国家/地区 中国（2）
IPC部 B（2）
IPC大类 B01（2）
IPC小类 B01J（2）
IPC B01J023/30（2）
发明人 WANG C（2）
公开年
申请年
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

Preparation of flaky agglomerated small spherical nano tungsten trioxide powder for photocatalytic process, involves mixing ammonium metatungstate and graphene oxide solution, freezing, freeze-drying, heat-preserving and calcining.

WEI S, PAN K, ZHAO Y, ZHANG C, MAO F, CHEN C, XU L, ZHOU Y, LI X, WANG F, YANG Y, WANG C