SK Chemicals Co. on Tuesday reported its second-quarter net income of 5.1 billion won (US$3.7 million), swinging from a loss of 15.5 billion won a year earlier.Operating income for the April-June period was 8.9 billion, compared with a loss of 13.8 billion won a year ago, the company said in a regulatory filing. Sales rose 11.5 percent to 413.9 billion won.(END)Source: Yonhap News Agency