| 摘要 |
1,246,278. Pneumatic tyres. T. MIYAZATO. 11 Sept., 1968 [13 Sept., 1967], No. 43187/68. Heading B7C. [Also in Division C3] The inside portions of a pneumatic tyre are coated with a composition comprising an aqueous dispersion of polyvinyl acetate, a surfaee active agent and ground rubber particles of size 50 to 1200 Á. The composition may also contain an antifreeze agent, e.g. ethylene glycol. The composition preferably replaces the conventional inner tube. |
