Rubber Nd-PBR is used in the tread. It helps to reduce rolling resistance of a tire, as well as power consumption. The Nd-PBR also reduces abrasion therefore it is suitable to make tires more durable.
The isoprene rubber or polyisoprene rubber has a chemical structure similar to a natural rubber.
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The IIR rubber copolymer of isobutylene and isoprene is known as butyl rubber. The most important applications of butyl rubber are in the tire industry. The second major field of application is in the pharmaceutical industry. It is also used in the manufacture of sheets of reduced thickness for insulation in a variety of engineered products including support and manufacture of protective clothing. The butyl rubber due to its excellent sealing ability, is also suited for producing capacitors seals, widely used in the electronics industry worldwide.
The bromobutyl rubber (BIIR) is a brominated butyl rubber, with structure and properties like the chlorobutyl, containing 1.8 to 2.4% of bromine, located on isoprene units. It has, like the chlorobutyl rubber, the properties of butyl rubber, but has a higher vulcanization rate and good compatibility with other types of rubbers. It is used when it is necessary excellent waterproofing, excellent resistance to heat and aging. The most applications of bromobutyl rubber are in the pharmaceutical industry, in the tire industry and in the manufacture of heat resistant conveyor belts, adhesives, coating of tanks for vulcanizing at enviroment temperature and cements to promote a good rubber-rubber adhesion by vulcanisation process.