JP6773875B2 - Method of manufacturing paper treatment agent and method of improving the texture of paper - Google Patents

Description

The present invention relates to a method for producing a paper treatment agent and a method for improving the texture of paper.

Conventionally, there have been known products in which paper is treated with a paper treatment agent containing a moisturizing agent as a main component to give the paper a moist feeling as compared with ordinary dry tissue or the like. Lotion tissue, which is a typical product, is a moisturizing tissue in which a lotion agent is applied as a paper treatment agent to tissue base paper, and it has a moist and soft texture that greatly improves the usability. , As a seasonal product in winter such as anti-influenza products, in recent years, it has expanded from being mainly used for nasal blows to daily use, and is becoming year-round.

As a moisturizing agent for moisturizing tissues, polyhydric alcohols such as glycerin and polyethylene glycol (PEG), particularly glycerin made from natural fats and oils, are often used. It is premised that this moisturizing agent enhances the hygroscopicity and moisturizing property of paper and gives the paper a moist feeling, and in addition, it is felt when a person touches something as an object to improve purchasing motivation. The texture and texture of the material are the most important qualities of moisturizing tissue. In order to improve the texture such as softness and surface feel (smoothness), various bases such as surfactants, oily components such as hydrocarbons and esters, and thickeners are blended. Surfactants are components that mainly affect the characteristics of texture and can impart softness. The oily component is a component that mainly affects the change in texture and can impart smoothness.

However, in order to uniformly mix the main component moisturizer and these bases, it is necessary to emulsify, but it is very difficult to prepare an emulsification system based on the moisturizer, and emulsification is performed. It is also very difficult to achieve both a base balance for adjusting and a base balance for improving the texture. In addition, no objective index has been established at present for the conditions that define the relationship between the combination of bases and the improvement of texture.

Conventionally, the following techniques have been proposed as techniques for treating papers with a chemical solution.

In Patent Document 1, when the additive composition is spray-applied to a sheet material such as paper, a liquid mixture containing the additive composition and a compressed fluid is formed in a closed pressurizing device system, and the liquid mixture is subjected to an orifice. More spraying has been proposed. As the additive composition used, a wide variety of types are exemplified without limitation depending on the desired properties and performance of the sheet product. In the examples in which the invention is specifically disclosed, it is described that a modified silicone softener, a modified lanolin softener, and an additive composition containing a lotion are sprayed onto tissue paper and uniformly applied.

Patent Document 2 proposes a facial tissue containing a tissue substrate and a nasal discharge skin irritant separating agent. Nasal juice skin irritants are described as being used with excipients such as lotions, and examples that specifically disclose the invention include 74-75% water, 5% glycerin, waxes, and separators. An example in which a lotion is prepared by blending a preparation and bentonite is described.

Patent Document 3 describes that a roll of toilet paper contains cream, but does not describe the details, particularly the combination with a moisturizer.

In Patent Documents 4 to 6, in a paper product such as a moisturizing tissue, a moisturizing agent is added when a paper treatment agent is produced, and a surfactant and an oily component are separately added as a single component. Is described.

Patent Document 4 proposes a paper product in which a base paper contains one or more oily substances such as hydrocarbons, vegetable oils, waxes, and higher alcohols, and a water-soluble wax. Examples of the water-soluble wax include polyethylene glycol having a melting point of 30 ° C. or higher and a solid at room temperature, having an average molecular weight of 1000 or higher and 20000 or lower. In addition to these oily substances (oil-based components) and water-soluble waxes, examples of using moisturizers such as glycerin and surfactants in combination are described, but these oily components and surfactants are separately independent components. Is added as.

Patent Document 5 proposes a chemical-containing thin paper containing a chemical solution containing a moisturizing agent in a base paper and having a water content within a specific range. It is described that the chemical solution may contain an emulsifying component (surfactant) and an oily component, but these surfactants and the oily component are separately added as a single component.

Patent Document 6 proposes a chemical solution-containing tissue paper containing microcapsules encapsulating components such as fragrances, antiviral agents, and skin softening components, and powder having an average particle size equal to or larger than the microcapsules. There is. As described in the description, this microcapsule uses a melamine resin or the like as a film agent, and the film is cured by a method such as coacervation, spheroidization, microsponge formation, or spray drying to form a wall material. The purpose is to express the effect of the encapsulating component with a hard capsule film, but the effect on the texture such as the softness and smoothness of such microcapsules and the powder used in combination with them is affected by surfactants and It is different from the oily component. Further, it is described that the chemical solution may contain an emulsifying component (surfactant) and an oily component together with the moisturizing agent, but these surfactants and the oily component are separately added as a single component.

Special Table 2001-591237 Special Table 2002-533365 JP-A-2002-136444 Japanese Unexamined Patent Publication No. 10-226986 JP-A-2007-100229 JP-A-2007-204869

However, it is generally very difficult to prepare an emulsifying system based on a moisturizer. In the above-mentioned conventional techniques, when a chemical solution is produced as a paper treatment agent, a moisturizing agent is added and a surfactant and an oily component are separately added as individual components, but as time passes, The chemical solution separates. For example, separation may be seen after 3 days have passed, and when the chemical solution is separated, the base paper cannot be uniformly impregnated with the chemical solution. Therefore, the preparation of the emulsification system for suppressing the separation of the chemical solution requires some ingenuity in the type and combination of each component, and is restricted. Against this background, there has been a demand for a technique for easily suppressing the separation of chemicals when adding a surfactant or an oily component in order to improve the texture.

The present invention has been made in view of the above circumstances, and in a paper treatment agent using a moisturizing agent, it is possible to impart a moist feeling and a good texture to the paper, and the paper treatment agent. It is an object of the present invention to provide a method for producing a paper treatment agent and a method for improving the texture of papers, which can easily suppress the separation of papers.

As a result of diligent studies by the present inventors, when an emulsion such as a cosmetic was prepared in advance and added as a raw material to produce a paper treatment agent, it was difficult to suppress separation over time. Even in a system containing an agent as a main component, it is possible to maintain a uniform emulsified state without easily separating by simply adding an emulsion, and in particular, separation is observed even after one month has passed after several days of separation. The stability over time is improved, which reduces restrictions on the types and combinations of surfactants and oily components, and even compared to systems in which surfactants and oily components are added separately. , We have found that the physical properties of emulsions lead to the improvement of the texture of papers, and have completed the present invention.

That is, in order to solve the above-mentioned problems, the method for producing a paper treatment agent of the present invention is a method for producing a paper treatment agent containing a moisturizing agent as a main component, and is characterized by adding an emulsion. There is.

The method for improving the texture of papers of the present invention is characterized in that the papers are treated with the paper treatment agent produced by the above method.

According to the present invention, it is possible to impart a good texture to papers with a moist feeling, and it is easy to suppress separation of the paper treatment agent.

The present invention will be described in detail below.
(Moisturizer)
In the present invention, the paper treatment agent contains a moisturizing agent as a main component. The moisturizing agent enhances the hygroscopicity and moisturizing property of the paper and gives the paper a moist feeling.

Here, the main component means that the moisturizing agent is blended in the largest mass among the additive components that are the raw materials of the paper treatment agent. Among them, the amount of the moisturizing agent added is preferably 50 to 99.9% by mass, more preferably 70 to 99% by mass, still more preferably 70 to 90% by mass, based on the total amount of the raw materials of the paper treatment agent.

Examples of the moisturizing agent used in the present invention include polyhydric alcohols, sugar alcohols, sugars, amino acids, hygroscopic alkalis / acids and salts thereof. These may be used individually by 1 type, and may be used in combination of 2 or more type.

Examples of the polyhydric alcohol include glycerin, diglycerin, triglycerin, polyglycerin, polyethylene glycol, 1,2-propanediol, 1,3-propanediol, dipropylene glycol, polypropylene glycol, 1,3-butanediol, and the like. 1,4-Butanediol, 1,2-pentanediol, 1,2-hexanediol, 3-methyl-1,3-butanediol, ethylene glycol, diethylene glycol, triethylene glycol, polyoxyethylene glycerin ether, isoprene glycol, Examples thereof include pentaerythritol and trimethylol propane.

Examples of sugar alcohols include sorbitol, inositol, glucosyltrehalose, xylitol, erythritol, mannitol, lactitol, fructose, oligosaccharide alcohol, maltitol, reduced palatinose, reduced candy, and reduced starch hydrolyzate.

Examples of sugars include fructose, glucose, lactose, xylose, psicose, maltose, water candy, oligosaccharide, maltose, trehalose, lactose, palatinit, sucrose, isomerized sugar, isomaltooligosaccharide, fructo-oligosaccharide, galactooligosaccharide, and xylooligosaccharide. , Lactose oligosaccharides, soybean oligosaccharides, raffinose, stevia, licorice, saccharin, astelpalm, acesulfam K, sclarose and the like.

Examples of amino acids include glycine, valine, leucine, isoleucine, serine, threonine, phenylalanine, arginine, lysine, aspartic acid, glutamic acid, cystine, cysteine, methionine, tryptophan and the like.

Examples of hygroscopic alkalis / acids and salts thereof include pantethein-S-sulfonate, trimethylglycine, betaine, pyrophosphate, sodium pyrophosphate, chondroitin sulfate, potassium pyrophosphate, hyaluronic acid, and hyaluronic acid. Examples thereof include sodium, sodium metaphosphate, potassium polyphosphate, sodium pyrrolidone carboxylate, sodium lactate, sodium chloride, calcium chloride, sodium alginate, sodium polyacrylate and the like.

Among these moisturizers, polyhydric alcohol is preferable, and glycerin is more preferable. When glycerin is used as the moisturizing agent, the ratio of glycerin to the total amount of the moisturizing agent is preferably 80% by mass or more, more preferably 90% by mass or more. Examples of the moisturizing agent used in combination with glycerin include sorbitol and the like.

(Emulsion)
In the present invention, the emulsion is not particularly limited as long as one of the oil-soluble component and the water-soluble component becomes fine particles and is dispersed in the other. For example, the water-soluble component is contained in the oil-soluble component. Examples include a dispersed water-in-oil type, an oil-in-oil-in-oil type, an oil-in-water type in which an oil-soluble component is dispersed in a water-soluble component, and a water-in-oil-in-water type. Among these, the oil-in-water type and the water-in-water type are preferable.

As the emulsion, cosmetics can be preferably used. Surfactants and oily ingredients, which are the ingredients of cosmetics, are suitable for improving the texture such as softness and smoothness. By adding cosmetics as emulsions, the paper treatment agent can be used over time. Separation is significantly suppressed.

The cosmetics are not particularly limited as long as they are emulsions, and examples thereof include skin cosmetics (basic cosmetics), make-up cosmetics, and hair care cosmetics. Among them, those applied to the skin or the like for the purpose of cleansing the body or making the appearance beautiful, and those having a mild action, for example, basic cosmetics (face cosmetics, body cosmetics, etc.) are preferable. Here, the cosmetics are not limited to general cosmetics, but also include quasi-drugs, designated quasi-drugs, external medicines, and the like.

The dosage form of the cosmetic is not particularly limited, and examples thereof include cream, milky lotion (milk), liquid (liquid), gel (gel) and the like (hereinafter, abbreviated as cream, milky lotion, liquid and gel in the present specification). May be done.). The creamy state is generally opaque and has no fluidity at room temperature (25 ° C.), and the milky liquid is generally opaque and has a white appearance and is fluid at room temperature (25 ° C.). Liquid (liquid) generally refers to a state in which the appearance is transparent and fluid at room temperature (25 ° C.), and gel (gel) generally refers to a state in which the appearance is transparent and normal temperature (25 ° C.). ℃) means no fluidity.

Creamy cosmetics include, for example, cold cream, nourishing cream, vanishing cream, emollient cream, moisturizing cream, moisture cream, night cream, eye cream, hand cream, lip balm, shaving cream, body cream, hair cream, etc. Examples include cleansing cream, baby cream, medical cream, skin cream, gel cream, botanical cream, fresh cream, whipped cream and the like.

Milky cosmetics include, for example, cold milk, nourishing milk, vanishing milk, emollient milk, moisturizing milk, moisturizing milk, night milk, eye milk, hand milk, lip milk, shaving milk, body milk, hair milk and cleansing. Examples include milk, baby milk, medical milk, skin milk, gel milk, botanical milk and the like.

Liquid lotions include, for example, cold liquid, nourishing liquid, vanishing liquid, emollient entrant, moisturizing liquid, moisturizing liquid, night liquid, eye liquid, hand liquid, lip liquid, shaving liquid, and body liquid (body). Lotion), Hair Liquid (Hair Lotion), Cleansing Liquid (Cleansing Lotion), Baby Liquid, Medical Liquid, Skin Liquid (Skin Lotion), Gel Liquid, Botanical Liquid, Lotion, Beauty Liquid, Cleansing Oil, etc. Be done.

Examples of gel-like cosmetics include cold gel, nourishing gel, vanishing gel, emollient gel, moisturizing gel, moisture gel, night gel, eye gel, hand gel, lip gel, shaving gel, body gel, hair gel, cleansing gel, baby gel, etc. Examples thereof include medical gels, skin gels and botanical gels.

Among the above-mentioned dosage forms, in the present invention, the emulsion is preferably at least one selected from cream, emulsion, liquid, and gel. In the present invention, the emulsion is preferably creamy. When the emulsion is creamy, the texture of the paper, especially the smoothness, is remarkably improved.

The emulsion is preferably a viscoelastic body. When the emulsion is a viscoelastic body, the texture of the paper, especially the smoothness, is improved. In the present invention, the viscoelastic body refers to a body having a strain value such that the phase angle with the stress when strain is applied is 45 °. The strain value at which the phase angle is 45 ° is not particularly limited and can be exemplified by 0.01% or more, but from the viewpoint of improving the texture, it is preferably 0.1% or more and 200% or less, preferably 0.1%. It is more preferably 100% or more, more preferably 0.1% or more and 80% or less, and particularly preferably 0.1% or more and 50% or less. When the emulsion is a cosmetic, the strain value of cream or the like can be 0.1% or more and 50% or less, and the texture of papers, especially the smoothness, is remarkably improved.

The phase angle with the stress when strain is applied and the strain value at which the phase angle is 45 ° can be obtained, for example, by measurement with a rheometer.

When the emulsion is of the oil-in-water type or the water-in-water type of the emulsion, the median diameter of the oil droplets in the emulsion is preferably 0.01 to 500 μm, more preferably 0.1 to 100 μm. The median diameter can be determined, for example, by measurement with a laser diffraction type particle size distribution measuring device (SALD-2300 or the like) manufactured by Shimadzu Corporation.

In the present invention, as the surfactant used for the emulsion, one type alone or two or more types can be used depending on the desired texture, emulsification characteristics and the like. Surfactants generally homogenize aqueous components such as water and oily components, which are normally immiscible, by emulsification.

In the present invention, the surfactant used in the emulsion can be appropriately selected from anionic surfactants, nonionic surfactants, cationic surfactants, and zwitterionic surfactants.

Examples of the nonionic surfactant include sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, and castor. Oil fatty acid ester, hardened castor oil fatty acid ester, ethylene glycol fatty acid ester, sucrose fatty acid ester, glycerin fatty acid ester, diglycerin fatty acid ester, polyglycerin fatty acid ester, organic acid monoglyceride, polyethylene glycol fatty acid monoethanolamide, propylene glycol fatty acid ester, Polyoxyethylene lanolin alcohol ether, polyoxyethylene alkyl ether, lauric acid alkanolamide, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil pyroglutamic acid fatty acid diester, pyroglutamic acid fatty acid glyceryl, polyoxyethylene glyceryl pyroglutamic acid fatty acid diester, Examples thereof include polyethylene-modified silicone.

Examples of anionic surfactants include alkylbenzene sulfonates, alkylnaphthalene sulfonates, alkyl sulfonates, α-olefin sulfonates, alkyl sulfates, alkyl sulfates, alkyl ether phosphates, and N-acyls. Amino acid salts, alkylallyl sulfonates, alkyl ether sulphates, alkylamide sulphates, alkyl phosphates, alkylphosphonic acids or salts thereof, alkylamide phosphates, alkylylalkyl taurine salts, fatty acid salts, polyoxyethylene alkyl Ether acetate, palm oil fatty acid methyl taurine sodium, polyoxyethylene alkyl ether sulfate, phosphate ester salt, polyoxyethylene alkyl ether phosphate, dialkyl sulfosuccinate, perfluoroalkyl phosphate ester, N-acyl-L -Glutamate, N-acyl-L-arginine ethyl-DL-pyrrolidone carboxylate and the like can be mentioned.

Examples of the cationic surfactant include monoalkyltrimethylammonium salt, dialkyldimethylammonium salt, alkylpyridinium salt, N, N-dialkyloxyethyl-N-methyl, N-hydroxyethylammonium salt, alkylamine salt and stearyl. Examples thereof include a dimethylbenzylammonium salt.

Examples of amphoteric surfactants include alkyl betaine, fatty acid amide propyl betaine, lauryl hydroxysulfobetaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, lecithin, hydrogenated lecithin, and alkyloxyhydroxypropyl. Arginine hydrochloride, lauryl hydroxysultaine, lauriminodipropionic acid, undecyl hydroxyethyl imidazolinium betaine sodium, lauryl aminodiphenyl sodium acetate, lauryl dimethylamino acetate betaine, N- [3-alkyloxy-2-hydroxypropyl] Examples thereof include -L-arginine hydrochloride, alkylhydroxysulfobetaine, alkyldimethylamine oxide, sodium alkylaminodipropionate, dihydroxyalkylmethylglycine, sodium lauryldiaminoethylglycine and the like.

Among these, a surfactant having an alkyl group or a carboxyl group (fatty acid) having 14 to 18 carbon atoms (C14-C18) is preferable, and an alkyl group or a carboxyl group having 16 to 18 carbon atoms (C16-C18) (C16-C18) ( Surfactants having (fatty acids) are more preferred. The use of these surfactants improves the texture (smoothness, softness, etc.). The alkyl group or carboxyl group (fatty acid) may be an unsaturated type or a saturated type, and may be a linear type or a branched type.

In the present invention, as the oily component used in the emulsion, one type alone or two or more types can be used depending on the desired texture, emulsifying characteristics and the like.

The oily component is not particularly limited, and examples thereof include hydrocarbons, fats and oils, esters, fatty acids, higher alcohols, silicone oils, waxes, steroids, etc., which are liquids and pastes at room temperature. , Solid or solid. These may be used individually by 1 type, and may be used in combination of 2 or more type.

Hydrocarbons include, for example, liquid paraffin, paraffin, solid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, ceresin, microcrystalline wax, petrolatum, squalane, polyethylene wax, polypropylene wax, hydrogenated polyisobutene, ethylene / α-. Examples thereof include olefin / co-oligocarbonate and ethylene-propylene polymer.

Examples of fats and oils include avocado oil, almond oil, flaxseed oil, olive oil, cacao oil, sesame oil, camellia oil, castor oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil, southern ka oil, and saflower oil. Soybean oil, evening primrose oil, camellia oil, corn oil, rapeseed oil, persic oil, palm kernel oil, palm oil, palm oil, beef fat, pork fat, horse fat, sheep fat, shea fat, cacao fat, turtle oil, mink oil , Egg yolk oil, parserine oil, sunflower oil, sunflower oil, jojoba oil, grape seed oil, macadamia nut oil, cottonseed oil, meadow home oil, palm oil, peanut oil, cod liver oil, rose hip oil, beef fat hardening oil, beef fat extremely hardened oil , Hardened castor oil, palm extremely hardened oil and the like.

Examples of the esters include stearic acid alkyl ester, palmitic acid alkyl ester, myristic acid alkyl ester, lauric acid alkyl ester, behenic acid alkyl ester, oleic acid alkyl ester, isostearic acid alkyl ester, 12-hydroxystearic acid alkyl ester, and the like. Undecylene acid alkyl ester, lanolin fatty acid alkyl ester, erucic acid alkyl ester, palm oil fatty acid alkyl ester, stearoyloxystearic acid alkyl ester, isononanoic acid alkyl ester, dimethyl octanoic acid alkyl ester, octanoic acid alkyl ester, lactate alkyl ester, ethyl hexane Acid alkyl ester, neopentanoic acid alkyl ester, malic acid alkyl ester, phthalic acid alkyl ester, citric acid alkyl ester, malonic acid alkyl ester, adipic acid alkyl ester, ethylene glycol fatty acid ester, propanediol fatty acid ester, butanediol fatty acid ester, tri Examples thereof include methylolpropane fatty acid ester, pentaerythritol fatty acid ester, polyglycerin fatty acid ester, trehalose fatty acid ester, and pentylene glycol fatty acid ester.

Examples of fatty acids include stearic acid, palmitic acid, myristic acid, lauric acid, behenic acid, oleic acid, isostearic acid, 12-hydroxystearic acid, undecylene acid, lanolin fatty acid, erucic acid, stearoyloxystearic acid and the like. Be done.

Examples of higher alcohols include lauryl alcohol, cetyl alcohol, cetostearyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, lanolin alcohol, hexyldecanol, myristyl alcohol, araquil alcohol, phytosterol, isostearyl alcohol, octyldodecanol and the like. Be done.

Examples of silicone oils include amino-modified silicone oil, epoxy-modified silicone oil, carboxyl-modified silicone oil, polyether-modified oil, polyglycerin-modified silicone oil, dimethylpolysiloxane, dimethylsilicone, polyether-modified silicone, and methylphenylsilicone. Alkyl-modified silicone, higher fatty acid-modified silicone, methylhydrogen silicone, fluorine-modified silicone, epoxy-modified silicone, carboxy-modified silicone, carbinol-modified silicone, amino-modified silicone, methylpolysiloxane, methylphenylpolysiloxane, silicone resin, dimethicone, methyl Examples thereof include hydrogen polysiloxane, methylcyclopolysiloxane, octamethyltrisiloxane, tetramethylhexasiloxane, and highly polymerized methylpolysiloxane.

Examples of waxes include mokuro, honey wax, hazerou, urushiro, sugar cane wax, palm wax, montan wax, carnauba wax, candelilla wax, rice bran, lanolin, whale wax, reduced lanolin, liquid lanolin, hard lanolin, ceresin, ozokelite and the like. Can be mentioned.

Examples of steroids include cholesterol, dihydrocholesterol, cholesterol fatty acid ester and the like.

Among these, oily components having an alkyl group or carboxyl group (fatty acid) having 14 to 18 carbon atoms (C14-C18), carboxylic acids having 14 to 18 carbon atoms (C14-C18), and 14 to 18 carbon atoms. Higher alcohols of (C14-C18) are preferable, an alkyl group or carboxyl group (fatty acid) having 16 to 18 carbon atoms (C16-C18) is an oily component, and a carboxyl having 16 to 18 carbon atoms (C16-C18) is used. Acids and higher alcohols having 16 to 18 carbon atoms (C16-C18) are more preferable. The use of these oily ingredients improves the texture (smoothness). The alkyl group or carboxyl group (fatty acid) may be an unsaturated type or a saturated type, and may be a linear type or a branched type.

In the present invention, the amount of the emulsion added to the paper treatment agent is preferably 0.01 to 30% by mass based on the tangible amount, that is, the amount as it is, based on the total amount of each raw material added to the paper treatment agent. .0 to 20% by mass is more preferable. Further, the effective amount, that is, 0.001 to 10% by mass, more preferably 0.05 to 5% by mass, in terms of the amount of each raw material added to the emulsion minus the amount of water added.

(Surfactants other than emulsions in paper treatment agents)
In the present invention, in addition to the above emulsion, a surfactant can be added to the paper treatment agent as a single component separately from the above emulsion as long as the effects of the present invention are not impaired. The surfactant added as a single component can improve the texture even if the amount of the emulsion added is reduced, and in particular, the softness of paper can be improved. That is, by adding the above emulsion, it is possible to suppress the separation of the paper treatment agent and improve the texture even if the addition amount is reduced. In the present invention, as the surfactant other than the emulsion, one type alone or two or more types can be used depending on the desired texture and the like.

Surfactants other than the emulsion can be appropriately selected from anionic surfactants, nonionic surfactants, cationic surfactants, and zwitterionic surfactants.

Examples of the nonionic surfactant include sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester, polyoxyethylene hydrogenated castor oil, polyoxyethylene castor oil, polyoxyethylene hydrogenated castor oil fatty acid ester, and castor. Oil fatty acid ester, hardened castor oil fatty acid ester, ethylene glycol fatty acid ester, sucrose fatty acid ester, glycerin fatty acid ester, diglycerin fatty acid ester, polyglycerin fatty acid ester, organic acid monoglyceride, polyethylene glycol fatty acid monoethanolamide, propylene glycol fatty acid ester, Polyoxyethylene lanolin alcohol ether, polyoxyethylene alkyl ether, lauric acid alkanolamide, polyoxyethylene glycerin fatty acid ester, polyoxyethylene hydrogenated castor oil pyroglutamic acid fatty acid diester, pyroglutamic acid fatty acid glyceryl, polyoxyethylene glyceryl pyroglutamic acid fatty acid diester, Examples thereof include polyethylene-modified silicone.

Examples of the anionic surfactant include alkylbenzene sulfonate, alkylnaphthalene sulfonate, alkyl sulfonate, α-olefin sulfonate, alkyl sulfate, alkyl sulfate ester salt, alkyl ether phosphate, and N-acyl. Amino acid salts, alkylallyl sulfonates, alkyl ether sulphates, alkylamide sulphates, alkyl phosphates, alkylphosphonic acids or salts thereof, alkylamido phosphates, alkylylalkyl taurine salts, fatty acid salts, polyoxyethylene alkyl Ether acetate, palm oil fatty acid methyl taurine sodium, polyoxyethylene alkyl ether sulfate, phosphate ester salt, polyoxyethylene alkyl ether phosphate, dialkyl sulfosuccinate, perfluoroalkyl phosphate, N-acyl-L -Glutamate, N-acyl-L-arginine ethyl-DL-pyrrolidone carboxylate and the like can be mentioned.

Examples of the cationic surfactant include monoalkyltrimethylammonium salt, dialkyldimethylammonium salt, alkylpyridinium salt, N, N-dialkyloxyethyl-N-methyl, N-hydroxyethylammonium salt, alkylamine salt and stearyl. Examples thereof include a dimethylbenzylammonium salt.

Examples of amphoteric surfactants include alkyl betaine, fatty acid amide propyl betaine, lauryl hydroxysulfobetaine, 2-alkyl-N-carboxymethyl-N-hydroxyethyl imidazolinium betaine, lecithin, hydrogenated lecithin, and alkyloxyhydroxypropyl. Arginine hydrochloride, lauryl hydroxysultaine, lauriminodipropionic acid, undecyl hydroxyethyl imidazolinium betaine sodium, lauryl aminodiphenyl sodium acetate, lauryl dimethylamino acetate betaine, N- [3-alkyloxy-2-hydroxypropyl] Examples thereof include -L-arginine hydrochloride, alkylhydroxysulfobetaine, alkyldimethylamine oxide, sodium alkylaminodipropionate, dihydroxyalkylmethylglycine, sodium lauryldiaminoethylglycine and the like.

Among these, a surfactant having an alkyl group or a carboxyl group (fatty acid) having 14 to 18 carbon atoms (C14-C18) is preferable, and an alkyl group or a carboxyl group having 16 to 18 carbon atoms (C16-C18) (C16-C18) ( Surfactants having (fatty acids) are more preferred. The use of these surfactants improves the texture (smoothness, softness, etc.). The alkyl group or carboxyl group (fatty acid) may be an unsaturated type or a saturated type, and may be a linear type or a branched type.

In the present invention, when a surfactant other than the emulsion is added to the paper treatment agent, the amount of the surfactant added is preferably 20% by mass or less based on the total amount of each raw material added to the paper treatment agent. More preferably, it is 0.01 to 20% by mass. The mass ratio of the emulsion to the surfactant other than the emulsion is preferably 1: 0.01 to 10000, more preferably 1: 0.1 to 1000 in terms of the effective amount of the emulsion. Here, the effective amount is an amount obtained by subtracting the amount of water added from the amount of each raw material added to the emulsion. When these amounts are within the above range, it is suitable for improving the texture while reducing the amount of the emulsion added, and particularly for improving the softness of papers.

(Oil components other than emulsions in paper treatment agents)
In the present invention, in addition to the above emulsion, an oily component can be added to the paper treatment agent as a single component separately from the above emulsion as long as the effects of the present invention are not impaired. The oily component added as this single component can improve the texture even if the amount of the emulsion added is reduced, and can improve the smoothness of paper in particular. That is, by adding the above emulsion, it is possible to suppress the separation of the paper treatment agent and improve the texture even if the addition amount is reduced. In the present invention, as the oily component other than the emulsion, one kind alone or two or more kinds can be used depending on the desired texture and the like.

The oily component is not particularly limited, and examples thereof include hydrocarbons, fats and oils, esters, fatty acids, higher alcohols, silicone oils, waxes, steroids, etc., which are liquids and pastes at room temperature. , Solid or solid. These may be used individually by 1 type, and may be used in combination of 2 or more type.

Hydrocarbons include, for example, liquid paraffin, paraffin, solid paraffin, light isoparaffin, light liquid isoparaffin, liquid isoparaffin, ceresin, microcrystalline wax, petrolatum, squalane, polyethylene wax, polypropylene wax, hydrogenated polyisobutene, ethylene / α-. Examples thereof include olefin / co-oligocarbonate and ethylene-propylene polymer.

Examples of fats and oils include avocado oil, almond oil, flaxseed oil, olive oil, cacao oil, sesame oil, camellia oil, castor oil, sesame oil, wheat germ oil, rice germ oil, rice bran oil, southern ka oil, and saflower oil. Soybean oil, evening primrose oil, camellia oil, corn oil, rapeseed oil, persic oil, palm kernel oil, palm oil, palm oil, beef fat, pork fat, horse fat, sheep fat, shea fat, cacao fat, turtle oil, mink oil , Egg yolk oil, parserine oil, sunflower oil, sunflower oil, jojoba oil, grape seed oil, macadamia nut oil, cottonseed oil, meadow home oil, palm oil, peanut oil, cod liver oil, rose hip oil, beef fat hardening oil, beef fat extremely hardened oil , Hardened castor oil, palm extremely hardened oil and the like.

Examples of the esters include stearic acid alkyl ester, palmitic acid alkyl ester, myristic acid alkyl ester, lauric acid alkyl ester, behenic acid alkyl ester, oleic acid alkyl ester, isostearic acid alkyl ester, 12-hydroxystearic acid alkyl ester, and the like. Undecylene acid alkyl ester, lanolin fatty acid alkyl ester, erucic acid alkyl ester, palm oil fatty acid alkyl ester, stearoyloxystearic acid alkyl ester, isononanoic acid alkyl ester, dimethyl octanoic acid alkyl ester, octanoic acid alkyl ester, lactate alkyl ester, ethyl hexane Acid alkyl ester, neopentanoic acid alkyl ester, malic acid alkyl ester, phthalic acid alkyl ester, citric acid alkyl ester, malonic acid alkyl ester, adipic acid alkyl ester, ethylene glycol fatty acid ester, propanediol fatty acid ester, butanjir fatty acid ester, trimethylol Examples thereof include propane fatty acid ester, pentaerythritol fatty acid ester, polyglycerin fatty acid ester, trehalose fatty acid ester, and pentylene glycol fatty acid ester.

Examples of fatty acids include stearic acid, palmitic acid, myristic acid, lauric acid, behenic acid, oleic acid, isostearic acid, 12-hydroxystearic acid, undecylene acid, lanolin fatty acid, erucic acid, stearoyloxystearic acid and the like. Be done.

Examples of higher alcohols include lauryl alcohol, cetyl alcohol, cetostearyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, lanolin alcohol, hexyldecanol, myristyl alcohol, araquil alcohol, phytosterol, isostearyl alcohol, octyldodecanol and the like. Be done.

Examples of silicone oils include amino-modified silicone oil, epoxy-modified silicone oil, carboxyl-modified silicone oil, polyether-modified oil, polyglycerin-modified silicone oil, dimethylpolysiloxane, dimethylsilicone, polyether-modified silicone, and methylphenylsilicone. Alkyl-modified silicone, higher fatty acid-modified silicone, methylhydrogen silicone, fluorine-modified silicone, epoxy-modified silicone, carboxy-modified silicone, carbinol-modified silicone, amino-modified silicone, methylpolysiloxane, methylphenylpolysiloxane, silicone resin, dimethicone, methyl Examples thereof include hydrogen polysiloxane, methylcyclopolysiloxane, octamethyltrisiloxane, tetramethylhexasiloxane, and highly polymerized methylpolysiloxane.

Examples of waxes include mokuro, honey wax, hazerou, urushirou, sugar cane wax, palm wax, montan wax, carnauba wax, candelilla wax, rice bran, lanolin, whale wax, reduced lanolin, liquid lanolin, hard lanolin, ceresin, ozokelite and the like. Be done.

Examples of steroids include cholesterol, dihydrocholesterol, cholesterol fatty acid ester and the like.

Among these, oily components having an alkyl group or carboxyl group (fatty acid) having 14 to 18 carbon atoms (C14-C18), carboxylic acids having 14 to 18 carbon atoms (C14-C18), and 14 to 18 carbon atoms. Higher alcohols (C14-C18) are preferable, oily components having an alkyl group or carboxyl group (fatty acid) having 16 to 18 carbon atoms (C16-C18), and carboxylics having 16 to 18 carbon atoms (C16-C18). Acids and higher alcohols having 16 to 18 carbon atoms (C16-C18) are more preferable. The use of these oily ingredients improves the texture (smoothness). The alkyl group or carboxyl group (fatty acid) may be an unsaturated type or a saturated type, and may be a linear type or a branched type.

(Other ingredients in paper treatment agents)
In the present invention, other components other than the above can be added as raw materials to the paper treatment agent as long as the effects of the present invention are not impaired. Such other components are not particularly limited, but are, for example, water, thickeners, fungicides, preservatives, defoamers, fragrances, pigments, pH adjusters, extracts, antioxidants, anti-inflammatory agents. Examples include inflammatory agents.

The amount of water added is preferably 1 to 30% by mass, more preferably 3 to 25% by mass, still more preferably 5 to 20% by mass, based on the total amount of each raw material added to the paper treatment agent.

(Manufacturing method of paper treatment agent)
In the present invention, the paper treatment agent can be produced by uniformly mixing each raw material according to a conventional method. For example, each raw material other than the emulsion can be stirred and mixed, the emulsion is added, and then the mixture is further stirred and mixed for production.

(How to improve the texture of paper)
By treating the paper with the paper treatment agent produced by the above method, the texture of the paper can be improved.

Examples of papers include tissue paper, toilet paper, facial tissue, pocket tissue, paper handkerchief, paper towel and the like.

The basis weight of the paper is preferably from ^{1~50g / m 3, 5~20g / m} 3 and more preferably. The number of ply (the number of laminated base papers) is preferably 1 to 5, and more preferably 2 to 3.

Examples of the method for treating paper with a paper treatment agent include a method of applying the paper to paper. Examples of the method of applying to paper include transfer, spraying and the like. Examples of the method of applying to paper by these methods include a flexographic printing method, a gravure printing method, a spray method, a rotor dampening method, and the like. In the flexographic printing method, a flexographic printing machine, which is a kind of letterpress printing machine, is used, and the paper processing agent is transferred to paper by a roller equipped with a printing plate such as rubber or synthetic resin whose surface is engraved. In the gravure printing method, a gravure printing machine, which is a kind of intaglio printing machine, is used, and the paper processing agent is transferred to papers by a roller mounted on a metal cylinder having a plate-making surface. In the spray method, the paper treatment agent is sprayed onto the paper in the form of mist from the nozzle by compressed air. In the rotor dampening method, the paper treatment agent is sprayed onto the paper in the form of a mist using a disk that rotates at high speed.

The coating amount of paper treating agent to paper is preferably ^{1~7g / m 3, 1.5~6g / m} 3 and more preferably.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to these Examples.
(1) Preparation of paper treatment agent A paper treatment agent was prepared according to the following procedure.
Glycerin, sorbitol, water, surfactant, and oily components are added to the beaker in the amounts shown in Tables 1 and 2, and after stirring and mixing at a temperature at which each raw material dissolves, each emulsion is added, and each raw material is further added. A paper treatment agent was prepared by stirring and mixing at a melting temperature for 1 hour. The surfactant and the oily component were added after being heated and dissolved. In Comparative Examples 3 to 7, each component was added as it was without emulsification so as to have the same amount of components as cream 6, cream 7, milky lotion 2, liquid 2 and liquid 4, respectively, and the paper treatment agent was stirred and mixed. Was prepared.

The following emulsions, surfactants and oils were used as shown in Tables 1 and 2. The amount of emulsion shown in Tables 1 and 2 is a tangible amount containing water, and the effective amount indicates the amount of components excluding water.

Emulsion (cream 1)
Arovina II hand cream (hand cream, effective content 13%, strain value 0.89%, oil-in-water emulsion, manufactured by Asahi Chemical Industry Co., Ltd.)

(Cream 2)
Pigeon Baby Cream Q (Baby Cream, effective content 34%, strain value 0.18%, oil-in-water emulsion, manufactured by Pigeon Home Products Co., Ltd.)

(Cream 3)
Botanical all-in-one gel cream (botanical gel cream, effective content 12%, strain value 17%, oil-in-water emulsion, manufactured by APL Co., Ltd.)

(Cream 4)
Moistage W Cold Cream a (Cold cream, effective content 65%, strain value 17%, oil-in-water emulsion, manufactured by Kracie Home Products Co., Ltd.)

(Cream 5)
Menterm Medicinal Cream G (Medical cream, effective content 54%, strain value 2.7%, oil-in-water emulsion, manufactured by Omi Brotherhood Co., Ltd.)

(Cream 6)
The oil phase is obtained by mixing and heating component A at 70 ° C., and the aqueous phase is obtained by mixing and heating component B at 70 ° C. The oil phase is added to the aqueous phase at 70 ° C., and the mixture is uniformly emulsified with a homomixer, and then cooled to 30 ° C. with stirring to reach a cream (effective content 30%, strain value 1.2%, oil-in-water type). Emulsion) was obtained.
(Component A)
Stearic acid 14.0% by mass Vaseline 2.0% by mass Polyoxyethylene sorbitan monostearic acid ester (20EO.) 1.5% by mass Glycerin monostearate 2.5% by mass (B component)
Propylene glycol 10.0% by mass Purified water 70.0% by mass

(Cream 7)
Put the raw materials other than the purified water shown below in a beaker and stir at 90 ° C for 30 minutes. Separately put purified water heated to 90 ° C into the beaker, stir at 90 ° C for 1 hour, and then cool while stirring at 40 ° C. Cream (effective content 50%, strain value 0.75%, oil-in-water emulsion) was obtained.
Sorbitan monostearic acid ester 4.0% by mass Polyoxyethylene castor oil (25EO) 6.0% by mass Polyoxyethylene sorbitan monostearic acid ester (20EO) 5.0% by mass Liquid paraffin 17. 0% by mass Sorbitan 0.5% by mass Palm extremely hydrogenated oil 17.0% by mass Olive oil 0.5% by mass Purified water 50.0% by mass

(Emulsion 1)
Moisturizing body milk (effective content 38%, strain value 72%, oil-in-water emulsion, manufactured by Shiseido Co., Ltd.)

(Emulsion 2)
Put the raw materials other than the purified water shown below in a beaker and stir at 90 ° C for 30 minutes. Separately put purified water heated to 90 ° C into the beaker, stir at 90 ° C for 1 hour, and then cool while stirring at 40 ° C. A milky lotion (effective content 25%, strain value 0.019%, oil-in-water emulsion) was obtained.
Liquid paraffin 17.5% by mass sorbitan monostearic acid ester 3.0% by mass polyethylene glycol sorbitan monostearic acid ester (20EO) 4.5% by mass
Purified water 75.0% by mass

(Liquid 1)
Hada Labo Egg Skin Liquid Makeup Remover (effective content 83%, strain value 0.040%, oil-in-water emulsion, manufactured by Rohto Pharmaceutical Co., Ltd.)

(Liquid 2)
Put the raw materials other than the purified water shown below in a beaker and stir at 40 ° C for 30 minutes. Separately put purified water heated to 40 ° C into the beaker and stir at 40 ° C for 1 hour to make a clear liquid cleansing liquid (effective component 75). %, Strain value 0.021%, oil-in-water emulsion) was obtained.
M Fine Oil ISG-20T (manufactured by Miyoshi Oil & Fat Co., Ltd.) 12.0% by mass M Fine Oil COG-7M (manufactured by Miyoshi Oil & Fat Co., Ltd.) 6.0% by mass M Fine Oil MCG-8M (manufactured by Miyoshi Oil & Fat Co., Ltd.) 12 .0% by mass concentrated glycerin 25.0% by mass 1,3-butanediol 5.0% by mass M Fine Oil EHP (manufactured by Miyoshi Oil & Fat Co., Ltd.) 15.0% by mass Purified water 25.0% by mass

(Liquid 3)
Makeup remover oil FB (effective content 98%, strain value 0.047%, water-in-oil emulsion, milk soap manufactured by Kyoshinsha Co., Ltd.)

(Liquid 4)
The raw materials shown below were placed in a beaker and stirred at 40 ° C. for 1 hour to obtain a colorless and transparent liquid cleansing oil (effective content 95%, strain value 0.016%, water-in-oil emulsion).
Liquid paraffin 65.0% by mass M Fine oil ISG-8M (manufactured by Miyoshi Oil & Fat Co., Ltd.) 25.0% by mass Concentrated glycerin 5.0% by mass Purified water 5.0% by mass

Surfactant Polyethylene Glycol Glyceryl Isostearate (20EO)
Sucrose stearate alkyl (C16-C18) phosphate ester distearyldimethylammonium chloride

Oil Squalene shea butter

The strain values of the cream, milky lotion, and liquid used to prepare the paper treatment agent were measured by the following method. <Distortion value>
At Anton Paar (AntonPaar) Co. rheometer MCR102, using a cone-plate (diameter 50 mm) as a test fixture, at measurement temperature 25 ° C., stepwise applied at a range of 10 ^-2% to 10 ^3% strain The strain value (%) at which the phase angle (°) with respect to the stress obtained when the mixture was allowed to be 45 ° was obtained. Frequency, and 1 Hz, measurement points of the distortion was a total of 51 points on a logarithmic elevation between 10 ^-2% to 10 ^3%.

<Effective amount>
With a Karl Fischer moisture meter (MKA-610, manufactured by Kyoto Denshi Kogyo Co., Ltd.), measure the moisture content (%) of the cream, emulsion, and liquid products used to prepare the paper treatment agent, and measure the moisture content from 100%. The excluded portion was taken as the effective portion.

(2) Preparation of Treated Paper The paper treatment agent obtained by the above method was dissolved in water to prepare a treatment liquid having an effective content of 25% by mass. Each treatment liquid was uniformly sprayed on both sides of a tissue paper (ply number 2, basis weight 15 g / m ² ) that had not been subjected to the softening treatment, in the same amount as the mass of the tissue paper. After that, it was air-dried for 24 hours and left in a constant temperature and humidity chamber (temperature 20 ° C., humidity 65% RH) for 12 hours or more, and after the moisture content became equilibrium, the sensory evaluation of the tissue paper was performed by 10 panels. Was done. The paper treatment agents according to Comparative Examples 3 to 7 could not be separated shortly after preparation to produce treated paper to which the treatment agent was uniformly applied, so that sensory evaluation could not be performed.

(3) Evaluation Sensory evaluation Five sheets of treated paper obtained by the above method were grasped with one hand, and the moist feeling, softness, and smoothness were evaluated according to the following criteria, and the average value was calculated for each item.

[Moist feeling]
5: Very moist 4: Moist 3: Slightly moist 2: Equivalent to no treatment agent 1: Not moist

[Softness]
5: Very soft 4: Soft 3: Slightly soft 2: Equivalent to no treatment agent 1: Not soft

[Smoothness]
5: Very smooth 4: Smooth 3: Slightly smooth 2: Equivalent to no treatment agent 1: Not smooth

Stability over time After preparing a paper treatment agent, about 70% was placed in a glass bottle, the lid was closed, the mixture was allowed to stand at room temperature, and the appearance was visually confirmed and evaluated according to the following criteria.

○: No separation is seen even after 1 month Δ: Separation is seen within 4 to 15 days ×: Separation is seen within 3 days

The evaluation results are shown in Tables 1 and 2.

From Table 1 and Table 2, no separation was observed in any of the examples even one month after the preparation of the paper treatment agent. In Comparative Examples 3 to 7, each component was added as it was without emulsification so as to have the same amount of components as cream 6, cream 7, milky lotion 2, liquid 2 and liquid 4, respectively, and the paper treatment agent was stirred and mixed. However, as can be seen in these examples, when the oily component and the surfactant were added separately, separation was observed within 3 days in the system containing the moisturizing agent as the main component. By adding it as an emulsion in this way, a clear improvement effect on stability over time has been confirmed, which makes it possible to easily maintain a uniform emulsified state, and the types and combinations of surfactants and oily components, etc. It has become possible to reduce restrictions.

Further, in each example to which the emulsion was added, moistness was imparted, and the smoothness and softness were improved based on the evaluation score 2 equivalent to that when the treatment agent was not used, and the emulsion was added to the treatment agent. Compared with Comparative Example 1 in which only the moisturizer and water were not added, and Comparative Example 2 in which the emulsifier was added alone, the smoothness and softness were generally improved. The stability over time was improved with the addition of either the oil-in-water type or the water-in-oil type emulsion, and the sensory properties of moistness, softness, and smoothness tended to be excellent.

Claims (2)

A method for producing a paper treatment agent containing 50 to 99.9% of a moisturizing agent.
Including the step of adding emulsion
The emulsion is a creamy oil-in-water emulsion, and contains at least one selected from hydrocarbons, oils and fats, esters, fatty acids, higher alcohols, waxes, and steroids as oily components. A method for producing a paper treatment agent, including. A method for improving the texture of papers by treating the papers with the paper treatment agent produced by the method according to claim 1 .