxyalkylene carbonate in a ratio by weight of l0 l to 1 5 into a halogenated hydrocarbon solvent, and treating a material consisting of textile fibers with the above-prepared non-aqueous scouring and bleaching liquid.
  • the treatment of the textile fiber material with the non-aqueous scouring and bleaching liquid is carried out in a process wherein the textile fiber material is impregnated with a predetermined amount of the liquid at a temperature lower than 40C, usually, room temperature, the impregnated material is heated with steam at a temperature of 70 to 150C, preferably, 75 to 130C, for 30 to 60 minutes, preferably, 5 to 30 minutes. Thereafter, the material is washed with a washing solvent consisting of a halogenated hydrocarbon, hydrocarbon, alcohol, ketone, ether or a mixture of two or more of the abovementioned compounds. The washing solvent is removed from the material by blowing steam through the material, and, then, if necessary, the material is washed with a small amount of hot water, and dried.
  • a washing solvent consisting of a halogenated hydrocarbon, hydrocarbon, alcohol, ketone, ether or a mixture of two or more of the abovementioned compounds.
  • the textile fiber material can be converted to a scoured and bleached material having excellent whiteness and water-wetting properties with no distribution of foreign matter on the surface thereof. Further, it should be noted that the conversion is carried out with a relatively small decrease of tear or tensile strength of the material.
  • Such special effects of the process of the present invention are derived from the addition of the organic carbonate into the scouring and bleaching liquid composed of a peroxide bleaching agent dissolved, emulsified or dispersed into a halogenated hydrocarbon solvent. The acting mechanism of the organic carbonate has not yet been made clear.
  • the organic carbonate may act as a special activating agent and simultaneously as an appropriate buffering agent for the peroxide bleaching agent in the halogenated hydrocarbon solvent. Accordingly, the method of the present invention has an excellent scouring and bleaching effect which has never been obtained by the conventional method using the emulsion wherein the water-soluble bleaching agent is emulsified in the non-aqueous solvent. Moreover, the scouring and bleaching liquid of the present invention can be easily removed from the textile fiber material by washing with an organic solvent, for example, hydrocarbons and halogenated hydrocarbons, alcohols or ethers.
  • an organic solvent for example, hydrocarbons and halogenated hydrocarbons, alcohols or ethers.
  • the alkali or amine compound mentioned hereinbefore as the activator for the peroxide bleaching agent.
  • Such unnecessity of the basic activator results in a high stability of the scouring and bleaching solution of the present invention over a long period of time. That is, even if the scouring and bleaching solution of the present invention is stored at room temperature for a length of time, the bleaching activity of the peroxide bleaching agent remains constant.
  • the organic carbonate usable for the method of the present invention is easily dissolved in an organic solvent, for example, alcohol solvent, ether solvent, hydrocarbon solvent or halogenated hydrocarbon solvent alone or a mixture of two or more of the above solvents. Accordingly, after the scouring and bleaching process is completed, the residue of the scouring and bleaching solution on the textile fiber material is easily removed by washing with the above-mentioned solvent. Thereafter, the textile fiber material may be further washed with either cold or hot water.
  • the solvent washing can be completed within a short time, for example, 20 seconds to 2 minutes. Compared to this, the conventional aqueous method needs a long time, for example, 5 minutes to minutes, of aqueous washing.
  • the solvent washing By the solvent washing, the waste substances which have been produced during the scouring and bleaching process, the organic carbonate and a surface active agent which may be used if necessary, are dissolved into the washing solvent. These wastes are separated in the form of a solid from the washing solvent when the washing solvent is recovered from the washing waste. From the separated solid waste, the organic carbonate and the surface active agent can be cleansed and used again for the scouring and bleaching process. That is, during the scouring and bleaching process, the organic carbonate and the surface active agent are not decomposed.
  • the recovery of the washing solvent on the textile fiber material is carried out by blowing steam through the material.
  • the textile fiber material which has been washed with the washing solvent and blown with steam may be further washed with a small amount of hot water.
  • the amount of hot water used is very small and the textile fiber material to be washed with hot water holds substantially no or very small amounts of the scouring and bleaching wastes, the waste washing water does not require cleansing by a waste water cleaning process.
  • the peroxide bleaching agents usable for the process of the present invention may be selected from the conventional peroxide bleaching agents, for example, hydrogen peroxide, peracetic acid, perboric acid, potassium persulfate, ammonium persulfate, sodium persulfate and a mixture of two or more of the above-mentioned peroxides.
  • hydrogen peroxide and peracetic acid are pertinent compounds for methods in the present invention.
  • the peroxide bleaching agents may be dissolved, emulsified or dispersed into the halogenated hydrocarbon.
  • the organic carbonates usable for the method of the present invention are selected from the group consisting of alkylene carbonates, preferably, alkylene carbonates wherein the alkylene group has 2 4 carbon atoms, and hydroxyalkylene carbonates, preferably, alkylene carbonates wherein the hydroxy-alkylene group has 2 4 carbon atoms.
  • the alkylene carbonate may be ethylene carbonate, propylene carbonate or butylene carbonate.
  • the hydroxyalkylene carbonate may be either hydroxypropylene carbonate or hydroxybutylene carbonate.
  • the scouring and bleaching liquid for the method of the present invention may contain a surface active agent for emulsifying or dispersing the peroxide bleaching agent.
  • a surface active agent for emulsifying or dispersing the peroxide bleaching agent for the surface active agent conventional types of the surface active agents may be selected, such as, various types of anionic, cationic, non-ionic and amphoteric surface active agents, for example, polyethyleneglycol alkylphenyl ethers, polyethyleneglycol alkyl ethers, polyethyleneglycol-fatty acid esters, sorbitan monoalkylates, polyethyleneglycol alkylamine ethers, alkylbenzene sulfonates, dialkylsulfosuccinates, polyalkyleneglycol alkylphosphates and mixtures of two or more of the above-mentioned surface active agents.
  • the alkyleneglycol alkyl-phosphates or its salts can be beneficially used for the
  • polyalkyleneglycol alkylphosphates are of the formula:
  • R represents a hydrocarbon group
  • R represents ethylene or propylene group
  • n represents an integer from 1 to 200
  • a and A represents hydrogen, lithium, potassium or sodium atom or an ammonium (NH alkylamine or hydroxyalkylamine group.
  • Such a type as the polyalkyleneglycol alkylphosphate may be selected from the class consisting of monoand di- (polyoxyethylenelaurylether)phosphates, monoand di-(polyoxyethylenestearylether)phosphates, monoand di-(polyoxyethylene-p-nonylphenol ether)phos' phates, mono and di-(polyoxypropylene-oleylether)- phosphates, monoand di-(polyoxypropylene-cetylether)phosphates, monoand di-(polyoxypropylene-pnonylether)phosphates, and lithium, potassium, sodium, ammonium, alkylamine and hydroxyalkylamine salts of the above-mentione
  • the peroxide bleaching agent soluble in the halogenated hydrocarbon solvent for example, peracetic acid
  • no surface active agent may be mixed with the scouring and'bleaching liquid.
  • the halogenated hydrocarbon usable for the method of the present invention may be selected from halogenated aliphatic hydrocarbons, for example, trichloroethylene, tetrachloroethylene, trichloromethane, l ,1 ,1- trichloroethane, tetrachloromethane, l,2 dichloroethane, 1,1 -dichloroethane, 1,1 ,Z-trichloroethane, 1,1 ,1 ,2-tetrachloroethane, 1,1 ,2,2tetrachloroethane, l ,2-dichloroethylene, l ,2,3-trichloropropane, l ,2 dichloropropane, n-butyl chloride, n-amyl chloride, dichloropentane, n-hexyl chloride, Z-ethylhexyl chloride, 1,1 ,Z-trichloro
  • the halogenated hydrocarbon is selected considering the type of the peroxide bleaching agent used and the type of the textile fibers to be treated, and treating temperature.
  • the halogenated hydrocarbons having a boiling point of 45 to 140C, preferably, 80 to 130C, for example, trichloroethylene, tetrachloroethylene, l l l -trichloroethane, l,2-difluoro-l,1,2,2- tetrachloroethane are pertinent for the method of the present invention, because some types of the haloge nated hydrocarbons evaporate from the textile fiber material during treatment at a temperature of 70 to 100C.
  • the organic carbonate may be added into the halogenated hydrocarbon at any step.
  • the organic carbonate is dissolved into a portion of the halogenated hydrocarbon and, then, the solution is mixed with the liquid containing the peroxide bleaching agent dissolved, emulsified or dispersed in the halogenated hydrocarbon. This manner of the preparation is simple and rapid in operation.
  • the non-aqueous scouring and bleaching liquid contains the peroxide bleaching agent in-such an amount that the textile fiber material is impregnated with 0.5 to 10% of the peroxide bleaching agent (active ingredient) based on the weight of the textile fiber material. That is, the concentration of the peroxide bleaching agent in the non-aqueous liquid is determined in response to the amount of the non-aqueous liquid to be impregnated by the textile fiber material, the type of the peroxide bleaching agent and, if necessary, the concentration of the active ingredient in the peroxide bleaching agent.
  • the scoured and bleached textile fiber material has low whiteness and wetting properties and a large distribution of the foreign matter is retained on the surface thereof. If the amount of the peroxide bleaching agent applied onto the textile fiber material is larger than 10% based on the weight of the textile fiber material, the scoured and bleached textile fiber material has an undesirably low tensile and tear strength.
  • the ratio by weight of the peroxide bleaching agent to the organic carbonate in the non-aqueous liquid is in a range from 10 1 to l 5. If the ratio is larger than 10 l, the peroxide bleaching agent is insufficiently activated and buffered by the organic carbonate. Even if the ratio is smaller than 1 5, the bleaching effect of the non-aqueous liquid does not increase or sometimes, tends to decrease the whiteness and tensile or tear strength, and the cost of the non-aqueous liquid increases.
  • the ratio is in a range from 5 l to l 3.
  • the non-aqueous scouring and bleaching liquid of the present invention may contain the surface active agent in an amount of 0.1 to 7%, preferably, 0.2 to 4% by weight.
  • the non-aqueous scouring and bleaching liquid of the present invention is applied onto the textile fiber material by conventional methods.
  • the material is immersed into the liquid and squeezed by way of mangle or centrifuge so that the peroxide bleaching agent is held in an amount of 0.5 to 10% based on the weight of the material, in the material.
  • the liquid may be applied onto the material by way of spraying, brushing, or roller coating.
  • the impregnated material is charged into a closed chamber or vessel and heated with steam at a temperature of to 150C, preferably, to C, for 3 to 60 minutes, preferably, 5 to 30 minutes.
  • the material is sufficiently scoured and bleached, the peroxide bleaching agent is decomposed and the decomposition products, for example, water or acetic acid, and the halogenated hydrocarbon are evaporated.
  • the evaporated halogenated hydrocarbon is collected, purified and recovered.
  • the scoured and bleached material is charged into a closed chamber or vessel and washed with a washing solvent consisting of a halogenated hydrocarbon, hydrocarbon, alcohol, ketone or ether or a mixture of two or more of the above-mentioned solvents, at room temperature.
  • a washing solvent consisting of a halogenated hydrocarbon, hydrocarbon, alcohol, ketone or ether or a mixture of two or more of the above-mentioned solvents
  • the halogenated hydrocarbon washing solvents may be the same as the halogenated hydrocarbon usable as solvent for the scouring and bleaching liquid of the present invention.
  • the hydrocarbon washing solvent may be selected from the group consisting of n-hexane, isohexane, n-heptane, n-octane, iso-octane, n-decane, 2,2- dimethyl butane, petroleum ether, petroleum benzine, ligroin, gasoline, kerorine, petroleum naphtha, cyclohexane, methylcyclohexane, benzene, toluene, xylene, ethyl benzene, coal-tar naphtha, solvent naphtha and mixtures of two or more of the abovementioned solvents.
  • the alcohol washing solvent may be methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, sec-butanol, tert-butanol, n--amyl alcohol, isoamyl alcohol, n-hexanol or methyl amyl alcohol.
  • the ketone washing solvent may be acetone, methyl ethyl ketone, methyl-n-propyl ketone, methyl-n-buty] ketone, methylisobutyl ketone, diethyl ketone, acetone oils, mesityl oxide, or cyclohexanone.
  • the ether washing solvent may be sym-dichloroether, isopropyl ether, n-butyl ether, methylphenyl ether, 1,4-dioxane, trioxane, furan or furfural.
  • the washed material is charged into a closed chamber or vessel, and steam is blown onto the material at a temperature from 80 to l 10C to evaporate the washing solvent. During the steam blowing period, the washing solvent is removed from the material. Thereafter, the material is dried, and the washing solvent is collected and recovered. After the steam blowing is finished, the material is charged into a closed chamber or vessel and further washed with a small amount of hot water to remove the scouring and bleaching products and the washing solvent from the material, if necessary.
  • the heating step, the solvent washing step, the steam blowing step and the hot water washing step are respectively carried out within a closed chamber or vessel. This is effective for avoiding pollution of the atmosphere and recovering the solvents.
  • the waste washing solvent is collected and distilled to separate the solvent from the solid mixture of the organic carbonate, the surface active agent and the scouring and bleaching product.
  • the distilled solvent is recovered.
  • the organic carbonate and the surface active agent are respectively separated from the distillation residue, cleaned up and recovered.
  • the scouring and bleaching product are collected as a solid waste from the distillation residue.
  • the method of the present invention has the following advantages.
  • the resultant scoured and bleached textile fiber material has excellent whiteness and wetting properties and no distribution of foreign matter on the material surface.
  • the non-aqueous scouring and bleaching liquid has a high stability for scouring and bleaching.
  • Whiteness of fabric The whiteness of the simultaneously scoured and bleached fabric was determined by a method wherein 10 pieces of specimens were prepared by cutting the fabric were subjected to measurement fo their reflectivity at a wave length of 450 mp. using a spectrophotometer. The whiteness of the fabric was indicated by an average of the ratios in percent of the measured reflectivities for the specimens to that of a standard plate consisting of magnesium oxide. 2. Thoroughness of simultaneous scouring and bleaching The thoroughness (completeness) of the simultaneous scouring and bleaching for cotton fabric was evaluated by human observation concerning distribution of foreign matter such as leaves or other refuse, located on the cotton fabric surface, and classified as remarkable", less remarkable and not remarkable in distribution of the foreign matter. 3.
  • the wetting property of the simultaneously scoured and bleached fabric was evaluated by a method wherein 10 pieces of specimens having a 2 cm width and a 20 cm length were prepared from the simultaneously scoured and bleached fabric, one end of each of the specimens was dipped in a length of 2.5 cm from the end thereof into an aqueous solution containing 0.5% of Patent Pure Blue V (C. I. Acid Blue No. l, C. I. No. 42045) for 10 minutes so as to allow penetration of the dye solution upward into the specimen.
  • Patent Pure Blue V C. I. Acid Blue No. l, C. I. No. 42045
  • Tear strength of fabric The tear strength of the simultaneously scoured and bleached fabric was determined in accordance with ASTM: D 1424-63 using a Falling-Pendulum (Elemendorf) tear tester, and indicated by an average value of results for 10 pieces of specimens.
  • Example 1 a cotton broad cloth composed of 120 warps and 65 wefts per inch, both the warp and weft consisting of a cotton single yarn of a cotton count of 40s, was singed and desized by an ordinary method.
  • a non aqueous scouring and bleaching solution was prepared by dissolving 0.5 parts of ethylene carbonate and 5 parts of a surface active agent consisting of a salt of di-polyoxyethylene-y-nonylphenylether phosphate wherein the polyoxyethylene group consists of 15 oxyethylene units, with B-aminoethylalcohol in 89.5 parts of trichloroethylene and, then, adding 5 parts of peracetic acid into the solution while stirring.
  • the abovedesized cotton fabric was dipped into the non-aqueous scouring and bleaching solution at a temperature not higher than 40C, squeezed by a mangle so that the cloth was impregnated with 120% of the non-aqueous solution based on the weight of the cloth, and, then, treated in trichloroethylene vapor atmosphere at a temperature of i2C for 10 minutes. Thereafter, the treated fabric was washed in a washing vessel containing a mixture solvent of 50% of trichloroethylene and 50% of methyl alcohol, rinsed with a small amount of hot water at a temperature of C and dried at a temperature of C.
  • the resultant fabric was subjected to the measurements for whiteness of the fabric, thoroughness of the simultaneous scouring and bleaching, and wetting properties and tearing strength of the fabric. The results of the measurement are indicated in Table 1.
  • Example 2 the same procedures as in Example 1 were repeated except that the non-aqueous scouring and bleaching solutions have the compositions the present invention method. The results are shown in Table I.
  • Example 8 THROUGH 14
  • Example 8 the same procedures as in Example I were repeated using 5 parts of hydrogen peroxide instead of peracetic acid. The results are indicated in Table 2.
  • Example 9 through 14 the same operations as in Example 8 were carried out by using the non-aqueous Table 1
  • Example Compa- Example Compa- Original rison rative Fabric Example (Control) Item I I 2 3 4 5 6 7 2 Surface Active 5 5 5 5 5 5 5 5 5 5 5 5 5 5 5
  • Agent Part
  • Acid Part
  • Table I shows that the ratio in weight of peracetic acid to ethylene carbonate smaller than I 5, results in a low whiteness and wetness in the scoured and bleached fabric and a remarkable distribution of foreign matter on the fabric surface.
  • perscouring and bleaching solutions having the compositions indicated in Table 2.
  • Example 16 and 17 the same procedures as in Example 15 were repeated respectively using the nonaqueous scouring bleaching solutions having the compositions as shown in Table 3.
  • the solution for Examples 16 and 17 contained respectively 2 parts and 4 parts of surface active agent consisting of a sodium salt of mono (polyoxyethylenelaurylether) phosphate wherein the polyoxyethylene group consists of 6 oxyethylene units.
  • the scoured and bleached fabrics of Examples 16 and 17 had properties indicated in Table 3.
  • Comparison Examples 5 and 6 the same procedure as in Comparison Examples 1 and 3 were respectively repeated using the non-aqueous scouring and bleaching solutions which have been kept in storage for 24 hours from the completion of the solution preparation.
  • the properties of the scoured and bleached fabric are found in Table 4.
  • Example 20 THROUGH 23
  • Example 20 the same procedures as in Example were carried out except that the same cotton fabric as in Example 1 was used instead of the cottonpolyethylene terephthalate fiber fabric in Example 15.
  • Example 21 the same operations as in Examples were repeated except that the non-aqueous scouring and bleaching solution was applied to the cotton fabric 24 hours after completion of the solution preparation.
  • Example 22 the same procedures as in Example 16 were repeated except that the same cotton fabric as in Example 1 was scoured and bleached.
  • Example 23 the same operations as in Example 22 were carried out except that the non-aqueous scouring and bleaching solution was used after being kept in storage for 24 hours from preparation completion.
  • the properties of the treated fabrics are indicated in Table 5.
  • a method as claimed in claim 1, wherein said treating is carried out by impregnating said material with said non-aqueous scouring and bleaching liquid and heating said impregnated material with steam at a temperature of to C for 3 to 60 minutes.
  • peroxide bleaching agent is selected from the group consisting of hydrogen peroxide, peracetic acid, perboric acid, potassium persulfate, ammonium persulfate, sodium persulfate and mixtures of two or more of the above-mentioned peroxides.
  • alkylene carbonate is selected from alkylene carbonates wherein the alkylene group has 2 to 4 carbon atoms.
  • alkylene carbonate having the alkylene group of 2 to 4 carbon atoms is selected from the group consisting of ethylene carbonate, propylene carbonate and butylene carbonate.
  • hydroxyalkylene carbonate is selected from hydroxyalkylene carbonate wherein the hydroxyalkylene group has 2 to 4 carbon atoms.
  • hydroxyalkylene carbonate having the hydroxyalkylene group of 2 to 4 carbon atoms is either hydroxypropylene carbonate or hydroxybutylene carbonate.
  • halogenated hydrocarbon solvent is selected from the group consisting of halogenated aliphatic hydrocarbons, halogenated aromatic hydrocarbons and mixtures of two or more of the abovementioned compounds.
  • said halogenated aliphatic hydrocarbon is selected from the group consisting of trichloroethylene, tetrachloroethylene, trichloromethane, 1,l,l,-trichloroethane, tetrachloromethane, l,2-dichloroethan e, 1,1-dichloroethane, 1,1,2-trichloroethane, 1,1 ,1 ,2-tetrachloroethane, l ,1 ,2,2-tetrachloroethane, 1,2-dichloroethylene, 1,2,3-trichloropropane, 1,2-dichloropropane, nbutyl chloride, n-amyl chloride, dichloropentane, nbutyl chloride, 2-ethylhexyl chloride, 1,1,2-trichloro- 1,2,2-trifl uoroethane and 1 ,2-difluoro-
  • halogenated aromatic hydrocarbon is selected from the group consisting of monochlorobenzene, O-chlorobenzene, 1,2,4-trichlorobenzene, O-chlorotoluene, bromobenzene, p-chlorotoluene, a-chloronaphthalene, and chlorinated naphthalene.
  • polyalkyleneglycol alkylphosphate is selected from the group consisting of monoand di-(polyoxyethylenelaurylether)-phosphates, monoand di-(polyoxyethylenestearylether)-phosphates, monoand di- (polyoxyethylene-p-nonylphenolether)-phosphates, monoand di-(polyoxypropylene-cetylether)phospates, monoand di-(polyoxypropylene-p-nonylether)- phosphates and lithium, potassium. sodium, ammonium, alkylamine and hydroxyalkylamine salts of the above-mentioned monoand di-phosphates and mixtures of two or more of the abovestated compounds.
  • heating temperature for said impregnated material is in a range from to 130C.

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FR2552124A1 (fr) * 1983-09-20 1985-03-22 Ugine Kuhlmann Nouvelles formulations fluides pour bains alcalins de blanchiment textile stables au stockage et leur procede d'obtention
US4734098A (en) * 1985-11-22 1988-03-29 Crucible Chemical Company Method for bleaching cotton
US4746322A (en) * 1984-04-09 1988-05-24 Repligen Corporation Hair dye composition and process for using the same
US5098593A (en) * 1990-12-07 1992-03-24 Occidental Chemical Corporation Mixtures of perchloroethylene and monochlorotoluene
US5962699A (en) * 1998-07-23 1999-10-05 Huntsman Petrochemical Corporation Process for decolorizing organic carbonates
US6040284A (en) * 1997-05-23 2000-03-21 Huntsman Petrochemical Corporation Paint coatings remover comprising propylene carbonate and hydrogen peroxide
US6159915A (en) * 1999-06-18 2000-12-12 Huntsman Petrochemical Corporation Paint and coating remover
US6169061B1 (en) 1997-05-23 2001-01-02 Huntsman Petrochemical Corporation Paint and coating remover
US6239090B1 (en) * 1997-05-23 2001-05-29 Huntsman Petrochemical Corporation Thickened paint and coating remover
US6395103B1 (en) 1997-05-23 2002-05-28 Huntsman Petrochemical Corporation Degreasing compositions
US6475708B2 (en) * 2000-06-29 2002-11-05 Huntsman Petrochemical Corporation Alternative photoresist stripping solutions
US6479445B1 (en) 1997-05-23 2002-11-12 Huntsman Petrochemical Corporation Paint stripping compositions
US6548464B1 (en) 2000-11-28 2003-04-15 Huntsman Petrochemical Corporation Paint stripper for aircraft and other multicoat systems

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US4013575A (en) * 1975-11-28 1977-03-22 Fmc Corporation Dry cleaning with peracids
FR2552124A1 (fr) * 1983-09-20 1985-03-22 Ugine Kuhlmann Nouvelles formulations fluides pour bains alcalins de blanchiment textile stables au stockage et leur procede d'obtention
EP0141759A1 (fr) * 1983-09-20 1985-05-15 Elf Atochem S.A. Formulations fluides détergentes à action blanchissante pour textiles stables au stockage et leur procédé d'obtention
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US4746322A (en) * 1984-04-09 1988-05-24 Repligen Corporation Hair dye composition and process for using the same
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US5098593A (en) * 1990-12-07 1992-03-24 Occidental Chemical Corporation Mixtures of perchloroethylene and monochlorotoluene
US6169061B1 (en) 1997-05-23 2001-01-02 Huntsman Petrochemical Corporation Paint and coating remover
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US6833345B2 (en) 1997-05-23 2004-12-21 Huntsman Petrochemical Corporation Degreasing compositions
US6833341B2 (en) 1997-05-23 2004-12-21 Huntsman Petrochemical Corporation Paint stripping compositions
US6239090B1 (en) * 1997-05-23 2001-05-29 Huntsman Petrochemical Corporation Thickened paint and coating remover
US6395103B1 (en) 1997-05-23 2002-05-28 Huntsman Petrochemical Corporation Degreasing compositions
US20020111284A1 (en) * 1997-05-23 2002-08-15 Huntsman Petrochemical Corporation Degreasing compositions
US6586380B2 (en) 1997-05-23 2003-07-01 Huntsman Petrochemical Corporation Paint and coating remover
US6479445B1 (en) 1997-05-23 2002-11-12 Huntsman Petrochemical Corporation Paint stripping compositions
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US5962699A (en) * 1998-07-23 1999-10-05 Huntsman Petrochemical Corporation Process for decolorizing organic carbonates
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Also Published As

Publication number Publication date
JPS5133229B2 (xx) 1976-09-18
GB1483528A (en) 1977-08-24
JPS5053667A (xx) 1975-05-12

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