PPG Industries reports all-time records for sales and profits in its optical and specialty materials segment for the second quarter ended June 30, with gains in both businesses. Sales in this segment, which includes silicas in addition to well-know ophthamic coatings and materials, grew by 8 percent to $326 million. In particular, sales of Transitions lens products rose by about 30 percent in emerging markets, which now account for about one-quarter of Transitions sales, thanks in part to higher selling and advertising costs, which will continue to remain high for the balance of the year. Sales of optical products in mature regions were up in mid-single digits. The segment generated earnings of $90 million, up 5 percent from a year ago, indicating a drop in the operating margin to 27.6 percent from 28.6 percent. Overall, the group's net profit for the quarter increased to $340 million from $272 million in the year-ago period on a 15 percent sales increase to $3.98 billion, aided in part by price increases and by favorable currency exchange rates.