公开(公告)号：US11680138B2

公开(公告)日：2023-06-20

申请号：US17114988

申请日：2020-12-08

Applicant: Zhen Ding Technology Co., Ltd.

Inventor： Kuan-Wei Lee ,  Szu-Hsiang Su ,  Shou-Jui Hsiang ,  Pei-Jung Wu ,  Wei-Hsin Huang

IPC: C08G69/26 ,  C08L67/03 ,  C08G69/32 ,  C08J3/09 ,  C08J3/11 ,  C08J5/18

CPC classification number: C08G69/265 ,  C08G69/32 ,  C08J3/096 ,  C08J3/11 ,  C08J5/18 ,  C08L67/03 ,  C08K2201/005 ,  C08L2201/56 ,  C08L2203/16 ,  C08L2203/20 ,  C08L2205/12 ,  C08L2312/00

Abstract: A polymer dispersion is disclosed. The polymer dispersion includes a liquid crystal polymer powder, a polyamide acid, and a solvent. A solid content of the polymer dispersion includes the liquid crystal polymer powder and the polyamide acid. The liquid crystal polymer powder has a mass ratio of 20% to 30% in the solid content. The polyamide acid has a mass ratio of 70% to 80% in the solid content. The polyamide acid is obtained by mixing two kinds of diamines and two kinds of dianhydrides together, causing the diamines and the dianhydrides to be polymerized with each other. Both two kinds of diamines and two kinds of dianhydrides comprise a liquid crystal structure and a flexible structure respectively. A method of preparing the polymer dispersion, and a method for preparing a polymer composite film using the polymer dispersion are also disclosed.

公开(公告)号：US11524491B2

公开(公告)日：2022-12-13

申请号：US17107787

申请日：2020-11-30

Applicant: Zhen Ding Technology Co., Ltd.

Inventor： Wei-Hsin Huang ,  Chi-Fei Huang ,  Szu-Hsiang Su ,  Shou-Jui Hsiang ,  Kuan-Wei Lee

IPC: B32B27/28 ,  B29C53/56 ,  B32B37/02 ,  B29C53/00 ,  B29C53/16 ,  B32B38/10 ,  B32B38/00 ,  B32B37/20 ,  B29K105/00 ,  C08G73/10 ,  B29K79/00 ,  C08G69/32

Abstract: A method for manufacturing a thick polyimide film includes providing a first and second laminated structures. The first and second laminated structures are heated, and the heated first and second laminated structures are wound together to form a third laminated structure. The first polyamic acid gel film of the heated first laminated structure and the second polyamic acid gel film of the heated second laminated structure are overlapped and bonded together to form a third polyamic acid gel film. Two third laminated structures are wound together to form a fourth polyamic acid gel film. A dehydration ring-closure imidization reaction is applied to the fourth polyamic acid gel film by heating to obtain the thick polyimide film. A thick polyimide film manufactured by the method is also disclosed.