公开(公告)号：US20180014919A1

公开(公告)日：2018-01-18

申请号：US15547217

申请日：2016-02-01

申请人： MITSUI CHEMICALS, INC.

发明人： Toshikazu GOMI ,  Takashi KOURA ,  Hirohisa SHIODE ,  Mai KIMURA

IPC分类号： A61C13/01 ,  A61C13/10 ,  A61C13/00

摘要： The present invention provides a photocurable composition which is used for the production by stereolithography of a dental prosthesis or the like. This photocurable composition contains a (meth)acrylic monomer component and a photopolymerization initiator; and the (meth)acrylic monomer component contains: an acrylic monomer (X) containing, within one molecule, two aromatic rings and two acryloyloxy groups, and having a Mw of from 400 to 580; and at least one of: a (meth)acrylic monomer (A) containing, within one molecule, one or more ether bonds and two (meth)acryloyloxy groups, and having a Mw of from 200 to 400; a (meth)acrylic monomer (B) not containing, within one molecule, a ring structure other than an aromatic ring and one (meth)acryloyloxy group, and having a Mw of from 130 to 240; or a (meth)acrylic monomer (C) containing, within one molecule, a hydrocarbon skeleton and two (meth)acryloyloxy groups, and having a Mw of from 190 to 280.

公开(公告)号：US20230131633A1

公开(公告)日：2023-04-27

申请号：US17908260

申请日：2021-03-26

申请人： MITSUI CHEMICALS, INC.

发明人： Mai KIMURA ,  Toshikazu SAKAMAKI

IPC分类号： A61K6/887 ,  C08F222/10 ,  C08F220/30 ,  C08F2/48 ,  C08K3/36 ,  B29C64/112 ,  B29C64/129 ,  A61C13/087 ,  A61C13/00

摘要： A photocurable composition includes a photopolymerizable component and a photopolymerization initiator. In a case in which a rectangular sheet-like test piece is produced by photomodeling under conditions in which the photocurable composition is irradiated with visible light having a wavelength of 405 nm at an irradiation dose of 12 mJ/cm2 to form a cured layer with a thickness of 50 µm, the cured layer is stacked in a thickness direction thereof to form a rectangular sheet-like modeling product with a length of 40 mm, a width of 10 mm, and a thickness of 1 mm, and the modeling product is irradiated with ultraviolet rays having a wavelength of 365 nm at an irradiation dose of 10 J/cm2 to produce the test piece, the test piece has an X-ray absorption coefficient of from 9.0 cm-1 to 34.0 cm-1.

公开(公告)号：US20240173214A1

公开(公告)日：2024-05-30

申请号：US18550309

申请日：2022-03-09

申请人： MITSUI CHEMICALS, INC.

发明人： Hiroki MURAI ,  Toshikazu SAKAMAKI ,  Mai KIMURA ,  Suguru ENDO

IPC分类号： A61K6/887 ,  A61C13/00 ,  A61K6/62

CPC分类号： A61K6/887 ,  A61C13/0013 ,  A61K6/62

摘要： Provided is a composition which contains a urethane (meth)acrylate, and at least one selected from the group consisting of 2-hydroxyethyl acrylate and hydroxypropyl acrylate, in which at least one of the following (1) or (2) is satisfied: (1) a content of 2-hydroxyethyl acrylate is 10,000 ppm by mass or less with respect to a total mass of the composition; (2) a content of hydroxypropyl acrylate is 25,000 ppm by mass or less with respect to the total mass of the composition.

公开(公告)号：US20230242785A1

公开(公告)日：2023-08-03

申请号：US18004185

申请日：2021-07-06

申请人： MITSUI CHEMICALS, INC.

发明人： Takaaki HAYASHI ,  Toshikazu SAKAMAKI ,  Mai KIMURA ,  Hiroki MURAI ,  Suguru ENDO ,  Eiji KOBAYASHI

IPC分类号： C09D135/02 ,  C08F222/10 ,  C09D4/00 ,  C09D7/63 ,  A61C13/34 ,  B33Y70/00

CPC分类号： C09D135/02 ,  C08F222/1025 ,  C08F222/103 ,  C08F222/104 ,  C09D4/00 ,  C09D7/63 ,  A61C13/34 ,  B33Y70/00 ,  B33Y80/00

摘要： A photocurable composition, wherein: in a case in which a rectangular sheet-like test piece P1 is produced by photomodeling under conditions in which the photocurable composition is irradiated with visible light having a wavelength of 405 nm at an irradiation dose of 11 mJ/cm2 to form a cured layer P1 with a thickness of 50 μm, the cured layer P1 is stacked in a thickness direction thereof to form the rectangular sheet-like modeling product P1 with a length of 40 mm, a width of 10 mm, and a thickness of 0.5 mm, and the modeling product P1 is irradiated with ultraviolet rays having a wavelength of 365 nm at an irradiation dose of 3 J/cm2 to produce the test piece P1, the storage modulus at 135° C. of the test piece P1 is 3.0×108 Pa or more.

公开(公告)号：US20230137212A1

公开(公告)日：2023-05-04

申请号：US17912098

申请日：2021-03-22

申请人： MITSUI CHEMICALS, INC.

发明人： Toshikazu SAKAMAKI ,  Mai KIMURA ,  Hiroki MURAI ,  Takaaki HAYASHI ,  Suguru ENDO

IPC分类号： C08F2/50 ,  C08F220/20 ,  C08F222/10 ,  C08F220/30 ,  C08F220/18 ,  C08K5/5397 ,  A61C13/00 ,  A61K6/62 ,  A61K6/887

摘要： A photocurable composition includes a photopolymerizable component and a photopolymerization initiator. When a test piece with a length of 39 mm, a width of 8 mm, and a thickness of 4 mm, is produced by photofabrication under conditions in which the photocurable composition is irradiated with visible light having a wavelength of 405 nm at an irradiation dose of 12 mJ/cm2 to form a cured layer with a thickness of 100 µm, the cured layer is stacked in a thickness direction thereof to form a rectangular fabrication product with a length of 39 mm, a width of 8 mm, and a thickness of 4 mm, and the fabrication product is irradiated with ultraviolet rays having a wavelength of 365 nm at an irradiation dose of 10 J/cm2 to produce the test piece, a total fracture work of the test piece measured in compliance with ISO20795-1:2008 is 1100 J/m2 or more.

公开(公告)号：US20220339077A1

公开(公告)日：2022-10-27

申请号：US17639927

申请日：2020-10-28

申请人： MITSUI CHEMICALS, INC.

发明人： Suguru ENDO ,  Toshikazu SAKAMAKI ,  Mai KIMURA ,  Hiroki MURAI ,  Takaaki HAYASHI

IPC分类号： A61K6/62 ,  A61K6/887 ,  C08F22/02 ,  C08F2/50 ,  C08F22/38

摘要： A photocurable composition includes a (meth)acrylic monomer component and a photopolymerization initiator, wherein an adhesive force of a cured product is less than or equal to 1.5 N, and a rupture elongation of the cured product is greater than or equal to 20%.

公开(公告)号：US20220153894A1

公开(公告)日：2022-05-19

申请号：US17439471

申请日：2020-03-30

申请人： MITSUI CHEMICALS, INC.

发明人： Toshikazu SAKAMAKI ,  Hirohisa SHIODE ,  Mai KIMURA

IPC分类号： C08F220/34

摘要： A photo-curable composition including a di-(meth)acrylic monomer (A) having two (meth)acryloyloxy groups and two urethane bonds, an acrylic monomer (B) having one acryloyl group, and a photopolymerization initiator, as well as a cured product of the photo-curable composition, and a dental product including the cured product.

公开(公告)号：US20190175455A1

公开(公告)日：2019-06-13

申请号：US16322808

申请日：2017-08-02

申请人： Mitsui Chemicals, Inc.

发明人： Toshikazu SAKAMAKI ,  Kouya KOJIMA ,  Hirohisa SHIODE ,  Mai KIMURA

IPC分类号： A61K6/083 ,  A61K6/00 ,  A61C13/01

摘要： A photocurable composition for manufacturing a dental prosthesis by stereolithography, including: a photopolymerization initiator; and a (meth)acrylic monomer component including an acrylic monomer (X) having no aromatic rings and having a ring structure other than an aromatic ring and two or more acryloyloxy groups in one molecule and having an Mw of from 200 to 800, and at least one of a (meth)acrylic monomer (A) having one or more ether bonds and two (meth)acryloyloxy groups in one molecule and having a defined Mw, a (meth)acrylic monomer (B) having a ring structure other than an aromatic ring and one (meth)acryloyloxy group in one molecule and having a defined Mw, a (meth)acrylic monomer (C) having a hydrocarbon skeleton and two (meth)acryloyloxy groups in one molecule and having a defined Mw, and a (meth)acrylic monomer (D) having one or more aromatic rings and one (meth)acryloyloxy group in one molecule and having a Mw.