ester rubber
51Petrochemical — Petrochemicals are chemical products made from raw materials of petroleum or other hydrocarbon origin. Although some of the chemical compounds that originate from petroleum may also be derived from World production of ethylene is around 110… …
52Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …
53Dicarboxylic acid — Dicarboxylic acids are organic compounds that contain two carboxylic acid functional groups. In molecular formulae for dicarboxylic acids, these groups are often written as HOOC R COOH, where R may be an alkyl, alkenyl, alkynyl, or aryl group.… …
54Hair care — is an overall term for parts of hygiene and cosmetology involving the hair on the human head. Hair care will differ according to one s hair type and according to various processes that can be applied to hair. All hair is not the same; indeed,… …
55Wine fault — A wine fault or defect is an unpleasant characteristic of a wine often resulting from poor winemaking practices or storage conditions, and leading to wine spoilage. Many of the compounds that cause wine faults are already naturally present in… …
56Roger Adams — Infobox Scientist name = Roger Adams image width = caption = Roger Adams birth date = birth date|1889|1|2 birth place = Boston, Massachusetts residence = nationality = American death date = death date and age|1971|7|6|1889|1|2 death place =… …
57Hydroxylammonium sulfate — Chembox new ImageFile = Hydroxylammonium sulfate 2D A.png ImageFile1 = Hydroxylammonium sulfate unit cell 3D balls.png Name = Hydroxylammonium sulfate OtherNames = Hydroxylamine sulfate Section1 = Chembox Identifiers CASNo = 10039 54 0 EINECS =… …
58Kautschuk [3] — Kautschuk. Die Gattung Hevea umfaßt etwa zwanzig Arten, deren geographische Verbreitung sich über das ganze Amazonastal und einen Teil des oberen Orinoco erstreckt. Eine kleine Zahl dieser Arten liefert den Borrachakautschuk von Brasilien und den …
59performing arts — arts or skills that require public performance, as acting, singing, or dancing. [1945 50] * * * ▪ 2009 Introduction Music Classical. The last vestiges of the Cold War seemed to thaw for a moment on Feb. 26, 2008, when the unfamiliar strains …
60polymer — /pol euh meuhr/, n. Chem. 1. a compound of high molecular weight derived either by the addition of many smaller molecules, as polyethylene, or by the condensation of many smaller molecules with the elimination of water, alcohol, or the like, as… …
