JP4912859B2 - Dishwasher finish composition - Google Patents

Description

  The present invention relates to a dishwasher finish composition for use in a dishwasher. In particular, it relates to a finishing composition for dishwashers for use in commercial dishwashers. The finish composition for a dishwasher according to the present invention accelerates drying of tableware such as ceramics, glass, and plastic, and enables reduction of water spots.

  A dishwasher is a facility for washing dishes such as dirty dishes, glasses and cooking utensils, and is used in kitchens such as homes, restaurants and coffee shops. In general, dishwashing is performed in the order of washing process-rinsing process. In the washing process, a non-foaming or low-foaming dishwasher cleaner different from a dishwashing detergent for hand washing is used. In addition, a finishing agent (also referred to as a rinse agent) is used in a rinsing process for commercial dishwashers used in kitchens such as restaurants and coffee shops.

A finish composition for a dishwasher is generally used by adding it to rinsing water in a concentration range of 50 to 100 ppm in order to speed up drying of dishes and reduce white spots called water spots and finish aesthetically. The water spot is dried before water droplets adhering to the tableware surface flow down, and hardness components such as calcium, magnesium, and silica are deposited on the tableware surface. Especially in the case of glass tableware, the beauty is greatly impaired.
In general, nonionic surfactants such as glycerin fatty acid esters and sorbitan fatty acid esters are blended in the finishing agent, and the rinse water is emulsified to lower the surface tension with the tableware so that water droplets can easily flow down. As a result, the drying of the tableware is accelerated, and the water spot can be reduced. Therefore, finishing agents are used in restaurants and coffee shops where tableware is frequently used.

  However, although the finishing agent has an effect of reducing water spots, it is never satisfactory, and in restaurants and coffee shops, the work of wiping with a towel is performed to remove the water spots attached to the dishes. It's real.

  In Patent Document 1, in order to provide a hydrophilic treatment on a hard surface, a monomer having two groups containing a quaternary ammonium functional group and ethylenic unsaturation in a polymerized form, and in an application medium A method of using a water-soluble or water-dispersible copolymer containing a hydrophilic monomer having a group that can be ionized and an ethylenically unsaturated hydrophilic monomer as an optional component is disclosed.

In Patent Document 2, in order to impart corrosion resistance to a hard surface, a monomer having a quaternary ammonium functional group and ethylenic unsaturation and a functional group having an acidic property that can be ionized in an application medium are retained. Disclosed is a dishwasher finish composition comprising a water-soluble or water-dispersible copolymer comprising a hydrophilic monomer and a monomer having an ethylenic unsaturation having a neutral charge as an optional component in the form of polymerized units. Has been.
Special table 2003-505535 gazette Special Table 2003-505534

  An object of the present invention is to provide a finishing composition for a dishwasher that accelerates drying of tableware such as ceramics, glass, and plastic, and enables reduction of water spots.

The present invention includes (A) a monomer unit (a) having at least one group selected from an amino group and a quaternary ammonium group and a monomer unit (b) represented by —SO ₂ — in the molecule. And a water-soluble polymer compound containing 10 to 99 mol% of the monomer unit (a) with respect to the total monomer units and having a monomer unit (b) / monomer unit (a) molar ratio of 0.01 to 1 [ Hereinafter, it relates to a finishing composition for a dishwasher containing (A) component].

  The present invention also provides a dishwasher using a dishwasher to wash dishes using a dishwasher detergent, and then rinsing the dishes with a dishwasher with rinsing water containing the dishwasher finish composition of the present invention. The present invention relates to a method for finishing tableware.

  ADVANTAGE OF THE INVENTION According to this invention, the finishing agent composition for dishwashers which speeds drying of tableware, such as ceramics, glass, a plastics, and enables reduction of a water spot is provided.

<(A) component>
The component (A) in the molecule, the monomer units having a group selected from amino groups and quaternary ammonium groups one or more (a), -SO ₂ - and a represented by the monomer unit (b), It is a water-soluble polymer compound containing 10 to 99 mol% of monomer units (a) with respect to all monomer units and having a monomer unit (b) / monomer unit (a) molar ratio of 0.01 to 1.

  As the monomer used for constituting the monomer unit (a), one or more selected from the compound represented by the following general formula (1) and the compound represented by the general formula (2) are preferable.

[Wherein, R ¹ , R ² , R ³ , R ⁷ , R ⁸ and R ⁹ are each independently a hydrogen atom, a hydroxyl group or an alkyl group having 1 to 3 carbon atoms. X, Y are each independently an alkylene group having 1 to 12 carbon ^{atoms, -COOR 12 -, - CONHR 12} -, - OCOR 12 -, - a group selected from - R ¹³ -OCO-R ^12. Here, R ¹² and R ¹³ are each independently an alkylene group having 1 to 5 carbon atoms. R ⁴ is an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, or R ¹ R ² C═C (R ³ ) —X—. R ⁵ is an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group, or a benzyl group, and R ⁶ is an alkyl group having 1 to 10 carbon atoms that may be substituted with a hydroxy group, a carboxyl group, a sulfonic acid group, or a sulfate group. When it is an alkyl group or a benzyl group, and R ⁶ is an alkyl group, a hydroxyalkyl group or a benzyl group, Z ⁻ represents an anion. When R ⁶ contains a carboxyl group, a sulfonic acid group, or a sulfate group, Z ⁻ does not exist, and these groups in R ⁶ become anions. Examples of the anion of Z ⁻ include a halogen ion, a sulfate ion, an alkyl sulfate ester ion having 1 to 3 carbon atoms, an aromatic sulfonate ion optionally substituted with an alkyl group having 1 to 3 carbon atoms, and a hydroxy ion. Can be mentioned. R ¹⁰ is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, or R ⁷ R ⁸ C═C (R ⁹ ) —Y—. R ¹¹ is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, or a hydroxyalkyl group. ]

  Specifically preferred as the compound of the general formula (1) are acryloyl (or methacryloyl) aminoalkyl (C1-5) -N, N, N-trialkyl (C1-3) quaternary ammonium salt, acryloyl. (Or methacryloyl) oxyalkyl (C1-5) -N, N, N-trialkyl (C1-3) quaternary ammonium salt, N- (ω-alkenyl (C2-10))-N , N, N-trialkyl (carbon number 1 to 3) quaternary ammonium salt, N, N-di (ω-alkenyl (carbon number 2 to 10))-N, N-dialkyl (carbon number 1 to 3) 4 A quaternary ammonium salt is preferred, and diallyldimethylammonium salt is particularly preferred.

  Particularly preferred as the compound of the general formula (2) are acryloyl (or methacryloyl) aminoalkyl (C1-5) -N, N-dialkyl (C1-3) amine, acryloyl (or methacryloyl) oxyalkyl. (C1-5) -N, N-dialkyl (C1-3) amine, N- (ω-alkenyl (C2-10))-N, N-dialkyl (C1-3) amine N, N-di (ω-alkenyl (2 to 10 carbon atoms))-N-alkyl (1 to 3 carbon atoms) amine, allylamine, diallylmethylamine and diallylamine are preferable, and allylamine and diallylmethylamine are particularly preferable. , Diallylamine, acryloyl (or methacryloyl) aminopropyl-N, N-dimethylamine, acryloyl (or methacryloyl) oxy Ethyl-N, N-dimethylamine is good.

  From the viewpoint of surface adsorption power, the component (A) is 10 to 99 mol%, preferably 30 to 90 mol%, more preferably 50 to 90 mol%, particularly preferably the monomer unit (a) based on the total monomer units. 60 to 80 mol% is contained. This mol% is calculated by [number of moles of monomer unit (a) / number of moles of all monomer units] × 100.

In the polymer of component (A), the monomer unit (b) is —SO ₂ —, and as a method for introducing such a monomer unit into the polymer, a predetermined amount of SO ₂ gas is added to the compound of the general formula (1). And / or blown into a solution containing the compound of general formula (2), benzoyl peroxide, t-butyl hydroperoxide, cumene hydroperoxide, dilauroyl peroxide, azobisisobutyronitrile, azobisisovaleronitrile, 2, Polymerization initiation selected from 2'-azobis (2-amidinopropane), t-butyl hydroperoxide, cumene hydroperoxide, methyl ethyl ketone peroxide, cyclohexanone peroxide, peracetic acid, perbenzoic acid, persulfate, and hydrogen peroxide It is obtained by polymerizing using an agent. A solvent can be used at the time of polymerization. Specifically, alcohols selected from water, methanol, ethanol and propanol, ketones selected from acetone and methyl ethyl ketone, dimethyl sulfoxide, dimethylformamide, dimethylacetamide, N-methylimidazo Lydinone, acetonitrile, propionitrile, toluene, xylene and hexane can be used. The polymerization temperature varies depending on the combination of the solvent and the initiator, and is preferably -20 to 200 ° C, preferably -10 to 100 ° C. In the present invention, it is possible to polymerize with light or radiation, and it is possible to polymerize efficiently by irradiating light with a wavelength of 300 to 450 nm.

  From the viewpoint of finish, the molar ratio of monomer unit (b) / monomer unit (a) is 0.01 to 1, preferably 0.03 to 0.75, more preferably 0.05 to 0.5. is there.

  The component (A) of the present invention can be contained as an anionic monomer unit, that is, a structural unit derived from an anionic monomer (hereinafter referred to as a monomer unit (c)). The molar ratio of the monomer unit (c) is arbitrary, but from the viewpoint of surface adsorption power, the monomer unit (a) / monomer unit (c) = 10/90 to 90/10, more preferably 30/70 to 90/10, Further, 50/50 to 90/10, particularly 60/40 to 90/10, and most preferably 65/35 to 90/10. Examples of the anionic monomer include monomers selected from the following (i).

  (I) Acrylic acid or its salt, methacrylic acid or its salt, maleic acid or its salt, maleic anhydride, styrene sulfonate, 2-acrylamido-2-methylpropane sulfonate, allyl sulfonate, vinyl sulfonic acid Compound selected from salt, methallyl sulfonate, sulfopropyl methacrylate, mono-ω-methacryloyloxyalkyl phosphate (C1-12)

  In addition, the component (A) of the present invention can also be included as a structural unit derived from a nonionic monomer (hereinafter referred to as monomer unit (d)). Examples of the nonionic monomer include monomers selected from the following (ii) to (iv).

  (Ii) Acrylic (or methacrylic) amide, N, N-dimethylaminopropylacrylic acid (or methacrylic acid) amide, N, N-dimethylacrylic (or methacrylic) amide, N, N-dimethylaminoethylacrylic acid (or methacrylic) Acid) amide, N, N-dimethylaminomethylacrylic acid (or methacrylic acid) amide, N-vinyl-2-caprolactam, N-vinyl-2-pyrrolidone-containing compound

  (Iii) Acrylic acid (or methacrylic acid) alkyl (1 to 5 carbon atoms), acrylic acid (or methacrylic acid) 2-hydroxyethyl, acrylic acid (or methacrylic acid) -N, N-dimethylaminoalkyl (1 carbon atom) -5), ester group-containing compound selected from vinyl acetate

  (Iv) ethylene, propylene, n-butylene, isobutylene, n-pentene, isoprene, 2-methyl-1-butene, n-hexene, 2-methyl-1-pentene, 3-methyl-1-pentene, 4-methyl Olefin compounds selected from -1-pentene, 2-ethyl-1-butene, styrene, vinyltoluene, and α-methylstyrene

  Among these, from the viewpoint of finish, a monomer unit derived from the monomer (i) or (ii) is particularly preferable, and a monomer unit derived from the monomer (i) is most preferable. Among these, acrylic acid or its sodium salt or Preference is given to potassium salt, methacrylic acid or its sodium or potassium salt, maleic acid or its sodium or potassium salt. Here, the counter ion of the monomer unit derived from the monomer (i) may be a cationic group portion of the polymer to be contained.

  When the component (A) has the monomer unit (d), the molar ratio of the monomer unit (d) / monomer unit (a) is 0.05 to 1, and more preferably 0.1 to 0.00 from the viewpoint of finish. 75, especially 0.2 to 0.5 is preferred.

  The water-soluble polymer of the component (A) of the present invention preferably has a weight average molecular weight of 1,000 to 6,000,000, more preferably 1,000 to 500,000, still more preferably 1,000 to 100. 000, particularly preferably 5,000 to 60,000, and this weight average molecular weight is a mixed solvent of acetonitrile and water (phosphate buffer solution) as a developing solvent, and polyethylene glycol as a standard substance by gel permeation chromatography. It is what I have sought.

  In the polymer of the component (A) used in the present invention, the monomer unit (a), the monomer unit (b), and preferably the monomer units (c) and (d) are present in either the main chain or the side chain in the polymer. It does not matter if it exists. These may be randomly polymerized, block polymerized, or graft polymerized. In the present invention, it is most preferable to use a polymer composed only of the monomer unit (a), the monomer unit (b) and the monomer unit (c).

  The finishing composition for a dishwasher of the present invention preferably contains (B) a surfactant (hereinafter referred to as component (B)) from the viewpoint of improving the drying speed and reducing the water spot.

<(B) component>
As the component (B), one or more selected from anionic surfactants, cationic surfactants, amphoteric surfactants and nonionic surfactants can be used.

(I) Anionic surfactant Alkyl benzene sulfonate, alkane sulfonate, α-olefin sulfonate, alkyl sulfate ester salt, polyoxyethylene (average number of added moles 1 to 10) alkyl ether sulfate salt, polyoxy Examples include ethylene (average number of added moles of 1 to 10) alkyl ether acetate, fatty acid salt and the like. The salt is preferably ammonium, sodium or potassium.

(Ii) Cationic surfactants Alkyltrimethylammonium salts, dialkyldimethylammonium salts, alkylammonium salts, benzalkonium salts, benzethonium salts, imidazolium salts, pyridinium salts and the like can be mentioned. The salt is preferably a halogen.

(Iii) Amphoteric surfactants Alkyldimethylamine oxide, alkyldimethylaminoacetic acid betaine, alkylhydroxysulfobetaine, alkylamidopropylbetaine, alkylcarboxymethylhydroxyethyl imidazolium betaine and the like can be mentioned.

(Iv) Nonionic surfactant Glycerin fatty acid ester, polyglycerol fatty acid ester, propylene glycol fatty acid ester, polyethylene glycol fatty acid ester, sorbitan fatty acid ester, sucrose fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkyl ether, poly Examples thereof include oxyethylene dialkyl ether, polyoxyethylene glycol, polyoxyethylene oxypropylene glycol, and polyoxypropylene oxyethylene oxypropylene glycol. From the viewpoint of water spot reduction, glycerin fatty acid ester, sorbitan fatty acid ester, sucrose fatty acid ester, polyoxyethylene sorbitan fatty acid ester, and polyoxypropyleneoxyethyleneoxypropylene glycol are preferable.

As the component (B), a nonionic surfactant [hereinafter referred to as the component (B1)] represented by the following formula (3) is preferable from the viewpoint of improving the drying speed and reducing the water spot.
_{^{R 14 - (AO) n -R}} 15 (3)
[Wherein, R ¹⁴ and R ¹⁵ each independently represent a hydrogen atom or a linear or branched alkyl group having 1 to 24 carbon atoms. n is an average addition mole number, and is a number of 1-500. A is the same or different and is an ethylene group, a propylene group, or a butylene group. ]

In the component (B1), R ¹⁴ and R ¹⁵ are each independently preferably a hydrogen atom or a linear or branched alkyl group having 6 to 18 carbon atoms, more preferably a hydrogen atom, or a linear or branched chain. These are alkyl groups having 8 to 14 carbon atoms. n is an average addition mole number, Preferably it is 1-400, More preferably, it is 1-350, More preferably, it is 1-200, Most preferably, it is a number of 1-100. A is the same or different and is preferably an ethylene group or a propylene group. Component (B1) is available from BASF under the trade name “Plurafac”.

Furthermore, from the viewpoint of non-foaming property, low foaming property, improvement in drying speed and water spot reduction, the component (B) is represented by the nonionic surfactant represented by the following formula (4) and the formula (5). One or more nonionic surfactants selected from the group consisting of nonionic surfactants (hereinafter referred to as component (B2)) are preferred.
HO (CH ₂ CH ₂ O) _a (CH (CH ₃ ) CH ₂ O) _b (CH ₂ CH ₂ O) _c H (4)
HO (CH (CH ₃ ) CH ₂ O) _d (CH ₂ CH ₂ O) _e (CH (CH ₃ ) CH ₂ O) _f H (5)
[Wherein, a, b, c, d, e and f are the average number of moles added, each independently a number of 1 to 350. ]

  In the general formulas (4) and (5), a, b, c, d, e and f are the average added moles of ethylene oxide (hereinafter referred to as EO) or propylene oxide (hereinafter referred to as PO). Yes, each independently a number from 1 to 350.

  The component (B2) preferably contains 10 mol% or more of EO in the total of EO and PO, and a, b, c, d, e and f are preferably selected so as to satisfy this.

  Moreover, 1,000-15,000 are preferable and, as for the weight average molecular weight of (B2) component, More preferably, it is 1,500-6,000. The component (B2) is available from BASF under the trade names “Pluronic” and “Pluronic R”. As the component (B2), a nonionic surfactant represented by the formula (5) is preferable from the viewpoint of low foamability.

Moreover, 1 selected from the nonionic surfactant represented by the following general formula (6) and the nonionic surfactant represented by the general formula (7) from the viewpoint of low foaming property, improvement in drying speed, and water spot reduction. One or more types of nonionic surfactants (hereinafter referred to as component (B3)) are preferred.
_{^{R 16 -O- (EO) p -}} (PO) q - (EO) r -H (6)
[Wherein R ¹⁶ represents a linear alkyl group having 8 to 18 carbon atoms or a linear alkenyl group, EO represents an oxyethylene group, and PO represents an oxypropylene group. p, q, and r represent average addition mole numbers, respectively, p = 1-10, q = 0.5-5, r = 1-10. ]
R ¹⁷ —O— (EO) _s — (PO) _t —H (7)
[Wherein, R ¹⁷ represents a branched alkyl group having 8 to 18 carbon atoms or a branched alkenyl group, EO represents an oxyethylene group, and PO represents an oxypropylene group. s and t each represent an average added mole number, s = 4 to 10, t = 2 to 10, and 0.3 ≦ (t / s) ≦ 1.5. ]

In the general formula (6), R ¹⁶ is preferably a linear alkyl group having 10 to 14 carbon atoms or a linear alkenyl group, and more preferably a linear alkyl group having 10 to 14 carbon atoms, and p = 2 to 8 is preferable. Q = 0.5 to 4.5, more preferably 1 to 4.5, and particularly preferably 1 to 2, r = 2 to 8 is preferable, p + r = 1 to 30, further 2 to 20, and particularly 4 to 15 are preferable. . Specific examples of the nonionic surfactant of the general formula (6) include polyoxyethylene (3) polyoxypropylene (1.5) polyoxyethylene (3) lauryl ether, polyoxyethylene (5) polyoxypropylene (1 .5) Polyoxyethylene (5) lauryl ether, polyoxyethylene (5) polyoxypropylene (4.5) polyoxyethylene (5) lauryl ether, and the like. Here, regarding the said compound, the inside of () is the average addition mole number of ethylene oxide or propylene oxide (the same applies hereafter).

In the general formula (7), R ¹⁷ is preferably a branched alkyl group having 10 to 14 carbon atoms or a branched alkenyl group, and more preferably a branched alkyl group having 10 to 14 carbon atoms. Among the branched alkyl groups having 10 to 14 carbon atoms or branched alkenyl groups represented by R ^17, a secondary alkyl group or secondary alkenyl group having 10 to 14 carbon atoms is preferable. In General formula (7), s = 5-9 is preferable and t = 5-10 is preferable. Specific examples of the nonionic surfactant of the general formula (7) include polyoxyethylene (7) polyoxypropylene (8.5) -sec-dodecyl ether, polyoxyethylene (7) polyoxypropylene (8.5). -Sec-tridecyl ether, polyoxyethylene (7) polyoxypropylene (8.5) -sec-tetradecyl ether, and the like.

In the compound of the general formula (7), EO is added to a branched (preferably secondary) alcohol having a branched (preferably secondary) alkyl group or branched (preferably secondary) alkenyl group of R ^17. Then, it can be synthesized by adding PO.

  Further, the weight average molecular weight of the component (B3) is preferably 200 to 5,000, more preferably 200 to 2,000. Among the components (B3), the compound of general formula (6) is available from Kao Corporation under the trade name “Emulgen”, and the compound of general formula (7) is Nippon Shokubai under the trade name “Softanol”. Available from Co., Ltd. As the component (B3), a nonionic surfactant represented by the general formula (6) is preferable from the viewpoints of low foamability, improvement in drying speed, and reduction in water spots.

  The finishing composition for a dishwasher according to the present invention may contain a compound called (C) builder (hereinafter referred to as (C) component) in the field of cleaning agents. As the action mechanism of the builder, a metal chelate action, an alkali buffer action, and a solid particle dispersion action are important. That is, the component (C) is effective in reducing the water spot by capturing the hardness component.

<(C) component>
Examples of inorganic builders include carbonates, phosphates, silicates, and sulfates. Specific examples include sodium carbonate, potassium carbonate, sodium pyrophosphate, potassium pyrophosphate, sodium tripolyphosphate, sodium orthophosphate, sodium hexametaphosphate, sodium sulfate, sodium silicate, potassium silicate, and sodium metasilicate.

  Examples of the organic builder include (a) ethane-1,1-diphosphonic acid, ethane-1,2-diphosphonic acid, ethane-1-hydroxy-1,1-diphosphonic acid and derivatives thereof, ethanehydroxy-1,1, Salts of phosphonic acids such as 2-triphosphonic acid, ethane-1,2-dicarboxy-1,2-diphosphonic acid, methanehydroxyphosphonic acid, (b) 2-phosphonobutane-1,2-dicarboxylic acid, 1-phosphonobutane- 2,3,4-tricarboxylic acid, salts of phosphonocarboxylic acids such as α-methylphosphonosuccinic acid, (c) salts of amino acids such as aspartic acid and glutamic acid, (d) nitrilotriacetate, ethylenediaminetetraacetate Aminopolyacetates such as (e) diglycolic acid, oxydisuccinic acid, carboxymethyloxysuccinic acid, cyclopentane-1, , 3,4-tetracarboxylic acid, tetrahydrofuran-1,2,3,4-tetracarboxylic acid, tetrahydrofuran-2,2,5,5-tetracarboxylic acid, citric acid, lactic acid, tartaric acid, oxalic acid, sulfosuccinic acid, Examples thereof include salts of organic acids such as malic acid and gluconic acid, (f) polyacrylic acid salt, polyacrylic acid / polymaleic acid copolymer polymer compound and salts thereof. From the viewpoint of cost and safety, citric acid, malic acid, and tartaric acid are preferable.

  The finishing composition for a dishwasher of the present invention can contain one or more selected from lower alcohols. The lower alcohol is an alcohol having 1 to 4 carbon atoms, specifically, methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, ethylene glycol, propylene glycol, glycerin, diethylene glycol, diethylene glycol monoethyl ether. Etc. These contents are preferably from 0.1 to 50% by weight, more preferably from 0.5 to 30% by weight, and still more preferably from the viewpoint of drying properties, with respect to the finisher composition for a dishwasher of the present invention. Is 1 to 20% by weight, particularly preferably 2 to 15% by weight.

  The finishing composition for a dishwasher of the present invention can contain an organic polymer compound. Specifically, dextrin derived from natural products, carrageenan, xanthan gum, guar gum, pectin, locust bin gum, or derivatives thereof, modified starch, methylcellulose, carboxymethylcellulose and other polysaccharides, polyvinyl alcohol, polyacrylamide, polyethylene oxide, etc. These synthetic polymer compounds are included. These contents are preferably from 0.1 to 20% by weight, more preferably from 0.5 to 15% by weight, particularly from the viewpoint of reducing the water spot, with respect to the finish composition for a dishwasher of the present invention. Preferably it is 1 to 10% by weight.

  In addition, a bleaching agent, an antifoaming agent, a rust preventive agent, a preservative, a fragrance | flavor, etc. can be contained.

  As the above components, those described in International Publication No. 99/58633 pamphlet can be referred to.

<Finisher composition for dishwashers>
The finishing composition for a dishwasher according to the present invention is preferably 0.1 to 100% by weight, more preferably 0.5 to 80% by weight of the component (A) from the viewpoint of improving the drying speed and reducing the water spot. More preferably, it is 1 to 60% by weight. Particularly preferably 1 to 40% by weight. Most preferably, it contains 1 to 25% by weight.

  In the finish composition for a dishwasher of the present invention, the component (B) is preferably 0.1 to 50% by weight, more preferably 0.05 to 30% by weight, from the viewpoint of improving the drying speed and reducing the water spot. More preferably, the content is 0.1 to 20% by weight, and particularly preferably 0.5 to 10% by weight.

  From the viewpoint of reducing the water spot, the finish composition for a dishwasher of the present invention is preferably 0.1 to 80% by weight, more preferably 0.5 to 50% by weight, and still more preferably, from the viewpoint of reducing water spots. 1 to 40% by weight, particularly preferably 3 to 30% by weight.

  In the finishing composition for a dishwasher of the present invention, the weight ratio of the component (A) to the component (B) is (A) / (B) = 20/1 to 1/20 from the balance between finish and cost. Is preferable, 15/1 to 1/15 is more preferable, 10/1 to 1/10 is more preferable, and 5/1 to 1/5 is particularly preferable.

  In the dishwasher finish composition of the present invention, the pH of a 0.2 wt% aqueous solution at 20 ° C is preferably 2-14. 4-13 are more preferable from a viewpoint of work safety, and 5-12 are still more preferable. In addition, you may mix | blend pH adjusters, such as sodium hydroxide, potassium hydroxide, and a sulfuric acid, so that pH may exist in the range of 2-14.

  Further, the finish composition for a dishwasher of the present invention is preferably used as a cleaning liquid diluted to an appropriate concentration with water or the like in use, and the concentration of the component (A) in the cleaning liquid is finished. From the viewpoint of properties, it is preferably 1 to 10,000 ppm (weight ratio), more preferably 1 to 5,000 ppm, still more preferably 1 to 1,000 ppm, and particularly preferably 5 to 800 ppm. The concentration of the component (B) in the cleaning liquid is preferably 1 to 10,000 ppm, more preferably 1 to 5,000 ppm, still more preferably 1 to 1,000 ppm, and particularly preferably 5 from the viewpoint of detergency. -800 ppm. The concentration of the component (C) in the cleaning liquid is preferably 1 to 10,000 ppm, more preferably 10 to 5,000 ppm, still more preferably 20 to 2,500 ppm, and particularly preferably 50 from the viewpoint of cleaning power. -1,000 ppm.

  The finish composition for a dishwasher according to the present invention is preferably used by adding itself to rinsing water in a concentration range of 1 to 50,000 ppm. From the viewpoint of economy and finish, it is more preferably 5 to 20,000 ppm, more preferably 10 to 10,000 ppm, and particularly preferably 20 to 5,000 ppm. The rinsing time of the tableware is preferably 1 second to 1 minute, more preferably 3 to 30 seconds from the viewpoint of finish. The rinsing liquid is performed with water, warm water, or hot water at 70 to 90 ° C.

  The method for finishing dishes using the dishwasher finish composition of the present invention is preferably performed using a dishwasher, particularly a commercial dishwasher, and is usually rinsed when rinsing with a dishwasher. Used by adding in water. If the product form of the dishwasher finish composition is liquid, for example, a tube dedicated to a commercial dishwasher is placed in a container such as a plastic filled with the dishwasher finish composition. Insert the tube pump directly into the tube pump, and in the case of powder or solid, for example, spray water or hot water onto the dishwasher finish composition in the form of a spray or shower, for the required amount of dishwasher The composition of the present invention is supplied into the rinsing water by transferring the finish composition to the rinsing water piping of a commercial dishwasher.

  The concentration of the rinsing water containing the dishwasher finish composition of the present invention does not need to be kept constant. For example, in the first half of the rinsing process, the dishwasher finish composition of the present invention is transferred. In the latter half of the rinsing step, rinsing water that does not contain the dishwasher finish composition of the present invention may be used. In that case, a commercially available rinse agent may be used at the recommended concentration in the latter half of the rinsing step.

  A finishing composition for a dishwasher having the composition shown in Table 1 was prepared, and the finish (drying speed and water spot) was evaluated by the following method. The results are shown in Table 1.

[Finishability evaluation]
-Preparation of model dirt After applying 1g of milk to a new 8 ounce glass, the one dried at 60 ° C for 2 hours was used as a model dirt to evaluate the finished quality.

・ Evaluation method 1
38g of Kao's dishwasher cleaning agent "Axial EN" is put into a washing tank (38L) of a commercial dishwasher [SANYO DR53 manufactured by Sanyo Electric Co., Ltd.] and dissolved in hot water at 50 ° C. It was. Set 4 pieces of 8 ounce glass coated with model dirt on a dedicated rack and wash with 50 ° C washing solution for 40 seconds, then component (A) [Comparative example is high molecular compound (4)] converted to effective amount Was rinsed for 8 seconds with 4 L of rinsing water at 80 ° C. in which the finishing composition for a dishwasher was dissolved to 0.04 g. An 8 ounce glass was taken out from the dedicated rack and dried at 25 ° C. The drying speed and water spot were evaluated according to the following criteria.

・ Evaluation method 2
38g of Kao's dishwasher cleaning agent "Axial EP" is put into a washing tank (38L) of a commercial dishwasher [SANYO DR53 manufactured by Sanyo Electric Co., Ltd.] and dissolved in hot water at 50 ° C. It was. Set 4 pieces of 8 ounce glass coated with model dirt on a dedicated rack and wash with 50 ° C washing solution for 40 seconds, then component (A) [Comparative example is high molecular compound (4)] converted to effective amount Rinse for 4 seconds with 2 L of rinsing water at 80 ° C. in which the dishwasher finish composition was dissolved to 0.04 g. Subsequently, only 80 ° C. rinse water was rinsed with 2 L for 4 seconds. An 8 ounce glass was taken out from the dedicated rack and dried at 25 ° C. The drying speed and water spot were evaluated according to the following criteria.

・ Evaluation method 3
38g of Kao's dishwasher cleaning agent "Axial EP" is put into a washing tank (38L) of a commercial dishwasher [SANYO DR53 manufactured by Sanyo Electric Co., Ltd.] and dissolved in hot water at 50 ° C. It was. Set 4 pieces of 8 ounce glass coated with model dirt on a dedicated rack and wash with 50 ° C washing solution for 40 seconds, then component (A) [Comparative example is high molecular compound (4)] converted to effective amount Was rinsed with 1 L of rinsing water at 80 ° C. in which the dishwasher finish composition was dissolved to 0.04 g for 2 seconds. Subsequently, only 80 ° C. rinsing water in which 0.3 g of a finishing agent “Axial Dry Rinse” for dishwasher manufactured by Kao Corporation was dissolved was rinsed with 3 L for 6 seconds. An 8 ounce glass was taken out from the dedicated rack and dried at 25 ° C. The drying speed and water spot were evaluated according to the following criteria.

* Criteria for drying speed A: Average per glass, dried in less than 1 hour ○; Average, per glass 1 hour or more, less than 1 hour 30 minutes Δ; Average per glass 1 hour 30 minutes or more and less than 2 hours, dried x; average of 2 hours or more per glass

* Judgment criteria for water spots ◎; The average number of water spots is less than 10 per glass ○: The average number of water spots is 10 or more and less than 20 per glass Δ; The number of water spots is 20 to less than 40 on average per glass ×; the number of water spots on average 40 or more per glass

  The results are shown in Table 1. It has been found that the finish composition for a dishwasher of the present invention accelerates drying and reduces water spots.

(Note) The components in the table are as follows.
-High molecular compound (1): a copolymer of diallyldimethylammonium chloride, maleic acid and SO ₂ (molar ratio 70/25/5) (used as an aqueous solution having an effective content of 25% by weight, and the amount of the aqueous solution is shown in the table) Indicated.)
Polymer compound (2): a copolymer of diallyldimethylammonium chloride and SO ₂ (molar ratio 50/50) (used as an aqueous solution having an effective content of 50% by weight, the amount of the aqueous solution is shown in the table)
-High molecular compound (3): a copolymer of diallyldimethylammonium chloride, maleic acid and SO ₂ (molar ratio 50/25/25) (used as an aqueous solution with an effective content of 25% by weight, the amount of the aqueous solution in the table) Indicated.)
Polymer compound (4): a copolymer of diallyldimethylammonium chloride and maleic acid (molar ratio 50/50) (used as an aqueous solution having an effective content of 40% by weight, and the amount of the aqueous solution is shown in the table)
・ Nonionic surfactant (1): PO / EO / PO block polymer (trade name: Pluronic RPE2520, manufactured by BASF)
Nonionic surfactant (2): polyoxyethylene-polyoxypropylene-polyoxyethylene lauryl ether [trade name: Emulgen LS106, manufactured by Kao Corporation]
Nonionic surfactant (3): glyceryl caprate [trade name: Sunsoft No. 707H, manufactured by Taiyo Chemical Co., Ltd.)
Anionic surfactant (4): Sodium laurate

Claims (6)

(A) The monomer has a monomer unit (a) derived from diallyldimethylammonium salt, a monomer unit (b) represented by -SO _2- , and an anionic monomer unit (c) in the molecule, units (a) comprise 50 to 80 mol% relative to all monomer units, motor Nomar units (b) / molar ratio of 0.01 to 0.5 der monomer unit (a) is, and the monomer unit (a ) / Monomer unit (c) molar ratio of 60/40 to 90/10 containing a water-soluble polymer compound ,
The anionic monomer unit (c) is an anionic monomer unit derived from an anionic monomer selected from acrylic acid or a salt thereof, methacrylic acid or a salt thereof, maleic acid or a salt thereof,
Dishwasher finish composition. The finishing composition for a dishwasher according to claim 1 , wherein the water-soluble polymer compound (A) contains 60 to 80 mol% of the monomer unit (a) based on the total monomer units . Furthermore, the finishing composition for dishwashers of Claim 1 or 2 containing (B) surfactant. The finish composition for a dishwasher according to claim 3, wherein (B) the surfactant is a nonionic surfactant. Furthermore, (C) Finishing agent composition for dishwashers in any one of Claims 1-4 containing a builder. After washing dishes using the dishwasher detergent by the dishwasher, the dishes are washed by the dishwasher with the rinsing water containing the dishwasher finish composition according to any one of claims 1 to 5. A method for finishing tableware for rinsing.