JP4309750B2 - Chemical-resistant adhesive tape and method for producing the same - Google Patents
Chemical-resistant adhesive tape and method for producing the same Download PDFInfo
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- JP4309750B2 JP4309750B2 JP2003405681A JP2003405681A JP4309750B2 JP 4309750 B2 JP4309750 B2 JP 4309750B2 JP 2003405681 A JP2003405681 A JP 2003405681A JP 2003405681 A JP2003405681 A JP 2003405681A JP 4309750 B2 JP4309750 B2 JP 4309750B2
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- styrene
- adhesive tape
- tackifier
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- 239000000126 substance Substances 0.000 title claims description 80
- 239000002390 adhesive tape Substances 0.000 title claims description 38
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 230000001070 adhesive effect Effects 0.000 claims description 55
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 54
- 239000000853 adhesive Substances 0.000 claims description 53
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims description 50
- 229920001971 elastomer Polymers 0.000 claims description 40
- 239000000806 elastomer Substances 0.000 claims description 40
- 239000003208 petroleum Substances 0.000 claims description 40
- 229920005989 resin Polymers 0.000 claims description 36
- 239000011347 resin Substances 0.000 claims description 36
- -1 polypropylene Polymers 0.000 claims description 28
- 125000003118 aryl group Chemical group 0.000 claims description 24
- 229920000359 diblock copolymer Polymers 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 22
- 229920001577 copolymer Polymers 0.000 claims description 20
- 230000006835 compression Effects 0.000 claims description 18
- 238000007906 compression Methods 0.000 claims description 18
- 239000007864 aqueous solution Substances 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 15
- 150000001336 alkenes Chemical class 0.000 claims description 13
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 claims description 13
- 229920001169 thermoplastic Polymers 0.000 claims description 12
- 239000004416 thermosoftening plastic Substances 0.000 claims description 12
- 239000004743 Polypropylene Substances 0.000 claims description 10
- 229920001155 polypropylene Polymers 0.000 claims description 10
- 239000010410 layer Substances 0.000 claims description 9
- 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 description 8
- 230000002378 acidificating effect Effects 0.000 claims description 8
- 229920006132 styrene block copolymer Polymers 0.000 claims description 8
- 238000000576 coating method Methods 0.000 claims description 7
- 239000012790 adhesive layer Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 5
- 238000007654 immersion Methods 0.000 claims description 5
- 239000004902 Softening Agent Substances 0.000 claims description 4
- 239000003960 organic solvent Substances 0.000 claims description 4
- VSKJLJHPAFKHBX-UHFFFAOYSA-N 2-methylbuta-1,3-diene;styrene Chemical compound CC(=C)C=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 VSKJLJHPAFKHBX-UHFFFAOYSA-N 0.000 claims 2
- 230000001568 sexual effect Effects 0.000 claims 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 33
- 239000012528 membrane Substances 0.000 description 21
- 238000001223 reverse osmosis Methods 0.000 description 21
- 229920000346 polystyrene-polyisoprene block-polystyrene Polymers 0.000 description 16
- 239000004698 Polyethylene Substances 0.000 description 15
- 239000003795 chemical substances by application Substances 0.000 description 15
- 229920000573 polyethylene Polymers 0.000 description 15
- 230000003712 anti-aging effect Effects 0.000 description 14
- 239000010734 process oil Substances 0.000 description 13
- 239000007787 solid Substances 0.000 description 13
- 238000003851 corona treatment Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 239000004563 wettable powder Substances 0.000 description 6
- XOUQAVYLRNOXDO-UHFFFAOYSA-N 2-tert-butyl-5-methylphenol Chemical compound CC1=CC=C(C(C)(C)C)C(O)=C1 XOUQAVYLRNOXDO-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000012943 hotmelt Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- 229920002633 Kraton (polymer) Polymers 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical class C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- ZNRLMGFXSPUZNR-UHFFFAOYSA-N 2,2,4-trimethyl-1h-quinoline Chemical compound C1=CC=C2C(C)=CC(C)(C)NC2=C1 ZNRLMGFXSPUZNR-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 238000007334 copolymerization reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- GNPWYHFXSMINJQ-UHFFFAOYSA-N 1,2-dimethyl-3-(1-phenylethyl)benzene Chemical compound C=1C=CC(C)=C(C)C=1C(C)C1=CC=CC=C1 GNPWYHFXSMINJQ-UHFFFAOYSA-N 0.000 description 1
- HYZJCKYKOHLVJF-UHFFFAOYSA-N 1H-benzimidazole Chemical compound C1=CC=C2NC=NC2=C1 HYZJCKYKOHLVJF-UHFFFAOYSA-N 0.000 description 1
- XGIDEUICZZXBFQ-UHFFFAOYSA-N 1h-benzimidazol-2-ylmethanethiol Chemical compound C1=CC=C2NC(CS)=NC2=C1 XGIDEUICZZXBFQ-UHFFFAOYSA-N 0.000 description 1
- KGRVJHAUYBGFFP-UHFFFAOYSA-N 2,2'-Methylenebis(4-methyl-6-tert-butylphenol) Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)O)=C1O KGRVJHAUYBGFFP-UHFFFAOYSA-N 0.000 description 1
- BYLSIPUARIZAHZ-UHFFFAOYSA-N 2,4,6-tris(1-phenylethyl)phenol Chemical compound C=1C(C(C)C=2C=CC=CC=2)=C(O)C(C(C)C=2C=CC=CC=2)=CC=1C(C)C1=CC=CC=C1 BYLSIPUARIZAHZ-UHFFFAOYSA-N 0.000 description 1
- CZNRFEXEPBITDS-UHFFFAOYSA-N 2,5-bis(2-methylbutan-2-yl)benzene-1,4-diol Chemical compound CCC(C)(C)C1=CC(O)=C(C(C)(C)CC)C=C1O CZNRFEXEPBITDS-UHFFFAOYSA-N 0.000 description 1
- BVUXDWXKPROUDO-UHFFFAOYSA-N 2,6-di-tert-butyl-4-ethylphenol Chemical compound CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 BVUXDWXKPROUDO-UHFFFAOYSA-N 0.000 description 1
- GPNYZBKIGXGYNU-UHFFFAOYSA-N 2-tert-butyl-6-[(3-tert-butyl-5-ethyl-2-hydroxyphenyl)methyl]-4-ethylphenol Chemical compound CC(C)(C)C1=CC(CC)=CC(CC=2C(=C(C=C(CC)C=2)C(C)(C)C)O)=C1O GPNYZBKIGXGYNU-UHFFFAOYSA-N 0.000 description 1
- UJAWGGOCYUPCPS-UHFFFAOYSA-N 4-(2-phenylpropan-2-yl)-n-[4-(2-phenylpropan-2-yl)phenyl]aniline Chemical compound C=1C=C(NC=2C=CC(=CC=2)C(C)(C)C=2C=CC=CC=2)C=CC=1C(C)(C)C1=CC=CC=C1 UJAWGGOCYUPCPS-UHFFFAOYSA-N 0.000 description 1
- VSAWBBYYMBQKIK-UHFFFAOYSA-N 4-[[3,5-bis[(3,5-ditert-butyl-4-hydroxyphenyl)methyl]-2,4,6-trimethylphenyl]methyl]-2,6-ditert-butylphenol Chemical compound CC1=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C(CC=2C=C(C(O)=C(C=2)C(C)(C)C)C(C)(C)C)C(C)=C1CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 VSAWBBYYMBQKIK-UHFFFAOYSA-N 0.000 description 1
- KCSOBOZCMQBPFM-UHFFFAOYSA-N 4-n,4-n-dinaphthalen-2-ylbenzene-1,4-diamine Chemical compound C1=CC(N)=CC=C1N(C=1C=C2C=CC=CC2=CC=1)C1=CC=C(C=CC=C2)C2=C1 KCSOBOZCMQBPFM-UHFFFAOYSA-N 0.000 description 1
- VRKQEIXDEZVPSY-UHFFFAOYSA-N 4-n-phenyl-4-n-propan-2-ylbenzene-1,4-diamine Chemical compound C=1C=C(N)C=CC=1N(C(C)C)C1=CC=CC=C1 VRKQEIXDEZVPSY-UHFFFAOYSA-N 0.000 description 1
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 description 1
- 239000004831 Hot glue Substances 0.000 description 1
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 description 1
- IORUEKDKNHHQAL-UHFFFAOYSA-N [2-tert-butyl-6-[(3-tert-butyl-2-hydroxy-5-methylphenyl)methyl]-4-methylphenyl] prop-2-enoate Chemical compound CC(C)(C)C1=CC(C)=CC(CC=2C(=C(C=C(C)C=2)C(C)(C)C)OC(=O)C=C)=C1O IORUEKDKNHHQAL-UHFFFAOYSA-N 0.000 description 1
- FQHQREMJHKZKAC-UHFFFAOYSA-N [3-(n-(4-aminophenyl)anilino)-2-hydroxypropyl] 2-methylprop-2-enoate Chemical compound C=1C=C(N)C=CC=1N(CC(O)COC(=O)C(=C)C)C1=CC=CC=C1 FQHQREMJHKZKAC-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 150000001556 benzimidazoles Chemical class 0.000 description 1
- FACXGONDLDSNOE-UHFFFAOYSA-N buta-1,3-diene;styrene Chemical class C=CC=C.C=CC1=CC=CC=C1.C=CC1=CC=CC=C1 FACXGONDLDSNOE-UHFFFAOYSA-N 0.000 description 1
- 238000012669 compression test Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- DECIPOUIJURFOJ-UHFFFAOYSA-N ethoxyquin Chemical compound N1C(C)(C)C=C(C)C2=CC(OCC)=CC=C21 DECIPOUIJURFOJ-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001259 photo etching Methods 0.000 description 1
- DOIRQSBPFJWKBE-UHFFFAOYSA-N phthalic acid di-n-butyl ester Natural products CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 1
- 239000005020 polyethylene terephthalate Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 229920000468 styrene butadiene styrene block copolymer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Adhesive Tapes (AREA)
- Adhesives Or Adhesive Processes (AREA)
Description
本発明は、耐酸性及び耐塩基性を有する耐薬品性粘着テープ及びその製造方法に関するものである。 The present invention relates to a chemical-resistant pressure-sensitive adhesive tape having acid resistance and base resistance and a method for producing the same.
近年、塗料や接着剤の分野において、作業性の効率向上や作業環境性の向上などの観点から、液状接着剤に替わってテープ状やシート状の粘着剤を用いて各種部品を接合することが多くなっている。 In recent years, in the field of paints and adhesives, various parts can be joined using tape-like or sheet-like adhesives instead of liquid adhesives from the viewpoint of improving work efficiency and working environment. It is increasing.
また、電気・電子分野などの業界では、製品の高性能化、高機能化、多品種化などに伴い、部品接合に使用される接着剤や粘着剤には高接着性、耐薬品性、高信頼性などの要求が高まりつつある。 In industries such as the electrical and electronic fields, high adhesiveness, chemical resistance, The demand for reliability is increasing.
特許文献１及び特許文献２には、フォトエッチング工程用粘着テープにおいて、粘着テープに耐酸・耐水性を付与するために、ポリエチレンテレフタレート、ポリエチレン、ポリ塩化ビニル、ポリプロピレンなどの合成樹脂フィルムを基材に用いた粘着テープが提案されている。 In Patent Document 1 and Patent Document 2, a synthetic resin film such as polyethylene terephthalate, polyethylene, polyvinyl chloride, or polypropylene is used as a base material in order to give acid / water resistance to the pressure-sensitive adhesive tape in the photoetching process. The adhesive tape used has been proposed.
また、特許文献３には、ポリプロピレン系樹脂及びビニル芳香族系エラストマーからなる基材にホットメルト系粘着剤を用いた粘着テープが提案されている。 Patent Document 3 proposes an adhesive tape using a hot melt adhesive on a base material made of a polypropylene resin and a vinyl aromatic elastomer.
また、特許文献４には、湿潤状態のコンクリートやモルタル面に接着するコンクリート用粘着テープにおいて、エラストマーとしてスチレン―イソプレン―スチレンブロック共重合体とタッキファイヤー及び軟和剤を主成分とした粘着テープが提案されている。 Patent Document 4 discloses a pressure-sensitive adhesive tape for adhering to wet concrete or a mortar surface, the main component of which is a styrene-isoprene-styrene block copolymer, tackifier and softener as elastomers. Proposed.
しかし、特許文献１及び特許文献２に記載の粘着テープは、使用環境上、粘着剤には耐薬品性が求められない為、粘着剤の耐薬品性については検討がされていない。 However, since the pressure-sensitive adhesives described in Patent Document 1 and Patent Document 2 are not required to have chemical resistance due to the use environment, the chemical resistance of the pressure-sensitive adhesive has not been studied.
また、特許文献３に記載の粘着テープは、粘着剤が、水添されたスチレン―ブタジエン―スチレンブロック共重合体等にタッキファイヤーが添加されたホットメルト系粘着剤である。これは基材フィルムとの層間接着力を高くするために使用されたものであり、粘着剤の詳細な検討はされていない。 The pressure-sensitive adhesive tape described in Patent Document 3 is a hot-melt pressure-sensitive adhesive in which a tackifier is added to a hydrogenated styrene-butadiene-styrene block copolymer or the like. This was used to increase the interlayer adhesion with the base film, and a detailed examination of the pressure-sensitive adhesive has not been made.
また、特許文献４に記載の粘着テープは、粘着剤の耐薬品性の詳細な検討はされていない。 In addition, the adhesive tape described in Patent Document 4 has not been studied in detail regarding the chemical resistance of the adhesive.
また、一般的に粘着テープを被着体に接着する場合、被着体が湿潤状態であると粘着テープが接着し難い問題があり、逆浸透膜などのような被着体が湿潤状態の高分子含水ゲルであるものに対しては粘着テープを仮止めすることは難しく、作業性に問題があった。また、パッキンなどの用途で使用される場合、高い圧縮応力により、粘着テープが変形してシール性が低下する（圧縮ひずみ性が劣る）問題があった。 In general, when the adhesive tape is bonded to the adherend, there is a problem that the adhesive tape is difficult to adhere if the adherend is in a wet state, and the adherend such as a reverse osmosis membrane is in a wet state. It was difficult to temporarily fix the pressure-sensitive adhesive tape to the molecular water-containing gel, and there was a problem in workability. Further, when used in applications such as packing, there is a problem that the adhesive tape is deformed due to high compressive stress and the sealing performance is lowered (compression strain is inferior).
本発明の目的は、上記課題を解決するためになされたものであり、逆浸透膜などのような被着体が湿潤状態の高分子含水ゲルに対しても良好な粘着特性及び耐薬品性を有し、かつ、優れた圧縮ひずみ性を有する耐薬品性粘着テープを提供することである。 The object of the present invention has been made to solve the above-mentioned problems, and has good adhesive properties and chemical resistance even to a polymer hydrous gel in which an adherend such as a reverse osmosis membrane is wet. It is to provide a chemical-resistant pressure-sensitive adhesive tape having excellent compressive strain.
本発明の目的を達成するために、本発明は特許請求の範囲に記載のような構成とするものである。 In order to achieve the object of the present invention, the present invention is configured as described in the claims.
すなわち、本発明は、みかけ密度０．３５〜０．５５ｋｇ／ｍ ３ のオレフィン系基材の少なくとも一方の面にエラストマー、タッキファイヤー及び軟和剤を主成分とする熱可塑性粘着剤からなる粘着剤層を設けた耐薬品性粘着テープにおいて、上記エラストマーをスチレン比１５〜１９重量％、ジブロック共重合体比３０〜７８重量％のスチレン−イソプレン−スチレンブロック共重合体のうちより選択された少なくとも１種類のエラストマーとし、上記タッキファイヤーを軟化点７０〜１１５℃のＣ５石油樹脂、Ｃ５／Ｃ９共重合石油樹脂のうちより選択された少なくとも１種類のタッキファイヤーとし、かつ、上記軟和剤を芳香族系軟和剤とし、さらに、上記エラストマー１００重量部に対して、上記タッキファイヤーを８０〜３２０重量部、かつ、上記軟和剤を５〜８０重量部配合する。 That is, the present invention is an adhesive comprising a thermoplastic adhesive mainly comprising an elastomer, a tackifier and a softener on at least one surface of an olefin-based substrate having an apparent density of 0.35 to 0.55 kg / m 3. in chemical resistance adhesive tape provided with a layer, on the Symbol elastomeric styrene ratio 15 to 19 wt%, diblock copolymer ratio 30-78 wt% styrene - isoprene - selected from among styrene block copolymer At least one elastomer is used, and the tackifier is at least one tackifier selected from C5 petroleum resin and C5 / C9 copolymer petroleum resin having a softening point of 70 to 115 ° C., and the softener is An aromatic softener is used, and the tackifier is 80 to 320 layers per 100 parts by weight of the elastomer. The amount unit, and you blending 5 to 80 parts by weight of the軟和agent.
この場合、初期のポリプロピレンに対する粘着力を９Ｎ／１０ｍｍ以上で、ｐＨ２の酸性水溶液及びｐＨ１３の塩基性水溶液に１か月間浸漬後の粘着力の変化率をそれぞれ１０％以下とする。 In this case, the adhesive strength to the initial polypropylene is 9 N / 10 mm or more, and the change rate of the adhesive strength after immersion for 1 month in an acidic aqueous solution of pH 2 and a basic aqueous solution of pH 13 is 10% or less, respectively.
また、これらの場合、本発明は、圧縮応力１．５ＭＰａにおける圧縮ひずみ率を１５〜３３％とする。 In these cases, the present invention sets the compressive strain rate at a compressive stress of 1.5 MPa to 15 to 33%.
また、耐薬品性粘着テープを製造する方法において、みかけ密度０．３５〜０．５５ｋｇ／ｍ３のオレフィン系基材の少なくとも一方の面に、スチレン比１５〜１９重量％、ジブロック共重合体比３０〜７８重量％のスチレン−イソプレン−スチレンブロック共重合体のうちより選択された少なくとも１種類のエラストマーと、軟化点７０〜１１５℃のＣ５石油樹脂、Ｃ５／Ｃ９共重合石油樹脂のうちより選択された少なくとも１種類のタッキファイヤーと、芳香族系軟和剤を主成分とし、かつ、上記エラストマー１００重量部に対して、上記タッキファイヤーが８０〜３２０重量部、かつ、上記軟和剤が５〜８０重量部配合されてなる熱可塑性粘着剤を有機溶剤に溶解した溶液を用いて、塗工、乾燥することにより、厚さ２０〜３００μｍの粘着剤層を形成する。 In the method for producing a chemical-resistant adhesive tape , a diblock copolymer having a styrene ratio of 15 to 19% by weight on at least one surface of an olefin-based substrate having an apparent density of 0.35 to 0.55 kg / m 3 the ratio 30-78 wt% styrene - isoprene - and at least one error Rasutoma over selected from among styrene block copolymer, a softening point 70 to 115 ° C. of C5 petroleum resin, a C5 / C9 copolymer petroleum resin and at least one data Kkifaiya over Uchiyori selected, composed mainly of aromatic soft wettable powder, and, with respect to the 100 parts by weight of elastomer, the tackifier is from 80 to 320 parts by weight, and the soft a thermoplastic adhesive wettable powder is formed by 5 to 80 parts by weight blended with a solution dissolved in an organic solvent, coating, followed by drying, the thickness of 20~300μm Forming an adhesive layer.
また、耐薬品性粘着テープを製造する方法において、みかけ密度０．３５〜０．５５ｋｇ／ｍ３のオレフィン系基材の少なくとも一方の面に、スチレン比１５〜１９重量％、ジブロック共重合体比３０〜７８重量％のスチレン−イソプレン−スチレンブロック共重合体のうちより選択された少なくとも１種類のエラストマーと、軟化点７０〜１１５℃のＣ５石油樹脂、Ｃ５／Ｃ９共重合石油樹脂のうちより選択された少なくとも１種類のタッキファイヤーと、芳香族系軟和剤を主成分とし、かつ、上記エラストマー１００重量部に対して、上記タッキファイヤーが８０〜３２０重量部、かつ、上記軟和剤が５〜８０重量部配合されてなる熱可塑性粘着剤を加熱溶融させて塗工することにより、厚さ２０〜３００μｍの粘着剤層を形成する。 In the method for producing a chemical-resistant adhesive tape , a diblock copolymer having a styrene ratio of 15 to 19% by weight on at least one surface of an olefin-based substrate having an apparent density of 0.35 to 0.55 kg / m 3 the ratio 30-78 wt% styrene - isoprene - and at least one error Rasutoma over selected from among styrene block copolymer, a softening point 70 to 115 ° C. of C5 petroleum resin, a C5 / C9 copolymer petroleum resin and at least one data Kkifaiya over Uchiyori selected, composed mainly of aromatic soft wettable powder, and, with respect to the 100 parts by weight of elastomer, the tackifier is from 80 to 320 parts by weight, and the soft A thermoplastic pressure-sensitive adhesive containing 5 to 80 parts by weight of a summing agent is heated and melted to form a pressure-sensitive adhesive layer having a thickness of 20 to 300 μm.
以上、説明したように、本発明の耐薬品性粘着テープは、みかけ密度０．３５〜０．５５ｋｇ／ｍ ３ のオレフィン系基材の少なくとも一方の面にエラストマー、タッキファイヤー及び軟和剤を主成分とする熱可塑性粘着剤からなる粘着剤層を設けた耐薬品性粘着テープにおいて、上記エラストマーがスチレン比１５〜１９重量％、ジブロック共重合体比３０〜７８重量％のスチレン−イソプレン−スチレンブロック共重合体のうちより選択された少なくとも１種類のエラストマーであり、上記タッキファイヤーが軟化点７０〜１１５℃のＣ５石油樹脂、Ｃ５／Ｃ９共重合石油樹脂のうちより選択された少なくとも１種類のタッキファイヤーであり、かつ、上記軟和剤が芳香族系軟和剤であり、さらに、上記エラストマー１００重量部に対して、上記タッキファイヤーが８０〜３２０重量部、かつ、上記軟和剤が５〜８０重量部配合されてなるから、湿潤状態の逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れている。 As described above, the chemical-resistant pressure-sensitive adhesive tape of the present invention mainly comprises an elastomer, a tackifier and a softener on at least one surface of an olefin-based substrate having an apparent density of 0.35 to 0.55 kg / m 3. in the thermoplastic chemical-resistant adhesive tape an adhesive layer provided comprising the pressure-sensitive adhesive to a component, the upper Symbol elastomer styrene ratio 15 to 19 wt%, diblock copolymer ratio 30-78 wt% styrene - isoprene - At least one elastomer selected from among styrene block copolymers, wherein the tackifier has at least one selected from C5 petroleum resin and C5 / C9 copolymerized petroleum resin having a softening point of 70 to 115 ° C. And the softener is an aromatic softener, and further 100 parts by weight of the elastomer. Since the tackifier is blended in an amount of 80 to 320 parts by weight and the softening agent is blended in an amount of 5 to 80 parts by weight , it is excellent in wet reverse osmosis membrane adhesion, chemical resistance and compressive strain.
この場合、初期のポリプロピレンに対する粘着力が９Ｎ／１０ｍｍ以上で、ｐＨ２の酸性水溶液及びｐＨ１３の塩基性水溶液に１か月間浸漬後の粘着力の変化率がそれぞれ１０％以下であるから、湿潤状態の逆浸透膜接着性及び耐薬品性に優れている。 In this case, since the initial adhesive strength with respect to polypropylene is 9 N / 10 mm or more and the rate of change in adhesive strength after immersion for 1 month in an acidic aqueous solution of pH 2 and a basic aqueous solution of pH 13 is 10% or less, respectively, Excellent reverse osmosis membrane adhesion and chemical resistance.
また、これらの場合、圧縮応力１．５ＭＰａにおける圧縮ひずみ率が１５〜３３％であるから、圧縮ひずみ性に優れている。 Moreover, in these cases, since the compressive strain rate at a compressive stress of 1.5 MPa is 15 to 33%, the compressive strain property is excellent.
また、本発明の耐薬品性粘着テープを製造する方法は、みかけ密度０．３５〜０．５５ｋｇ／ｍ３のオレフィン系基材の少なくとも一方の面に、スチレン比１５〜１９重量％、ジブロック共重合体比３０〜７８重量％のスチレン−イソプレン−スチレンブロック共重合体のうちより選択された少なくとも１種類のエラストマーと、軟化点７０〜１１５℃のＣ５石油樹脂、Ｃ５／Ｃ９共重合石油樹脂のうちより選択された少なくとも１種類のタッキファイヤーと、芳香族系軟和剤を主成分とし、かつ、上記エラストマー１００重量部に対して、上記タッキファイヤーが８０〜３２０重量部、かつ、上記軟和剤が５〜８０重量部配合されてなる熱可塑性粘着剤を有機溶剤に溶解した溶液を用いて、塗工、乾燥することにより、厚さ２０〜３００μｍの粘着剤層を形成するから、湿潤状態の逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れた耐薬品性粘着テープを得ることができる。 Moreover, the method for producing the chemical-resistant pressure-sensitive adhesive tape of the present invention has a styrene ratio of 15 to 19% by weight, diblock on at least one surface of an olefin-based substrate having an apparent density of 0.35 to 0.55 kg / m 3. copolymerization ratio 30-78 wt% styrene - isoprene - and at least one error Rasutoma over selected from among styrene block copolymer, a softening point 70 to 115 ° C. of C5 petroleum resin, C5 / C9 copolymer and at least one data Kkifaiya over selected from among petroleum resin, as a main component an aromatic soft wettable powder, and, with respect to the 100 parts by weight of elastomer, the tackifier is from 80 to 320 parts by weight, and , a thermoplastic adhesive above軟和agent is formed by 5 to 80 parts by weight blended with a solution dissolved in an organic solvent, coating, followed by drying, the thickness 20~300μ Since forming the pressure-sensitive adhesive layer, it is possible to obtain the reverse osmosis membrane adhesion in the wet state, excellent chemical resistance and compressive strain resistance and the chemical resistance adhesive tape.
また、本発明の耐薬品性粘着テープを製造する方法は、みかけ密度０．３５〜０．５５ｋｇ／ｍ ３ のオレフィン系基材の少なくとも一方の面に、スチレン比１５〜１９重量％、ジブロック共重合体比３０〜７８重量％のスチレン−イソプレン−スチレンブロック共重合体のうちより選択された少なくとも１種類のエラストマーと、軟化点７０〜１１５℃のＣ５石油樹脂、Ｃ５／Ｃ９共重合石油樹脂のうちより選択された少なくとも１種類のタッキファイヤーと、芳香族系軟和剤を主成分とし、かつ、上記エラストマー１００重量部に対して、上記タッキファイヤーが８０〜３２０重量部、かつ、上記軟和剤が５〜８０重量部配合されてなる熱可塑性粘着剤を加熱溶融させて塗工することにより、厚さ２０〜３００μｍの粘着剤層を形成するから、湿潤状態の逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れた耐薬品性粘着テープを得ることができる。 In addition, the method for producing the chemical-resistant adhesive tape of the present invention has a styrene ratio of 15 to 19% by weight, diblock on at least one surface of an olefin-based substrate having an apparent density of 0.35 to 0.55 kg / m 3. copolymerization ratio 30-78 wt% styrene - isoprene - and at least one error Rasutoma over selected from among styrene block copolymer, a softening point 70 to 115 ° C. of C5 petroleum resin, C5 / C9 copolymer and at least one data Kkifaiya over selected from among petroleum resin, as a main component an aromatic soft wettable powder, and, with respect to the 100 parts by weight of elastomer, the tackifier is from 80 to 320 parts by weight, and Whether a 20 to 300 μm thick adhesive layer is formed by heating and melting a thermoplastic adhesive containing 5 to 80 parts by weight of the above-mentioned softener . Thus, a chemical-resistant adhesive tape excellent in wet reverse osmosis membrane adhesion, chemical resistance and compressive strain can be obtained.
本発明者らは、種々検討を重ねた結果、スチレン比１５〜１９重量％、ジブロック共重合体比３０〜７８重量％のスチレン−イソプレン−スチレンブロック共重合体のうちより選択された少なくとも１種類のエラストマーと、軟化点７０〜１１５℃のＣ５石油樹脂、Ｃ５／Ｃ９共重合石油樹脂のうちより選択された少なくとも１種類のタッキファイヤーと、芳香族系軟和剤を主成分とし、かつ、上記エラストマー１００重量部に対して、上記タッキファイヤーが８０〜３２０重量部、かつ、上記軟和剤が５〜８０重量部配合されてなる熱可塑性粘着剤からなる粘着剤層をみかけ密度０．３５〜０．５５ｋｇ／ｍ３のオレフィン系基材の少なくとも一方の面に設けることにより、初期のポリプロピレンに対する粘着力が９Ｎ／１０ｍｍ以上で、ｐＨ２の酸性水溶液及びｐＨ１３の塩基性水溶液に１か月間浸漬後の粘着力の変化率がそれぞれ１０％以下の耐薬品性粘着テープを製作することができた。 The present inventors have found that the results of repeated various studies, styrene ratio 15-19 wt%, diblock copolymer ratio 30-78 wt% styrene - isoprene - at least selected from among styrene block copolymer major and one error Rasutoma over, softening point 70 to 115 ° C. of C5 petroleum resin, and at least one data Kkifaiya over selected from among C5 / C9 copolymer petroleum resin, an aromatic soft wettable powder And an adhesive layer made of a thermoplastic adhesive in which 80 to 320 parts by weight of the tackifier and 5 to 80 parts by weight of the softener are blended with respect to 100 parts by weight of the elastomer. By providing it on at least one surface of an olefin-based substrate having a density of 0.35 to 0.55 kg / m 3, the adhesive strength to the initial polypropylene is 9 N / 10 mm or more, A chemical-resistant adhesive tape having a change rate of adhesive strength of 10% or less after immersion in an acidic aqueous solution of pH 2 and a basic aqueous solution of pH 13 for 1 month could be produced.
ここで使用されるオレフィン系基材としては、耐薬品性の高い発泡ポリエチレンビーズを連続シート状に押出成形した発泡シートや中空粒子をオレフィンに混練し、シート化したオレフィン系基材にコロナ処理を施したものが使用される。 As the olefinic base material used here, a foamed sheet or hollow particles obtained by extruding foamed polyethylene beads with high chemical resistance into a continuous sheet shape is kneaded with olefin, and corona treatment is applied to the sheeted olefinic base material. The one given is used.
本発明に使用されるオレフィン系基材は、みかけ密度が０．３５〜０．５５ｋｇ／ｍ３の範囲にある。この場合、基材のみかけ密度が０．３５ｋｇ／ｍ３未満である場合には、耐薬品性粘着テープの圧縮ひずみ率が高くなり、シール性が低下する。また、みかけ密度が０．５５ｋｇ／ｍ３を超えると、粘着テープの加工性を低下させる恐れがある。耐薬品性粘着テープの好ましい圧縮ひずみ率は、１．５ＭＰａの圧縮応力を耐薬品性粘着テープにかけたとき、１５〜３３％の範囲の低圧縮ひずみ率を示すものが好ましい。 The olefin base material used in the present invention has an apparent density in the range of 0.35 to 0.55 kg / m 3 . In this case, when the apparent density of the base material is less than 0.35 kg / m 3 , the compressive strain rate of the chemical-resistant pressure-sensitive adhesive tape is increased and the sealing performance is lowered. Moreover, when the apparent density exceeds 0.55 kg / m 3 , the processability of the adhesive tape may be reduced. The preferable compressive strain rate of the chemical resistant pressure-sensitive adhesive tape is preferably one exhibiting a low compressive strain rate in the range of 15 to 33% when a compressive stress of 1.5 MPa is applied to the chemical resistant pressure sensitive adhesive tape.
また、本発明において使用されるエラストマーは、スチレン比１５〜１９重量％、ジブロック共重合体比３０〜７８重量％のスチレン−イソプレン−スチレンブロック共重合体である。具体的には、日本ゼオン社製の商品名クインタック３４３３Ｎ、クインタック３５２０、クインタック３４５０、シェル化学社製の商品名カリフレックスＴＲ１１０７、クレイトンＤ−１１１２Ｐ、クレイトンＤ−ＫＸ４０６ＣＰ、クレイトンＤ−１１１３、クレイトンＤ−１１１３Ｐ、クレイトンＤ−１１１２、クレイトンＤ−１１１７、クレイトンＤ−ＫＸ４０６などが挙げられる。 The elastomer used in the present invention is a styrene-isoprene-styrene block copolymer having a styrene ratio of 15 to 19% by weight and a diblock copolymer ratio of 30 to 78% by weight. Specifically, trade names Quintac 3433N, Quintac 3520, Quintac 3450, trade names Califlex TR1107, manufactured by Zeon Corporation, Kraton D-1112P, Kraton D-KX406CP, Kraton D-1113, Examples include Clayton D-1113P, Clayton D-1112, Clayton D-1117, and Clayton D-KX406.
スチレン−イソプレン−スチレンブロック共重合体のスチレン比が１５重量％未満の場合には、凝集力の低下を招き、耐熱性を低下させる恐れがある。また、スチレン比が１９重量％超えると、凝集力が高くなり、粘着力の低下や湿潤状態の被着体への接着力の低下を招く恐れがある。 When the styrene ratio of the styrene-isoprene-styrene block copolymer is less than 15% by weight, the cohesive force is lowered and the heat resistance may be lowered. On the other hand, when the styrene ratio exceeds 19% by weight, the cohesive force is increased, which may cause a decrease in adhesive strength and a decrease in adhesive strength to a wet adherend.
また、スチレン−イソプレン−スチレンブロック共重合体のジブロック共重合体比が３０重量％未満である場合には、粘着力の低下を招く恐れがある。また、ジブロック共重合体比が７８重量％を超えると、凝集力の低下を招く恐れがある。 Moreover, when the diblock copolymer ratio of the styrene-isoprene-styrene block copolymer is less than 30% by weight, the adhesive force may be lowered. On the other hand, if the diblock copolymer ratio exceeds 78% by weight, the cohesive force may be lowered.
また、本発明において使用されるタッキファイヤーは、具体的には、日本ゼオン社製の商品名クイントンＢ１７０、クイントンＲ１００、クイントンＭ１００、クイントンＦ１００、クイントンＡ１００、クイントンＫ１００、クイントンＣ２００Ｓ、クイントンＣ２００Ｈ、クイントンＣ２１０、クイントンＮ１８０、クイントンＵ１８５、クイントンＵ１９０、クイントンＴＭ２０１、クイントンＳ１００、クイントンＴＪ３０２、クイントンＤ１００、クイントンＥ２００ＳＮ、クイントンＤ２００、クイントンＮ２９５、クイントンＧ１００、クイントンＧ１１０、クイントンＧ１１５などが挙げられる。なお、上記したタッキファイヤーは、単独もしくは２種類以上で使用される。 The tackifiers used in the present invention are specifically trade names Quinton B170, Quinton R100, Quinton M100, Quinton F100, Quinton A100, Quinton K100, Quinton C200S, Quinton C200H, Quinton C210 manufactured by Nippon Zeon. , Quinton N180, Quinton U185, Quinton U190, Quinton TM201, Quinton S100, Quinton TJ302, Quinton D100, Quinton E200SN, Quinton D200, Quinton N295, Quinton G100, Quinton G110, Quinton G115 and the like. In addition, the above-mentioned tackifier is used individually or in two or more types.
また、本発明に粘着力を向上させる目的で使用するタッキファイヤーは、軟化点が７０〜１１５℃のＣ５石油樹脂、Ｃ５／Ｃ９共重合石油樹脂のうちより選択された少なくとも１種類のタッキファイヤーである。この場合、軟化点が７０℃未満である場合には、凝集力の低下を招く恐れがある。また、軟化点が１１５℃を超えると、粘着力の低下を招く恐れがある。 The tackifier used for the purpose of improving the adhesive strength in the present invention is at least one tackifier selected from C5 petroleum resin and C5 / C9 copolymer petroleum resin having a softening point of 70 to 115 ° C. is there. In this case, when the softening point is less than 70 ° C., the cohesive force may be reduced. On the other hand, if the softening point exceeds 115 ° C., the adhesive strength may be reduced.
また、エラストマー１００重量部に対するタッキファイヤーの配合量が８０重量部未満である場合には、十分な粘着力を出すことが出来ず、３２０重量部を超えると、粘着力の低下を招く恐れがある。 Moreover, when the amount of the tackifier based on 100 parts by weight of the elastomer is less than 80 parts by weight, sufficient adhesive strength cannot be obtained, and when it exceeds 320 parts by weight, the adhesive force may be reduced. .
また、ここで使用される芳香族系軟和剤は、具体的には、出光興産社製の商品名ダイアナプロセスオイルＰＸ−３２、ＰＸ−９０、ＰＷ−３２、ＰＷ−９０、ＰＷ−３８０、ＰＳ−３２、ＰＳ−９０、ＮＳ−２４、ＮＳ−１００、ＮＳ−９０Ｓ、ＮＭ−２６、ＮＭ−２８０、ＮＰ−２４、ＡＣ−１２、ＡＣ−４６０、ＡＨ−１６、ＡＨ−５８や新日本石油社製ハイゾールＳＡＳ−２９６、ハイゾールＳＡＳ−ＬＨなどが挙げられる。 In addition, the aromatic softeners used here are specifically trade names Diana Process Oil PX-32, PX-90, PW-32, PW-90, PW-380, manufactured by Idemitsu Kosan Co., Ltd. PS-32, PS-90, NS-24, NS-100, NS-90S, NM-26, NM-280, NP-24, AC-12, AC-460, AH-16, AH-58 and New Japan Examples include Hyzol SAS-296, Hyzol SAS-LH manufactured by Petroleum Corporation.
また、本発明に使用する芳香族系軟和剤の配合は、エラストマー１００重量部に対して、軟和剤が５〜８０重量部である。この場合、軟和剤の配合量が５重量部未満であると、タックや粘着力の低下を招く恐れがあり、８０重量部を超えると、凝集力の低下を招く恐れがある。 The blending of the aromatic softener used in the present invention is 5 to 80 parts by weight of the softener with respect to 100 parts by weight of the elastomer. In this case, if the blending amount of the softening agent is less than 5 parts by weight, the tack and the adhesive strength may be reduced, and if it exceeds 80 parts by weight, the cohesive force may be reduced.
また、耐劣化性を付与する目的で、フェノール系、アミン系、ベンズイミダゾール系などの老化防止剤をエラストマー中に添加することができる。 In addition, for the purpose of imparting deterioration resistance, an anti-aging agent such as phenol, amine or benzimidazole can be added to the elastomer.
上記した老化防止剤としては、フェノール系では２，６−ジ−ｔ−ブチル−４−メチルフェノール、２，６−ジ−ｔ−ブチル−４−エチルフェノール、スチレン化フェノール、２，５−ジ−ｔ−ブチルハイドロキノン、２，５−ジ−ｔ−アミルハイドロキノン、２，２−メチレンビス（４−メチル−６−ｔ−ブチルフェノール）、２，２−メチレンビス（４−エチル−６−ｔ−ブチルフェノール）、４，４−チオビス（６−ｔ−ブチル−３−メチルフェノール）４，４−ブチリデンビス−（３−メチル−６−ｔ−ブチルフェノール）、１，３，５−トリメチル−２，４，６−トリス（３，５−ジ−ｔ−ブチル−４−ヒドロキシベンジル）ベンゼン、テトラキス−〔メチレン−３−（３，５−ジ−ｔ−ブチル−４−ヒドロキシフェニル）プロピオネート〕メタン、２−ｔ−ブチル−６−（３−ｔ−ブチル−５−メチル−２−ヒドロキシベンジル）−４−メチルフェニルアクリレート、ｎ−オクタデシル−３−（４−ヒドロキシ−３，５−ジ−ｔ−ブチルフェニル）プロピオネートなどが挙げられ、アミン系としては、ポリ（２，２，４−トリメチル−１，２−ジヒドロキノリン）、６−エトキシ−１，２−ジヒドロ−２，２，４−トリメチルキノリン、フェニル−α−ナフチルアミン、アルキル化ジフェニルアミン、オクチル化ジフェニルアミン、４，４−ビス（α，α−ジメチルベンジル）ジフェニルアミン、Ｎ，Ｎ−ジ−β−ナフチル−ｐ−フェニレンジアミン、Ｎ−フェニル−Ｎ−イソプロピル−ｐ−フェニレンジアミン、Ｎ−フェニル−Ｎ−（１，３−ジメチルブチル）−ｐ−フェニレンジアミン、ｐ−（ｐ−トルエンスルホニルアミド）ジフェニルアミン、Ｎ−（３−メタクリロイルオキシ−２−ヒドロキシプロピル）−Ｎ−フェニル−ｐ−フェニレンジアミンなどが挙げられ、ベンズイミダゾール系としては、２−メルカプトベンズイミダゾール、２−メルカプトメチルベンズイミダゾール、などが挙げられる。 As the above-mentioned anti-aging agent, 2,6-di-t-butyl-4-methylphenol, 2,6-di-t-butyl-4-ethylphenol, styrenated phenol, 2,5-diphenol are used in the case of phenol. -T-butylhydroquinone, 2,5-di-t-amylhydroquinone, 2,2-methylenebis (4-methyl-6-t-butylphenol), 2,2-methylenebis (4-ethyl-6-t-butylphenol) 4,4-thiobis (6-tert-butyl-3-methylphenol) 4,4-butylidenebis- (3-methyl-6-tert-butylphenol), 1,3,5-trimethyl-2,4,6- Tris (3,5-di-tert-butyl-4-hydroxybenzyl) benzene, tetrakis- [methylene-3- (3,5-di-tert-butyl-4-hydroxyphenyl) propiyl Nate] methane, 2-t-butyl-6- (3-t-butyl-5-methyl-2-hydroxybenzyl) -4-methylphenyl acrylate, n-octadecyl-3- (4-hydroxy-3,5- Di-t-butylphenyl) propionate and the like. Examples of amines include poly (2,2,4-trimethyl-1,2-dihydroquinoline), 6-ethoxy-1,2-dihydro-2,2, 4-trimethylquinoline, phenyl-α-naphthylamine, alkylated diphenylamine, octylated diphenylamine, 4,4-bis (α, α-dimethylbenzyl) diphenylamine, N, N-di-β-naphthyl-p-phenylenediamine, N -Phenyl-N-isopropyl-p-phenylenediamine, N-phenyl-N- (1,3-dimethylbutyl) -p-ph And enylenediamine, p- (p-toluenesulfonylamide) diphenylamine, N- (3-methacryloyloxy-2-hydroxypropyl) -N-phenyl-p-phenylenediamine, and the like. As the benzimidazole series, 2-mercaptobenz Examples include imidazole and 2-mercaptomethylbenzimidazole.
また、本発明の耐薬品性粘着テープは、上記エラストマー、上記タッキファイヤー及び上記軟和剤を主成分とする熱可塑性粘着剤をトルエン、酢酸エチルなどの汎用有機溶剤に溶解させ、コンマコーターなどによって、オレフィン系基材の少なくとも一方の面に塗工し、乾燥することにより、厚さ２０〜３００μｍの粘着剤層を形成することで容易に製造することができる。 The chemical-resistant adhesive tape of the present invention is obtained by dissolving a thermoplastic adhesive mainly composed of the elastomer, the tackifier and the softener in a general-purpose organic solvent such as toluene or ethyl acetate, and using a comma coater or the like. It can be easily manufactured by forming a pressure-sensitive adhesive layer having a thickness of 20 to 300 μm by coating on at least one surface of the olefin-based substrate and drying.
また、本発明の耐薬品性粘着テープは、上記エラストマー、上記タッキファイヤー及び上記軟和剤を主成分とする熱可塑性粘着剤を加熱、溶融してカレンダー、ホットメルトコーターなどで、オレフィン基材の少なくとも一方の面に塗工して、厚さ２０〜３００μｍの粘着剤層を形成することで容易に製造することができる。耐薬品性粘着テープの粘着剤層の厚さが２０μｍ未満の場合、安定した粘着特性を得るのが困難であり、粘着剤層の厚さが３００μｍを超えると、粘着力が低下する恐れがある。 Further, the chemical-resistant adhesive tape of the present invention is obtained by heating and melting the thermoplastic adhesive mainly composed of the elastomer, the tackifier, and the softener, and using a calender, a hot melt coater, etc. It can be easily manufactured by coating on at least one surface and forming an adhesive layer having a thickness of 20 to 300 μm. When the thickness of the pressure-sensitive adhesive layer of the chemical-resistant pressure-sensitive adhesive tape is less than 20 μm, it is difficult to obtain stable pressure-sensitive adhesive properties, and when the thickness of the pressure-sensitive adhesive layer exceeds 300 μm, the adhesive strength may be reduced. .
また、本発明の耐薬品性粘着テープは、その耐薬品性の指標として初期のポリプロピレンに対する粘着力が９Ｎ／１０ｍｍ以上で、ｐＨ２の酸性水溶液及びｐＨ１３の塩基性水溶液にそれぞれ１か月間浸漬後の粘着力の変化率が１０％以下であることが望ましい。 In addition, the chemical-resistant adhesive tape of the present invention has an initial adhesive strength of 9 N / 10 mm or more as an index of chemical resistance, and is immersed in an acidic aqueous solution of pH 2 and a basic aqueous solution of pH 13 for 1 month. It is desirable that the change rate of the adhesive force is 10% or less.
初期のポリプロピレンに対する粘着力が９Ｎ／１０ｍｍ未満では、十分なシール性が得られない恐れがあるため、好ましくない。また、粘着力の変化率が10％を超えると、粘着剤が薬品によって劣化している恐れがあるため、好ましくない。 If the initial adhesive strength with respect to polypropylene is less than 9 N / 10 mm, there is a possibility that sufficient sealability may not be obtained. Further, if the rate of change in adhesive strength exceeds 10%, the adhesive may be degraded by chemicals, which is not preferable.
本発明の耐薬品性粘着テープは、その用途が耐薬品性、湿潤状態の被着体への接着及び低圧縮ひずみ性を要求される限り特に限定されない。 The chemical resistant pressure-sensitive adhesive tape of the present invention is not particularly limited as long as its use is required to have chemical resistance, adhesion to a wet adherend and low compressive strain.
本発明の耐薬品性粘着テープ及びその製造方法について、実施例によって具体的に説明する。但し、本発明の耐薬品性粘着テープ及びその製造方法は、これに限定されるものではない。なお、本発明の実施例及び具体例の記述中における「部」は重量部を表す。 The chemical-resistant pressure-sensitive adhesive tape of the present invention and the production method thereof will be specifically described with reference to examples. However, the chemical-resistant pressure-sensitive adhesive tape of the present invention and the production method thereof are not limited to this. In the description of the examples and specific examples of the present invention, “parts” represents parts by weight.
［実施例１］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３４５０（スチレン比１９重量％、ジブロック共重合体比３０重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５石油樹脂クイントンＢ１７０（軟化点７０℃）８０部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ４０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．３５ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に５０μｍになるように塗工して、１１０℃で３分間乾燥して、耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 1]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quinac 3450 (styrene ratio 19% by weight, diblock copolymer ratio 30% by weight) manufactured by Nippon Zeon Co., Ltd. As a tackifier, C5 petroleum resin manufactured by Nippon Zeon Co., Ltd. Composition comprising 80 parts of Quinton B170 (softening point 70 ° C.), 40 parts of aromatic softener Diana Process Oil NS-90S manufactured by Idemitsu Kosan Co., Ltd. and 1 part of anti-aging agent Irganox # 1010 manufactured by Ciba Specialty Chemicals Was applied to a polyethylene substrate (700 μm thickness) with an apparent density of 0.35 kg / m 3 , which was uniformly dissolved in toluene, and a solid content of 60% by weight. And dried at 110 ° C. for 3 minutes to obtain a chemical-resistant adhesive tape. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［実施例２］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３４５０（スチレン比１９重量％、ジブロック共重合体比３０重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＧ１１５（軟化点１１５℃）８０部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ８０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．３５ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に５０μｍになるように塗工して、１１０℃で３分間乾燥して、耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 2]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3450 (19% by weight of styrene, 30% by weight of diblock copolymer) manufactured by Nippon Zeon Co., Ltd., C5 / C9 manufactured by Nippon Zeon Co., Ltd. as a tackifier. Copolymer Petroleum Resin Quinton G115 (softening point 115 ° C.) 80 parts, Idemitsu Kosan Co., Ltd. aromatic softener Diana Process Oil NS-90S 80 parts and Ciba Specialty Chemicals Co., Ltd. anti-aging agent Irganox # 1010 1 part An adhesive solution having a solid content of 60% by weight is uniformly dissolved in toluene so that a pressure-sensitive adhesive solution having a solid content of 60% is 50 μm on a polyethylene substrate (700 μm thickness) having an apparent density of 0.35 kg / m 3. It was coated and dried at 110 ° C. for 3 minutes to obtain a chemical resistant adhesive tape. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［実施例３］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３５２０（スチレン比１５重量％、ジブロック共重合体比７８重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）８０部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ５部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．５５ｋｇ／ｍ３のポリエチレン基材（１０００μｍ厚）に５０μｍになるように塗工して、１１０℃で３分間乾燥して、耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 3]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3520 (styrene ratio 15% by weight, diblock copolymer ratio 78% by weight) manufactured by Nippon Zeon Co., Ltd. As a tackifier, C5 / C9 manufactured by Nippon Zeon Co., Ltd. Copolymer Petroleum Resin Quinton C200S (softening point 96 ° C.) 80 parts, Idemitsu Kosan Co., Ltd. aromatic softener Diana Process Oil NS-90S 5 parts and Ciba Specialty Chemicals Co., Ltd. anti-aging agent Irganox # 1010 1 part An adhesive solution having a solid content of 60% by weight was uniformly dissolved in toluene so that the pressure-sensitive adhesive solution was 50 μm on a polyethylene substrate (1000 μm thickness) having an apparent density of 0.55 kg / m 3 subjected to corona treatment. It was coated and dried at 110 ° C. for 3 minutes to obtain a chemical resistant adhesive tape. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［実施例４］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３５２０（スチレン比１５重量％、ジブロック共重合体比７８重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５石油樹脂クイントンＮ１８０（軟化点８０℃）４０部、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）４０部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ４０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．５０ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に５０μｍになるように塗工して、１１０℃で３分間乾燥して、耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 4]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3520 (styrene ratio 15% by weight, diblock copolymer ratio 78% by weight) manufactured by Nippon Zeon Co., Ltd., C5 petroleum resin manufactured by Nippon Zeon Co., Ltd. as a tackifier Quinton N180 (softening point 80 ° C.) 40 parts, Nippon Zeon C5 / C9 copolymer petroleum resin Quinton C200S (softening point 96 ° C.) 40 parts, Idemitsu Kosan aromatic softener Diana Process Oil NS-90S 40 A composition comprising 1 part by weight and an anti-aging agent Irganox # 1010 manufactured by Ciba Specialty Chemicals Co., Ltd. was uniformly dissolved in toluene, and an adhesive solution having a solid content of 60% by weight was subjected to a corona treatment and an apparent density of 0. by coating so as to 50μm polyethylene substrate of 50kg / m 3 (700μm thick) And dried at 110 ° C. for 3 minutes to obtain a chemical-resistant adhesive tape. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［実施例５］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３５２０（スチレン比１５重量％、ジブロック共重合体比７８重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）３２０部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ４０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．５０ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に２０μｍになるように塗工して、１１０℃で３分間乾燥して、耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 5]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3520 (styrene ratio 15% by weight, diblock copolymer ratio 78% by weight) manufactured by Nippon Zeon Co., Ltd. As a tackifier, C5 / C9 manufactured by Nippon Zeon Co., Ltd. 320 parts of copolymerized petroleum resin Quinton C200S (softening point 96 ° C.), 40 parts of aromatic softener Diana Process Oil NS-90S manufactured by Idemitsu Kosan Co., Ltd. and 1 part of anti-aging agent Irganox # 1010 manufactured by Ciba Specialty Chemicals An adhesive solution having a solid content of 60% by weight is uniformly dissolved in toluene so that a pressure-sensitive adhesive solution having a solid content of 60% is 20 μm on a polyethylene substrate (700 μm thickness) having an apparent density of 0.50 kg / m 3 subjected to corona treatment. It was coated and dried at 110 ° C. for 3 minutes to obtain a chemical resistant adhesive tape. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［実施例６］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３５２０（スチレン比１５重量％、ジブロック共重合体比７８重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５石油樹脂クイントンＮ１８０（軟化点８０℃）３２０部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ８０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．５０ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に３００μｍになるように塗工して、１１０℃で３分間乾燥して、耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 6]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3520 (styrene ratio 15% by weight, diblock copolymer ratio 78% by weight) manufactured by Nippon Zeon Co., Ltd., C5 petroleum resin manufactured by Nippon Zeon Co., Ltd. as a tackifier Composition comprising 320 parts of Quinton N180 (softening point 80 ° C.), 80 parts of aromatic softener Diana Process Oil NS-90S manufactured by Idemitsu Kosan Co., Ltd. and 1 part of anti-aging agent Irganox # 1010 manufactured by Ciba Specialty Chemicals Was applied to a polyethylene substrate (700 μm thickness) having an apparent density of 0.50 kg / m 3 , which was uniformly dissolved in toluene and having a solid content of 60% by weight. And dried at 110 ° C. for 3 minutes to obtain a chemical-resistant adhesive tape. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［実施例７］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３５２０（スチレン比１５重量％、ジブロック共重合体比７８重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５石油樹脂クイントンＮ１８０（軟化点８０℃）１６０部、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）１６０部、出光興産社製芳香族軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ８０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．５０ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に５０μｍになるように塗工して、１１０℃で３分間乾燥して、耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 7]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3520 (styrene ratio 15% by weight, diblock copolymer ratio 78% by weight) manufactured by Nippon Zeon Co., Ltd., C5 petroleum resin manufactured by Nippon Zeon Co., Ltd. as a tackifier 160 parts of Quinton N180 (softening point 80 ° C.), 160 parts of C5 / C9 copolymer petroleum resin Quinton C200S (softening point 96 ° C.) manufactured by Nippon Zeon Co., Ltd. 80 parts of aromatic softener Diana Process Oil NS-90S manufactured by Idemitsu Kosan Co., Ltd. In addition, a composition comprising 1 part of an anti-aging agent Irganox # 1010 manufactured by Ciba Specialty Chemicals Co., Ltd. was uniformly dissolved in toluene, and an adhesive solution having a solid content of 60% by weight was subjected to corona treatment, and an apparent density of 0.50 kg. / M 3 polyethylene substrate (700μm thickness) And dried at 110 ° C. for 3 minutes to obtain a chemical-resistant adhesive tape. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［実施例８］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３５２０（スチレン比１５重量％、ジブロック共重合体比７８重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５石油樹脂クイントンＮ１８０（軟化点８０℃）８０部、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）１００部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ４０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をホットメルトコーターで、剥離紙に２０μｍになるように塗工して、コロナ処理を施したみかけ密度０．５０ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に転写して耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 8]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3520 (styrene ratio 15% by weight, diblock copolymer ratio 78% by weight) manufactured by Nippon Zeon Co., Ltd., C5 petroleum resin manufactured by Nippon Zeon Co., Ltd. as a tackifier Quinton N180 (softening point 80 ° C.) 80 parts, Nippon Zeon C5 / C9 copolymer petroleum resin Quinton C200S (softening point 96 ° C.) 100 parts, Idemitsu Kosan aromatic softener Diana Process Oil NS-90S 40 A composition comprising 1 part by weight and an anti-aging agent Irganox # 1010 manufactured by Ciba Specialty Chemicals Co., Ltd. was applied to a release paper with a hot melt coater so as to have a thickness of 20 μm and subjected to a corona treatment. chemical adhesive is transferred to a polyethylene substrate of 50kg / m 3 (700μm thick) I got a tape. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［実施例９］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３５２０（スチレン比１５重量％、ジブロック共重合体比７８重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５石油樹脂クイントンＮ１８０（軟化点８０℃）８０部、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）１００部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ４０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をホットメルトコーターで、剥離紙に３００μｍになるように塗工して、コロナ処理を施したみかけ密度０．５０ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に転写して耐薬品性粘着テープを得た。この耐薬品性粘着テープは、表２に示すとおり、対逆浸透膜接着性、耐薬品性及び圧縮ひずみ性に優れていた。
[Example 9]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3520 (styrene ratio 15% by weight, diblock copolymer ratio 78% by weight) manufactured by Nippon Zeon Co., Ltd., C5 petroleum resin manufactured by Nippon Zeon Co., Ltd. as a tackifier Quinton N180 (softening point 80 ° C.) 80 parts, Nippon Zeon C5 / C9 copolymer petroleum resin Quinton C200S (softening point 96 ° C.) 100 parts, Idemitsu Kosan aromatic softener Diana Process Oil NS-90S 40 A composition comprising 1 part by weight and an anti-aging agent Irganox # 1010 manufactured by Ciba Specialty Chemicals Co., Ltd. was applied to a release paper with a hot melt coater so as to have a thickness of 300 μm and subjected to a corona treatment. Transfer to 50 kg / m 3 polyethylene substrate (700 μm thickness) A wearing tape was obtained. As shown in Table 2, this chemical-resistant pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion, chemical resistance and compression strain.
［比較例１］
粘着剤として、綜研化学社製アクリル系粘着剤ＳＫダイン１６０４Ｘ（固形分６４重量％）を、コロナ処理を施したみかけ密度０．５０ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に５０μｍになるように塗工して、１１０℃で３分間乾燥して、フィルム粘着テープを得た。このフィルム粘着テープは、表２に示すとおり、圧縮ひずみ性は優れていたが、対逆浸透膜接着性及び耐薬品性に劣っていた。
[Comparative Example 1]
As a pressure-sensitive adhesive, an acrylic pressure-sensitive adhesive SK Dyne 1604X (solid content: 64% by weight) manufactured by Soken Chemical Co., Ltd. is applied to a polyethylene substrate (700 μm thickness) having an apparent density of 0.50 kg / m 3 subjected to corona treatment so that the thickness becomes 50 μm. And dried at 110 ° C. for 3 minutes to obtain a film adhesive tape. As shown in Table 2, this film pressure-sensitive adhesive tape was excellent in compressive strain, but was inferior in reverse osmosis membrane adhesion and chemical resistance.
［比較例２］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３６２０（スチレン比１４重量％、ジブロック共重合体比１２重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）５０部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ２部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．１３ｋｇ／ｍ３のポリエチレン基材（１０００μｍ厚）に１０μｍになるように塗工して、１１０℃で３分間乾燥して、フィルム粘着テープを得た。この粘着テープは、表２に示すとおり、耐薬品性には優れていたが、対逆浸透膜接着性及び圧縮ひずみ性に劣っていた。
[Comparative Example 2]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quinac 3620 (styrene ratio 14% by weight, diblock copolymer ratio 12% by weight) manufactured by Nippon Zeon Co., Ltd. As a tackifier, C5 / C9 manufactured by Nippon Zeon Co., Ltd. Copolymer Petroleum Resin Quinton C200S (softening point 96 ° C.) 50 parts, Idemitsu Kosan aromatic softener Diana Process Oil NS-90S 2 parts and Ciba Specialty Chemicals anti-aging agent Irganox # 1010 1 part An adhesive solution having a solid content of 60% by weight is uniformly dissolved in toluene so that the pressure-sensitive adhesive solution is 10 μm on a polyethylene substrate (1000 μm thickness) with an apparent density of 0.13 kg / m 3 subjected to corona treatment. The film was coated and dried at 110 ° C. for 3 minutes to obtain a film adhesive tape. As shown in Table 2, this pressure-sensitive adhesive tape was excellent in chemical resistance, but was inferior in reverse osmosis membrane adhesion and compression strain.
［比較例３］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３４６０（スチレン比２５重量％、ジブロック共重合体比４２重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）４００部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ９０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．０７ｋｇ／ｍ３のポリエチレン基材（２０００μｍ厚）に５０μｍになるように塗工して、１１０℃で３分間乾燥して、フィルム粘着テープを得た。この粘着テープは、表２に示すとおり、耐薬品性には優れていたが、対逆浸透膜接着性及び圧縮ひずみ性に劣っていた。
[Comparative Example 3]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3460 (styrene ratio 25% by weight, diblock copolymer ratio 42% by weight) manufactured by Nippon Zeon Co., Ltd. As a tackifier, C5 / C9 manufactured by Nippon Zeon Co., Ltd. Copolymer Petroleum Resin Quinton C200S (softening point 96 ° C.) 400 parts, Idemitsu Kosan Co., Ltd. aromatic softener Diana Process Oil NS-90S 90 parts and Ciba Specialty Chemicals Co., Ltd. anti-aging agent Irganox # 1010 1 part An adhesive solution having a solid content of 60% by weight is uniformly dissolved in toluene so as to be 50 μm on a polyethylene substrate (2000 μm thickness) having an apparent density of 0.07 kg / m 3 subjected to corona treatment. The film was coated and dried at 110 ° C. for 3 minutes to obtain a film adhesive tape. As shown in Table 2, this pressure-sensitive adhesive tape was excellent in chemical resistance, but was inferior in reverse osmosis membrane adhesion and compression strain.
［比較例４］
エラストマーとして、日本ゼオン社製スチレン−イソプレン−スチレンブロック共重合体クインタック３５２０（スチレン比１５重量％、ジブロック共重合体比７８重量％）１００部、タッキファイヤーとして、日本ゼオン社製Ｃ５石油樹脂クイントンＮ１８０（軟化点８０℃）８０部、日本ゼオン社製Ｃ５／Ｃ９共重合石油樹脂クイントンＣ２００Ｓ（軟化点９６℃）１００部、出光興産社製芳香族系軟和剤ダイアナプロセスオイルＮＳ−９０Ｓ ４０部及びチバ・スペシャリティ・ケミカルズ社製老化防止剤イルガノックス＃１０１０ １部からなる組成物をトルエンに均一に溶解して固形分６０重量％の粘着剤溶液を、コロナ処理を施したみかけ密度０．６７ｋｇ／ｍ３のポリエチレン基材（７００μｍ厚）に５０μｍになるように塗工して、１１０℃で３分間乾燥して、フィルム粘着テープを得た。この粘着テープは、表２に示すとおり、対逆浸透膜接着性及び耐薬品性には優れていたが、圧縮ひずみ性に劣っていた。
[Comparative Example 4]
As an elastomer, 100 parts of styrene-isoprene-styrene block copolymer quintack 3520 (styrene ratio 15% by weight, diblock copolymer ratio 78% by weight) manufactured by Nippon Zeon Co., Ltd., C5 petroleum resin manufactured by Nippon Zeon Co., Ltd. as a tackifier Quinton N180 (softening point 80 ° C.) 80 parts, Nippon Zeon C5 / C9 copolymer petroleum resin Quinton C200S (softening point 96 ° C.) 100 parts, Idemitsu Kosan aromatic softener Diana Process Oil NS-90S 40 A composition comprising 1 part by weight and an anti-aging agent Irganox # 1010 manufactured by Ciba Specialty Chemicals Co., Ltd. was uniformly dissolved in toluene, and an adhesive solution having a solid content of 60% by weight was subjected to a corona treatment and an apparent density of 0. was coated so as to 50μm polyethylene substrate of 67kg / m 3 (700μm thick) And dried at 110 ° C. for 3 minutes to obtain a film adhesive tape. As shown in Table 2, this pressure-sensitive adhesive tape was excellent in reverse osmosis membrane adhesion and chemical resistance, but was inferior in compressive strain.
尚、得られた耐薬品性粘着テープの諸特性は、以下の方法で測定し、その結果を表２に示した。また、耐薬品性粘着テープの粘着剤配合を表１に示した。 Various characteristics of the obtained chemical-resistant pressure-sensitive adhesive tape were measured by the following methods, and the results are shown in Table 2. Table 1 shows the adhesive composition of the chemical-resistant adhesive tape.
［圧縮試験］ＡＳＴＭ−Ｄ−１６６７−５９Ｔの方法に準じ、圧縮速度５ｍｍ／分、圧縮応力１．５ＭＰａで粘着テープを圧縮し、粘着テープの圧縮前後の厚さの変化から圧縮ひずみ率を測定した。 [Compression test] According to the method of ASTM-D-1667-59T, the pressure-sensitive adhesive tape is compressed at a compression rate of 5 mm / min and a compression stress of 1.5 MPa, and the compression strain rate is measured from the change in thickness of the pressure-sensitive adhesive tape before and after compression. did.
［対逆浸透膜接着性］湿潤状態の逆浸透膜に、荷重２ｋｇのローラーで一往復させて粘着テープを貼り合わせた後、２０分後、接着の有無を確認した。 [Adhesiveness to reverse osmosis membrane] The adhesive tape was attached to the wet reverse osmosis membrane by reciprocating once with a roller with a load of 2 kg, and after 20 minutes, the presence or absence of adhesion was confirmed.
［耐薬品性］上記粘着テープを塩酸で調整したｐＨ２の酸性水溶液と水酸化ナトリウムで調整したｐＨ１３の塩基性水溶液にそれぞれ１ヶ月間浸漬した。水洗乾燥後、酸性水溶液で処理した粘着テープ及び塩基性水溶液で処理した粘着テープを被着体のポリプロピレン板に貼り合せ、粘着力を測定した。初期のポリプロピレンに対する粘着力と酸性水溶液又は塩基性水溶液浸漬後の粘着力の測定値から、粘着力の変化率（低下率）を算出し、耐薬品性の指標とした。 [Chemical resistance] The adhesive tape was immersed in a pH 2 acidic aqueous solution adjusted with hydrochloric acid and a pH 13 basic aqueous solution adjusted with sodium hydroxide for 1 month. After washing and drying with water, the pressure-sensitive adhesive tape treated with an acidic aqueous solution and the pressure-sensitive adhesive tape treated with a basic aqueous solution were bonded to the polypropylene plate of the adherend, and the adhesive strength was measured. The change rate (reduction rate) of the adhesive force was calculated from the initial adhesive strength to polypropylene and the measured adhesive strength after immersion in an acidic aqueous solution or basic aqueous solution, and used as an index of chemical resistance.
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