公开(公告)号：US20240301243A1

公开(公告)日：2024-09-12

申请号：US18564846

申请日：2022-05-30

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Shinji KAWADA ,  Tomoki TODA ,  Shuuji KAGE ,  Chiharu OKUHARA ,  Kaito NEMOTO

IPC: C09J4/00 ,  B32B7/12 ,  B32B37/12 ,  C08F220/18 ,  C08F220/28 ,  C09J5/00 ,  C09J133/06 ,  C09J133/14

CPC classification number: C09J4/00 ,  B32B7/12 ,  B32B37/1284 ,  C08F220/1809 ,  C08F220/1811 ,  C08F220/282 ,  C09J5/00 ,  C09J133/062 ,  C09J133/14 ,  B32B2037/1253 ,  B32B2255/26 ,  B32B2307/558 ,  B32B2307/748 ,  C08F2810/20 ,  C09J2433/00

Abstract: The present invention aims to provide a UV-curable composition having excellent printability, excellent UV reactivity in the presence of oxygen, and excellent adhesiveness at room temperature and high temperature. Provided is a UV-curable composition containing: a curing component containing a (meth)acrylate monomer and a crosslinking component; and a UV curing agent, the (meth)acrylate monomer including, in 100% by weight of the curing component, 50 to 85% by weight of a monomer that, in a form of a homopolymer, has a glass transition temperature of −70° C. to −30° C., a cured product being obtained by applying the composition to a substrate at a thickness of 150 μm and irradiating the composition, without sealing an upper surface of the applied composition, with UV light having a wavelength of 315 nm to 480 nm at an irradiance of 90 mW/cm2 and a dose of 1,350 mJ/cm2 in an atmospheric environment, the cured product having a gel fraction of 0.4 to 78%, a glass transition temperature of −35° C. to 10° C., a reaction percentage of 83% or higher, and a reaction progress percentage on a surface facing the atmosphere of 93% or higher relative to a surface facing the substrate.

公开(公告)号：US20240271019A1

公开(公告)日：2024-08-15

申请号：US18565754

申请日：2022-05-30

Applicant: SEKISUI CHEMICAL CO., LTD.

Inventor： Shinji KAWADA ,  Tomoki TODA ,  Shuuji KAGE ,  Chiharu OKUHARA ,  Kaito NEMOTO

IPC: C09J133/10 ,  C08F2/44 ,  C08F2/50 ,  C08F220/18 ,  C09J4/00 ,  C09J11/06 ,  C09J11/08

CPC classification number: C09J133/10 ,  C08F2/44 ,  C08F2/50 ,  C08F220/1811 ,  C09J4/00 ,  C09J11/06 ,  C09J11/08

Abstract: The present invention aims to provide a UV-curable adhesive composition having excellent printability, excellent UV reactivity in the presence of oxygen, and excellent adhesion to various substrates. The present invention also aims to provide an adhesive containing the UV-curable adhesive composition. Provided is a UV-curable adhesive composition containing: (A) a nitrogen-containing monomer; (B) a monofunctional (meth)acrylate monomer; (C) a crosslinking component; (D) a photopolymerization initiator; and (E) a thermoplastic resin having no reactivity with the nitrogen-containing monomer (A) nor with the monofunctional (meth)acrylate monomer (B), a cured product being obtained by applying the composition to a substrate at a thickness of 150 μm and irradiating the composition with UV light having a wavelength of 315 nm to 480 nm at an irradiance of 90 mW/cm2 and a dose of 1,350 mJ/cm2 in an atmospheric environment, the cured product having a reaction percentage of 80% or higher on both a surface facing the atmosphere and a surface facing the substrate.