Classifications

• • 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
  • D06M16/00—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
  • D06M16/003—Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic with enzymes or microorganisms
• • 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
  • 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
• • 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
  • D06L4/40—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using enzymes
• • 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
  • D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
  • D06M2101/02—Natural fibres, other than mineral fibres
  • D06M2101/04—Vegetal fibres
  • D06M2101/06—Vegetal fibres cellulosic

Definitions

• the present invention relates to an exhaust process for treating non-dyed textile, which comprises treating said non-dyed textile with
• the present invention further relates to an aqueous mixture useful for carrying out the process of the present invention and also to treated textile obtainable by the process of the present invention.
• Non-dyed textiles in particular those from cellulose fibers, are usually treated before dying to remove dirt, undesired contaminations and soil. Said process is also known as scouring, alkaline extraction, alkaline boiling off, and kier-boiling.
• non-dyed textiles from cellulose fibers also termed gray good, can be treated in a way that small fibrils of the fibers are removed. Said process is also known as polishing.
• bioscouring preferably cellulase or pectinase enzymes or combinations of cellulase and pectinase enzymes are used in high-temperature short-time processes, see, e.g., WO 99/32708 .
• the process disclosed in WO 99/32708 yields, however, textiles from cellulose fibers that have an unfavorable grip. Also, the fabric strength can be affected negatively.
• the present invention accordingly provides an exhaust process for treating non-dyed textile, which comprises treating said non-dyed textile with
• Textile for the purposes of the present invention refers to linear or two-dimensional structures such as textile fibers including staple fibers, twine, filaments, rovings, spun yarns, lines, strings, cordage, threads, furthermore to knitted goods and fabrics. Textiles can be of natural origin, examples being flax, linen, ramie, hemp or coir or especially cotton, or synthetic, examples being regenerated cellulose such as for example cuprammonium silk, viscose or cellulose acetates such as acetate and triacetate. Blends are also useful, examples being cotton-polyester blends.
• a textile for the purpose of the present invention may be present as staple fiber, in the form of filaments or as staple fiber yarn or in particular as knitted good or fabric.
• Textile in a preferred embodiment of the present invention refers to knitted goods or fabrics composed of cellulose fiber like, e.g. cotton, or polyester-cotton blends.
• Textile used as starting material in the context of the present invention is non-dyed and preferably non-bleached.
• the process of the present invention is an exhaust process which includes semi-continuous and in particular batch processes.
• Cellulase (a1) generally refer to enzymes that are able to hydrolyze cellulose, e.g., endo- ⁇ -1,4-D-glucan-4-glucanohydrolase, (EC 3.2.1.4).
• cellulase (a1) in the context of the present invention refers to enzyme systems, preferably to synergistically active enzyme systems comprising at least one (a1-1) endoglucanase, at least one (a1-2) cellobiohydrolase, and at least one (a1-3) ⁇ -glucosidase.
• Cellulase (a1) can refer to natural and/or modified enzymes.
• Endoglucanases (a1-1) (endo- ⁇ -1,4-D-glucan-4-glucanohydrolase, (EC 3.2.1.4)) are usually inactive towards crystalline cellulose but they are able to hydrolyze amorphous and water-soluble cellulose derivatives, e.g., carboxymethyl cellulose. Endoglucanases (a1-1) usually cause a random breach of ⁇ -glucosidic bonds.
• Cellobiohydrolases (a1-2) (1,4- ⁇ -D-glucan cellobiohydrolase (EC 3.2.1.91)) usually hydrolyze amorphous cellulose by breaking ⁇ -glucosidic bonds in a regular way, starting from the non-reducing terminus of the respective cellulose and cleaving of cellobiose units.
• ⁇ -Glucosidases (a1-3) (EC 3.2.1.21) catalyze the cleavage of cellobiose and cellooligosaccharides, starting from the non-reducing terminus of the respective cellobiose or cellooligosaccharide.
• Pectinase (a2) can refer to natural and/or modified enzymes.
• Pectinase (a2) can catalyze random hydrolysis of 1,4- ⁇ -D-galactosiduronic linkages in galacturonans
• Example for (a2) pectinase are poly(1,4- ⁇ -D-galacturonide) glycanohydrolase (EC 3.2.1.15).
• Aforementioned enzymes can be stored advantageously in diluted form, e.g. as aqueous solutions, or further diluted with aqueous NaCl solution or reduced carbohydrates such as, e.g. sorbitol.
• diluting agent such as NaCl or sorbitol need not be removed before starting the inventive process.
• Enzymes such as cellulase (a1) or pectinase (a2) can be incubated before utilized in the inventive process by, e.g. incubating at a temperature of 35°C. It is preferred, though, to neither incubate cellulase (a1) nor pectinase (a2) before utilization in the inventive process.
• At least one cellulase (a1) has an activity in the range from 5 to 20,000 u/mg, preferably in the range from 100 to 12,000 u/mg.
• the enzyme activity of cellulase (a1) is usually defined as follows: 1 u/mg releases 1 ⁇ mol of glucose from cellulose at 35°C and a pH value of 5 per hour per mg solid, determined after an incubation period of 2 hours.
• At least one pectinase (a2) has an activity in the range from 5 to 20,000 u/mg, preferably in the range from 500 to 10,000 u/mg.
• the enzyme activity of pectinase (a2) is usually defined as follows: 1 u catalyzes the liberation of 1 ⁇ mol reducing groups from polygalacturonic acid per minute at a pH value of 4.5 and a temperature of 25°C with D-galacturonic acid as reference.
• the total amount of enzyme applied is in the range of 0.1 to 2% by weight, referring to textile to be treated and independently of the liquor ratio, preferably in the range from 0.5 to 1.5 % by weight and more preferably 0.8 to 1.2 % by weight.
• At least one additional active ingredient (b) is applied, selected from wetting agents, non-ionic surfactants, and defoamers.
• all active ingredients (b) applied in the inventive process are non-ionic.
• Preferred wetting agents include tri-C 1 -C 6 -alkyl substituted phosphates and phosphonates such as triisobutyl phosphate, triisobutyl phosphonate, particul and mixtures of tri-C 1 -C 6 -alkyl substituted phosphates and/or phosphonates and their respective mono- and/or disubstituted derivatives.
• Non-ionic surfactants include, e.g., alcohol ethoxylates, in particular fatty alcohol ethoxylates and oxoalcohol ethoxylates obtained by reacting a C 8 -C 40 fatty alcohol with, e.g., in the range from 3 to 80 equivalents of ethylene oxide, and ethoxylated mono-, di- and tri- C 4 -C 12 -alkylphenols obtainable by reacting the respective mono-, di- and tri- C 4 -C 12 -alkylphenol with 3 to 50 equivalents of ethylene oxide.
• Further suitable non-ionic surfactants are alkylpolyglycosides.
• Defoamers include, e.g., polysiloxanes.
• Particularly preferred defoamers include polysiloxanes (silicones) that can be ethoxylated such as silicones of general formulae la and lb [(CH 3 ) 3 Si-O- ⁇ (Si(CH 3 ) 2 O ⁇ a ][(CH 3 ) 3 Si-O- ⁇ (Si(CH 3 ) 2 O ⁇ b ]-Si(CH 3 )-O-(CH 2 ) f -O(CH 2 CH 2 O) d -H Ia [(CH 3 ) 3 Si-O] 2 -Si(CH 3 )-O-(CH 2 ) 3 -O(CH 2 CH 2 O) d -H Ib
• Suitable active ingredients (b) can be sequestrants. Examples for sequestrants are being described below. It is preferred, though, to not apply sequestrants together with enzymes (a1) and (a2).
• Suitable active ingredients (b) can be reducing agents such as, e.g., Na 2 SO 3 , NaHSO 3 , Na 2 S 2 O 4 , and HO-CH 2 -SO 2 Na.
• Further suitable reducing agents are selected from agents of general formula II a, II b and II c N(CH 2 SO 2 M) 3 IIa N(CH 2 SO 2 M) 2 (CH 2 SO 3 M) IIb N(CH 2 SO 2 M)(CH 2 SO 3 M) 2 IIc
• M being identical or different and selected from hydrogen and alkali metal, in particular sodium.
• active ingredient (b) or a total of 0.01 to 10% of active ingredients in each case referring to the amount of textile to be treated, can be applied.
• the process of the present invention is carried out using water that can be but need not be demineralized. It is preferred, though, to use water with a considerable Ca 2+ and/or Mg 2+ ion content. It is well possible to use water with a German hardness in the range from 4 to 25° dH.
• the inventive process will be performed at a temperature in the range from 45°C to 65°C and preferably in the range from 53 to 58°C.
• the inventive process will be performed at a pH value in the range of 5 to 10, preferably in the range from 5.5 to 9, more preferably to 8 and even more preferably in the range from 6.0 to 7.5.
• the inventive process will be performed over a period of time in the range from 15 minutes to 2 hours, preferably in the range from 20 minutes to 75 minutes.
• the inventive process can be carried out in commonly used textile dyeing machines and apparatuses such as vats, vessels, jet machines, overflows, beam and yarn beam dyeing machines, or jigger machines (jiggers) that repeatedly pull textile through the same bath.
• Suitable machines are described, e.g., in Ullmann's Encyclopedia of Industrial Chemistry, 6th edition, Wiley VCH, Vol. 36 , key word: Textile Dyeing, in particular pages 147 and 149-154.
• the inventive process will be performed a an exhaust process with a long relation bath, e.g. with a liquor ratio in the range from 1:5 to 1:20, preferably from 1:7 to 1:15.
• the inventive process is carried out in the presence of
• Suitable bleaching agents are, e.g., sodium hypochlorite (chlorine bleach), and peroxides such as hydrogen peroxide.
• bleaching agent (c) will be added in an amount in the range from 0.01 to 10% by weight, referring to textile to be treated, preferably in an amount in the range from 0.05 to 8 % by weight.
• bleach stabilizers can be added.
• non-dyed textile treated according to the inventive process can be rinsed with, e.g., water after the treatment with (a) at least two enzymes and (b) at least one additional active ingredient.
• excess bleaching agent will be deactivated.
• Suitable means of deactivation are, e.g., adding reducing agents such any of the reducing agents described above.
• treated non-dyed textile preferably from cellulose fiber can be further processed such as, e.g., dyed, washed, and - if desired - customized.
• cellulase (a1) and pectinase (a2) will be deactivated at the end of the inventive process.
• Suitable means of deactivation are, e.g., heating, adding anionic reagents such as sequestrants, adding NaOH up to of 10, pH value and adding catalase of any activity, and combinations of the aforementioned means of deactivation.
• Heating may include, e.g., raising the temperature to 90 to 105°C over a period of at least 5 minutes, preferably over a period of at least 10 minutes and more preferably over a period in the range from 15 minutes to 30 minutes.
• Sequestrants include complexing agents that can complex metal cations, in particular alkaline earth metal cations such as Ca 2+ and Mg 2+ . Sequestrants can be of inorganic or organic nature.
• sequestrants are polyphosphates, alumosilicates, silicates, aminopolyphosphonates, polycarboxylates such as polyacrylic acid and copolymers, in particular random of acrylic acid and maleic acid, fatty acids, and in particular zeolites, aminopolycarboxylic acids such as nitrilotriacetic acid (NTA), methylglycinediacetic acid (Trilon M), ethylene diamine tetraacetate (EDTA), ethylene diamine tetramethylene phosphonic acid, diethylene triamine pentaacetic acid (DTPA), and the respective salts of the aforementioned aminopolycarboxylic acids such as the potassium salts and sodium salts,
• NTA nitrilotriacetic acid
• Trilon M methylglycinediacetic acid
• EDTA ethylene diamine tetraacetate
• DTPA diethylene triamine pentaacetic acid
• Polyglyoxylic acids Polyglyoxylic acids, polyamidocarboxylic acids, polyasparatic acid, gluconic acid, polycondensation products of aspartic acid with one or more further amino acids, C 4- C 25 -mono- or -dicarboxylic acids and/or C 4 -C 25 -mono- or -diamines.
• enough sequestrant can be added to lower the hardness of the liquor to 0 to 2 °dH (German hardness)
• Another aspect of the present reaction is an aqueous liquor, comprising
• inventive aqueous liquors comprise in the range from 0.01 to 2%, preferably 0.025 to 1.5, more preferably 0.03 to 1.2 % by weight (a1) in the range from 0.01 to 2%, preferably 0.025 to 1.5, more preferably 0.03 to 1.2 % by weight (a2) in the range of from 0.01 to 5%, preferably 0.025 to 2 by weight (b), percentages being based on the total weight of the respective inventive liquor.
• the above-described treatment process of the present invention may be carried out for example by applying an inventive aqueous liquor.
• Aqueous liquors according to the present invention are preparable for example by mixing components (a1), (a2) and (b) with water.
• the order of the addition of components (a1), (a2), (b), and water is not critical.
• Aqueous liquors according to the present invention can have a pH value in the range from 5 to 10, preferably in the range from 5.5 to 9, more preferably to 8 and even more preferably in the range from 6.0 to 7.5.
• the present invention further provides for the use of aqueous liquors according to the present invention for treating a non-dyed textile, preferably from cellulose fibers.
• the present invention further provides a process for treating a non-dyed textile from cellulose fibers by using aqueous mixtures according to the present invention.
• the present invention further provides a non-dyed textile preferably from cellulose fibers obtainable by the process of the present invention.
• the inventive textile obtainable by the process of the present invention has excellent further-processing properties, an excellent appearance and has very good and soft touch and an excellent pilling-rate.

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Citations (4)

• 2005
  • 2005-04-04 EP EP05007261A patent/EP1712673A1/de not_active Withdrawn

Patent Citations (4)

Non-Patent Citations (1)

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