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Ficuselastica euphorbiapulcherrima castillaelastica

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Unformatted text preview: ia is a vast equatorial chain of 17,000 islands extending 3,200 miles east to west, between the Indian and Pacific Oceans in Southeast Asia. The largest islands are Sumatra, Java, Kalimantan (Indonesian Borneo), Sulawesi, and the Indonesian part of New Guinea (known as Papua or Irian Jaya). Natural Rubber Imports Natural Rubber Imports U.S. $1,572,358 China 1,524,505 Japan 1,055,333 Korea 455,632 Malaysia 379,094 Germany 396,919 France 337,470 Singapore 273,165 Synthetic and Reclaimed Rubber Synthetic and Reclaimed Rubber China Imports $1,808,852 U.S. 1,302,612 Germany 1,007,180 France 655,382 Belgium 645,159 Italy 603,033 Canada 571,513 Japan 361,700 Synthetic Rubber Scientists began experimenting with synthetic Scientists began experimenting with synthetic rubber in 1906, not until after World War II did we improve the quality to the point that it rivaled that of natural rubber. Wartime necessity became the impetus for the emergence of synthetic on a large­scale basis when governments began building plants to offset natural rubber shortages. Synthetic rubber is produced in manufacturing plants that synthesize it from petroleum and other minerals. Plants producing synthetic rubber were built around the world after 1945, primarily in Europe, North America, and Japan. In 1960 use of synthetic surpassed that of natural for the first time. Synthetic has maintained the lead ever Today about three quarters of the rubber in Today about three quarters of the rubber in production is a synthetic product made from crude oil. There are about 20 grades of synthetic rubber and the intended end use determines selection. In general, to make synthetic rubber, byproducts of petroleum refining called butadiene and styrene are combined in a reactor containing soap suds. A milky looking liquid latex results. The latex is coagulated from the liquid and results in rubber "crumbs" that are purchased by manufacturers and melted into numerous products. Synthetic rubber Synthetic rubber from oil versus natural rubber from trees. Synthetic Rubber Synthetic Rubber Other plants containing latex include figs ( Ficus elastica), Castilla (Panama rubber tree) euphorbias, and the common dandelion. Although, these have not been major sources of rubber, Germany attempted to use such sources during World War Two when it was cut off from rubber supplies. Ficu...
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