公开(公告)号：US20210169749A1

公开(公告)日：2021-06-10

申请号：US16634017

申请日：2018-08-07

Applicant: MITSUI CHEMICALS, INC.

Inventor： Takenori MITAMURA ,  Yoko KOSUGI

IPC: A61K6/893 ,  C08F222/38 ,  A61K6/62 ,  A61K6/86 ,  A61K6/836 ,  A61K6/30 ,  A61K6/20 ,  A61K6/891 ,  A61K6/84 ,  A61K6/887

Abstract: Provided is a curable composition that has a sufficient pot life and does not cause a significant delay in curing time even after long-term storage at room temperature or higher. A separately packed curable composition includes: (A) a first pack containing: (a1) a polymerizable monomer having no acidic group, (b) a polymerizable monomer having an acidic group, and (c) a transition metal compound; and (B) a second pack containing: (a2) a polymerizable monomer having no acidic group, (d) an aromatic amine compound, and (e) at least one compound selected from sulfinic acid and a salt thereof.

公开(公告)号：US20230323084A1

公开(公告)日：2023-10-12

申请号：US18336172

申请日：2023-06-16

Applicant: MITSUI CHEMICALS, INC.

Inventor： Takenori MITAMURA ,  Yoko KOSUGI

IPC: C08K5/3445 ,  C08F4/10 ,  C08F20/10 ,  C08K5/00 ,  C08K5/092 ,  C08K5/14

CPC classification number: C08K5/3445 ,  C08F4/10 ,  C08F20/10 ,  C08K5/0025 ,  C08K5/092 ,  C08K5/14

Abstract: Provided is a polymerization initiator, which has an excellent curing rate and is an alternative to a polymerization initiator system using a benzoyl peroxide-aromatic amine compound, a curable composition containing the polymerization initiator, a dental material and dental filler material containing the composition, and a kit for preparing the curable composition. The polymerization initiator contains one or more compounds (A) selected from the group consisting of a pyrazolidinedione compound and/or pyrazolidine(di)thione compound (A1), a salt (A2) of the compound (A1), and a malonate compound (A3).

公开(公告)号：US20210378919A1

公开(公告)日：2021-12-09

申请号：US17408804

申请日：2021-08-23

Applicant: MITSUI CHEMICALS, INC.

Inventor： Yoko KOSUGI ,  Akiko MATSUMOTO ,  Kazuhiko YOSHINAGA

IPC: A61K6/887 ,  C07C271/16 ,  A61K6/40 ,  C07C275/10 ,  A61K6/30

Abstract: Provided are monomers useful for dental materials that include a compound in which a core and a specific terminal group are bonded to each other directly or via a linking group, wherein the core is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group or the linking group is the oxygen atom or the nitrogen atom; the terminal group is a specific (meth)acryloyl group-containing group, a (meth)acryloyl group, a C1-20 hydrocarbon group or a hydrogen atom, and the terminal group needs to meet specific requirements; and the linking group is a specific divalent group, and when the compound contains a plurality of linking groups, the linking groups may be the same as or different from each other. Compositions, dental materials and kits are also provided.

公开(公告)号：US20210130580A1

公开(公告)日：2021-05-06

申请号：US17057188

申请日：2019-08-02

Applicant: MITSUI CHEMICALS, INC.

Inventor： Takenori MITAMURA ,  Yoko KOSUGI

IPC: C08K5/3445 ,  C08F20/10 ,  C08F4/10 ,  C08K5/00 ,  C08K5/14 ,  C08K5/092

Abstract: Provided is a polymerization initiator, which has an excellent curing rate and is an alternative to a polymerization initiator system using a benzoyl peroxide-aromatic amine compound, a curable composition containing the polymerization initiator, a dental material and dental filler material containing the composition, and a kit for preparing the curable composition. The polymerization initiator contains one or more compounds (A) selected from the group consisting of a pyrazolidinedione compound and/or pyrazolidine(di)thione compound (A1), a salt (A2) of the compound (A1), and a malonate compound (A3).

公开(公告)号：US20170183432A1

公开(公告)日：2017-06-29

申请号：US15117015

申请日：2015-02-10

Applicant: MITSUI CHEMICALS, INC.

Inventor： Koji ENDO ,  Mayumi HIWARA ,  Sadahiko MATSUURA ,  Yoko KOSUGI ,  Yuichi YAMAMURA ,  Yusuke MIZOBUCHI

IPC: C08F210/16

CPC classification number: C08F210/16 ,  C08F4/65908 ,  C08F4/65912 ,  C08F4/65927 ,  C08F210/06 ,  C08F210/08 ,  C08F2500/12 ,  C08F2500/17 ,  C08F2500/08 ,  C08F210/14 ,  C08F2/06

Abstract: A process capable of producing an ethylene/α-olefin copolymer having a high molecular weight even under the conditions of a high polymerization temperature is provided. The process for producing an ethylene/α-olefin copolymer includes copolymerizing ethylene and an α-olefin having 3 or more carbon atoms in the presence of an olefin polymerization catalyst including a crosslinked metallocene compound (A) represented by the following general formula [I] and a cocatalyst component (B). In the general formula [I], Y is selected from a carbon atom, etc., M is a hafnium atom or the like, R1 to R12 are each selected from a hydrogen atom, a hydrocarbon group, etc., R13 and R14 are each a substituted aryl group or the like, at least one of R13 and R14 is a substituted aryl group having one or more electron-donating substituents having a Hammett substituent constant σ of not more than −0.2, Q is selected from a halogen atom, etc., and j is an integer of 1 to 4.

公开(公告)号：US20230363982A1

公开(公告)日：2023-11-16

申请号：US18245050

申请日：2021-09-15

Applicant: MITSUI CHEMICALS, INC. ,  SDC TECHNOLOGIES INC. ,  KULZER GMBH

Inventor： Hideyuki ITO ,  Yoko KOSUGI ,  James Myoungsouk JANG ,  Ren-Zhi JIN ,  Sapna BLACKBURN ,  Klaus RUPPERT ,  Andreas GRUNDLER ,  Andrea HAMBACH

IPC: A61K6/20 ,  A61K6/62 ,  A61K6/71 ,  A61C13/09 ,  A61C13/00 ,  A61C13/15

CPC classification number: A61K6/20 ,  A61K6/62 ,  A61K6/71 ,  A61C13/09 ,  A61C13/0006 ,  A61C19/003

Abstract: Dental coating compositions that have one or more of excellent properties including plaque resistance, microbial plaque resistance, strong adhesion, excellent hardness, high wear resistance, and high color resistance are provided. Dental appliance or natural tooth covered by the dental coating compositions, and production methods of the dental coating compositions are also provided. The coating compositions include one or more of a trifunctional or higher multifunctional (meth)acrylate monomer, an inorganic filler, a photoinitiator, and an organic solvent. The coating compositions are substantially free from antibacterial chemical additives.

公开(公告)号：US20210338537A1

公开(公告)日：2021-11-04

申请号：US17286838

申请日：2019-12-24

Applicant: MITSUI CHEMICALS, INC.

Inventor： Takenori MITAMURA ,  Yoko KOSUGI

IPC: A61K6/887 ,  C08L33/10 ,  A61K6/30

Abstract: A monomer composition for a dental material including a compound represented by Formula (1). In Formula (1), X represents an n-valent organic group having from 1 to 200 carbon atoms and containing at least one selected from the group consisting of an oxygen atom and a nitrogen atom, in which the at least one selected from the group consisting of an oxygen atom and a nitrogen atom is bound to Y; and each Y represents a (meth)acryloyl group-containing group (Y1) represented by the following Formula (A), a (meth)acryloyl group (Y2), a hydrogen atom, or a hydrocarbon group having from 1 to 20 carbon atoms, with the proviso that at least one or more Y, among all Ys included in the compound represented by Formula (1), is the (meth)acryloyl group-containing group (Y1).

公开(公告)号：US20210161771A1

公开(公告)日：2021-06-03

申请号：US17166135

申请日：2021-02-03

Applicant: MITSUI CHEMICALS, INC.

Inventor： Yoko KOSUGI ,  Akiko MATSUMOTO ,  Kazuhiko YOSHINAGA

IPC: A61K6/887 ,  C07C271/16 ,  A61K6/40 ,  C07C275/10 ,  A61K6/30

Abstract: Provided are monomers useful for dental materials that include a compound in which a core and a specific terminal group are bonded to each other directly or via a linking group, wherein the core is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group or the linking group is the oxygen atom or the nitrogen atom; the terminal group is a specific (meth)acryloyl group-containing group, a (meth)acryloyl group, a C1-20 hydrocarbon group or a hydrogen atom, and the terminal group needs to meet specific requirements; and the linking group is a specific divalent group, and when the compound contains a plurality of linking groups, the linking groups may be the same as or different from each other. Compositions, dental materials and kits are also provided.

公开(公告)号：US20200291157A1

公开(公告)日：2020-09-17

申请号：US16753086

申请日：2018-10-25

Applicant: MITSUI CHEMICALS, INC.

Inventor： Takenori MITAMURA ,  Yoko KOSUGI

IPC: C08F222/22 ,  A61K6/73

Abstract: An object of the present invention is to provide a curable composition having sufficient polymerization properties even under acidic conditions. The curable composition of the present invention includes (a) a polymerizable monomer having an acidic group, (b) a transition metal compound, (c) at least one compound selected from benzoxazole compounds and benzothiazole compounds, and (d) a reducing agent.