POLYISOPRENE

Polyisoprene rubber is a artificial rubber produced by using bulk polymerization or answer polymerization of isoprene monomers underneath the motion of a catalyst. Because its micro molecular shape is shut to that of herbal rubber, it is additionally many times recognized as artificial herbal rubber. According to the unique buildings of isoprene units, polyisoprene rubber can be divided into 4 isomers: cis-1,4-polyisoprene rubber (referred to as isoprene rubber), trans-1,4-polyisoprene rubber (also acknowledged as synthetic Eucommia ulmoides rubber, Gutapo rubber or Balata rubber), cis-3,4-polyisoprene rubber, and 1,2-polyisoprene rubber, Only cis 1,4-polyisoprene rubber and trans 1,4-polyisoprene rubber have been industrialized. In cis -1,4 polyisoprene rubber, it can be divided into excessive cis and medium cis polyisoprene rubber in accordance to the cis 1,4 structural content; According to the initiation system, it can be divided into lithium series, titanium sequence and uncommon earth sequence polyisoprene rubber. High cis 1,4-polyisoprene rubber is mostly used as a alternative for herbal rubber in the manufacturing of passenger vehicle tires, semi metal passenger automobile radial tires, and mild truck radial tires. In addition, it can additionally be used in the manufacturing of conveyor belts, rubber hoses, tapes, sponges, adhesives, rubber shoes, wires and cables, sports activities equipment, and scientific materials. Trans-1,4-polyisoprene rubber is on the whole used in the manufacturing of shock absorbing merchandise for tires, high-speed trains, and automobiles, as nicely as in the manufacturing of clinical materials, structure reminiscence materials, and shoe materials.