New stringent regulations by local and federal authorities are pushing the acceptable VOC level in paints down to much lower levels,in some cases as low as 50-100 g/liter.Advances in waterborne coatings technology have provided the market with new "green",environmentally friendly and economical coatings options,many of them based on acrylic emulsions and polyurethane dispersions.According to the 2005 Chemical Economics Handbook,waterborne systems for architectural and industrial maintenance coatings comprised approximately 40% of the total coatings market globally in the year 2004.1
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机译：地方和联邦政府的新严格规定将涂料中的VOC含量降低到更低的水平，在某些情况下甚至低至50-100 g /升。水性涂料技术的进步为市场提供了新的“绿色”产品，环保和经济的涂料选择，其中许多基于丙烯酸乳液和聚氨酯分散体。根据2005年《化学经济手册》，2004.1年，用于建筑和工业维护涂料的水性体系约占全球涂料总市场的40％。
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