JP2019112505A5 - - Google Patents

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JP2019112505A5
JP2019112505A5 JP2017245614A JP2017245614A JP2019112505A5 JP 2019112505 A5 JP2019112505 A5 JP 2019112505A5 JP 2017245614 A JP2017245614 A JP 2017245614A JP 2017245614 A JP2017245614 A JP 2017245614A JP 2019112505 A5 JP2019112505 A5 JP 2019112505A5
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JP
Japan
Prior art keywords
group
release film
light
weight
adhesive sheet
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JP2017245614A
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Japanese (ja)
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JP2019112505A (en
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Priority to JP2017245614A priority Critical patent/JP2019112505A/en
Priority claimed from JP2017245614A external-priority patent/JP2019112505A/en
Priority to KR1020207020636A priority patent/KR102567694B1/en
Priority to PCT/JP2018/038375 priority patent/WO2019123799A1/en
Priority to CN201880076662.3A priority patent/CN111465668B/en
Priority to SG11202005787TA priority patent/SG11202005787TA/en
Priority to TW107146098A priority patent/TWI791076B/en
Publication of JP2019112505A publication Critical patent/JP2019112505A/en
Publication of JP2019112505A5 publication Critical patent/JP2019112505A5/ja
Priority to JP2022174432A priority patent/JP2023009099A/en
Pending legal-status Critical Current

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Description

付加反応により硬化するシリコーン系材料としては、分子中にビニル基またはアルケニル基を有するポリオルガノシロキサンが挙げられる。アルケニル基の例としては、3−ブテニル基、4−ペンテニル基、5−ヘキセニル基、6−ヘプテニル基、7−オクテニル基、8−ノネニル基、9−デセニル基、10−ウンデセニル基、11−ドデセニル基等が挙げられる。ポリオルガノシロキサンとしては、ポリジメチルシロキサン、ポリジエチルシロキサン、ポリメチルエチルシロキサン等のポリアルキルアルキルシロキサン;ポリアルキルアリールシロキサン;ポリ(ジメチルシロキサン−ジエチルシロキサン等のSi原子含有モノマー成分が複数種用いられている共重合体等が挙げられる。これらの中でも、ポリジメチルシロキサンが好ましい。 Examples of the silicone-based material that cures by an addition reaction include polyorganosiloxane having a vinyl group or an alkenyl group in the molecule. Examples of alkenyl groups include 3-butenyl group, 4-pentenyl group, 5-hexenyl group, 6-heptenyl group, 7-octenyl group, 8-nonenyl group, 9-decenyl group, 10-undecenyl group, 11-dodecenyl group. Groups and the like. As the polyorganosiloxane, a plurality of kinds of Si atom-containing monomer components such as polyalkylalkylsiloxanes such as polydimethylsiloxane, polydiethylsiloxane, polymethylethylsiloxane; polyalkylarylsiloxanes; poly(dimethylsiloxane-diethylsiloxane ) are used. And the like. Among these, polydimethylsiloxane is preferable.

シリコーン系離型剤組成物は、有機溶媒を含んでいてもよい。有機溶媒としては、シクロヘキサン、n−ヘキサン、n−ヘプタン等の炭化水素系溶媒;トルエン、キシレン等の芳香族系溶媒;酢酸エチル、酢酸メチルなどのエステル系溶媒;アセトン、メチルエチルケトンなどのケトン系溶媒;メタノール、エタノール、ブタノール等のアルコール系溶媒が挙げられる。有機溶媒は混合溶媒でもよい。有機溶媒の使用量は、シリコーン系離型剤組成物中80〜99.9質量%程度が好ましい。 The silicone release agent composition may contain an organic solvent. Examples of the organic solvent include hydrocarbon solvents such as cyclohexane, n-hexane and n-heptane; aromatic solvents such as toluene and xylene; ester solvents such as ethyl acetate and methyl acetate; ketone solvents such as acetone and methyl ethyl ketone. An alcohol solvent such as methanol, ethanol, butanol, etc.; The organic solvent may be a mixed solvent. The amount of the organic solvent used is preferably about 80 to 99.9 mass% in the silicone release agent composition.

[離型フィルムと粘着シートの剥離性]
粘着シートの両面に離型フィルムが仮着された離型フィルム付き粘着シートでは、一般に、粘着シートと一方の離型フィルムとの剥離力が、粘着シートと他方の離型フィルムと剥離力に比べて相対的に小さい。粘着シートの使用時には、低剥離力の離型フィルム(軽剥離フィルム)を粘着シートから剥離して第一の被着体との貼り合わせを行った後、相対的に剥離力の大きい離型フィルム(重剥離フィルム)を剥離して、第二の被着体との貼り合わせを行う。粘着シートの表裏に仮着する離型フィルムに剥離力の差を設けておくことにより、第一の被着体との貼り合わせ時に、軽剥離フィルムを選択的に剥離できるため、貼り合わせの作業性を高められる。
[Peelability between release film and adhesive sheet]
The release film on both sides of the adhesive sheet is temporarily adhered to the release film with the pressure-sensitive adhesive sheet, generally, the peel force of the release film of the adhesive sheet and one is, the peel strength between the release film of the adhesive sheet and the other It is relatively small in comparison. When using a pressure-sensitive adhesive sheet, a release film (light release film) having a low peeling force is peeled from the pressure-sensitive adhesive sheet and bonded to the first adherend, and then a release film having a relatively large peeling force. The (heavy release film) is peeled off and bonded to the second adherend. By attaching a release force difference to the release film that is temporarily attached to the front and back of the adhesive sheet, the light release film can be selectively released when attaching to the first adherend. You can enhance your sex.

前述のように、紫外線吸収剤を含む光硬化性粘着剤組成物に照射した紫外光の大半は、紫外線吸収剤により吸収される。光重合開始剤の感度波長および照射光の波長を長波長側(例えば400nm以上)にシフトした場合でも、紫外線吸収剤による光吸収を完全に抑制することは困難である。紫外線吸収剤が光を吸収すると、光エネルギーが熱エネルギーに変換されて温度が上昇する。特に、光照射面側の離型層15と粘着剤組成物層55との界面近傍では、紫外線吸収剤による光吸収量が大きいため、温度が上昇しやすい。光照射下で温度が上昇すると、光硬化反応に加えて熱硬化反応が進行しやすくなる。そのため、離型層15中の未反応の熱反応性官能基(ビニル基、アルケニル基、アルコキシシリル基、シラノール基、ヒドロシリル基等)と粘着剤組成物中の化合物とが反応し、接着力(剥離力)が上昇すると考えられる。 As described above, most of the ultraviolet light applied to the photocurable pressure-sensitive adhesive composition containing the ultraviolet absorber is absorbed by the ultraviolet absorber. Even when the sensitivity wavelength of the photopolymerization initiator and the wavelength of the irradiation light are shifted to the long wavelength side (for example, 400 nm or more), it is difficult to completely suppress the light absorption by the ultraviolet absorber. When the ultraviolet absorber absorbs light, light energy is converted into heat energy and the temperature rises. In particular, in the vicinity of the interface between the release layer 15 and the pressure-sensitive adhesive composition layer 55 on the light irradiation surface side, the amount of light absorbed by the ultraviolet absorber is large, so the temperature easily rises. When the temperature rises under light irradiation, the thermosetting reaction easily proceeds in addition to the photocuring reaction. Therefore, the release layer thermally reactive unreacted in 15 functional groups (a vinyl group, an alkenyl group, an alkoxysilyl group, a silanol group, hydrosilyl group) and a compound of the viscous Chakuzai composition reacts, adhesion (Peeling force) is considered to increase.

[光硬化性粘着剤組成物の調製]
<粘着剤組成物A>
アクリル酸2-エチルヘキシル(2EHA):78重量部、N−ビニル−2−ピロリドン(NVP):18重量部、およびアクリル酸2-ヒドロキシエチル(HEA):4重量部から構成されるモノマー混合物に、光重合開始剤(先添加光重合開始剤)として、1−ヒドロキシシクロヘキシルフェニルケトン(BASF製「イルガキュア184」):0.035重量部、および2,2−ジメトキシ−1,2−ジフェニルエタン−1−オン(BASF製「イルガキュア651」):0.035重量部を添加した。この組成物に紫外線を照射して、室温における粘度が約20Pa・sとなるまで予備重合を行い、重合率が約8%のプレポリマーを得た。
[Preparation of photocurable pressure-sensitive adhesive composition]
<Adhesive composition A>
A monomer mixture composed of 2-ethylhexyl acrylate (2EHA): 78 parts by weight, N-vinyl-2-pyrrolidone (NVP): 18 parts by weight, and 2-hydroxyethyl acrylate (HEA): 4 parts by weight, As a photopolymerization initiator (pre-added photopolymerization initiator), 1-hydroxycyclohexyl phenyl ketone (“IRGACURE 184” manufactured by BASF): 0.035 parts by weight, and 2,2-dimethoxy-1,2-diphenylethane-1 -ON ("Irgacure 651" manufactured by BASF): 0.035 parts by weight was added. This composition was irradiated with ultraviolet rays and prepolymerized until the viscosity at room temperature reached about 20 Pa·s to obtain a prepolymer having a polymerization rate of about 8 % .

<離型剤溶液B>
ビニル基含有付加型シリコーンの30%トルエン溶液(信越化学製「KS−847T」)100重量部およびシリコーン硬化用白金触媒(信越化学製「CAT−PL−50T」)1重量部を、体積比1:1のトルエンとヘキサンの混合溶媒により、表1に示す所定の濃度となるように希釈して、離型剤溶液Bを調製した。
<Release agent solution B>
A volume ratio of 1 part by weight of 100 parts by weight of a 30% toluene solution of vinyl group-containing addition type silicone (“KS-847T” manufactured by Shin-Etsu Chemical) and 1 part by weight of a platinum catalyst for curing silicone (“CAT-PL-50T” manufactured by Shin-Etsu Chemical) is used. A mold release agent solution B was prepared by diluting with a mixed solvent of 1:1 toluene and hexane so as to have a predetermined concentration shown in Table 1.

JP2017245614A 2017-12-21 2017-12-21 Pressure sensitive adhesive sheet with release film and manufacturing method thereof Pending JP2019112505A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2017245614A JP2019112505A (en) 2017-12-21 2017-12-21 Pressure sensitive adhesive sheet with release film and manufacturing method thereof
KR1020207020636A KR102567694B1 (en) 2017-12-21 2018-10-15 Pressure-sensitive adhesive sheet having release film and manufacturing method thereof
PCT/JP2018/038375 WO2019123799A1 (en) 2017-12-21 2018-10-15 Adhesive sheet with mold release film and method for producing same
CN201880076662.3A CN111465668B (en) 2017-12-21 2018-10-15 Release film-attached pressure-sensitive adhesive sheet and method for producing same
SG11202005787TA SG11202005787TA (en) 2017-12-21 2018-10-15 Release film-equipped pressure sensitive adhesive sheet and method for manufacturing the same
TW107146098A TWI791076B (en) 2017-12-21 2018-12-20 Adhesive sheet with release film and manufacturing method thereof
JP2022174432A JP2023009099A (en) 2017-12-21 2022-10-31 Manufacturing method of pressure sensitive adhesive sheet having release film

Applications Claiming Priority (1)

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JP2017245614A JP2019112505A (en) 2017-12-21 2017-12-21 Pressure sensitive adhesive sheet with release film and manufacturing method thereof

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JP2022174432A Division JP2023009099A (en) 2017-12-21 2022-10-31 Manufacturing method of pressure sensitive adhesive sheet having release film

Publications (2)

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JP2019112505A JP2019112505A (en) 2019-07-11
JP2019112505A5 true JP2019112505A5 (en) 2020-07-02

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JP2022174432A Pending JP2023009099A (en) 2017-12-21 2022-10-31 Manufacturing method of pressure sensitive adhesive sheet having release film

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JP (2) JP2019112505A (en)
KR (1) KR102567694B1 (en)
CN (1) CN111465668B (en)
SG (1) SG11202005787TA (en)
TW (1) TWI791076B (en)
WO (1) WO2019123799A1 (en)

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Publication number Priority date Publication date Assignee Title
WO2019244986A1 (en) * 2018-06-21 2019-12-26 凸版印刷株式会社 Protection film and sheet
JP7312679B2 (en) * 2019-11-19 2023-07-21 日東電工株式会社 OPTICAL FILM WITH ADHESIVE AND METHOD FOR MANUFACTURING THE SAME
JP2021127413A (en) * 2020-02-14 2021-09-02 日東電工株式会社 Release film-attached adhesive sheet and method for producing the same
WO2023074555A1 (en) * 2021-10-27 2023-05-04 日東電工株式会社 Photocurable adhesive sheet
WO2023074554A1 (en) * 2021-10-27 2023-05-04 日東電工株式会社 Photocurable adhesive sheet
JP7435889B1 (en) 2023-07-05 2024-02-21 王子ホールディングス株式会社 Adhesive sheets and laminates

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JP5107761B2 (en) * 2008-03-24 2012-12-26 三菱樹脂株式会社 Release film
JP2012193221A (en) * 2011-03-15 2012-10-11 Mitsubishi Plastics Inc Adhesive sheet
JP5945393B2 (en) 2011-09-30 2016-07-05 日東電工株式会社 Adhesive sheet
JP5903978B2 (en) * 2012-03-28 2016-04-13 住友化学株式会社 Method for producing optical member with adhesive
WO2014142085A1 (en) * 2013-03-11 2014-09-18 リンテック株式会社 Adhesive sheet, and production method for processed device-related members
JP2014189660A (en) * 2013-03-27 2014-10-06 Lintec Corp Method for manufacturing laminate, adhesive roll and adhesive layer-containing laminated structure using laminate
JP2014226923A (en) * 2013-05-28 2014-12-08 三菱樹脂株式会社 Laminated film
JP6323851B2 (en) * 2014-02-14 2018-05-16 日東電工株式会社 Photoreactive material layer-containing sheet and method for producing the same
JP6592254B2 (en) * 2015-02-26 2019-10-16 日東電工株式会社 UV-curable acrylic pressure-sensitive adhesive composition, UV-curable acrylic pressure-sensitive adhesive layer, polarizing film with pressure-sensitive adhesive layer, method for producing UV-curable acrylic pressure-sensitive adhesive layer, and image display device
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