| 摘要 |
The present invention relates to a synthetic rubber-based composition comprising:a low molecular weight rubber selected from polybutadiene comprising from about 75% to about 92% cis-1,4 units, a copolymer comprising butadiene units and from about 27 wt % to about 45 wt % pentadiene units, and mixtures thereof,a high molecular weight rubber comprising isobutylene units and not more than about 6 wt % isoprene units, the high molecular weight rubber being present in an amount of from about 0.5 parts to about 4 parts by weight based on the weight of low molecular weight rubber,sulfur,a vulcanization accelerator, andan active fillerwhere the sulfur, the accelerator, and the active filler are each present in the form of a powder within a particular particle size range(s). Additionally, these compositions may be used to form coatings and rubber concretes. The invention also relates to methods of producing such compositions, coatings and rubber concretes. |
