国家/地区 中国（4）
IPC部 C（4）
IPC大类 C08（4）
IPC小类 C08K（4）
IPC C08K003/04（4）
发明人
公开年 2022（2）
申请年 2022（2） 
专利权人

Modified core-shell masterbatch toughened polypropylene random copolymer (PPR) pipe comprises tube body comprising outer layer, middle layer and inner layer, where outer layer comprises PPR resin, modified nano-calcium carbonate and dispersant.

MO Y, LU Z, LI Y, LI H, SHI K, LIANG Y, LAN J

Processing cold-resistant water pipe useful in e.g. polyvinyl chloride water supply pipe, comprises e.g. ultrasonically dispersing graphene oxide and deionized water, centrifuging, reacting, stirring polypropylene, ethylene-octene copolymer, high-density polyethylene, and performing melt extrusion.

LU X, GU N

Environmentally friendly flame-retardant thermal insulation PPR pipe comprises antibacterial layer, main body layer, waterproof layer and flame-retardant layer made of polyethylene particles, graphene powder and brucite grafted polyimide.

MU X

Steel mesh structured composite pipe contains high-density polyethylene, low-density polyethylene, linear low-density polyethylene, ethyl vinyl acetate, graphene, carbon nanotubes, polyimide fibers, and drawing grade polypropylene.

XIANG J, WU Y