国家/地区 中国（3）
IPC部 C（3）
IPC大类 C07（3） C08（2）
IPC小类 C07D（3）
IPC
发明人 LIU J（3）
公开年 2021（2）
申请年 2021（3）
专利权人

Pod-type degradable temporary plugging ball useful in temporary plugging treatment of oil and gas wells in fracturing system, comprises degradable outer shell (comprising e.g. polymerized product of glycolide, lactide, polybutylene succinate prepolymer) and inner core.

LI H, ZHANG Y, SHANG L, HUANG B, LIU J, WANG Y, YANG X, JIANG Q

Preparing antibacterial nanofiber yarn involves sequentially carrying out cotton cleaning, cotton carding, combing, drawing, roving, and spinning on antibacterial fiber, cotton fiber and polyamide fiber.

CUI B, LI Y, WEI M, LIU J, LIU Q

Corrosion-resistant battery casing comprises PVC resin, anti-aging agent, talc powder, kaolin powder, paraffin wax, dibutyl phthalate, where anti-aging agent is made by adding cyanuric chloride, chlorobenzene into the reaction kettle.

ZHU Q, MAO R, LIU K, HAN Y, LIU J, ZHU C