American Heritage® Dictionary of the English Language, Fourth Edition
- n. A colorless volatile liquid, C5H8, used chiefly to make synthetic rubber.
Century Dictionary and Cyclopedia
- n. A hydrocarbon (C5-H8), one of the hemiterpenes, produced in the destructive distillation of india-rubber or gutta-percha, and also obtainable from oil of turpentine. It is a colorless, highly volatile liquid, which as special interest from the fact that it is converted into india-rubber by prolonged contact at ordinary temperature with strong hydrochloric acid or nitrosyl chlorid.
Sadtler, Handbook of Indust. Chem., p. 99.
- n. organic chemistry An unsaturated hydrocarbon, C5H8, that is readily polymerized; natural rubber (caoutchouc) is cis-1,4-polyisoprene, and trans-1,4-polyisoprene is present in gutta-percha and balata; it is the structural basis for the terpenes.
GNU Webster's 1913
- n. (Chem.) An oily, volatile unsaturated hydrocarbon (C5H8), obtained by the distillation of caoutchouc or gutta-percha, and used to make synthetic rubber by polymerization. In organic chemistry, it is viewed conceptually as the building block of the terpene series of hydrocarbons.
- iso- + pr(opyl)ene. (American Heritage® Dictionary of the English Language, Fourth Edition)
“A tanker hauling isoprene, which is a liquid used to make synthetic rubber, overturned on I-68 going westbound near the 21st mile marker.”
“The process can use sugars derived from sugar cane, corn, corn cobs, switchgrass or other biomass to produce the ingredient, a biochemical called isoprene, derived from renewable raw materials.”
“We also extended the mechanism to include aromatic hydrocarbons, and biogenics such as isoprene and terpenes; those wound up being closer to explicit/surrogate mechanisms.”
“Of 11 other compounds monitored, only isoprene, a natural component of exhaled breath, was significantly elevated on the third day after vaccination, possibly reflecting airway oxidative stress, researchers said.”
“PALCA: The X-ray pictures of the particular block copolymer Bates was studying - and in case you're interested, it was a mix of poly isoprene and poly lactide and poly styrene, poly isoprene and poly ethylene oxide anyway, those X-ray pictures suggested something unusual was going on.”
“About one billion car tires are made each year and roughly a quarter of each tire is made from isoprene, with each single tire using about seven gallons of crude oil.”
“When making synthetic rubber based on oil, isoprene is isolated as a derivative and used it to make synthetic rubber for car tires.”
“According to Mr. Knutzen, the process works like this: " Our scientists have genetically modified bacteria to eat sugar, feed it in the right environment and with the right nutrients, and convert it into something we call bio-isoprene, which can then be used to make synthetic rubber, " says Mr. Knutzen, " emphasizing that this is " biotechnology on the edge.”
“Claudia Vickers, a senior research fellow at the Australian Institute for Bioengineering and Nanotechnology, says that the Genencor and Goodyear bio-isoprene collaboration over the past couple of years is impressive.”
“The bio-isoprene project shows how biotechnology is really starting to deliver on the promises that researchers have made for the past decade, Dr. Vickers says.”
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