Bleaching catalysts

FIELD: chemistry.

SUBSTANCE: invention relates to composition for bleaching stains or soiling on textile materials. Composition contains H2O2 or H2O2 precursor and from 0.00001 to 1 wt %, counted per the total weight of composition, formula (1) compound. In formula (1) R1, R2, R3, R4 are hydrogen; or R1, R2, R3, R4 independently on each other are OR11 or NO2; or R1 and R2 are bound together with formation of phenyl; R5 stands for hydrogen; R6 stands for hydrogen; R7 is group with anion A-; k represents 1; A- is anion of inorganic acid, selected from Cl- or Br-; R10 stands for C1-C28alkyl; R11 is C1-C18alkyl. The invention also relates to granule, to method for bleaching stains on textile materials and to application of formula (1) compound as catalyst of oxidation reaction in context of bleaching stains or soiling on textile materials.

EFFECT: obtaining composition with high bleaching activity, which does not cause considerable damage to fibres.

22 cl

 



 

Same patents:

FIELD: textiles, paper.

SUBSTANCE: method of bleaching linen fibres for production of medical supplies is proposed, consisting in that the following operations are carried out in sequence: treatment with sulphuric acid solution and subsequent washing at a temperature of 25-30°C for 25-30 minutes, oxidative cooking with the alkaline solution of hydrogen peroxide containing stabiliser, in stages for various values of the silicate-alkali modulus, first at a temperature of 20-25°C at a module of 0.5-0.6 for 10-15 minutes, then at a module of 0.8-0.9 for 10-20 minutes, and then at a module of 1.0-1.1 for 30-60 minutes at a temperature of 70-75°C, after that the temperature is raised to 96-98°C and maintained for 30-60 minutes, then the module is reduced to 0.4-0.5 and cooking is continued for 30-60 minutes, bleaching in the alkaline solution containing the same substance as the solution for the oxidative cooking, washing with water and final oxidation with aqueous solution of acetic acid.

EFFECT: invention enables to improve the efficiency, environmental friendliness of the method and to obtain bleached fibres with high properties of bleaching, capillary capacity, normalised content of chloride, calcium and sulphate salts.

4 cl, 2 tbl

FIELD: textiles, paper.

SUBSTANCE: method comprises acid treatment, reducing boiling and oxidation treatment with the solution of hydrogen peroxide at a temperature from 95 to 100°C, avivage and washing between the technological operations first with hot and then cold water. The acid treatment is carried out with the preparation which is a composition comprising sulfamic acid with a concentration of 0.5 to 2.0 g/l. The boiling is carried out for 40 to 90 minutes using as a reducing agent the composition containing derivatives based on sulfinic acid with a concentration of 0.5 to 2.5 g/l and the reducing agent with the complexing additives with a concentration of 1.5 to 2.5 g/l.

EFFECT: improving the whiteness level of flax roving.

3 cl, 1 tbl

FIELD: chemistry.

SUBSTANCE: disclosed is a stabilising composition containing (A) a polymer of formula , where R1 is hydrogen or C1-12-alkyl, R2-COOM or -CH2COOM; M is hydrogen, an alkali or alkali-earth metal ion, or an ammonium ion or mixture thereof; n, m and k are molar ratios of monomers, where n ranges from 0 to 0.95, m ranges from 0.05 to 0.9 and k ranges from 0 to 0.8, and (n+m+k)=1, and the weight-average molecular weight ranges from 500 to 20 000 000 g/mol; (B) a chelating agent; (C) poly-alpha-hydroxyacrylic acid or alkaline salt thereof, or corresponding polylactone thereof, and (D) possibly a polycarboxylic acid polymer or alkaline salt thereof. The invention also discloses a method of treating fibrous material with said stabilising composition.

EFFECT: disclosed composition has a synergetic stabilising effect compared to existing stabilisers.

28 cl, 5 tbl, 8 ex

FIELD: textile, paper.

SUBSTANCE: cellulose-containing textile material is processed in a bleaching solution, which contains hydrogen peroxide, diarin, which is a mixture of aqueous solutions of sodium salts of phosphorus-containing complexons, carbamide, a penetrating agent EM. Diarin is mixture of aqueous solutions of sodium salts of phosphorus-containing complexons. The penetrating agent EM is a composition based on anion-active and non-ionogenic surfactants. Besides, treatment in the bleaching solution is carried out simultaneously with ultrasonic exposure at the frequency of 25-35 kHz, capacity of 1.5-2.5 kW for 20-30 minutes.

EFFECT: invention makes it possible to considerably reduce power inputs, to increase material quality, to improve process ecological compatibility and to reduce its labour intensiveness.

1 tbl

FIELD: textile, cotton.

SUBSTANCE: invention refers to the textile industry in particular, to the technology of the bleaching of flax-containing fabrics and can be used for the production of the bleached woven linens or for the preparation of the fabrics for colouring and stamping. It describes the method of the fermentation and peroxide bleaching of the flax-containing fabrics including enzymatic procession by the soaking into the 40-45°C solution of the multienzyme preparation with the indicator the enzyme activity, in un/ml: endopolygalacturonase - 7-10; α-amylase - 8.8-9.2; β- amylase - 0.5-0.6; γ- amylase - 0.2-0.5; pectinesterase - 1.0-1.5; exopolygalacturonase - 0.5-0.7; exogalactosidase - 0.3-0.4; exoxylosidase - 0.2-0.3; exoglucanase - 0.3-0.5, with the addition of the sodium bicarbonate 20-25 g/l and penetrating agent, maturing the wet squeezed fabric and its steaming in 85-95°C temperature during 20-30 min.; intermediate washing with the acidification in oxalic acid solution 2.5-5 g/l, high-temperature peroxide bleaching by the stabilised alkaline-peroxide solution with the peroxide concentration 2.2-2.9 g/l with active oxygen for one stage, washing and drying.

EFFECT: invention helps to increase the level of the removal of starch size before peroxide bleaching up to 80-85%; it increases the speed of the capillary soaking of water solution and improves uniformity of the capillary characteristics of the fabric; it increases the strength properties of the fabric, decreases its rigidity to 96-125 mN·cm2 because of larger removal of the lignin; it decreases the attenuationof the dyeing of colour warpings of the tapestry linens; it simplifies the process and reduce its duration.

2 cl, 1 tbl, 3 ex

FIELD: textile, paper.

SUBSTANCE: invention concerns method of flaxen roving preparation for spinning and can be applied in textile industry. Method of enzyme and peroxide preparation of highly lignified flaxen roving for spinning involves deacidification, enzyme processing at 40-50°C for 90-95 minutes by polyenzyme preparation solution with enzyme activity indicators, units per ml: endopolygalacturonase - 20-25; pectinesterase - 2.5-4.7; protease - 0.2-0.3; exopolygalacturonase - 0.6-0.1; exogalactosidase - 0.2-0.4; exoxylosidase - 0.3-0.5; and exoglucanase - 0.6-0.8. Further the roving is heated to the boiling point and matured for 20-25 minutes, flushed by water and processed for 90-95 minutes in alkaline peroxide solution at hydro peroxide concentration of 0.6-0.8 g/l of active oxygen and total alkalinity of 6.5-7.0 g/l rated per caustic soda. Then the roving is flushed with detergent and water and undergoes counter-microbe processing.

EFFECT: fiber whitening degree enhanced up to 54-56%; obtainment of thin yarn meeting the requirements for both "1 high-flaxen" and "1 high tow" grades by GOST 10078-85 in line density and line density and tear load variation rates; reduced yarn tear rate in weaving process to 40-50 tears for 100 spindles per hour; enhanced yarn strength in 1,2-1,4 times; improved esthetics of woven canvas exterior.

1 tbl, 3 ex

FIELD: textile, paper.

SUBSTANCE: invention concerns method of flaxen roving preparation for spinning and can be applied in textile industry. Method of enzyme and peroxide preparation of flaxen roving for spinning involves deacidification performed before enzyme processing for 90-95 minutes by polyenzyme preparation solution with enzyme activity indicators, units per ml: endopolygalacturonase - 20-25; pectinesterase - 0.8-4.7; protease - 0.2-0.3; and exopolygalacturonase - 0.2-0.4. Further the roving is flushed by water and processed for 90-95 minutes in alkaline peroxide solution at hydro peroxide concentration of 0.4-0.5 g/l of active oxygen and total alkalinity of 6.5-7.0 g/l rated per caustic soda, then flushed with detergent and water and undergoes counter-microbe processing.

EFFECT: reduced tear load in moist unprocessed roving up to 50-61%; obtainment of thin yarn meeting the requirements for 1 grade in thickness and stability of physical and chemical yarn properties; enhanced yarn strength in 1,2-1,4 times; improved esthetics of woven canvas exterior.

1 tbl, 3 ex

FIELD: textile, paper.

SUBSTANCE: invention concerns methods of flax fiber dyeing and preparation for spinning and can be applied in textile industry. Combined method of dyeing and preparation for spinning involves deacidification, processing by digester dye solution for 90-95 minutes at 40-50°C, the solution including vat colour, sodium bicarbonate, sulfonol NP-3 and anhydrous synthanol, polyenzyme preparation with enzyme activity indicators, units per ml of solution: endopolygalacturonase - 20-40; pectinesterase - 2.5 - 8.0; protease - 0.2-0.4; exopolygalacturonase - 0.6-1.5; exogalactosidase - 0.3-0.5; exoxylosidase - 0.3-0.8; exoglucanase - 0.4-1.0. Further the mass is heated to the boiling point, matured for 30-60 minutes, flushed by cold water. Oxidising processing is performed for 15-25 minutes at 20-25°C in stabilised peroxide solution including 0.3-0.4 g/l of hydro peroxide (100%), 1-2 g/l of laundry soap, and alkaline agents to comprise total alkalinity of 5.5-6.0 g/l rated per caustic soda, with further heating for 20-50 minutes to 95-100°C and maturing for 20-30 minutes, followed by double flush with detergent first and with water next, and further deacidification at 45-50°C for 15-20 minutes and flushing.

EFFECT: reduced irregularity of geometrical parametres and durability of flax semiproducts; improved colorability and colour evenness of textile semiproducts; more environment-friendly process and improved labour health.

1 tbl, 3 ex

FIELD: chemistry.

SUBSTANCE: invention relates to bleaching compositions, which in fact do not contain peroxide bleaches, for bleaching of fabrics. Described is liquid bleaching composition with pH 10 or lower, which contains: (a) complex compound of transitional metal as catalyst of bleaching in air, (b) from 0.001 for 3 wt/wt % of odorant.

EFFECT: obtaining composition, whose bleaching activity is more, than 10 times higher as compared with bleaching activity of composition, containing as odorant molar equivalent of citronellal.

5 cl, 3 tbl, 62 ex

FIELD: chemistry.

SUBSTANCE: particles contain inner coating layer that consist of at least one hydrate-forming mineral salt, and outer coating layer, including 0.2-3 wt % alkali metal silicate with module more than 2.5, particularly 3 to 5. Outer layer is obtained using alkali metal silicate solution with alkali metal silicate concentration 2 to 20 wt %. Dissolution time can be extended by alkali metal silicate concentration lowering in solution used, coating material amount being the same. Dissolution time can be extended significantly according to coating layers sequence and solution concentration with low quantity of alkali metal silicate.

EFFECT: extension of dissolution time.

18 cl, 7 tbl, 18 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a particle of a bleaching agent, which has a) core, which contains more than 70 wt % of sodium percarbonate, b) internal envelope, containing sodium sulphate in the form of thenardite or burkeite in an amount of at least 50 wt %, and c) internal envelope, containing a water-soluble binding agent and at least one bleaching activator, selected from capable of perhydrolysis N-acyl and O-acyl compounds. The invention also relates to a method of obtaining the particle and to a detergent.

EFFECT: particles of the bleaching agent are stable in storage, suitable for storing in bins and make it possible to transport them safely and to work with them even in a hot and wet climate.

17 cl, 15 ex, 3 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to bleaching compositions in the form of sacks with several compartments. Described is a sack with several compartments, containing the first compartment and the second compartment, with the first compartment containing a solid composition, and the solid composition contains a source of an oxygen bleaching agent, a bleaching activator, a polycarboxylate polymer, representing a copolymer of maleic acid/acrylic acid, and the second compartment containing a liquid composition, and the liquid composition contains a low molecular solvent, with the sack material being made in the form of a water-soluble film.

EFFECT: improved stability over time.

17 cl, 2 tbl

FIELD: personal use articles.

SUBSTANCE: present invention relates to the field of laundry washing. Described is a method for washing a batch of white laundry in a washing machine, preferably - a professional one, where a batch of laundry is subjected to at least three washing stages: at the first stage a detergent is added; at the second one a bleacher is added, at the third one a whitening additive containing a bleacher absorbent is added. Additionally described is application of the bleacher absorbent in the process of washing.

EFFECT: stains removal, odour and whiteness improvement.

7 cl, 6 tbl, 3 ex

Container // 2511399

FIELD: packing industry.

SUBSTANCE: invention relates to containers. It describes a container including detergent composition, first water-permeable guard wall, and second guard wall containing additional bleaching catalyst and base material containing a polymer material, and the second guard wall is made in the form of a film of 0.10-1.0 mm thickness, where bleaching catalyst comprises 0.001% to 10.00% of the second guard wall, and base material containing a polymer material comprises the rest of composition, and the film is made by extrusion or casting/ solvent casting. Application of container is described as well.

EFFECT: reduced amount of bleaching activation agent without deterioration of bleaching quality, reduced damage to an object.

12 cl, 6 ex

FIELD: chemistry.

SUBSTANCE: multi-compartment pouch having a water-soluble film and having at least a first and a second compartment, wherein each compartment contains a composition, suitable for use in laundry, containing a surfactant, wherein the second compartment contains a whitening agent that exhibits a tinting efficiency of at least 5 and a wash removal value in the range 30% to 95%, wherein the compositions in the first and second compartments are liquid compositions and the whitening agent contains: at least one chromophore component containing thiophene dye and a thiazole dye, and at least one polymer component.

EFFECT: providing a method of adding highly efficient whitening agents to a liquid detergent, which enables to avoid undesirable side effects, prolonged service life of the substrate, neutralising yellowing of cellulose substrates.

8 cl, tbl

FIELD: chemistry.

SUBSTANCE: invention relates to a bleaching agent based on granular sodium percarbonate, coated with a stabilising coat. The stabilising coat contains sodium sulphate, sodium carbonate, sodium silicate and additionally a photocatalyst based on an aluminium complex of sulphonated tetrabenzotetraazoporphines and a water-soluble optical bleaching agent, in wt %: sodium sulphate - 50.0-99.5, sodium carbonate - 0.1-49.884, sodium silicate - 0.1-5.0, said photocatalyst - 0.01-5.0, optical bleaching agent - 0.005-5.0.

EFFECT: invention increases stability and bleaching power of sodium percarbonate.

2 cl, 7 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a bleaching agent based on granular sodium percarbonate, coated with a stabilising coat. The stabilising coat contains sodium sulphate, sodium carbonate, sodium silicate and additionally a water-soluble optical bleaching agent, in wt %: sodium sulphate - 50-99.5, sodium carbonate - 0.1-49.88, sodium silicate - 0.1-5.0, optical bleaching agent - 0.01-5.0.

EFFECT: invention increases stability and bleaching power of sodium percarbonate.

2 cl, 7 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a bleaching agent based on granular sodium percarbonate, coated with a stabilising coat. The stabilising coat contains sodium sulphate, sodium carbonate, sodium silicate and additionally a photocatalytic bleaching agent based on an aluminium complex of sulphonated tetrabenzotetraazaporphines, in wt %: sodium sulphate - 50-99.5, sodium carbonate - 0.1-49.88, sodium silicate - 0.1-5.0, said photocatalytic bleaching agent - 0.01-5.0.

EFFECT: invention increases stability and bleaching power of sodium percarbonate.

2 cl, 7 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a bleaching system for household textile items containing at least one bleaching agent, where the bleaching system is selected from peroxybenzoic acid, peroxy-6-naphthoic acid, peroxylauric acid, peroxystearic acid, phthalimido peroxycaproic acid, 6-phthalimido peroxyhexanoic acid, nonylimido peroxyamber acid, nonylimido peroxyadipic acid, 1,12-diperoxydodecanoic acid, 1,9-diperoxyazelaic acid, diperoxyisophthalic acid and 2-decyldiperoxybutane-1,4-diacid and coated by a shell in form of a layer of a polymer with urethane and urea groups, where a prepolymer with terminal NCO groups is obtained from macrools, ionic or potentially ionic polyols and polyisocyanates used in excess, said prepolymer being subjected to reaction with compounds which contain at least two amine groups which are reactive towards isocyanate with ratio of NCO groups to NH groups less than or equal to 1:1, after which said polymer is obtained via neutralisation.

EFFECT: obtaining a novel bleaching system.

11 cl, 2 ex

FIELD: chemistry.

SUBSTANCE: invention relates to aqueous liquid compositions for bleaching, cleaning and disinfecting surfaces. The invention describes an aqueous liquid bleaching composition which contains hypochlorite, a quaternary ammonium salt of formula: R1R2R3R4N+X-, where R1 - C10-C20 alkyl; R2, R3 and R4 - C1-C3 alkyl; X is an inorganic anion, and a viscousifying system which contains an amine oxide as a surfactant and a fatty acid. Described also is a method of imparting prolonged antibacterial activity on a solid surface using the said composition and a container for preparing the said composition.

EFFECT: obtaining a composition which retains its activity and stability during storage for 4 weeks.

16 cl, 2 tbl, 4 ex

FIELD: chemistry.

SUBSTANCE: invention relates to a particle of a bleaching agent, which has a) core, which contains more than 70 wt % of sodium percarbonate, b) internal envelope, containing sodium sulphate in the form of thenardite or burkeite in an amount of at least 50 wt %, and c) internal envelope, containing a water-soluble binding agent and at least one bleaching activator, selected from capable of perhydrolysis N-acyl and O-acyl compounds. The invention also relates to a method of obtaining the particle and to a detergent.

EFFECT: particles of the bleaching agent are stable in storage, suitable for storing in bins and make it possible to transport them safely and to work with them even in a hot and wet climate.

17 cl, 15 ex, 3 tbl

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