EP1624049A2 - Gleitfähigkeitsverbesserer zur anwendung beim waschen - Google Patents

Gleitfähigkeitsverbesserer zur anwendung beim waschen Download PDF

Info

Publication number
EP1624049A2
EP1624049A2 EP04733116A EP04733116A EP1624049A2 EP 1624049 A2 EP1624049 A2 EP 1624049A2 EP 04733116 A EP04733116 A EP 04733116A EP 04733116 A EP04733116 A EP 04733116A EP 1624049 A2 EP1624049 A2 EP 1624049A2
Authority
EP
European Patent Office
Prior art keywords
detergent composition
washing
laundry
smoothness
creamy
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04733116A
Other languages
English (en)
French (fr)
Other versions
EP1624049A4 (de
Inventor
Hiroaki c/o Kao Corporation WARITA
Yoshinobu c/o Kao Corporation IMAIZUMI
Katsuhiko c/o Kao Corporation KASAI
Shu c/o Kao Corporation YAMAGUCHI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kao Corp
Original Assignee
Kao Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kao Corp filed Critical Kao Corp
Publication of EP1624049A2 publication Critical patent/EP1624049A2/de
Publication of EP1624049A4 publication Critical patent/EP1624049A4/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02Inorganic compounds ; Elemental compounds
    • C11D3/04Water-soluble compounds
    • C11D3/06Phosphates, including polyphosphates
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/06Powder; Flakes; Free-flowing mixtures; Sheets
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/02Inorganic compounds ; Elemental compounds
    • C11D3/12Water-insoluble compounds
    • C11D3/1226Phosphorus containing

Definitions

  • the present invention relates to a laundry creamy smoothness improver and laundry creamy smoothness improver granules capable of avoiding cloth damages. More specifically, the present invention relates to an additive in washing on the bases of new technical ideas: The hand-washing ability is improved in that washing can be performed with a reduced power by improving the smoothness between items during hand-washing and that the rate of rubbing the laundry items (number of rubbings per unit time) is likely to be increased, and the damages of the items to be washed due to rubbing between the laundry items and the cut damages and rubbing damages generated on hands due to rubbing hands with each other are suppressed. In addition, the present invention relates to a detergent composition containing the above creamy smoothness improver or the above creamy smoothness improver granules.
  • the present invention relates to a process for hand-washing in the presence of a potassium metaphosphate.
  • the present invention relates to a method of avoiding cloth damages by, for instance, increasing smoothness between the fibers against the damages of fibers which are causative of loss of well kept shape due to mechanical power such as stirring in washing machines.
  • Washing methods can be roughly classified into hand-washing and washing-machine washing. Recently, with the widespread of washing-machines, washing-machine washing tends to be increased. However, there are still needs for hand-washing from the viewpoint of easy removal of dirt stains and economic advantages.
  • Japanese Unexamined Patent Laid-Open No. Hei 10-504056 discloses a method of improving irritability to skin during hand-washing by formulating an anionic surfactant, a cationic surfactant and a nonionic surfactant in a specified ratio.
  • highly foamable surfactants such as LAS and AS for increasing foam
  • a nonionic surfactant such as polyoxyethylene alkyl ether for regulating bubbles
  • soaps for improvement in foam off during rinsing have been generally known.
  • Japanese Examined Patent Publication No. Hei 8-13987 discloses a detergent composition having excellent dissolubility, foaming ability and rinsing ability by containing an anionic surfactant, a specified nonionic surfactant and a fatty acid soap in a specified ratio.
  • the present invention relates to:
  • the present invention relates to a laundry creamy smoothness improver capable of improving smoothness between items to be washed during hand-washing, so that washing can be performed with a reduced power, and hand-washing is facilitated by increasing the rate of rubbing laundry items (number of rubbings per unit time), and further capable of accomplishing a so-called hand-care effect in which the skin after drying after the hand-washing feels soft and smooth, and a so-called laundry item-care, in which loss of well kept shape due to mechanical power such as stirring in washing machines can be avoided; a creamy smoothness improver for hand-washing; a detergent composition containing these creamy smoothness improvers; and a process for hand-washing in which smoothness is improved when rubbing together the items to be washed with each other in hand-washing.
  • the present invention relates to laundry creamy smoothness improver granules in which improvement in smoothness between the items to be washed, in both cases where the laundry items are not soaked and the laundry items are soaked without generating insoluble remnants of the potassium metaphosphate and deposition on clothes, so that washing is performed with a reduced power, and hand-washing is facilitated by increasing rate of rubbing items to be washed (number of rubber per unit time); and a detergent composition containing the laundry creamy smoothness improver granules.
  • washing can be performed with a reduced power not only in hand-washing immediately after the addition but also in hand-washing after soaking for several minutes to several hours, whereby feel of hand-washing is enhanced, and the rate of rubbing items to be washed (number of rubbings per unit time) is increased.
  • the present invention has been perfected thereby.
  • the laundry creamy smoothness improver can be used by mixing the improver with a detergent, or can be directly added separately from the detergent upon washing.
  • the laundry creamy smoothness improver of the present invention contains a potassium metaphosphate.
  • a potassium metaphosphate Concrete examples thereof include the potassium metaphosphate alone or a mixture of the potassium metaphosphate with other base agents.
  • the potassium metaphosphate will be described later.
  • the other substances as referred to herein may be any substances generally used in a detergent composition without inhibiting the actions of the potassium metaphosphate.
  • sodium sulfate, zeolite, polyethylene glycol, an alkyl sulfate or the like can be properly used.
  • the amount of the potassium metaphosphate is preferably from 30 to 100% by weight, more preferably from 50 to 100% by weight of the laundry creamy smoothness improver.
  • the laundry creamy smoothness improver having the above constitution is composed of the potassium metaphosphate alone, the potassium metaphosphate can be directly used, or formed into fine powder by pulverization treatment.
  • the laundry creamy smoothness improver is a mixture of the potassium metaphosphate with other base agents
  • the laundry creamy smoothness improver can be prepared by mixing these components by a known method.
  • the laundry creamy smoothness improver of the present invention servers to improve smoothness between items to be washed during hand-washing, thereby facilitating hand-washing, to enhance feel in hand-washing, and to accomplish hand-care as well as laundry item-care. Accordingly, the present invention also relates to a creamy smoothness improver for hand-washing.
  • the form of the laundry creamy smoothness improver (hereinafter simply referred to as "creamy smoothness improver") is not particularly limited.
  • the form may be any agent forms such as powders, granules, liquids, or slurries/pastes. In order that the smoothness is quickly exhibited to laundry items thoroughly, it is preferable to use the creamy smoothness improver in the form of powder or granule.
  • the above creamy smoothness improver in the form of a granule or a capsule, there are some advantages such as the improvement in smoothness between the items to be washed is maintained in any cases where the laundry items are soaked and where the laundry items are not soaked without the generation of the insoluble remnants of the potassium metaphosphate and deposition on clothes, so that washing can be carried out with a reduced power, and the rate of rubbing the laundry items (number of rubbings per unit time) is increased, thereby facilitating the hand-washing.
  • the laundry creamy smoothness improver granules will be described later.
  • the creamy smoothness improver or creamy smoothness improver granules of the present invention are contained in the detergent composition, from the viewpoints of convenience upon use and dissolubility.
  • the above creamy smoothness improver is not limited by a composition, a form, a preparation process of the detergent composition used, and can exhibit its effects in all of the detergent compositions containing a solubilizing agent which will be described later.
  • the detergent composition of the present invention contains the above creamy smoothness improver and/or creamy smoothness improver granules, and a solubilizing agent. Since the detergent composition has the above features, the effects such as the washing liquid in which a detergent composition is dissolved upon washing becomes a lotion-like viscous solution, so that smoothness is also improved between the items to be washed in hand-washing, whereby washing can be performed with a reduced power, and hand-washing ability such as tendency of increasing the rate of rubbing items to be washed is improved, and further hand-care effects, in which the dried skin after the hand-washing is felt to be tender and smooth, and laundry item-care effects are exhibited.
  • the detergent composition may be in any agent forms such as powders, granules, liquids or pastes, or may be molded into an aggregate, a tablet or the like by a secondary processing. In order to quickly exhibit smoothness in the laundry items thoroughly, it is preferable that the detergent composition is in the form of powder or granule.
  • washing liquid refers to a liquid for performing washing such as one in which the above detergent composition is dissolved or suspended.
  • the potassium metaphosphate usable in the present invention refers to a substance which has very low solubility in water, but shows water solubility by salt exchange with a solubilizing agent (a compound containing a sodium ion source, a lithium ion source, or an ammonium ion source).
  • a solubilizing agent a compound containing a sodium ion source, a lithium ion source, or an ammonium ion source.
  • the term potassium metaphosphate as used herein includes those in which potassium is partially substituted by sodium, lithium or the like.
  • the potassium metaphosphate is generally prepared by the process represented as follows: nKH 2 PO 4 ⁇ (KPO 3 ) n + nH 2 O
  • potassium dihydrogenphosphate KH 2 PO 4
  • a potassium metaphosphate a potassium dihydrogenphosphate
  • Manufactured articles of various degrees of polymerization are obtained depending upon factors such as difference in heating temperature and heating time. The higher the temperature of the dehydration reaction, the larger the degree of polymerization.
  • the baking temperature during the dehydration reaction is preferably 400°C or higher, more preferably 500°C or higher, even more preferably 600°C or higher, from the viewpoint of smoothness after the immersion, and the baking temperature is preferably 1500°C or lower, more preferably 1300°C or lower, even more preferably 1200°C or lower, from the viewpoint of energy consumption.
  • the molecular weight of the potassium metaphosphate is preferably 10000 or more, more preferably 100000 or more, even more preferably 200000 or more, even more preferably 500000 or more, from the viewpoint of improvement in hand-washing ability.
  • the molecular weight of the potassium metaphosphate is preferably 50000000 or less, more preferably 20000000 or less, from the viewpoint of availability.
  • the potassium metaphosphate does not have any particular limitations in an upper limit in its molecular weight, as long as the potassium metaphosphate shows water solubility in the presence of a solubilizing agent. The larger the molecular weight, the higher the effect of improving the hand-washing ability.
  • potassium metaphosphate has a K/P molar ratio of preferably less than 1, more preferably (a value excluding 1) to 0.8, even more preferably from 0.999 to 0.9, even more preferably from 0.999 to 0.94, even more preferably from 0.995 to 0.96, even more preferably from 0.99 to 0.98, from the viewpoint of smoothness after the immersion.
  • the K/P molar ratio as referred to herein is a value determined by the determination method described in Examples set forth below.
  • the content of the potassium metaphosphate of the detergent composition is preferably 0.5 parts by weight or more, more preferably 1 part by weight or more, even more preferably 3 parts by weight or more, even more preferably 5 parts by weight or more, even more preferably 7 parts by weight or more, even more preferably 10 parts by weight or more, based on 100 parts by weight of the detergent composition, from the viewpoint of improvement in hand-washing ability.
  • the content of the potassium metaphosphate of the detergent composition is preferably 30 parts by weight or less, more preferably 20 parts by weight or less, based on 100 parts by weight of the detergent composition, from the viewpoint of maintaining easy handling of the items to be washed after washing.
  • the amount of the potassium metaphosphate formulated is increased according to the increase in the amount of the nonionic surfactant in the detergent composition and the increase in the ratio to the amount of the nonionic surfactant and the entire surfactant components of the detergent composition.
  • the concentration of the potassium metaphosphate in water is preferably 15 mg/L or more, more preferably 30 mg/L or more, even more preferably 60 mg/L or more, from the viewpoint of obtaining excellent hand-washing ability. Also, the concentration is preferably 3000 mg/L or less, more preferably 1500 mg/L or less, even more preferably 1000 mg/L or less, from the viewpoint of easy handling of the items to be washed after washing. It is preferable that the above concentration of potassium phosphate in water is increased according to the lowering of the liquor ratio, which is a weight ratio of water to laundry items, i.e.
  • the potassium metaphosphate is extremely hardly soluble in water, but shows water solubility in the presence of a solubilizing agent.
  • the solubilizing agent as used herein refers to a compound containing a sodium ion source and/or a lithium ion source and/or or an ammonium ion source, wherein the sources can substitute potassium of the potassium metaphosphate.
  • the potassium metaphosphate dissolves even when the detergent composition is dissolved in water, so that the washing liquid becomes a lotion-like viscous solution, whereby consequently giving advantages such as smoothness between the items to be washed is improved, and the hand-washing is improved.
  • the above solubilizing agent includes all those sodium ion sources and/or lithium ion sources and/or or ammonium ion sources which replace potassium of the potassium metaphosphate.
  • Even more useful solubilizing agents are inorganic salts and organic salts of sodium, lithium and ammonium, including, for instance, sodium carbonate, sodium chloride, sodium sulfate, sodium sulfite, sodium carboxylates such as sodium citrate, sodium phosphate, sodium silicate, sodium salts of polycarboxylic acids, sodium salts of polysulfonic acids, lithium halides and lithium sulfate.
  • inorganic salts and organic salts of sodium are most preferable.
  • a salt form of a surfactant or a fatty acid, a metal ion capturing agent or the like can also serve as a solubilizing agent.
  • the above potassium metaphosphate shows water solubility by replacing potassium ion in the potassium metaphosphate with sodium ion and/or lithium ion and/or ammonium ion, it is desired to use the potassium metaphosphate in a state that can be dissolved in order to obtain an excellent hand-washing ability.
  • the amount of the solubilizing agent is one that can supply sodium ions and/or lithium ions and/or ammonium ions in an amount that can completely replace potassium ions in the potassium metaphosphate contained in the washing liquid from the viewpoint of economic advantages.
  • the amount of the solubilizing agent is preferably 0.5 times equivalent or more, more preferably 1 time equivalent or more, even more preferably 2 times equivalent or more, even more preferably 3 times equivalent or more, when the amount that can supply sodium ions and/or lithium ions and/or ammonium ions in the same amount as that of potassium ions in the potassium metaphosphate is defined as 1 time equivalent.
  • the amount of the solubilizing agent is preferably 400 times equivalent or less, more preferably 200 times equivalent or less, even more preferably 100 times equivalent or less.
  • the amount of the solubilizing agent is preferably 30 times equivalent or less, more preferably 20 times equivalent or less, from the viewpoint of even more maintaining the effect of improving smoothness.
  • the detergent composition of the present invention can contain a surfactant and/or a builder.
  • the surfactant includes, for instance, anionic surfactants and nonionic surfactants.
  • anionic surfactants such as alkylbenzenesulfonates, alkyl ether or alkenyl ether sulfates, alkyl or alkenyl sulfuric esters, ⁇ -olefinsulfonates, alkanesulfonates, N-acylamino acid-type surfactants, alkyl ether or alkenyl ether carboxylates, amino acid-type surfactants, alkyl or alkenyl phosphoric esters, or salts thereof; and nonionic surfactants such as polyoxyalkylene alkyl (or alkenyl) ethers, polyoxyethylene alkyl phenyl ethers, higher fatty acid alkanolamides or alkylene oxide adducts, sucrose fatty acid esters, alkyl glycosides and fatty acid g
  • alkylbenzenesulfonates alkyl ether sulfates, alkyl sulfuric esters are preferable, even more preferably alkylbenzenesulfonates, from the viewpoint of enhancing the effect of smoothness.
  • the content of the above anionic surfactant and the nonionic surfactant is preferably 5% by weight or more, more preferably 10% by weight or more, even more preferably 12% by weight or more, even more preferably 15% by weight or more, even more preferably 17% by weight or more, of the detergent composition, from the viewpoint of washing performance.
  • the content of the above anionic surfactant and the nonionic surfactant is preferably 40% by weight or less, more preferably 35% by weight or less, even more preferably 30% by weight or less, even more preferably 26% by weight or less, of the detergent composition, from the viewpoint of powder properties.
  • a surfactant such as a betain-type amphoteric surfactant, a phosphoric ester-based surfactant, a soap, or an cationic surfactant in a proper amount.
  • the builder includes metal ion capturing agents, alkalizing agents, anti-redeposition agents and the like.
  • the metal ion capturing agent includes ion exchange materials such as zeolites and crystalline silicates; water-soluble organic substances such as polymers such as polyacrylates and acrylic acid-maleic acid copolymers (salts); and chelating agents such as sodium tripolyphosphate, ethylenediaminetetraacetates, methylglycinediacetates and citrates.
  • ion exchange materials such as zeolites and crystalline silicates
  • water-soluble organic substances such as polymers such as polyacrylates and acrylic acid-maleic acid copolymers (salts)
  • chelating agents such as sodium tripolyphosphate, ethylenediaminetetraacetates, methylglycinediacetates and citrates.
  • Sodium carbonate and amorphous sodium silicate are not included in the metal ion capturing agent.
  • the alkalizing agent includes carbonates and silicates.
  • Amorphous sodium silicate is preferable from the viewpoint of enhancing the effect of smoothness.
  • the anti-redeposition agent includes carboxymethyl cellulose, polyethylene glycols and the like.
  • the amount of the builder formulated is preferably 5% by weight or more, more preferably 10% by weight or more, even more preferably 15% by weight or more, even more preferably 20% by weight or more, of the detergent composition, from the viewpoint of improving hand-washing ability.
  • the amount of the builder formulated is preferably 60% by weight or less, more preferably 40% by weight or less, even more preferably 30% by weight or less, of the detergent composition, from the viewpoint of the balance of the formulation.
  • the detergent composition of the present invention may contain a silicate or a phosphate, thereby giving an advantage that the effects of improving smoothness can be further improved.
  • silicates amorphous and crystalline silicates have been known, and any of those can be used. It is desired that those silicates having an SiO 2 /M 2 O ratio, wherein M is an alkali metal, of 1 or more, preferably 1.5 or more, more preferably 2 or more, and those silicates having an SiO 2 /M 2 O ratio of preferably 4 or less, more preferably 3 or less.
  • the even more preferable silicates are amorphous silicates, and JIS No. 1 Sodium Silicate or JIS No. 2 Sodium Silicate can be suitably used.
  • the amount of the silicate formulated is preferably 3% by weight or more, more preferably 5% by weight or more, even more preferably 7% by weight or more, of the detergent composition, from the viewpoint of hand-washing ability.
  • the amount of the silicate formulated is preferably 30% by weight or less, more preferably 20% by weight or less, of the detergent composition, from the viewpoint of suppressing the insoluble remnants during washing while maintaining an effect of improving smoothness at a high level.
  • the phosphate includes sodium tripolyphosphate, sodium pyrophosphate, sodium dihydrogenphosphate, sodium hydrogenphosphate, sodium phosphate and the like, and sodium tripolyphosphate is preferred.
  • the amount of the phosphate formulated is preferably 5% by weight or more, more preferably 10% by weight or more, even more preferably 15% by weight or more, of the detergent composition, from the viewpoint of hand-washing ability.
  • the amount of the phosphate formulated is preferably 40% by weight or less, more preferably 30% by weight or less, of the detergent composition, from the viewpoint of satisfying both of an effect of improving smoothness and detergency.
  • the metal ion capturing agent, the silicate and the phosphate are formulated in amounts mentioned above, there is an advantage that hand-washing ability is excellently maintained even when the amount of the potassium metaphosphate formulated is reduced.
  • the detergent composition of the present invention there can be formulated an enzyme, a perfume, a fluorescer, a pigment or the like in a proper amount.
  • the detergent composition of the present invention having the constitution as mentioned above can be prepared by appropriately blending each of the above-mentioned components by a known method.
  • the potassium metaphosphate contained in the detergent composition of the present invention shows water solubility in the presence of the solubilizing agent in water as mentioned above, it is preferable to reduce the water content during the preparation process and during storage.
  • the detergent composition is prepared by a spray-drying method, it is desired that the creamy smoothness improver and/or creamy smoothness improver granules are added in the granulation step, the surface modification step, the after-blending step or the like after the spray-drying step.
  • a washing liquid is prepared by separately adding a detergent composition containing components except for the creamy smoothness improver during hand-washing, and a creamy smoothness improver
  • a mixture of the potassium metaphosphate with other base agents as the creamy smoothness improver for the purpose of suppression of the generation of doughy mass during the dissolution.
  • solubilizing agent may be contained in the creamy smoothness improver and/or creamy smoothness improver granules and/or in the detergent composition, so that the solubilizing agent is not necessarily contained in the detergent composition.
  • detergent composition examples include those detergent compositions having the compositions and prepared by a process described in Tokkyocho Koho: Shuchi Kanyo Gijutsu Shu (Clothes Powder Detergent: Japanese Patent Office), 10(1998)-25(7159).
  • laundry creamy smoothness improver granules of the present invention resides in that the laundry creamy smoothness improver granules contain a potassium metaphosphate, and are in the form of granules.
  • the laundry creamy smoothness improver granules of the present invention have the above features, there are some advantages that excellent smoothness is maintained between the items to be washed without generation of insoluble remnants of the potassium metaphosphate and deposition on laundry items, in a case where the laundry items are soaked or even in a case where the laundry items are soaked for a long period of time, so that washing can be performed with a reduced power, and a rate of rubbing the laundry items is likely to be increased, whereby hand-washing is facilitated.
  • cloth damages can be avoided by increasing the smoothness between the fibers in order to meet the problem of the fiber damages which are causative of loss of well kept shape or the like by a mechanical power such as stirring.
  • the present invention also relates to creamy smoothness improver granules for hand-washing.
  • the granules as referred to in the present invention means those obtained by granulating a potassium metaphosphate alone, or obtained by granulating a mixture of a potassium metaphosphate with a binder substance and/or other components.
  • the shapes of the granules include particles, capsules and the like.
  • the potassium metaphosphate may be the same one as that used in the above creamy smoothness improver.
  • the potassium metaphosphate formulated in the granules has an average particle size of preferably 0.5 ⁇ m or more, more preferably 1 ⁇ m or more, even more preferably 5 ⁇ m or more, even more preferably 10 ⁇ m or more, even more preferably 30 ⁇ m or more, from the viewpoint of easy handling.
  • the potassium metaphosphate has an average particle size of preferably 300 ⁇ m or less, more preferably 200 ⁇ m or less, even more preferably 100 ⁇ m or less, from the viewpoints of granulation property and dissolubility (suppression of insoluble remnants and deposition to laundry items).
  • the method for adjusting the average particle size of the potassium metaphosphate to the above-mentioned range includes a method of carrying out pulverization treatment with a known pulverizer such as ATOMIZER manufactured by Fuji Paudal Co., Ltd. or PINMILL manufactured by Hosokawa Micron Corporation.
  • a known pulverizer such as ATOMIZER manufactured by Fuji Paudal Co., Ltd. or PINMILL manufactured by Hosokawa Micron Corporation.
  • the content of the potassium metaphosphate is preferably 10% by weight or more, more preferably 30% by weight or more, even more preferably 50% by weight or more, of the granules, from the viewpoint of formulation.
  • the content of the potassium metaphosphate is more preferably 95% by weight or less, even more preferably 90% by weight or less, even more preferably 80% by weight or less, of the granules, from the viewpoint of dissolubility.
  • the above potassium metaphosphate may be granulated alone or in admixture with a binder substance and other substances.
  • the binder substance is not particularly limited, so long as the binder is capable of binding the components constituting the laundry creamy smoothness improver granules with each other.
  • a water-soluble binder is preferable, from the viewpoint of dissolubility of the granules, even more preferably a thermoplastic water-soluble binder capable of solidifying at a temperature of 40°C or less and having a binding ability, from the viewpoint of storage stability.
  • a polyethylene glycol having an average molecular weight of from 2000 to 30000, preferably from 5000 to 15000, a saturated or unsaturated fatty acid having 8 to 18 carbon atoms, or the like is used, and even more polyethylene glycol is preferable.
  • binder substances can be used alone or in admixture.
  • the amount of the binder substance is preferably in a weight ratio of 0.05 times that of the potassium metaphosphate or more, more preferably 0.07 times or more, and the amount of the binder substance is 10 times that of the potassium metaphosphate or less, more preferably 4 times or less, even more preferably 3 times or less.
  • the other components in the granules may be any compound so long as they are generally used as a detergent composition without hindering the action of the potassium metaphosphate.
  • a solubilizing agent, a metal ion capturing agent, a silicate, a phosphate or the like can be properly used.
  • the solubilizing agent since the granules contain a solubilizing agent, there is an advantage that the solubilizing agent is not needed to be formulated in the main detergent itself.
  • the solubilizing agent may be the same as those mentioned above.
  • the process for preparing granules of the present invention is not particularly limited.
  • the granules can be prepared by agitation-tumbling granulation process, extrusion granulation process, spray cooling process, and the like.
  • the embodiments of the agitation-tumbling granulation process include, for instance, a process including the steps of mixing a sodium metaphosphate, a binder substance and other components such as a solubilizing agent (sodium source and/or lithium source), heating the components to melt the binder substance, granulating the mixture, and cooling the granules; a process including the steps of adding a dissolved binder substance to a sodium metaphosphate and other components such as a solubilizing agent (sodium source and/or lithium source) while stir-mixing the sodium metaphosphate and the other components, and granulating the mixture; a process including the steps of adding an aqueous binder solution to a sodium metaphosphate and other components such as a solubilizing agent (s
  • extrusion granulation process include, for instance, a process including the steps of melting and mixing a sodium metaphosphate, a binder substance and other components such as a solubilizing agent (sodium source and/or lithium source), extruding and granulating the mixture through an extruder-granulator; a process including a step of melting and mixing a sodium metaphosphate, a binder aqueous solution and other components such as a solubilizing agent (sodium source and/or lithium source), extruding the mixture through an extruder-granulator, and drying the extruded product; and the like.
  • a solubilizing agent sodium source and/or lithium source
  • the embodiments of spray-cooling process include, for instance, a process including the steps of melting and mixing a sodium metaphosphate, a binder substance and other components such as a solubilizing agent (sodium source and/or lithium source), spraying the mixture through a nozzle to a low-temperature space to give granules; and the like.
  • a solubilizing agent sodium source and/or lithium source
  • the water content during granulation is controlled.
  • a thermoplastic water-soluble binder capable of solidifying at a temperature of 40°C or less and having binding ability.
  • the water-soluble binder includes a polyethylene glycol having an average molecular weight of from 2000 to 30000, preferably from 5000 to 15000, a saturated or unsaturated fatty acid having 8 to 18 carbon atoms and the like, and even more polyethylene glycol is preferable.
  • water and an aqueous binder solution are used as binder substances, it is preferable that the binder substance is sufficiently dried in the subsequent step.
  • mixers usable in the granulation include those for the agitation-tumbling granulation process, for instance, High-Speed Mixer manufactured by Fukae Powtec Corp., PLOUGH SHARE Mixer manufactured by PACIFIC MACHINERY & ENGINEERING Co., LTD. and the like; extrusion granulators such as PELLETER DOUBLE, Twin Dome Gran manufactured by Fuji Paudal Co., Ltd.; and the like.
  • the granules obtained by the above process may be subjected to size adjustment by disintegration, spheroidization or the like where necessary, for the purposes of improving external appearance and yield after the granulation.
  • the devices used in disintegration include Power Mill manufactured by K.K. Dalton, Flash Mill manufactured by Fuji Paudal Co., Ltd., Fitz Mill manufactured by Fitzpatrick (USA), COMIL manufactured by Comil (Canada), Speed Mill manufactured by Okada Seiko K.K., and the like.
  • the spheroidization devices include Marumerizer manufactured by Fuji Paudal Co., Ltd. When the above thermoplastic water-soluble binder is used, the temperature for feeding the binder to the disintegrator is preferably cooled to an ambient temperature or so.
  • the size-adjusted granules may be adjusted to a given particle size by classification in order to reduce fine powder and/or coarse granules.
  • the fine powder and/or coarse granules generated by classification may be, for instance, pulverized to be used as a raw material for the granules, or re-dissolved to be used as a raw material, whereby its yield can be increased.
  • the average particle size of the granules of the present invention is preferably 100 ⁇ m or more, more preferably 150 ⁇ m or more, even more preferably 200 ⁇ m or more, from the viewpoint of sustainability of the effect of improving hand-washing property. Also, the average particle size is preferably less than 2000 ⁇ m, more preferably less than 1500 ⁇ m, even more preferably less than 1000 ⁇ m, from the viewpoints of external appearance and dissolubility.
  • those granules which are spherical are most preferable, from the viewpoints of external appearance and classification property.
  • those having a ratio of an extrusion diameter to a length of nearly 1 are preferred.
  • the granules having a particle size distribution such that the granules are in even sizes are preferred from the viewpoint of external appearance.
  • the water content in the granules in a final manufactured article is preferably 10% by weight or less, more preferably 5% by weight or less, even more preferably 1% by weight or less, from the viewpoint of storage stability.
  • the creamy smoothness improver granules prepared by the process described above can be contained in the detergent composition in the same manner as the above creamy smoothness improver.
  • the detergent composition containing the creamy smoothness improver and/or the creamy smoothness improver granules of the present invention having the above constitutions are used, effects such as improvement in smoothness between items to be washed is maintained, without generating insoluble remnants of the potassium metaphosphate and deposition on laundry items in either a case where the laundry items are not soaked or a case where the laundry items are soaked for a long period of time, so that hand-washing is facilitated without hindering the detergency, and a satisfactory hand-care is accomplished are exhibited.
  • the process for hand-washing of the present invention is a process including the step of carrying hand-washing under the conditions of a concentration of a potassium metaphosphate in water of 30 mg/L or more and a liquor ratio of 2 or more.
  • the process includes, for instance, a process including the steps of adding a potassium metaphosphate to a washing liquid as a part of detergent components or separately from the detergent components, and carrying out hand-washing; and the like.
  • Specific embodiments include a process including the step of adding the above creamy smoothness improver or creamy smoothness improver granules to a washing liquid as a part of detergent components or separately from the detergent components, and carrying out hand-washing.
  • the washing liquid becomes a lotion-like viscous liquid, so that the improvement in the smoothness between the items to be washed is felt, and that dissolubility of the potassium metaphosphate and its adsorption to the surface of the items to be washed are accelerated, with the increase in the liquor ratio, so that the improvement of the smoothness between the items to be washed is realized.
  • the concentration of the potassium metaphosphate in water is preferably 15 mg/L or more, more preferably 30 mg/L or more, even more preferably 60 mg/L or more, from the viewpoint of improving smoothness.
  • the concentration of the potassium metaphosphate is preferably 3000 mg/L or less, more preferably 1500 mg/L or less, even more preferably 1000 mg/L or less, from the viewpoint of easy handling of the items to be washed after washing.
  • the concentration of the potassium metaphosphate in water is increased according to the lowering of the liquor ratio, the increase in the water hardness of the washing liquid, and the increase in the amount of the nonionic surfactant and the increase in the ratio to the amount of the nonionic surfactant and the entire surfactant components of the detergent composition.
  • the liquor ratio which is a weight ratio of water to laundry items is preferably 2 or more, more preferably 3 or more, even more preferably 4 or more, even more preferably 5 or more, from the viewpoints of dissolubility and adsorption to items to be washed.
  • the liquor ratio is preferably 20 or less, more preferably 15 or less, from the viewpoint of easy hand-washing.
  • cloth damages can be avoided by increasing smoothness between the fibers against the damages of fibers which are causative of loss of well kept shape in mechanical power such as stirring in washing with a washing machine as well as hand-washing, whereby a so-called “laundry item-care effects" can be exhibited.
  • the increase in viscosity of the washing liquid by the formulation of the potassium metaphosphate is a causative factor for exhibiting viscidity, thereby consequently improving the smoothness. Therefore, the hand-washing property can be quantitatively evaluated by the determination of viscosity of the washing liquid.
  • a 8.2 L polypropylene washtub manufactured by YAZAKI having a diameter of 30 cm and a depth of 13 cm was charged with 2 liters of hard water (Ca/Mg molar ratio: 7/3) corresponding to 89.3 mg CaCO 3 /liter, temperature-controlled to 25°C, and a detergent composition weighed so as to be 15 g is supplied into the water, and the water is continued to be stirred with a vigorousness that the water is not spilled from the washtub.
  • a 100% cotton T-shirt (white, manufactured by Gunze, L size) is soaked in the washing liquid in the washtub so that an entire T-shirt is sufficiently soaked.
  • the breast portions of the T-shirt are held with both hands from the back side of the T-shirt, and the breast portions of the T-shirt are rubbed with each other.
  • the portions are rubbed together upon taking the shirt out of the washing liquid.
  • the rubbed portions are temporarily soaked in the washing liquid. The easiness in rubbing when the portions are rubbed together is judged in Ranks 1 to 5 as smoothness.
  • the smoothness is defined to have a rank of 1.
  • the state of each rank is as follows.
  • Table 1 shows the composition of the detergent composition obtained in each of Examples and Comparative Examples.
  • the metal ion capturing ability of the metal ion capturing agents was determined for each of the cases where the metal ion capturing agent is an ion exchange material and where the metal ion capturing agent is a chelating agent in accordance with the following methods.
  • a 0.1 g sample of an ion exchange material was accurately weighed and added to 100 ml of a calcium chloride aqueous solution (500 ppm concentration, when calculated as CaCO 3 ), and thereafter the mixture was stirred at 25°C for 60 minutes. Thereafter, the mixture was filtered with Membrane Filter (Advantech, made of nitrocellulose) with 0.2 ⁇ m pore size. The Ca content contained in 10 ml of the filtrate was determined by an EDTA titration, and a calcium ion exchange capacity (cationic exchange capacity) of the ion exchange material was calculated from the titer.
  • a calcium chloride aqueous solution 500 ppm concentration, when calculated as CaCO 3
  • a standard calcium ion solution was prepared and used for obtaining a calibration curve showing the relationships between the logarithm of the calcium ion concentration and the voltage, as shown in Figure 1.
  • the dropwise addition was carried out by adding 0.1 to 0.2 ml each of the CaCl 2 aqueous solution, and voltage reading was taken at each addition to obtain a calcium ion concentration from the calibration curve given in Figure 1.
  • the calcium ion concentration of the upper line corresponding to the amount A of samples added dropwise shown in Figure 2 was defined as calcium ion capturing ability.
  • the molecular weight of calcium metaphosphate refers to a weight-average molecular weight.
  • the molecular weight of calcium metaphosphate was determined according to gel permeation chromatography (GPC) method under the following conditions, and calculated using a calibration curve of polyethylene glycol.
  • GPC gel permeation chromatography
  • Column: GMPWXL + GMPWXL, manufactured by Tosoh Corporation Eluent: 0.02 M Phosphate buffer/acetonitrile 90/10 (volume ratio)
  • Sample Concentration, Amount 0.1% by weight (solubilizing agent: sodium tripolyphosphate: 0.6% by weight), 100 ⁇ l Detector: Differential refractometer (RID)
  • the average particle size ( ⁇ m) of calcium metaphosphate was determined by using a laser scattering particle size distribution analyzer ("LA-920," manufactured by HORIBA, Ltd.) on a volume basis under the conditions of a refractive index of 1.2, ultrasonic intensity of 7, irradiation time for ultrasonic wave of 1 minute, and a stirring rate of 4.
  • the sample (calcium metaphosphate) was dispersed in ion-exchanged water as a dispersion medium at 25°C.
  • the average particle size as used herein refers to a median diameter.
  • the mixture was allowed to stand in the same manner while changing the time periods for allowing the mixture to stand from 20 minutes to 180 minutes in an increment of 10 minutes.
  • the evaluation method was carried out under the following conditions:
  • a fully automatic washing machine (Toshiba, trade name: "AW-D802VP") was furnished. With setting the washing water level to 45 L, the washing machine was charged with a total of 10 pieces of Cotton T-shirts (about 2.2 kg). Further, a compact-type powder detergent (trade name: “ATTACK,” Kao Corporation) was supplied to the washing machine in accordance with a standard dosage, and a cycle of washing for 8 minutes, spin-drying for 3 minutes, rinsing in still water twice, and spin-drying for 3 minutes, and thereafter the T-shirts were dried with a drying machine. This washing cycle was repeated 5 times, to give a pre-treated cloth.
  • a fully automatic washing machine (Toshiba, "AW-D802VP") was furnished. With setting the washing water level to 45 L, the washing machine was charged with a total of 10 pieces of Cotton T-shirts (about 2.2 kg) containing the T-shirts sewed with the above MA test fabrics. Sixty grams of the detergent composition was supplied to the washing machine, and a washing cycle of washing for 8 minutes, spin-drying for 3 minutes, rinsing in still water twice, and spin-drying for 6 minutes, and thereafter the MA test fabrics were taken off from the T-shirts without drying. The number of frayed threads were counted.
  • the feel of the washing liquid in Examples was evaluated by judging the presence or absence of the smoothness in the degree of flow of the washing liquid when the washing liquid was scooped with hands to a height 30 cm above the washbowl and then dropped to the washbowl.
  • the feel of skin after drying was evaluated by hand-washing for about 5 minutes, washing off the washing liquid adhered to hands with tap water for 15 seconds, and allowing the hands to stay on a piece of towel (cotton 100%), for 10 seconds each for both front and back sides of the hands.
  • the feel of hands after absorbing the moisture on the front and back sides of the hands with the towel were evaluated on the basis of the following criteria.
  • the amount 370 kg of water, 200 kg of a 50% by weight aqueous sodium dodecylbenzenesulfonate, 50 kg of a 40% by weight aqueous No. 2 silicate, 100 kg of sodium carbonate, 147.5 kg of sodium sulfate, 5 kg of polyethylene glycol, 2.5 kg of a CBS fluorescer, and 125 kg of zeolite were mixed together, to give a homogeneous slurry. Thereafter, the obtained slurry was spray-dried, to give a detergent composition.
  • the smoothness of the resulting detergent composition is shown in Table 2. This detergent composition had a smoothness rank of 2. An average number of the frayed threads of the 5 pieces of MA test fabrics was 60/piece.
  • Example 3 In accordance with Example 3 described in Japanese Patent Gazette No. 3123757, 465 kg of water, 48 kg of a 50% by weight aqueous sodium dodecylbenzenesulfonate, 135 kg of a 40% by weight aqueous sodium polyacrylate, 120 kg of sodium carbonate, 60 kg of sodium sulfate, 9 kg of sodium sulfite, 3 kg of a CBS fluorescer, and 300 kg of zeolite were mixed together, to give a homogeneous slurry. Thereafter, the obtained slurry was spray-dried, to give base particles.
  • a mixed solution containing 100 parts by weight of the base particles, 15 parts by weight of a nonionic surfactant, 15 parts by weight of an anionic surfactant and 1 part by weight of polyethylene glycol was mixed with stirring, to give a detergent composition.
  • the smoothness of the resulting detergent composition is shown in Table 2. This detergent composition had a smoothness rank of 1. An average number of the frayed threads of the 5 pieces of MA test fabrics was 60/piece.
  • the amount 4.0 kg of the detergent composition obtained in Comparative Example 1 was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.04 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2. This detergent composition had a smoothness rank of 3, and gave very excellent feel to the skin after drying.
  • the amount 4.0 kg of the detergent composition obtained in Comparative Example 1 was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.4 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition had a smoothness rank of 5, and gave very excellent feel to the skin after drying.
  • the amount 4.0 kg of the resulting detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.40 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045), 12 g of cellulase and 12 g of protease were added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes while perfuming 12 g of a perfume, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition had a smoothness rank of 5, and gave very excellent feel to the skin after drying.
  • the amount 4.0 kg of the resulting detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.28 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition had a smoothness rank of 5, and gave very excellent feel to the skin after drying.
  • the amount 4.0 kg of the resulting detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.28 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045), 12 g of cellulase and 12 g of protease were added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes while perfuming 12 g of a perfume, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition had a smoothness rank of 5, and gave very excellent feel to the skin after drying.
  • the amount 370 kg of water, 200 kg of a 50% by weight aqueous sodium dodecylbenzenesulfonate, 50 kg of a 40% by weight aqueous No. 2 silicate, 100 kg of sodium carbonate, 130 kg of sodium sulfate, 5 kg of polyethylene glycol, 2.5 kg of a CBS fluorescer, 125 kg of zeolite and 17.5 kg of ethylenediaminetetraacetic acid were mixed together, to give a homogeneous slurry. Thereafter, the obtained slurry was spray-dried, to give a detergent composition.
  • the amount 4.0 kg of the resulting detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.28 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition had a smoothness rank of 5, and gave very excellent feel to the skin after drying.
  • the amount 370 kg of water, 200 kg of a 50% by weight aqueous sodium dodecylbenzenesulfonate, 50 kg of a 40% by weight aqueous No. 2 silicate, 100 kg of sodium carbonate, 135 kg of sodium sulfate, 5 kg of polyethylene glycol, 2.5 kg of a CBS fluorescer, 125 kg of zeolite and 12.5 kg of methylglycininediacetic acid were mixed together, to give a homogeneous slurry. Thereafter, the obtained slurry was spray-dried, to give a detergent composition.
  • the amount 4.0 kg of the resulting detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.28 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition had a smoothness rank of 5, and gave very excellent feel to the skin after drying.
  • the amount 325 kg of water, 200 kg of a 50% by weight aqueous sodium dodecylbenzenesulfonate, 125 kg of a 40% by weight aqueous No. 2 silicate, 70 kg of sodium carbonate, 147.5 kg of sodium sulfate, 5 kg of polyethylene glycol, 2.5 kg of a CBS fluorescer and 125 kg of zeolite were mixed together, to give a homogeneous slurry. Thereafter, the obtained slurry was spray-dried, to give a detergent composition.
  • the amount 4.0 kg of the resulting detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.28 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition had a smoothness rank of 5, and gave very excellent feel to the skin after drying.
  • An average number of the frayed threads of the 5 pieces of MA test fabrics was 50/piece.
  • the amount 370 kg of water, 200 kg of a 50% by weight aqueous sodium dodecylbenzenesulfonate, 50 kg of a 40% by weight aqueous No. 2 silicate, 100 kg of sodium carbonate, 147.5 kg of sodium sulfate, 5 kg of polyethylene glycol, 2.5 kg of a CBS fluorescer, 25 kg of zeolite and 100 kg of sodium tripolyphosphate were mixed together, to give a homogeneous slurry. Thereafter, the obtained slurry was spray-dried, to give a detergent composition.
  • the amount 4.0 kg of the resulting detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.28 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition is shown in Table 2.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition had a smoothness rank of 5, and gave very excellent feel to the skin after drying.
  • An average number of the frayed threads of the 5 pieces of MA test fabrics was 50/piece.
  • the amount 0.3 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) and 0.3 kg of sodium sulfate were supplied into a High-Speed Mixer (manufactured by Mitsui Miike Machinery Co., Ltd., capacity: 2 L, equipped with a jacket), and the mixture was stirred while rotating the main shaft at 3600 r/m for 3 minutes. Thereafter, the mixture was taken out of the mixer, to give a mixture of laundry creamy smoothness improvers (potassium metaphosphate: 50% by weight, sodium sulfate: 50% by weight).
  • the molecular weight of the polyethylene glycol is 13000
  • the molecular weight of the sodium polyacrylate is 10000
  • the molecular weight of acrylic acid-maleic acid copolymer (Na salt) is 70000.
  • Potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045) was pulverized with an atomizer (manufactured by Fuji Paudal Co., Ltd., Model A-7.5) under the conditions of a hammer rotational speed of 8500 r/m, a feeding rate of raw materials of 60 kg/hr, a screen diameter of 0.7 mm, to give potassium metaphosphate having an average primary particle size of about 60 ⁇ m.
  • the amount 4.0 kg of the above detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.4 kg of the above pulverized potassium metaphosphate was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the evaluation results for the resulting detergent composition containing a laundry creamy smoothness improver are shown in Table 3.
  • a washing liquid immediately after dissolving the detergent composition was a viscous liquid, and the detergent composition containing a laundry creamy smoothness improver had smoothness rank of 5 and a time period corresponding to soaking time of 20 minutes (smoothness rank after soaking: 4) and residual property/adhesion to the black cloth of O, and gave very excellent feel to the skin after drying.
  • the amount 4.0 kg of the above detergent composition was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.4 kg of potassium metaphosphate (manufactured by Wako Pure Chemical Industries, Ltd., model number: 169-07045, average particle size: about 300 ⁇ m) was added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the evaluation results for the resulting detergent composition containing a laundry creamy smoothness improver are shown in Table 3.
  • a washing liquid immediately after dissolving the detergent composition was a viscous liquid, and the detergent composition containing a laundry creamy smoothness improver had a smoothness rank of 5 and a time period corresponding to soaking time of 120 minutes (smoothness rank after soaking: 5) and residual property/adhesion to the black cloth of ⁇ , and gave very excellent feel to the skin after drying.
  • the amount 0.4 kg of the pulverized potassium metaphosphate obtained in the same manner as in Example 11 and 0.086 kg of sodium lauryl sulfate (manufactured by Kao Corporation, trade name: "EMAL 10 powder”) were supplied into a High-Speed Mixer (manufactured by Mitsui Miike Machinery Co., Ltd., capacity: 2 L, equipped with a jacket), and the mixture was stirred while rotating the main shaft at 3600 r/m, while allowing a hot water of 80°C to flow through the jacket at 10 L/minute until the temperature of the mixture reached 70°C.
  • Dalton, screen diameter: 1.0 mm Dalton, screen diameter: 1.0 mm
  • laundry creamy smoothness improver granules potassium metaphosphate: 70% by weight, sodium lauryl sulfate: 15% by weight, polyethylene glycol: 15% by weight
  • the amount 4.0 kg of the same detergent composition as that used in Example 11 was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.57 kg of the above laundry creamy smoothness improver granules were added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver.
  • the smoothness of the resulting detergent composition containing laundry creamy smoothness improver granules are shown in Table 3.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition containing laundry creamy smoothness improver granules had a smoothness rank of 5 and a time period corresponding to soaking time of 60 minutes (smoothness rank after soaking: 5) and residual property/adhesion to black cloth of O, and gave very excellent feel to the skin after drying.
  • the amount 0.4 kg of the pulverized potassium metaphosphate obtained in the same manner as in Example 11 and 0.086 kg of sodium lauryl sulfate (manufactured by Kao Corporation, trade name "EMAL 10 powder”) were supplied into a High-Speed Mixer (manufactured by Mitsui Miike Machinery Co., Ltd., capacity: 2 L, equipped with a jacket), and the mixture was stirred while rotating the main shaft at 3600 r/m, while allowing a hot water of 80°C to flow through the jacket at 10 L/minute until the temperature of the mixture reached 70°C.
  • Dalton, screen diameter: 1.5 mm Dalton, screen diameter: 1.5 mm
  • laundry creamy smoothness improver granules potassium metaphosphate: 70% by weight, sodium lauryl sulfate: 15% by weight, polyethylene glycol: 15% by weight
  • the amount 4.0 kg of the same detergent composition as that used in Example 11 was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.57 kg of the above laundry creamy smoothness improver granules were added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing laundry creamy smoothness improver granules.
  • the smoothness of the resulting detergent composition containing laundry creamy smoothness improver granules are shown in Table 3.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition containing laundry creamy smoothness improver granules had a smoothness rank of 5 and a time period corresponding to soaking time of 150 minutes (smoothness rank after soaking: 5) and residual property/adhesion to black cloth of O, and gave very excellent feel to the skin after drying.
  • the amount 0.4 kg of the pulverized potassium metaphosphate obtained in the same manner as in Example 11 and 0.086 kg of sodium lauryl sulfate (manufactured by Kao Corporation, trade name: "EMAL 10 powder”) were supplied into a High-Speed Mixer (manufactured by Mitsui Miike Machinery Co., Ltd., capacity: 2 L, equipped with a jacket), and the mixture was stirred while rotating the main shaft at 3600 r/m, while allowing a hot water of 80°C to flow through the jacket at 10 L/minute until the temperature of the mixture reached 70°C.
  • Dalton, screen diameter: 2.0 mm Dalton, screen diameter: 2.0 mm
  • the amount 4.0 kg of the same detergent composition as that used in Example 11 was supplied into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L), thereafter 0.57 kg of the above laundry creamy smoothness improver granules were added thereto, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing laundry creamy smoothness improver granules.
  • the smoothness of the resulting detergent composition containing laundry creamy smoothness improver granules are shown in Table 3.
  • a washing liquid dissolving the detergent composition was a viscous liquid, and the detergent composition containing laundry creamy smoothness improver granules had a smoothness rank of 5 and a time period corresponding to soaking time of 180 minutes (smoothness rank after soaking: 5) and residual property/adhesion to black cloth of O, and gave very excellent feel to the skin after drying.
  • Table 3 Ex. 11 Ex. 12 Ex. 13 Ex. 14 Ex.
  • Potassium metaphosphate was prepared according to the following method, and its evaluation for hand-washing was carried out.
  • the amount 4.0 kg of the detergent composition obtained in Comparative Example 1 was introduced into a concrete mixer (manufactured by Koyo Kikai Sangyo K.K., capacity: 40L). Subsequently, each of potassium metaphosphates prepared under the conditions as shown in Table 4 was added thereto in the proportion (ratio to the detergent composition) as shown in Table 4, and the components were mixed in the mixer at a slanting angle of 30° and a rotational speed of 20 r/m for 3 minutes, to give a detergent composition containing a laundry creamy smoothness improver. The smoothness of the resulting detergent composition containing a laundry creamy smoothness improver is shown in Table 4.
  • the smoothness evaluation was carried out by the evaluation for hand-washing.
  • the K/P molar ratio is less than 1 and shows an even more excellent smoothness rank.
  • the smoothness rank changes depending upon the baking temperatures, and shows an excellent smoothness at 400°C or higher.
  • the K/P molar ratio was obtained in accordance with the following determination method.
  • K and P in the glass beads were determined (XRF intensity) under the following conditions with a fluorescent X-ray analyzer (manufactured by K.K. Rigaku, ZSX100e).
  • K/P Molar Ratio [ XRF Intensity of K ( sample ) ⁇ XRF Intensity of P ( reagent ) ] / [ XRF Intensity of P ( sample ) ⁇ XRF Intensity of K ( reagent ) ] Table 4 K/P Molar Ratio Baking Temp.
  • Example 16 Formulation Amount of Potassium Metaphosphate (ratio to detergent) Evaluation for Hand-washing (Rank for Smoothness)
  • Example 16 0.9 700 10% 5
  • Example 17 0.96 700 10% 5
  • Example 18 0.97 700 10% 5
  • Example 19 0.98 700 8% 5
  • Example 20 0.99 700 10% 5
  • Example 21 0.98 300 10% 3
  • Example 22 0.98 400 10% 4
  • Example 23 0.98 500 10% 4
  • Example 24 0.98 600 10% 5
  • Example 25 0.98 850 7% 5
  • Example 26 1 700 10% 3
  • the laundry creamy smoothness improver and the laundry creamy smoothness improver granules of the present invention are suitably used for hand-washing of clothes, especially in hand-washing requiring soaking for a long period of time.
  • laundry creamy smoothness improver of the present invention effects such as smoothness between items to be washed during hand-washing is improved, so that washing can be performed with a reduced power, and hand-washing is facilitated by increasing the rate of rubbing items to be washed (number of rubbings per unit time) are exhibited. Further, by using the laundry creamy smoothness improver granules of the present invention, insoluble remnants of potassium metaphosphate and deposition to clothes are not generated so that the same effects are exhibited in a case where the clothes are not soaked and a case where the clothes are soaked for a long period of time.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Detergent Compositions (AREA)
EP04733116A 2003-05-15 2004-05-14 Gleitfähigkeitsverbesserer zur anwendung beim waschen Withdrawn EP1624049A4 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2003137493 2003-05-15
JP2004031430 2004-02-06
JP2004031421 2004-02-06
PCT/JP2004/006872 WO2004101721A2 (ja) 2003-05-15 2004-05-14 洗濯用スベリ性改善剤

Publications (2)

Publication Number Publication Date
EP1624049A2 true EP1624049A2 (de) 2006-02-08
EP1624049A4 EP1624049A4 (de) 2006-06-14

Family

ID=33458360

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04733116A Withdrawn EP1624049A4 (de) 2003-05-15 2004-05-14 Gleitfähigkeitsverbesserer zur anwendung beim waschen

Country Status (4)

Country Link
EP (1) EP1624049A4 (de)
CN (1) CN1774496B (de)
MY (1) MY140125A (de)
WO (1) WO2004101721A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006051932A1 (en) * 2004-11-11 2006-05-18 Kao Corporation Laundry creamy smoothness improver

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007308826A (ja) * 2006-05-17 2007-11-29 Kao Corp 洗濯用スベリ性改善剤造粒物

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746448C (de) * 1940-07-27 1944-08-05 Albert Ag Chem Werke Verfahren zum Waschen
US3423322A (en) * 1964-07-23 1969-01-21 Stauffer Chemical Co Tableted detergents having improved green strength
GB1230582A (de) * 1968-06-26 1971-05-05
US3620979A (en) * 1968-04-24 1971-11-16 Fmc Corp Process of forming free-flowing, particulate mixtures of phosphates and silicates

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5280307A (en) * 1975-12-27 1977-07-06 Lion Corp Fatty acid detergent composition
EP0529931A3 (de) * 1991-08-21 1993-05-05 Imaginative Research Associates Inc. Wassermodifikator
JPH0987671A (ja) * 1995-09-22 1997-03-31 Kao Corp 液体洗浄剤組成物

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE746448C (de) * 1940-07-27 1944-08-05 Albert Ag Chem Werke Verfahren zum Waschen
US3423322A (en) * 1964-07-23 1969-01-21 Stauffer Chemical Co Tableted detergents having improved green strength
US3620979A (en) * 1968-04-24 1971-11-16 Fmc Corp Process of forming free-flowing, particulate mixtures of phosphates and silicates
GB1230582A (de) * 1968-06-26 1971-05-05

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2004101721A2 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006051932A1 (en) * 2004-11-11 2006-05-18 Kao Corporation Laundry creamy smoothness improver

Also Published As

Publication number Publication date
CN1774496B (zh) 2011-04-06
WO2004101721A3 (ja) 2005-02-17
CN1774496A (zh) 2006-05-17
WO2004101721A2 (ja) 2004-11-25
EP1624049A4 (de) 2006-06-14
MY140125A (en) 2009-11-30

Similar Documents

Publication Publication Date Title
JPS6072999A (ja) 超濃縮粉末洗剤の製法
NZ211754A (en) Laundry detergent containing amphoteric surface - active agents and sodium carboxymethylcellulose
EP1624049A2 (de) Gleitfähigkeitsverbesserer zur anwendung beim waschen
JP2662221B2 (ja) 高密度粒状濃縮洗剤組成物
JPS6410040B2 (de)
JPS6072998A (ja) 粉末物性に優れた界面活性剤粉体組成物の製造法
JPH054440B2 (de)
JPS6262899A (ja) 高密度粒状洗剤組成物
JP2672814B2 (ja) 高密度粒状洗剤組成物
JPS63161096A (ja) 高嵩密度粒状洗剤組成物
JP2007308826A (ja) 洗濯用スベリ性改善剤造粒物
JPH0372120B2 (de)
JP2670404B2 (ja) 高密度粒状洗浄剤組成物
JP4173836B2 (ja) 洗濯用スベリ性改善剤造粒物
JP3527767B2 (ja) 高嵩密度粒状洗剤の製造方法
JP2945495B2 (ja) 高嵩密度粒状洗剤組成物
JP4353586B2 (ja) 洗剤組成物
JP4381505B2 (ja) 洗濯方法
JP2004099699A (ja) 洗剤粒子群
JP2531522B2 (ja) 高嵩密度粒状洗剤組成物
WO2006051932A1 (en) Laundry creamy smoothness improver
JP4063431B2 (ja) 高嵩密度洗剤粒子群
JPH0566440B2 (de)
JP2012158646A (ja) 粉末洗浄剤組成物
JP2012126840A (ja) ゼオライト複合粒子群

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20051012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): ES FR

A4 Supplementary search report drawn up and despatched

Effective date: 20060502

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): ES FR

17Q First examination report despatched

Effective date: 20070316

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20090508