JP2022093347A5 - - Google Patents
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- JP2022093347A5 JP2022093347A5 JP2022058948A JP2022058948A JP2022093347A5 JP 2022093347 A5 JP2022093347 A5 JP 2022093347A5 JP 2022058948 A JP2022058948 A JP 2022058948A JP 2022058948 A JP2022058948 A JP 2022058948A JP 2022093347 A5 JP2022093347 A5 JP 2022093347A5
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- pressure
- component
- sensitive adhesive
- segment
- urethane
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- 239000004820 Pressure-sensitive adhesive Substances 0.000 claims description 39
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims description 24
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 19
- 239000000853 adhesive Substances 0.000 claims description 19
- 229920000570 polyether Polymers 0.000 claims description 19
- 230000001070 adhesive effect Effects 0.000 claims description 18
- 239000012948 isocyanate Substances 0.000 claims description 17
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 16
- 238000005259 measurement Methods 0.000 claims description 16
- 239000000203 mixture Substances 0.000 claims description 14
- 229920000642 polymer Polymers 0.000 claims description 14
- 239000012790 adhesive layer Substances 0.000 claims description 13
- 229920000058 polyacrylate Polymers 0.000 claims description 12
- 239000003431 cross linking reagent Substances 0.000 claims description 9
- 150000002513 isocyanates Chemical class 0.000 claims description 9
- 229920005862 polyol Polymers 0.000 claims description 9
- 150000003077 polyols Chemical class 0.000 claims description 9
- -1 isocyanate compound Chemical class 0.000 claims description 8
- 238000006356 dehydrogenation reaction Methods 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims 8
- 239000004814 polyurethane Substances 0.000 claims 6
- 229920002635 polyurethane Polymers 0.000 claims 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims 4
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 claims 2
- 229920006037 cross link polymer Polymers 0.000 claims 2
- 229920000578 graft copolymer Polymers 0.000 claims 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims 2
- 239000003999 initiator Substances 0.000 claims 2
- 239000000178 monomer Substances 0.000 claims 2
- 229920002284 Cellulose triacetate Polymers 0.000 claims 1
- 239000004952 Polyamide Substances 0.000 claims 1
- 239000004642 Polyimide Substances 0.000 claims 1
- NNLVGZFZQQXQNW-ADJNRHBOSA-N [(2r,3r,4s,5r,6s)-4,5-diacetyloxy-3-[(2s,3r,4s,5r,6r)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6s)-4,5,6-triacetyloxy-2-(acetyloxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl acetate Chemical compound O([C@@H]1O[C@@H]([C@H]([C@H](OC(C)=O)[C@H]1OC(C)=O)O[C@H]1[C@@H]([C@@H](OC(C)=O)[C@H](OC(C)=O)[C@@H](COC(C)=O)O1)OC(C)=O)COC(=O)C)[C@@H]1[C@@H](COC(C)=O)O[C@@H](OC(C)=O)[C@H](OC(C)=O)[C@H]1OC(C)=O NNLVGZFZQQXQNW-ADJNRHBOSA-N 0.000 claims 1
- 239000003822 epoxy resin Substances 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 229920002647 polyamide Polymers 0.000 claims 1
- 229920000647 polyepoxide Polymers 0.000 claims 1
- 229920000728 polyester Polymers 0.000 claims 1
- 229920001721 polyimide Polymers 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 239000010410 layer Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
Description
本発明は、ポリエーテルポリオール成分及びイソシアネート成分由来のウレタン結合を有する分子鎖を有するウレタンポリマー鎖（以下、「ウレタン成分セグメント」と称する）と、（メタ）アクリル酸アルキルエステル成分由来の分子鎖を有するアクリルポリマー鎖（以下、「アクリル成分セグメント」と称する）とを有する粘着剤を含み、前記粘着剤は、架橋剤としてのイソシアネート化合物又は水素引き抜き型光開始剤を含む粘着剤組成物から形成され、下記（Ｉ）及び（ＩＩ）を満足する粘着シートを提案する。
（Ｉ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる－２０℃の貯蔵弾性率（Ｇ’（－２０℃））が３００ｋＰａ以下。
（ＩＩ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる６０℃の貯蔵弾性率（Ｇ’（６０℃））が１０ｋＰａ以上。
The present invention comprises a urethane polymer chain (hereinafter referred to as "urethane component segment") having a molecular chain having a urethane bond derived from a polyether polyol component and an isocyanate component, and a molecular chain derived from a (meth)acrylic acid alkyl ester component. and an acrylic polymer chain (hereinafter referred to as an "acrylic component segment"), wherein the adhesive comprises an isocyanate compound or a hydrogen abstraction type photoinitiator as a cross-linking agent. is formed from and satisfies the following (I) and (II).
(I) Storage modulus at −20° C. (G′(−20° C.)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 300 kPa or less.
(II) The storage elastic modulus at 60°C (G' (60°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 10 kPa or more.
また、本発明は、ポリエーテルポリオール成分及びイソシアネート成分由来のウレタン結合を有する分子鎖を有するウレタンポリマー鎖（以下、「ウレタン成分セグメント」と称する）と、（メタ）アクリル酸アルキルエステル成分由来の分子鎖を有するアクリルポリマー鎖（以下、「アクリル成分セグメント」と称する）とを有する粘着剤を含み、前記粘着剤は、架橋剤としてのイソシアネート化合物又は水素引き抜き型光開始剤を含む粘着剤組成物から形成され、下記（Ｉ）及び（ＩＩ）を満足する、フレキブルデバイスに用いられる粘着部品を提案する。
（Ｉ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる－２０℃の貯蔵弾性率（Ｇ’（－２０℃））が３００ｋＰａ以下。
（ＩＩ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる６０℃の貯蔵弾性率（Ｇ’（６０℃））が１０ｋＰａ以上。
Further, the present invention provides a urethane polymer chain (hereinafter referred to as "urethane component segment") having a molecular chain having a urethane bond derived from a polyether polyol component and an isocyanate component, and a molecule derived from a (meth)acrylic acid alkyl ester component. A pressure-sensitive adhesive having an acrylic polymer chain having a chain (hereinafter referred to as an "acrylic component segment"), and the pressure-sensitive adhesive comprises an isocyanate compound or a hydrogen abstraction type photoinitiator as a cross-linking agent. A self-adhesive part for use in a flexible device is proposed, which is formed and satisfies the following (I) and (II) .
(I) Storage modulus at −20° C. (G′(−20° C.)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 300 kPa or less.
(II) The storage elastic modulus at 60°C (G' (60°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 10 kPa or more.
本発明はまた、２つのフレキシブル部材が粘着層を介して貼り合わされた構成を有するフレキシブル画像表示装置部材であって、前記２つのフレキシブル部材のうち少なくとも１つのフレキシブル部材の表面のハンセン溶解性パラメーターのδｐが１０．０ＭＰａ０．５以上、２０．０ＭＰａ０．５以下であり、前記粘着層は、ポリエーテルポリオール成分及びイソシアネート成分由来のウレタン結合を有する分子鎖を有するウレタンポリマー鎖（以下、「ウレタン成分セグメント」と称する）と、（メタ）アクリル酸アルキルエステル成分由来の分子鎖を有するアクリルポリマー鎖（以下、「アクリル成分セグメント」と称する）とを有する粘着剤を含み、前記粘着剤は、架橋剤としてのイソシアネート化合物又は水素引き抜き型光開始剤を含む粘着剤組成物から形成され、前記粘着層は、下記（Ｉ）及び（ＩＩ）を満足する、フレキシブル画像表示装置部材を提案する。
（Ｉ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる－２０℃の貯蔵弾性率（Ｇ’（－２０℃））が３００ｋＰａ以下。
（ＩＩ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる６０℃の貯蔵弾性率（Ｇ’（６０℃））が１０ｋＰａ以上。
なお、本粘着層は、その形態に制限はなく、予めシート状に成形されたシート状粘着製品が本フレキシブル画像表示装置部材に貼り合わされて形成されたものであっても、本フレキシブル画像表示装置部材に粘着層が直接形成されたものであってもよい。
The present invention also provides a flexible image display device member having a configuration in which two flexible members are bonded together via an adhesive layer, wherein the Hansen solubility parameter of the surface of at least one of the two flexible members is δp is 10.0 MPa 0.5 or more and 20.0 MPa 0.5 or less, and the adhesive layer includes a urethane polymer chain having a molecular chain having a urethane bond derived from a polyether polyol component and an isocyanate component (hereinafter referred to as "urethane component segment ”) and an acrylic polymer chain having a molecular chain derived from a (meth)acrylic acid alkyl ester component (hereinafter referred to as “acrylic component segment”), and the pressure- sensitive adhesive is crosslinked A flexible image display device member is proposed in which the pressure-sensitive adhesive layer is formed from a pressure-sensitive adhesive composition containing an isocyanate compound or a hydrogen abstraction type photoinitiator as an agent, and the pressure- sensitive adhesive layer satisfies the following (I) and (II).
(I) Storage modulus at −20° C. (G′(−20° C.)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 300 kPa or less.
(II) The storage elastic modulus at 60°C (G' (60°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 10 kPa or more.
The form of the adhesive layer is not limited, and the flexible image display device may be formed by laminating a sheet-shaped adhesive product that has been molded into a sheet in advance to the flexible image display device member. The adhesive layer may be directly formed on the member.
本発明はまた、粘着層の少なくとも片面に部材シートを備えた積層体であって、前記粘着層は、ポリエーテルポリオール成分及びイソシアネート成分由来のウレタン結合を有する分子鎖を有するウレタンポリマー鎖（以下、「ウレタン成分セグメント」と称する）と、（メタ）アクリル酸アルキルエステル成分由来の分子鎖を有するアクリルポリマー鎖（以下、「アクリル成分セグメント」と称する）とを有する粘着剤を含み、前記粘着剤は、架橋剤としてのイソシアネート化合物又は水素引き抜き型光開始剤を含む粘着剤組成物から形成され、下記（Ｉ）及び（ＩＩ）を満足し、該部材シート表面のハンセン溶解性パラメーターのδｐが１０．０ＭＰａ０．５以上、２０．０ＭＰａ０．５以下である、積層体及び当該積層体を備えた画像表示装置を提案する。
（Ｉ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる－２０℃の貯蔵弾性率（Ｇ’（－２０℃））が３００ｋＰａ以下。
（ＩＩ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる６０℃の貯蔵弾性率（Ｇ’（６０℃））が１０ｋＰａ以上。
The present invention also provides a laminate having a member sheet on at least one side of an adhesive layer, wherein the adhesive layer has a urethane polymer chain (hereinafter referred to as (hereinafter referred to as "urethane component segment") and an acrylic polymer chain having a molecular chain derived from a (meth)acrylic acid alkyl ester component (hereinafter referred to as "acrylic component segment"). , formed from a pressure-sensitive adhesive composition containing an isocyanate compound or a hydrogen-abstracting photoinitiator as a cross-linking agent, satisfying the following (I) and (II), and having a Hansen solubility parameter δp of 10.5 on the member sheet surface. A laminate having a pressure of 0 MPa or more and 20.0 MPa or less and an image display device including the laminate is proposed.
(I) The storage modulus at -20°C (G' (-20°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 300 kPa or less.
(II) The storage elastic modulus at 60°C (G' (60°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 10 kPa or more.
Claims (29)
（メタ）アクリル酸アルキルエステル成分由来の分子鎖を有するアクリルポリマー鎖（以下、「アクリル成分セグメント」と称する）とを有する粘着剤を含み、
前記粘着剤は、架橋剤としてのイソシアネート化合物又は水素引き抜き型光開始剤を含む粘着剤組成物から形成され、
下記（Ｉ）及び（ＩＩ）を満足する粘着シート。
（Ｉ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる－２０℃の貯蔵弾性率（Ｇ’（－２０℃））が３００ｋＰａ以下。
（ＩＩ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる６０℃の貯蔵弾性率（Ｇ’（６０℃））が１０ｋＰａ以上。 a urethane polymer chain (hereinafter referred to as a "urethane component segment") having a molecular chain having a urethane bond derived from a polyether polyol component and an isocyanate component;
A pressure- sensitive adhesive having an acrylic polymer chain (hereinafter referred to as an "acrylic component segment") having a molecular chain derived from a (meth)acrylic acid alkyl ester component,
The pressure-sensitive adhesive is formed from a pressure-sensitive adhesive composition containing an isocyanate compound or a hydrogen abstraction type photoinitiator as a cross-linking agent,
A pressure-sensitive adhesive sheet satisfying the following (I) and (II).
(I) Storage modulus at −20° C. (G′(−20° C.)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 300 kPa or less.
(II) The storage elastic modulus at 60°C (G' (60°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 10 kPa or more.
（ａ）前記ウレタン成分セグメント及び前記アクリル成分セグメントが主鎖を構成するブロックポリマー
（ｂ）前記ウレタン成分セグメント又は前記アクリル成分セグメントが主鎖を構成し、他方のセグメントが側鎖を構成するグラフトポリマー
（ｃ）前記ウレタン成分セグメント又は前記アクリル成分セグメントの一方と、他方のセグメントとが架橋している架橋ポリマー The pressure-sensitive adhesive sheet according to any one of claims 1 to 4, wherein the pressure-sensitive adhesive contains one or more polymers of any one of (a) to (c) below.
(a) A block polymer in which the urethane component segment and the acrylic component segment constitute the main chain (b) A graft polymer in which the urethane component segment or the acrylic component segment constitutes the main chain, and the other segment constitutes the side chain (c) a crosslinked polymer in which one of the urethane component segment or the acrylic component segment and the other segment are crosslinked;
（ｄ）アクリルポリマー及びポリエーテル型ポリウレタン
（ｅ）アクリルポリマーを構成する単量体成分の混合物又はその部分重合物及びポリエーテル型ポリウレタン The pressure-sensitive adhesive sheet according to any one of claims 1 to 4, wherein the pressure-sensitive adhesive composition further contains one or more of (d) and (e) below.
(d) Acrylic polymer and polyether polyurethane (e) Mixture of monomer components constituting acrylic polymer or partial polymer thereof and polyether polyurethane
粘着シート。 The pressure-sensitive adhesive sheet according to any one of claims 1 to 8, wherein the pressure-sensitive adhesive contains an initiator and/or a cross-linking agent.
（III）粘着シートの両端を反対方向に引っ張って初期長さの４倍の長さに伸長して、その状態を１０分間保持し、その後、片端を放して２０分間経過後の長さが、初期長さの１．０倍～１．６倍である。 The pressure-sensitive adhesive sheet according to any one of claims 1 to 10, further satisfying (III).
(III) Both ends of the pressure-sensitive adhesive sheet are pulled in the opposite direction and stretched to a length four times the initial length, held in that state for 10 minutes, and then released for 20 minutes after one end is released. 1.0 to 1.6 times the initial length.
（メタ）アクリル酸アルキルエステル成分由来の分子鎖を有するアクリルポリマー鎖（以下、「アクリル成分セグメント」と称する）とを有する粘着剤を含み、
前記粘着剤は、架橋剤としてのイソシアネート化合物又は水素引き抜き型光開始剤を含む粘着剤組成物から形成され、
下記（Ｉ）及び（ＩＩ）を満足する、フレキブルデバイスに用いられる粘着部品。
（Ｉ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる－２０℃の貯蔵弾性率（Ｇ’（－２０℃））が３００ｋＰａ以下。
（ＩＩ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる６０℃の貯蔵弾性率（Ｇ’（６０℃））が１０ｋＰａ以上。 a urethane polymer chain (hereinafter referred to as a "urethane component segment") having a molecular chain having a urethane bond derived from a polyether polyol component and an isocyanate component;
A pressure- sensitive adhesive having an acrylic polymer chain (hereinafter referred to as an "acrylic component segment") having a molecular chain derived from a (meth)acrylic acid alkyl ester component ,
The pressure-sensitive adhesive is formed from a pressure-sensitive adhesive composition containing an isocyanate compound or a hydrogen abstraction type photoinitiator as a cross-linking agent,
An adhesive part used in a flexible device, which satisfies the following (I) and (II) .
(I) Storage modulus at −20° C. (G′(−20° C.)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 300 kPa or less.
(II) The storage elastic modulus at 60°C (G' (60°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 10 kPa or more.
（ａ）前記ウレタン成分セグメント及び前記アクリル成分セグメントが主鎖を構成するブロックポリマー
（ｂ）前記ウレタン成分セグメント又は前記アクリル成分セグメントが主鎖を構成し、他方のセグメントが側鎖を構成するグラフトポリマー
（ｃ）前記ウレタン成分セグメント又は前記アクリル成分セグメントの一方と、他方のセグメントとが架橋している架橋ポリマー The adhesive part used in the flexible device according to any one of claims 13 to 16, wherein the adhesive contains one or more polymers of any one of (a) to (c) below.
(a) A block polymer in which the urethane component segment and the acrylic component segment constitute the main chain (b) A graft polymer in which the urethane component segment or the acrylic component segment constitutes the main chain, and the other segment constitutes the side chain (c) a crosslinked polymer in which one of the urethane component segment or the acrylic component segment and the other segment are crosslinked;
（ｄ）アクリルポリマー及びポリエーテル型ポリウレタン
（ｅ）アクリルポリマーを構成する単量体成分の混合物又はその部分重合物及びポリエーテル型ポリウレタン The pressure-sensitive adhesive is a cured product of a pressure-sensitive adhesive composition containing at least one of (d) and (e) below. adhesive parts.
(d) Acrylic polymer and polyether polyurethane (e) Mixture of monomer components constituting acrylic polymer or partial polymer thereof and polyether polyurethane
前記２つのフレキシブル部材のうち少なくとも１つのフレキシブル部材の表面のハンセン溶解性パラメーターのδｐが１０．０ＭＰａ０．５以上、２０．０ＭＰａ０．５以下であり、
前記粘着層は、ポリエーテルポリオール成分及びイソシアネート成分由来のウレタン結合を有する分子鎖を有するウレタンポリマー鎖（以下、「ウレタン成分セグメント」と称する）と、（メタ）アクリル酸アルキルエステル成分由来の分子鎖を有するアクリルポリマー鎖（以下、「アクリル成分セグメント」と称する）とを有する粘着剤を含み、
前記粘着剤は、架橋剤としてのイソシアネート化合物又は水素引き抜き型光開始剤を含む粘着剤組成物から形成され、
前記粘着層は、下記（Ｉ）及び（ＩＩ）を満足する、フレキシブル画像表示装置部材。
（Ｉ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる－２０℃の貯蔵弾性率（Ｇ’（－２０℃））が３００ｋＰａ以下。
（ＩＩ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる６０℃の貯蔵弾性率（Ｇ’（６０℃））が１０ｋＰａ以上。 A flexible image display device member having a configuration in which two flexible members are bonded together via an adhesive layer,
The surface of at least one of the two flexible members has a Hansen solubility parameter δp of 10.0 MPa or more and 20.0 MPa or less, and
The adhesive layer includes a urethane polymer chain (hereinafter referred to as "urethane component segment") having a molecular chain having a urethane bond derived from a polyether polyol component and an isocyanate component, and a molecular chain derived from a (meth)acrylic acid alkyl ester component. including an acrylic polymer chain (hereinafter referred to as "acrylic component segment") having
The pressure-sensitive adhesive is formed from a pressure-sensitive adhesive composition containing an isocyanate compound or a hydrogen abstraction type photoinitiator as a cross-linking agent,
The flexible image display member, wherein the adhesive layer satisfies the following (I) and (II).
(I) Storage modulus at −20° C. (G′(−20° C.)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 300 kPa or less.
(II) The storage elastic modulus at 60°C (G' (60°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 10 kPa or more.
該部材シート表面のハンセン溶解性パラメーターのδｐが１０．０ＭＰａ０．５以上、２０．０ＭＰａ０．５以下である積層体。 A laminate comprising a member sheet on at least one side of the pressure-sensitive adhesive sheet according to any one of claims 1 to 12,
A laminate having a Hansen Solubility Parameter δp of the member sheet surface of 10.0 MPa or more and 20.0 MPa or less of 0.5.
前記粘着層は、ポリエーテルポリオール成分及びイソシアネート成分由来のウレタン結合を有する分子鎖を有するウレタンポリマー鎖（以下、「ウレタン成分セグメント」と称する）と、（メタ）アクリル酸アルキルエステル成分由来の分子鎖を有するアクリルポリマー鎖（以下、「アクリル成分セグメント」と称する）とを有する粘着剤を含み、
前記粘着剤は、架橋剤としてのイソシアネート化合物又は水素引き抜き型光開始剤を含む粘着剤組成物から形成され、
下記（Ｉ）及び（ＩＩ）を満足し、
該部材シート表面のハンセン溶解性パラメーターのδｐが１０．０ＭＰａ０．５以上、２０．０ＭＰａ０．５以下である、積層体。
（Ｉ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる－２０℃の貯蔵弾性率（Ｇ’（－２０℃））が３００ｋＰａ以下。
（ＩＩ）周波数１Ｈｚの剪断モードで動的粘弾性測定により得られる６０℃の貯蔵弾性率（Ｇ’（６０℃））が１０ｋＰａ以上。 A laminate comprising a member sheet on at least one side of an adhesive layer,
The adhesive layer includes a urethane polymer chain (hereinafter referred to as "urethane component segment") having a molecular chain having a urethane bond derived from a polyether polyol component and an isocyanate component, and a molecular chain derived from a (meth)acrylic acid alkyl ester component. including an acrylic polymer chain (hereinafter referred to as "acrylic component segment") having
The pressure-sensitive adhesive is formed from a pressure-sensitive adhesive composition containing an isocyanate compound or a hydrogen abstraction type photoinitiator as a cross-linking agent,
satisfying the following (I) and (II),
A laminate in which the Hansen solubility parameter δp of the surface of the member sheet is 10.0 MPa or more and 20.0 MPa or less.
(I) The storage modulus at -20°C (G' (-20°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 300 kPa or less.
(II) The storage elastic modulus at 60°C (G' (60°C)) obtained by dynamic viscoelasticity measurement in shear mode at a frequency of 1 Hz is 10 kPa or more.
An image display device comprising the laminate according to any one of claims 24 to 28.
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| JP2020064014 | 2020-03-31 | ||
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| JP2020189730A JP6888730B1 (en) | 2020-03-31 | 2020-11-13 | Adhesive sheet, adhesive parts, flexible image display device member, laminate, image display device |
| JP2021075764A JP7243758B2 (en) | 2020-03-31 | 2021-04-28 | Adhesive sheet, Adhesive part, Flexible image display device member, Laminate, Image display device |
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| JP2021075764A Active JP7243758B2 (en) | 2020-03-31 | 2021-04-28 | Adhesive sheet, Adhesive part, Flexible image display device member, Laminate, Image display device |
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| WO2023096413A1 (en) * | 2021-11-25 | 2023-06-01 | 주식회사 엘지화학 | Adhesive |
| KR20230127798A (en) | 2022-02-25 | 2023-09-01 | 에스케이마이크로웍스솔루션즈 주식회사 | Composite film and display device comprising same |
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| JP2008133408A (en) * | 2006-10-31 | 2008-06-12 | Yasuhara Chemical Co Ltd | Acrylic pressure-sensitive adhesive composition and pressure-sensitive sheet or tape using the composition |
| JP2009242633A (en) * | 2008-03-31 | 2009-10-22 | Lintec Corp | Adhesive sheet for optical use, optical member with adhesive and its manufacturing method |
| JP6337480B2 (en) * | 2014-01-27 | 2018-06-06 | Dic株式会社 | Adhesive tape, articles and electronic equipment |
| JP2016121306A (en) * | 2014-12-25 | 2016-07-07 | 日東電工株式会社 | Adhesive composition, adhesive sheet and optical member |
| JP2017048328A (en) * | 2015-09-03 | 2017-03-09 | 日立化成株式会社 | Transparent adhesive film and image display device |
| JP6767113B2 (en) | 2015-12-29 | 2020-10-14 | 三星エスディアイ株式会社ＳＡＭＳＵＮＧ ＳＤＩ Ｃｏ．， ＬＴＤ． | Adhesive composition and adhesive sheet |
| JP6969235B2 (en) | 2016-09-05 | 2021-11-24 | 荒川化学工業株式会社 | UV curable adhesive, cured product, adhesive sheet |
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