CONSHOHOCKEN, Pa. - Quaker Chemical Corporation (NYSE: KWR) today announced that, following nearly 30 years of meritorious service on the Board of Directors, Edwin J. Delattre has decided to retire upon completion of his current term as a Director at Quaker's annual meeting of shareholders in May of 2013. Michael F. Barry, Chairman, Chief Executive Officer and President, commented, "On behalf of Quaker, I want to thank Ed for his significant contributions and dedicated service over the years. ...