JP2016222858A - Non-inflammable solvent type adhesive and method of using thereof - Google Patents
Non-inflammable solvent type adhesive and method of using thereof Download PDFInfo
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- JP2016222858A JP2016222858A JP2015112815A JP2015112815A JP2016222858A JP 2016222858 A JP2016222858 A JP 2016222858A JP 2015112815 A JP2015112815 A JP 2015112815A JP 2015112815 A JP2015112815 A JP 2015112815A JP 2016222858 A JP2016222858 A JP 2016222858A
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- 239000002904 solvent Substances 0.000 title claims abstract description 81
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000000853 adhesive Substances 0.000 title abstract description 32
- 230000001070 adhesive effect Effects 0.000 title abstract description 32
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims abstract description 55
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 55
- 239000011737 fluorine Substances 0.000 claims abstract description 55
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims abstract description 36
- 125000004122 cyclic group Chemical group 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims abstract description 18
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 15
- 239000000428 dust Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- 229920000642 polymer Polymers 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 230000003287 optical effect Effects 0.000 claims abstract description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 79
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000013056 hazardous product Substances 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000007123 defense Effects 0.000 abstract 1
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 12
- 239000003960 organic solvent Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 7
- -1 perfluoro Chemical group 0.000 description 7
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000004698 Polyethylene Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 229920000573 polyethylene Polymers 0.000 description 5
- 238000003860 storage Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- SJBBXFLOLUTGCW-UHFFFAOYSA-N 1,3-bis(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=CC(C(F)(F)F)=C1 SJBBXFLOLUTGCW-UHFFFAOYSA-N 0.000 description 3
- 239000002998 adhesive polymer Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 description 3
- IDBYQQQHBYGLEQ-UHFFFAOYSA-N 1,1,2,2,3,3,4-heptafluorocyclopentane Chemical compound FC1CC(F)(F)C(F)(F)C1(F)F IDBYQQQHBYGLEQ-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- 150000002894 organic compounds Chemical group 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000010702 perfluoropolyether Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- WZLFPVPRZGTCKP-UHFFFAOYSA-N 1,1,1,3,3-pentafluorobutane Chemical compound CC(F)(F)CC(F)(F)F WZLFPVPRZGTCKP-UHFFFAOYSA-N 0.000 description 1
- QIROQPWSJUXOJC-UHFFFAOYSA-N 1,1,2,2,3,3,4,4,5,5,6-undecafluoro-6-(trifluoromethyl)cyclohexane Chemical compound FC(F)(F)C1(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C1(F)F QIROQPWSJUXOJC-UHFFFAOYSA-N 0.000 description 1
- YBMDPYAEZDJWNY-UHFFFAOYSA-N 1,2,3,3,4,4,5,5-octafluorocyclopentene Chemical compound FC1=C(F)C(F)(F)C(F)(F)C1(F)F YBMDPYAEZDJWNY-UHFFFAOYSA-N 0.000 description 1
- DJXNLVJQMJNEMN-UHFFFAOYSA-N 2-[difluoro(methoxy)methyl]-1,1,1,2,3,3,3-heptafluoropropane Chemical compound COC(F)(F)C(F)(C(F)(F)F)C(F)(F)F DJXNLVJQMJNEMN-UHFFFAOYSA-N 0.000 description 1
- FNUBKINEQIEODM-UHFFFAOYSA-N 3,3,4,4,5,5,5-heptafluoropentanal Chemical compound FC(F)(F)C(F)(F)C(F)(F)CC=O FNUBKINEQIEODM-UHFFFAOYSA-N 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- ZJIJAJXFLBMLCK-UHFFFAOYSA-N perfluorohexane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F ZJIJAJXFLBMLCK-UHFFFAOYSA-N 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Landscapes
- Adhesives Or Adhesive Processes (AREA)
Abstract
Description
本発明は、非引火性溶剤型粘着剤及びその使用方法に関し、さらに詳しくは、例えば、粘着シート類、両面テープ、粘着加工製品等に利用される非引火性溶剤型粘着剤であってアクリル系ポリマーを粘着成分とするものであり、その非引火性溶剤型粘着剤を、例えば、ＯＡ機器等の内部のダスト吸着に使用する非引火性溶剤型粘着剤及びその使用方法に関する。 The present invention relates to a non-flammable solvent-type pressure-sensitive adhesive and a method of using the non-flammable solvent-type pressure-sensitive adhesive, and more specifically, for example, a non-flammable solvent-type pressure-sensitive adhesive used for pressure-sensitive adhesive sheets, double-sided tapes, pressure-sensitive adhesive products, etc. The present invention relates to a non-flammable solvent-type pressure-sensitive adhesive that uses a polymer as an adhesive component, and uses the non-flammable solvent-type pressure-sensitive adhesive for adsorbing dust inside OA equipment, for example.
粘着性ポリマーを有機溶剤に溶解した溶剤型粘着剤は、取り扱い容易な粘着剤として、広く工業的に利用されている。しかし、粘着性ポリマーを有機溶剤に溶解した溶剤型粘着剤は、含有する有機溶剤が引火点を持つことから消防法上の危険物とされている。そのため、そのような溶剤型粘着剤は、保管場所や保管数量の制限、防爆設備での使用など様々な制約を受けることになる。 A solvent-type pressure-sensitive adhesive obtained by dissolving a pressure-sensitive polymer in an organic solvent is widely used industrially as a pressure-sensitive adhesive that is easy to handle. However, a solvent-type pressure-sensitive adhesive obtained by dissolving a pressure-sensitive adhesive polymer in an organic solvent is regarded as a dangerous substance in the Fire Service Act because the organic solvent contained has a flash point. Therefore, such a solvent-type pressure-sensitive adhesive is subject to various restrictions such as storage place and storage quantity limitation and use in explosion-proof equipment.
一方、消防法上の危険物としての制約を受けない粘着剤としては、例えば、粘着成分を水に分散させた水エマルジョン系粘着剤が知られている。しかし、この水エマルジョン系粘着剤は、耐候性・耐水性等の点で溶剤型粘着剤より劣る。また、有機溶剤の引火点を無くし、消防法上の危険物に該当しないようにするために有機溶剤にハイドロフルオロエーテル（ＨＦＥ）等のフッ素溶剤を混合することが知られている(例えば、特許文献１、２)。 On the other hand, as an adhesive that is not restricted as a hazardous material under the Fire Service Law, for example, a water emulsion adhesive in which an adhesive component is dispersed in water is known. However, this water emulsion-based pressure-sensitive adhesive is inferior to the solvent-based pressure-sensitive adhesive in terms of weather resistance and water resistance. In addition, it is known to mix a fluorine solvent such as hydrofluoroether (HFE) with an organic solvent in order to eliminate the flash point of the organic solvent and prevent it from being a hazardous material under the Fire Service Law (for example, patents) References 1, 2).
ところで、ＯＡ機器、家電製品、印刷機器、光学機器、電子機器、食品製造機器、医療機器、自動車部品、減速機などの機器や装置類或いはそれらの部品等にあっては、動作によって発生する部品の摩耗粉や装置内部に混入したダストが部品等に付着すると正常な動作が妨げられ、その結果所望の効果を得ることができない場合がある。例えば、コンピュータなどの電子機器類では、機器内に外気を取り入れて発熱した電子部品の冷却が行われており、その際、外気と共に機器内部へ埃が侵入するのを防止するために一般的にはフィルタが使用されるが、例えば、特許文献３では帯電部材を利用して埃を吸着する方法が提案されている。 By the way, in the case of OA equipment, home appliances, printing equipment, optical equipment, electronic equipment, food manufacturing equipment, medical equipment, automobile parts, reduction gears and other equipment and devices, or parts thereof, parts generated by operation If the wear powder or dust mixed in the apparatus adheres to parts or the like, normal operation is hindered, and as a result, a desired effect may not be obtained. For example, in electronic devices such as computers, electronic components that have generated heat are cooled by taking outside air into the device. In this case, in order to prevent dust from entering the inside of the device together with outside air, it is common. For example, Patent Document 3 proposes a method for adsorbing dust using a charging member.
有機溶剤の引火点を無くすために用いられるフッ素溶剤であるＨＦＥは、粘着性ポリマーとの相溶性が悪いため、粘着性ポリマーを溶解する有機溶剤としてＨＦＥを混合すると、系内で粘着成分が分離してしまうという問題があった。 HFE, which is a fluorine solvent used to eliminate the flash point of organic solvents, has poor compatibility with adhesive polymers. Therefore, when HFE is mixed as an organic solvent that dissolves adhesive polymers, the adhesive components are separated in the system. There was a problem of doing.
一方、機器や装置類の内部やその部品に埃が付着することを防止するためには外部からのダストの侵入はフィルタで防げるとしても内部で発生する摩耗粉はフィルタで防ぐことはできない。また、機器や装置によっては帯電部材を利用できない場合もある。 On the other hand, in order to prevent dust from adhering to the inside of equipment and devices and parts thereof, the dust from the outside cannot be prevented by the filter even though the intrusion of dust from the outside can be prevented by the filter. In addition, depending on the device or apparatus, the charging member may not be used.
そこで、本発明の目的は、耐候性・耐水性に優れたポリマー溶剤型粘着剤を、引火点のないフッ素系溶剤中に安定的に分散させることにより、消防法上の危険物とはならない非引火性の溶剤型粘着剤を提案することである。 Accordingly, an object of the present invention is to provide a non-hazardous material under the Fire Service Act by stably dispersing a polymer solvent-type adhesive having excellent weather resistance and water resistance in a fluorine-based solvent having no flash point. It is to propose a flammable solvent-type adhesive.
また、本発明の目的は、上記の溶剤型粘着剤を、ＯＡ機器などの機器類の所定箇所に塗布することによって部品の摩耗粉や装置内部に混入したダストを吸着させることで機器類の動作不良を発生させることなく安定した動作を維持させる非引火性溶剤型粘着剤の使用方法を提案することである。 In addition, the object of the present invention is to apply the above-mentioned solvent-type pressure-sensitive adhesive to predetermined parts of equipment such as OA equipment, thereby adsorbing wear powder of parts and dust mixed in the apparatus, thereby operating the equipment. It is to propose a method of using a non-flammable solvent-type adhesive that maintains a stable operation without causing a defect.
上記課題を解決するために、請求項１に記載の本発明は、アクリル系溶剤型粘着剤と環状フッ素溶剤を必須成分とするフッ素溶剤からなる非引火性粘着剤組成物であることを特徴とする。 In order to solve the above-mentioned problems, the present invention according to claim 1 is a non-flammable pressure-sensitive adhesive composition comprising an acrylic solvent-type pressure-sensitive adhesive and a fluorine solvent containing a cyclic fluorine solvent as essential components. To do.
上記課題を解決するために、請求項２に記載の本発明は、アクリル系溶剤型粘着剤０．５〜１５．０質量％と、環状フッ素溶剤を必須成分とするフッ素溶剤９９．５〜８５．０質量％からなる非引火性粘着剤組成物であることを特徴とする。 In order to solve the above-mentioned problems, the present invention according to claim 2 is characterized in that the acrylic solvent-type pressure-sensitive adhesive is 0.5 to 15.0% by mass, and a fluorine solvent 99.5 to 85 containing a cyclic fluorine solvent as essential components. It is a non-flammable pressure-sensitive adhesive composition comprising 0.0% by mass.
上記課題を解決するために、請求項３に記載の本発明は、請求項１又は２に記載の非引火性粘着剤組成物において、環状フッ素溶剤を必須成分とするフッ素溶剤の質量比が、環状フッ素溶剤：鎖状フッ素溶剤＝１００：０〜８０：２０であることを特徴とする。 In order to solve the above problems, the present invention according to claim 3 is the non-flammable pressure-sensitive adhesive composition according to claim 1 or 2, wherein the mass ratio of the fluorine solvent containing a cyclic fluorine solvent as an essential component is Cyclic fluorinated solvent: chain fluorinated solvent = 100: 0 to 80:20.
上記課題を解決するために、請求項４に記載の本発明は、請求項１〜３のいずれか１項に記載の非引火性粘着剤組成物において、アクリル系溶剤型粘着剤が、ポリマー濃度３５質量％における粘度が、２５℃においてせん断速度１３ｓ−１のとき７０００ｍＰ・ｓ以下であるアクリル系ポリマーを用いた溶剤型粘着剤であることを特徴とする。 In order to solve the above problems, the present invention according to claim 4 is the non-flammable pressure-sensitive adhesive composition according to any one of claims 1 to 3, wherein the acrylic solvent-based pressure-sensitive adhesive has a polymer concentration. It is a solvent-type pressure-sensitive adhesive using an acrylic polymer having a viscosity at 35% by mass of 7000 mP · s or less at 25 ° C. and a shear rate of 13 s −1 .
上記課題を解決するために、請求項５に記載の本発明は、請求項１〜４のいずれか１項に記載の非引火性粘着剤組成物を、ＯＡ機器、家電製品、印刷機器、光学機器、電子機器、食品製造機器、医療機器、自動車部品、減速機などの機器や装置類の内部やその部品に塗布することにより、前記機器類の内部の埃や摩耗粉を吸着除去することを特徴とする非引火性粘着剤組成物の使用方法を提供する。 In order to solve the above-mentioned problem, the present invention according to claim 5 is a non-flammable pressure-sensitive adhesive composition according to any one of claims 1 to 4, wherein the non-flammable pressure-sensitive adhesive composition is an OA device, a home appliance, a printing device, an optical device. By adhering and removing dust and wear powder inside the equipment, such as equipment, electronic equipment, food manufacturing equipment, medical equipment, automobile parts, reducers, etc. A method of using the feature non-flammable adhesive composition is provided.
本発明に係る非引火性溶剤型粘着剤によれば、引火性のある溶剤型粘着剤をフッ素溶剤中に分散させることで、引火点を無くし、消防法上の危険物に該当しないようにしたので、消防法上の危険物に該当する従来の溶剤型粘着剤のように保管場所、保管数量の制限や、防爆設備での使用など様々な制約を受けることがなく、粘着性を必要とする様々な用途に使用することができるという効果がある。 According to the non-flammable solvent-type pressure-sensitive adhesive according to the present invention, the flammable solvent-type pressure-sensitive adhesive is dispersed in the fluorine solvent, thereby eliminating the flash point and making it not a dangerous material under the Fire Service Law. Therefore, like conventional solvent-based adhesives that fall under the Fire Service Act, there are no restrictions on storage location, storage quantity, or use in explosion-proof equipment, and stickiness is required. There is an effect that it can be used for various purposes.
また、本発明に係る非引火性溶剤型粘着剤によれば、アクリル系溶剤型粘着剤０．５〜１５．０質量％と、環状フッ素溶剤を必須成分とするフッ素溶剤９９．５〜８５．０質量％によって構成することとしたので系内で粘着成分を分離させることなく均一に分散させることができるとういう効果がある。 Moreover, according to the non-flammable solvent-type pressure-sensitive adhesive according to the present invention, the acrylic solvent-type pressure-sensitive adhesive 0.5 to 15.0% by mass and the fluorine solvent 99.5 to 85. Since it is constituted by 0% by mass, there is an effect that the adhesive component can be uniformly dispersed without being separated in the system.
また、本発明に係る非引火性溶剤型粘着剤の使用方法によれば、粘着剤を液体型としたので塗布箇所の形状に左右されることなく塗布することができ、しかも、消防法上の危険物としての制約を受けないのでさまざまな機器類や装置類の内部に塗布することができ、機器類や装置類の内部で発生する摩擦粉やダストを吸着することにより、機器類や装置類の安定した動作を維持することができるという効果がある。 Further, according to the method of using the non-flammable solvent-type pressure-sensitive adhesive according to the present invention, since the pressure-sensitive adhesive is a liquid type, it can be applied without being influenced by the shape of the application location, Since it is not restricted as a dangerous substance, it can be applied inside various equipment and devices. By adsorbing friction powder and dust generated inside the equipment and devices, the equipment and devices There is an effect that it is possible to maintain a stable operation.
本発明に係る非引火性溶剤型粘着剤及びその使用方法について以下詳細に説明する。初めに、本発明に係る非引火性溶剤型粘着剤について説明する。 The non-flammable solvent-type pressure-sensitive adhesive and the method for using the same according to the present invention will be described in detail below. First, the non-flammable solvent-type pressure-sensitive adhesive according to the present invention will be described.
［非引火性溶剤型粘着剤の構成成分、及びその配合割合］
本発明に係る非引火性溶剤型粘着剤は、アクリル系溶剤型粘着剤とフッ素溶剤からなる非引火性溶剤型粘着剤である。
[Constituent components of non-flammable solvent-type pressure-sensitive adhesive and their blending ratio]
The non-flammable solvent-type pressure-sensitive adhesive according to the present invention is a non-flammable solvent-type pressure-sensitive adhesive comprising an acrylic solvent-type pressure-sensitive adhesive and a fluorine solvent.
（１）アクリル系溶剤型粘着剤
本発明に係る非引火性溶剤型粘着剤に用いられるアクリル系溶剤型粘着剤は、アクリル系ポリマーを有機溶剤に溶解した溶液である。本発明に係る非引火性溶剤型粘着剤に使用するアクリル系ポリマーとしては、アクリル系ポリマー濃度３５質量％における粘度が、２５℃においてせん断速度１３ｓ−１のとき７０００ｍＰ・ｓ以下のアクリル系溶剤型粘着剤であることが好ましい。アクリル系溶剤型粘着剤の粘度が７０００ｍＰ・ｓを超えるような場合には、アクリル系溶剤型粘着剤がフッ素溶剤に十分に分散せず、粘着成分と溶剤成分が分離する傾向が強くなるからである。ここで、アクリル系ポリマーとは、一種以上のアクリル酸エステルを重合して形成される高分子化合物である。アクリル系溶剤型粘着剤中の有機溶剤は、アクリル系ポリマーを溶解できる溶剤であれば特に限定されることはない。そのような溶剤としては、例えば、酢酸エチル、ヘキサン、トルエン、１，３−ビス(トリフルオロメチル)ベンゼン等がある。
(1) Acrylic solvent-type pressure-sensitive adhesive The acrylic solvent-type pressure-sensitive adhesive used in the non-flammable solvent-type pressure-sensitive adhesive according to the present invention is a solution obtained by dissolving an acrylic polymer in an organic solvent. The acrylic polymer used in the non-flammable solvent-based pressure-sensitive adhesive according to the present invention is an acrylic solvent type having a viscosity at an acrylic polymer concentration of 35% by mass of 7000 mP · s or less at 25 ° C. and a shear rate of 13 s −1. A pressure-sensitive adhesive is preferred. If the viscosity of the acrylic solvent-type pressure-sensitive adhesive exceeds 7000 mP · s, the acrylic solvent-type pressure-sensitive adhesive is not sufficiently dispersed in the fluorine solvent, and the tendency of the pressure-sensitive adhesive component and the solvent component to separate becomes strong. is there. Here, the acrylic polymer is a polymer compound formed by polymerizing one or more acrylic esters. The organic solvent in the acrylic solvent-type pressure-sensitive adhesive is not particularly limited as long as it is a solvent that can dissolve the acrylic polymer. Examples of such a solvent include ethyl acetate, hexane, toluene, 1,3-bis (trifluoromethyl) benzene and the like.
（２）フッ素溶剤
本発明に係る非引火性溶剤型粘着剤に用いられるフッ素溶剤としては、環状フッ素溶剤の単独、あるいは、環状フッ素溶剤と鎖状フッ素溶剤の混合物である。ここで、フッ素溶剤とは、炭化水素化合物の水素部分を一部、もしくは全てフッ素に置換した有機化合物で、引火点がないことを特徴とする揮発性の液体有機化合物である。本発明に係る非引火性溶剤型粘着剤に用いられる好ましい環状フッ素溶剤としては、例えば、１，１，２，２，３，３，４−ヘプタフルオロシクロペンタン、パーフルオロ（１，３−ジメチルシクロヘキサン）、オクタフルオロシクロペンテン、パーフルオロメチルシクロヘキサンなどがある。また、本発明に係る非引火性溶剤型粘着剤に用いられる好ましい鎖状フッ素溶剤としては、ハイドロフルオロカーボン(ＨＦＣ)、ハイドロフルオロエーテル(ＨＦＥ)、パーフルオロカーボン(ＰＦＣ)、パーフルオロポリエーテル(ＰＦＰＥ)、不飽和ＨＦＣ(ＨＦＯ)等がある。もちろん、これ以外の環状フッ素溶剤や鎖状フッ素溶剤を用いることも可能である。
(2) Fluorine solvent The fluorine solvent used in the non-flammable solvent-type pressure-sensitive adhesive according to the present invention is a cyclic fluorine solvent alone or a mixture of a cyclic fluorine solvent and a chain fluorine solvent. Here, the fluorine solvent is an organic compound obtained by substituting part or all of the hydrogen part of a hydrocarbon compound with fluorine, and is a volatile liquid organic compound characterized by having no flash point. Preferred cyclic fluorine solvents used in the non-flammable solvent-type pressure-sensitive adhesive according to the present invention include, for example, 1,1,2,2,3,3,4-heptafluorocyclopentane, perfluoro (1,3-dimethyl). Cyclohexane), octafluorocyclopentene, perfluoromethylcyclohexane and the like. Moreover, as a preferable chain | strand fluorine solvent used for the nonflammable solvent type adhesive which concerns on this invention, hydrofluorocarbon (HFC), hydrofluoroether (HFE), perfluorocarbon (PFC), perfluoropolyether (PFPE) And unsaturated HFC (HFO). Of course, it is also possible to use other cyclic fluorine solvents or chain fluorine solvents.
また、本発明に係る非引火性溶剤型粘着剤に用いられるフッ素溶剤は、１種の環状フッ素溶剤のみでもよいが、沸点や融点の異なる他の環状フッ素溶剤及び／又は鎖状フッ素溶剤との混合溶剤とすることで、作製される非引火性溶剤型粘着剤の凝固点や乾燥速度を任意に調整することが可能となる。 Further, the fluorine solvent used in the non-flammable solvent-type pressure-sensitive adhesive according to the present invention may be only one kind of cyclic fluorine solvent, but with other cyclic fluorine solvents and / or chain-like fluorine solvents having different boiling points and melting points. By using a mixed solvent, it is possible to arbitrarily adjust the freezing point and drying speed of the non-flammable solvent-type pressure-sensitive adhesive to be produced.
本発明に係る非引火性溶剤型粘着剤に用いられる環状フッ素溶剤と鎖状フッ素溶剤の混合比は、フッ素溶剤全体に対し鎖状フッ素溶剤が２０質量％以下とすることが好ましい。鎖状フッ素溶剤の割合が２０質量％を超えるとフッ素溶剤とアクリル系溶剤型粘着剤の相溶性が悪化し、その混合物は二層に分離してしまうからである。 The mixing ratio of the cyclic fluorine solvent and the chain fluorine solvent used in the non-flammable solvent-based pressure-sensitive adhesive according to the present invention is preferably 20% by mass or less of the chain fluorine solvent with respect to the whole fluorine solvent. This is because when the proportion of the chain fluorine solvent exceeds 20% by mass, the compatibility between the fluorine solvent and the acrylic solvent-type pressure-sensitive adhesive deteriorates, and the mixture separates into two layers.
（３）配合割合
本発明に係る非引火性溶剤型粘着剤は、好ましくはアクリル系ポリマーを有機溶剤に溶かしたアクリル系溶剤型粘着剤０．５〜１５．０質量％と、環状フッ素溶剤を必須成分とするフッ素溶剤９９．５〜８５．０質量％から構成される。アクリル系溶剤型粘着剤が１５．０質量％を超えると引火性液体の配合割合が多くなるため、その混合物は引火点を有することとなり、消防法上の危険物に該当してしまう。一方、アクリル系溶剤型粘着剤が０．５質量％を下回ると粘着剤としての実用上の効果が期待できなくなることからアクリル系溶剤型粘着剤の割合は０．５〜１５．０質量％の範囲であることが好ましい。尚、アクリル系溶剤型粘着剤を５．０質量％以上とすれば塗布し易く付着性のよい非引火性溶剤型粘着剤とすることができる。
(3) Mixing ratio The non-flammable solvent-type pressure-sensitive adhesive according to the present invention preferably comprises 0.5 to 15.0% by mass of an acrylic solvent-type pressure-sensitive adhesive obtained by dissolving an acrylic polymer in an organic solvent, and a cyclic fluorinated solvent. It is composed of 99.5 to 85.0% by mass of a fluorine solvent as an essential component. If the acrylic solvent-type pressure-sensitive adhesive exceeds 15.0% by mass, the blending ratio of the flammable liquid is increased, so that the mixture has a flash point and falls under the category of dangerous substances under the Fire Service Law. On the other hand, if the acrylic solvent-based pressure-sensitive adhesive is less than 0.5% by mass, the practical effect as a pressure-sensitive adhesive cannot be expected, so the ratio of the acrylic solvent-based pressure-sensitive adhesive is 0.5 to 15.0% by mass. A range is preferable. In addition, if the acrylic solvent-type pressure-sensitive adhesive is 5.0% by mass or more, a non-flammable solvent-type pressure-sensitive adhesive that is easy to apply and has good adhesion can be obtained.
以下、本発明に係る非引火性溶剤型粘着剤の好ましい実施例を示す。実施例１〜７及び比較例１〜２は、以下に示すアクリル系溶剤型粘着剤とびフッ素溶剤を表１に示すような配合割合で組み合わせて高速回転型乳化撹拌機によって調製したものである。尚、比較例３は、アクリル系ポリマーを酢酸エチルで溶解したアクリル系溶剤型粘着剤の単品である。 Hereinafter, preferable examples of the non-flammable solvent-type pressure-sensitive adhesive according to the present invention will be shown. Examples 1 to 7 and Comparative Examples 1 and 2 were prepared by combining the following acrylic solvent-type pressure-sensitive adhesives and fluorine solvents at a blending ratio as shown in Table 1 and using a high-speed rotation type emulsifying stirrer. In addition, the comparative example 3 is a single item of the acrylic solvent type adhesive which melt | dissolved the acrylic polymer with ethyl acetate.
「アクリル系溶剤型粘着剤」
（１）トーヨーケム製ＢＰＳ３２３３Ｄ−３５ＴＦ
溶剤：酢酸エチル
引火点：−５．２℃（タグ式）
アクリル系ポリマー濃度：３５質量％
粘度：１２９０ｍＰ・ｓ
（２）トーヨーケム製ＢＰＳ５３７５※：１，３−ビス(トリフルオロメチル)ベンゼン※※＝７８：２２混合品
アクリル系ポリマー濃度：３５質量％
粘度：６５３０ｍＰ・ｓ
※トーヨーケム製ＢＰＳ５３７５
アクリル系ポリマー濃度：４５質量％
溶剤：酢酸エチル、トルエン
引火点：−３℃（タグ式）
※※１，３−ビス(トリフルオロメチル)ベンゼン
引火点：２６℃（タグ式）
粘度測定条件：２５℃、１３ｓ−１
"Acrylic solvent adhesive"
(1) BPS3233D-35TF made by Toyochem
Solvent: Ethyl acetate Flash point: -5.2 ° C (tag type)
Acrylic polymer concentration: 35% by mass
Viscosity: 1290 mP · s
(2) Toyochem BPS5375 * : 1,3-bis (trifluoromethyl) benzene ** = 78:22 mixture Acrylic polymer concentration: 35% by mass
Viscosity: 6530 mP · s
* Toyochem BPS5375
Acrylic polymer concentration: 45% by mass
Solvent: ethyl acetate, toluene
Flash point: -3 ° C (tag type)
** 1,3-bis (trifluoromethyl) benzene
Flash point: 26 ° C (tag type)
Viscosity measurement conditions: 25 ° C., 13 s −1
［フッ素溶剤］
Ａ．１，１，２，２，３，３，４−ヘプタフルオロシクロペンタン(環状フッ素溶剤)
Ｂ．メチルノナフルオロブチルエーテル、メチルノナフルオロイソブチルエーテル混合溶剤(３Ｍ製Ｎｏｖｅｃ７１００、ＨＦＥ)
Ｃ．１，１，１，３，３−ペンタフルオロブタン（ＨＦＣ）
Ｄ．パーフルオロ化合物（３Ｍ製フロリナートＦＣ−７２、ＰＦＣ）
[Fluorine solvent]
A. 1,1,2,2,3,3,4-heptafluorocyclopentane (cyclic fluorine solvent)
B. Methyl nonafluorobutyl ether, methyl nonafluoroisobutyl ether mixed solvent (3M Novec7100, HFE)
C. 1,1,1,3,3-pentafluorobutane (HFC)
D. Perfluoro compounds (3M Fluorinert FC-72, PFC)
これら試料を下記試験法によって評価した。
[外観]
調整後１週間静置した後で目視にて内容物の状態を確認した。
[引火点測定]
クリーブランド開放式(ＪＩＳ Ｋ２２６５)により引火点を測定した。
［粉末吹き付け試験］
スライドガラス上の２ｃｍ×２ｃｍの範囲にアクリル系溶剤型粘着剤とフッ素溶剤をそれぞれ実施例１〜７及び比較例１〜３に示す割合で配合したものをそれぞれ０．１ミリリットル塗布し、自然乾燥後にその表面に向けてポリエチレン粉(平均粒径：４０μｍ)を吹き付けた。その後、スライドガラスを不織布で軽く拭き、実施例１〜７及び比較例１〜３の塗布面に付着したポリエチレン粉の付着状態を確認した（粉末吹き付け試験）。その結果を表２に示す。
These samples were evaluated by the following test methods.
[appearance]
After the adjustment, the contents were allowed to stand for 1 week, and the state of the contents was visually confirmed.
[Flash point measurement]
The flash point was measured by the Cleveland open type (JIS K2265).
[Powder spray test]
Apply 0.1 ml each of acrylic solvent-type pressure-sensitive adhesive and fluorine solvent in the proportions shown in Examples 1 to 7 and Comparative Examples 1 to 3 in the range of 2 cm × 2 cm on the slide glass, and dry naturally Later, polyethylene powder (average particle size: 40 μm) was sprayed toward the surface. Thereafter, the slide glass was lightly wiped with a nonwoven fabric, and the adhesion state of the polyethylene powder adhered to the coated surfaces of Examples 1 to 7 and Comparative Examples 1 to 3 was confirmed (powder spraying test). The results are shown in Table 2.
表１、２に示すように、実施例１〜７の各試料の外観
については内容物の分離はなく安定した分散状態であり、引火点は観測されなかった。
比較例１は、フッ素溶剤を全てＨＦＥとしたため、アクリル系溶剤系粘着剤が分散せず、溶剤とアクリル系ポリマーが分離した。
比較例２は、鎖状フッ素溶剤の配合量が２０質量％を超えたため、アクリル系ポリマーを含む層と溶剤のみの層に分離した。
比較例３は、アクリル系溶剤系粘着剤のそのものであり、−５．２℃の引火点有している。
As shown in Tables 1 and 2, the appearance of each sample of Examples 1 to 7 was a stable dispersion state without separation of the contents, and no flash point was observed.
In Comparative Example 1, since all of the fluorine solvent was HFE, the acrylic solvent-based adhesive was not dispersed, and the solvent and the acrylic polymer were separated.
Since the compounding quantity of the chain | strand-shaped fluorine solvent exceeded 20 mass%, the comparative example 2 isolate | separated into the layer containing an acrylic polymer, and the layer of only a solvent.
Comparative Example 3 is an acrylic solvent-based pressure-sensitive adhesive itself and has a flash point of -5.2 ° C.
また、実施例１〜７の各非引火性溶剤型粘着剤、及び、アクリル系溶剤型粘着剤（１）、（２）について、それぞれ０．１ミリリットルをスライドガラス上の２ｃｍ×２ｃｍの範囲に塗布し、自然乾燥した後の粘着性を指触で比較したところ、実施例１〜７はいずれも強い粘着性を示す事が確認された。特に実施例４、５はアクリル系溶剤型粘着剤（１）、（２）と同様の強い粘着性を示すことが確認された。 Moreover, about each nonflammable solvent-type adhesive of Examples 1-7 and acrylic solvent-type adhesive (1), (2), 0.1 milliliter is each in the range of 2 cm x 2 cm on a slide glass. When the adhesiveness after apply | coating and air-drying was compared by finger touch, it was confirmed that Example 1-7 showed strong adhesiveness. In particular, Examples 4 and 5 were confirmed to exhibit the same strong adhesiveness as the acrylic solvent-type adhesives (1) and (2).
次に、前記実施例１〜７に示す各非引火性溶剤型粘着剤、及び、アクリル系溶剤型粘着剤（１）を塗布して自然乾燥させたスライドガラスに、平均粒径４０μmのポリエチレン粉を吹き付ける粉末吹き付け試験を行ったところ、実施例１、３〜７の塗布面、及び（１）の塗布面には、ポリエチレン粉が塗布面全体に一様に且つ多量に付着したことが確認されたが、実施例２についてはポリエチレン粉の付着性にやや濃淡（ムラ）が見られた。このことから、アクリル系溶剤型粘着剤が０．５質量％を下回ると十分な粘着性を得ることが難しくなるが、０．５〜５．０質量％未満の場合には数回重ね塗りすることで十分な粘着性を得ることが可能となる。また、アクリル系溶剤型粘着剤が５．０質量％以上である場合にはダストを吸着するのに十分な粘着性を得ることができるのでアクリル系溶剤型粘着剤を５．０〜１５．０質量％で用いることにより１回塗りで効果を発揮させることが可能となる。 Next, a polyethylene powder having an average particle size of 40 μm was applied to a slide glass that was naturally dried by applying each non-flammable solvent-type adhesive and the acrylic solvent-type adhesive (1) shown in Examples 1 to 7 above. As a result of the powder spraying test, it was confirmed that polyethylene powder adhered uniformly and in large amounts to the entire coated surface of the coated surfaces of Examples 1 and 3 to 7 and (1). However, in Example 2, a slight shading (unevenness) was observed in the adhesion of the polyethylene powder. From this, it is difficult to obtain sufficient tackiness when the acrylic solvent-type pressure-sensitive adhesive is less than 0.5% by mass, but when it is less than 0.5 to 5.0% by mass, it is overcoated several times. This makes it possible to obtain sufficient tackiness. Further, when the acrylic solvent-based pressure-sensitive adhesive is 5.0% by mass or more, sufficient adhesiveness to adsorb dust can be obtained, so that the acrylic solvent-based pressure-sensitive adhesive is 5.0 to 15.0. By using it in mass%, it becomes possible to exhibit the effect by one coating.
以上のように、本発明に係る非引火性溶剤型粘着剤及びその使用方法によれば、非引火性溶剤型粘着剤は消防法上の危険物に該当しないので保管等の制約を受けることがなく、しかも粘着性ポリマーを有機溶剤に溶解した従来の溶剤型粘着剤と同等の粘着性を有するので様々な産業において利用価値が高い。 As described above, according to the non-flammable solvent-type pressure-sensitive adhesive and its method of use according to the present invention, the non-flammable solvent-type pressure-sensitive adhesive does not correspond to a hazardous material under the Fire Service Act, and thus may be subject to storage restrictions. In addition, since it has the same adhesiveness as a conventional solvent-type adhesive obtained by dissolving an adhesive polymer in an organic solvent, it is highly useful in various industries.
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