A KOH-promoted cascade C-Cl bond activation and amidation of trichloromethyl aromatic compounds with formamides using water as solvent has been developed. This methodology suggested an alternative synthetic approach for the...

The homogeneous rare earth IR/NR blend applied in tread compound of all-steel TBR tire was investigated,and compare to Russian SKI-3, SKI-5/NR blends and NR.The results showed homogeneous rare earth IR/NR blend had similar vulcanization characteristics, dynamic mechanical properties and heat-aging resistance or even better. It was inspected that the appearance, balance, air bubbles, X-ray and homogeneity inspection test of the tires produced by homogeneous rare earth IR/NR blend by the tire factory,all the indicators were qualified. The tires passed the China National Quality Supervision and Inspection Center of rubber tire certification. The tires met the requirements of all-steel TBR tire.The homogeneous rare earth IR prepared by Petro China Jilin Petrochemical Company could 40 phr instead of NR using in tread compound of all-steel TBR tire,which could extend tire life and reduce tire material costs.

Mooney viscosity, cure characteristics, tensile properties, tear strength, rolling resistance property, abrasion resistance ,dynamic cutting property and other properties of the homogeneous rare earth IR/NR blend were investigated, and compare to Russian SKI-3/NR blend, SKI-5/NR blend and NR. The results showed homogeneous rare earth IR/NR blend has similar or even better properties compare to SKI-3/NR blend, SKI-5/NR blend and NR. The tire products made by these rubbers have similar performance. The tires passed the China National Quality Supervision and Inspection Center of rubber tire certification, which met the requirements of all-steel TBR tire. The homogeneous rare earth IR prepared by Petro China Jilin Petrochemical Company could part instead of NR using in all-steel TBR tire.