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Polybutadiene [butadiene rubber, BR] is a synthetic rubber. It offers high elasticity, high resistance to wear, good strength even without fillers, and excellent abrasion resistance when filled and vulcanized. "Polybutadiene" is a collective name for homopolymers formed from the polymerization of the monomer 1,3-butadiene.
Image:BlankEurope.png – A large map of Europe. 1236x1245px 44.18 KB. Image:BlankMap-Europe.png – Europe as far east as western Russia , western Turkey , and Cyprus . Some of the world's smallest states (e.g., Monaco , Vatican City ) appear as single pixels.
In other parts of the world, including South America, Eastern Europe, China, and India, butadiene is also produced from ethanol. While not competitive with steam cracking for producing large volumes of butadiene, lower capital costs make production from ethanol a viable option for smaller-capacity plants. Two processes were in use.
The continent of Europe comprises a large part of the Palearctic ecozone, with many unique biomes and ecoregions. Biogeographically, Europe is tied closely to Siberia, commonly known as the Euro-Siberian region. The European Environmental Agency (EEA) divides Europe into a total of eleven terrestrial biogeographical regions and seven regional ...
Polybutene is an organic polymer made from a mixture of 1-butene, 2-butene, and isobutylene.Ethylene steam cracker C4s are also used as supplemental feed for polybutene. It is similar to polyisobutylene (PIB), which is produced from essentially pure isobutylene made in a C4 complex of a major refinery.
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English: Map of the most populous part of Europe, showing physical, political and population characteristics, in Mercator projection, with legend, as per 2018. Compiled using QGIS and CC-0 Natural Earth geodata.
Description: Map of Europe for use on Wikivoyage, multilingual SVG source: Date: October 2010: Source: Own work based on the blank map of Europe by Historicair: Author: Stefan Ertmann, Dutch translation by Globe-trotter, French translation by Joelf, Russian translation by Alexander Tsirlin, Ukrainian translation by Vladimirs Metencuks