Patent ID: 11885044
Assignee: LG CHEM, LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC D  C | IPC C  D

Claim 5:
6. The method for producing a polypropylene nonwoven fabric according to claim 1, wherein the metallocene polypropylene resin is prepared by using a compound represented by the following Chemical formula 1 as a catalyst:, in Chemical formula 1,
R1 and R2 are each independently phenyl, or phenyl substituted with C1-20 alkyl;
R3 and R4 are each independently C1-20 alkyl;
A is carbon, silicon, or germanium;
M is zirconium, or hafnium, and
X is halogen, or C1-20 alkyl.