国家/地区 中国（2）
IPC部 C（2）
IPC大类 C08（2）
IPC小类 C08K（2）
IPC C08L005/08（2）
发明人
公开年
申请年 2022（2）
专利权人

High-transparent and high-strength polyethylene heat-shrinkable film useful for packaging bottle-packed beverage, comprises e.g. first layer (comprised of low-density and metallocene polyethylene), second layer, third layer and fourth layer (comprised of high density polyethylene).

LIU Z, LI R, LIU S

Polyurethane useful for filling hydraulic construction concrete expansion joint, comprises polyether 330N, toluene diisocyanate, curing agent, catalyst, amino functional silane modified graphene oxide, beta-cyclodextrin modified chitosan, filler, pigment and viscosity reducing and toughening agent.

YANG D, LI H, XU Z