	atlantic richfield arc unit buys technology atlantic richfield co said it has uired exclusive worldwide rights to the methyl methacrylate technology of texas eastern corp s halcon sd group affiliate for undisclosed terms the company said the technology will allow it to introduce a cleaner and more efficient way of making methyl methacrylate a liquid monomer used to make resins for acrylic sheet coatings molded parts and products and plastic impact modifiers arco said it is reviewing options for commercialization of the technology reuter 
