The high attenuation rubber constituent and the exemption shaking structure null which uses

摘要

PURPOSE: To obtain a rubber composition, containing a specific rubber and a filler in specified amounts, having high attenuating properties, excellent in cold resistance, fracture resistance characteristics, stability for a long period, earthquakeproof properties, etc., and useful as a base-isolated structure, etc. ;CONSTITUTION: This composition contains (A) 100 pts.wt. rubber component consisting essentially of a synthetic polyisoprene rubber and (B) 40-100 pts.wt. silica as a filter.;COPYRIGHT: (C)1995,JPO