WO1999018279A1

WO1999018279A1 - Water permeability improver, and fibers and nonwoven fabrics made by using the same

Info

Publication number: WO1999018279A1
Application number: PCT/JP1998/004481
Authority: WO
Inventors: Kazuhide Takahashi; Yoshiaki Ioka; Haruhiko Komeda; Setsuo Kita; Teruo Higashiguti
Original assignee: Matsumoto Yushi-Seiyaku Co., Ltd.
Priority date: 1997-10-03
Filing date: 1998-10-05
Publication date: 1999-04-15
Also published as: JP4124569B2; AU9283698A

Abstract

A water permeability improver for textile materials which comprises at least one member selected from among (a) esters of alkoxylated ricinoleic compounds and/or hydrogenated derivatives thereof with dicarboxylic acids and (b) mixtures of trialkylglycine derivatives with 10 to 80 % of the component (a), and, if necessary, a nonionic, cationic, anionic or amphoteric surfactant; heat-fusible fibers made by using the improver; and nonwoven fabrics made by using the fibers. The improver can give fibers which can pass through a high-speed card without any trouble and have the properties that when the surfaces of the fibers are wetted with the body fluid, the fluid can immediately permeate the surfaces to thereby recover the dry-touch surfaces and that the body fluid permeability of the fibers is not lowered even when the surfaces thereof are wetted with the body fluid repeatedly. The fibers made by using the improver are high-endurance hydrophilic ones which are reduced in slipperiness and can form fibrous laminates, such as nonwoven fabrics, free from lowering in the strengths. The fibers are also useful for the production of clothlike materials and moldings.

Description

Specification

Water permeability imparting agent and its fiber and nonwoven fabric

The present invention relates to a water-permeability-imparting agent and a heat-fusible fiber for textile products, which can be imparted to heat-fusible fibers for transporting bodily fluids such as synthetic napkins and disposable diapers to improve their spinnability and hydrophilicity. The present invention relates to a water-permeable fiber and a non-woven fabric formed of:

The surface layer of the napkin is made of various non-woven fabrics mainly made of polyester fibers including highly hydrophobic and triacetate fibers. It is becoming an improved and much closer to the target required for napkins. In the case of web production, there has been remarkable progress in recent years in production equipment typified by a wet method based on a papermaking method using a water flow, a dry method using an air flow or a carding machine, etc. It has become possible to produce high quality webs at high speeds: these webs are bonded together by spraying or dipping the web in aqueous chemical adhesives or by using low melting thermoplastics. Bonding the whole or part of the web by heating and melting the molecules on the web surface, or forming a web of fibrous low melting point thermoplastic polymer, so-called "heat-fused fiber", and bonding it by thermocompression bonding Various technological innovations have been made, including the use of heat-fused polyester fibers, in which case, even if any of the fibers is used as the main material, the permeability of the fibers at the cardboard level is poor. or, The hydrophilicity of the woven fabric is extremely reduced.- This is because the surface of the fiber changes during thermocompression bonding, and the core of the fiber is partially exposed for bi-component fibers. Disturbance or increased friction between the fiber and the card, which makes it easier for static electricity to be generated in the force window: Nonwovens are very hydrophobic and impermeable to water: it takes a very long time to penetrate water. On the other hand, if the surface of this fiber or the surface of the nonwoven fabric is made hydrophilic, it becomes very easy to get wet with water, and even a small water droplet can quickly wipe the nonwoven fabric surface It is like passing through. By such hydrophilicity, the nonwoven fabric satisfies the first factor as a body fluid transportable fiber. That is, the surface of the nonwoven fabric once wet with the liquid can immediately recover the original dry touch of the nonwoven fabric. Japanese Patent Application Laid-Open No. 54-15872 discloses a similar method for hydrophilizing a porous film-like material comprising a sulfate ester group, a phosphate ester group and a sulfonate group and made of polypropylene. Japanese Patent Application Laid-Open No. 59-51049 discloses a method for coating a hydrophobic plastic containing micropores with a monoester of a fatty acid of sorbitan. Japanese Patent Publication No. 68 proposes a treatment with a boro- oxyalkylene-d-alkyl avi-ethyl etherified polyester ester. JP-A-63-3030184, JP-A-1-148897, JP-A-114880, JP-A-2-169977, Japanese Unexamined Patent Publication No. 3-59169 proposes a method using water-soluble silicon as an essential component.

Japanese Patent Application Publication No. Hei 9-15038028 proposes that an ester of polyethylene glycol is added to a polyolefin resin fiber.

However, when the former is applied to the surface of the nonwoven fabric according to the present invention, once water passes through, it takes a long time for the water to permeate greatly and become dry after being dried. When the latter is applied to the surface of the nonwoven fabric according to the present invention, the friction of the nonwoven fabric increases, so that the amount of wrapped fibers in the nonwoven fabric manufacturing process increases and the nonwoven fabric cannot be produced. : Japanese Patent Application Laid-Open No. 61-151592 discloses a method for hydrophilizing fibers without impairing the heat fusibility of the fibers, since polyether-modified aminopolysiloxane is used as a method for hydrophilizing the fibers. As in the case of conductive silicon, fiber friction is reduced and the web strength is reduced. There is a problem that the fibers constituting the fiber laminate such as nonwoven fabric are slipping and the fiber laminate such as nonwoven fabric is insufficiently strong. , 045, 3877, Alkoki It has been proposed to apply silylated ricinolein and water-soluble silicon to the web, but this will reduce the adhesiveness of the fibers and the durability of the nonwoven fabric will be poor.

An object of the present invention is to pass a high-speed card without any problems as described above without any problem, and even if the surface is once wet with a bodily fluid, the bodily fluid immediately passes through the surface, restores to the surface of the driver's touch, and reappears. Can impair body fluid permeability even if the surface becomes wet. It is an object of the present invention to provide a durable hydrophilic fiber which does not lower the strength of a fiber laminate such as a nonwoven fabric by reducing the slip of the treating agent and the fiber, and a cloth and a molded article using the same. Disclosure of the invention

That is, the water-permeability imparting agent for textile products of the present invention is

a) Esters of alkoxylated ricinolein type compounds and / or hydrogenated products thereof with dicarboxylic acids

b) Trialkylglycine derivative containing 10 to 80% of the above a)

It is characterized by containing at least one of the following, and it can be used in combination with a nonionic surfactant, a cationic surfactant, an anionic surfactant and an amphoteric surfactant. .

The heat-fused fiber of the present invention is characterized by having these water-permeability-imparting agents added thereto, and the nonwoven fabric of the present invention is characterized by containing the heat-fused fiber. BEST MODE FOR CARRYING OUT THE INVENTION

The alkoxylated ricinolein type compound of the present invention and / or the hydrogenated product thereof is an alkylene oxide adduct of an ester composed of a polyhydric alcohol and a hydroxymonocarboxylic acid. Glycerin is preferred, and at least one of these can be used. Examples of hydroxymonocarboxylic acid include glycerin, and glycerin, sorbitan, trimethylol brohan, and the like. Examples include cholic acid, lactic acid, ricinoleic acid, 12-hydroxystearic acid, and salicylic acid, and preferred are ricinoleic acid and 12-hydroxylostearic acid. And can also use one type.

Examples of the alkylene oxide include alkylene oxides having 2 to 4 carbon atoms such as ethylene oxide, propylene oxide, and butylene oxide, and at least one of these can be used: The number of moles of alkylene oxide added is hydroxyl of ester consisting of polyhydric alcohol and hydroxymonocarboxylic acid. It is generally 0 to 80, preferably 5 to 30, per group, and usually 5 to 150, preferably 10 to 80 per mole of the ester.

Echirenokishi de addition mole ^_0/0 Of § zone gravel Ren O sulfoxide addition mole number 5 0 mole ⁰ / o, preferably at least 8 0 mole ⁰ /. That is all. This alkylene oxide adduct of an ester comprising a polyhydric alcohol and a hydroxy-P-hydroxymonocarboxylic acid is obtained by esterifying a polyhydric alcohol with a hydroxy-monocarboxylic acid under ordinary conditions, followed by an addition reaction of the alkylene oxide. Can be produced by:

Examples of dicarboxylic acids include oxydibrobionic acid, dipropionic acid, succinic acid, maleic acid, sebacic acid, and phthalic acid, and at least one of these can be used: Oleic acid, stearic acid, behenic acid, benzoic acid and the like may be contained in an amount of 20% or less, preferably 10% or less. The reaction molar ratio of the alkylene oxide adduct of an ester composed of a polyhydric alcohol and a hydroxymonocarboxylic acid to a dicarboxylic acid is usually 1.0: 1.0 to 2.0: 1.0, preferably 1.5: 1.0. 1.0 to 2.0: 1.0: The reaction of esterification can be carried out under ordinary conditions. The obtained compound has various viscosities depending on the difference of the constituent components, but is usually 300 cst or more at 50 ° C, preferably 800 to 300 cst, and 300 cst. If less than cst, the durable hydrophilicity is not sufficient, and if it exceeds 300 cst, the emulsification is insufficient.

The trialkylglycine derivative used in combination with the water-permeability imparting agent for textile products of the present invention is a quaternary ammonium in which three alkyl groups are bonded to a nitrogen atom in the glycine molecular structure and an inner salt of a carboxyl group. It is a compound having a so-called betaine structure. The alkyl group can be arbitrarily selected from those having a single prime number of 1 to 22. Specific examples of the trialkylglycine derivatives include intramolecular salts such as dimethyldodecylglycine hydroxide, dimethyltetradecylglycine hydrochloride, dimethyloctadecylglycine hydroxide, and heptadecylimidazolide hydroxide. Of these, preferred are two alkyl groups having lower alkyl groups such as methyl and ethyl and one having a long-chain alkyl group having 12 or more carbon atoms. In particular, heptadecylylmidazolymdroxyshethylglycine hydroxide,] 3 Xyoctadecyl dimethyldaricin hydroxide is preferred.

The water-permeability-imparting agent for textile products of the present invention may further include an antistatic agent such as dioxyethylene decyl phosphate sodium salt or alkane sulfonate sodium salt, or an amphoteric N-alkyl sulfo, if desired. An oil lubricant such as viridone nonionic emulsifier or carnaubax water-soluble silicone may be added. The water-permeability-imparting agent for textile products of the present invention includes hydrophobic fibers or textiles composed of hydrophobic fibers, fibrillated polyolefin fibers, core-in-sheath polyesters 'polyethylene-based, polyesters' polypropylene-based, Po triethylene. poly Pro pin interconnection, Kopopuro pyrene 'poly pro pyrene, copolyester Helsingborg blow Ville emission system, copolyester polyester applied to Rukoto preferably _c in heat-fusible fibers such as composite fibers

The water-imparting agent for textile products of the present invention can adhere the water-imparting agent for textile products of the present invention to fibers by emulsion or straight: in the case of emulsion, 5 to 3 in water. Diluted to 0% by weight, and in the case of straight lubrication, diluted to 5 to 30% by weight to a low viscosity hydrocarbon compound to adhere the following amount or knead with the polymer during fiber production. Refueling can be done by roller or nozzle.

The water-permeability-imparting agent for textile products of the present invention is applied, for example, in an amount of from 0.01 to 2.0% by weight, preferably from 0.3 to 0.7% by weight, based on the heat-fusible fiber. If it is less than 1% by weight, water permeability and durability are insufficient, and if the amount exceeds 2.0% by weight, winding becomes large when carding fibers, resulting in a significant decrease in productivity or non-woven fabric. It is not preferable because stickiness increases after permeation of textiles such as cloth:

When kneading, 2 to 30% by weight, preferably 3 to 15% by weight is kneaded: If the amount to be kneaded is less than 2% by weight, water permeability is insufficient and 30% by weight. /. Exceeding this is not preferable because the fiber strength is reduced and the productivity is greatly reduced.

The water-permeability-imparting agent for textile products of the present invention uses not only polyolefin fibers and fibrillated polyolefin fibers as heat-fusible fibers, but also low-melting polyester fibers, nylon fibers, and PVC fibers. Can be used: Non-woven fabrics such as shambond, spunlace and menoleto blow can be used. In addition, For textile products, heat-bondable fibers themselves and heat-bondable fibers are mixed with rayon, polyester fibers, and polyolefin fibers as well as clothing products such as underwear, which is the final product formed from fibers. It shall include the web and nonwoven fabric to be formed. By applying the water permeation imparting agent for textile products of the present invention, the durability against repeated water permeation can be significantly improved, and at the same time, the entanglement and force of the heat fusible fiber and the web can be improved. The generation of static electricity and winding at the time of dwelling can be prevented, and productivity can be remarkably improved.

Therefore, by applying the water-permeability-imparting agent of the present invention to fibers and textile products / nonwoven fabric, the hydrophilicity of the fibers is improved, the body fluid permeability is improved, and the dry touch is always maintained. Further, when the water-permeability-imparting agent according to the present invention is applied to fibers, fiber products, and nonwoven fabrics, their antistatic properties and lubricity are improved, so that the fiber opening properties are improved and the card permeability is further improved. Can be done.

(Example)

Hereinafter, the present invention will be described by way of examples, but the present invention is not limited thereto.

• Example 1

100 parts by weight of propylene fiber, 100 parts by weight of voroxetylene (n = 30) ester of hydrogenated sesame oil and maleic acid (2.0: 1.0 mol) 40 parts by weight, dimethyl pyroctadecylglycol A treatment agent prepared by mixing 30 parts by weight of synhydroxide, 30 parts by weight of dioxetylene dodecyl phosphate sodium salt and 900 parts by weight of water was lubricated to 5 parts by weight (based on fiber weight:... or less O W F says:. a solids 0 5 wt%) _c dried imparted

Next, this was passed through blended cotton and carding processes to produce a web having a basis weight of S O g Z m ^ ".

• Examples 2 to 6, Comparative Examples 1 and 2

A treating agent having the composition shown in Table 1 was prepared, and a web was prepared in the same manner as in Example 1. In the carding process, the amount of generated static electricity, the winding state, and the webbing were obtained at 20 ° C and 40% RH. Process passability was determined based on the state

Each ranking was performed as follows, and the examples and comparative examples described later are shown in Tables 1 to 4. The results are summarized in 3.

Card passability: After carding 40 g of the sample single fiber with a card tester at a relative humidity of 80% and a temperature of 30 ° C, observe the cylinder and evaluate according to the following criteria.

5: No winding, 4: 1/10 on one side of cylinder, 3: 1Z on one side of cylinder, 5: 2 Z: One side of cylinder: 1 Z 3 … With a wrap around

Antistatic property: Using a card tester, at a relative humidity of 45% and a temperature of 20 ° C, a sample of 4 Og was used as a web, and the voltage of the static electricity generated on the web was measured. Value. If it is less than 100 V, it can be put to practical use.

Less than 50 ν, 4'0.5 to 1.0 KV, 3 ■ 1.0 to 0.5 KV, 21.5 to 2.0 KV, 1 · Greater than 2.0 KV:

Initial hydrophilicity of non-woven fabric: A non-woven fabric with a basis weight of 30 gZm is laid on filter paper (Toyo Filter Paper, No. 5), and one drop (about 0.00) from a burette set at a height of 10 mm from the surface of the non-woven fabric. 5 ml) of water is dropped, and the time until the water droplet disappears from the surface of the nonwoven fabric is measured.

Perform this measurement at 20 locations on the nonwoven fabric surface and indicate the number of times less than 10 seconds. If the number is 18 or more, the initial hydrophilicity is good.

Durability and hydrophilicity of non-woven fabric: The above non-woven fabric (10 cm x 10 cm) is placed on a commercial disposable diaper, a cylinder with an inner diameter of 60 mm is placed on top of it, and 65 m 1 of water is injected into the cylinder. Then let the disposable diapers absorb through the nonwoven fabric.

After leaving for 3 minutes after water injection, the nonwoven fabric is sandwiched between two pieces of filter paper (Toyo Filter Paper, No. 5), and a plate (10 cm XIO cm) and a weight (3.5 kg in total) are put on it. And let it dry for 3 minutes, then air-dry for another 5 minutes: At the point where water has passed through the above-mentioned cylinder of the air-dried nonwoven fabric, the test method for the initial hydrophilicity of the nonwoven fabric is Measure the disappearance time at 20 points and indicate the number of times less than 10 seconds: If this number is 18 or more, the durability and hydrophilicity are good: Repeat the same operation for the nonwoven fabric subjected to the test. Do it.

• Examples 7 to 16, Comparative Example 3 Test No. Implementation Implementation Implementation Comparison Comparison Implementation Implementation Implementation Implementation Implementation Implementation

Example 1 Example 2 Example 3 Italy Ji Example 2 Example 4 Example 5 Example 6 Example 7 Example 8 Example 9 Example 10 Example 11

Dimethyloctadecylglycine hydro 30 20 30 30 30 30 30 30 30 30

Kisaid

Hebutadecylui midazorimudoki 40

Siglycin hydroxide

Octyl phosphate potassium salt 50 30 30 20

Decyl phosphate ester salt 40 30 40

Dodecyl phosphate ester salt 50 60 20

Dioxhetyleneoctyl phosphate Este 40

Sodium salt

Dioxetylene cetyl stearyl 20

Sulfuric acid ester sodium salt 00 Dioxetylene dodecyl phosphate ester 30

Lunatrium salt

Ingredient a 40 20 30 30 30

Component b 30 20 30 20

Component c 30 20 10

Al sulfonate sodium salt 40 40 40 30

Polyoxyethylene (30) hemp oil 30

Polyether modified silicone 20

Ingredient a: Ester of boroxyethylene (30) hydrogenated sesame oil and maleic acid (2: 1 mol)

Ingredient b: ester of boroxyethylene (80) hydrogenated sesame oil and maleic acid (1.5: 1 mol)

Component c: Polyoxyethylene (30) ester of hemp oil and phthalic acid (2: 1 mol)

Card permeability Nonwoven fabric performance Durable hydrophilicity

Test No. Initial hydrophilicity

Winding Antistatic 1st 2nd 3rd 4th 5th Example 1 5 5 to 4 2 0 2 0 2 0 1 8 1 0-Example 2 5 5 2 0 2 0 2 0 1 8 1 0 1

Example 3 5 5 2 0 2 0 2 0 1 8 1 0 1 Comparative Example 1 5 5 2 0 1 8 5

One

Comparative Example 2 5 5 2 0 1 5 3

Example 4 5 5 2 0 2 0 2 0 1 5 1 0 1

CD

Example 5 5 5 2 0 2 0 2 0 1 8 1 0 1

Example 6 5 5 2 0 2 0 2 0 1 7 1 0 1

Example 7 5 5 2 0 2 0 2 0 1 8 1 0 1

Example 8 5 5 2 0 2 0 2 0 1 8 1 0 1

Example 9 5 5 2 0 2 0 2 0 1 8 1 0 1

Example 10 5 5 2 0 2 0 2 0 1 8 1 0 1

Example 1 1 5 5 2 0 2 0 2 0 1 8 1 0 1

"I do not evaluate J mark _c

≠ 2 Durability and hydrophilicity of nonwoven fabric (repeated water permeability) Test No. Treatment agent 1 time 2 times 3 times 4 times 5 times

Example 12 Component a 2 0 2 0 1 5 1 0-

Example 13 Component b 2 0 2 0 1 5 1 0 ―

Example 14 Component c 2 0 2 0 1 5 1 0 1

Example 15 Component a + Dimethyloctadecylglycine

Hydroxide (50: 50% by weight)

1 Example 1 6-component a + dimethyloctadecylglycine

Hydroxide (10: 90% by weight)

Comparative Example 3 Dimethyloctadecylglycine hydroxy 1 5 3

Side (Ingredient 1)

03 Industrial applicability

As described above, since the treating agent according to the present invention has good antistatic properties, it also has the effect of reducing static electricity troubles at low humidity. Also, since the lubricating property is good, the card passing property can be improved.

Also, if the treatment agent according to the present invention is applied to a polypropylene fiber or the like and a non-woven fabric by means such as mist or the like, the fiber is rendered hydrophilic and the hydrophilicity is durable. The durability of all dry touches can be improved. Therefore, the use of the treating agent according to the present invention can improve process passability and productivity for producing a fiber web while applying dry touch as a body fluid transport fiber. It has the effect of.

Claims

The scope of the claims

1.a) an ester of an alkoxylated ricinolein type compound or its hydrogenated product with a dicarboxylic acid,

b) a trialkylglycine derivative containing 10 to 80% of the above a),

Water-imparting agent for textile products, containing at least one of

2. A nonionic surfactant, a cationic surfactant, an anionic surfactant, and an amphoteric surfactant are used in combination with the water-permeability-imparting agent according to claim 1. Water permeability imparting agent for textile products.

3. A heat-fusible fiber characterized by imparting the water-permeability-imparting agent according to claim 1 or 2.

4. A non-woven fabric comprising the heat-fusible fiber according to claim 3.