Classifications

• • 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
  • C11D11/00—Special methods for preparing compositions containing mixtures of detergents
  • C11D11/0082—Special methods for preparing compositions containing mixtures of detergents one or more of the detergent ingredients being in a liquefied state, e.g. slurry, paste or melt, and the process resulting in solid detergent particles such as granules, powders or beads
• • 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
  • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
  • C11D1/66—Non-ionic 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
  • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
  • C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
• • 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
  • C11D3/02—Inorganic compounds ; Elemental compounds
  • C11D3/04—Water-soluble compounds
  • C11D3/10—Carbonates ; Bicarbonates
• • 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
  • C11D3/37—Polymers
  • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
  • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
  • C11D3/3761—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in solid compositions
• • 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

Definitions

• the present invention relates to a method for producing detergent particles.
• the fluidity of the detergent particle group constituting the powder detergent is an important physical property from the viewpoint of improvement in productivity and ease of use, and a detergent particle group having high fluidity is required.
• the fluidity is, for example, the time required for 100 ml of powder to flow down in a bulk density measuring device defined in JIS K3362. If the fluidity is high, the time required for filling the detergent can be shortened, so that the productivity is improved.
• a surfactant mainly composed of an anionic surfactant, an alkali agent such as sodium carbonate, and a builder such as zeolite are blended.
• an anionic surfactant such as sodium carbonate
• a builder such as zeolite
• WO-A 2006/013982 (corresponding to JP-A 2006-137925 and EP-A 1788071) describes a mixture obtained by mixing water, a surfactant composition containing a specific anionic surfactant, and base granules.
• a method for producing a mononuclear detergent particle group that is surface-modified with a fine powder is disclosed.
• WO-A 2005/083049 (corresponding to JP-A 2007-522330) is a three-way cleaning of an anionic detersive surfactant, a nonionic detersive surfactant, and a cationic detersive surfactant.
• Granular laundry detergent compositions are disclosed that contain a surfactant system and contain little or no zeolite builders and phosphate builders.
• US-B 6534474 (corresponding to JP-B 3161710) discloses a surfactant composition containing a nonionic surfactant and capable of preparing a non-liquid detergent composition by mixing with a powder raw material. Has been.
• the present invention relates to 100 parts by mass of powdered sodium carbonate having a bulk density of 400 to 600 g / L, 6 to 35 parts by mass of a nonionic surfactant, acrylic acid based on all monomer constituent units constituting the polymer or its A step of mixing 2 to 14 parts by mass of an acrylic acid type polymer (hereinafter also referred to as an acrylic acid type polymer) in which the proportion of the structural unit of the salt is 90 to 100 mol% and 8 to 35 parts by mass of water (A And the ratio of the nonionic surfactant is 60% by mass or more in the surfactant mixed with the powdered sodium carbonate in the step (A).
• the present invention also relates to a detergent particle group obtained by the production method of the present invention.
• the present invention also relates to a method for washing a textile product using the detergent particles of the present invention.
• the present invention also relates to the use of the detergent particle group of the present invention for cleaning textile products.
• the present invention relates to nonionic surfactant 6 to 100 parts by mass of powdered sodium carbonate (hereinafter sometimes referred to as “powdered sodium carbonate (L)”) having a bulk density of 400 to 600 g / L.
• a surfactant having a step (A) of mixing 35 parts by mass, 2 to 14 parts by mass of polyacrylic acid or a salt thereof, and 8 to 35 parts by mass of water, and mixing with powdered sodium carbonate in step (A)
• the present invention relates to a method for producing detergent particles, wherein the proportion of the nonionic surfactant is 60% by mass or more.
• Sodium carbonate is a powder detergent and a general-purpose alkaline agent. Increasing its blending amount leads to an improvement in detergency. However, when sodium carbonate is mixed with a liquid component such as a nonionic surfactant blended in a powder detergent, the fluidity is significantly reduced.
• the present invention provides a method capable of producing a detergent particle group having a high yield even though it contains a large amount of sodium carbonate and further contains a nonionic surfactant.
• a method capable of producing a detergent particle group excellent in fluidity with a high yield despite containing a large amount of sodium carbonate and further containing a nonionic surfactant is provided.
• the step (A) includes powdered sodium carbonate (L) and a nonionic surfactant, an acrylic acid type polymer, and a predetermined ratio with respect to the powdered sodium carbonate (L).
• This is a step of mixing water.
• the detergent particles having powder physical properties described later can be easily manufactured by mixing the additives uniformly.
• Powdered sodium carbonate (L) used in the step (A) has a bulk density of 400 to 600 g / L, preferably 450 to 550 g / L in order to suppress excellent fluidity and exudation of nonionic surfactant. It is. This bulk density is measured by a method defined by JIS K3362: 2008. Such powdered sodium carbonate (L) can be selected from those marketed as so-called light sodium carbonate (light ash, etc.).
• the average particle size of the powdered sodium carbonate (L) is preferably 60 to 150 ⁇ m, more preferably 70 to 130 ⁇ m.
• the powdered sodium carbonate of the present invention has a bulk density of 400 to 600 g / L, preferably 450 to 550 g / L, and an average particle size of 60 to 150 ⁇ m, Furthermore, 70 to 130 ⁇ m of sodium carbonate.
• the nonionic surfactant used in step (A) is preferably a nonionic surfactant having a melting point of 30 ° C. or lower.
• the melting point of the nonionic surfactant is preferably 30 ° C. or lower, more preferably 25 ° C. or lower, and further preferably 22 ° C. or lower.
• Nonionic surfactants include, for example, polyoxyalkylene alkyl ether, polyoxyalkylene alkylphenyl ether, alkyl (polyoxyalkylene) polyglycoside, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene glycol fatty acid ester, polyoxyethylene poly Polyoxyethylene polyoxypropylene block polymers such as oxypropylene polyoxyethylene alkyl ether and polyoxyalkylene alkylol (fatty acid) amide are preferred.
• the nonionic surfactant is preferably a polyoxyalkylene alkyl ether having an alkyl group having 8 to 22 carbon atoms, and further having an alkyl group having 10 to 14 carbon atoms, and an average addition mole of an oxyalkylene group containing an oxyethylene group.
• a polyoxyalkylene alkyl ether having a number of 4 to 25 mol, more preferably 4 to 21 mol, and further 4 to 12 mol is preferable, and an oxyalkylene group other than an oxyethylene group is preferably an oxypropylene group.
• the average addition moles of oxyalkylene groups those having an addition mole number of oxypropylene groups of 0 to 3 and an average addition mole number of oxyethylene groups of 4 to 22 are preferred.
• the addition order of the oxypropylene group and the oxyethylene group may be random or block.
• a polyoxyalkylene alkyl ether obtained by adding 4 to 12 mol (preferably 6 to 10 mol) of alkylene oxide to an alcohol having 10 to 14 carbon atoms is preferable.
• the alkylene oxide include ethylene oxide and propylene oxide, and ethylene oxide is preferable.
• More preferred nonionic surfactants are polyoxyethylene alkyl ethers in which the alkyl group has 10 to 14 carbon atoms, and the average added mole number of oxyethylene groups is 4 to 12 moles, more preferably 6 to 10 moles. .
• Nonionic surfactants may be used alone or in combination of two or more.
• the melting point of the nonionic surfactant is measured using a Mettler FP81 (manufactured by Mettler Instrument AG) of an FP800 thermosystem at a temperature rising rate of 0.2 ° C./min.
• a surfactant other than the nonionic surfactant (hereinafter sometimes referred to as other surfactant) can also be used as the surfactant.
• other surfactants include anionic surfactants, cationic surfactants, and amphoteric surfactants, with anionic surfactants being preferred.
• the ratio of the nonionic surfactant in the surfactant mixed with the powdered sodium carbonate in the step (A) is 60. It is at least mass%, preferably 65 to 95 mass%, more preferably 70 to 90 mass%.
• anionic surfactant examples include sulfuric acid ester salts of alcohols having 10 to 18 carbon atoms, sulfuric acid ester salts of alkoxylated products of alcohols having 8 to 20 carbon atoms, alkylbenzene sulfonates, paraffin sulfonates, ⁇ -olefin sulfonic acids Salts, ⁇ -sulfo fatty acid salts, ⁇ -sulfo fatty acid alkyl ester salts or fatty acid salts are preferred.
• an alkylbenzene sulfonate having a linear alkyl group having 10 to 14 carbon atoms, more preferably 12 to 14 carbon atoms in the alkyl chain is preferred, and alkali metals and amines are preferred as the counter ion.
• alkali metals and amines are preferred as the counter ion.
• Sodium and / or potassium, monoethanolamine, and diethanolamine are more preferable.
• cationic surfactant examples include quaternary ammonium salts such as a carbon number alkyltrimethylammonium salt having an alkyl group having 6 to 20 carbon atoms which may be interrupted by an amide bond or an ester bond.
• amphoteric surfactants examples include carbobetaine type and sulfobetaine type.
• the surfactant used in step (A) further contains an anionic surfactant, that is, when both a nonionic surfactant and an anionic surfactant are used in step (A), the nonionic surfactant is used.
• the mass ratio of the agent / anionic surfactant is preferably 20/1 to 3/2, more preferably 10/1 to 13/7, from the viewpoint of detergency and foaming and fluidity of the resulting detergent particles. 8/1 to 7/3 is more preferable.
• step (A) 6 to 35 parts by mass, preferably 10 to 25 parts by mass, more preferably 15 to 20 parts by mass of the nonionic surfactant are mixed with 100 parts by mass of powdered sodium carbonate (L). This is preferable from the viewpoint of detergency and fluidity of the obtained particle group.
• the acrylic acid type polymer of the present invention is a structural unit in which the main structural unit constituting the polymer is derived from a monomer of acrylic acid or a salt thereof. Therefore, the acrylic acid type polymer can also be expressed as an acrylic acid homopolymer, an acrylic acid copolymer, or a salt thereof.
• the proportion of the constituent units from the acrylic acid monomer in the monomer constituent units of the acrylic acid type polymer is 90 to 100 mol%.
• the proportion of acrylic acid monomer constituent units in the monomer constituent units of the acrylic acid type polymer is preferably 95 to 100 mol%, more preferably 97 to 100 mol%, and the proportion is 100 mol% of polyacrylic acid (A homopolymer of acrylic acid) is even more preferable.
• the acrylic acid type polymer may be a salt of an alkali metal or the like.
• an acrylic acid type polymer containing a large amount of acrylic acid or a salt thereof as a monomer constituent unit of the polymer, a detergent particle group having excellent powder physical properties can be obtained.
• the acrylic acid type polymer is preferably polyacrylic acid or a salt thereof.
• Polyacrylic acid or a salt thereof can also be expressed as an acrylic acid homopolymer or a salt thereof.
• the monomer constituent unit other than the constituent unit of acrylic acid or a salt thereof constituting the acrylic acid type polymer is a constituent unit derived from a monomer copolymerizable with acrylic acid or a salt thereof, and the effect of the present invention is impaired.
• a monomer other than acrylic acid or a salt thereof for constituting the acrylic acid type polymer a nonionic monomer and / or an anionic monomer, and further an anionic monomer are preferable.
• anionic monomers include sulfonic acid monomers such as allyl sulfonic acid, vinyl sulfonic acid, and methallyl sulfonic acid, and carboxylic acid monomers other than acrylic acid such as maleic acid, methacrylic acid, and itaconic acid.
• the acrylic acid type polymer of the present invention is preferably an acrylic acid copolymer which is a copolymer of acrylic acid and allylsulfonic acid or maleic acid or a salt of the copolymer.
• the acrylic acid type polymer preferably has a weight average molecular weight of 100 to 80,000 from the viewpoint of excellent fluidity and suppression of exudation of the nonionic surfactant, and the lower limit of the weight average molecular weight is preferably 2000 or more. Therefore, the weight average molecular weight of the acrylic acid type polymer is preferably 2000 to 80000.
• the salt of the acrylic acid type polymer is preferably an alkali metal salt, more preferably a sodium salt.
• the weight average molecular weight can be measured by gel permeation chromatography using a mixed solution of acetonitrile and water (phosphate buffer) as a developing solvent and polyethylene glycol as a standard substance.
• polyacrylic acid or a salt thereof as the acrylic acid type polymer preferably has a weight average molecular weight of 100 to 80,000, more preferably 2000 to 80,000.
• the salt is preferably a sodium salt.
• an acrylic acid copolymer or a salt thereof in particular, a copolymer of acrylic acid or a salt thereof and an anionic monomer copolymerizable with acrylic acid or a salt thereof preferably has a weight average molecular weight of 100 to 80,000. 2000 to 80000 is preferable.
• the anionic monomer allyl sulfonic acid, maleic acid or a salt thereof is preferable.
• the salt is preferably a sodium salt.
• step (A) will be described in detail.
• Components described below such as a nonionic surfactant, powdered sodium carbonate (L), and an acrylic acid type polymer, are preferably preferred embodiments in the description of each component described above.
• limited may be sufficient as a process (A) by combining multiple requirements of the process (A) from which the following paragraph differs.
• step (A) 2 to 14 parts by mass of an acrylic acid type polymer with respect to 100 parts by mass of powdered sodium carbonate (L), preferably from the viewpoint of suppressing excellent fluidity and exudation of the nonionic surfactant. Is preferably 3 to 10 parts by mass, more preferably 4 to 7 parts by mass, from the viewpoint of the fluidity of the resulting particles.
• water is 8 to 35 parts by mass, preferably 12 to 12 parts by mass with respect to 100 parts by mass of powdered sodium carbonate (L) from the viewpoint of excellent fluidity and suppression of exudation of the nonionic surfactant. It is preferable to mix 28 parts by mass, more preferably 16 to 24 parts by mass, from the viewpoint of fluidity of the obtained particle group.
• step (A) a nonionic surfactant solution optionally containing water and an acrylic acid type polymer aqueous solution are mixed with the powdered sodium carbonate as separate solutions, or a nonionic surfactant, acrylic
• a premixed surfactant composition (hereinafter sometimes referred to as a surfactant composition) containing an acid type polymer and water is prepared, and the surfactant composition is used as the powdered sodium carbonate (L).
• a surfactant composition hereinafter sometimes referred to as a surfactant composition
• the nonionic surfactant solution is in a gel form, it is heated to be used in a liquid state.
• the concentration of the acrylic acid type polymer in the aqueous acrylic acid type polymer solution is preferably 5 to 60% by mass, more preferably 10 to 50% by mass.
• the amount of water in the nonionic surfactant solution should be contained within a range of the water part of the previous paragraph with respect to 100 parts by weight of the powdered sodium carbonate in consideration of the amount of water brought in from the acrylic acid type polymer aqueous solution. Can do.
• the addition order of the nonionic surfactant and the acrylic acid type polymer aqueous solution may be added simultaneously or in order.
• the other solution may be started during the charging of one solution. Either one may be input first and then the other may be input.
• an acrylic acid polymer aqueous solution is added after the nonionic surfactant solution is added. More preferably, however, it is preferred to prepare the premixed surfactant and add it to the powdered sodium carbonate (L).
• the surfactant composition is preferably a composition that becomes liquid or slurry at 60 ° C. or lower.
• the content of the nonionic surfactant in the surfactant composition is preferably 20 to 65% by mass, more preferably 25 to 55% by mass.
• the content of the acrylic acid type polymer in the surfactant composition is preferably 5 to 25% by mass, more preferably 8 to 20% by mass.
• the water content in the surfactant composition is preferably 20 to 60% by mass, more preferably 30 to 50% by mass.
• the surfactant composition may contain components other than a nonionic surfactant such as an anionic surfactant, an acrylic acid type polymer and water, but the nonionic surfactant, the acrylic acid type polymer and water
• the total content of is preferably 45 to 99.5% by mass, more preferably 60 to 99% by mass.
• the nonionic surfactant, acrylic acid type polymer, and water in the composition are each in the form of powdered sodium carbonate, and further powdered sodium carbonate (L) 100 parts by mass. Is used within the above range.
• the present invention provides a surfactant composition containing 20 to 65% by mass of a nonionic surfactant, 5 to 25% by mass of an acrylic acid type polymer, and 20 to 60% by mass of water in the step (A).
• a surfactant composition having a total content of nonionic surfactant, acrylic acid type polymer and water of 45 to 99.5% by mass is obtained with respect to 100 parts by mass of powdered sodium carbonate (L).
• the nonionic surfactant is preferably mixed at a ratio of 6 to 35 parts by weight, acrylic acid type polymer 2 to 14 parts by weight, and water 8 to 35 parts by weight. It should be noted that the numerical ranges of various component concentrations and added parts by mass in the surfactant composition are desirably the above-mentioned “more preferable numerical values”.
• the mixer for mixing powdered sodium carbonate (L), nonionic surfactant, acrylic acid type polymer, and water used in step (A) is, for example, a component in a liquid state of these, or What provided the jacket in order to control the temperature in the nozzle for adding surfactant composition or a mixer is preferable.
• the mixing conditions in the step (A) are selected so that the powdered sodium carbonate (L) and other components can be mixed efficiently.
• the stirring The fluid number of the blade is preferably 0.5 to 8, more preferably 0.8 to 4, and still more preferably 1.0 to 2.
• the fluid number of the stirring blade is preferably 0.1 to 4, more preferably 0.15 to 2.
• the fluid number of the stirring blade is preferably 0.05 to 4, more preferably 0.1 to 2.
• Fluid number V 2 / (R ⁇ g)
• V peripheral speed [m / s] at the tip of the stirring blade or crushing blade
• R Rotating radius of stirring blade or crushing blade
• g Gravity acceleration [m / s 2 ]
• step (A) powder raw materials other than powdered sodium carbonate (L) can be blended if desired.
• the blending amount is preferably 30 parts by mass or less, more preferably 25 parts by mass or less, and still more preferably 20 parts by mass or less with respect to 100 parts by mass of powdered sodium carbonate (L) from the viewpoint of solubility.
• the powder raw material other than powdered sodium carbonate (L) mainly means a powder cleaning power enhancer, an oil absorbent or a diluent at room temperature.
• a detergency enhancer a base that exhibits sequestering ability such as zeolite and citrate, a base that exhibits alkaline ability such as sodium bicarbonate and potassium carbonate, and a metal such as crystalline silicate
• examples include bases having both sequestering ability and alkaline ability
• oil absorbing agents include amorphous silica and amorphous aluminosilicate having low sequestering ability but high oil absorbing ability, and diluents. Examples thereof include sodium sulfate.
• this powder raw material in combination with powdered sodium carbonate (L) as desired, it is possible to achieve a high surfactant composition and a reduction in the adhesion of the mixture into the mixer, and to improve the cleaning power. You can also plan. Some of these may be dry-blended after the detergent particles are prepared.
• zeolite, amorphous silica and amorphous aluminosilicate are water-insoluble with an average particle size of 0.1 to 20 ⁇ m.
• Inorganic compounds can be used as surface modifiers for detergent particles.
• a water-soluble inorganic compound such as pulverized sodium sulfate having an average particle size of 0.1 to 20 ⁇ m can also be used as a surface modifier.
• the average particle size of the fine powder is measured by a method using light scattering, for example, a particle analyzer (manufactured by Horiba, Ltd.) or a measurement by microscopic observation.
• a nonionic surfactant is used as disclosed in JP-B31617110, for example.
• nonionic compounds include (i) polyoxyalkylene having an oxyalkylene group having 2 to 5 carbon atoms and a weight average molecular weight of 3000 to 30000, and (ii) a weight average molecular weight of 3000 to 30000.
• nonionic compound examples include polyethylene glycol, polypropylene glycol, and polyoxyethylene methyl ether.
• the molecular weight of the nonionic compound can be measured in the same manner as in the acrylic acid type polymer. However, if the measurement is hindered due to poor solubility in the solvent, the light scattering method is used. It can be measured using a dynamic light scattering photometer (DLS-8000 series, manufactured by Otsuka Electronics Co., Ltd.).
• the compounding amount of the nonionic compound is preferably 2 to 40 parts by mass, more preferably 2 to 30 parts by mass with respect to 100 parts by mass of the nonionic surfactant from the viewpoint of solubility and detergency.
• fatty acid salts also have the effect of suppressing the appearance of nonionic surfactants.
• the ratio in the case of using a fatty acid salt is preferably 2 with respect to 100 parts by mass of the nonionic surfactant within the ratio of the nonionic surfactant / anionic surfactant described above from the viewpoint of detergency and solubility. -30 mass parts, more preferably 4-20 mass parts.
• the in-machine temperature during mixing is preferably higher than the melting point of the nonionic surfactant.
• a temperature at which the other components, for example, the surfactant composition and the powdered sodium carbonate (L) can be efficiently mixed while substantially suppressing the collapse of the powdered sodium carbonate (L) is preferable.
• the pour point or higher of the surfactant composition to be mixed is preferable, the pour point of 10 ° C. or higher is more preferable, and the pour point of 20 ° C. or higher is still more preferable.
• the mixing time is preferably about 2 to 10 minutes.
• the in-machine temperature can be adjusted by flowing cold water or hot water through a jacket or the like. Therefore, the apparatus used for mixing preferably has a structure with a jacket.
• the mixing method of the surfactant composition and powdered sodium carbonate (L) may be batch or continuous.
• the temperature of the surfactant composition to be supplied is preferably 70 ° C. or less, more preferably 60 ° C. or less, from the viewpoint of the stability of the surfactant composition.
• the mixing blade shape is a paddle type mixer.
• a mixer having a shaft, and mixing the powder by attaching a stirring blade to the shaft for example, Henschel mixer (manufactured by Mitsui Miike Chemical Co., Ltd.), high speed mixer (manufactured by Fukae Kogyo Co., Ltd.), vertical granule Rator (Powrec Co., Ltd.), Redige Mixer (Matsubo Co., Ltd.), Proshare Mixer (Pacific Kiko Co., Ltd.), TSK-MTI Mixer (Tsukishima Kikai Co., Ltd.), JP-A10-296064 , JP-A10-296065, etc.
• the mixing blade shape is a screw type mixer.
• the screw is parallel to the container wall along the conical container.
• mixers of a type that perform mixing by revolving around the shaft while rotating for example, Nauter mixer (manufactured by Hosokawa Micron Corporation), SV mixer (manufactured by Shinko Pantech Co., Ltd.), and the like.
• a continuous mixer generally used for continuous mixing is used.
• a powdered carbonic acid is obtained using a continuous apparatus among the above-described mixers.
• Sodium (L) and other components such as a surfactant composition may be mixed.
• the detergent particle group of the present invention includes, for example, other builders generally used in garment detergents, such as sequestering agents such as citrate and sodium tripolyphosphate, and alkaline agents such as sodium bicarbonate and potassium carbonate.
• sequestering agents such as citrate and sodium tripolyphosphate
• alkaline agents such as sodium bicarbonate and potassium carbonate.
• one or more of the substrates having both sequestering ability and alkali ability such as crystalline silicate and / or other bases generally used in detergent compositions, for example, the field of detergent for clothing
• a known surfactant, a recontamination preventive agent such as maleic acrylate copolymer and carboxymethyl cellulose
• inorganic powder such as sodium sulfate and sulfite
• a fluorescent whitening agent such as sodium bicarbonate and potassium carbonate.
• a detergent particle group having a high content of sodium carbonate is obtained by the production method including the step (A).
• the detergent particle group obtained by the present invention preferably contains 40% by mass or more, more preferably 50 to 85% by mass, and still more preferably 60 to 75% by mass of sodium carbonate.
• a water-insoluble inorganic compound such as a water-insoluble inorganic salt increases the fluidity of the detergent particles in the case of a detergent particle containing a nonionic surfactant as a main surfactant as in the present invention, thereby increasing the nonionic surface activity. It is used as a surface modifier for detergent particles in order to suppress the stain from the agent.
• the amount of the water-insoluble inorganic compound used as a surface modifier of the detergent particles can be reduced, and further, it is not substantially used. Even in this case, a detergent particle group having excellent fluidity can be obtained. Therefore, the detergent particles as a whole can be reduced to a state in which a water-insoluble inorganic compound such as zeolite is 10% by mass or less, further 5% by mass or less, further 4% by mass or less, and substantially not contained.
• the detergent particle group produced according to the present invention preferably has a phosphate builder content of 5% by mass or less, more preferably 2% by mass or less, and further preferably 1% by mass or less. It is more preferable not to contain it.
• the present invention is suitable as a method for producing detergent particles for textiles such as clothing.
• the detergent particles produced according to the present invention may be a part or all of the particles constituting the powder detergent as the final product.
• the detergent particle group produced according to the present invention is a particle group that becomes a powder detergent as the final product by being mixed with other detergent particle groups. Composed. That is, the detergent particle group produced according to the present invention can be used as a powder detergent itself, while it may be used as particles constituting a part of the powder detergent. Therefore, the present invention is also suitable as a method for producing detergent particle groups (in this case, “detergent particle groups” in this specification can be read as “detergent particle groups”).
• the present invention provides a nonionic surface active agent for 100 parts by mass of powdered sodium carbonate having a bulk density of 400 to 600 g / L and an average particle size of 60 to 150 ⁇ m, and further powdered sodium carbonate (L).
• the ratio of the nonionic surfactant in the surfactant which has step (A) of mixing 35 parts by mass and is mixed with powdered sodium carbonate and further with powdered sodium carbonate (L) in step (A) is It may be a method for producing a detergent particle group that is 60% by mass or more, and a preferred embodiment thereof can be applied to the method for producing a detergent particle group of the present invention.
• the present invention can produce a particle group containing sodium carbonate and a nonionic surfactant, which is excellent in fluidity and suitable as a constituent of a detergent, even if a surface modifier is not used or reduced.
• a method for producing a nonionic surfactant-containing particle group in this case, “detergent particle group” in this specification can be read as “nonionic surfactant-containing particle group”).
• the present invention provides a nonionic surface active agent for 100 parts by mass of powdered sodium carbonate having a bulk density of 400 to 600 g / L and an average particle size of 60 to 150 ⁇ m, and further powdered sodium carbonate (L).
• a nonionic interface having a step (A) of mixing 35 parts by mass, wherein the proportion of the nonionic surfactant is 60% by mass or more in the surfactant mixed with the powdered sodium carbonate in the step (A)
• It may be a method for producing an activator-containing particle group, and a preferred embodiment thereof can be applied to the method for producing a detergent particle group of the present invention.
• the obtained nonionic surfactant-containing particle group can constitute a detergent as it is or mixed with other components.
• particles mixed with the detergent particles produced according to the present invention mainly include, for example, cleaning aid particles, enzyme particles such as protease, amylase, cellulase and lipase, percarbonate and perborate.
• Bleaching agent particles bleaching activator particles that react with hydrogen peroxide such as tetraacetylethylenediamine (TAED), alkanoyloxybenzene sulfonate and alkanoyloxybenzene carboxylic acid to produce organic peracids, alkali metal carbonates
• alkali agent particles obtained by granulating an alkali agent such as alkali metal silicate. Functional particles may be blended.
• the functional particles include softener particles obtained by granulating a softening property clay material such as bentonite, fragrance particles mainly containing a fragrance component, and silicone such as dimethylsiloxane.
• Softener particles obtained by granulating a softening property clay material such as bentonite, fragrance particles mainly containing a fragrance component, and silicone such as dimethylsiloxane.
• Antifoaming agent particles containing an antifoaming substance such as Moreover, you may mix with the surfactant particle
• the detergent particles produced according to the present invention preferably have the following physical properties.
• the physical properties of the detergent particle group are measured using the particle group that has passed through a sieve having a mesh size of 710 ⁇ m (excluding the yield). The measurement of yield, fluidity, and bulk density is performed between 1 hour and 2 hours after the production of particles.
• the average particle size, caking resistance (passage rate), and stain resistance of nonionic surfactants are evaluated using samples stored at 20 to 30 ° C. for 1 to 3 days in a sealed container. To do.
• the yield of the detergent particle group is calculated by dividing the mass of the sample that has passed through the sieve having an opening of 710 ⁇ m by the mass of the entire sample.
• the yield is preferably 80% or more, more preferably 90% or more, and still more preferably 95% or more.
• the average particle size of the detergent particles is preferably 75 ⁇ m or more, more preferably 250 ⁇ m or less, and therefore preferably 75 to 250 ⁇ m, more preferably 100 to 250 ⁇ m, and still more preferably 125 to 180 ⁇ m.
• the bulk density of the detergent particles is preferably 400 to 1000 g / L, more preferably 400 to 900 g / L, further preferably 450 to 850 g / L, and still more preferably 500 to 800 g / L.
• This bulk density is an apparent density defined in JIS K3362: 2008.
• the average particle size of the detergent particles and powdered sodium carbonate is measured by a method using a sieve. After vibrating for 5 minutes using the sieves in Appendix 1 and Appendix 2 of JISZ ⁇ 8801: 2006, the median diameter is calculated from the weight fraction according to the size of the sieve mesh.
• the bulk density when the bulk density is controlled as desired, for example, a method of blending powder raw materials having various bulk densities as a powder raw material other than sodium carbonate in the step (A) can be used.
• the fluidity of the detergent particles is preferably 10 seconds or less, more preferably 9 seconds or less, and still more preferably 8 seconds or less as the flow time. Further, according to the present invention, a product of 4 seconds or more, further 6 seconds or more can be obtained.
• the flow time is 100 mL from a hopper for measuring bulk density defined by JIS K3362, ie, a funnel (also called a hopper) shown as an example of an apparent density measuring device in the section of apparent density of JIS K3362: 2008. This is the time required for the detergent particles to flow out.
• ⁇ Caking resistance and non-ionic surfactant stain resistance are evaluated as follows. Using a filter paper (No. 2 manufactured by ADVANTEC), make a box without a top with a length of 10.2 cm, a width of 6.2 cm, and a height of 4 cm, and fix the four corners with a stapler. In advance, two lines are drawn with an oil marker on the diagonal line of the bottom portion to intersect. A 200 m sample is placed in this box, sealed in an acrylic case, and left in a thermostatic oven at a temperature of 30 ° C. for 7 days to determine caking resistance and non-ionic surfactant stain resistance.
• a filter paper No. 2 manufactured by ADVANTEC
• Judgment of the nonionic surfactant for spotting is performed by visually observing the bleeding of the oil-based marker drawn on the bottom after the sample is discharged.
• the evaluation is 1 to 5 ranks, and the status of each rank is as follows. Rank 1: There is no blur. Rank 2: Part of the line bleeds and cilia appear. Rank 3: The line bleeds almost entirely, and the average line thickness is less than 2.0 times. Rank 4: The whole line The average line thickness is 2.0 times or more and less than 3.0 times. Rank 5: The entire line is blurred and the average line thickness is 3.0 times or more.
• the evaluation of the degree of bleeding is ranked 1, 2, and 3 as acceptable products. Examples The following examples describe the practice of the present invention. The examples are illustrative of the invention and are not intended to limit the invention.
• the surfactant compositions used in Examples 1 to 8, 16 to 24, 28 to 31, and Comparative Examples 1 to 2 and 5 to 9 are a nonionic surfactant and an aqueous solution of sodium polyacrylate having an effective content of 40%. Water was mixed so as to have a mass ratio shown in Tables 1 and 2, and the temperature was adjusted to 60 ° C. to obtain. However, in Comparative Example 1, water was adjusted by evaporating water under the condition of 60 ° C. after the production. In Examples 28 to 31 and Comparative Examples 7 and 9, the acrylic acid type polymer shown in the table was used in place of sodium polyacrylate.
• the surfactant compositions used in Examples 9 to 15 and Comparative Examples 3 to 4 were a 40% effective sodium polyacrylate aqueous solution and a 30% effective anionic surfactant (non-ionic surfactant). (LAS-Na, AS-Na, ES-Na, or ⁇ -SFE) aqueous solution and predetermined water were added to the mass ratio shown in Tables 1 and 2 and mixed. The temperature was adjusted to 60 ° C. However, in Comparative Examples 3 to 4, water was adjusted by evaporating water at 60 ° C. after the production. Examples 19 and 23 to 24 were prepared by neutralizing fatty acids with 48% caustic soda in the surfactant composition. Further, Example 20 was prepared by adding a predetermined amount of polyethylene glycol into the surfactant composition.
• Example 25 the surfactant composition was not used, and the nonionic surfactant and the polyacrylic sodium aqueous solution having an effective content of 20% were used separately without being mixed. Each temperature was adjusted to 60 ° C.
• Example 26 was prepared by adding a sodium polyacrylate aqueous solution having an effective content of 40% and a nonionic surfactant aqueous solution separately to powdered sodium carbonate without mixing. The temperature of the sodium polyacrylate aqueous solution and the nonionic surfactant aqueous solution was adjusted to 60 ° C., respectively.
• Example 27 an anionic surfactant (LAS-Na) aqueous solution having an effective content of 30% and a surfactant composition (an aqueous solution containing a nonionic surfactant, polyacrylic sodium and water, the preparation method was carried out) The same as in Example 1 etc.) was added separately to powdered sodium carbonate without mixing. The temperature of the aqueous anionic surfactant solution and the surfactant composition was adjusted to 60 ° C., respectively.
• LAS-Na anionic surfactant
• a surfactant composition an aqueous solution containing a nonionic surfactant, polyacrylic sodium and water, the preparation method was carried out
• Examples 1 to 24, 28 to 31, Comparative Examples 1 to 9 100 parts by weight of powdered sodium carbonate preheated to 50 ° C. in a Redige mixer (manufactured by Matsubo Co., Ltd., with a 20 L jacket), and when mixed, sodium bicarbonate, sodium sulfate and sodium tripolyphosphate are listed in Table 2, respectively. Then, the rotation of the main shaft (the rotation speed of the main shaft: 80 r / min, the fluid number of the stirring blade: 1.07) was started. The chopper (with crushing blades) was not rotated, and hot water at 60 ° C. was passed through the jacket at 10 L / min. After stirring for 1 minute by rotation of the main shaft, a surfactant composition at 60 ° C.
• Example 25 100 parts by weight of powdered sodium carbonate preheated to 50 ° C. was put into a Redige mixer (manufactured by Matsubo Co., Ltd., with a 20 L jacket) and the main shaft (rotation speed of main shaft: 80 r / min, fluid number of stirring blade: 1. The rotation of 07) was started. The chopper (with crushing blades) was not rotated, and hot water at 60 ° C. was passed through the jacket at 10 L / min. After stirring for 1 minute by rotation of the main shaft, an aqueous 20% polyacrylic acid solution at 60 ° C. was added over 1 minute so as to have the mass parts shown in Table 2, followed by a non-ionic interface at 60 ° C. The activator was charged over 1 minute, then mixed for 6 minutes and then discharged. The physical properties of the resulting detergent particles are as shown in Table 2.
• Example 26 100 parts by weight of powdered sodium carbonate preheated to 50 ° C. was put into a Redige mixer (manufactured by Matsubo Co., Ltd., with a 20 L capacity jacket), and the main shaft (rotation speed of main shaft: 80 r / min, fluid number of stirring blade: 1. The rotation of 07) was started. The chopper (with crushing blades) was not rotated, and hot water at 60 ° C. was passed through the jacket at 10 L / min. After stirring for 1 minute by rotation of the main shaft, an aqueous polyacrylic acid solution with an effective content of 40% at 60 ° C. was added over 1 minute so as to be the mass part shown in Table 2, followed by a nonionic interface at 60 ° C. The aqueous activator solution was charged over 1 minute, then mixed for 6 minutes and then discharged. The physical properties of the resulting detergent particles are as shown in Table 2.
• Example 27 100 parts by weight of powdered sodium carbonate preheated to 50 ° C. was put into a Redige mixer (manufactured by Matsubo Co., Ltd., with a 20 L jacket) and the main shaft (rotation speed of main shaft: 80 r / min, fluid number of stirring blade: 1. The rotation of 07) was started. The chopper (with crushing blades) was not rotated, and hot water at 60 ° C. was passed through the jacket at 10 L / min. After stirring by rotating the main shaft for 1 minute, an anionic surfactant aqueous solution having an effective content of 60% at 60 ° C. was added over 1 minute so as to be part by mass shown in Table 2, followed by an interface at 60 ° C. The activator composition was charged over 1 minute, then mixed for 6 minutes and then discharged. The physical properties of the resulting detergent particles are as shown in Table 2.
• Example 32 100 parts by weight of powdered sodium carbonate preheated to 50 ° C. was put into a Redige mixer (manufactured by Matsubo Co., Ltd., with a 20 L jacket) and the main shaft (rotation speed of main shaft: 80 r / min, fluid number of stirring blade: 1. The rotation of 07) was started. The chopper (with crushing blades) was not rotated, and hot water at 60 ° C. was passed through the jacket at 10 L / min. After stirring for 1 minute by rotation of the main shaft, a nonionic surfactant at 60 ° C. was added over 1 minute, and then an aqueous solution of polyacrylic sodium with an effective content of 20% at 60 ° C. The mixture was charged over 1 minute, mixed for 6 minutes, and then discharged. The physical properties of the resulting detergent particles are as shown in Table 2.
• Tables 1 and 2 are as follows. Also. In the table, “*” means that measurement is not possible because it does not flow out of the bulk density measurement hopper defined by JIS K3362.
• the “component used in the liquid state” means a mixture of sodium carbonate in the liquid state in the step (A), and the “powder component” means a mixture of sodium carbonate in the powder state in the step (A). .
• Acrylic acid-maleic acid (3/7) copolymer: sodium salt (70 mol% neutralized), monomer ratio: acrylic acid / maleic acid 3/7 (molar ratio), average molecular weight 70000 (constitutes polymer) The proportion of acrylic acid or its salt constituting units to all monomer constituting units is 30 mol%)
• Acrylic acid-maleic acid (7/1) copolymer: sodium salt (70 mol% neutralized), monomer ratio acrylic acid / maleic acid 7/1 (molar ratio), average molecular weight 15,000 (polymer) 88% by mole of the structural unit of acrylic acid or a salt thereof with respect to all monomer structural units constituting
• Nonionic surfactant 1 Average ethylene oxide (hereinafter referred to as EO) to primary alcohol having 12 to 14 carbon atoms 6 mol added non-ionic surfactant 2: 21 to 14 carbon average primary EO added 21 mol non-ionic surfactant 3: 12 to 14 carbon primary alcohol A block addition of 9 mol on average, 2 mol on average of propylene oxide, and 9 mol on average for EO ⁇ LAS-Na: sodium alkylbenzene sulfonate with alkyl group of 12 to 14 carbon atoms ⁇ AS-Na : Sodium alkyl sulfate ester alkyl group having 12 to 16 carbon atoms ES-Na: Kao Corporation, trade name: Emar 170J EO addition

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