国家/地区 中国（20） 韩国（2） 世界知识产权组织（2）
IPC部 C（23） B（3） H（3）
IPC大类 C08（23）
IPC小类 C08G（23）
IPC C08G073/10（23）
发明人 WANG Q（2） WANG T（2） WANG X（2）
WANG Y（2） YANG Z（2） ZHANG X（2）
ZHANG Y（2） ZHENG Z（2） ZHOU Z（2）
ZHU Q（2）
公开年 2022（16） 2023（7）
申请年 2022（23）
专利权人 DONGGUAN HON.（2） LANZHOU CHEM.（2） PI ADVANCED .（2）

Producing polyimide powder used in display, automobile, medical, battery, and aerospace, involves preparing polyamic acid solution, preparing polyimide mixed solution by heating polyamic acid solution, and filtering and drying precipitate present in mixed solution to obtain polyimide powder.

LEE H S, YANG M S, LEE I S, LEE H, YANG M

Preparing polyimide-based shape-memory composite aerogel by carrying out polycondensation reaction of diamine monomer and dianhydride monomer in N-methylpyrrolidone, placing obtained polyamic acid gel in water, freeze-drying, and dispersing polyamic acid filaments and graphene oxide in water.

LI L, GUO M, LIU T

Polyimide film used in multilayer film and flexible metal clad laminate, is obtained by imidizing polyamic acid solution containing dianhydride component including e.g. biphenyltetracarboxylic dianhydride, and diamine component including e.g. m-tolidine, and comprises graphene nanoplatelets.

JEON J, YEO M, BACK S, LEE K, CHUN J, BAEK S, LEE K N

Preparing high temperature resistant thermosetting supramolecular shape memory polyimide used in aerospace, has e.g. mixing graphene oxide, organic solvent, diamine and dianhydride and polycondensing, subjecting borate-terminated polyamic acid solution to solvent removal and thermal imidization.

WANG T, ZHANG Y, WANG X, WANG Y, ZHANG X, ZHANG N, WANG Q, YANG Z

Preparing polyimide film comprises e.g. mixing film polyimides, thermally conductive fillers and solvents, uniformly dispersing to obtain mixed dispersion, and coating the dispersion on substrate, and synthesizing by polymerization.

NIU S, SUN X

Preparing graphene-doped polyimide powder used e.g. in lost foam casting, comprises e.g. mixing and reacting graphene with organic solvent, diamine and dianhydride by in-situ polymerization, adding e.g. catalyst, performing chemical imidization of polyamic acid, and grinding polyimide product.

MIN Y, QIU W, LUO X, LIU Y

Preparing phase change graphene composite material useful as battery pack radiating material, comprises e.g. adding titanate coupling agent and aqueous ammonia, dissolving pyromellitic dianhydride and 4,4'-diaminodiphenyl ether in solvent, and polymerizing modified graphene oxide and isoquinoline.

HUANG Z, ZHOU Z, ZHU Q, ZHENG Z

Preparing boron-doped fluorinated polyimide film used in supercapacitor, involves obtaining polyimide by weighing certain amount of diamine, and four organic solvent and adding into mouth flask, stirring at normal temperature to diamine to dissolve, and weighing certain mass of dianhydride.

LI X

High barrier graphene composite polyimide film useful in mobile phone electronic product, chemical medical device, other fields, photoelectron and aviation field, comprises three-layer structure sequentially from top to bottom comprising polyimide film layer, graphene layer and polyimide film layer.

HUANG R, PAN D

Preparing high dielectric constant polyimide/three-dimensional graphene composite film comprises placing cleaned foam nickel into quartz boat, introducing nitrogen into chemical vapor deposition tubular furnace, and soaking foam nickel growing three-dimensional graphene in ferric chloride solution.

MA D, MU X, QI M