公开(公告)号：US20220089871A1

公开(公告)日：2022-03-24

申请号：US17426091

申请日：2020-02-05

Applicant: Sunstar Engineering Inc.

Inventor： Takuro OMACHI ,  Tomohiro YAMAGUCHI

IPC: C08L75/08 ,  C08L83/06

Abstract: Excellent adhesiveness to resin substrates is provided even with a reduced pretreatment, preferably without a pretreatment, by a curable composition comprising an urethane prepolymer (A) having a polyoxyalkylene backbone and an isocyanate group, and an urethane prepolymer (B) having a polycarbonate and/or polyester backbone and an isocyanate group.

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：US20220410198A1

公开(公告)日：2022-12-29

申请号：US17847609

申请日：2022-06-23

Applicant: SUNSTAR ENGINEERING INC.

Inventor： Takuro OMACHI ,  Masaharu TAKADA ,  Kiichi YAMASHITA

IPC: B05B12/08 ,  B05B7/00 ,  B05B7/02

Abstract: A dispenser for discharging a mixture of gas and paste material includes: a nozzle part (2) provided in a tip end part of a body (11) and having a tip end opening; a flow path (4) for the mixture extending from an introduction part (5) for the mixture to the tip end opening through a hollow space of the nozzle part; a needle part (3) movable in the flow path of the nozzle part to open and close the flow path; a driving part (7, 8, and 9) that drives the needle part; and a stopper part (10, 14, and 16) that limits an operation range of the needle part. The nozzle part has a tapered section in which an inside diameter of the flow path of the nozzle part relative to an operation range of a tip end of the needle part decreases toward the tip end opening.

公开(公告)号：US20180264421A1

公开(公告)日：2018-09-20

申请号：US15534760

申请日：2016-02-05

Applicant: SUNSTAR ENGINEERING INC.

Inventor： Takayoshi NAKANISHI ,  Toshifumi YAMASHITA ,  Takuro OMACHI ,  Hiroyuki NAGATA

IPC: B01F5/04 ,  B01F3/04 ,  B01F15/02 ,  B01F15/04 ,  B29C44/34

Abstract: A gas mixing apparatus includes: a discharge port of gas provided near conduit space through which the high-viscosity material can flow; a piston pump including a cylinder that can communicate with the conduit space through the discharge port, a piston arranged inside the cylinder, and a drive device for moving the piston between a top dead center and a bottom dead center inside the cylinder; a discharge valve that opens and closes the discharge port; and a suction valve that opens and closes a suction port of the gas into a cylinder space, in which the cylinder forms the cylinder space having a predetermined volume when the piston is located at the top dead center, and in which a tip of the piston approaches the discharge port when the piston is moved toward the bottom dead center.

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.

公开(公告)号：US20190184355A1

公开(公告)日：2019-06-20

申请号：US16323104

申请日：2017-08-02

Applicant: SUNSTAR ENGINEERING INC.

Inventor： Takuro OMACHI ,  Hiroyuki NAGATA

IPC: B01F15/02 ,  B01F3/04 ,  B01F5/06

CPC classification number: B01F15/02 ,  B01F3/04 ,  B01F5/00 ,  B01F5/06

Abstract: An apparatus (1) for mixing a paste material with gas includes: a mixing part (2) that mixes the paste material with the gas using a piston pump (10); and a static mixer (3) that is connected to the mixing part to stir a mixture obtained by mixing the paste material with the gas in the mixing part. The static mixer includes one or a plurality of stirring sections through which the mixture passes, the stirring section has a shape that allows a flow of the mixture passing through the stirring section to be stirred. A ratio of a volume of the piston pump to a volume of at least one of the stirring sections of the static mixer is within a range from 1:0.2 to 1:5.