公开(公告)号：US20210283655A1

公开(公告)日：2021-09-16

申请号：US17275715

申请日：2019-08-20

Applicant: SHOWA DENKO K.K.

Inventor： Kazuo OTANI ,  Atsushi UMINO ,  Kunihiro KUROKI

IPC: B05D7/00 ,  E01D22/00 ,  C04B41/00 ,  C04B41/45 ,  C04B41/48

Abstract: A structure repairing method applied to concrete structures ensures a short construction period and high reliability in a wide temperature range. The method includes a first repairing layer forming step of applying a radical-polymerizable resin composition (A) to a structure to form a first repairing layer, a second repairing layer forming step of applying a repairing material (X) containing a radical-polymerizable resin composition (Ax) and a filler (B) to the first repairing layer before the first repairing layer is cured, thereby forming a second repairing layer, and a repairing layer curing step of curing the radical-polymerizable resin composition (A) and the radical-polymerizable resin composition (Ax), wherein (A) and (Ax) each contain a radical-polymerizable resin (a1), a radical-polymerizable unsaturated monomer (a2), a hydroxy group-containing aromatic tertiary amine (a3), and an organic peroxide (a4), and (a1) and (a2) in each of (A) and (Ax) total 75% by mass or more.

公开(公告)号：US20200181365A1

公开(公告)日：2020-06-11

申请号：US16341151

申请日：2017-09-04

Applicant: SHOWA DENKO K.K.

Inventor： Yoichiro SAKAGUCHI ,  Takuya MINAMI ,  Yoshishige OKUNO ,  Atsushi UMINO ,  Yoshitaka ISHIBASHI

IPC: C08K5/548 ,  C08F20/00

Abstract: A curing accelerator can exhibit good curing acceleration performance and is excellent in storage stability, while maintaining sufficient pot life in a curing reaction of radical-polymerizable resins, and a radical-polymerizable resin composition uses the curing accelerator. The curing accelerator for radical-polymerizable resins includes a metal-containing compound (A), a thiol compound (B) and an aprotic solvent (C) having a dielectric constant of 10 or less, wherein the metal-containing compound (A) is one or more compounds selected from a metal soap (A1) and a β-diketone skeleton-having metal complex (A2), the thiol compound (B) is one or more compounds selected from a mono-functional primary thiol compound (B1), a secondary thiol compound (B2) and a tertiary thiol compound (B3), and the content of the aprotic solvent (C) is 10 to 1,000 parts by mass relative to 100 parts by mass of the total of the metal-containing compound (A) and the thiol compound (B).

公开(公告)号：US20180002562A1

公开(公告)日：2018-01-04

申请号：US15545744

申请日：2016-02-16

Applicant: SHOWA DENKO K.K.

Inventor： Kunihiro KUROKI ,  Atsushi UMINO

IPC: C09D135/02 ,  B05D7/14 ,  C09D131/02 ,  E04G23/02 ,  C09D175/16 ,  C04B41/48 ,  B05D7/06 ,  B05D5/00 ,  C08K5/14 ,  C08K3/00 ,  C08K5/18

CPC classification number: C09D135/02 ,  B05D5/005 ,  B05D7/06 ,  B05D7/14 ,  C04B26/06 ,  C04B41/4826 ,  C04B2111/10 ,  C04B2111/72 ,  C08F290/06 ,  C08K3/013 ,  C08K5/14 ,  C08K5/18 ,  C09D131/02 ,  C09D175/16 ,  E04G23/02 ,  C04B14/042 ,  C04B14/06 ,  C04B14/28 ,  C04B14/36 ,  C04B24/00 ,  C04B24/121

Abstract: Provided is a low-temperature-curable cross-section repair material which can be cured in a short period of time, even in extremely low temperature environments of −25° C., and which exhibits excellent workability and strength development. Also provided is a cross-section repairing method using the same. The low-temperature-curable cross-section repair material is characterized by: comprising 100 parts by of a radical polymerizable resin composition (A), 0.1-10 parts by of a hydroxyl group-containing aromatic tertiary amine (C-1), 0.1-10 parts by of an organic peroxide (D), and 1.0-500 parts by of an inorganic filler (E); and the radical polymerizable resin composition (A) comprising at least one type of radical polymerizable resin (A-1) selected from the group consisting of vinyl ester resins, urethane (meth)acrylate resins and polyester (meth)acrylate resins, and a radical polymerizable unsaturated monomer (A-2) having at least two or more (meth)acryloyl groups per molecule thereof.