KR20200053868A - Hotmelt polyurethane adhesive with hydroxyl group having excellent coating property and adhesion property - Google Patents
Hotmelt polyurethane adhesive with hydroxyl group having excellent coating property and adhesion property Download PDFInfo
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4266—Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
- C08G18/4269—Lactones
- C08G18/4277—Caprolactone and/or substituted caprolactone
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
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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
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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
- C09J11/08—Macromolecular additives
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- C09J2201/61—
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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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
- C09J2301/304—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier the adhesive being heat-activatable, i.e. not tacky at temperatures inferior to 30°C
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Abstract
Description
본 발명은 낮은 온도에서도 충분히 용융되어 피착재의 손상을 방지하면서도 피착재에 용이하게 도포될 수 있고, 또한 우수한 접착력을 가질 수 있도록 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제에 관한 것이다.The present invention is a hot-melt polyurethane adhesive having excellent coatability and adhesion to a hydroxyl group, which can be easily applied to an adherend while being sufficiently melted even at a low temperature to prevent damage to the adherend, and to have excellent adhesion. It is about.
일반적으로 신발, 가방, 지갑 또는 각종 파우치와 같은 제품들은 직물 또는 합성수지 원단의 본체에 각종 부품, 장식물 또는 합포를 위한 원단 등을 봉제 및 접착에 의해 부착하게 된다. In general, products such as shoes, bags, purses, or various pouches are attached to the body of a fabric or synthetic resin fabric by sewing and bonding various parts, decorations or fabrics for fabrics.
상기 제품들 중, 신발의 제조과정을 예로 들면, 통상 신발 갑피 원단의 외부에 별도의 원단을 접착하여 합포하거나 또는, 선포(vamp)와 뒷일자 보강(back stay)을 덧대어 봉제한 다음, 그 외부에 앞일자 보강(fore stay)을 덧대어 봉제한 후, 앞보강을 덧대어 봉제하고, 그리고 최종적으로, 앞보강의 외부에 접착제를 이용하여 다양한 형상의 장식물을 접착시키는 과정을 거쳐 신발이 제조되며, 가방이나 지갑과 같은 제품들의 경우에도 상기 신발의 제조과정과 같은 공정을 거쳐 제조된다.Among the above products, for example, in the manufacturing process of shoes, a separate fabric is usually glued to the outside of the upper fabric of a shoe, or combined with a vamp and a back stay, and then sewed. The shoe is manufactured through the process of attaching and sewing the front reinforcement with the outer reinforcement, and finally, attaching the decorations of various shapes using adhesive on the outside of the front reinforcement. In the case of products such as bags or wallets, they are manufactured through the same process as the manufacturing process of the shoes.
하지만 상기와 같이 복잡한 단계의 봉제 공정을 거쳐 신발의 갑피 부분에 복잡한 형태의 봉제선들이 형성됨으로써, 장기간 신발을 신을 경우에는 봉제선이나 또는 봉제선의 틈 사이에 흙, 먼지 등이 끼여 검게 변색되어 고가의 신발이 훼손되어 패션성이 떨어지는 문제점이 발생할 뿐만 아니라 특히 제조과정에서도 다수의 봉제단계를 거침에 따라 봉제선에 의한 불량률이 매우 높아 생산성을 저하시키는 문제점이 있었다.However, through the complicated steps of the sewing process, complex seams are formed on the upper part of the shoes, so when wearing shoes for a long period of time, expensive shoes are generated by discoloration of dirt, dust, etc. between the seams or the gap between the seams. Not only does this result in a loss of fashionability due to the damage, but also a problem of deteriorating productivity due to a very high defect rate due to a seam, especially in the manufacturing process.
따라서, 최근들어 각종 장식이나 부품을 갑피 등의 피착제에 무봉제 방식으로 접착하는 기술에 대한 연구가 활발하게 진행되고 있다.Therefore, in recent years, research on a technique of adhering various decorations or parts to an adherend such as an upper in a seamless manner has been actively conducted.
이와 관련하여 핫멜트형 폴리우레탄 접착제가 널리 사용되고 있으며, 폴리우레탄 수지의 흐름성을 좋게 하기 위해 일반적으로 가소제, 점착부여제 등을 혼합하여 사용하지만 저분자량의 물질 첨가로 인해 접착력 및 기계적 특성이 감소하는 문제점이 있다.In this regard, hot-melt type polyurethane adhesives are widely used, and in order to improve the flowability of polyurethane resins, plasticizers and tackifiers are generally mixed, but adhesion and mechanical properties are reduced due to the addition of low molecular weight materials. There is a problem.
한편, 일반적으로 신발에 사용되는 접착제의 경우 용제형, 수성형, 무용제형 타입이 있는데 용제형은 휘발화합물로 인해 인체에 유해하고, 수성형은 건조시간이 길고, 무용제형(핫멜트형)은 주로 이소시아네이트기가 말단인 반응형으로 초기 고정성이 약하고 습도에 민감하여 물성 차이가 심한 단점이 있다.On the other hand, in general, in the case of adhesives used in shoes, there are solvent type, water type, and solvent-free type. The solvent type is harmful to the human body due to volatile compounds, and the water type has a long drying time, and the solvent-free type (hot melt type) is mainly used. It is a reactive type in which the isocyanate group is terminal, and has a weak initial fixation property and is sensitive to humidity.
하지만 무용제형 중에서도 수산기가 말단인 핫멜트 접착제의 경우 고온에서 용융시켜 부착시킨 후 열원이 사라지면 접착력을 나타내므로 매우 친환경적이고 공정이 간단하다. 하지만 핫멜트 접착제의 주 성분인 폴리우레탄 수지는 융점이 높고 흐름성을 부여하기 위해 150℃ 이상의 온도를 가해야하는데 이때 부착하고자 하는 피착재에 열손상이 발생되는 문제점이 있다. 그리고 흐름성을 좋게 하기 위해 가소제등의 첨가제를 사용하는 경우 점도는 낮아지지만 접착력이 감소되는 문제가 발생한다. 따라서 낮은 온도에서 충분히 용융되어 피착재에 도포되고 접착력을 나타내는 접착제 개발이 요구된다.However, among the solvent-free type, in the case of a hot-melt adhesive having a hydroxyl group at the end, it melts at high temperature and adheres to it, so it exhibits adhesion when the heat source disappears, making it very eco-friendly and simple to process. However, the polyurethane resin, which is the main component of the hot melt adhesive, has a high melting point and a temperature of 150 ° C. or higher must be applied to impart flowability. At this time, there is a problem in that thermal damage occurs on the adherend to be attached. In addition, when an additive such as a plasticizer is used to improve flowability, the viscosity is lowered, but the adhesive strength is reduced. Therefore, it is required to develop an adhesive that melts sufficiently at a low temperature and is applied to an adherend and exhibits adhesive strength.
관련 선행기술로써 특허문헌 1은 폴리올, 이작용성 쇄 연장제 및 유기 디이소시아네이트를 소정 비율로 혼합 반응시켜 융점을 서로 다르게 조정하여 제조된 접착제용 핫멜트 열가소성폴리우레탄 수지를 제공하고, 이를 이용하여 제조된 적층필름을 제조하였다.As a related prior art, Patent Document 1 provides a hot melt thermoplastic polyurethane resin for adhesives prepared by mixing and reacting polyols, bifunctional chain extenders, and organic diisocyanates at a predetermined ratio to prepare different melting points. A laminated film was prepared.
즉, 상기 특허문헌 1은 열접착시 발생하는 열에 강한 높은 융점과 연화점을 가진 내열성을 구비할 뿐만 아니라 유기 용제형 폴리우레탄 제조에서 발생하는 용제에 의한 환경오염을 방지하고, 인체에 유해한 물질의 발생을 근원적으로 차단하며, 재활용이 가능하도록 하였으며, 또한, 신발 및 의류의 봉제선을 따라서 발생하는 누수를 방지하고 외관을 미려하게 피복시키는 동시에 물리적인 특성인 내구성, 유연성, 방오성, 방수성, 재활용율, 고마모성 및 고파열성에 대한 내성 요건의 향상을 구현한 것이다.That is, the patent document 1 not only has heat resistance having a high melting point and a softening point, which is strong against heat generated during heat bonding, but also prevents environmental pollution by solvents generated in the production of organic solvent-type polyurethanes, and generates substances harmful to the human body. It essentially blocks and makes it possible to recycle, and also prevents leaks that occur along the seams of shoes and clothes and coats the exterior beautifully, while at the same time having physical properties such as durability, flexibility, antifouling properties, waterproofness, recycling rate, high It is an improvement of the requirements for abrasion resistance and high rupture resistance.
하지만, 상기 특허문헌 1의 경우 그 융점이 비교적 높아 열접착 시 비교적 높은 온도조건이 수반되어야 하며, 이로 인해 피착재 원단을 일부 손상시키게 되는 문제점이 있었다.However, in the case of Patent Document 1, the melting point thereof is relatively high, and therefore, a relatively high temperature condition must be involved when heat-sealing, thereby causing some damage to the fabric of the adherend.
따라서, 본 발명은 상술한 문제점을 해결하기 위한 것으로, 폴리올, 이소시아네이트 및 쇄연장제를 반응시켜 폴리우레탄 접착제 자체만으로 높은 MI(melt index) 값을 갖는 핫멜트 폴리우레탄 접착제를 제공함으로써, 낮은 온도에서도 충분히 용융되어 피착재의 손상을 방지하면서도 피착재에 용이하게 도포될 수 있고, 또한 우수한 접착력을 가질 수 있도록 함을 과제로 한다.Therefore, the present invention is to solve the above-mentioned problems, by providing a hot-melt polyurethane adhesive having a high MI (melt index) value only with the polyurethane adhesive itself by reacting polyol, isocyanate and chain extender, sufficiently at a low temperature The problem is to be able to be easily applied to the adherend while being melted to prevent damage to the adherend, and to have excellent adhesion.
본 발명은 핫멜트 폴리우레탄 접착제에 있어서, 분자량이 600 ~ 3,000인 폴리올 50 ~ 80 중량%, 이소시아네이트 15 ~ 35 중량% 및 쇄연장제 5 ~ 15 중량%를 반응시켜 이루어지며, MI(melt index)가 50 ~ 400을 가지는 것을 특징으로 하는, 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제를 과제의 해결 수단으로 한다.The present invention is made by reacting 50 to 80% by weight of a polyol having a molecular weight of 600 to 3,000, 15 to 35% by weight of isocyanate, and 5 to 15% by weight of a chain extender in a hot melt polyurethane adhesive, and has a MI (melt index). A hot-melt polyurethane adhesive having 50 to 400, which has excellent coatability and adhesion, is used as a solution to the problem.
여기서 상기 핫멜트 폴리우레탄 접착제는, 폴리올과 이소시아네이트를 40 ~ 80℃에서 300 ~ 1000rpm의 교반속도로 교반시키고 70 ~ 120℃에서 10 ~ 30분간 반응시켜 프리폴리머를 제조한 후, 여기에 쇄연장제를 혼합하여 제조되는 것이 바람직하다.Here, the hot-melt polyurethane adhesive is prepared by stirring a polyol and an isocyanate at 40 to 80 ° C at a stirring speed of 300 to 1000 rpm, and reacting at 70 to 120 ° C for 10 to 30 minutes to prepare a prepolymer, and then mixing a chain extender. It is preferably produced.
한편 상기 폴리올은, 폴리에스테르 디올, 폴리카프로락톤 디올, 폴리카보네이트 디올 또는 폴리에테르 디올 중에서 단독 또는 2종 이상 혼용하여 사용하는 것이 바람직하다.Meanwhile, the polyol is preferably used alone or in combination of two or more of polyester diol, polycaprolactone diol, polycarbonate diol, or polyether diol.
그리고 상기 이소시아네이트는, 톨루엔 디이소시아네이트, 헥사메틸렌 디이소시아네이트, 이소포론디이소시아네이트 또는 디페닐메탄 디이소시아네이트 중에서 단독 또는 2종 이상 혼용하여 사용하는 것이 바람직하다.In addition, the isocyanate is preferably used alone or in combination of two or more of toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate or diphenylmethane diisocyanate.
또한 상기 쇄연장제는, 디올(diol) 또는 디아민(diamine) 중에서 단독 또는 2종 이상 혼용하여 사용하는 것이 바람직하다.Further, the chain extender is preferably used alone or in combination of two or more of diols or diamines.
아울러 상기 핫멜트 폴리우레탄 접착제는, NCO/OH가 0.85 ~ 1.00으로 합성하였을 때, MI(melt index)가 50 ~ 400인 것이 바람직하다.In addition, the hot-melt polyurethane adhesive, when NCO / OH is synthesized to 0.85 ~ 1.00, MI (melt index) is preferably 50 ~ 400.
본 발명은 폴리올, 이소시아네이트 및 쇄연장제를 반응시켜 높은 MI(melt index) 값을 갖는 핫멜트 폴리우레탄 접착제를 제공함으로써, 낮은 온도에서도 충분히 용융되어 피착재의 손상을 방지하면서도 피착재에 용이하게 도포될 수 있고,또한 우수한 접착력을 가질 수 있는 효과가 있다.The present invention provides a hot-melt polyurethane adhesive having a high MI (melt index) value by reacting polyol, isocyanate, and chain extender, so that it can be easily melted even at low temperatures and easily applied to the adherend while preventing damage to the adherend. There is also an effect that can have excellent adhesion.
상기의 효과를 달성하기 위한 본 발명은 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제에 관한 것으로, 본 발명을 이해하는데 필요한 부분만이 설명되며 그 이외 부분의 설명은 본 발명의 요지를 흩트리지 않도록 생략될 것이라는 것을 유의하여야 한다.The present invention for achieving the above effect relates to a hot-melt polyurethane adhesive having excellent coatability and adhesiveness with a hydroxyl group as a terminal, and only parts necessary to understand the present invention are described, and descriptions of other parts of the present invention It should be noted that it will be omitted so as not to distract the gist.
이하, 본 발명의 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제를 상세히 설명하면 다음과 같다.Hereinafter, a hot-melt polyurethane adhesive having excellent coatability and adhesion with the hydroxyl group of the present invention as a terminal will be described in detail as follows.
본 발명에 따른 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제는, 분자량이 600 ~ 3,000인 폴리올 50 ~ 80 중량%, 이소시아네이트 15 ~ 35 중량% 및 쇄연장제 5 ~ 15 중량%를 반응시켜 이루어지며, MI(melt index)가 50 ~ 400을 가지는 것을 특징으로 한다.The hot-melt polyurethane adhesive having excellent coatability and adhesion according to the present invention is made by reacting 50 to 80% by weight of polyol having a molecular weight of 600 to 3,000, 15 to 35% by weight of isocyanate, and 5 to 15% by weight of chain extender, , MI (melt index) is characterized by having 50 ~ 400.
여기서 MI(melt index)는 일정하중, 일정온도에서 가지는 플라스틱 재료의 용융 흐름성을 나타내는 것으로, MI 값이 높을 수록 저융점에서도 양호한 용융 흐름성을 갖는다.Here, the MI (melt index) indicates the melt flow property of a plastic material having a constant load and a constant temperature, and the higher the MI value, the better the melt flow even at a low melting point.
본 발명에서의 상기 MI 측정 값은 MI 측정기기(MFI 10 (LLOYD))를 사용하여 ASTM D 1238에 규정한 방법에 따라 하중 2.16㎏, 예열시간은 7분, 온도는 150℃, 다이는 1×10㎜를 사용하여 측정한 값을 기준으로 한다.The MI measurement value in the present invention is a load of 2.16 kg, a preheating time of 7 minutes, a temperature of 150 ° C., a die of 1 × according to the method specified in ASTM D 1238 using a MI measuring device (MFI 10 (LLOYD)). It is based on the value measured using 10 mm.
여기서, 상기와 같은 핫멜트 폴리우레탄 접착제의 제조방법은 이미 공지된 다양한 방법을 적용할 수 있으나, 본 발명에서는 일 예로 폴리올과 이소시아네이트를 40 ~ 80℃에서 300 ~ 1000rpm의 교반속도로 교반시키고 70 ~ 120℃에서 10 ~ 30분간 반응(NCO/OH가 0.85 ~ 1.00)시켜 프리폴리머를 제조한 후, 여기에 쇄연장제를 혼합하여 제조하며, 이때 MI(melt index, g/10min)가 50 ~ 400이 되도록 한다.Here, a method of manufacturing the hot-melt polyurethane adhesive as described above may be applied to various methods already known, but in the present invention, for example, polyol and isocyanate are stirred at a stirring speed of 300 to 1000 rpm at 40 to 80 ° C. and 70 to 120 After preparing the prepolymer by reacting at N ° C for 10 to 30 minutes (NCO / OH is 0.85 to 1.00), a chain extender is mixed therewith, and the MI (melt index, g / 10min) is 50 to 400. do.
이때, MI 값이 400 초과인 경우 초기 고정성 및 초기 접착력이 나쁘고 50 미만인 경우 흐름성이 낮아 흐름성 부여를 위한 가열 시 피착재가 손상될 우려가 있다.At this time, if the MI value is more than 400, the initial fixability and initial adhesion are poor, and if it is less than 50, the flowability is low, and there is a fear that the adherend is damaged during heating to impart flowability.
상기 폴리우레탄은 우레탄결합을 주쇄에 포함하는 고분자의 일종이다. 폴리우레탄은 폴리올의 히드록시기(-OH)와 이소시아네이트의 이소시안산기(-NCO)의 중축합으로 우레탄결합이 형성되며, 사용되는 폴리올과 이소시아네이트의 특성에 따라 얻어지는 폴리우레탄의 특성이 달라진다.The polyurethane is a type of polymer containing a urethane bond in the main chain. Polyurethane has a urethane bond formed by polycondensation of a hydroxy group (-OH) of a polyol and an isocyanate group (-NCO) of an isocyanate, and the properties of the obtained polyurethane vary depending on the properties of the polyol and isocyanate used.
본 발명에서 사용되는 폴리올은 폴리에스테르 디올, 폴리카프로락톤 디올, 폴리카보네이트 디올 또는 폴리에테르 디올 중에서 단독 또는 2종 이상 혼용하여 사용할 수 있으나, 여기에 한정되는 것은 아니고, 본 발명과 관련된 기술 분야에서 이미 공지된 다양한 유형의 폴리올을 적용할 수 있다.The polyol used in the present invention may be used alone or in combination of two or more of polyester diol, polycaprolactone diol, polycarbonate diol or polyether diol, but is not limited thereto, and has already been used in the technical field related to the present invention. Various types of known polyols can be applied.
한편, 상기 폴리올은 분자량이 600 ~ 3,000인 것을 사용하는데, 상기 분자량이 상기 범위를 벗어날 경우 높은 MI 값을 나타내지 못할 우려가 있다. 그리고 상기와 같은 분자량 600 ~ 3,000의 폴리올은 50 ~ 80 중량%가 사용되는데 폴리올의 함량이 50 중량% 미만일 경우 폴리우레탄으로 충분히 합성되지 못할 우려가 있으며, 80 중량%를 초과할 경우 접착성이 저하될 우려가 있다.On the other hand, the polyol has a molecular weight of 600 to 3,000, but if the molecular weight is outside the above range, there is a fear that a high MI value may not be exhibited. In addition, 50 to 80% by weight of the polyol having a molecular weight of 600 to 3,000 is used, but when the content of the polyol is less than 50% by weight, there is a concern that it may not be sufficiently synthesized as polyurethane, and when it exceeds 80% by weight, adhesiveness decreases. It might be.
본 발명에서 사용되는 이소시아네이트는, 톨루엔 디이소시아네이트, 헥사메틸렌 디이소시아네이트, 이소포론디이소시아네이트 또는 디페닐메탄 디이소시아네이트 중에서 단독 또는 2종 이상 혼용하여 사용할 수 있으나, 여기에 한정되는 것은 아니고, 본 발명과 관련된 기술 분야에서 이미 공지된 다양한 유형의 이소시아네이트를 적용할 수 있다.The isocyanate used in the present invention may be used alone or in combination of two or more of toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate or diphenylmethane diisocyanate, but is not limited thereto. Various types of isocyanates already known in the art can be applied.
한편, 상기 이소시아네이트의 함량이 15 중량% 미만일 경우 hard segment 감소로 폴리우레탄 기계적 특성이 감소할 우려가 있으며, 35 중량%를 초과할 경우, 접착제가 너무 딱딱해져 우려가 있다.On the other hand, if the content of the isocyanate is less than 15% by weight, there is a fear that the mechanical properties of polyurethane may decrease due to a reduction in the hard segment, and if it exceeds 35% by weight, the adhesive may become too hard.
본 발명에서 사용되는 쇄연장제는 디올(diol) 또는 디아민(diamine)을 사용할 수 있으며, 보다 구체적으로는 에틸렌글리콜, 디에틸렌글리콜, 부탄디올, 헥산디올, 네오펜틸글리콜, 디메칠사이클로핵산디메티놀, 폴리테트라메틸렌에테르글리콜, 하이드로퀴논 에티놀 에테르, 메틸렌 펜탄 디올, 트리메틸올프로판 중에서 단독 또는 2종 이상 병용하여 사용할 수 있으나, 여기에 한정되는 것은 아니고, 본 발명과 관련된 기술 분야에서 이미 공지된 다양한 유형의 쇄연장제를 적용할 수 있다.The chain extender used in the present invention may use diol or diamine, and more specifically, ethylene glycol, diethylene glycol, butanediol, hexanediol, neopentyl glycol, dimethylcyclonucleic acid dimethinol , Polytetramethylene ether glycol, hydroquinone ethynol ether, methylene pentane diol, trimethylolpropane alone or in combination of two or more, but is not limited thereto, various known in the art related to the present invention Types of chain extenders can be applied.
여기서 상기 디올(diol)은 OH(CH2)nOH 구조로 n이 4~12이고 디아민(diamine)은 NH2(CH2)nNH2 구조로 n이 6이상인 것으로 한정하여 사용할 수 있고, 보다 구체적으로 접착력 및 내열성 확보를 위해 디올(diol)계 97 ~ 99.9 중량% 및 다이아민(diamine)계 0.1 ~ 3.0 중량%를 사용할 수 있으나 반드시 여기에 한정되는 것은 아니고, 본 발명과 관련된 기술 분야에서 이미 공지된 다양한 유형의 쇄연장제를 적용할 수 있다.Here, the diol (diol) is OH (CH2) nOH structure n is 4 to 12 and diamine (diamine) is NH2 (CH2) nNH2 structure n is 6 or more can be used as limited, more specifically secure adhesion and heat resistance For diol (diol) 97 to 99.9% by weight and diamine (diamine) 0.1 to 3.0% by weight can be used, but is not necessarily limited to, various types of chains already known in the art related to the present invention Extenders can be applied.
한편, 상기 쇄연장제의 함량이 5 중량% 미만일 경우, 폴리우레탄 수지의 물성이 저하될 우려가 있으며, 15 중량%를 초과할 경우, 접착제의 경화 후 경도가 과도하게 상승하게될 우려가 있다.On the other hand, when the content of the chain extender is less than 5% by weight, the physical properties of the polyurethane resin may be deteriorated, and when it exceeds 15% by weight, there is a fear that the hardness after the curing of the adhesive is excessively increased.
아울러, 상기와 같은 조성으로 제조되는 핫멜트 폴리우레탄 접착제는, 하드세그먼트와 소프트세그먼트 비율이 10 : 90 ~ 20 : 80인 것이 바람직하지만 여기에 한정되는 것은 아니다.In addition, the hot-melt polyurethane adhesive prepared with the above composition is preferably a hard segment and a soft segment ratio of 10:90 to 20:80, but is not limited thereto.
그리고, 상기와 상기와 같은 조성으로 제조되는 핫멜트 폴리우레탄 접착제는 통상의 첨가제 예를 들면(점착부여제, 산화방지제, 왁스 등)을 첨가할 수 있다. 보다 구체적으로 핫멜트 폴리우레탄 접착제의 초기 접착력을 높이기 위해 핫멜트 폴리우레탄 접착제 100 중량부에 대하여, 점착부여제를 1 ~ 10 중량부 첨가할 수 있고, 수첨 탄화수소 수지, 로진계, 터펜계, 페놀계 등을 사용할 수 있으며, 또한 핫멜트 폴리우레탄 접착제의 저장안정성을 위해 산화방지제를 0.5 ~ 3 중량부를 첨가할 수 있고, 페놀 및 황 및 인 함유 페놀과 같은 다관능성 페놀을 사용할 수 있고, 또한 핫멜트 폴리우레탄 접착제의 가공성을 높이기 위해 왁스를 0.5 ~ 5 중량% 첨가할 수 있고, 왁스는 파라핀 왁스, 폴리에틸렌 왁스, 산화 왁스 등을 사용할 수 있으나 반드시 상기 첨가제에 한정되는 것은 아니고 그 목적에 맞게 이미 공지된 다양한 첨가제의 사용이 가능하다. 한편, 핫멜트 폴리우레탄 접착제에 첨가되는 첨가제들은 100 ~ 200℃ 사이에서 용융시켜 혼합시켜 제조한다.And, the hot-melt polyurethane adhesive prepared in the above and the above composition may be added with a conventional additive such as (adhesive agent, antioxidant, wax, etc.). More specifically, in order to increase the initial adhesive strength of the hot-melt polyurethane adhesive, 1 to 10 parts by weight of a tackifier can be added with respect to 100 parts by weight of the hot-melt polyurethane adhesive, hydrogenated hydrocarbon resin, rosin, terpene, phenol, etc. Can be used, and also for the storage stability of the hot-melt polyurethane adhesive, 0.5 to 3 parts by weight of an antioxidant can be added, polyfunctional phenols such as phenol and sulfur and phosphorus-containing phenols can be used, and also hot-melt polyurethane adhesives To increase the processability of the wax can be added 0.5 to 5% by weight, the wax can be used paraffin wax, polyethylene wax, oxidized wax, etc., but is not necessarily limited to the above additives, and various additives already known according to the purpose It can be used. Meanwhile, additives added to the hot melt polyurethane adhesive are prepared by melting and mixing between 100 and 200 ° C.
이하, 본 발명을 아래 실시예에 의거하여 더욱 상세히 설명하겠는바 본 발명이 실시예에 의해 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail based on the following examples, but the present invention is not limited by the examples.
1. 핫멜트 폴리우레탄 접착제의 제조1. Preparation of hot melt polyurethane adhesive
(실시예 1)(Example 1)
분자량이 3,000인 폴리올(폴리에스테르 디올) 50 중량% 및 이소시아네이트(톨루엔 디이소시아네이트) 35 중량%를 40℃에서 1000rpm의 교반속도로 30분간 교반시키고 70℃의 오븐에서 24시간 반응(NCO/OH가 0.85 ~ 1.00)시켜 프리폴리머를 제조한 후, 여기에 쇄연장제(에틸렌글리콜) 15중량%를 혼합하여 테프론 금형에 부은 후 80℃의 오븐에서 12시간 반응시켜 제조하였다.50% by weight of polyol (polyester diol) having a molecular weight of 3,000 and 35% by weight of isocyanate (toluene diisocyanate) were stirred at 40 ° C for 30 minutes at a stirring speed of 1000 rpm and reacted in an oven at 70 ° C for 24 hours (NCO / OH was 0.85) ~ 1.00) to prepare a prepolymer, and then mixed with 15% by weight of a chain extender (ethylene glycol), poured into a Teflon mold, and reacted for 12 hours in an oven at 80 ° C.
(실시예 2)(Example 2)
분자량이 2,000인 폴리올(폴리카프로락톤 디올) 80 중량% 및 이소시아네이트(헥사메틸렌 디이소시아네이트) 15 중량%를 80℃에서 300rpm의 교반속도로 30분간 교반시키고 120℃의 오븐에서 12시간 반응(NCO/OH가 0.85 ~ 1.00)시켜 프리폴리머를 제조한 후, 여기에 쇄연장제(디에틸렌글리콜) 5 중량%를 혼합하여 테프론 금형에 부은 후 80℃의 오븐에서 12시간 반응시켜 제조하였다.80% by weight of polyol (polycaprolactone diol) having a molecular weight of 2,000 and 15% by weight of isocyanate (hexamethylene diisocyanate) were stirred at 80 ° C for 30 minutes at a stirring speed of 300 rpm and reacted for 12 hours in an oven at 120 ° C (NCO / OH (0.85 ~ 1.00) to prepare a prepolymer, and then mixed with 5% by weight of a chain extender (diethylene glycol), poured into a Teflon mold, and reacted for 12 hours in an oven at 80 ° C.
(실시예 3)(Example 3)
분자량이 600인 폴리올(폴리카프로락톤 디올) 80 중량% 및 이소시아네이트(헥사메틸렌 디이소시아네이트) 15 중량%를 80℃에서 300rpm의 교반속도로 10분간 교반시키고 120℃의 오븐에서 12시간 반응(NCO/OH가 0.85 ~ 1.00)시켜 프리폴리머를 제조한 후, 여기에 쇄연장제(부탄디올) 5 중량%를 혼합하여 테프론 금형에 부은 후 80℃의 오븐에서 12시간 반응시켜 제조하였다.80% by weight of polyol (polycaprolactone diol) having a molecular weight of 600 and 15% by weight of isocyanate (hexamethylene diisocyanate) were stirred at 80 ° C at a stirring speed of 300 rpm for 10 minutes and reacted in an oven at 120 ° C for 12 hours (NCO / OH (0.85 ~ 1.00) to prepare a prepolymer, and then mixed with 5% by weight of a chain extender (butanediol) and poured into a Teflon mold and reacted for 12 hours in an oven at 80 ° C.
(비교예 1)(Comparative Example 1)
시판용 폴리우레탄 수지(제품명 : PE429, 제조사 : Huntsman) 100 중량부에 대하여, 가소제(비스-2(에틸헥실)말레에이트) 50 중량부를 혼합하여 제조하였다.It was prepared by mixing 50 parts by weight of a plasticizer (bis-2 (ethylhexyl) maleate) with respect to 100 parts by weight of a commercially available polyurethane resin (product name: PE429, manufacturer: Huntsman).
(비교예 2)(Comparative Example 2)
시판용 폴리우레탄 수지(제품명 : Pearlbond, 제조사 : Lubrizol) 100 중량부에 대하여, 가소제(비스-2(에틸헥실)말레에이트) 70 중량부를 혼합하여 제조하였다.It was prepared by mixing 70 parts by weight of a plasticizer (bis-2 (ethylhexyl) maleate) with respect to 100 parts by weight of a commercially available polyurethane resin (product name: Pearlbond, manufacturer: Lubrizol).
(비교예 3)(Comparative Example 3)
시판용 폴리우레탄 수지(제품명 : Polyurethane, 제조사 : Huntsman) 100 중량부에 대하여, 가소제(비스-2(에틸헥실)말레에이트) 150 중량부를 혼합하여 제조하였다.It was prepared by mixing 150 parts by weight of a plasticizer (bis-2 (ethylhexyl) maleate) with respect to 100 parts by weight of a commercially available polyurethane resin (product name: Polyurethane, manufacturer: Huntsman).
2. 핫멜트 폴리우레탄 접착제의 평가2. Evaluation of hot melt polyurethane adhesive
(1) MI(melt index, g/10min)(1) MI (melt index, g / 10min)
용융지수는 ASTM D 1238에 규정한 방법에 따라 하중 2.16㎏, 예열시간은 7분, 온도는 150℃, 다이는 1×10㎜를 사용하여 측정하였다(측정기기 : MFI 10 (LLOYD)).The melt index was measured using a load of 2.16 kg, a preheating time of 7 minutes, a temperature of 150 ° C., and a die of 1 × 10 mm according to the method specified in ASTM D 1238 (Measuring device: MFI 10 (LLOYD)).
(2) 용융점도(2) Melt viscosity
용융점도계(Brookfield Viscometer)를 이용하여 측정하였다.It was measured using a melt viscometer (Brookfield Viscometer).
(3) 접착력(3) Adhesion
접착강도는 고무와 EVA foam을 실시예 및 비교예에 따른 접착제로 접착한 후, ASTM D 1876에 규정한 방법에 따라 만능시험기를 사용하여 측정하였다. 단, 속도는 200m/min으로 하였다.The adhesive strength was measured by bonding the rubber and EVA foam with adhesives according to Examples and Comparative Examples, and then using a universal testing machine according to the method specified in ASTM D 1876. However, the speed was set to 200 m / min.
(cps)Melt viscosity
(cps)
(kgf/cm)Adhesion
(kgf / cm)
상기 [표 1]에서와 같이 본 발명에 따른 실시예는 비교적 높은 MI(melt index) 가짐에 따라 저융점 특성을 나타내어 도포성(흐름성)을 향상시킬 뿐만 아니라 접착력 또한 우수함을 알 수 있다.As shown in [Table 1], it can be seen that the embodiment according to the present invention exhibits a low melting point characteristic as it has a relatively high MI (melt index), thereby improving the applicability (flowability) as well as excellent adhesion.
상술한 바와 같이, 본 발명에 따른 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제를 상기의 바람직한 실시 예를 통해 설명하고, 그 우수성을 확인하였지만 해당 기술 분야의 당업자라면 하기의 특허 청구범위에 기재된 본 발명의 사상 및 영역으로부터 벗어나지 않는 범위 내에서 본 발명을 다양하게 치환, 변형 및 변경시킬 수 있음을 이해할 수 있을 것이다.As described above, a hot-melt polyurethane adhesive having excellent coatability and adhesiveness with a hydroxyl group according to the present invention is described through the above preferred embodiment, and its excellence has been confirmed, but those skilled in the art will have the following patents It will be understood that the present invention may be variously substituted, modified, and modified within the scope not departing from the spirit and scope of the invention as set forth in the claims.
Claims (13)
분자량이 600 ~ 3,000인 폴리올 50 ~ 80 중량%, 이소시아네이트 15 ~ 35 중량% 및 쇄연장제 5 ~ 15 중량%를 반응시켜 이루어지며, MI(melt index)가 50 ~ 400을 가지는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
In the hot melt polyurethane adhesive,
It is made by reacting 50 to 80% by weight of a polyol having a molecular weight of 600 to 3,000, 15 to 35% by weight of isocyanate, and 5 to 15% by weight of a chain extender, characterized by having a MI (melt index) of 50 to 400, A hot-melt polyurethane adhesive with excellent coatability and adhesion with a hydroxyl group as a terminal.
상기 폴리올은,
폴리에스테르 디올, 폴리카프로락톤 디올, 폴리카보네이트 디올 또는 폴리에테르 디올 중에서 단독 또는 2종 이상 혼용하여 사용하는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The polyol,
A hot-melt polyurethane adhesive having excellent coatability and adhesion to hydroxyl groups, characterized in that it is used alone or in combination of two or more of polyester diol, polycaprolactone diol, polycarbonate diol, or polyether diol.
상기 핫멜트 폴리우레탄 접착제는,
폴리올과 이소시아네이트를 40 ~ 80℃에서 300 ~ 1000rpm의 교반속도로 교반시키고 70 ~ 120℃에서 10 ~ 30분간 반응시킨 후, 여기에 쇄연장제를 혼합하여 제조되는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The hot-melt polyurethane adhesive,
After stirring the polyol and isocyanate at 40 ~ 80 ℃ at a stirring speed of 300 ~ 1000rpm and reacting for 10 ~ 30 minutes at 70 ~ 120 ℃, characterized in that produced by mixing a chain extender, hydroxyl group to the end Hot melt polyurethane adhesive with excellent coating and adhesive properties.
상기 폴리에스테르 디올은
결정성 폴리올 70 ~ 95중량%, 비결정성 폴리올 5 ~ 30중량%를 혼합하여 사용하며 결정성 폴리올은 실온에서 고체 형태로 1,4-BD와 같은 diol과 아디픽산(AA)와 같은 acid로 합성된 것이고, 비결정성 폴리올은 실온에서 액체 형태로 NPG와 같은 diol과 아디픽산(AA)와 같은 acid로 합성된 것을 사용하는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The polyester diol is
70 to 95% by weight of crystalline polyol and 5 to 30% by weight of amorphous polyol are used in combination. Crystalline polyol is synthesized with diol such as 1,4-BD and acid such as adipic acid (AA) in solid form at room temperature. The amorphous polyol is a hot-melt poly excellent in coatability and adhesion at the end of the hydroxyl group, characterized in that it is synthesized from diol such as NPG and acid such as adipic acid (AA) in liquid form at room temperature. Urethane adhesive.
상기 이소시아네이트는,
톨루엔 디이소시아네이트, 디페닐메탄 디이소시아네이트 등 방향족계 이소시아네이트를 15중량% ~ 90중량%를 사용하고, 헥사메틸렌 디이소시아네이트, 이소포론디이소시아네이트 등 지방족계 이소시아네이트를 10중량% ~ 85중량%를 혼합하여 사용하는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The isocyanate,
Aromatic isocyanates such as toluene diisocyanate and diphenylmethane diisocyanate are used in an amount of 15% to 90% by weight, and aliphatic isocyanates such as hexamethylene diisocyanate and isophorone diisocyanate are used in a mixture of 10% to 85% by weight. A hot-melt polyurethane adhesive having excellent coatability and adhesiveness with a hydroxyl group as a terminal.
상기 쇄연장제는,
디올(diol) 또는 디아민(diamine) 중에서 단독 또는 2종 이상 혼용하여 사용하는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The chain extender,
A hot-melt polyurethane adhesive having excellent coatability and adhesion with hydroxyl groups as a terminal, characterized in that it is used alone or in combination of two or more of diols or diamines.
상기 디올(diol)은,
OH(CH2)nOH 구조로 n이 4~12이고 디아민(diamine)은 NH2(CH2)nNH2 구조로 n이 6이상인 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The diol (diol),
OH (CH2) nOH structure, n is 4 to 12, and diamine is NH2 (CH2) nNH2 structure, n is 6 or more, hot melt polyurethane adhesive with excellent adhesion and adhesion to hydroxyl groups .
상기 핫멜트 폴리우레탄 접착제는,
하드세그먼트와 소프트세그먼트 비율이 10 : 90 ~ 20 : 80인 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The hot-melt polyurethane adhesive,
A hot-melt polyurethane adhesive having a hard segment and a soft segment ratio of 10:90 to 20:80, which has excellent coatability and adhesion at the end of a hydroxyl group.
상기 핫멜트 폴리우레탄 접착제는,
NCO/OH가 0.85 ~ 1.00으로 합성하였을 때, MI(melt index)가 50 ~ 400인 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The hot-melt polyurethane adhesive,
When NCO / OH is synthesized from 0.85 to 1.00, MI (melt index) is characterized in that 50 to 400, a hot-melt polyurethane adhesive with excellent adhesion and adhesion to hydroxyl groups.
상기 핫멜트 폴리우레탄 접착제는,
점착부여제를 1 ~ 10 중량부가 더 첨가하되, 점착부여제는 수첨 탄화수소 수지, 로진계, 터펜계 또는 페놀계 점착부여제를 사용하는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The hot-melt polyurethane adhesive,
1 to 10 parts by weight of tackifier is added, but the tackifier is characterized by using a hydrogenated hydrocarbon resin, rosin-based, terpene-based or phenol-based tackifier, and the applicability and adhesion to the hydroxyl group as a terminal. This excellent hot melt polyurethane adhesive.
상기 핫멜트 폴리우레탄 접착제는,
산화방지제를 0.5 ~ 3 중량부를 더 첨가하되, 산화방지제는 다관능성 페놀을 사용하는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The hot-melt polyurethane adhesive,
0.5 to 3 parts by weight of an antioxidant is further added, the antioxidant is a hot-melt polyurethane adhesive excellent in coating properties and adhesion with hydroxyl groups as a terminal, characterized in that a polyfunctional phenol is used.
상기 핫멜트 폴리우레탄 접착제는,
왁스를 0.5 ~ 5 중량부를 더 첨가하되,, 왁스는 파라핀 왁스, 폴리에틸렌 왁스 또는 산화 왁스를 사용하는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.
According to claim 1,
The hot-melt polyurethane adhesive,
0.5 to 5 parts by weight of the wax is further added, wherein the wax is a paraffin wax, a polyethylene wax or a hot wax polyurethane adhesive having excellent adhesion and adhesion to a hydroxyl group, which is characterized in that a wax is used.
상기 첨가되는 첨가제는 100 ~ 200℃ 사이에서 용융시켜 혼합시켜 제조하는 것을 특징으로 하는, 수산기를 말단으로 하는 도포성 및 접착성이 우수한 핫멜트 폴리우레탄 접착제.The method according to any one of claims 10 to 12,
The additive to be added is melted between 100 ~ 200 ℃, characterized in that prepared by mixing, a hot-melt polyurethane adhesive having excellent adhesion and adhesion to the hydroxyl group.
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