WO2020085299A1 - Adhésif thermofusible - Google Patents

Adhésif thermofusible Download PDF

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Publication number
WO2020085299A1
WO2020085299A1 PCT/JP2019/041301 JP2019041301W WO2020085299A1 WO 2020085299 A1 WO2020085299 A1 WO 2020085299A1 JP 2019041301 W JP2019041301 W JP 2019041301W WO 2020085299 A1 WO2020085299 A1 WO 2020085299A1
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Prior art keywords
component
mass
melt adhesive
hot melt
less
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PCT/JP2019/041301
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English (en)
Japanese (ja)
Inventor
望 藤井
金丸　正実
麻未 古賀
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出光興産株式会社
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Publication of WO2020085299A1 publication Critical patent/WO2020085299A1/fr

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
    • C09J123/10—Homopolymers or copolymers of propene
    • C09J123/12—Polypropene
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
    • C09J153/02—Vinyl aromatic monomers and conjugated dienes

Definitions

  • the present invention relates to a hot melt adhesive and a disposable product using the same.
  • Hot melt adhesives are adhesives that contain relatively little volatile gas, and are used in daily applications such as disposable diapers and in industrial applications such as automobiles.
  • a hot melt adhesive is a composition containing a base polymer, a tackifying resin, a plasticizer and the like as components. By adjusting the type and proportion of each component, the fluidity at the time of coating, the adhesive force, the open time, the set time, etc. are controlled according to the application and the adherend.
  • the base polymer include ethylene-based copolymers, thermoplastic block copolymers typified by styrene-based copolymers, polyolefin resins, polyamide resins, polyester resins, and the like, which are appropriately selected depending on the application and the like. It
  • Patent Document 1 discloses a hot melt adhesive containing a thermoplastic block copolymer as a base polymer, which is suitable for applications such as disposable diapers.
  • a hot melt adhesive having a different composition depending on the type of substrate to be adhered, the site of the product, and the like.
  • a hot-melt adhesive having high adhesive strength is used in a portion called a leg cuff so as to withstand deformation caused by a large mechanical load. Since high adhesive strength and tack are required to achieve high adhesive strength, a synthetic rubber hot melt adhesive containing a large amount of tackifying resin is selected.
  • a hot-melt adhesive when such a hot-melt adhesive is applied to a substrate (for example, a non-woven fabric), the hot-melt adhesive permeates (bleeds through) the non-woven fabric layer, causing a problem that it feels sticky when touched from the outside. Was found. Therefore, an object of the present invention is to provide a hot-melt adhesive agent having reduced stickiness while realizing high adhesive strength.
  • the following components (A), (B) and (C) are included, and the content of the component (C) is 50% by mass or more and 80% by mass with respect to 100% by mass of the hot melt adhesive.
  • a hot melt adhesive with reduced stickiness while realizing high adhesive strength.
  • a hot-melt adhesive with reduced stickiness even if the hot-melt adhesive permeates, the stickiness of the hot-melt adhesive itself permeated is reduced, so that The stickiness of the spots that have penetrated is also reduced. Therefore, it is possible to eliminate or reduce the practical inconvenience and discomfort caused by the stickiness of the hot melt adhesive that has permeated.
  • a hot melt adhesive includes the following components (A), (B) and (C).
  • the content of the component (C) in 100% by mass of the hot melt adhesive is 50% by mass or more and 80% by mass or less.
  • the content of the component (C) is preferably 52% by mass or more, more preferably 55% by mass or more, further preferably 57% by mass or more, and the upper limit is not particularly limited, but preferably 75% by mass or less, It is more preferably 70% by mass or less, still more preferably 65% by mass or less.
  • the content rate of the component (B) in the total amount of the component (A) and the component (B) of 100% by mass is 0.5% by mass or more and 70% by mass or less.
  • the content of the component (B) is preferably 1% by mass or more, more preferably 3% by mass or more, further preferably 5% by mass or more, and preferably 65% by mass or less, more preferably 60% by mass or less. , And more preferably 55% by mass or less. If it is less than 0.5% by mass, tack cannot be reduced and stickiness may not be suppressed. On the other hand, if it exceeds 70% by mass, the stickiness is suppressed, but the tack is excessively reduced, and the physical strength of the bonded substrate may not be maintained.
  • each component will be described.
  • thermoplastic block copolymer of the component (A) is a copolymer of a vinyl aromatic hydrocarbon and a conjugated diene compound.
  • the "vinyl-based aromatic hydrocarbon” is an aromatic hydrocarbon compound having a vinyl group. Examples thereof include styrene, o-methylstyrene, p-methylstyrene, p-tert-butylstyrene, 1,3-dimethylstyrene, ⁇ -methylstyrene, vinylnaphthalene and vinylanthracene. Of these, styrene is preferable.
  • These vinyl aromatic hydrocarbons can be used alone or in combination.
  • a conjugated diene compound is a diolefin compound having at least one pair of conjugated double bonds. Examples thereof include 1,3-butadiene, 2-methyl-1,3-butadiene (or isoprene), 2,3-dimethyl-1,3-butadiene, 1,3-pentadiene and 1,3-hexadiene. Of these, 1,3-butadiene and 2-methyl-1,3-butadiene are preferable. These conjugated diene compounds can be used alone or in combination.
  • the component (A) may be an unhydrogenated product or a hydrogenated product.
  • the unhydrogenated product include those in which the block based on the conjugated diene compound is not hydrogenated.
  • the hydrogenated product may be, for example, a block copolymer in which all or some of the blocks based on the conjugated diene compound are hydrogenated.
  • Examples of the component (A) include styrene-isoprene-styrene block copolymer (SIS) and styrene-butadiene-styrene block copolymer (SBS).
  • Examples of the hydrogenated product include hydrogenated styrene-isoprene block copolymer (SEPS) and hydrogenated styrene-butadiene block copolymer (styrene-ethylene-butadiene-styrene block copolymer, SEBS).
  • SEPS hydrogenated styrene-isoprene block copolymer
  • SEBS hydrogenated styrene-butadiene block copolymer
  • a commercially available product can be used as the component (A).
  • the blending amount of the component (A) is 30% by mass or more and 99.5% by mass or less based on 100% by mass of the total amount of the components (A) and (B).
  • the content of the component (A) with respect to 100% by mass of the hot melt adhesive is preferably 5% by mass or more and 30% by mass or less. More preferably, the content of the component (A) is 7% by mass or more and 25% by mass or less, and even more preferably 8% by mass or more and 20% by mass or less.
  • ⁇ Component (B) The propylene-based polymer which is the component (B) is melted by using a differential scanning calorimeter (DSC) and holding it at ⁇ 10 ° C. for 5 minutes in a nitrogen atmosphere and then raising the temperature at 10 ° C./minute. No endothermic peak is observed or the melting endotherm ( ⁇ HD) obtained from the melting endothermic curve measured under the same conditions is 0 J / g or more and 80 J / g or less. If the melting endotherm is less than 0 J / g, it may not be possible to suppress the occurrence of bleed-out of the low molecular weight component in the hot melt adhesive containing the tackifier, and if it exceeds 80 J / g.
  • DSC differential scanning calorimeter
  • the melting endotherm is preferably 20 J / g or more, more preferably 25 J / g or more, still more preferably 27 J / g or more, still more preferably 30 J / g or more. Further, it is preferably 50 J / g or less, more preferably 45 J / g or less, and further preferably 40 J / g or less.
  • the melting endotherm is the peak observed on the highest temperature side of the melting endothermic curve obtained by DSC measurement, with the line connecting the low temperature side without heat change and the high temperature side without heat change as the baseline. It is calculated by obtaining the area surrounded by the line portion including the line and the base line.
  • the melting endotherm of component (B) can be controlled by appropriately adjusting the monomer concentration and reaction pressure.
  • the melting point (Tm-D) of the propylene-based polymer is preferably not observed or is 0 ° C or higher and 120 ° C or lower.
  • a melting point is observed, from the same viewpoint, it is preferably 30 ° C. or higher, more preferably 45 ° C. or higher, even more preferably 60 ° C. or higher, even more preferably 75 ° C. or higher, and preferably 95 ° C. Or less, more preferably 90 ° C. or less, still more preferably 85 ° C. or less.
  • the melting point of the component (B) can be controlled by appropriately adjusting the monomer concentration and reaction pressure.
  • a differential scanning calorimeter (“DSC-7” manufactured by Perkin-Elmer Co., Ltd.) was used, and 10 mg of the sample was kept at ⁇ 10 ° C. for 5 minutes in a nitrogen atmosphere, and then 10 ° C./minute.
  • the melting point is defined as the peak top of the peak observed on the highest temperature side of the melting endothermic curve obtained by raising the temperature at.
  • Component (B) is not particularly limited as long as the above-mentioned melting endotherm satisfies the above range.
  • Specific propylene polymers include, for example, propylene homopolymer, propylene-ethylene block copolymer, propylene-butene block copolymer, propylene- ⁇ -olefin block copolymer, propylene-ethylene random copolymer. , Propylene-butene random copolymer, propylene-ethylene-butene ternary random copolymer, propylene- ⁇ -olefin random copolymer, propylene- ⁇ -olefin graft copolymer and the like.
  • propylene homopolymer selected from the group consisting of propylene homopolymer, propylene-ethylene random copolymer, propylene-butene random copolymer, propylene- ⁇ -olefin random copolymer and propylene-ethylene-butene ternary random copolymer. At least one propylene-based polymer is preferred.
  • the component (B) is more preferably a propylene homopolymer that does not contain an ethylene unit that is crosslinked by radicals generated by peroxide, light, heat or the like.
  • the component (B) when it is a copolymer, it may contain at least one constitutional unit selected from the group consisting of ethylene and an ⁇ -olefin having 4 to 30 carbon atoms in an amount of more than 0 mol% and 20 mol% or less. preferable. As a result, it is possible to suppress the generation of spots due to cross-linking and increase the flexibility of the hot melt adhesive.
  • the proportion of the constituent units in the copolymer is more preferably 0.5 mol% or more, further preferably 1.0 mol% or more, and more preferably 18.5 mol% or less, further preferably 15 mol% or less. It is 0.0 mol% or less, and even more preferably 10.0 mol% or less.
  • the weight average molecular weight (Mw) of the component (B) is preferably 20,000 or more and 300,000 or less. Within this range, the viscosity of the hot melt adhesive can be sufficiently reduced, and bleeding out of the low molecular weight component containing the tackifier can be suppressed.
  • the Mw is more preferably 25,000 or more and 200,000 or less, and further preferably 30,000 or more and 150,000 or less.
  • the weight average molecular weight (Mw) is a polystyrene conversion value measured by a gel permeation chromatography (GPC) method.
  • the component (B) can be obtained by polymerizing monomers in the presence of a polymerization catalyst such as a Ziegler-Natta type catalyst or a metallocene catalyst.
  • a polymerization catalyst such as a Ziegler-Natta type catalyst or a metallocene catalyst.
  • a metallocene catalyst it is preferable to use a metallocene catalyst, and for example, a metallocene catalyst as described in WO2003 / 087172 can be used for production.
  • a metallocene catalyst obtained by combining the above is preferable.
  • propylene-based polymers corresponding to the component (B) examples include “L-MODU” (registered trademark) (manufactured by Idemitsu Kosan Co., Ltd.), “S400”, “S410”, “S600”, and “S901”. Etc.
  • Commercially available products of amorphous poly- ⁇ -olefin (APAO) also include “REXtac” manufactured by REXtac, “Vestoplast” manufactured by Evonik, “Eastoflex” and “Aerafin” manufactured by Eastman (all are also available. Product name).
  • propylene-based elastomers include "Toughmer XM”, “Tufmer PN”, and “Tufmer SN” manufactured by Mitsui Chemicals; “Prime TPO” manufactured by Prime Polymer Co .; “Versify” manufactured by Dow Chemical Company. "Vistamaxx” manufactured by Exxon Mobile, “Linxar”; “Licocene” manufactured by Clariant; “Adflex” manufactured by Lyondellbasell, and the like (both are trade names).
  • the content rate of the component (B) in the total 100 mass% of the component (A) and the component (B) is 0.5% by mass or more and 70% by mass or less.
  • the content of the component (B) in the whole hot melt adhesive is preferably 0.5% by mass or more and 20% by mass or less. More preferably, it is 1 mass% or more, 15 mass% or less, and 12 mass% or less.
  • tackifying resin examples include hydrogenated derivatives of aliphatic hydrocarbon petroleum resins, rosin derivative resins, polyterpene resins, petroleum resins, oil-soluble phenol resins, etc. Examples thereof include liquid ones.
  • a hydrogenated product in consideration of compatibility with the base polymer (component (A) and component (B)).
  • component (A) and component (B) are more preferable.
  • tackifying resins examples include the following.
  • IMARV made by Idemitsu Kosan Co., Ltd.
  • Arkon made by Arakawa Chemical Industry Co., Ltd.
  • Quinton Natural Zeon Corporation
  • T-REZ made by JXTG Energy Co., Ltd.
  • Escorez made by ExxonMobil Chemical
  • Eastotac "Regalite”, “Regalrez”
  • Plastolin made above
  • Manufactured by Eastman Manufactured by Eastman
  • Sukolez manufactured by Kolon
  • Wingtack “Norsolene” (all manufactured by Cray Valley) (trade names).
  • Examples of the tackifier produced using an essential oil obtained from orange or the like as a raw material include “Clearon” (manufactured by Yasuhara Chemical Co., Ltd.), “Sylvalite”, and “Sylvares” (manufactured by Arizona Chemical Co., Ltd.). Is also the product name).
  • Examples of the tackifier produced using raw materials such as rosin include “Haritac”, “Neotole” (manufactured by Harima Chemicals Co., Ltd.) and “Ester gum”, “Pencel” (manufactured by Arakawa Chemical Industry Co., Ltd.) and the like. You can do (all are trade names).
  • the softening point of the component (C) is not particularly limited, but from the viewpoint of controlling the glass transition point and the elastic modulus of the hot melt adhesive within an appropriate range, it is preferably ⁇ 20 ° C. or higher, more preferably ⁇ . It is 15 ° C. or higher, more preferably ⁇ 10 ° C. or higher, and preferably 180 ° C. or lower, more preferably 170 ° C. or lower, still more preferably 160 ° C. or lower.
  • a softening point means a ring & ball softening point (JIS K 6863 conformity).
  • the blending amount of the component (C) is 50% by mass or more and 80% by mass or less based on 100% by mass of the hot melt adhesive.
  • the viscosity becomes remarkably high and applicability of the hot melt adhesive may be deteriorated. If it exceeds 80 mass%, the material strength may decrease.
  • a plasticizer (component (D)) may be further contained in addition to the components (A) to (C) described above.
  • the plasticizer is not particularly limited, but preferably used in a hot melt adhesive, and more preferably at least one selected from the group consisting of oil and wax. Further, as the plasticizer, phthalic acid esters, adipic acid esters, fatty acid esters, glycols, epoxy polymer plasticizers and the like can be used.
  • oils examples include paraffin oil, naphthene oil, isoparaffin oil and the like.
  • Commercially available paraffin oils are "Diana Process Oil PW-32", “Diana Process Oil PW-90”, “Diana Process Oil PW-150”, and “Diana Process Oil PS-32” manufactured by Idemitsu Kosan Co., Ltd. , “Diana Process Oil PS-90”, “Diana Process Oil PS-430”; “Kaydol oil”, “ParaLux oil” manufactured by Chevron USA, and the like (all are trade names).
  • naphthenic oils examples include “Diana Process Oil NS90” manufactured by Idemitsu Kosan Co., Ltd., “KN40102” manufactured by PetroChina, and “SNH” series manufactured by Sankyo Yuka Kogyo Co., Ltd. ( Both are trade names).
  • IP Solvent 1016 Commercially available isoparaffin-based oils include “IP Solvent 1016”, “IP Solvent 1620”, “IP Solvent 2028”, “IP Solvent 2835”, and “IP Clean LX” manufactured by Idemitsu Kosan Co., Ltd .; NOF Corporation ) "NA Solvent” series and the like (both are trade names).
  • wax examples include animal wax, vegetable wax, mineral wax, petroleum wax, synthetic wax and the like, and specifically, carnauba wax, candelilla wax, wood wax, beeswax, paraffin wax, microcrystalline wax, petrolatum. , Higher fatty acid wax, higher fatty acid ester wax, Fischer-Tropsch wax and the like.
  • the blending amount of the component (D) is preferably 10 parts by mass or more and 300 parts by mass or less, and 50 parts by mass or more and 200 parts by mass or less with respect to 100 parts by mass in total of the components (A) and (B). It is more preferable that the amount is 70 parts by mass or more and 150 parts by mass or less, further preferably 80 parts by mass or more and 120 parts by mass or less.
  • an additive such as an inorganic filler, an antioxidant, an ultraviolet absorber, a light stabilizer, and a lubricant may be added as long as the effect of the present invention is not impaired.
  • an additive as an inorganic filler, talc, calcium carbonate, barium carbonate, wollastonite, silica, clay, mica, kaolin, titanium oxide, diatomaceous earth, urea resin, styrene beads, starch, barium sulfate, sulfuric acid.
  • examples thereof include calcium, magnesium silicate, magnesium carbonate, alumina, and quartz powder.
  • antioxidants trisnonylphenyl phosphite, distearyl pentaerythritol diphosphite, "Adeka Stab 1178" (manufactured by ADEKA), “Sumilyzer TNP” (manufactured by Sumitomo Chemical Co., Ltd.), “Irgafos 168" ( BASF's), “Sandstab P-EPQ” (Sand) 's phosphorus antioxidants; 2,6-di-t-butyl-4-methylphenol, n-octadecyl-3- (3', 5 ' -Di-t-butyl-4'-hydroxyphenyl) propionate, "Sumilyzer BHT” (manufactured by Sumitomo Chemical Co., Ltd.), “Irganox 1010” (manufactured by BASF) and other phenolic antioxidants; dilauryl-3, 3'-thiodipropionate, pen
  • the hot melt adhesive of the present embodiment is prepared by blending the above-mentioned components (A) to (C), optionally the component (D) and, if necessary, various additives, melting by heating and mixing. It can be manufactured. Specifically, it can be produced by charging the above components into a heating device equipped with a stirrer and mixing them by heating.
  • the hot melt adhesive of the present embodiment may consist essentially of components (A) to (C), optionally component (D), and the above-mentioned additives (consisting essentially).
  • 80% by mass or more, 90% by mass or more, or 95% by mass or more of the hot melt adhesive of the present embodiment may be the components (A) to (C) and optionally the component (D). .
  • the hot-melt adhesive of the present embodiment uses a propylene-based polymer having a relatively low viscosity as a base polymer, it has excellent fluidity and low-temperature coatability, and can be suitably used as a coating method, particularly for spray coating. Further, since it has excellent adhesiveness to various base materials including low polar substances such as polyolefins, and also has excellent thermal stability during heating and melting, for example, for sanitary materials, packaging, bookbinding, for fibers, It can be used for woodworking, electric materials, can manufacturing, construction, filters, low pressure molding, bag making, and the like. Among them, it can be preferably used for sanitary materials.
  • the viscosity of the hot melt adhesive of the present embodiment should be appropriately adjusted according to the application, but is preferably 0.1 to 20 Pa ⁇ s, more preferably 0.5 to 10 Pa ⁇ s. , 1.0 to 5.0 Pa ⁇ s is more preferable.
  • the hot melt adhesive of this embodiment is preferably used for adhering a polyolefin material.
  • a polyolefin material For example, it is used for adhesion between polyolefin nonwoven fabric-polyolefin nonwoven fabric, adhesion between polyolefin film-polyolefin nonwoven fabric, preferably between polypropylene (PP) nonwoven fabric-PP nonwoven fabric, between polyethylene (PE) film-PP nonwoven fabric.
  • PP polypropylene
  • PE polyethylene
  • the hot melt adhesive of the present embodiment can be suitably used for disposable products, for example, sanitary products such as disposable diapers, sanitary products, pet sheets, hospital gowns, surgical lab coats and the like.
  • the disposable product according to one embodiment of the present invention may have a structure in which its constituent members (such as the above-mentioned films and nonwoven fabrics) are bonded with the hot-melt adhesive of the present invention, and the constituent member of the disposable product.
  • the manufacturing method a known method can be adopted.
  • Examples 1 to 4 and Comparative Examples 1 to 3 A heat-resistant glass bottle having a volume of 100 mL was charged so that the total content was 60 g so that the contents were as shown in Table 1. The temperature was raised from room temperature to 200 ° C over 30 minutes to melt the contents. The contents were then stirred with a spatula for 5 minutes and heated at 200 ° C. for 10 minutes. The stirring for 5 minutes and the heating for 10 minutes were repeated 5 times to obtain a hot-melt adhesive composed of the thermoplastic resin composition.
  • the hot melt adhesive obtained in each example was processed into a disk-shaped test piece having a diameter of 25 mm and a thickness of 1 mm by press molding.
  • a rheometer MCR301, manufactured by Anton Paar
  • set one of the above test pieces in the rheometer and measure the viscosity at a gap distance of 1.0 mm, a strain of 5%, a temperature of 230 ° C. and a shear rate of 100 s ⁇ 1. It was measured.
  • the results are shown in Table 1.
  • the thickness of the hot melt adhesive obtained in each example was 1 mm by press molding. This was cut into a length of 100 mm and a width of 100 mm and allowed to stand for 24 hours in an environment of 23 ° C. and a humidity of 50% or less to prepare a sample. The surface of the sample was pressed with the index finger for 1 second, and the tack strength when the index finger was released was evaluated on a scale of 1 (weak) to 5 (strong).
  • the tack strength of Comparative Example 2 in which the component (B) was not contained and the tack was not reduced was set to 5, and the ratio of the component (B) (B / (A + B) ⁇ 100: mass%) Is 100% by mass, the tack is excessively reduced, and thus the tack strength of Comparative Example 3 is set to 1.
  • the strength of tack was evaluated by each of the 5 subjects. Table 1 shows the average of the evaluation points of 5 persons.
  • the tack is preferably 2 or more and 4 or less, and more preferably 2 or more and 3 or less, from the viewpoint of removing the adhesive stain in products such as paper diapers.
  • the tack strength is lower than 2, the tackiness is suppressed, but the tack is reduced too much, and the physical strength of the adhered substrate may not be maintained. If the tack strength is 5, it may not be possible to suppress stickiness on the side where the stain has penetrated.
  • thermoplastic block copolymer> ⁇ (A-1) "Kraton D1102JSZ”: Styrene-Butadiene-Styrene Triblock Copolymer (SBS), Clayton Co., Ltd.
  • A-2 "Kraton G1652MU”: Styrene-ethylene / butene-styrene triblock copolymer (SEBS), manufactured by Kraton, Inc.
  • A-3 "Kraton D1161 JSP”: Styrene-isoprene-styrene block copolymer (SIS), manufactured by Kraton Co.
  • the physical properties of the component (B) were measured as follows. (1) Melting endotherm ( ⁇ HD) Using a differential scanning calorimeter (“DSC-7” manufactured by Perkin-Elmer Co., Ltd.), 10 mg of the sample was kept under nitrogen atmosphere at ⁇ 10 ° C. for 5 minutes and then heated at 10 ° C./minute. The melting endotherm was calculated from the melting endotherm curve. Further, the melting point (Tm-D) was determined from the peak top of the peak observed on the highest temperature side of the obtained melting endothermic curve. The melting endotherm was obtained by DSC measurement using a differential scanning calorimeter with a line connecting the low-temperature side with no change in heat quantity and the high-temperature side with no change in heat quantity as a baseline. It is calculated by obtaining the area surrounded by the line portion including the peak of the endothermic curve and the baseline.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Adhesives Or Adhesive Processes (AREA)

Abstract

L'invention concerne un adhésif thermofusible qui comprend les ingrédients (A), (B) et (C) suivants. La teneur en ingrédient (C) de l'adhésif thermofusible (100 % en masse) est égale à 50 à 80 % en masse et la teneur en ingrédient (B) de la somme des ingrédients (A) et (B) (100 % en masse) est égale à 0,5 à 30 % en masse. Ingrédient (A) : un copolymère séquencé thermoplastique qui est un copolymère d'un hydrocarbure vinylaromatique et d'un composé de diène conjugué. Ingrédient (B) : un polymère à base de propylène qui, lorsqu'il est maintenu à -10 °C sous une atmosphère d'azote pendant 5 minutes, puis chauffé à raison de 10 °C/min à l'aide d'un calorimètre à balayage différentiel (DSC), ne présente pas de pic endothermique de fusion ou donne une courbe endothermique de fusion qui montre un endotherme de fusion (ΔH-D) égal à 0 à 80 J/g. Ingrédient (C) : une résine collante.
PCT/JP2019/041301 2018-10-22 2019-10-21 Adhésif thermofusible WO2020085299A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115806789A (zh) * 2022-09-26 2023-03-17 嘉好(太仓)新材料股份有限公司 一种用于口罩耳带粘接热熔胶及其制备方法
CN115820163A (zh) * 2022-09-21 2023-03-21 江苏嘉好热熔胶股份有限公司 一种热稳定性优异的卫生用品结构胶及其制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6281470A (ja) * 1985-10-07 1987-04-14 Toagosei Chem Ind Co Ltd ホツトメルト接着剤組成物
JP2013064056A (ja) * 2011-09-16 2013-04-11 Henkel Japan Ltd ホットメルト接着剤
WO2015115449A1 (fr) * 2014-02-03 2015-08-06 出光興産株式会社 Adhésif thermofusible
JP2018076454A (ja) * 2016-11-10 2018-05-17 出光興産株式会社 プロピレン系重合体、プロピレン系樹脂組成物及びそれらを含むホットメルト接着剤

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6281470A (ja) * 1985-10-07 1987-04-14 Toagosei Chem Ind Co Ltd ホツトメルト接着剤組成物
JP2013064056A (ja) * 2011-09-16 2013-04-11 Henkel Japan Ltd ホットメルト接着剤
WO2015115449A1 (fr) * 2014-02-03 2015-08-06 出光興産株式会社 Adhésif thermofusible
JP2018076454A (ja) * 2016-11-10 2018-05-17 出光興産株式会社 プロピレン系重合体、プロピレン系樹脂組成物及びそれらを含むホットメルト接着剤

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115820163A (zh) * 2022-09-21 2023-03-21 江苏嘉好热熔胶股份有限公司 一种热稳定性优异的卫生用品结构胶及其制备方法
CN115806789A (zh) * 2022-09-26 2023-03-17 嘉好(太仓)新材料股份有限公司 一种用于口罩耳带粘接热熔胶及其制备方法
CN115806789B (zh) * 2022-09-26 2024-05-14 嘉好(太仓)新材料股份有限公司 一种用于口罩耳带粘接热熔胶及其制备方法

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