公开(公告)号：US20240166794A1

公开(公告)日：2024-05-23

申请号：US18282564

申请日：2022-03-23

Applicant: Sunstar Engineering Inc.

Inventor： Takuro OMACHI ,  Akimi EBATA

IPC: C08G18/67 ,  C08G18/24 ,  C08G18/48 ,  C08G18/73 ,  C08G18/75 ,  C08J9/30

CPC classification number: C08G18/672 ,  C08G18/242 ,  C08G18/244 ,  C08G18/4808 ,  C08G18/4825 ,  C08G18/73 ,  C08G18/755 ,  C08J9/30 ,  C08J2375/16

Abstract: Provided are: a photocurable composition capable of forming a sealant composed of a foam endowed with excellent elongation and excellent tensile strength by being cured while foamed; a photocurable foam composition in which gas bubbles are included in the aforementioned photocurable composition; a urethane (meth)acrylate compound that is suitably used as a component of the aforementioned photocurable composition; and a method for producing a foam using the abovementioned photocurable composition. In this photocurable composition, which contains a urethane (meth)acrylate (A) and a photopolymerization initiator (C), a urethane (meth)acrylate compound having a specific structure that includes a urethane bond, has a polyether chain having a molecular weight within a specific range in the center, and has (meh) acryloyloxy groups at both ends of a linear polyether chain is used as the urethane (meth)acrylate (A).

公开(公告)号：US20250011521A1

公开(公告)日：2025-01-09

申请号：US18444929

申请日：2024-02-19

Applicant: Sunstar Engineering Inc.

Inventor： Takuro OMACHI ,  Akimi EBATA ,  Hiroyuki NAGATA

IPC: C08G18/12 ,  C08G18/48 ,  C08G18/50 ,  C08G18/61 ,  C08G77/14 ,  C08G101/00 ,  C08K5/00 ,  C08K5/17 ,  C08K5/42

Abstract: A curable composition used to produce a polyurethane foam comprises an isocyanate group-containing urethane pre-polymer (I) having an oxyalkylene ether skeleton and no siloxane skeleton, and an isocyanate group-containing urethane pre-polymer (II) having a siloxane skeleton and an oxyalkylene ether skeleton.

公开(公告)号：US20200079892A1

公开(公告)日：2020-03-12

申请号：US16469806

申请日：2016-12-26

Applicant: Sunstar Engineering Inc.

Inventor： Takuro OMACHI ,  Akimi EBATA ,  Hiroyuki NAGATA

IPC: C08G18/12 ,  C08G18/61 ,  C08G18/48 ,  C08G77/14 ,  C08K5/00 ,  C08K5/17 ,  C08K5/42

Abstract: A curable composition used to produce a polyurethane foam comprises an isocyanate group-containing urethane pre-polymer (I) having an oxyalkylene ether skeleton and no siloxane skeleton, and an isocyanate group-containing urethane pre-polymer (II) having a siloxane skeleton and an oxyalkylene ether skeleton.