国家/地区 中国（21） 世界知识产权组织（3） 韩国（2） 美国（2）
IPC部 C（25） H（3） B（2）
IPC大类 C08（25）
IPC小类 C08G（25）
IPC C08G073/10（25）
发明人 LI G（2） SU C（2） WANG Y（2）
ZHANG Y（2）
公开年 2022（21） 2023（4）
申请年 2022（25）
专利权人 GUANGDONG HO.（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 is obtained by imidization reaction of polyamic acid containing quinoline and beta-picoline as imidation catalyst and acetic anhydride as dehydrating agent.

JUNG H, WON D, WON D Y

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 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

Preparing polyimide film with good thermal conductivity and thermal stability, comprises e.g. dispersing graphene oxide into N,N-dimethylacetamide, adding zinc salt, aminoimidazole and methylimidazole, heating and stirring for reaction, centrifuging, washing and freeze-drying.

JIN H, PANG C, XU B, SUN S

Preparing perfume volatile medium graphite core rod useful in the field of perfume volatile materials, comprises e.g. placing N-methyl-2-pyrrolidone in glass reactor, adding eugenol, reacting graphene oxide dispersion liquid and polyamic acid solution, heating the composite sponge and drying.

LOU L

Low residual image polyimide used in liquid crystal alignment film, comprises alicyclic dianhydride monomer, additive containing piperidine group, graphene, and diamine monomer comprising diamine monomer containing linear alkyl and N,N,N',N'-tetrakis(p-aminophenyl)p-phenylenediamine.

ZHENG Q, LIU B, SHAO C, CAO H, LIU G