JP2013189725A - Sanitary paper - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide sanitary paper that has a more excellent feeling than conventional sanitary paper does, and is good in productivity since it is in a liquid form at 25°C.SOLUTION: The sanitary paper contains 1 to 50% of a treatment agent, based on the dry weight of paper, that includes at least the following components A to C in a weight ratio of components A/B/C of 100/0.001-0.2/0.005-1.5, and has a melting point such that it is in a liquid form at 25°C: A is a polyhydric alcohol; B is an ester compound of a 8-22C aliphatic acid and a sugar; and C is a quaternary ammonium salt having an 8-22C alkyl group.

Description

  The present invention relates to sanitary paper.

Thin paper for household use, represented by tissue paper and toilet paper, has recently been demanded to provide paper with flexibility and moisture retention properties and excellent texture such as comfort. ing. In order to improve the texture of paper, for example, the following Patent Documents 1 to 3 have proposed a method of adding a chemical solution to paper by surface coating (external addition) or the like.
Examples of chemicals to be included in paper include polyhydric alcohols, saccharides and oil substances (Patent Document 1), quaternary ammonium salts having ester bonds, sorbitan fatty acid esters added with polyethylene oxide, and polyhydric alcohols (Patent Document 2). ), Sugar derivatives such as esters of fatty acids and sugars (Patent Document 3) have been proposed as a partial component of a lotion composition that is semisolid or solid at 20 ° C.

Patent No. 2996319 JP 2008-007926 A Special table hei 11-511046

  An object of the present invention is to provide a sanitary paper that is more productive and has a better texture than conventional sanitary paper.

  The inventors of the present invention obtain a sanitary paper containing a specific composition and containing a treatment agent that is liquid at 25 ° C., which is more productive and has a better texture than conventional sanitary paper. As a result, the present invention has been completed.

That is, this invention is the sanitary paper containing the following.
(1) A treatment agent comprising at least the following components A to C, wherein the weight ratio of the components A / B / C is 100 / 0.001 to 0.2 / 0.005 to 1.5 and is liquid at 25 ° C. Sanitary paper containing 1 to 50% of the dry weight of the paper.
A: Polyhydric alcohol B: Ester compound of fatty acid having 8 to 22 carbon atoms and sugar C: Quaternary ammonium salt having an alkyl group having 8 to 22 carbon atoms

(2) At least the following A to D components are included, and the weight ratio of A / B / C / D components is 100 / 0.001 to 0.2 / 0.005 to 1.5 / 0.01 to 3, Sanitary paper containing 1 to 50% of the treatment agent which is liquid at 25 ° C. with respect to the dry weight of the paper.
A: Polyhydric alcohol B: Ester compound of fatty acid having 8 to 22 carbon atoms and sugar C: Quaternary ammonium salt having an alkyl group and / or alkenyl group having 8 to 22 carbon atoms D: Hydrocarbon

(3) The basis weight per sheet of the paper containing the treatment agent is 10 to 45 g / m ² , and the water absorption (JIS S 3104-1992) is 0.1 to 3.5 seconds by overlapping two sheets. The sanitary paper according to (1) or (2), characterized in that it exists.

  The sanitary paper of the present invention has a feature that is superior in texture compared to known sanitary paper.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described in detail.

  The sanitary paper according to the present invention contains a treatment agent containing the following components (A) to (C) or the following (A) to (D). (A): polyhydric alcohol, (B): ester compound of fatty acid having 8 to 22 carbon atoms and sugar, (C): quaternary ammonium salt having an alkyl group and / or alkenyl group having 8 to 22 carbon atoms. (D) Hydrocarbon.

  The weight ratio of the A / B / C component is 100 / 0.001-0.2 / 0.005-1.5 in the proportion of the components (A) to (C) contained in the treatment agent. In the above weight ratio range, the preferable range of the B component is 0.005 to 0.2, more preferably 0.005 to 0.15, and the preferable range of the C component is 0.02 to 1.5, 0.02 to 1.1.

  The ratio of the components (A) to (D) contained in the treatment agent is such that the weight ratio of A / B / C / D component is 100 / 0.001 to 0.2 / 0.005 to 1.5 / 0. 01 to 3. In the above weight ratio range, the preferable range of the B component is 0.005 to 0.2, more preferably 0.005 to 0.15, and the preferable range of the C component is 0.02 to 1.5, It is 0.02-1.1, and as a preferable range of D component, it is 0.03-3, Furthermore, it is 0.03-2.5.

  The treatment agent containing the components (A) to (C) or the components (A) to (D) used in the present invention is a fluid liquid at 25 ° C. If the treatment agent is solid at 25 ° C., it is difficult to apply the treatment agent to the paper surface, and the texture of the sanitary paper deteriorates. Preferably, when the viscosity of the treating agent is 5 to 200 mPa · s at 25 ° C., application to paper becomes easy, and sanitary paper excellent in the effect of improving the texture is easily obtained.

  The sanitary paper of the present invention is a total of 1 to 50%, preferably 5 to 40%, of the treatment liquid containing the components (A) to (C) or the components (A) to (D) based on the dry weight of the paper. contains.

  The polyhydric alcohol (component A) used in the present invention is an alcohol having a divalent or higher hydroxyl group. Specific examples include glycerin, diglycerin, ethylene glycol, propylene glycol, 1,3-butylene glycol, polyglycerin, polyethylene glycol, polypropylene glycol, sorbitol, xylitol, and erythritol. Among them, glycerin having excellent texture is preferable.

  The ester compound (component B) used in the present invention is an ester compound of a fatty acid having 8 to 22 carbon atoms and a sugar. Examples of the fatty acids having 8 to 22 carbon atoms include fatty acids having 8 to 22 carbon atoms and esters of fatty acids. The fatty acid may be any of a straight chain fatty acid having 8 to 22 carbon atoms, a branched chain fatty acid, a saturated fatty acid, and an unsaturated fatty acid. Examples of the fatty acid esters include acid anhydrides of the fatty acids and esters of the lower fatty acids (methyl alcohol, ethyl alcohol, propyl alcohol) having 1 to 5 carbon atoms, particularly 1 to 3 carbon atoms. It is done. These can be used alone or in combination of two or more. Examples of the sugar include oligosaccharides such as monosaccharides, disaccharides, and trisaccharides. Monosaccharides include aldoses such as allose, talose, growth, glucose, altrose, mannose, galactose, idose, ribose, lyxose, xylose, arabinose, apiose, ketose such as psicose, fructose, sorbose, tagatose, ribulose, xylulose, etc. Kind. Examples of the disaccharide and trisaccharide include sucrose, lactose, maltose, trehalose, turanose, cellobiose, raffinose, melezitose, maltotriose and the like. Among them, sucrose ester compounds of lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid and oleic acid are preferable as the ester compound (component B) because of excellent texture.

  The quaternary ammonium salt (C component) having an alkyl or alkenyl group having 8 to 22 carbon atoms used in the present invention has a quaternary ammonium salt in the molecule, and What is necessary is just to have an alkyl group or an alkenyl group in a side chain. One of these can be used alone, or two or more of them can be used in combination. Among the components C, the compound represented by the following general formula (1) is preferable because of excellent texture.

（但し、式中、Ｒ^１は炭素数６〜２２のアルキル基又は炭素数６〜２２のアルケニル基を、Ｒ^２とＲ^３とは（ＥＯ）_ｍ（ＰＯ）_ｎＨ、炭素数１〜２２のアルキル基、及び炭素数１〜２２のアルケニル基から選ばれる１種を示し、かつＲ^２とＲ^３とは同一又は相異していてもよく、Ｒ^１〜Ｒ^３のうち少なくとも１つは炭素数８〜２２のアルキル基及び／又は炭素数８〜２２のアルケニル基であり、Ｘ⁻は陰イオンであり、前記Ｅはエチレン基を示し、前記Ｐはプロピレン基を示し、ｍとｎとの合計は１〜６０である。エチレンオキサイド、及び／又はプロピレンオキサイドの付加形態はランダムでもブロックでも良い。なお、ｍ及びｎは平均付加モル数である。）
上記一般式（１）で表される第４級アンモニウム塩としては、具体的にはトリメチルモノラウリルアンモニウムクロライド、トリメチルモノセチルアンモニウムクロライド、トリメチルモノパルミチルアンモニウムクロライド、トリメチルモノステアリルアンモニウムクロライド、トリメチルモノオレイルアンモニウムクロライド、トリメチルモノベヘニルアンモニウムクロライド、ジメチルジラウリルアンモニウムクロライド、ジメチルジセチルアンモニウムクロライド、ジメチルジパルミチルアンモニウムクロライド、ジメチルジステアリルアンモニウムクロライド、ジメチルジオレイルアンモニウムクロライド、ジメチルジベヘニルアンモニウムクロライド、ポリアルキレンオキシモノメチルジオレイルアンモニウムクロライド、ビス(ポリアルキレンオキシ)モノメチルモノオレイルアンモニウムクロライド、ジヤシアルキルジメチルアンモニウムクロライドが挙げられる。

(In the formula, R ¹ is an alkyl group having 6 to 22 carbon atoms or an alkenyl group having 6 to 22 carbon atoms, and R ² and R ³ are (EO) _m (PO) _n H, carbon numbers 1 to 22). And an alkyl group having 1 to 22 carbon atoms, and R ² and R ³ may be the same or different, and at least one of R ^{1 to} R ³ is An alkyl group having 8 to 22 carbon atoms and / or an alkenyl group having 8 to 22 carbon atoms, X ⁻ is an anion, E represents an ethylene group, P represents a propylene group, m and n, The total addition of ethylene oxide and / or propylene oxide may be random or block, and m and n are the average number of moles added.)
Specific examples of the quaternary ammonium salt represented by the general formula (1) include trimethyl monolauryl ammonium chloride, trimethyl monocetyl ammonium chloride, trimethyl monopalmityl ammonium chloride, trimethyl monostearyl ammonium chloride, trimethyl monooleyl. Ammonium chloride, trimethyl monobehenyl ammonium chloride, dimethyl dilauryl ammonium chloride, dimethyl dicetyl ammonium chloride, dimethyl dipalmityl ammonium chloride, dimethyl distearyl ammonium chloride, dimethyl dioleyl ammonium chloride, dimethyl dibehenyl ammonium chloride, polyalkyleneoxy monomethyl Dioleyl ammonium chloride, bis ( Polyalkyleneoxy) monomethyl monooleyl ammonium chloride and dicoco alkyldimethyl ammonium chloride.

  Among these, an ammonium chloride compound having a mono- or distearyl group, a mono- or dilauryl group, a mono- or dioleyl group that is excellent in the texture improving effect is preferable.

Examples of the hydrocarbon (D component) used in the present invention include paraffinic hydrocarbons, naphthenic hydrocarbons, aromatic hydrocarbons, and olefinic hydrocarbons.
Specific examples include natural waxes such as mineral oil, liquid paraffin, animal wax, vegetable wax, mineral wax, and petroleum wax, and synthetic waxes such as Fischer-Tropsch wax, caster wax, polyethylene wax, and polypropylene wax. One of these can be used alone, or two or more of them can be used in combination. Mineral oils having excellent texture improvement paper Among these, liquid paraffin are preferable, kinematic viscosity at 40 ℃ is ^{2 mm} 2 / s or more, more preferably 3~80mm ² / s.

  The said processing agent used by this invention can mix | blend other components other than said (A)-(D) component arbitrarily. Examples of other components include water, non-cationic surfactants, antifoaming agents, preservatives, and fragrances. When water is added as the other component, it is preferable that water is 1 to 45% by weight, and further 5 to 40% by weight of the entire treatment agent because a sanitary paper excellent in texture can be easily obtained. When adding other components other than water, it is preferable that it is 5 weight% or less among the whole processing agent.

Nonionic, anionic, and amphoteric surfactants can be used as surfactants other than cationic surfactants, and nonionic surfactants that have a small adverse effect on the stability of the treatment agent are preferred.

  As the antifoaming agent, polysiloxane, inorganic filler composite compound type silicon oil or emulsion, polyoxyethylene-modified silicon, amino-modified silicon, an adduct of polyoxyalkylene and higher alcohol, and the like can be used.

  Examples of the preservative include oxybenzoic acid preservatives such as benzoate, methylparaben and ethylparaben; organic nitrogen preservatives represented by hexahydro-1,3,5-tris (2-hydroxyethyl) -S-triazine 1,2-benzisothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 5-chloro-2-methyl-4-isothiazolin-3-one, 2-n-octyl-4-isothiazoline; Organic nitrogen sulfur preservatives typified by N-butyl-1,2-benzisothiazolin-3-one; 1,2-bis (bromoacetoxy) ethane, 2,2-dibromo-3-nitrilopropionamide, bistri Organic bromide preservatives such as bromomethylsulfone; as represented by 4,5-dichloro-1,2-dithiol-3-one Aircraft sulfur-based preservatives and the like can be used.

  As perfumes, α-amylcinnamaldehyde, γ-undecalactone, eugenol, octanol, ethyl cinnamate, geraniol, isoamyl acetate, ethyl acetate, methyl salicylate, γ-nonalactone, vanillin, paramethylacetophenone, hydroxycitronellal , Benzyl alcohol, methyl ethyl ketone, dl-menthol, 1-menthol and linalool can be used alone or in combination.

  The sanitary paper of the present invention can be obtained by applying the treatment agent to paper. First of all, there is a method in which a solution of the above-mentioned treatment agent is directly spray-coated on a web at a portion where the water content after the web formation in the paper making process is 20% or less. The drug solution preferably has a viscosity of 20 mPa.S or less. When the solution is an aqueous solution, auxiliary drying equipment (for example, an after dryer, a multi-cylinder heating roll, a floater hot air drying equipment, an infrared drying equipment, or the like) is required depending on the amount of liquid to be applied. It is desirable that the water content in reel winding is at least 10% or less.

  In addition, there is a method of applying a solution containing the above-mentioned treatment agent to a web previously made by a paper machine in a secondary process. This can be done by a coater or printer. In the case of coater and gravure printing, by changing the groove depth and number of lines of gravure roll, and in the case of flexographic printing, by changing the groove depth and number of lines of anilox roll and the shape of the printing pattern, and quality improver The coating amount can be changed by changing the concentration of the solution. In order to avoid troubles such as coating unevenness and web adhesion to the coating roll, the viscosity of the treating agent solution to be applied is 200 mPa.s. It is desirable that it is s or less.

The sanitary paper of the present invention has a basis weight per sheet of 10 to 45 g / m ² in order to improve the texture. In order to improve the wiping effect when used as sanitary paper, the water absorption (Japanese Industrial Standard JIS S 3104) is set to 0.1 to 3.5 seconds for two sheets of paper.

  The pulp material of the sanitary paper of the present invention includes bleached and unbleached chemical pulp such as kraft pulp and sulfite pulp; bleached and unbleached high yield pulp such as groundwood pulp, mechanical pulp and thermomechanical pulp; Examples include used paper pulp such as used paper, cardboard used paper, and deinked used paper, and these can be used alone or in combination of two or more.

  The sanitary paper of the present invention is suitable for toilet paper, tissue paper, towel paper, and napkin base paper.

  Hereinafter, although an example and a comparative example of the present invention are given and explained concretely, the present invention is not limited to these examples. In each example, all parts and percentages are by weight unless otherwise specified.

Example 1
In a 300 mL flask equipped with a stirrer, 100 parts of glycerin as component (A), 0.14 parts of sucrose behenic acid ester (mono / di or tri = 20/80) as component (B), mono as component (C) Add 0.3 parts of stearyltrimethylammonium chloride, 1 part of polyoxyethylene (5) stearyl ether, 30 parts of water, stir at 50 ° C. for 30 minutes, cool and use a Brookfield rotational viscometer at 25 ° C. A treatment solution having a viscosity of 56 mPa · s measured in step 1 was obtained. About the obtained process liquid, it confirmed that it was a fluid liquid. Further, with respect to the obtained treatment liquid, tissue paper (pulp: bleached chemical pulp basis weight 11 g / m ² ) with respect to a set of two sheets, the treatment liquid shows the adhesion amount shown in Table 1 (A to D components with respect to the dry weight of the paper) In addition, the sanitary paper of Example 1 was obtained by air-drying under air temperature conditions of 23 ° C. and humidity of 50% RH for 24 hours.

※１：エステル組成：モノ／ジ又はトリ＝２０／８０
※２：エステル組成：モノ／ジ又はトリ＝７５／２５
※３：エステル組成：モノ／ジ又はトリ＝８０／２０
※４：ジステアロイルエチルヒドロキシエチルモニウムメトサルフェート/セトステアリルアルコール＝７５／２５の混合物を使用。表中の数値はジステアロイルエチルヒドロキシエチルモニウムメトサルフェートについての含有量を表す。
※５：密度０．８４ｇ／ｃｍ^３（１５℃）、動粘度７ｍｍ^２／ｓ(４０℃)
※６：組成パラフィン系／ナフテン系＝７／３、密度０．８６g/ｃｍ^３（１５℃）、動粘度３２ｍｍ^２/s(４０℃)
※７：密度０．９２ｇ／ｃｍ^３（１５℃）、動粘度５ｍｍ^２／ｓ（２５℃）

(Examples 2-8, Comparative Examples 1-5)
Treatment liquids were prepared in the same manner as in Example 1 with the formulations shown in Tables 1 and 2, and sanitary papers of Examples 2 to 8 and Comparative Examples 1 to 5 were obtained.

* 1: Ester composition: Mono / di or tri = 20/80
* 2: Ester composition: Mono / di or tri = 75/25
* 3: Ester composition: Mono / di or tri = 80/20
* 4: Use a mixture of distearoylethylhydroxyethylmonium methosulfate / cetostearyl alcohol = 75/25. The numbers in the table represent the content for distearoylethylhydroxyethylmonium methosulphate.
* 5: Density 0.84g / cm ³ (15 ° C), kinematic viscosity 7mm ² / s (40 ° C)
* 6: Composition paraffin type / naphthene type = 7/3, density 0.86 g / cm ³ (15 ° C.), kinematic viscosity 32 mm ² / s (40 ° C.)
* 7: Density 0.92 g / cm ³ (15 ° C.), kinematic viscosity 5 mm ² / s (25 ° C.)

(Comparative Example 6)
When a treating agent was prepared in the same manner as in Example 1 with the formulation shown in Table 2, the treating agent could not be applied because the fluidity of the treating agent was lost at 25 ° C.

<Evaluation of water absorption>
The sanitary papers of Examples 2 to 8 and Comparative Examples 1 to 5 were measured according to the water absorption of Japanese Industrial Standard JIS S 3104. The measurement results are summarized in Tables 1 and 2.
In order to improve the wiping effect when used as sanitary paper, the water absorption is preferably in the range of 0.1 to 3.5 seconds when two sheets are stacked.

<Evaluation of texture>
Two sanitary paper textures of Examples 1 to 6 and Comparative Examples 1 to 5 were gripped to perform sensory evaluation. As a reference, the feel of Comparative Example 1 was given a score of 3, and the textures of Examples 1 to 6 and Comparative Examples 2 to 5 were evaluated. The evaluation results are summarized in Tables 1 and 2.

<Evaluation of foamability>
In a 100 mL beaker, 50 mL of the formulation solution used in Examples 1 to 6 and Comparative Examples 1 to 3 was added, stirred at 500 rpm (using a rotor with a length of 3 cm and a diameter of 5 mm) for 5 minutes, and then allowed to stand for 1 minute. The height of subsequent foaming was measured.
If foaming is applied to the paper, the coating speed cannot be increased. Therefore, it is preferable that the foaming is small in order to improve productivity.

As is clear from the results shown in Tables 1 and 2, the sanitary papers of Examples 1 to 8 of the present invention showed a better texture than the sanitary papers of Comparative Examples 1 to 6. Among these, since Examples 3 to 8 have excellent water absorption, the effect of wiping as sanitary paper is good, and since the foaming of the coating liquid is small, it is possible to obtain sanitary paper with improved productivity. It suggests.
In Comparative Examples 1, 2, and 5, the feeling of moist feeling was inferior to that of the Examples, and in Comparative Examples 3 and 4, the paper was too sticky and inferior to the texture.

  As mentioned above, although this invention was demonstrated using embodiment, it cannot be overemphasized that the technical scope of this invention is not limited to the range as described in the said embodiment. It will be apparent to those skilled in the art that various modifications or improvements can be added to the above-described embodiments. Further, it is apparent from the description of the scope of claims that embodiments with such changes or improvements can also be included in the technical scope of the present invention.

Claims (3)

A processing agent containing at least the following components A to C, wherein the weight ratio of components A / B / C is 100 / 0.001 to 0.2 / 0.005 to 1.5 and is liquid at 25 ° C. Sanitary paper containing 1 to 50% of the dry weight.
A: Polyhydric alcohol B: Ester compound of fatty acid having 8 to 22 carbon atoms and sugar C: Quaternary ammonium salt having an alkyl group having 8 to 22 carbon atoms At least the following A to D components are included, and the weight ratio of A / B / C / D components is 100 / 0.001 to 0.2 / 0.005 to 1.5 / 0.01 to 3, at 25 ° C. Sanitary paper containing 1 to 50% of a liquid treatment agent based on the dry weight of the paper.
A: Polyhydric alcohol B: Ester compound of fatty acid having 8 to 22 carbon atoms and sugar C: Quaternary ammonium salt having an alkyl group and / or alkenyl group having 8 to 22 carbon atoms D: Hydrocarbon The basis weight per sheet of the paper containing the treatment agent is 10 to 45 g / m ² , and the water absorption (JIS S 3104-1992) is 0.1 to 3.5 seconds when two sheets are stacked. The sanitary paper according to claim 1 or 2, characterized by the above.