国家/地区 中国（3）
IPC部 C（3） B（2）
IPC大类 C07（3）
IPC小类 C07D（3）
IPC C08K003/04（2） C08K009/04（2）
发明人
公开年 2022（3）
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

Automobile air outlet thumbwheel with fluorescent function comprises polypropylene, fluorescent particles, plasticizer and antioxidant, where thumbwheel is prepared by e.g. melting polypropylene, adding fluorescent particles, plasticizer and antioxidant, extruding, cooling extruded material.

MAO M, SHENG H, YUAN G, JIANG Z, XIA H

Processing carbon black used in plastic products, involves dissolving reinforcing agent in tetrahydrofuran to prepare reinforcing solution, dispersing modified carbon black in deionized water, adding triethylamine, and stirring.

GU J, LU J