公开(公告)号：US11630389B2

公开(公告)日：2023-04-18

申请号：US16513993

申请日：2019-07-17

Applicant: AGC Inc.

Inventor： Keisuke Takagi ,  Tomoaki Sakurada

IPC: C08F267/06 ,  C08F220/68 ,  C08F220/28 ,  C08F265/04 ,  G03F7/00

Abstract: To provide a curable composition for imprinting whereby a cured product layer for a replica mold, which is excellent in the adhesion to a mold substrate and the release property from a cured product of a transfer object material when used in an imprinting method is formed; a replica mold for imprinting, using the curable composition for imprinting; its production process and a process for producing an article having a fine pattern on its surface by using the replica mold.
A curable composition for imprinting, which comprises a fluorinated polymer comprising structural units (a) based on CH2═C(R1)C(O)OR2Rf (R1: a hydrogen atom, a methyl group or the like, R2: a bivalent linking group having no fluorine atom and Rf: a C2-6 fluoroalkyl group or the like) and structural units (b) having a cationic polymerizable reactive group having an oxygen atom, and a photo-acid generator, wherein the proportion of the fluorinated polymer is from 11 to 89 mass % in 100 mass % of the curable composition for imprinting.

公开(公告)号：US10457756B2

公开(公告)日：2019-10-29

申请号：US15818095

申请日：2017-11-20

Applicant: AGC Inc.

Inventor： Jun Yoshida ,  Keisuke Takagi ,  Hidenobu Murofushi ,  Tomoaki Sakurada

IPC: C08F122/22 ,  C07C271/16 ,  C07C323/12 ,  C07C323/43 ,  C07D303/28 ,  C08F122/24 ,  C08G59/30 ,  C08G59/68 ,  C08G59/04 ,  C08G65/00 ,  C08G65/331 ,  C08G65/333 ,  C08G65/334 ,  C08F222/22

Abstract: To provide a fluorinated compound capable of obtaining a cured product which is excellent in heat resistance and mold release and has a high Abbe number; a curable composition containing such a compound; and a cured product which is excellent in heat resistance and mold release and has a high Abbe number. The fluorinated compound is represented by the following formula (A): [Z—OCH2CF2CF2CF2OCFHCF2—X—]nQ  (A) where n is an integer of at least 1, Q is a n-valent organic group, X is —O—, —NH— or —S—, and Z is a group having at least one polymerizable functional group.

公开(公告)号：US10927199B2

公开(公告)日：2021-02-23

申请号：US15993002

申请日：2018-05-30

Applicant: AGC Inc.

Inventor： Keisuke Takagi ,  Jun Yoshida ,  Hidenobu Murofushi

IPC: C08F20/14 ,  C08F220/22 ,  C08F292/00 ,  C09C1/36 ,  C09C3/08 ,  C08F2/48 ,  C08F20/22 ,  C08F20/28 ,  C08F20/56 ,  C08F30/08 ,  C09C1/30

Abstract: To provide a curable composition whereby it is possible to obtain a cured product having a high Abbe number and being excellent in transparency, crack resistance and releasability; and such a cured product. A curable composition comprises, in specific ratios, surface-modified metal oxide particles (A) having (meth)acryloyl-group-containing surface-modifying groups on the surface of the metal oxide particles, a compound (B) having a fluorine atom and at least one (meth)acryloyl group, a compound (C) having a urethane bond or —OCH2CH(OH)CH2—, having at least two (meth)acryloyl groups and having a mass-average molecular weight of at least 1,000, a compound (D) having no unsaturated bond-containing ring structure and having at least one (meth)acryloyl group, and a polymerization initiator (E).

公开(公告)号：US20190218325A1

公开(公告)日：2019-07-18

申请号：US16366622

申请日：2019-03-27

Applicant: AGC Inc.

Inventor： Tomoaki Sakurada ,  Keisuke Takagi ,  Yasuhiro Kuwana

IPC: C08F222/20 ,  C08F220/18 ,  C08F220/30 ,  C08F222/14

CPC classification number: C08F222/20 ,  C08F220/10 ,  C08F220/18 ,  C08F220/30 ,  C08F222/14 ,  C08F2220/301 ,  C08F2800/20

Abstract: To provide a curable composition having a low viscosity, from which a cured product having a high refractive index, a low Abbe number, high transparency and high heat resistance can be obtained, and its cured product.A curable composition comprising a monomer (A) having at least one crosslinkable group and at least one aromatic ring, which may have one or more sulfur atoms not constituting the ring skeleton of the aromatic ring, in which the total proportion of the mass of atoms constituting the ring skeleton of the aromatic ring, the mass of hydrogen atoms bonded to the atoms constituting the ring skeleton of the aromatic ring and the mass of the sulfur atom not constituting the ring skeleton of the aromatic ring is at least 47 mass % based on 100 mass % of one monomer molecule, and which has a viscosity at 25° C. of at most 1,000 mPa·s; a specific monomer (B) having a fluorene skeleton; a compound (C) having an Abbe number of at most 21; and a polymerization initiator (D), wherein the content of the compound (C) is from 1 to 10 mass % based on 100 mass % of the total content of the monomer (A), the monomer (B) and the compound (C).

公开(公告)号：US11427696B2

公开(公告)日：2022-08-30

申请号：US16776611

申请日：2020-01-30

Applicant: AGC Inc.

Inventor： Keisuke Takagi ,  Tomoaki Sakurada ,  Hidenobu Murofushi

IPC: C08K3/36 ,  C08K5/101 ,  C08K5/372

Abstract: To provide a curable composition capable of obtaining a cured product which has a high Abbe number, is excellent in transparency and crack resistance, and is capable of suppressing a decrease in transparency over a long period of time; and such a cured product. This curable composition comprises solid silica fine particles A, of which an organic component is at most 5 mass % and the median diameter is from 5 to 20 nm, (meth)acrylate B which has an alicyclic condensed ring, and of which the glass transition temperature of the homopolymer is from 90 to 350° C., epoxy(meth)acrylate C which has no aromatic ring, and in which the amount of substance of ethylenically unsaturated groups is from 0.1 to 3.0 mmol/g (but excluding the (meth)acrylate B), urethane(meth)acrylate D having no aromatic ring (but excluding the (meth)acrylate B and the epoxy(meth)acrylate C), an antioxidant, and a polymerization initiator, wherein said antioxidant comprises an antioxidant having a phenol moiety and an antioxidant having a sulfide moiety (but excluding the antioxidant having a phenol moiety), in the total of the solid silica fine particles A, the (meth)acrylate B, the epoxy(meth)acrylate C and the urethane(meth)acrylate D, the solid silica fine particles A are from 3 to 55 mass %, the (meth)acrylate B is from 3 to 70 mass %, the epoxy (meth)acrylate C is from 10 to 80 mass %, and the urethane(meth)acrylate D is from 0 to 60 mass %, and to 100 parts by mass in total of the solid silica fine particles A, the (meth)acrylate B, the epoxy(meth)acrylate C and the urethane(meth)acrylate D, the antioxidant is from 0.1 to 10 parts by mass, and the polymerization initiator is from 0.1 to 10 parts by mass.

公开(公告)号：US10745508B2

公开(公告)日：2020-08-18

申请号：US16001317

申请日：2018-06-06

Applicant: AGC Inc.

Inventor： Keisuke Takagi ,  Jun Yoshida ,  Hidenobu Murofushi

IPC: C08F292/00 ,  C08G77/24 ,  C08G77/20 ,  C07F7/18 ,  C09C1/36 ,  C09C3/12 ,  C09D183/08 ,  C07F7/28 ,  G02B1/04

Abstract: Surface-modified metal oxide particles, includes: a metal oxide particle having a refractive index of at least 1.9 to light having a wavelength of 589 nm; a first surface-modifying group having a group represented by formula (A1); and a second surface-modifying group having a group represented by formula (A2). R1 is a hydrogen atom or a C1-4 hydrocarbon group; n is an integer of from 1 to 20, m is an integer of at least 3 and at most (2n+1); a is an integer of from 0 to 2; R3 is a hydrogen atom or a methyl group; R4 is a hydrogen atom or a C1-4 hydrocarbon group; X is —O— or —NH—; b is an integer of from 2 to 10; and c is an integer of from 0 to 2. CnFmH2n+1-m—SiR1a(—*)3-a  (A1) CH2═CR3C(O)—X—(CH2)b—SiR4c(—*)3-c  (A2)

公开(公告)号：US11851557B2

公开(公告)日：2023-12-26

申请号：US16778050

申请日：2020-01-31

Applicant: AGC Inc.

Inventor： Keisuke Takagi ,  Takashi Sasaki ,  Tomoaki Sakurada

IPC: C08L33/08 ,  C08L33/14

CPC classification number: C08L33/08 ,  C08L33/14 ,  C08L2201/08

Abstract: To provide a curable composition being excellent in curability and being capable of forming a cured product which is excellent in heat resistance, which is excellent in adhesion to an inorganic substrate or an inorganic compound layer, and which is hardly peeled even when exposed to a high temperature/high humidity environment for a long time, a cured product formed by curing the curable composition, and a laminate.
A curable composition comprising specific metal oxide fine particles A, a specific (meth)acrylate B, a specific antioxidant, an organopolysiloxane and a radical polymerization initiator, which may further contain a specific epoxy (meth)acrylate C, and which may further contain a specific urethane (meth)acrylate D. A cured product formed by curing the curable composition, and a laminate having the cured product.

公开(公告)号：US20200263021A1

公开(公告)日：2020-08-20

申请号：US16778050

申请日：2020-01-31

Applicant: AGC Inc.

Inventor： Keisuke Takagi ,  Takashi Sasaki ,  Tomoaki Sakurada

IPC: C08L33/08 ,  C08L33/14

Abstract: To provide a curable composition being excellent in curability and being capable of forming a cured product which is excellent in heat resistance, which is excellent in adhesion to an inorganic substrate or an inorganic compound layer, and which is hardly peeled even when exposed to a high temperature/high humidity environment for a long time, a cured product formed by curing the curable composition, and a laminate.A curable composition comprising specific metal oxide fine particles A, a specific (meth)acrylate B, a specific antioxidant, an organopolysiloxane and a radical polymerization initiator, which may further contain a specific epoxy (meth)acrylate C, and which may further contain a specific urethane (meth)acrylate D. A cured product formed by curing the curable composition, and a laminate having the cured product.