JP7101636B2 - Use of absorbent articles, cleaning sheets, and wipe improvers - Google Patents

Description

The present disclosure discloses the use of absorbent articles containing a wiping property improving agent, cleaning sheets containing a wiping property improving agent, and textile products for improving the wiping property of body fluids. Regarding.

Absorbent articles containing lotion compositions that prevent body fluids from adhering to the skin are known.
For example, in Patent Documents 1 and 2, an absorbent article intended to be worn by a wearer, wherein at least a portion of the surface of the article facing the body contains a lotion composition, said lotion. The composition comprises at least one first compound that is liquid at 25 ° C and at least one second compound that is solid at 25 ° C.
The first compound is a liquid polyethylene glycol derivative or a liquid polypropylene glycol or a derivative thereof, and the second compound is a solid polyethylene glycol derivative or a solid polypropylene glycol or a derivative thereof, or
The first compound is liquid polyethylene glycol or a derivative thereof, or liquid polypropylene glycol or a derivative thereof, and the second compound is a solid nonionic surfactant having an HLB value of at least 10.
The first compound is a liquid fatty acid ester having at least one fatty acid unit and at least one ethylene glycol unit, and the second compound is solid polyethylene glycol or
The first compound is liquid polyethylene glycol or a derivative thereof or liquid polypropylene glycol or a derivative thereof, and the second compound is a solid aliphatic compound selected from the group consisting of solid fatty acids and solid soaps.
When the solid nonionic surfactant is an ethoxylated fatty alcohol, the HLB value is at least 13.
Disclosed are absorbent articles in which the total amount of liquid is greater than the total amount of solid when the solid aliphatic compound is a solid fatty acid.

Patent Document 3 describes a base material containing a lotion composition, wherein the lotion composition is described as a base material.
a) A liquid fatty acid ester that is liquid at 25 ° C. and contains liquid polyethylene glycol, liquid polyethylene glycol derivative, liquid polypropylene glycol, liquid polypropylene glycol derivative, liquid polyhydric alcohol, at least one fatty acid unit and at least one ethylene glycol unit. A liquid fatty acid ester containing at least one fatty acid unit and at least one propylene glycol unit, and one or more compounds A of about 20 to about 80% by weight selected from the group consisting of mixtures thereof.
b) Solid at 25 ° C., solid polyethylene glycol derivative, solid polypropylene glycol derivative, solid alkoxylated nonionic surfactant, solid glycerol ester, solid sorbitan and derivative, solid sucrose ester and its derivatives, solid glucose ester and its With about 5 to about 50% by weight of one or more compounds B selected from the group consisting of derivatives and mixtures thereof,
c) C14-C22 fatty alcohols, C12-C22 fatty acids, solid fatty soaps, and waxes selected from the group consisting of carnauba, ozokelite, beeswax, candelilla, paraffin, selecin, esparto, resowax, isoparaffin, and mixtures thereof. From about 1 to about 40% by weight of one or more crystallization accelerators C selected from the group consisting of
Including
A substrate having a weight ratio of compound A to the crystallization accelerator (C) of 3: 2 to 10: 1 is disclosed.

Special Table 2010-525862 Publication No. Special Table 2010-526629 Special Table 2013-504408 Publication No.

The lotion compositions described in Patent Documents 1-3 have been described to reduce the adhesion of feces or menstrual blood to the skin, and after an absorbent article has been used and removed from the wearer, feces. Alternatively, it is described that menstrual blood can be easily removed.
However, as confirmed by the inventors of the present application, it is difficult to completely prevent feces or menstrual blood from adhering to the skin when an absorbent article containing the lotion composition described in Patent Documents 1 to 3 is worn. , And it was found that feces or menstrual blood adhering to the skin was not easy to remove.

Further, the lotion compositions described in Patent Documents 1 to 3 are the second compound (Patent Documents 1 and 2) or compound B (Patent Document 3), which is solid at 25 ° C., and the crystallization accelerator C (Patent Document 3). The lotion composition becomes solid at 25 ° C., and the absorbent article is derived from the lotion composition and is inferior in wearing feeling at the initial stage of wearing, and the lotion composition is difficult to exert its function. rice field.
Therefore, it is an object of the present disclosure to provide an absorbent article having excellent wiping property of highly viscous body fluid adhering to the skin.

The present disclosures are an absorbent article comprising a liquid permeable sheet, a liquid impermeable sheet, and an absorber between them, and the absorbent article improves the wiping property of a body fluid. It contains a wiping property improving agent or a wiping property improving composition containing the wiping property improving agent, and the wiping property improving agent has an IOB of 0.6 to 3.0 and 39 to 60 mN / m (). Surface tension of 25 ° C), PET plate contact angle of 30 to 65 ° (25 ° C), water contact angle of 0 to 30 ° (25 ° C), and kinematic viscosity of 90 to 500 mm ² / s (40 ° C). We have found an absorbent article characterized by having.

The absorbent article of the present disclosure is excellent in wiping property of highly viscous body fluid adhering to the skin.

Specifically, the present disclosure relates to the following aspects.
[Aspect 1]
An absorbent article comprising a liquid permeable sheet, a liquid impermeable sheet, and an absorber between them.
The absorbent article contains a wiping property improving agent for improving the wiping property of a body fluid or a wiping property improving composition containing the wiping property improving agent.
The above-mentioned wipeability improver
IOB of 0.6-3.0 and
With a surface tension of 39 to 65 mN / m (25 ° C),
PET plate contact angle of 30-65 ° (25 ° C) and
With a water contact angle of 0 to 30 ° (25 ° C),
90-500 mm ² / s (40 ° C) kinematic viscosity and
The absorbent article, characterized in that it has.

(A) Since the wiping property improving agent has a predetermined kinematic viscosity and a predetermined surface tension, the wiping property improving agent is difficult to move before use (for example, during storage) of the absorbent article. When the absorbent article is used, the wiping property improving agent present in the absorbent article is separated from the absorbent article and easily moves to the skin of the wearer of the absorbent article.

(B) Further, since the wiping property improving agent has a predetermined kinematic viscosity and a predetermined PET plate contact angle, the wiping property improving agent transferred to the wearer's skin spreads on the skin and is coated on the skin. Is easy to form.
(C) Further, since the wiping property improving agent has a certain affinity with hydrophobic substances and hydrophilic substances by having a predetermined IOB, it has a high viscosity body fluid (for example, feces, loose stools, menstrual blood). Etc.) and a certain affinity (easiness of familiarity), and the body fluid can be appropriately adapted to the above-mentioned film.

(D) Further, since the wiping property improving agent has a predetermined kinematic viscosity and a water contact angle, it is placed on the skin when the skin is cleaned using a cleaning sheet (for example, a wet wipe). The existing wipe improver can be transferred to the cleaning sheet.
(E) Further, since the wiping property improving agent has a predetermined IOB, a predetermined surface tension, a predetermined PET plate contact angle and a predetermined water contact angle, the wiping property improving agent has been transferred to the cleaning sheet. However, since it is difficult to separate from the cleaning sheet and the wiping property improving agent on the cleaning sheet has a certain affinity with the body fluid, the body fluid can be removed together with the film formed on the skin. ..

(F) Further, since the wiping property improving agent has a predetermined IOB, a predetermined surface tension, a predetermined PET plate contact angle and a predetermined water contact angle, it is difficult for the wiping property improving agent and the body fluid to separate from each other. The cleaning sheet can retain the bodily fluids removed from the skin.
As described above, the wiping property improving agent is excellent in wiping property of body fluid adhering to the skin.

[Aspect 2]
The absorbent article according to embodiment 1, wherein the wiping property improving agent has a water solubility of 100 g (25 ° C.) or more in 100 g of deionized water.

In the absorbent article, since the wiping property improving agent has a predetermined water solubility, the wiping property improving agent remaining on the wearer's skin is easily removed by a new cleaning sheet or the like, and the wearer. It becomes difficult to remain on the skin.

[Aspect 3]
The absorbent article according to aspect 1 or 2, wherein the wipeability improver has an IOB of 0.6 to 2.2.

In the above-mentioned absorbent article, since the wiping property improving agent has a predetermined IOB, the wiping property improving agent does not have an excessively high affinity with a highly hydrophilic body fluid, for example, urine, and is a wiping property improving agent. However, the highly hydrophilic body fluid makes it difficult to flow.

[Aspect 4]
The absorbent article according to any one of aspects 1 to 3, wherein the wiping property improving agent has a weight average molecular weight of 600 to 1,800.

In the absorbent article, since the wiping property improving agent has a predetermined weight average molecular weight, the wearer does not easily feel the stickiness of the wiping property improving agent.

[Aspect 5]
The wiping property improving agent is the following (i) and (ii),
(I) From the carbonyl group (-CO-) and oxy group (-O-) inserted between the (i-1) hydrocarbon moiety and (i-2) the CC single bond of the above hydrocarbon moiety. Compounds having one or more identical or different groups selected from the group consisting of, and (ii) (ii-1) hydrocarbon moieties and (ii-2) CC single bonds of the above hydrocarbon moieties. One or more identical or different groups selected from the group consisting of a carbonyl group (-CO-) and an oxy group (-O-) inserted in between, and (iii-3) the above hydrocarbon moiety. Compounds with one or more identical or different groups, selected from the group consisting of carboxyl groups (-COOH) and hydroxyl groups (-OH) that substitute for hydrogen atoms.
And selected from the group consisting of any combination of them,
Here, in the compounds of (i) and (ii), when two or more oxy groups are inserted, the oxy groups are not adjacent to each other.
The absorbent article according to any one of aspects 1 to 4.

In the absorbent article, since the wiping property improving agent has a predetermined structure, the wiping property improving agent is excellent in wiping property of the body fluid adhering to the skin.

[Aspect 6]
The wiping property improving agent is the following (i') and (ii'),
(I') A carbonyl bond (-CO-) and an ester bond (-COO) inserted between the (i'-1) hydrocarbon moiety and the (i'-2) CC single bond of the above hydrocarbon moiety. Compounds with one or more identical or different bonds selected from the group consisting of-), carbonate bonds (-OCOO-), and ether bonds (-O-), and (ii') (ii'-). 1) A carbonyl bond (-CO-), an ester bond (-COO-), and a carbonate bond (-OCOO-) inserted between the hydrocarbon moiety and the CC single bond of the (ii'-2) hydrocarbon moiety. A carboxyl group (ii'-3) that replaces the hydrogen atom of the hydrocarbon moiety with one or more identical or different bonds selected from the group consisting of-) and ether bonds (-O-). Compounds having one or more identical or different groups, selected from the group consisting of -COOH) and hydroxyl groups (-OH).
And selected from the group consisting of any combination of them,
Here, in the compounds of (i') and (ii'), when two or more identical or different bonds are inserted, the bonds are not adjacent to each other.
The absorbent article according to any one of aspects 1 to 5.

In the absorbent article, since the wiping property improving agent has a predetermined structure, the wiping property improving agent is excellent in wiping property of the body fluid adhering to the skin.

[Aspect 7]
The wiping property improving agent is inserted between the (A) (A1) hydrocarbon moiety and the CC single bond of the hydrocarbon moiety, and is a carbonyl bond (-CO-) or an ester bond (-COO-). , A carboxyl group that replaces the hydrogen atom of the hydrocarbon moiety with one or more identical or different bonds selected from the group consisting of carbonate bonds (-OCOO-), and ether bonds (-O-). An ester or ether of (A2) a polyoxyalkylene glycol and one or more compounds having the same or different groups, selected from the group consisting of —COOH) and hydroxyl groups (—OH). The absorbent article according to any one of 6 to 6.

In the absorbent article, since the wiping property improving agent has a predetermined structure, the wiping property improving agent is excellent in wiping property of the body fluid adhering to the skin.

[Aspect 8]
(A1) A carbonyl bond (-CO-), an ester bond (-COO-), a carbonate bond (-OCOO-), and an ether inserted between the hydrocarbon moiety and the CC single bond of the hydrocarbon moiety. From one or more identical or different bonds selected from the group consisting of bonds (-O-) and carboxyl groups (-COOH) and hydroxyl groups (-OH) that replace the hydrogen atom of the hydrocarbon moiety. A compound having one or more identical or different groups selected from the group consisting of (a1) a saccharide, (a2) a chain hydrocarbon moiety and the hydrogen atom of the chain hydrocarbon moiety is substituted 1. A compound having up to 10 hydroxyl groups, a carboxylic acid or hydroxy acid containing (a3) a chain hydrocarbon moiety and 1 to 6 carboxyl groups that replace the hydrogen atom of the chain hydrocarbon moiety. The absorbent article according to embodiment 7, selected from the group consisting of alkoxy acids or oxo acids, and (a4) any of their ethers or esters.

In the absorbent article, since the wiping property improving agent has a predetermined structure, the wiping property improving agent is excellent in wiping property of the body fluid adhering to the skin.

[Aspect 9]
The absorbent article according to any one of aspects 1 to 8, wherein the wiping property improving agent is a branched polymer.

In the above-mentioned absorbent article, since the wiping property improving agent is a branched polymer, the wiping property improving agent can have a high viscosity at 25 ° C., and the wiping property improving agent moves when stored at room temperature or the like. It's hard to do.

[Aspect 10]
A cleaning sheet containing a wiping property improving agent for improving the wiping property of a body fluid or a wiping property improving composition containing the wiping property improving agent, and a fiber sheet.
The above-mentioned wipeability improver
IOB of 0.6-3.0 and
With a surface tension of 39-60 mN / m (25 ° C),
PET plate contact angle of 30-65 ° (25 ° C) and
With a water contact angle of 0 to 30 ° (25 ° C),
The above-mentioned cleaning sheet, characterized by having.

The cleaning sheet can exert the effects of (e) and (f) in the first aspect.

[Aspect 11]
The cleaning sheet according to aspect 10, wherein the wiping property improving agent further has a kinematic viscosity of 90 to 500 mm ² / s (40 ° C.).

In the cleaning sheet, when the skin is cleaned, the wiping property improving agent can move to the wearer's skin, so that the wiping property improving agent is (b) to (f) in the first aspect. Can exert the effect of.

[Aspect 12]
The use of a wiping property improving agent or a wiping property improving composition containing the above wiping property improving agent in a textile product for improving the wiping property of a body fluid.
The above-mentioned wipeability improver
IOB of 0.6-3.0 and
With a surface tension of 39-60 mN / m (25 ° C),
PET plate contact angle of 30-65 ° (25 ° C) and
With a water contact angle of 0 to 30 ° (25 ° C),
The above-mentioned use characterized by having.

In the above use, the wiping property improving agent and the wiping property improving composition can exhibit the same effect as (e) and (f) in the first aspect.

[Aspect 13]
The use according to aspect 12, wherein the wipeability improver further has a kinematic viscosity of 90 to 500 mm ² / s (40 ° C.).

In the above use, when the skin is cleaned, the wiping property improving agent can move to the wearer's skin, so that the wiping property improving agent has an effect similar to (b) to (f) in the first aspect. Can be demonstrated.

[Aspect 14]
An absorbent article comprising a liquid permeable sheet, a liquid impermeable sheet, and an absorber between them.
The skin contact surface of the absorbent article contains a wiping property improving agent for improving the wiping property of a body fluid or a wiping property improving composition containing the wiping property improving agent.
The above-mentioned wipeability improver
IOB of 0.6-3.0 and
With a surface tension of 39-60 mN / m (25 ° C),
PET plate contact angle of 30-65 ° (25 ° C) and
With a water contact angle of 0 to 30 ° (25 ° C),
90-500 mm ² / s (40 ° C) kinematic viscosity and
Have,
The wipeability improver moves to a cleaning sheet and functions to remove body fluid adhering to the wearer's skin.
The above-mentioned absorbent article.

The absorbent article can exert the same effect as that of the first aspect.

[Aspect 15]
The absorbent article according to aspect 14, wherein the wiping property improving agent functions to prevent body fluid from adhering to the wearer's skin.

The absorbent article can exert the same effect as that of the first aspect.

[Absorbable article]
The absorbent article of the present disclosure includes a liquid permeable sheet, a liquid impermeable sheet, and an absorber between them, and the absorbent article has a wiping property that improves the wiping property of a body fluid. It contains a wiping property improving composition containing an improving agent or a wiping property improving agent.

The wiping property improving agent according to the present disclosure is
(I) IOB of 0.6 to 3.0 and
(Ii) Surface tension of 39 to 60 mN / m (25 ° C) and
(Iii) PET plate contact angle of 30 to 65 ° (25 ° C) and
(Iv) Water contact angle of 0 to 30 ° (25 ° C) and
(V) 90-500 mm ² / s (40 ° C) kinematic viscosity and
Have.

The wipeability improver has an IOB of 0.6 to 3.0. The lower limit of the IOB of the wipeability improver is preferably 0.7, and more preferably 0.8. Further, the upper limit of the IOB of the wiping property improving agent is preferably 2.5, more preferably 2.2, still more preferably 2.0, and even more preferably 1.5. Since the wiping property improving agent has the IOB, the wiping property improving agent has a certain affinity with hydrophobic substances and hydrophilic substances, and has a high viscosity body fluid (for example, feces, loose stool, menstrual blood). Etc.) and a certain affinity (easiness of familiarity), and the body fluid can be appropriately adapted to the above-mentioned film. In addition, the affinity with a highly hydrophilic body fluid, for example, urine does not become too high, and the highly hydrophilic body fluid makes it difficult for the wiping property improving agent to flow.

IOB (Inorganic Organic Balance) is an index showing the balance between hydrophilicity and lipophilicity. In this specification, the following equation by Oda et al .:
IOB = Inorganic value / Means the value calculated by the organic value.

The above-mentioned inorganic value and organic value are referred to as "Prediction of Organic Compounds and Organic Conceptual Diagram" by Akira Fujita, "Chemical Area Vol. 11, No. 10 (1957) p. Based on the organic conceptual diagram described in 719-725).
Table 1 below summarizes the organic and inorganic values of the major groups by Mr. Fujita.

The wipeability improver has a surface tension of 39 to 60 mN / m, preferably 39 to 50 mN / m at 25 ° C. This facilitates the transfer of the wiping improver from the absorbent article to the wearer's skin.
In this specification, the surface tension at 25 ° C. may be expressed in the unit of "mN / m (25 ° C.)".

The surface tension of the wiping property improving agent is measured at 25 ° C. using the Wilhelmy method. For the surface tension, EZ-Pi Plus manufactured by Kibron is used, the moving speed of the probe is set to 0.2 mm / s, and the surface tension 60 seconds after the start of measurement is adopted.
The surface tension is measured 10 times with the same wiping property improving agent, and the average value thereof is adopted.

The wipe improver has a PET plate contact angle of 30-65 °, preferably 30-55 °, more preferably 30-45 °, and even more preferably 30-40 ° at 25 ° C. As a result, the wiping property improving agent spreads on the wearer's skin, and it becomes easy to form a film, and the cleaning sheet or the like makes it easy to peel off the film of the wiping property improving agent.

The contact angle of water with respect to the skin is known to be 82 ° (Journal of the Society of Rheology, 2006, Vol. 34, No. 3, pp. 171-175, "Applicability of skin care products and their rheological characteristics". "). When the contact angle of the deionized water with respect to various resin plates was examined, it was found that the contact angle of the deionized water with the PET plate was 83 °, and the PET plate showed hydrophilicity very close to that of the skin. rice field. Therefore, in the present specification, a PET plate is used to evaluate the wettability to the skin.
In this specification, the PET plate contact angle at 25 ° C. may be expressed in the unit of “° (25 ° C.)”.

The PET plate contact angle is measured as follows.
(1) Prepare an automatic contact angle meter CA-V type (manufactured by Kyowa Interface Science Co., Ltd.) and a plate made of polyethylene terephthalate (hereinafter referred to as "PET plate") in a constant temperature room at 25 ° C. The PET plate is PET-6010 (manufactured by Takiron Co., Ltd., size: 41.5 × 80.0 × 1.0 mm).
(2) Approximately 2 μL of the wiping property improving agent is dropped onto the PET plate using a syringe, and 5 seconds after the dropping, the wiping property improving agent is wiped by the θ / 2 method using an automatic contact angle meter CA-V type. Measure the contact angle of.
(3) The measurement is performed 10 times at different locations on the PET plate, and the average value thereof is adopted as the contact angle.

The wiping property improver has a water contact angle of 0 to 30 °, preferably 0 to 25 °, more preferably 0 to 20 °, and even more preferably 0 to 15 ° at 25 ° C. As a result, the wiping property improving agent transferred to the cleaning sheet becomes difficult to separate from the cleaning sheet, and the wiping property improving agent on the cleaning sheet causes the body fluid to be formed on the skin. It will be easier to remove each.
In this specification, the water contact angle at 25 ° C. may be expressed in the unit of “° (25 ° C.)”.

The water contact angle is measured as follows.
(1) Prepare an automatic contact angle meter CA-V type (manufactured by Kyowa Interface Science Co., Ltd.) and a plate made of polyethylene terephthalate (hereinafter referred to as "PET plate") in a constant temperature room at 25 ° C. The PET plate is PET-6010 (41.5 × 80.0 × 1 mm) manufactured by Takiron Co., Ltd.
(2) A wiping property improving agent is applied to the PET plate at a basis weight of 10 g / m ² . The wipeability improver can be applied to a PET plate, for example, by a bar coater (for example, a stainless steel rod wrapped with a stainless steel wire).

(3) 5 minutes after application of the wiping property improving agent, about 2 μL of deionized water is dropped onto the wiping property improving agent using a syringe, and 5 seconds after the dropping, the automatic contact angle meter CA-V type. Is used to measure the contact angle of deionized water by the θ / 2 method.
(4) The measurement is performed 10 times at different locations of the wiping property improving agent, and the average value thereof is adopted as the contact angle.

The wipeability improver has a kinematic viscosity of 90 to 500 mm ² / s, preferably 150 to 450 mm ² / s, and more preferably 200 to 400 mm ² / s at 40 ° C. As a result, the wiping property improving agent is difficult to move when the absorbent article is stored, and easily moves to the wearer's skin and then to the cleaning sheet when the absorbent article is used.
In this specification, the kinematic viscosity at 40 ° C. may be expressed in units of "mm ² / s (40 ° C.)".

The kinematic viscosity is as follows: a) The larger the molecular weight of the wipeability improver, the more b) the polar group, for example, carbonyl bond (-CO-), ether bond (-O-), carboxyl group (-COOH), hydroxyl group. The higher the ratio of (-OH) and the like, and c) the larger the IOB, the higher the tendency.

The kinematic viscosity is measured at a test temperature of 40 ° C. using a Canon Fenceke backflow viscometer according to "5. Kinematic viscosity test method" of JIS K 2283: 2000.
The kinematic viscosity can be measured at 25 ° C by changing the test temperature to 25 ° C.

The wiping property improving agent has a water solubility of 100 g or more in 100 g of deionized water at 25 ° C., preferably 100 g or more. As a result, the wiping property improving agent remaining on the wearer's skin is easily removed by a new cleaning sheet or the like, and is less likely to remain on the wearer's skin.
In addition, in this specification, the water solubility at 25 degreeC may be expressed in the unit of "g (25 degreeC)".

The water solubility was such that at 25 ° C., a predetermined amount, for example, 100 g of a wiping property improving agent was added to 100 g of deionized water, allowed to stand for 1 minute, stirred lightly as necessary, and then wiped. It can be measured by visually evaluating whether or not the improver has dissolved.
In the present specification, regarding the water solubility, "dissolution" includes the case where the wiping property improving agent is completely dissolved in deionized water to form a homogeneous mixture, and the case where the wiping property improving agent is completely emulsified. Includes cases where In addition, "completely" means that the deionized water does not have a phase of the wiping property improving agent.

The wiping property improver preferably has a weight average molecular weight of 600 to 1,800, more preferably 800 to 1,600, and even more preferably 1,000 to 1,400. As a result, it becomes difficult for the wearer to remember the stickiness of the wiping property improving agent.

In the present specification, the "weight average molecular weight" is a polydisperse compound (for example, an ester produced from a compound produced by sequential polymerization, a plurality of fatty acids, and a plurality of aliphatic monohydric alcohols). , A concept comprising a single compound (eg, an ester produced from one fatty acid and one aliphatic monohydric alcohol), N _i molecules with a molecular weight M _i (i = 1, or i). = 1, 2, ...) In the system consisting of the following equation:
M _w = ΣN _i M _i ² / ΣN _i M _i
Means M _w obtained by.

As used herein, the weight average molecular weight means a polystyrene-equivalent value determined by gel permeation chromatography (GPC).
Examples of the measurement conditions of GPC include the following.
Model: Hitachi High-Technologies Corporation High-speed liquid chromatogram Lachrom Elite
Column: Showa Denko Corporation SHODEX KF-801, KF-803 and KF-804
Eluent: THF
Flow rate: 1.0 mL / min Drive-in amount: 100 μL
Detection: RI (Differential Refractometer)
The weight average molecular weight described in the examples of the present specification is measured under the above conditions.

It is preferable that the vapor pressure of the wiping property improving agent is low. The vapor pressure of the wiping property improving agent is preferably 0 to 200 Pa, more preferably 0 to 100 Pa, further preferably 0 to 10 Pa, and even more preferably 0 to 1 Pa at 25 ° C. (1 atm). Is even more preferred, and 0.0 to 0.1 Pa is even more preferred.

Considering that the absorbent article of the present disclosure is used in contact with the human body, the vapor pressure is preferably 0 to 700 Pa, more preferably 0 to 100 Pa at 40 ° C. (1 atm). It is even more preferably 0 to 10 Pa, even more preferably 0 to 1 Pa, and even more preferably 0.0 to 0.1 Pa. This is because if the vapor pressure of the wiping property improving agent is high, it may vaporize during storage, causing problems such as a decrease in the amount of the vapor pressure and an odor when worn.

The wiping property improving agent is preferably used in the following (i) and (ii),
(I) From the carbonyl group (-CO-) and oxy group (-O-) inserted between the (i-1) hydrocarbon moiety and (i-2) the CC single bond of the above hydrocarbon moiety. Compounds having one or more identical or different groups selected from the group consisting of (hereinafter, may be referred to as "compound (i)"), and (ii) (ii-1) hydrocarbon moieties. (Ii-2) One or more identical, selected from the group consisting of a carbonyl group (-CO-) and an oxy group (-O-) inserted between the CC single bonds of the hydrocarbon moiety. Or different groups and one or more identical or different groups selected from the group consisting of a carboxyl group (-COOH) and a hydroxyl group (-OH) that replace the hydrogen atom of the (ii-3) hydrocarbon moiety. A compound having a group (hereinafter, may be referred to as "compound (ii)"),
Also selected from the group consisting of any combination thereof.

As used herein, the term "hydrocarbon moiety" means a moiety composed of carbon and hydrogen, and is also referred to as a chain hydrocarbon moiety, for example, a paraffinic hydrocarbon moiety (not including double and triple bonds, also referred to as an alkyne. ), Olefin hydrocarbon moieties (containing one double bond, also referred to as alkynes), acetylene hydrocarbon moieties (containing one triple bond, also referred to as alkynes), and double bonds and Hydrocarbon moieties comprising two or more bonds selected from the group consisting of triple bonds, as well as cyclic hydrocarbon moieties such as aromatic hydrocarbon moieties, alicyclic hydrocarbon moieties, and any combination thereof.

The chain hydrocarbons include linear hydrocarbons and branched chain hydrocarbons. Further, the alicyclic hydrocarbon moiety may contain a double bond.
The above-mentioned hydrocarbon portion includes a chain hydrocarbon portion, an alicyclic hydrocarbon portion, and a combination thereof (for example, an alicyclic hydrocarbon portion and a chain hydrocarbon portion linked to the alicyclic hydrocarbon portion. Can be selected from the group consisting of).

When two or more oxy groups (—O—) are inserted in the compound (i) and the compound (ii), the oxy groups (—O—) are not adjacent to each other. Therefore, the compound (i) and the compound (ii) do not contain a compound having a continuous oxy group (so-called peroxide).

When the wiping property improving agent is compound (ii), at least one hydrogen atom in the hydrocarbon moiety is more than a compound in which at least one hydrogen atom in the hydrocarbon moiety is substituted with a carboxyl group (-COOH). However, a compound substituted with a hydroxyl group (-OH) is preferable. This is because the carboxyl group binds to a metal or the like in the body fluid, and the IOB, surface tension, water solubility, etc. of the wiping property improving agent become high, which may exceed a predetermined range.

The wiping property improving agent is more preferably the following (i') and (ii'),
(I') A carbonyl bond (-CO-) and an ester bond (-COO) inserted between the (i'-1) hydrocarbon moiety and the (i'-2) CC single bond of the above hydrocarbon moiety. -), A compound having one or more identical or different bonds selected from the group consisting of a carbonate bond (-OCOO-), and an ether bond (-O-) (hereinafter, "compound (i')". (Ii') and (ii'-1) hydrocarbon moiety and (ii'-2) carbonyl bond (-CO) inserted between the CC single bonds of the above hydrocarbon moiety. One or more identical or different bonds selected from the group consisting of-), ester bonds (-COO-), carbonate bonds (-OCOO-), and ether bonds (-O-), and (iii'-. 3) A compound having one or more identical or different groups selected from the group consisting of a carboxyl group (-COOH) and a hydroxyl group (-OH) that substitutes the hydrogen atom of the above hydrocarbon moiety (hereinafter, Sometimes referred to as "compound (ii')"),
Also selected from the group consisting of any combination thereof.

When two or more identical or different bonds are inserted in the compound (i') and the compound (ii'), that is, a carbonyl bond (-CO-), an ester bond (-COO-), a carbonate bond (-OCOO-). When two or more identical or different bonds selected from-) and ether bonds (-O-) are inserted, the bonds are not adjacent and at least carbon atoms are between the bonds. Intervenes one.

When the wiping property improving agent is a compound (ii'), at least one hydrogen atom in the hydrocarbon moiety is more than a compound in which at least one hydrogen atom in the hydrocarbon moiety is substituted with a carboxyl group (-COOH). A compound in which the atom is substituted with a hydroxyl group (-OH) is preferable. This is because the carboxyl group binds to a metal or the like in the body fluid, and the IOB, surface tension, water solubility, etc. of the wiping property improving agent become high, which may exceed a predetermined range.

The wiping property improving agent is more preferably described in the following (A),
(A) (A1) A carbonyl bond (-CO-), an ester bond (-COO-), and a carbonate bond (-OCOO-) inserted between the hydrocarbon moiety and the CC single bond of the hydrocarbon moiety. , And one or more identical or different bonds selected from the group consisting of ether bonds (-O-) and carboxyl groups (-COOH) and hydroxyl groups (-COOH) that replace the hydrogen atom of the hydrocarbon moiety. An ester or ether of (A2) a polyoxyalkylene glycol and one or more compounds having the same or different groups selected from the group consisting of OH) (hereinafter, may be referred to as "Compound A"). ,
Is.
Hereinafter, compound (A) will be described in detail.

[Compound (A)]
The compound (A) has a carbonyl bond (-CO-), an ester bond (-COO-), and a carbonate bond (-) inserted between the (A1) hydrocarbon moiety and the CC single bond of the hydrocarbon moiety. One or more identical or different bonds selected from the group consisting of OCOO-) and ether bonds (-O-) and carboxyl groups (-COOH) and hydroxyls that replace the hydrogen atom of the hydrocarbon moiety. A compound having one or more identical or different groups selected from the group consisting of a group (-OH) (hereinafter, may be referred to as "compound (A1)") and (A2) polyoxyalkylene glycol. Esters or ethers with.

Compound (A1) has at least one, preferably two or more, and even more preferably three or more groups selected from the group consisting of a carboxyl group (-COOH) and a hydroxyl group (-OH). By increasing the number of the above-mentioned groups possessed by the compound (A1), for example, by having three or more of the above-mentioned groups, the compound (A1) and eventually the compound (A) become a branched polymer, and a wiping property improving agent is preferable. Has temperature-viscous behavior.

Examples of the compound (A1) include (a1) a saccharide, (a2) a compound having a chain hydrocarbon moiety and 1 to 10 hydroxyl groups substituting hydrogen atoms in the chain hydrocarbon moiety, (a3). ) A carboxylic acid, a hydroxy acid, an alkoxy acid or an oxo acid, which comprises a chain hydrocarbon moiety and 1 to 6 carboxyl groups that replace the hydrogen atom of the chain hydrocarbon moiety, and (a4) any of them. Ether or ester of.

Examples of the saccharide (a1) include monosaccharides (eg glucose, galactose, mannose, fructose), disaccharides (eg, sucrose, lactose, maltose, trehalose, turanose, cellobiose) and the like.

(A2) As a compound having a chain hydrocarbon moiety and 1 to 10 hydroxyl groups substituting hydrogen atoms in the chain hydrocarbon moiety (hereinafter, may be referred to as "compound (a2)"). , The following are exemplified.
Decaol chain hydrocarbons, eg alkane decaol, nonaol chain hydrocarbons, eg alkane nononaol, octaol chain hydrocarbons, eg alkane octaol, eg D-erythro-D-galacto-octitol. Chain hydrocarbon heptaol, eg alkane heptaol, eg, boremitol, persetol-chain hydrocarbon hexaol, eg alkane hexaol, eg D-iditol, galactitol (darsitol), D-glucitol (sorbitol), Mannitol-Chain Hydrocarbon Pentaol, eg alkanepentaol, eg D-arabinitol, L-arabinitol, xylitol, rivitol (adnitol)
• Chain hydrocarbon tetraols such as alkanetetraols such as erythritol, D-threitol, L-threitol, pentaerythritol • Chain hydrocarbon triols such as alkanetriols such as glycerol (glycerin)
-Chain hydrocarbon diols such as alcoholic diols such as C ₂ to C ₆ glycols such as ethylene glycol, propylene glycol, butylene glycol, pentylene glycol or hexylene glycol-chain hydrocarbon monools such as Alcan monools, such as alcohols C ₂ to C ₆ , such as ethanol, propanol, butanol, pentanol or hexanol.

The compound (a2) is preferably a compound having a chain hydrocarbon moiety and 3 to 10 hydroxyl groups substituting the hydrogen atom of the chain hydrocarbon moiety. As a result, the wiping property improving agent becomes a branched polymer, the wiping property improving agent can have a high viscosity at 25 ° C., and the wiping property improving agent becomes difficult to move during storage at room temperature or the like.

(A3) A carboxylic acid, a hydroxy acid, an alkoxy acid or an oxo acid containing 1 to 6 carboxyl groups that replace the hydrogen atom of the chain hydrocarbon moiety and the hydrogen atom of the chain hydrocarbon moiety (hereinafter, "compound (hereinafter," compound ". The following may be exemplified as a3) ”.
-Chain hydrocarbon hexacarboxylic acid, for example, alkanehexacarboxylic acid, for example, alkanehexacarboxylic acid of C ₃₀ or less, for example, butane hexaacid, pentane hexaacid, hexane hexaacid, heptane hexaacid, octane hexaacid, nonane. Hexic Acid and Decane Hexic Acid-Chain Hydrocarbon Pentacarboxylic Acids, such as alkampentacarboxylic acids, such as alkampentacarboxylic acids of _C30 or less, such as butane pentaacid, pentane pentaacid, hexane pentacarboxylic acid, heptane pentaacid. , Octane pentaacid, nonane pentaacid and decane pentaacid

-Chain hydrocarbon tetracarboxylic acid, for example, alkanetetracarboxylic acid, for example, alcantetracarboxylic acid of C ₃₀ or less, for example, butane tetraacid, pentane tetraacid, hexane tetraic acid, heptane tetraacid, octane tetraacid, nonane. Tetra acid and decane tetraic acid / chain hydrocarbon tricarboxylic acid, for example, alcantricarboxylic acid, for example, alcantricarboxylic acid of C ₃₀ or less, for example, propane triacid, butane triacid, pentane triacid, hexane triacid, heptane tri. Acids, octane triacids, nonane triacids and decane triacids / chain hydrocarbon dicarboxylic acids such as alkandicarboxylic acids, eg alkandidicarboxylic acids of _C30 or less, such as ethanedioic acid, propanediic acid, butanediic acid. , Pentan diic acid, hexane diic acid, heptane diic acid, octane diic acid, nonane diic acid and decane diic acid / chain hydrocarbon monocarboxylic acid, for example, saturated fatty acid, unsaturated fatty acid.

Examples of the saturated fatty acids include saturated fatty acids of C ₂ to C ₃₀ , such as acetic acid (C ₂ ), propanoic acid (C ₃ ), butanoic acid (C ₄ ) and isomers thereof, for example, 2-methylpropanoic acid. (C ₄ ), pentanoic acid (C ₅ ) and its isomers, such as 2-methylbutanoic acid (C ₅ ), 2,2-dimethylpropanoic acid (C ₅ ), hexanoic acid (C ₆ ), heptanic acid (C). ₇ ), Octanoic acid (C ₈ ) and its isomers, such as 2-ethylhexanoic acid (C ₈ ), nonanoic acid (C ₉ ), decanoic acid (C ₁₀ ), dodecanoic acid (C ₁₂ ), tetradecanoic acid (C 12). C ₁₄ ), hexadecanoic acid (C ₁₆ ), heptadecanoic acid (C ₁₇ ), octadecanoic acid (C ₁₈ ), eicosanoic acid (C ₂₀ ), docosanoic acid (C ₂₂ ), tetracosanoic acid (C ₂₄ ), hexacosanoic acid (C) ₂₆ ), octacosanoic acid (C ₂₈ ), triacanthic acid (C ₃₀ ), etc., as well as these isomers not listed.

Examples of the unsaturated fatty acids include unsaturated fatty acids of C ₃ to C ₂₀ , such as mono-unsaturated fatty acids, such as crotonic acid (C ₄ ), myristoleic acid (C ₁₄ ), and palmitoleic acid (C ₁₆ ). Diunsaturated fatty acids such as oleic acid (C ₁₈ ), ellaic acid (C ₁₈ ), baxenoic acid (C ₁₈ ), gadrain acid (C ₂₀ ), eicosenoic acid (C ₂₀ ), for example, linoleic acid (C ₁₈ ), Tri-unsaturated fatty acids such as eikosazienoic acid (C ₂₀ ), such as linolenic acids, such as α-linolenic acid (C ₁₈ ) and γ-linolenic acid (C ₁₈ ), pinolenic acid (C ₁₈ ), eleostearic acid, For example, α-eleostearic acid (C ₁₈ ) and β-eleostearic acid (C ₁₈ ), mead acid (C ₂₀ ), dihomo-γ-linolenic acid (C ₂₀ ), eikosatrienic acid (C ₂₀ ). Etc., Tetra-unsaturated fatty acids such as stearidonic acid (C ₂₀ ), arachidonic acid ₍ C ₂₀ ), Eikosa tetraenoic acid (C ₂₀ ), etc. Acids (C ₂₀ ) and the like, as well as these partial hydrogen adducts.

The compound (a3) is a carboxylic acid, hydroxy acid, alkoxy acid or oxo acid containing a chain hydrocarbon moiety and 3 to 6 carboxyl groups substituting the hydrogen atom of the chain hydrocarbon moiety. Is preferable. As a result, the wiping property improving agent becomes a branched polymer, the wiping property improving agent can have a high viscosity at 25 ° C., and the wiping property improving agent becomes difficult to move during storage at room temperature or the like.

(A4) As any of those ethers or esters (hereinafter, may be referred to as "compound (a4)"), any ester or ether of the compound (a1) to the compound (a4), for example, the compound (a2). Ethers such as polyalcantriol, such as polyglycerol, such as diglycerol, triglycerol, polyglycol, polyalcandiol, such as polyethylene glycol.

Further, the compound (a3) has a chain hydrocarbon hydroxy acid having 2 to 4 carboxyl groups, for example, malic acid, tartrate acid, citric acid, citric acid and the like, and has a chain having 2 to 4 carboxyl groups. Includes hydrocarbon alkoxy acids, such as O-acetylcitrate, and chain hydrocarbon oxo acids with 2-4 carboxyl groups.

Examples of the compound (A2) include polyoxy C ₂ to C ₆ alkylene glycols. The polyoxy C ₂ to C ₆ alkylene glycol is selected from the group consisting of an oxy C ₂ to C ₆ alkylene skeleton, that is, an oxyethylene skeleton, an oxypropylene skeleton, an oxybutylene skeleton, an oxypentylene skeleton, and an oxyhexylene skeleton. Homopolymer having any one skeleton and having hydroxy groups at both ends, ii) Block copolymer having two or more skeletons selected from the above group and having hydroxy groups at both ends, or iii. ) Means a random copolymer having two or more skeletons selected from the above group and having hydroxy groups at both ends.

The polyoxy C ₂ to C ₆ alkylene glycol has the following formula (1):
HO- (C _m H _2m O) _n -H (1)
(In the formula, m is an integer of 2 to 6)
Represented by.

Specific examples of the compound (A) include the following.
-Uniol HS-1600D, polyoxypropylene sorbit produced by adding 25 mol of propylene oxide to 1 mol of sorbitol manufactured by NOF CORPORATION, weight average molecular weight: about 1,600
-Unilube DGP-700, polyoxypropylene diglyceryl ether produced by adding 9 mol of propylene oxide to 1 mol of diglycerol manufactured by NOF CORPORATION, weight average molecular weight: about 700

-Macbiobride MG-10P, manufactured by NOF CORPORATION Polyoxypropylene methylglucoside produced by adding 10 mol of propylene oxide to 1 mol of glucose, weight average molecular weight: about 770
-Macbiobride MG-20P, manufactured by NOF CORPORATION Polyoxypropylene methylglucoside produced by adding 20 mol of propylene oxide to 1 mol of glucose, weight average molecular weight: about 1350

-McBiobride MG-10E, manufactured by NOF CORPORATION Polyoxyethylene methylglucoside produced by adding 10 mol of ethylene oxide to 1 mol of glucose, weight average molecular weight: about 630
-McBiobride MG-20E, manufactured by NOF CORPORATION Polyoxyethylene methylglucoside produced by adding 20 mol of ethylene oxide to 1 mol of glucose, weight average molecular weight: about 1,070

-Polyoxyethylene polyoxypropylene polyoxybutylene glycerin produced by adding 8 mol of ethylene oxide, 5 mol of propylene oxide, and 3 mol of butylene oxide to 1 mol of glycerin manufactured by Wilbright S-753, Nikko Co., Ltd., weight average. Molecular weight: Approximately 960

In the absorbent articles of the present disclosure, it is preferable that the wiping property improving agent is a branched polymer. The wiping property improving agent can have a high viscosity at 25 ° C., and the wiping property improving agent is difficult to move when stored at room temperature or the like.
The branched polymer preferably has 3 or more branched chains, more preferably 4 or more branched chains, even more preferably 5 or more branched chains, and even more preferably 6 or more branched chains.

[Wipeability improving composition]
The wiping property improving composition contains the above-mentioned wiping property improving agent and at least one other component. The at least one other component is not particularly limited as long as it does not impair the effects of the present disclosure, and examples thereof include those conventionally applied to absorbent articles, particularly topsheets in the art.
Examples of the at least one other component include silicone oil, silicone, and silicone-based resin.
Examples of the at least one other component include antioxidants such as BHT (2,6-di-t-butyl-p-cresol), BHA (butylhydroxyanisole), and propyl gallate. Be done.

Examples of the other component of at least one of the above include vitamins such as natural vitamins or synthetic vitamins. Examples of the vitamins include water-soluble vitamins such as B vitamins, for example, B vitamins ₁ , vitamin B ₂ , vitamin B ₃ , vitamin B ₅ , vitamin B ₆ , vitamin B ₇ , vitamin B ₉ , and vitamin B ₁₂ . Etc., vitamin C can be mentioned.
Examples of the vitamin include fat-soluble vitamins such as vitamin A group, vitamin D group, vitamin E group, and vitamin K group.
The above vitamins also include their derivatives.

Examples of the at least one other component include amino acids such as alanine, arginine, lysine, histidine, proline, hydroxyproline and the like, as well as peptides.

Examples of the at least one other component include zeolites such as natural zeolites such as analcime, chabazite, heulandite, natrolite, stilbite, and stilbite, and synthetic zeolites.
Examples of the at least one other component include cholesterol, hyaluronic acid, lecithin, ceramide and the like.

In addition, examples of the at least one other component include agents, for example, skin astringents, anti-acne agents, anti-wrinkle agents, anti-cellulite agents, whitening agents, antibacterial agents, antifungal agents and the like.
Examples of the skin astringent include oil-soluble skin astringents such as zinc oxide, aluminum sulfate and tannic acid, and examples thereof include oil-soluble polyphenols. Examples of the oil-soluble polyphenol include natural oil-soluble polyphenols such as Oobaku extract, Otogirisou extract, Odorikosou extract, Camomila extract, Gobo extract, Salvia extract, Shinanoki extract, Seiyoubodaiju extract, Shirakaba extract, Sugina extract, Sage extract and Salvia extract. , Teuchigurumi extract, hibiscus extract, biwa leaf extract, bodaiju extract, hop extract, marronnier extract, yokuinin extract and the like.

Examples of the anti-acne agent include salicylic acid, benzoyl peroxide, resorcinol, sulfur, erythromycin, zinc and the like.
Examples of the anti-wrinkle agent include lactic acid, salicylic acid, salicylic acid derivatives, glycolic acid, phytic acid, lipoic acid, and lysophosphatidic acid.

Examples of the anti-cellulite agent include xanthine compounds such as aminophylline, caffeine, theophylline and theobromine.
Examples of the whitening agent include niacinamide, kojic acid, arbutin, glucosamine and derivatives, phytosterol derivatives, ascorbic acid and its derivatives, and quail extracts and placenta extracts.

In addition, examples of the at least one other component include anti-inflammatory components, pH regulators, antibacterial agents, moisturizers, fragrances, pigments, dyes, pigments, plant extracts and the like. Examples of the anti-inflammatory component include naturally occurring anti-inflammatory agents such as button, ogong, otogirisou, chamomile, licorice, momonoha, mugwort, perilla extract, and synthetic anti-inflammatory agents such as allantin and dipotassium glycyrrhizinate. Will be.
Examples of the pH adjuster include those for keeping the skin weakly acidic, such as malic acid, succinic acid, citric acid, tartaric acid, and lactic acid.
Examples of the pigment include titanium oxide.

The wiping property improving composition contains a wiping property improving agent and at least one other component, preferably 50.0 to 99.9% by mass and 0.1 to 50.0% by mass, respectively. Is 60.0 to 99.9% by mass and 0.1 to 40.0% by mass, more preferably 70.0 to 99.9% by mass and 0.1 to 30.0% by mass, and even more preferably 80. 0-99.9% by mass and 0.1 to 20.0% by mass, even more preferably 90.0 to 99.9% by mass and 0.1 to 10.0% by mass, and even more preferably 95.0. Includes up to 99.9% by mass and 0.1 to 5.0% by mass. This is from the viewpoint of the effect of the present disclosure.

The wiping property improving composition may contain a surfactant as long as the effect of the present disclosure is exhibited. More specifically, the wiping property improving composition preferably contains a surfactant, preferably 0.0 to 1.0 g / m ² , more preferably 0.0 to 0.8 g / m ² , and even more preferably 0.0 to 0.8 g / m 2. Included in the range of 0.1-0.5 g / m ² and even more preferably 0.1-0.3 g / m ² basis weight.
When the amount of the surfactant increases, the surface tension, PET contact angle, water contact angle, etc. of the wiping property improving agent deviate from a predetermined range, and the wiping property improving agent tends to be difficult to exert its effect.

The wiping property improving composition preferably does not contain water, but it is permissible to contain water as long as the disclosed effect is exhibited. When the wiping property improving composition contains water, the wiping property improving composition preferably contains water, preferably more than 0.0 g / m ² and 1.0 g / m ² or less, more preferably 0. More than 0 g / m ² and less than 0.8 g / m ² , more preferably 0.1 g / m ² to 0.5 g / m ² , and even more preferably 0.1 g / m ² to 0.3 g / m ² . Includes within the range of basis weight.
Water is preferably less, as it reduces the absorption performance of the absorbent article.

Similar to the wiping property improving agent, the wiping property improving composition is preferably 90 to 500 mm ² / s, more preferably 150 to 450 mm ² / s at 40 ° C. for the entire wiping property improving composition. , And more preferably have a kinematic viscosity of 200-400 mm ² / s. As a result, the wiping property improving composition and, by extension, the wiping property improving agent are difficult to move during storage of the absorbent article, and move to the wearer's skin and then to the cleaning sheet when the absorbent article is used. It will be easier.

The wiping property improving composition, like the wiping property improving agent, has a wiping property improving composition as a whole, preferably 39 to 60 mN / m, and more preferably 39 to 50 mN / m at 25 ° C. Has surface tension. As a result, the wiping property improving composition, and thus the wiping property improving agent, is easily transferred from the absorbent article to the wearer's skin.

Similar to the wiping property improving agent, the wiping property improving composition preferably has a wiping property improving agent at 25 ° C., preferably 30 to 65 °, more preferably 30 to 55 °, still more preferably 30 to 45 °, and even more preferably. It has a PET plate contact angle of 30-40 °. As a result, the wiping property improving composition, and thus the wiping property improving agent, spreads on the wearer's skin and easily forms a film, and the film of the wiping property improving agent is peeled off by a cleaning sheet or the like. It will be easier to do.

Similar to the wiping property improving agent, the wiping property improving composition preferably has 0 to 30 °, more preferably 0 to 25 °, still more preferably 0 to 20 °, and even more preferably 0 to 20 ° at 25 ° C. It has a water contact angle of 0 to 15 °. As a result, the wiping property improving composition transferred to the cleaning sheet, and thus the wiping property improving agent, becomes difficult to separate from the cleaning sheet, and the wiping property improving agent on the cleaning sheet removes the body fluid. , It becomes easy to remove the film formed on the skin.

As the liquid permeable sheet, those usually used in the art can be adopted without particular limitation. For example, a sheet-like material having a structure for allowing liquid to permeate, for example, a perforated film or a woven fabric. , Non-woven fabric and the like. Examples of the fibers constituting the woven fabric and the non-woven fabric include natural fibers and chemical fibers, examples of the natural fibers include cellulose such as crushed pulp and cotton, and examples of the chemical fibers include rayon and fibril rayon. Examples thereof include regenerated cellulose, semi-synthetic cellulose such as acetate and triacetate, thermoplastic hydrophobic chemical fiber, and thermoplastic hydrophobic chemical fiber subjected to hydrophilization treatment.

Examples of the thermoplastic hydrophobic chemical fiber include a single fiber such as polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET), and a fiber made of a graft polymer of PE and PP.
Examples of the above-mentioned non-woven fabric include, for example, air-through non-woven fabric, spunbond non-woven fabric, point-bond non-woven fabric, spunlace non-woven fabric, needle punch non-woven fabric, melt-blown non-woven fabric, and a combination thereof (for example, SMS).

In the absorbent article of the present disclosure, after forming the absorbent article according to a method known in the art, a wiping property improving agent is applied to, for example, a liquid permeable sheet, for example, an excretion port contact area of the liquid permeable sheet. Alternatively, it can be produced by applying a wiping property improving composition.

The wiping property improving agent or the wiping property improving composition can be coated as a coating liquid containing a volatile solvent, for example, an alcohol solvent, an ester solvent, an aromatic solvent, or the like, if desired. When the coating liquid contains a volatile solvent, the viscosity of the coating liquid containing the wiping property improving agent or the wiping property improving composition is lowered, so that the coating is facilitated and heating at the time of coating is not required. The coating process can be simplified.

The method of applying the wiping property improving agent or the wiping property improving composition or the coating liquid containing the same is not particularly limited, and the wiping property improving agent or the wiping property improving composition is not particularly limited. , Or the coating liquid containing the same, and using a coating device such as a non-contact coater, for example, a spiral coater, a curtain coater, a spray coater, a dip coater, etc. An improver, a wipeability improving composition, or a coating liquid containing the same can be applied. As the coating device, a non-contact type coater is preferable from the viewpoint that the droplet-shaped or particulate-shaped modifier is uniformly dispersed throughout and that the material is not damaged.

Further, the wiping property improving agent or the wiping property improving composition, or a coating liquid containing the same, is used as it is when it is a liquid at room temperature, or it is heated to reduce its viscosity, and when it is solid at room temperature. It is heated to liquefy and can be applied from a control seam HMA (Hot Melt Adhesive) gun. By increasing the air pressure of the control seam HMA gun, a fine particle wiping property improving agent or a wiping property improving composition can be applied.
The amount of the wiping property improving agent or the wiping property improving composition applied can be adjusted, for example, by increasing or decreasing the amount applied from the control seam HMA gun.

In the absorbent article of the present disclosure, the wiping property improving agent or the wiping property improving composition can be applied to any place within the range in which the effect of the present disclosure is exhibited, for example, in the thickness direction of the absorbent article. In, the liquid permeable sheet, for example, the skin contact surface of the liquid permeable sheet can be applied.
In the absorbent articles of the present disclosure, the wiping property improving agent or the wiping property improving composition is used in the plane direction of the absorbent article, for example, the entire liquid permeable sheet or the excretion port contact area, specifically. , Can be placed in the anal contact area, vaginal opening contact area, etc.

In the absorbent articles of the present disclosure, the wiping property improving agent or the wiping property improving composition is used, and the basis weight of the wiping property improving agent is preferably 1.0 to 30 g / m ² , more preferably 2.0 to 2. It is included in a range of 20 g / m ² , and more preferably 3.0 to 10 g / m ² . As a result, the wiping property improving agent is less likely to inhibit the transfer of low-viscosity body fluid to the absorber while exerting its function.

In the present specification, the basis weight of the wiping property improving agent contained in the absorbent article is measured as follows.
(1) A sample is obtained by cutting out a measurement range of an absorbent article, for example, a liquid permeable sheet, using a sharp blade, for example, a replacement blade of a cutter so as not to change the thickness thereof.
(2) Measure the area of the sample: SA (m ² ) and the mass: SM ₀ (g).
(3) The sample is stirred in a solvent in which the wiping property improving agent is soluble, for example, ethanol, acetone, etc. for at least 3 minutes, and the wiping property improving agent is dissolved in the solvent.

(4) The sample is filtered on a filter paper whose mass has been measured, and the sample is thoroughly washed with a solvent on the filter paper. The sample on the filter paper is dried in an oven at 60 ° C.
(5) The mass of the filter paper and the sample is measured, and the mass of the filter paper is subtracted from the mass of the filter paper to calculate the mass of the sample after drying: SM ₁ (g).
(6) The basis weight BBS (g / m ² ) of the wiping property improving agent is calculated by the following formula:
BBS (g / m ² ) = [SM ₀ (g) -SM ₁ (g)] / SA (m ² )
Calculated by
In order to reduce the error, a plurality of samples are collected from a plurality of absorbent articles so that the total area of the samples exceeds 100 cm ² , the experiment is repeated a plurality of times, and the average value thereof is adopted.

Examples of the absorbent article of the present disclosure include disposable diapers, urine absorbing pads, disposable shorts, sanitary napkins, panty liners, pet sheets, diaper changing sheets and the like.

[Cleaning sheet]
The cleaning sheet of the present disclosure includes a wiping property improving agent for improving the wiping property of a body fluid or a wiping property improving composition containing the wiping property improving agent, and a fiber sheet.
The wipeability improver for cleaning sheets is
(I) IOB of 0.6 to 3.0 and
(Ii) Surface tension of 39 to 60 mN / m (25 ° C) and
(Iii) PET plate contact angle of 30 to 65 ° (25 ° C) and
(Iv) Water contact angle of 0 to 30 ° (25 ° C) and
Have.

In the wiping property improving agent for the cleaning sheet , the requirements (i) to (iv) have already been explained in the section of "absorbent article", and thus the description thereof is omitted here.
The wipeability improver for the cleaning sheet does not have to have a kinematic viscosity of 90 to 500 mm ² / s (40 ° C) because it is less necessary to move, but it does not have to have a kinematic viscosity of 90 to 500 mm ² / s (40 ° C). It may have kinematic viscosity (° C.). As a result, when the wiping property improving agent is applied to the fiber sheet, the wiping property improving agent is easily transferred from the cleaning sheet to the wearer's skin.

Examples of the fiber sheet include the same as the liquid permeable sheet described in the section of "absorbent article", and are used as wet wipes impregnated with a chemical solution, for example.

[Use of wiping property improving agent or wiping property improving composition]
In the use of the wiping property improving agent or the wiping property improving composition of the present disclosure, the wiping property improving agent is used.
(I) IOB of 0.6 to 3.0 and
(Ii) Surface tension of 39 to 60 mN / m (25 ° C) and
(Iii) PET plate contact angle of 30 to 65 ° (25 ° C) and
(Iv) Water contact angle of 0 to 30 ° (25 ° C) and
Have.

In the wiping property improving agent, the requirements of (i) to (iv) have already been explained in the section of "absorbent article", and therefore the description thereof will be omitted here.
Since the wiping property improving agent has a low need to move, it does not have to have a kinematic viscosity of 90 to 500 mm ² / s (40 ° C), but has a kinematic viscosity of 90 to 500 mm ² / s (40 ° C). May have.

The textile product to which the wiping property improving agent is used is not particularly limited, and examples thereof include the above-mentioned absorbent article and the above -mentioned cleaning sheet .

Hereinafter, the present disclosure will be described with reference to examples, but the present disclosure is not limited to these examples.
[Example 1]
[Evaluation of stool wiping rate and film formation]
Wiping property improving agent No. shown in Table 2. 1 to No. 22 was prepared. Wiping property improving agent No. 1 to No. The details of 22 are as follows, but the wiping property improving agent No. 1 to No. Reference numeral 7 is omitted because it has already been explained in the present specification.
<No. 8>
・ Unior D-1000, manufactured by NOF CORPORATION

Polypropylene glycol, weight average molecular weight: about 1,000
<No. 9>
-Uniol PB-700, polyoxybutylene polyoxypropylene glycol manufactured by NOF CORPORATION, weight average molecular weight: approx. 700
<No. 10>
・ Solbure GS-01
PPG-13-decyltetradeceth-24, weight average molecular weight: approx. 2,160

<No. 11>
-Unilube MS-70K, stearyl ether of polypropylene glycol manufactured by NOF CORPORATION, about 15 repeating units, weight average molecular weight: about 1,140
<No. 12>
-Unisafe PGML, Propylene Glycol Laurate manufactured by NOF CORPORATION, Weight average molecular weight: Approximately 260
<No. 13>
-Compole BL, dodecanoic acid (C ₁₂ ) monoester of butylene glycol manufactured by NOF CORPORATION, weight average molecular weight: about 270

<No. 14>
Panaceto 810S, manufactured by Nichiyu Co., Ltd. C ₈ fatty acid: C ₁₀ fatty acid is contained in a weight ratio of approximately 85:15, a trimester of glycerin and fatty acid, weight average molecular weight: approximately 480.
<No. 15>
-Uniol TG-1000, glyceryl ether of polypropylene glycol manufactured by NOF CORPORATION, about 16 repeating units, weight average molecular weight: about 1,000

<No. 16>
-Unistar H-408BRS, pentaerythritol tetra2-ethylhexanoate manufactured by NOF CORPORATION, weight average molecular weight: about 640
<No. 17>
-Pearl Ream 6, manufactured by Nichiyu Co., Ltd. A branched chain hydrocarbon produced by copolymerizing liquid isoparaffin, isobutene and n-butene, and then adding hydrogen, degree of polymerization: about 5 to about 10, weight average molecular weight. : Approximately 330
<No. 18>
・ Glycerin

<No. 19>
-Uniol SGP-65, glyceryl ether of polypropylene glycol manufactured by NOF CORPORATION, repeating unit of about 8, weight average molecular weight: about 550
<No. 20>
-Acrobute MB-90, PPG-90 butyl ether manufactured by NOF CORPORATION, weight average molecular weight: approx. 5,300

<No. 21>
-Unilube 75DE-2620R, Polyoxyethylene polyoxypropylene glycol manufactured by NOF CORPORATION (240EO.) (60PO.), Weight average molecular weight: Approximately 14,000
<No. 22>
50 parts by mass of Macbiobride MG-10P and 50 parts by mass of stearyl alcohol were mixed to obtain a wiping property improving agent No. It was set to 22.
Stearyl alcohol is listed in Patent Document 3 as a solid fatty alcohol solid at 25 ° C. and a crystallization accelerator C.
Wiping property improving agent No. 1 to No. The characteristics of 22 are shown in Table 2.

[Stool wiping rate]
The stool wiping rate was measured as follows.
(1) In a constant temperature room at 25 ° C, put artificial leather (manufactured by Ideatex Japan, PBZ13001, size: 140 mm x 200 mm) on an acrylic plate (size: 140 mm x 360 mm) in the lateral direction of the acrylic plate and on the artificial leather. Prepare a test plate that is attached so that the sides of the acrylic plate match and the center of the acrylic plate in the longitudinal direction coincides with the center of the artificial leather in the longitudinal direction. Further, as a weight, a stainless steel plate (50 × 80 mm, mass per unit area (cm ² ): 0.74 g) is prepared.

(2) Prepare artificial loose stool and add deionized water to adjust the viscosity to 7,000 mPa · s while measuring the viscosity with a TVB10 type viscometer (manufactured by Toki Sangyo Co., Ltd.) each time.
For artificial loose stool, deionized water: 71.9 parts by mass, sodium chloride: 1.0 part by mass, glycerin: 15.0 parts by mass, CMC sodium: 2.0 parts by mass, Triton X-100: 0.05. It is prepared by mixing parts by mass, Red No. 102: 0.05 parts by mass, and powdered cellulose: 10.0 parts by mass.
(3) On the artificial leather, the wiping property improving agent No. 1 to No. Each of the 22 is coated with a basis weight of 10 g / m ² .

(4) On the artificial leather, 0.5 g of artificial loose stool is placed 50 mm from one edge in the longitudinal direction of the artificial leather and in the center in the lateral direction.
(5) After measuring the initial mass of the wet wipes (manufactured by Unicharm, thick Mooney wipes): m ₀ (g), fold the wet wipes in half and place the wet wipes on the artificial loose stool. Place the wet wipes so that the center of the wet wipe and the artificial loose stool are aligned.
(6) Place the stainless steel plate on the wet wipes so that the center of the stainless steel plate and the center of the wet wipes coincide with each other.

(7) With the stainless steel plate still placed, the wet wipes are moved to the other edge of the artificial leather in the longitudinal direction at a speed of about 400 mm / min.
(8) After the test of wet wipes, the mass: m ₁ (g) was measured, and the stool wiping rate was calculated by the following formula:
Stool wiping rate (mass%) = 100 x (m ₁ -m ₀ ) /0.5
Calculate from.
(9) Wiping property improving agent No. 1 to No. Measurements are made a total of 3 times in each of the 22 and the average value of the total of 3 times is adopted.

[Film formation]
The film forming property was tested as follows.
(1) Wiping property improving agent No. 1 to No. When each of 22 is applied to the skin of the forearm of the subject and spread, the formability of the film is evaluated in the following three stages.
◯: A uniform film is formed.
Δ: A non-uniform film is formed.
X: No film is formed.

Wiping property improving agent No. 1 to No. It can be seen that No. 7 has a high stool wiping rate and is excellent in stool wiping property. In addition, the wiping property improving agent No. Reference numeral 3 is a wiping property improving agent No. 3 containing a solid fatty alcohol solid at 25 ° C. and a stearyl alcohol listed as a crystallization accelerator C. It can be seen that the fecal wiping property is excellent as compared with 22. Wiping property improving agent No. No. 22 did not move much to the wet wipes, and the wipeability improving agent No. 22 on the artificial leather was used. At 22, artificial loose stool remained.

[Example 2]
Commercially available disposable diapers (manufactured by Unicharm Co., Ltd., Moony S size) have a wipeability improver No. 1 to No. Each of the 22 was coated with a basis weight of 10 g / m ² in a range of 150 × 75 mm centering on the anal contact area, and the disposable diaper No. 1 to No. 22 was manufactured.
Disposable diaper No. for 10 volunteer subjects. 1 to No. Have each of the 22 wear and use a wet wipe (Moony wipe thick) when changing disposable diapers to clean the wearer's skin, which is necessary for cleaning. I had them record the number of wet wipes.

As a result, the wiping property improving agent having excellent film-forming property tends to reduce the number of wet wipes used for cleaning the wearer's skin. Further, in disposable diapers containing a wiping property improving agent having excellent film forming property, the higher the fecal wiping rate of the wiping property improving agent, the more the number of wet wipes used to clean the wearer's skin. It tended to decrease.
For example, the number of wet wipes of disposable diapers not coated with the wiping property improving agent was 3.64 sheets / time, but the wiping property improving agent No. Disposable diaper No. 3 including 3. The number of wet wipes used in No. 3 was 2.88 sheets / time.

Claims (17)

An absorbent article comprising a liquid permeable sheet, a liquid impermeable sheet, and an absorber between them.
The absorbent article contains a wiping property improving agent for improving the wiping property of feces or loose stool , or a wiping property improving composition containing the wiping property improving agent.
The wiping property improving agent
IOB of 0.6-3.0 and
With a surface tension of 39-60 mN / m (25 ° C),
PET plate contact angle of 30-65 ° (25 ° C) and
With a water contact angle of 0 to 30 ° (25 ° C),
90-500 mm ² / s (40 ° C) kinematic viscosity and
Have,
The absorbent article is selected from the group consisting of disposable diapers, urine absorbing pads, pet sheets and diaper changing sheets.
The absorbent article. The absorbent article according to claim 1, wherein the wiping property improving agent contains polyoxypropylene methylglucoside, polyoxyethylene methylglucoside, and / or polyoxyethylene polyoxypropylene polyoxybutylene glycerin. The absorbent article according to claim 1 or 2 , wherein the wiping property improving agent has a water solubility of 100 g (25 ° C.) or more in 100 g of deionized water. The absorbent article according to any one of claims 1 to 3, wherein the wipeability improving agent has an IOB of 0.6 to 2.2. The absorbent article according to any one of claims 1 to 4 , wherein the wiping property improving agent has a weight average molecular weight of 600 to 1,800. The wiping property improving agent is the following (i) and (ii),
(I) From the carbonyl group (-CO-) and oxy group (-O-) inserted between the (i-1) hydrocarbon moiety and (i-2) the CC single bond of the hydrocarbon moiety. Compounds having one or more identical or different groups selected from the group consisting of, and (ii) (ii-1) hydrocarbon moieties and (ii-2) CC single bonds of said hydrocarbon moieties. One or more identical or different groups selected from the group consisting of a carbonyl group (-CO-) and an oxy group (-O-) inserted in between, and (iii-3) the hydrocarbon moiety. Compounds with one or more identical or different groups, selected from the group consisting of carboxyl groups (-COOH) and hydroxyl groups (-OH) that substitute for hydrogen atoms.
And selected from the group consisting of any combination of them,
Here, in the compounds of (i) and (ii), when two or more oxy groups are inserted, the oxy groups are not adjacent to each other.
The absorbent article according to any one of claims 1 to 5 . The wiping property improving agent is the following (i') and (ii'),
(I') (i'-1) A carbonyl bond (-CO-) and an ester bond (-COO) inserted between the hydrocarbon moiety and (i'-2) the CC single bond of the hydrocarbon moiety. Compounds with one or more identical or different bonds selected from the group consisting of-), carbonate bonds (-OCOO-), and ether bonds (-O-), and (ii') (ii'-). 1) A carbonyl bond (-CO-), an ester bond (-COO-), and a carbonate bond (-OCOO) inserted between the hydrocarbon moiety and (ii'-2) the CC single bond of the hydrocarbon moiety. A carboxyl group (ii'-3) that replaces the hydrogen atom of the hydrocarbon moiety with one or more identical or different bonds selected from the group consisting of-) and ether bonds (-O-). Compounds having one or more identical or different groups, selected from the group consisting of -COOH) and hydroxyl groups (-OH).
And selected from the group consisting of any combination of them,
Here, in the compounds of (i') and (ii'), when two or more identical or different bonds are inserted, the bonds are not adjacent to each other.
The absorbent article according to any one of claims 1 to 6 . The wiping property improving agent is inserted between the (A) (A1) hydrocarbon moiety and the CC single bond of the hydrocarbon moiety, and is a carbonyl bond (-CO-) or an ester bond (-COO-). , A carboxyl group that replaces the hydrogen atom of the hydrocarbon moiety with one or more identical or different bonds selected from the group consisting of a carbonate bond (-OCOO-), and an ether bond (-O-). -COOH) and (A2) an ester or ether of a compound having the same or different groups selected from the group consisting of a hydroxyl group (-OH) and (A2) polyoxyalkylene glycol. The absorbent article according to any one of 1 to 7 . (A1) A carbonyl bond (-CO-), an ester bond (-COO-), a carbonate bond (-OCOO-), and an ether inserted between the hydrogen moiety and the CC single bond of the hydrogen moiety. From one or more identical or different bonds selected from the group consisting of bonds (-O-) and carboxyl groups (-COOH) and hydroxyl groups (-OH) that replace the hydrogen atom of the hydrogen moiety. A compound having one or more identical or different groups, selected from the group consisting of, replaces (a1) a saccharide, (a2) a chained hydrocarbon moiety and a hydrogen atom of said chained hydrocarbon moiety. A compound having up to 10 hydroxyl groups, a carboxylic acid or hydroxy acid containing (a3) a chain hydrocarbon moiety and 2 to 6 carboxyl groups that replace the hydrogen atom of the chain hydrocarbon moiety. The absorbent article according to claim 8 , which is selected from the group consisting of an alkoxy acid or an oxo acid, and (a4) any ether or ester thereof. The absorbent article according to any one of claims 1 to 9 , wherein the wiping property improving agent is a branched polymer. A cleaning sheet for feces or loose stool, which comprises a wiping property improving agent for improving the wiping property of feces or loose stool or a wiping property improving composition containing the wiping property improving agent, and a fiber sheet. ,
The wiping property improving agent
IOB of 0.6-3.0 and
With a surface tension of 39-60 mN / m (25 ° C),
PET plate contact angle of 30-65 ° (25 ° C) and
With a water contact angle of 0 to 30 ° (25 ° C),
The cleaning sheet, characterized by having. The cleaning sheet according to claim 11 , wherein the wipeability improving agent further has a kinematic viscosity of 90 to 500 mm ² / s (40 ° C.). Use of a wiping property improving agent or a wiping property improving composition containing the wiping property improving agent in a textile product for feces or loose stool for improving the wiping property of feces or loose stool.
The wiping property improving agent
IOB of 0.6-3.0 and
With a surface tension of 39-60 mN / m (25 ° C),
PET plate contact angle of 30-65 ° (25 ° C) and
With a water contact angle of 0 to 30 ° (25 ° C),
The use, characterized in that it has. The use according to claim 13 , wherein the wipeability improver further has a kinematic viscosity of 90 to 500 mm ² / s (40 ° C.). An absorbent article comprising a liquid permeable sheet, a liquid impermeable sheet, and an absorber between them.
The skin contact surface of the absorbent article contains a wiping property improving agent for improving the wiping property of feces or loose stool , or a wiping property improving composition containing the wiping property improving agent.
The wiping property improving agent
IOB of 0.6-3.0 and
With a surface tension of 39-60 mN / m (25 ° C),
PET plate contact angle of 30-65 ° (25 ° C) and
With a water contact angle of 0 to 30 ° (25 ° C),
90-500 mm ² / s (40 ° C) kinematic viscosity and
Have,
The wiping improver moves to a cleaning sheet and functions to remove feces or loose stools adhering to the wearer's skin.
The absorbent article is selected from the group consisting of disposable diapers, urine absorbing pads, pet sheets and diaper changing sheets.
The absorbent article. The absorbent article according to claim 15, wherein the wiping property improving agent contains polyoxypropylene methylglucoside, polyoxyethylene methylglucoside, and / or polyoxyethylene polyoxypropylene polyoxybutylene glycerin. The absorbent article according to claim 15 or 16 , wherein the wiping property improving agent functions to prevent feces or loose stool from adhering to the wearer's skin.