国家/地区 中国（2）
IPC部 C（2）
IPC大类 C04（2）
IPC小类 C04B（2）
IPC C08F220/06（2）
发明人
公开年 2023（2）
申请年
专利权人

High slump retention polycarboxylic acid water reducing agent comprises ethylene-glycol monovinyl polyethylene glycol macromonomer, acrylic acid, slump-retaining functional monomer, sodium formaldehyde sulfoxylate, hydrogen peroxide and mercaptoacetic acid.

LIANG Y, ZHANG Y, PANG S, MA M

Graphene layer complex used in the field of oil and gas well cementing, comprises graphene oxide and polymer grafted on the graphene oxide, and the polymer comprises a structural unit derived from 2-acrylamide-2-methylpropanesulfonic acid and a structural unit derived from the second monomer.

LIU J, MIAO X, WEI H, ZHOU S, WANG M