公开(公告)号：US20200157256A9

公开(公告)日：2020-05-21

申请号：US15993002

申请日：2018-05-30

Applicant: AGC Inc.

Inventor： Keisuke TAKAGI ,  Jun YOSHIDA ,  Hidenobu MUROFUSHI

IPC: C08F20/14 ,  C08F20/22 ,  C08F20/28 ,  C08F20/56 ,  C08F30/08 ,  C08F2/48 ,  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：US20200165411A1

公开(公告)日：2020-05-28

申请号：US16776611

申请日：2020-01-30

Applicant: AGC Inc.

Inventor： Keisuke TAKAGI ,  Tomoaki SAKURADA ,  Hidenobu MUROFUSHI

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

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：US20190338062A1

公开(公告)日：2019-11-07

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.