国家/地区 中国（9）
IPC部 C（9）
IPC大类 C08（9）
IPC小类 C08K（9）
IPC C08K003/26（9）
发明人 JIANG J（2） LIN Y（2） ZHANG Y（2）
公开年 2022（3） 2017（2） 2021（2） 2023（2）
申请年 2022（5）  2017（2） 
专利权人 ANHUI CHAOXI.（2） GUIZHOU LIZH.（2）

High density polyethylene corrugated pipe useful in the field of transportation and construction, comprises inner wall and outer wall, where the inner wall includes enhanced HDPE master batch, magnesium carbonate, zinc sulfide, pentaerythritol ester and polyethylene wax.

LI W, JIANG J, ZHANG Y

Preparing internal spiral polyvinyl chloride drainage pipe, comprises e.g. bending and spiraling steel wire, extruding, injecting into brushing mechanism, carrying out spiral groove processing, forming inner spiral groove, spraying, extruding, painting and performing preliminary drying.

LIU Z

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

Weather-resistant drainage pipeline with multilayer structure, comprises an inner layer, an intermediate layer and an outer layer, where the intermediate layer pipe comprises PVC resin, calcium carbonate powder, calcium-zinc heat stabilizer, solid plasticizer, processing aid and toughening modifier.

HUO F, CHEN H, SONG Q, FENG J

Preparing pipe material comprises cleaning mineral-inorganic composite materials, grinding, melting, casting and forming in combination with pipe mold by means of centrifugal casting, demolding and cooling, heating and densifying, and coating anti-corrosion coating.

WANG P

Combined pressure-resistant double-wall corrugated pipe has corrugated pipe provided with corrugated grooves, and exhaust pipe passing arc-shaped limiting groove and installed on annular airbag, which is in contact with corrugated groove.

LIU L, JIANG H, ZHANG Z, JIANG J, ZHANG Y

Modified ultra-high molecular weight polyethylene pipe comprises modified ultra-high molecular weight polyethylene inner tube and PTFE outer wall.

QIAN G

Polyethylene water supply pipe comprises inner antibacterial layer and outer polyethylene layer including polyethylene resin, nano-silica, nano-titanium dioxide, modified graphene, stearic acid, zinc stearate, and polyethylene wax.

LIN Y

Polyethylene composite pipeline comprises outer polyethylene layer, and inner antimicrobial layer containing polyethylene resin, nano silica, nano titania, nano zinc, modified graphene, stearic acid, calcium stearate, and polyethylene wax.

LIN Y