JP5594075B2 - Sanitary paper softener - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a sanitary paper softener, and more particularly to a sanitary paper softener that can impart a good firm feeling in addition to smoothness, softness and moist feeling.

  Since sanitary paper, especially tissue and toilet paper, touches the skin directly, good touch is required. For this reason, it is conventionally known that paper is impregnated with a moisturizing component such as polyhydric alcohol including glycerin and sugar to enhance softness and moist feeling.

  As sanitary paper with good softness and moistness has permeated the market, an even better feel has come to be demanded. Thus, for example, Patent Document 1 discloses that paper is impregnated with a chemical solution composed of a surfactant and a polyhydric alcohol to impart a smooth feeling to the paper in addition to a moist feeling. Further, Patent Document 2 can impart smoothness, softness, and moist feeling by impregnating paper with a chemical solution comprising a quaternary ammonium salt having an ester bond, a polyoxyethylene fatty acid sorbitan ester and a polyhydric alcohol. Is disclosed. As described above, smoothness, softness, and moist feeling have been imparted as a better touch.

  On the other hand, as a result of the widespread use of sanitary paper with good touch, the paper may feel weak due to its softness and moist feeling, especially when used for biting the nose or wiping off. . If the paper feels weak when using it, it will be torn or you will feel uneasy when using it to see if the moisture that it should absorb. Therefore, in addition to smoothness, softness and moist feeling, a good firm feeling is required as a touch of sanitary paper having a comfortable feeling of use.

Japanese Patent Laid-Open No. 2001-262489 JP 2008-7926 A

  Then, an object of this invention is to provide the softener for sanitary paper which can obtain the sanitary paper to which the favorable firm feeling was provided in addition to smoothness, softness, and a moist feeling.

  In order to achieve the above object, as a result of intensive studies, the present inventors applied sanitary paper with a composition containing glycerin, a specific quaternary ammonium salt, and a fatty acid salt, thereby achieving good smoothness, softness, In addition to the moist feeling, the present inventors have also found that a firm feeling can be imparted and a more comfortable touch can be imparted to sanitary paper.

  That is, the present invention comprises (a) glycerin, (b) a quaternary ammonium salt represented by the formula (1), and (c) a fatty acid salt having 12 to 28 carbon atoms, and (a) is 90 to 99% by mass. The total of (b) and (c) is 1 to 10% by mass, and the mass ratio of (b) and (c) is 40/60 to 80/20.

(Wherein R ₁ is an alkyl group or alkenyl group having 12 to 28 carbon atoms, R _{2 to} R ₄ are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and X is a halogen atom. )

  According to the sanitary paper softener of the present invention, by applying to sanitary paper, a sanitary paper that has a firm feeling and can be used comfortably in addition to smoothness, softness, and moist feeling can be obtained.

  Embodiments of the present invention will be described below. The softener for sanitary paper of the present invention comprises (a) glycerin as a component, (b) a quaternary ammonium salt represented by the above formula (1) as a component, and (c) a fatty acid having 12 to 28 carbon atoms as a component. Consists of salt.

(B) In the quaternary ammonium salt represented by the above formula (1) as a component, R ₁ is an alkyl group or alkylene group having 12 to 28 carbon atoms, specifically, a hexadecyl group, a heptadecyl group, or an okdadecyl group. , Nonadecyl group, icosyl group, henicosyl group, docosyl group, tetradocosyl group, hexadocosyl group, octadocosyl group and the like. Preferred are an okdadecyl group, a nonadecyl group, an icosyl group, a heneicosyl group, and a docosyl group. When the number of carbon atoms is 11 or less, good smoothness, softness and firm feeling may not be obtained. R _{2 to} R ₄ are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, preferably an alkyl group having 1 to 3 carbon atoms. Specific examples of the alkyl group having 1 to 3 carbon atoms include a methyl group, an ethyl group, and a propyl group. X is a halogen atom, and specific examples include fluorine, chlorine, bromine and iodine atoms. (B) The quaternary ammonium salt of a component can use 1 type (s) or 2 or more types.

  The fatty acid salt having 12 to 28 carbon atoms as the component (c) is an alkali metal salt or amine salt of a fatty acid having 12 to 28 carbon atoms. As the fatty acid, hexadecanoic acid, hexadecenoic acid, hepdadecanoic acid, octadecanoic acid, octadecenoic acid, octadecadienoic acid, octadecatrienoic acid, nonadecanoic acid, icosanoic acid, icosadienoic acid, icosatrienoic acid, icosatetraenoic acid, docosanoic acid, tetradocosanoic acid, Examples include hexadocosanoic acid and octadocosanoic acid. Preferred are octadecanoic acid, octadecenoic acid, octadecadienoic acid, octadecatrienoic acid, nonadecanoic acid, icosanoic acid, icosadienoic acid, icosatrienoic acid, icosatetraenoic acid, alkali metal salts and amine salts of docosanoic acid. More preferred are icosanoic acid, icosadienoic acid, icosatrienoic acid, icosatetraenoic acid, and docosanoic acid. When the number of carbon atoms is 11 or less, there may be cases where good smoothness and firm feeling cannot be obtained. Examples of the alkali metal include sodium or potassium, and examples of the amine include triethanolamine.

  As the fatty acid salt of the component (c), those obtained by adding the above-described fatty acid having 12 to 28 carbon atoms and a basic compound such as sodium hydroxide, potassium hydroxide, triethanolamine or the like can be used. (C) The fatty acid salt of a component can use 1 type (s) or 2 or more types.

  The content of glycerin as component (a) in the sanitary paper softener of the present invention is 90 to 99% by mass, preferably 94 to 99% by mass. Moreover, the sum total of content of (b) component and (c) component is 1-10 mass%, Preferably it is 1-6 mass%. When the component (a) is less than 90% by mass, or the total of the components (b) and (c) exceeds 10% by mass, the balance between smoothness, softness and firmness is lost, and a good moist feeling is obtained. It may not be obtained. In addition, when the component (a) exceeds 99% by mass, or the total of the components (b) and (c) is less than 1% by mass, the smoothness, softness and firmness may be insufficient. . In addition, the sum total of content of (a) + (b) + (c) is 100 mass%.

  The mass ratio (b) / (c) of the component (b) to the component (c) is 40/60 to 80/20, preferably 50/50 to 70/30. When the mass ratio (b) / (c) of component (b) to component (c) is less than 40/60, good softness may not be obtained. May be sufficient.

  The sanitary paper softener of the present invention can be used by diluting with a solvent such as water to reduce the viscosity in order to improve handling. Moreover, you may mix | blend the other components used as paper additives, such as an oil-based component, surfactant, and antiseptic | preservative, with this softener for sanitary paper. Examples of the sanitary paper to which the sanitary paper softener of the present invention is applied include tissue paper, toilet paper, and kitchen paper.

  Examples of a method for applying the sanitary paper softener of the present invention to sanitary paper include a coating method using a coater or a printing machine, a spray coating method, a dipping method, and the like. The amount applied to the sanitary paper is preferably 10 to 30% by mass with respect to the paper.

  Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples.

[Example of preparation of softener for sanitary paper]
The composition 1 (Example 1) was obtained by mixing 91% by mass of glycerin, 3.6% by mass of lauryltrimethylammonium chloride, and 5.4% by mass of triethanolamine isostearate. Moreover, like Example 1, each component of Tables 1-3 was mixed by the predetermined | prescribed ratio, and the compositions 2-13 (Examples 2-9, Comparative Examples 1-4) were prepared.

_R 1 to R ₄ in the table respectively represent _R 1 to R ₄ in the formula (1). In addition, X in Formula (1) in B-1 to 3 is a chlorine atom.

[Preparation example of tissue paper coated with softener for sanitary paper]
The prepared sanitary paper softener was diluted 4 times with ion-exchanged water and sprayed onto one piece of tissue paper (one set of two commercially available sheets) using hand spray. The amount of application in the table was determined from the weight difference of the tissue paper before and after spraying the softener, and the mass% of the effective amount sprayed on the tissue paper before spraying.

[Evaluation of sanitary paper softener]
Ten panelists evaluated the “smoothness”, “softness”, “moistness”, and “tightness” of the tissue paper coated with each of the compositions 1 to 14 on a five-point scale with the scores shown in Table 4. . In each item, the case where the total score of 10 people was 37 points or more was judged to be excellent. The tissue paper to which the compositions 1 to 14 were applied was used for evaluation after being stored for 48 hours in a constant temperature and humidity room at a room temperature of 23 ° C. and a humidity of 50%.

  In Examples 1 to 9, it is possible to obtain tissue paper that is smooth, soft, moist, and firm. On the other hand, in Comparative Example 1, the quaternary ammonium salt of the component (b) and the fatty acid salt of the component (c) are not blended, and the smoothness and firm feeling are insufficient. In Comparative Example 2, the fatty acid salt of component (c) is not blended, and the feeling is not sufficient. In Comparative Example 3, a fatty acid salt having a short chain length is blended in place of the fatty acid salt of component (c), and the smoothness and firmness are insufficient. In Comparative Example 4, the mass ratio (b) / (c) is out of the range defined in the present invention, and the feeling is not sufficient.

Claims (1)

(A) glycerin, (b) a quaternary ammonium salt represented by the formula (1), and (c) a fatty acid salt having 12 to 28 carbon atoms, wherein (a) is 90 to 99% by mass, (b) and ( The softener for sanitary paper whose sum of c) is 1-10 mass%, and whose mass ratio of (b) and (c) is 40 / 60-80 / 20.

(Wherein R ₁ is an alkyl group or alkenyl group having 12 to 28 carbon atoms, R _{2 to} R ₄ are each independently a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, and X is a halogen atom. )