Showa Denko KK (TYO:4004) is raising the price of its full line of chloroprene rubber (CR). Marketed as Showa Denko Chloroprene, the various grades of CR are being increased to at least 42 yen ($0.37) per kilogram, coming into effect for delivery from March 1. The company’s CR business is tied up in an environment that has gone into a…