BROWN DISC TO BUY RHONE-POULENC <RHON.PA> UNIT Brown Disc Products Co Inc, a unit fo Genevar Enterprises Inc, said it has purchased the ongoing business, trademarks and certain assets of Rhone-Poulenc's Brown Disc Manufacturing unit, for undisclosed terms. Rhone-Poulenc is a French-based chemical company. Under the agreement, Rhone-Poulenc will supply magnetic tape and media products to Brown Disc Products.