国家/地区 中国（3）
IPC部 B（4）
IPC大类 B01（4）
IPC小类 C08G（4）
IPC B01J020/20（2） B01J020/28（2） B01J020/30（2）
发明人 WANG C（4）
公开年 2021（2）
申请年 2020（2）  2021（2） 
专利权人

Esterification of purified terephthalic acid and 1,4-butanediol useful for producing polybutylene adipate terephthalate, comprises adding terephthalic acid, 1,4-butanediol and polymerization degree catalyst into a reaction kettle, introducing nitrogen, and reacting.

LIU G, LIU S, XU W, GUO T, HAN Y, ZHOU B, ZHENG L, LIU Y, HAO D, WANG X, CAO F, WANG C, WANG M, LI Z, LI J, ZHAO N, SHI C, SHI R

Mixture comprises solution of alkylsulfonic acid and 1-(4-acetylphenyl)ethan-1-one derivative and acetophenone, additional elements selected from carbon nanotubes, metal nanowires, dendritic metal micro/nano-particles.

ZHOU H, ZHANG Q, WANG C, GUO Z, FANG L

Processing phenol-based rectifying kettle residue comprises e.g. subjecting phenol-based rectifying kettle residue by vacuum extracting deep drawing to obtain decompressed and drawing out and vacuum extracting deep drawing kettle.

HE L, LI X, WANG C, DU J, ZHOU J, CAI S, MA Y

Graphene composite filter screen useful in e.g. air purification, comprises polyether polyol, toluene diisocyanate, graphene material, activated carbon powder, catalyst, foam stabilizer, surfactant and additive.

WANG Y, WANG C, LIU S