公开(公告)号：US20220306895A1

公开(公告)日：2022-09-29

申请号：US17699991

申请日：2022-03-21

Applicant: FUJIFILM BUSINESS INNOVATION CORP.

Inventor： Shigeru SEITOKU ,  Kosaku YOSHIMURA ,  Hidekazu HIROSE ,  Hajime SUGAHARA ,  Kosuke NAKADA ,  Satoshi YOSHIDA

IPC: C09D179/08 ,  C08G73/10 ,  C08J9/24 ,  C08J9/00

Abstract: A polyimide precursor solution contains a polyimide precursor, particles, and a water-based solvent that contains an amine compound (A), an organic solvent (B) other than the amine compound (A) and amide compounds, and water, in which a boiling point of the organic solvent (B) is higher than a boiling point of the amine compound (A), and is 200° C. or higher and 300° C. or lower.

公开(公告)号：US20220298304A1

公开(公告)日：2022-09-22

申请号：US17381854

申请日：2021-07-21

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Kosaku YOSHIMURA ,  Yasunobu KASHIMA ,  Hajime SUGAHARA ,  Takahiro ISHIZUKA

IPC: C08G73/10 ,  C08J5/18 ,  C08J9/26

Abstract: A polyimide precursor solution contains a polyimide precursor having a weight average molecular weight of 40,000 or more, and an aqueous solvent containing a tertiary amine compound and water, in which a viscosity of the polyimide precursor solution after a storage at 25° C. for 14 days is 50% or more and 200% or less with respect to a viscosity of the polyimide precursor solution before the storage.

公开(公告)号：US20220069413A1

公开(公告)日：2022-03-03

申请号：US17137876

申请日：2020-12-30

Applicant: FUJIFILM BUSINESS INNOVATION CORP.

Inventor： Kosuke NAKADA ,  Yasunobu KASHIMA ,  Kosaku YOSHIMURA ,  Tomoya SASAKI ,  Hajime SUGAHARA ,  Tomoyo OKUBO ,  Hidekazu HIROSE

IPC: H01M50/423 ,  H01M50/429 ,  H01M50/403 ,  H01M50/46 ,  H01M50/491 ,  H01M50/494 ,  H01M50/449

Abstract: A separator for a non-aqueous secondary battery includes: a polyimide porous film; and adhesive resin particles that are attached to a surface of the polyimide porous film and have a responsiveness to at least one of pressure and heat.

公开(公告)号：US20220064379A1

公开(公告)日：2022-03-03

申请号：US17146436

申请日：2021-01-11

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Hajime SUGAHARA ,  Hidekazu HIROSE ,  Kosaku YOSHIMURA ,  Tomoya SASAKI ,  Yasunobu KASHIMA ,  Kosuke NAKADA ,  Tomoyo OKUBO

IPC: C08G73/10 ,  C08J9/26

Abstract: A particle-dispersed polyimide precursor solution contains: a polyimide precursor consisting of a polymer of a tetracarboxylic dianhydride and a diamine containing a fluorene-based diamine having a fluorene skeleton; particles; and an aqueous solvent containing water.

公开(公告)号：US20230192955A1

公开(公告)日：2023-06-22

申请号：US17827780

申请日：2022-05-29

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Kosuke NAKADA ,  Hidekazu HIROSE ,  Kosaku YOSHIMURA ,  Shigeru SEITOKU ,  Hajime SUGAHARA ,  Satoshi YOSHIDA

IPC: C08G73/10 ,  H01B3/30 ,  C08J5/18

CPC classification number: C08G73/1007 ,  H01B3/306 ,  C08J5/18 ,  C08J2379/08

Abstract: A polyimide precursor solution includes a polyimide precursor that is a polymer of an aromatic tetracarboxylic dianhydride and an aromatic diamine compound, resin particles, an aqueous solvent containing water, and an amine compound having a boiling point of equal to or higher than 250° C. and equal to or lower than 300° C., in which a ratio of a volume of the resin particles to a volume of the amine compound (volume of resin particles/volume of amine compound) is equal to or more than 0.22 and equal to or less than 0.61.

公开(公告)号：US20230079844A1

公开(公告)日：2023-03-16

申请号：US17577358

申请日：2022-01-17

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Kosaku YOSHIMURA ,  Yasunobu KASHIMA ,  Takahiro ISHIZUKA

IPC: C08G73/10 ,  B29C67/20 ,  H01M50/414 ,  H01M50/403 ,  H01M50/491

Abstract: A polyimide precursor solution includes a polyimide precursor having a glass transition temperature Tg of equal to or higher than 300° C. after imidization, an aqueous solvent containing water, an organic amine compound, and resin particles having a volume average particle size of equal to or less than 100 nm.

公开(公告)号：US20220306805A1

公开(公告)日：2022-09-29

申请号：US17374425

申请日：2021-07-13

Applicant: FUJIFILM BUSINESS INNOVATION CORP.

Inventor： Yasunobu KASHIMA ,  Kosaku YOSHIMURA ,  Takahiro ISHIZUKA

IPC: C08G73/10 ,  C08J5/18

Abstract: A polyimide precursor-containing aqueous composition contains a polyimide precursor, resin particles having a polyalkylene oxide group, and a solvent containing water and an aprotic polar solvent.

公开(公告)号：US20220119596A1

公开(公告)日：2022-04-21

申请号：US17380016

申请日：2021-07-20

Applicant: FUJIFILM Business Innovation Corp.

Inventor： Tomoya SASAKI ,  Hidekazu HIROSE ,  Kosaku YOSHIMURA ,  Yasunobu KASHIMA ,  Hajime SUGAHARA ,  Kosuke NAKADA ,  Tomoyo OKUBO

IPC: C08G73/10 ,  C08J5/18 ,  C08J9/26

Abstract: A particle-dispersed polyimide precursor solution contains a polyimide precursor having a unit represented by the following formula (I), particles, and a solvent, in which the particle-dispersed polyimide precursor solution satisfies both the following conditions (1) and (2), (in the formula (I), A represents a tetravalent organic group, and B represents a divalent organic group represented by any of the following formulas (B1) to (B4)), (in the formulas (B1) to (B4), Ar1, Ar10, and Ar11 each independently represent a trivalent aromatic group which may have a substituent, Ar2, Ar4, Ar5, Ar7 and Ar8 each independently represent a divalent aromatic group which may have a substituent, Ar3 and Ar6 each independently represent a tetravalent aromatic group which may have a substituent or a group represented by the following formula (II), Ar9 represents a divalent aromatic group which may have a substituent or a group represented by the following formula (III), X1 to X7 each independently represent NRa, O, or S, Ra represents a hydrogen atom, an alkyl group which may have a substituent, or an aryl group, and * represents a bonding site with an adjacent linking group), and (in the formulas (II) and (III), Ar12 and Ar13 each independently represent a trivalent aromatic group which may have a substituent, Ar14 and Ar15 each independently represent a divalent aromatic group which may have a substituent, Y and Z each independently represent O, S, S(═O)2, or CRbRc, Rb and Rc each independently represent a hydrogen atom, an alkyl group which may have a substituent, or an aryl group, and * represents a bonding site with an adjacent linking group), Condition (1): a total content of the groups represented by the formulas (B1) to (B4) is 1% by mass or more and 40% by mass or less with respect to a total amount of the polyimide precursor, and
Condition (2): a content of the particles is 5% by mass or more and 90% by mass or less with respect to a total content of the polyimide precursor and the particles.