公开(公告)号：US20180029329A1

公开(公告)日：2018-02-01

申请号：US15553142

申请日：2016-02-23

Applicant: Lintec Corporation

Inventor： Chiharu HIRANO ,  Sou MIYATA

IPC: B32B7/06 ,  C08L67/00 ,  B32B7/12 ,  C09J7/02 ,  B32B27/30 ,  B32B27/36

CPC classification number: B32B7/06 ,  B32B7/12 ,  B32B27/00 ,  B32B27/30 ,  B32B27/36 ,  B32B2309/105 ,  C08F20/68 ,  C08L33/06 ,  C08L67/00 ,  C09J7/401 ,  C09J201/00 ,  C09J2433/005 ,  C09J2467/005 ,  C08L33/14

Abstract: A release agent composition may include a polyester resin (A) and an acrylic polymer (B) in which the acrylic polymer (B) may include a structural unit represented by any structural formula disclosed herein, and a ratio of a blending amount of the polyester resin (A) to a blending amount of the acrylic polymer (B) may be in the range of (A):(B)=50:50 to 95:5 in a mass ratio. The release agent composition may be used to form a release sheet for a single-sided pressure-sensitive adhesive sheet or release sheets for a double-sided (faced) pressure-sensitive adhesive sheet. Further, when the release sheet is wound up in a rolled form, it is possible to suppress the release agent composition from transferring to a surface of the base material of the release sheet and to impart an easy peeling property to the release sheet.

公开(公告)号：US20180312729A1

公开(公告)日：2018-11-01

申请号：US15772669

申请日：2016-11-01

Applicant: LINTEC CORPORATION

Inventor： Chiharu HIRANO ,  Sou MIYATA ,  Ryo TAKAHASHI ,  Koji MIYAMOTO

IPC: C09J7/40 ,  C09D109/00

CPC classification number: B32B25/14 ,  B32B27/00 ,  B32B27/30 ,  C09D115/00 ,  C09D133/06 ,  C09J7/00 ,  C09K3/00

Abstract: The release agent composition of the invention contains a rubber elastomer (A) and an acrylic polymer (B) containing a structural unit derived from a long-chain alkyl (meth)acrylate (b1) represented by the following formula (1): wherein R1 represents a hydrogen atom or a methyl group, and R2 represents a branched alkyl group having 10 to 30 carbon atoms.

公开(公告)号：US20170327715A1

公开(公告)日：2017-11-16

申请号：US15522751

申请日：2015-10-28

Applicant: Lintec Corporation

Inventor： Sou MIYATA ,  Chiharu HIRANO ,  Ryo TAKAHASHI ,  Koji MIYAMOTO

IPC: C09J7/02 ,  B32B27/40 ,  B32B7/12 ,  B32B27/36

Abstract: A release sheet 1 may include a base material 12 and a release agent layer 11 provided on the base material 12. The release agent layer 11 is composed of a cured product of a release agent composition containing 50 mass % or more of a diene-based polymer. Mooney viscosity (ML1+4 (100° C.)) of the diene-based polymer measured at 100° C. according to HS K6300 is in the range of 25 to 70, and a ratio (TCp/ML1+4 (100° C.)) of the Mooney viscosity (ML1+4 (100° C.)) and a viscosity (TCp) of a toluene solution of the diene-based polymer is 2.2 or less. This makes it possible to provide a release sheet which can sufficiently suppress adverse effects on electric components and the like, which has a small dependence of release force on peel rate and which can suppress the occurrence of zipping phenomenon, and a pressure-sensitive adhesive article having such a release sheet.