MELBOURNE, April 6 (Reuters) - London copper eased on Friday as the dollar rose, but steadied for a second week as worries over an escalating trade conflict between China and the United States eased and expectations of rising seasonal demand in the second quarter supported prices. FUNDAMENTALS * COPPER London Metal Exchange copper slipped by 0.8 percent to $6,764 a tonne by 0049 GMT, paring a 1.4 percent advance from Thursday. Prices were set to climb by half a percent this week, the second such gain in a row. This suggests prices may be settling after logging a 7 percent loss in the first quarter, the biggest downdraft since the fourth quarter of 2015. * SHFE: The Shanghai Futures Exchange is closed for a second day on Friday for the Tomb Sweeping Festival and will reopen on Monday. * TRADE TENSIONS: The United States is willing to negotiate with China on trade, but only if talks are serious, as previous attempts produced little progress, a senior U.S. official told Reuters late on Thursday as trade tensions between the two nations escalated. * DOLLAR: The dollar rose to a two-week high against a currency basket on Thursday, bolstered by a rebound on Wall Street and signs the United States is looking to resolve a trade dispute with China. * CONGO: International mining companies have insisted that Democratic Republic of Congo amend portions of a new mining code to respect exemptions they were granted by its predecessor. * BATTERIES: China's securities regulator has approved the 13.1 billion yuan ($1.97 billion) initial public offering of Chinese battery giant Contemporary Amperex Technology Co Ltd (CATL), the official Xinhua news agency said on Thursday.