| 摘要 |
<p>1,125,680. Compositions containing EPDM rubber. UNIROYAL Inc. 14 Feb., 1967 [4 March, 1966], No. 6973/67. Headings C3P and C3Q. A composition suitable for forming the sidewall portion of a tyre comprises a blend of one or more elastomers with a terpolymer of two different alpha-monoolefins and dicyclopentadiene, there being 10 to 35 parts of terpolymer in 100 parts of total elastomer. The other elastomer may be natural rubber, polyisoprene, a mixture of neoprene rubber and natural rubber, a mixture of SBR and natural rubber, a mixture of polyisoprene and neoprene rubber, and a mixture of chlorosulphonated polyethylene, natural rubber and neoprene rubber. Fillers and vulcanizing agents may be present. The composition does not require any additional antiozonant. The EPDM elastomer may be oilextended.</p> |
