单词	chloroprene
释义	chloroprene noun chlo·​ro·​prene ˈklȯr-ə-ˌprēn  : a colorless liquid C4H5Cl used especially in making neoprene by polymerization Example Sentences Recent Examples on the Web Denka officials in October announced they had cut chloroprene by 86%. Gordon Russell, ProPublica, 19 Dec. 2019 The Denka plant is the only one in the country that emits chloroprene, which was classified as a likely carcinogen by the U.S. Environmental Protection Agency in 2010. Gordon Russell, ProPublica, 25 Nov. 2019 Production of neoprene—dive wetsuits, insulated lunch boxes, beer koozies—emits toxic chloroprene, and this is the only plant in America that produces it. Justin Nobel, Longreads, 13 July 2017 Most of the violations stemmed from leaking or uncapped pipes releasing chloroprene, which Denka uses to make neoprene for wet suits and other materials. Drew Broach, NOLA.com, 27 June 2017 DuPont opened the factory on a former sugar plantation called Belle Point in 1964, and its smokestacks have been pumping out chloroprene over this mostly African-American neighborhood since 1969. Charles P. Pierce, Esquire, 19 May 2017 Word History Etymology chlor- + isoprene First Known Use 1931, in the meaning defined above
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