公开(公告)号：US20190136091A1

公开(公告)日：2019-05-09

申请号：US16094305

申请日：2017-03-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki Okamoto ,  Satoshi Mita ,  Yoshimi Konno ,  Taiyan Jiang ,  Tetsuro Ikeda

IPC: C09J4/00 ,  G02B5/30 ,  G02F1/13363

Abstract: An active-energy-ray-curable adhesive composition comprises at least one or more radical polymerizable compounds. At the time of defining a total amount of the radical polymerizable compound(s) as 100% by weight, the composition comprises one or more alkyl (meth) acrylates (A) (each) having 10 to 20 carbon atoms in an amount of 15% or more by weight. The active-energy-ray-curable adhesive composition preferably comprises, as the alkyl (meth)acrylate(s) (A), an alkyl (meth)acrylate (A1) having 10 to 14 carbon atoms, and an alkyl (meth)acrylate (A2) having 15 to 20 carbon atoms. A ratio by weight of the component (A1) to the component (A2) (A1/A2) is preferably from 1.0/9.0 to 4.0/6.0.

公开(公告)号：US20220106500A1

公开(公告)日：2022-04-07

申请号：US17355292

申请日：2021-06-23

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki Okamoto ,  Satoshi Mita ,  Yoshimi Konno ,  Taiyan Jiang ,  Tetsuro Ikeda

IPC: C09J4/00 ,  G02F1/1335 ,  G02F1/13363 ,  G02B5/30 ,  C08F2/48

Abstract: An active-energy-ray-curable adhesive composition comprises at least one or more radical polymerizable compounds. At the time of defining a total amount of the radical polymerizable compound(s) as 100% by weight, the composition comprises one or more alkyl (meth)acrylates (A) (each) having 10 to 20 carbon atoms in an amount of 15% or more by weight. The active-energy-ray-curable adhesive composition preferably comprises, as the alkyl (meth)acrylate(s) (A), an alkyl (meth)acrylate (A1) having 10 to 14 carbon atoms, and an alkyl (meth)acrylate (A2) having 15 to 20 carbon atoms. A ratio by weight of the component (A1) to the component (A2) (A1/A2) is preferably from 1.0/9.0 to 4.0/6.0.

公开(公告)号：US10858553B2

公开(公告)日：2020-12-08

申请号：US16094293

申请日：2017-03-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki Okamoto ,  Satoshi Mita ,  Yoshimi Konno ,  Taiyan Jiang ,  Tetsuro Ikeda

IPC: C09J139/04 ,  B32B7/12 ,  C09J5/00 ,  C09J133/06 ,  C09J133/14 ,  B32B37/12 ,  G02B5/30 ,  G02B1/14 ,  G02F1/1335

Abstract: A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both surfaces of a polarizer, and transparent protective films. The adhesive layer (a) on/over one of both the surfaces has a glass transition temperature of −60° C. or higher and lower than 40° C. The adhesive layer (b) on/over the other surface has a glass transition temperature of 40° C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises, as radical polymerizable compounds, a component A having a logPow of −2 to 2, and a component B having a logPow more than 7, these logPow values being each an octanol/water distribution coefficient.

公开(公告)号：US20190106599A1

公开(公告)日：2019-04-11

申请号：US16094061

申请日：2017-03-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki Okamoto ,  Satoshi Mita ,  Yoshimi Konno ,  Taiyan Jiang ,  Tetsuro Ikeda

IPC: C09J4/00 ,  C09J133/06 ,  C09J133/24 ,  C09J135/02 ,  C09J133/14 ,  C09J5/00 ,  C09J11/06 ,  G02B1/14 ,  G02B5/30

Abstract: An active-energy-ray-curable adhesive composition comprises at least radical polymerizable compounds. The radical polymerizable compounds comprise a component A having a log Pow of −2 to 2, and a component B having a log Pow more than 7, each of these log Pow values representing an octanol/water distribution coefficient. The component A preferably comprises at least one nitrogen-containing monomer selected from the group consisting of (meth)acrylamide derivatives, amino-group-containing monomers, and nitrogen-containing and heterocycle-containing vinyl monomers. The component B preferably comprises an alkyl (meth)acrylate having 18 to 20 carbon atoms.

公开(公告)号：US10901129B2

公开(公告)日：2021-01-26

申请号：US16094303

申请日：2017-03-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki Okamoto ,  Satoshi Mita ,  Yoshimi Konno ,  Taiyan Jiang ,  Tetsuro Ikeda

IPC: C09J4/00 ,  C09J133/00 ,  B32B7/12 ,  C09J11/06 ,  G02B5/30 ,  G02F1/1335 ,  B29D11/00 ,  G02F1/13363 ,  C09J7/38

Abstract: A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both the surfaces and the transparent protective films. The adhesive layer (a) has a glass transition temperature of −60° C. or higher and lower than 40° C. The adhesive layer (b) has a glass transition temperature of 40° C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises at least one or more radical polymerizable compounds, and when a total amount of the radical polymerizable compound(s) is defined as 100% by weight, one or more alkyl (meth)acrylates (A) (each) having 10 to 20 carbon atoms are comprised in a proportion of 15% or more by weight.

公开(公告)号：US20190137673A1

公开(公告)日：2019-05-09

申请号：US16094303

申请日：2017-03-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki Okamoto ,  Satoshi Mita ,  Yoshimi Konno ,  Taiyan Jiang ,  Tetsuro Ikeda

IPC: G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  B29D11/00

Abstract: A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both the surfaces and the transparent protective films. The adhesive layer (a) has a glass transition temperature of -60° C. or higher and lower than 40° C. The adhesive layer (b) has a glass transition temperature of 40° C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises at least one or more radical polymerizable compounds, and when a total amount of the radical polymerizable compound(s) is defined as 100% by weight, one or more alkyl (meth)acrylates (A) (each) having 10 to 20 carbon atoms are comprised in a proportion of 15% or more by weight.

公开(公告)号：US20210317337A1

公开(公告)日：2021-10-14

申请号：US17352429

申请日：2021-06-21

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki Okamoto ,  Satoshi Mita ,  Yoshimi Konno ,  Taiyan Jiang ,  Tetsuro Ikeda

IPC: C09J4/00 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  C09J11/06 ,  G02B1/14 ,  C09J5/00 ,  C09J133/06 ,  C09J133/14 ,  C09J133/24 ,  C09J135/02

Abstract: An active-energy-ray-curable adhesive composition comprises at least radical polymerizable compounds. The radical polymerizable compounds comprise a component A having a log Pow of −2 to 2, and a component B having a log Pow more than 7, each of these log Pow values representing an octanol/water distribution coefficient. The component A preferably comprises at least one nitrogen-containing monomer selected from the group consisting of (meth)acrylamide derivatives, amino-group-containing monomers, and nitrogen-containing and heterocycle-containing vinyl monomers. The component B preferably comprises an alkyl (eth)acrylate having 18 to 20 carbon atoms.

公开(公告)号：US20190331838A1

公开(公告)日：2019-10-31

申请号：US16468469

申请日：2017-11-29

Applicant: NITTO DENKO CORPORATION

Inventor： Yoshimi Konno ,  Hironori Yaginuma ,  Akinori Izaki ,  Yoshitsugu Kitamura

IPC: G02B5/30 ,  G02F1/1335 ,  B32B7/02

Abstract: There is provided an optical laminate that can improve viewability by suppressing a hue change in accordance with the angle of polarized sunglasses. An optical laminate of the present invention includes: a first retardation layer; a second retardation layer; a polarizer; and a third retardation layer. The first retardation layer, the second retardation layer, the polarizer, and the third retardation layer is laminated from a viewer side in the stated order.

公开(公告)号：US20190136101A1

公开(公告)日：2019-05-09

申请号：US16094293

申请日：2017-03-06

Applicant: NITTO DENKO CORPORATION

Inventor： Masayuki Okamoto ,  Satoshi Mita ,  Yoshimi Konno ,  Taiyan Jiang ,  Tetsuro Ikeda

IPC: C09J139/04 ,  C09J133/06 ,  C09J133/14 ,  C09J5/00 ,  G02B1/14 ,  G02B5/30 ,  B32B7/12 ,  B32B37/12

Abstract: A polarizing film, wherein transparent protective films are laid, respectively, on/over both surfaces of a polarizer to interpose an adhesive layer (a) and an adhesive layer (b), respectively, between both surfaces of a polarizer, and transparent protective films. The adhesive layer (a) on/over one of both the surfaces has a glass transition temperature of −60° C. or higher and lower than 40° C. The adhesive layer (b) on/over the other surface has a glass transition temperature of 40° C. or higher. The adhesive layer (a) is a layer formed in the form of a cured product layer yielded by radiating an active energy ray to an active-energy-ray-curable adhesive composition (a). The active-energy-ray-curable adhesive composition (a) comprises, as radical polymerizable compounds, a component A having a logPow of −2 to 2, and a component B having a logPow more than 7, these logPow values being each an octanol/water distribution coefficient.