公开(公告)号：US20240199929A1

公开(公告)日：2024-06-20

申请号：US18413602

申请日：2024-01-16

Applicant: AGC Inc.

Inventor： Hitoshi SHIMOMA ,  Makito NAKAMURA ,  Chitoshi SUZUKI

IPC: C09J175/08 ,  C08G18/10 ,  C08G18/48

CPC classification number: C09J175/08 ,  C08G18/10 ,  C08G18/485 ,  C08G2170/00 ,  C09J2475/00

Abstract: There is provided a two-component adhesive composition that is excellent in the tensile characteristics of a cured product, has a small temperature dependence of viscoelastic characteristics (storage modulus), and can stably exhibit adhesiveness in a wide temperature region, and a cured product. A two-component adhesive composition including: a main agent including an isocyanate group-terminated urethane prepolymer; and a curing agent including a polyoxyalkylene polymer in which a number of functional groups is 4 or more, wherein a number average molecular weight of the polyoxyalkylene polymer is 6000 or more.

公开(公告)号：US20210371574A1

公开(公告)日：2021-12-02

申请号：US17399512

申请日：2021-08-11

Applicant: AGC Inc.

Inventor： Makito NAKAMURA ,  Haru KAWASAKI ,  Hitoshi SHIMOMA ,  Chitoshi SUZUKI ,  Hiroshi WADA

IPC: C08G18/12 ,  C09J7/38 ,  C09J175/08 ,  C08G18/48 ,  A61B5/00

Abstract: To provide a polyurethane prepolymer whereby a pressure-sensitive adhesive having excellent moisture permeability and also having both low adhesion to skin and high adhesion to a substrate can be obtained, a pressure-sensitive adhesive, an adhesive skin patch, a pressure-sensitive adhesive tape, a wearable device and a wearable device kit.
A hydroxy group-terminated polyurethane prepolymer which is obtained by reacting an oxyalkylene polymer A having an average number of hydroxy groups per molecule of from 2.1 to 3, an oxyalkylene polymer B having one hydroxy group per molecule, and a diisocyanate compound, wherein the number average molecular weight of the oxyalkylene polymer B is at least 5,000, and the content of ethylene oxide units in the hydroxy group-terminated polyurethane prepolymer is more than 10 mass %, a pressure-sensitive adhesive, an adhesive skin patch, a pressure-sensitive adhesive tape, a wearable device and a wearable device kit.

公开(公告)号：US20250092291A1

公开(公告)日：2025-03-20

申请号：US18964054

申请日：2024-11-29

Applicant: AGC Inc.

Inventor： Shogo FUJISAKI ,  Hitoshi SHIMOMA ,  Xuhui LIU ,  Takashi ITO ,  Yoshitaka SUNAYAMA ,  Makito NAKAMURA

IPC: C09J171/02 ,  B32B7/12 ,  B32B27/08 ,  B32B27/16 ,  B32B27/32

Abstract: The present invention provides an adhesive composition excellent in adhesiveness to resin materials, and an article containing a cured product of the adhesive composition. The adhesive composition of the present invention includes a polyether polycarbonate diol that has a number average molecular weight of 500 to 10000, and has no specific reactive silicon group, or a polyether polycarbonate polymer (A) having the specific reactive silicon group.

公开(公告)号：US20240199930A1

公开(公告)日：2024-06-20

申请号：US18413658

申请日：2024-01-16

Applicant: AGC Inc.

Inventor： Hitoshi SHIMOMA ,  Makito NAKAMURA ,  Chitoshi SUZUKI

IPC: C09J175/08 ,  C08G18/10

CPC classification number: C09J175/08 ,  C08G18/10 ,  C08G2170/00 ,  C08J2475/00

Abstract: There is provided a one-component adhesive composition that is excellent in the heat resistance, moist heat resistance, and creep resistance at high temperature (90° C.) of a cured product, can maintain adhesiveness even under high temperature, has a small temperature dependence of viscoelastic characteristics (storage modulus), and can stably exhibit adhesiveness in a wide temperature region, and a cured product. A one-component adhesive composition including an isocyanate group-terminated urethane prepolymer obtained by reacting a polyoxyalkylene polymer with a polyisocyanate compound, wherein the polyoxyalkylene polymer has a functional group that can react with an isocyanate group, and has a number average molecular weight of 8000 or more, and in the polyoxyalkylene polymer, a content proportion of oxyethylene groups to a total amount of oxyalkylene groups is 5% by mass or more and 60% by mass or less.