Osaka Soda has announced that it will raise the prices of four synthetic rubber and synthetic resin products, starting with shipments on July 1. The price increases are 30 yen ($.19) per kilogram for Epichromer epichlorohydrin rubber and Racrester acrylic rubber, 35 yen per kilogram for DAP resin-based Daiso DAP monomer and 45 yen per kilogram for Daiso DAP. The…