JPH0860120A - Hot-melt adhesive composition - Google Patents
Hot-melt adhesive compositionInfo
- Publication number
- JPH0860120A JPH0860120A JP19411694A JP19411694A JPH0860120A JP H0860120 A JPH0860120 A JP H0860120A JP 19411694 A JP19411694 A JP 19411694A JP 19411694 A JP19411694 A JP 19411694A JP H0860120 A JPH0860120 A JP H0860120A
- Authority
- JP
- Japan
- Prior art keywords
- styrene
- melt adhesive
- resin
- adhesive composition
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 21
- 239000004831 Hot glue Substances 0.000 title claims description 24
- 229920005989 resin Polymers 0.000 claims abstract description 23
- 239000011347 resin Substances 0.000 claims abstract description 23
- 229920000359 diblock copolymer Polymers 0.000 claims abstract description 15
- 229920003051 synthetic elastomer Polymers 0.000 claims abstract description 13
- 239000005061 synthetic rubber Substances 0.000 claims abstract description 13
- 229920000428 triblock copolymer Polymers 0.000 claims abstract description 11
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 claims abstract description 6
- ROGIWVXWXZRRMZ-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1 ROGIWVXWXZRRMZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 26
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims description 20
- 239000005662 Paraffin oil Substances 0.000 abstract description 7
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 abstract description 6
- 238000013329 compounding Methods 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 5
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 abstract description 4
- YBYIRNPNPLQARY-UHFFFAOYSA-N 1H-indene Chemical compound C1=CC=C2CC=CC2=C1 YBYIRNPNPLQARY-UHFFFAOYSA-N 0.000 abstract description 4
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 abstract description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical group CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 abstract description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 2
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical compound C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 abstract 1
- 229920001971 elastomer Polymers 0.000 abstract 1
- 230000001747 exhibiting effect Effects 0.000 abstract 1
- 239000005022 packaging material Substances 0.000 abstract 1
- 239000005060 rubber Substances 0.000 abstract 1
- 229920001935 styrene-ethylene-butadiene-styrene Polymers 0.000 description 18
- 239000000853 adhesive Substances 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 11
- 238000002156 mixing Methods 0.000 description 8
- 150000003505 terpenes Chemical class 0.000 description 8
- 235000007586 terpenes Nutrition 0.000 description 8
- 150000001993 dienes Chemical class 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 239000004698 Polyethylene Substances 0.000 description 4
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 4
- 229920005601 base polymer Polymers 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- -1 polyethylene Polymers 0.000 description 4
- 229920000573 polyethylene Polymers 0.000 description 4
- 238000000576 coating method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 2
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 2
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 229920001038 ethylene copolymer Polymers 0.000 description 1
- 229920006244 ethylene-ethyl acrylate Polymers 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001083 polybutene Polymers 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920005672 polyolefin resin Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、紙おむつ，生理用品
等の衛生材料および紙器包装等に使用されるホットメル
ト接着剤組成物に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hot melt adhesive composition used for sanitary materials such as disposable diapers and sanitary products, and packaging for paper containers.
【０００２】[0002]
【従来の技術】ポリスチレン系ホットメルト接着剤がポ
リオレフィン系材料に対して優れた接着性を有すること
から、上記ホットメルト接着剤が、衛生材料用部材とし
て用いられているポリエチレンフィルムやポリプロピレ
ン不織布の接着剤として使用されている。ところで、近
年、上記ポリスチレン系ホットメルト接着剤による塗布
方法としては、スプレーやスパイラルスプレー等のよう
な低目付塗布法が主流となっている。したがって、ホッ
トメルト接着剤として、優れた接着性は維持したうえで
低粘度化が要求されている。したがって、低粘度化を図
るために様々な提案がなされ検討されている。例えば、
可塑化オイルの配合量を増加する、粘着付与樹脂の
配合量を増加する、合成ゴム成分の配合量を少なくす
る、合成ゴム成分であるスチレン−ブタジエン−スチ
レンのトリブロック共重合体に、スチレン−ブタジエン
のジブロック共重合体を添加する、という方法があげら
れる。2. Description of the Related Art Since polystyrene hot melt adhesives have excellent adhesiveness to polyolefin materials, the hot melt adhesives can be used to bond polyethylene films and polypropylene non-woven fabrics used as members for sanitary materials. Used as an agent. By the way, in recent years, as a coating method using the polystyrene-based hot melt adhesive, a low-basis weight coating method such as a spray or a spiral spray has become mainstream. Therefore, a hot melt adhesive is required to have a low viscosity while maintaining excellent adhesiveness. Therefore, various proposals have been made and studied in order to reduce the viscosity. For example,
A styrene-butadiene-styrene triblock copolymer, which is a synthetic rubber component, which contains a styrene-containing compound, which increases the compounding amount of the plasticizing oil, increases the compounding amount of the tackifying resin, and reduces the compounding amount of the synthetic rubber component, A method is to add a diblock copolymer of butadiene.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、上記各
種の低粘度化方法は、問題があり未だ満足できるもので
はない。例えば上記では、可塑化オイルの増量により
接着剤の凝集力が大幅に低下して、塗布対象が通気性フ
ィルムの場合、可塑化オイルがこの通気性フィルムから
激しく滲み出る。上記では、低温接着性が低下する。
また、上記では低温接着性が低下し、しかも合成ゴム
成分が少なく相対的に可塑化オイル分が増加するため、
上記と同様、塗布対象が通気性フィルムの場合、可塑
化オイルがこの通気性フィルムから激しく滲み出る。さ
らに、上記では粘度は低くなるが、低温接着性に劣る
点は改善されない。このように、各種の低粘度化方法に
は、以上のような欠点を有している。However, the above-mentioned various methods for reducing the viscosity have problems and are not yet satisfactory. For example, in the above, when the amount of plasticizing oil is increased, the cohesive force of the adhesive is significantly reduced, and when the application target is a breathable film, the plasticized oil exudes violently from the breathable film. In the above, low temperature adhesiveness is reduced.
Further, in the above, the low-temperature adhesiveness is lowered, and since the synthetic rubber component is small and the plasticized oil content is relatively increased,
Similarly to the above, when the application target is a breathable film, the plasticizing oil oozes out vigorously from the breathable film. Further, although the viscosity becomes low in the above, the point that the low temperature adhesiveness is poor is not improved. As described above, various methods for reducing the viscosity have the above-mentioned drawbacks.
【０００４】この発明は、このような事情に鑑みなされ
たもので、低温から高温までの広範囲な温度領域におい
て優れた接着性を有し、しかも高凝集力で優れた熱安定
性を備えた低粘度のホットメルト接着剤組成物の提供を
その目的とする。The present invention has been made in view of the above circumstances, and has excellent adhesiveness in a wide temperature range from low temperature to high temperature, and has low cohesive strength and excellent thermal stability. An object thereof is to provide a hot melt adhesive composition having a viscosity.
【０００５】[0005]
【課題を解決するための手段】上記の目的を達成するた
め、この発明のホットメルト接着剤組成物は、下記の
（Ａ）〜（Ｃ）成分を主成分とするという構成をとる。 （Ａ）スチレン−ブタジエン−スチレンのトリブロック
共重合体と、スチレン−イソプレンのジブロック共重合
体からなる合成ゴム。 （Ｂ）粘着付与樹脂。 （Ｃ）可塑化オイル。In order to achieve the above object, the hot melt adhesive composition of the present invention comprises the following components (A) to (C) as main components. (A) A synthetic rubber composed of a styrene-butadiene-styrene triblock copolymer and a styrene-isoprene diblock copolymer. (B) Tackifying resin. (C) Plasticizing oil.
【０００６】[0006]
【作用】すなわち、この発明者は、広範囲の温度領域で
の接着性，凝集力に優れた低粘度のホットメルト接着剤
を得るために一連の研究を重ねた。その結果、スチレン
−ブタジエン−スチレンのトリブロック共重合体と、上
記トリブロック共重合体の共役ジエンブロックとは異な
るブロックを有するスチレン−イソプレンのジブロック
共重合体からなる合成ゴム成分を用いると、ベースポリ
マーの分子量が低下し低粘度化が図られ、しかも互いの
欠点を補って優れた接着力および高凝集力が得られるこ
とを見いだしこの発明に到達した。なお、この発明にお
いて、「主成分とする」とは主成分のみからなる場合も
含める趣旨である。That is, the present inventor has conducted a series of studies in order to obtain a low-viscosity hot-melt adhesive having excellent adhesiveness and cohesive force in a wide temperature range. As a result, when a styrene-butadiene-styrene triblock copolymer and a synthetic rubber component comprising a styrene-isoprene diblock copolymer having a block different from the conjugated diene block of the triblock copolymer are used, The inventors have found that the molecular weight of the base polymer is lowered, the viscosity is reduced, and the defects of each other are complemented with each other to obtain excellent adhesive strength and high cohesive strength. In addition, in the present invention, the phrase “comprising a main component” is intended to include a case where the main component is included.
【０００７】つぎに、この発明を詳しく説明する。Next, the present invention will be described in detail.
【０００８】この発明のホットメルト接着剤組成物は、
特定の合成ゴム（Ａ成分）と、粘着付与樹脂（Ｂ成分）
と、可塑化オイル（Ｃ成分）を用いて得られる。The hot melt adhesive composition of the present invention comprises:
Specific synthetic rubber (A component) and tackifying resin (B component)
And a plasticizing oil (component C).
【０００９】上記特定の合成ゴム（Ａ成分）は、スチレ
ン−ブタジエン−スチレンのトリブロック共重合体（以
下「ＳＢＳ」と称す）と、スチレン−イソプレンのジブ
ロック共重合体（以下「ＳＩ」と称す）からなる。この
ように、上記トリブロック共重合体の共役ジエンブロッ
ク（ブタジエン）と上記ジブロック共重合体の共役ジエ
ンブロック（イソプレン）とが異なるものを組み合わせ
ることにより相互の優れた特性を付与することが可能と
なり目的とするホットメルト接着剤組成物を得ることが
できる。これがこの発明の最大の特徴である。上記ＳＢ
Ｓ（Ｘ）とＳＩ（Ｙ）の配合割合（Ｘ／Ｙ）は、Ｘ／Ｙ
＝９０／１０〜５／９５の範囲に設定することが好まし
い。すなわち、ＳＢＳの配合割合が９０を超える（ＳＩ
が１０未満）と、接着性に劣り低粘度化が困難となり、
逆にＳＢＳの配合割合が５未満（ＳＩが９５を超える）
では、凝集力が低下してオイル成分の滲み出しが生じる
傾向がみられるからである。また、上記ＳＢＳ中の共役
ジエンブロック（ブタジエン）の含有量がＳＢＳ全体の
１０〜９５重量％（以下「％」と略す）の範囲のもの
を、かつＳＩ中の共役ジエンブロック（イソプレン）の
含有量も１０〜９５％の範囲のものを用いることが好ま
しい。すなわち、ＳＢＳ中のブタジエンが１０％未満お
よびＳＩ中のイソプレンが１０％未満では、低温や常温
での接着力が得られ難い。また、ＳＢＳ中のブタジエン
が９５％を超え、しかもＳＩ中のイソプレンが９５％を
超えると、凝集力が低下する傾向がみられるからであ
る。The specific synthetic rubber (component A) is a styrene-butadiene-styrene triblock copolymer (hereinafter referred to as "SBS") and a styrene-isoprene diblock copolymer (hereinafter referred to as "SI"). It is called). Thus, by combining different conjugated diene blocks (butadiene) of the triblock copolymer and conjugated diene blocks (isoprene) of the diblock copolymer, it is possible to impart mutually excellent properties. The desired hot melt adhesive composition can be obtained. This is the greatest feature of this invention. SB above
The mixing ratio (X / Y) of S (X) and SI (Y) is X / Y
= 90/10 to 5/95 is preferable. That is, the mixing ratio of SBS exceeds 90 (SI
Is less than 10), the adhesiveness is poor and it becomes difficult to reduce the viscosity,
On the contrary, SBS content is less than 5 (SI exceeds 95)
Then, there is a tendency that the cohesive force decreases and the oil component exudes. Further, the content of the conjugated diene block (butadiene) in the SBS is in the range of 10 to 95% by weight (hereinafter abbreviated as “%”) of the entire SBS, and the content of the conjugated diene block (isoprene) in the SI. It is preferable to use an amount in the range of 10 to 95%. That is, if the content of butadiene in SBS is less than 10% and the content of isoprene in SI is less than 10%, it is difficult to obtain adhesive strength at low temperature or room temperature. Further, if the butadiene content in SBS exceeds 95% and the isoprene content in SI exceeds 95%, the cohesive force tends to decrease.
【００１０】さらに、Ａ成分として、トリブロック共重
合体に水素添加したＳＢＳ（ＳＥＢＳ）と、ジブロック
共重合体に水素添加したＳＩ（ＳＥＰ）を用いると、ホ
ットメルト接着剤組成物の低粘度化，高凝集力化，高接
着性に加えて熱安定性の一層の向上を図ることが可能と
なり特に好ましい。Furthermore, when SBS (SEBS) hydrogenated to the triblock copolymer and SI (SEP) hydrogenated to the diblock copolymer are used as the component A, the low viscosity of the hot melt adhesive composition is obtained. In particular, it is possible to further improve the thermal stability in addition to the increase in the heat resistance, the high cohesive force, the high adhesiveness, and the like, which is particularly preferable.
【００１１】上記Ａ成分とともに用いられる粘着付与樹
脂（Ｂ成分）としては、特に限定するものではなく従来
公知のものが用いられる。例えば、クマロン・インデン
樹脂，フェノール・ホルムアルデヒド樹脂，変性キシレ
ン樹脂，テルペン・フェノール樹脂，テルペン樹脂，水
素添加テルペン樹脂，ポリブテン，ポリイソブチレン，
石油樹脂，水素添加石油樹脂，水素添加ロジン，水素添
加ロジンエステル，スチレン樹脂等があげられる。これ
らは単独でもしくは２種以上併せて用いられる。The tackifying resin (component B) used together with the component A is not particularly limited, and a conventionally known one can be used. For example, coumarone / indene resin, phenol / formaldehyde resin, modified xylene resin, terpene / phenol resin, terpene resin, hydrogenated terpene resin, polybutene, polyisobutylene,
Examples include petroleum resin, hydrogenated petroleum resin, hydrogenated rosin, hydrogenated rosin ester, and styrene resin. These may be used alone or in combination of two or more.
【００１２】上記Ａ成分およびＢ成分とともに用いられ
る可塑化オイル（Ｃ成分）も、特に限定するものではな
く従来公知のものが用いられる。例えば、パラフィン系
オイル，ナフテン系オイル，あるいは芳香族系成分を多
量に含むオイル等があげられる。これらは単独でもしく
は２種以上併せて用いられる。The plasticizing oil (component C) used together with the above-mentioned components A and B is not particularly limited, and conventionally known ones can be used. Examples thereof include paraffin oil, naphthene oil, and oil containing a large amount of aromatic components. These may be used alone or in combination of two or more.
【００１３】この発明のホットメルト接着剤組成物に
は、上記Ａ〜Ｃ成分以外に、必要に応じて、エチレン−
酢酸ビニル共重合体、エチレン−エチルアクリレート共
重合体等のエチレン共重合体、ポリプロピレン−ポリエ
チレン共重合体、ポリプロピレン−ポリエチレン−ブテ
ン−１共重合体等のオレフィン系樹脂、また、液状ポリ
イソプレンや酸化防止剤等の他の添加剤を適宜に配合す
ることができる。In the hot melt adhesive composition of the present invention, in addition to the above components A to C, ethylene-
Olefin resin such as vinyl acetate copolymer, ethylene copolymer such as ethylene-ethyl acrylate copolymer, polypropylene-polyethylene copolymer, polypropylene-polyethylene-butene-1 copolymer, liquid polyisoprene and oxidation Other additives such as an inhibitor can be appropriately blended.
【００１４】この発明のホットメルト接着剤組成物は、
例えばＡ〜Ｃ成分および必要に応じて他の添加剤を所定
の割合に配合，混合することにより得られる。The hot melt adhesive composition of the present invention comprises:
For example, it can be obtained by mixing and mixing the components A to C and, if necessary, other additives in a predetermined ratio.
【００１５】上記配合において、Ａ〜Ｃ成分の各配合割
合は、Ａ成分１００重量部（以下「部」と略す）に対し
てＢ成分は５０〜５００部の範囲に、またＣ成分は２０
〜４００部の範囲に設定することが好ましい。すなわ
ち、各配合割合において、上記Ｂ成分の配合割合が上記
範囲を外れると、低温および常温での接着力が低下する
傾向がみられる。また、上記Ｃ成分の配合割合が上記範
囲を外れると、接着力と凝集力のバランスがとれなくな
る傾向がみられるからである。In the above blending, the respective blending ratios of the components A to C are in the range of 50 to 500 parts of the component B and 20 parts of the component C to 100 parts by weight of the component A (hereinafter abbreviated as "part").
It is preferable to set in the range of 400 parts. That is, in each compounding ratio, when the compounding ratio of the component B is out of the above range, there is a tendency that the adhesive strength at low temperature and room temperature decreases. Further, if the blending ratio of the C component is out of the above range, it tends to be difficult to balance the adhesive force and the cohesive force.
【００１６】このように、この発明のホットメルト接着
剤組成物は、トリブロック共重合体にジブロック共重合
体を配合することにより合成ゴム（Ａ成分）であるベー
スポリマーを構成するため、このベースポリマー自身の
分子量が低下してホットメルト接着剤組成物の溶融粘度
を低下させることができる。しかも、トリブロック共重
合体同士の配合に比べて相溶範囲が広くなり、単独ポリ
マーベース（ＳＢＳのみ）の有する欠点をジブロック共
重合体（ＳＩ）が補い、低温から高温にかけての優れた
接着力および高凝集力が得られるようになる。As described above, the hot melt adhesive composition of the present invention constitutes the base polymer which is the synthetic rubber (A component) by blending the diblock copolymer with the triblock copolymer. The molecular weight of the base polymer itself can be lowered to lower the melt viscosity of the hot melt adhesive composition. Moreover, the compatibility range is wide compared to the case where the triblock copolymers are blended together, and the diblock copolymer (SI) makes up for the drawbacks of the homopolymer base (SBS only), resulting in excellent adhesion from low temperature to high temperature. Force and high cohesive force are obtained.
【００１７】[0017]
【発明の効果】以上のように、この発明のホットメルト
接着剤組成物は、トリブロック共重合体であるＳＢＳ
と、ジブロック共重合体であるＳＩからなる合成ゴム
（Ａ成分）を用いている。このため、ベースポリマー自
身の分子量が低下して低粘度化が図られ、しかも互いの
欠点を補いＳＩの優れた接着力およびＳＢＳの有する優
れた凝集力を備えている。さらに、トリブロック共重合
体およびジブロック共重合体の双方とも共役ジエン部分
が水素添加されたものを用いることによって、上記各特
性の向上に加えて、一層優れた熱安定性が得られる。As described above, the hot-melt adhesive composition of the present invention is a triblock copolymer SBS.
And a synthetic rubber (component A) made of SI which is a diblock copolymer. For this reason, the molecular weight of the base polymer itself is lowered to lower the viscosity, and the two drawbacks are compensated for each other, and the excellent adhesive force of SI and the excellent cohesive force of SBS are provided. Furthermore, by using both the triblock copolymer and the diblock copolymer in which the conjugated diene moiety is hydrogenated, more excellent thermal stability can be obtained in addition to the improvement of the above respective properties.
【００１８】つぎに、実施例について比較例と併せて説
明する。Next, examples will be described together with comparative examples.
【００１９】[0019]
【実施例１〜１２、比較例１〜３】下記の表１〜表５に
示す各成分を同表に示す割合で配合し、混合した。この
ようにしてホットメルト接着剤組成物を製造した。Examples 1 to 12 and Comparative Examples 1 to 3 The components shown in Tables 1 to 5 below were blended and mixed in the proportions shown in the table. In this way, a hot melt adhesive composition was produced.
【００２０】[0020]
【表１】 ＊１：ブタジエンの含有量がＳＢＳ全体の１０％である。 ＊２：イソプレンの含有量がＳＩ全体の１０％である。 ＊３：水素添加したテルペン系樹脂。 ＊４：パラフィン系オイル。[Table 1] * 1: The content of butadiene is 10% of the whole SBS. * 2: The content of isoprene is 10% of the total SI. * 3: Hydrogenated terpene resin. * 4: Paraffin oil.
【００２１】[0021]
【表２】 ＊１：ブタジエンの含有量がＳＢＳ全体の９５％である。 ＊２：イソプレンの含有量がＳＩ全体の１０％である。 ＊３：水素添加したテルペン系樹脂。 ＊４：パラフィン系オイル。[Table 2] * 1: The content of butadiene is 95% of the total SBS. * 2: The content of isoprene is 10% of the total SI. * 3: Hydrogenated terpene resin. * 4: Paraffin oil.
【００２２】[0022]
【表３】 ＊１：ブタジエンの含有量がＳＢＳ全体の１０％である。 ＊２：イソプレンの含有量がＳＩ全体の９５％である。 ＊３：水素添加したテルペン系樹脂。 ＊４：パラフィン系オイル。[Table 3] * 1: The content of butadiene is 10% of the whole SBS. * 2: The content of isoprene is 95% of the total SI. * 3: Hydrogenated terpene resin. * 4: Paraffin oil.
【００２３】[0023]
【表４】 ＊１：ブタジエンの含有量がＳＢＳ全体の７０％で、しかも水素添加されたもの である。 ＊２：イソプレンの含有量がＳＩ全体の８０％で、しかも水素添加されたもので ある。 ＊３：水素添加したテルペン系樹脂。 ＊４：パラフィン系オイル。[Table 4] * 1: The content of butadiene is 70% of the total SBS and is hydrogenated. * 2: The content of isoprene is 80% of the total SI and is hydrogenated. * 3: Hydrogenated terpene resin. * 4: Paraffin oil.
【００２４】[0024]
【表５】 ＊１：ブタジエンの含有量がＳＢＳ全体の７０％である。 ＊２：ブタジエンの含有量がＳＢ全体の７０％である。 ＊３：スチレン−イソプレン−スチレンのトリブロック共重合体である。 ＊４：ＳＢＳの水素添加されたものである。 ＊５：ＳＩの水素添加されたものである。 ＊６：水素添加したテルペン系樹脂。 ＊７：パラフィン系オイル。[Table 5] * 1: The content of butadiene is 70% of the whole SBS. * 2: The content of butadiene is 70% of the whole SB. * 3: A styrene-isoprene-styrene triblock copolymer. * 4: SBS is hydrogenated. * 5: SI hydrogenated. * 6: Hydrogenated terpene resin. * 7: Paraffin oil.
【００２５】このようにして得られた実施例品および比
較例品のホットメルト接着剤組成物について、その粘
度，低温から高温にかけての接着力，凝集力，熱安定性
の各特性を測定し評価した。その結果を後記の表６〜表
８に示す。なお、上記特性評価の測定方法を下記に示
す。With respect to the hot melt adhesive compositions of Examples and Comparative Examples obtained in this way, their viscosity, adhesive strength from low temperature to high temperature, cohesive strength and thermal stability were measured and evaluated. did. The results are shown in Tables 6 to 8 below. In addition, the measuring method of the said characteristic evaluation is shown below.
【００２６】〔粘度〕ブルックフィールドサーモセル
（ブルックフィールド社製）を用いて測定した。[Viscosity] The viscosity was measured using a Brookfield Thermocell (manufactured by Brookfield).
【００２７】〔接着力〕紙おむつに主として使用されて
いるポリエチレンフィルムと不織布を、上記実施例品も
しくは比較例品を用いて接着した（塗布温度１４０℃，
塗布量０．０５ｇ／ｍ，ビード状）。これを２０℃雰囲
気下で２４時間放置した後、取り出して手で被着体を引
き剥がし材料破断の場合を○、界面剥離のものを×、そ
の中間を△として評価した。[Adhesive Strength] A polyethylene film and a non-woven fabric, which are mainly used in paper diapers, are adhered by using the above-mentioned example product or comparative example product (application temperature 140 ° C.,
Coating amount 0.05g / m, bead shape). After this was left in an atmosphere of 20 ° C. for 24 hours, it was taken out, the adherend was peeled off by hand, and the case of material fracture was evaluated as ◯, the case of interfacial peeling was evaluated as ×, and the middle was evaluated as Δ.
【００２８】〔凝集力〕上記接着力の測定で作製した貼
り合わせサンプルを幅２５ｍｍに切り取り、４０℃雰囲
気下、ポリエチレンフィルムに１００ｇの重りを吊る
し、重りが落下するまでの時間を測定した。[Cohesive Strength] The bonded sample prepared by the above-mentioned measurement of the adhesive strength was cut into a width of 25 mm, a 100 g weight was hung on a polyethylene film in an atmosphere of 40 ° C., and the time until the weight dropped was measured.
【００２９】〔熱安定性〕１８０℃の雰囲気下に７２時
間放置したホットメルト接着剤組成部間の色相を目視に
より判定した。そして、完全に無色あるいは白色の場合
を◎、殆ど無色あるいは白色に近い場合を○、やや着色
のある場合を△、明らかに着色のある場合を×として評
価した。[Thermal Stability] The hue between the hot-melt adhesive composition parts left for 72 hours in an atmosphere of 180 ° C. was visually evaluated. Then, the case of completely colorless or white was evaluated as ⊚, the case of almost colorless or nearly white was evaluated as ○, the case of slightly colored was evaluated as Δ, and the case of apparently colored was evaluated as ×.
【００３０】[0030]
【表６】 ＊１：単位はｃｐｓ／１６０℃である。 ＊２：単位は分である。[Table 6] * 1: The unit is cps / 160 ° C. * 2: The unit is minutes.
【００３１】[0031]
【表７】 ＊１：単位はｃｐｓ／１６０℃である。 ＊２：単位は分である。[Table 7] * 1: The unit is cps / 160 ° C. * 2: The unit is minutes.
【００３２】[0032]
【表８】 ＊１：単位はｃｐｓ／１６０℃である。 ＊２：単位は分である。[Table 8] * 1: The unit is cps / 160 ° C. * 2: The unit is minutes.
【００３３】上記表６〜表８の結果から、比較例品は、
低粘度のものが得られないか、もしくは接着力，凝集力
の少なくとも一つの特性に劣るものである。これに対し
て、実施例品は全て低粘度で、かつ接着力，凝集力およ
び熱安定性に優れている。さらに、水素添加した合成ゴ
ムを用いた実施例１０〜１２品は全ての特性に優れてい
ることはもちろん、熱安定性に特に優れていることがわ
かる。From the results of Tables 6 to 8 above, the comparative example products are
A low-viscosity product cannot be obtained, or at least one of the adhesive strength and cohesive strength is inferior. On the other hand, all the products of Examples have low viscosity and are excellent in adhesive strength, cohesive strength and thermal stability. Further, it can be seen that the products of Examples 10 to 12 using the hydrogenated synthetic rubber are excellent in not only all the characteristics but also the thermal stability.
Claims (4)
ることを特徴とするホットメルト接着剤組成物。 （Ａ）スチレン−ブタジエン−スチレンのトリブロック
共重合体と、スチレン−イソプレンのジブロック共重合
体からなる合成ゴム。 （Ｂ）粘着付与樹脂。 （Ｃ）可塑化オイル。1. A hot melt adhesive composition comprising the following components (A) to (C) as main components. (A) A synthetic rubber composed of a styrene-butadiene-styrene triblock copolymer and a styrene-isoprene diblock copolymer. (B) Tackifying resin. (C) Plasticizing oil.
ブタジエンブロックおよびジブロック共重合体中のイソ
プレンブロックが水素添加されたものである請求項１記
載のホットメルト接着剤組成物。2. The hot melt adhesive composition according to claim 1, wherein the butadiene block in the triblock copolymer as the component (A) and the isoprene block in the diblock copolymer are hydrogenated.
有量が、（Ａ）成分全体の１０〜９５重量％である請求
項１または２記載のホットメルト接着剤組成物。3. The hot melt adhesive composition according to claim 1, wherein the content of the diblock copolymer in the component (A) is 10 to 95% by weight based on the total amount of the component (A).
ブタジエンの含有量がトリブロック共重合体全体の１０
〜９５重量％であって、かつジブロック共重合体のイソ
プレンの含有量が１０〜９５重量％である請求項１〜３
のいずれか一つに記載のホットメルト接着剤組成物。4. The content of butadiene in the triblock copolymer in the component (A) is 10 based on the whole triblock copolymer.
%, And the content of isoprene in the diblock copolymer is 10 to 95% by weight.
The hot melt adhesive composition according to any one of 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19411694A JP2705904B2 (en) | 1994-08-18 | 1994-08-18 | Hot melt adhesive composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19411694A JP2705904B2 (en) | 1994-08-18 | 1994-08-18 | Hot melt adhesive composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0860120A true JPH0860120A (en) | 1996-03-05 |
| JP2705904B2 JP2705904B2 (en) | 1998-01-28 |
Family
ID=16319191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19411694A Expired - Fee Related JP2705904B2 (en) | 1994-08-18 | 1994-08-18 | Hot melt adhesive composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2705904B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002523609A (en) * | 1998-08-27 | 2002-07-30 | シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー | High Peel Strength High Fixing Power Hot Melt Adhesive Composition for Disposable |
| JP2003503552A (en) * | 1999-06-25 | 2003-01-28 | クレイトン・ポリマーズ・リサーチ・ベー・ベー | Hot melt pressure sensitive adhesive (II) |
| US7717893B2 (en) | 2004-06-04 | 2010-05-18 | The Procter & Gamble Company | Absorbent articles comprising a slow recovery elastomer |
| US7905872B2 (en) * | 2004-06-04 | 2011-03-15 | The Procter & Gamble Company | Absorbent articles comprising a slow recovery stretch laminate |
| US8419701B2 (en) | 2005-01-10 | 2013-04-16 | The Procter & Gamble Company | Absorbent articles with stretch zones comprising slow recovery elastic materials |
| WO2013099973A1 (en) * | 2011-12-29 | 2013-07-04 | 日本ゼオン株式会社 | Block copolymer composition for hot melt adhesive agent |
| WO2014034100A1 (en) * | 2012-08-27 | 2014-03-06 | 早川ゴム株式会社 | Adhesive composition and adhesive tape for laser bonding |
| CN115216258A (en) * | 2022-05-13 | 2022-10-21 | 嘉好(太仓)新材料股份有限公司 | Structural adhesive for producing low-temperature-resistant paper diapers and preparation method thereof |
| CN116218433A (en) * | 2023-03-29 | 2023-06-06 | 昆山久庆新材料科技有限公司 | Low-cost hot-melt pressure-sensitive adhesive and preparation method thereof |
-
1994
- 1994-08-18 JP JP19411694A patent/JP2705904B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002523609A (en) * | 1998-08-27 | 2002-07-30 | シエル・インターナシヨナル・リサーチ・マートスハツペイ・ベー・ヴエー | High Peel Strength High Fixing Power Hot Melt Adhesive Composition for Disposable |
| JP2003503552A (en) * | 1999-06-25 | 2003-01-28 | クレイトン・ポリマーズ・リサーチ・ベー・ベー | Hot melt pressure sensitive adhesive (II) |
| US7717893B2 (en) | 2004-06-04 | 2010-05-18 | The Procter & Gamble Company | Absorbent articles comprising a slow recovery elastomer |
| US7905872B2 (en) * | 2004-06-04 | 2011-03-15 | The Procter & Gamble Company | Absorbent articles comprising a slow recovery stretch laminate |
| US8419701B2 (en) | 2005-01-10 | 2013-04-16 | The Procter & Gamble Company | Absorbent articles with stretch zones comprising slow recovery elastic materials |
| WO2013099973A1 (en) * | 2011-12-29 | 2013-07-04 | 日本ゼオン株式会社 | Block copolymer composition for hot melt adhesive agent |
| WO2014034100A1 (en) * | 2012-08-27 | 2014-03-06 | 早川ゴム株式会社 | Adhesive composition and adhesive tape for laser bonding |
| WO2014033770A1 (en) * | 2012-08-27 | 2014-03-06 | 早川ゴム株式会社 | Adhesive composition and adhesive tape for laser bonding |
| JPWO2014034100A1 (en) * | 2012-08-27 | 2016-08-08 | 早川ゴム株式会社 | Adhesive composition and adhesive tape for laser bonding |
| CN115216258A (en) * | 2022-05-13 | 2022-10-21 | 嘉好(太仓)新材料股份有限公司 | Structural adhesive for producing low-temperature-resistant paper diapers and preparation method thereof |
| CN115216258B (en) * | 2022-05-13 | 2023-06-20 | 嘉好(太仓)新材料股份有限公司 | Structural adhesive for producing low-temperature-resistant paper diapers and preparation method thereof |
| CN116218433A (en) * | 2023-03-29 | 2023-06-06 | 昆山久庆新材料科技有限公司 | Low-cost hot-melt pressure-sensitive adhesive and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2705904B2 (en) | 1998-01-28 |
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