Patent ID: 11885387
Assignee: OTIS ELEVATOR COMPANY
Field: Mechanical elements (Mechanical engineering)
Classification: CPC F  C | IPC C  F

Claim 3:
4. The friction material according to claim 1, wherein the friction material contains the following components by weight percentage: 26%-29% of the nitrile rubber, 0.35%-0.45% of the vulcanizing agent, 0.35%-0.6% of the vulcanization activator, 0.65%-0.8% of the promoter, 0.06%-0.11% of the scorch inhibitor, 1.6%-2.4% of ZnO, 26%-29% of the thermoplastic phenolic resin, 1.5%-2.2% of the plasticizer, 15%-25% of the white carbon black, 12%-24% of the filler, 0.4%-0.7% of the anti-aging agent, and 1.4%-2.3% of MgO.