LONDON, Sept. 30, 2015 /PRNewswire/ — Unsaturated polyester resins are synthesized by using raw materials such as glycols, phthalic anhydride, and dibasic organic acids. Unsaturated polyester resins are extensively employed in tanks & pipes, building & construction, electrical, marine, transport, artificial stones, and other industries. Building & construction was the largest end-user segment of the unsaturated…