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：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：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：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.

公开(公告)号：US20200030194A1

公开(公告)日：2020-01-30

申请号：US16588283

申请日：2019-09-30

Applicant: Mitsui Chemicals, Inc. ,  Sun Medical Co., Ltd.

Inventor： Kazuhiko YOSHINAGA ,  Yoshimitsu TANABE ,  Shinsuke KINOSHITA ,  Takenori MITAMURA ,  Hiroki MURAI ,  Takeshi YOKOYAMA ,  Yoshihisa KAMIMOTO ,  Tatsuya ORI ,  Hirohisa SHIMIZU ,  Masami ARATA ,  Masuji TSUCHIKAWA ,  Sayaka MIYAMORI ,  Yoshiaki KATSURA

IPC: A61K6/00 ,  A61K6/083 ,  C07C271/20

Abstract: A dental adhesive curable composition containing a polymerizable monomer including a polymerizable monomer represented by formula (1′) and defined amounts of an acidic group-containing polymerizable monomer, a polymerization initiator containing a peroxide and a photopolymerization initiator, and a reductant containing a sulfinic acid compound and/or a salt thereof, and a filler: wherein the R groups, n and m are defined. A dental adhesive curable kit and a mobile tooth fixing material are also provided.

公开(公告)号：US20180110683A1

公开(公告)日：2018-04-26

申请号：US15561339

申请日：2016-03-31

Applicant: MITSUI CHEMICALS, INC. ,  SUN MEDICAL CO., LTD.

Inventor： Kazuhiko YOSHINAGA ,  Yoshimitsu TANABE ,  Shinsuke KINOSHITA ,  Takenori MITAMURA ,  Hiroki MURAI ,  Takeshi YOKOYAMA ,  Yoshihisa KAMIMOTO ,  Tatsuya ORI ,  Hirohisa SHIMIZU ,  Masami ARATA ,  Masuji TSUCHIKAWA ,  Sayaka MIYAMORI ,  Yoshiaki KATSURA

IPC: A61K6/00 ,  C07C271/20

CPC classification number: A61K6/0023 ,  A61K6/00 ,  A61K6/0052 ,  A61K6/083 ,  C07C271/20 ,  C07C2602/42

Abstract: The present invention provides polymerizable monomers represented by the following general formula (1) that are useful as dental materials. In the general formula (1), Ra is a divalent C6-9 aromatic hydrocarbon group or a divalent C6-9 optionally bridged cyclic hydrocarbon group, R1 and R2 are each a hydrogen atom or a C1-3 alkyl group, R3, R4, R5 and R6 are each a hydrogen atom or a hydrocarbon group, R7 and R8 are each a hydrogen atom or a methyl group, m and n are each independently 0 to 4, and Rb and Rc are each independently a C2-6 linear alkylene or C2-6 linear oxyalkylene group optionally substituted with a C1-3 alkyl group or a (meth)acryloyloxymethylene group in place of a hydrogen atom.