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aliphatic |
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aliphatic /al·i·phat·ic/ (al″ĭ-fat´ik) pertaining to any member of one of the two major groups of organic compounds, those with a straight or branched chain structure.
aliphatic [al′ifat′ik] Etymology: Gk, aleiphar, oil pertaining to fat or oil, specifically hydrocarbon compounds that are open chains of carbon atoms, such as the fatty acids, rather than aromatic ring structures. Aliphatic compounds do not have conjugated unsaturated cyclic structures as are found in aromatic compounds such as benzene and naphthalene. aliphatic 1. fatty or oily. 2. pertaining to a hydrocarbon that does not contain an aromatic ring. aliphatic organic arsenicals include the pharmaceuticals—cacodylic, phenarsonic acids and the herbicides—monosodium and disodium methanearsontes. See also organic arsenical. aliphatic adjective Referring to organic compounds in which the carbons are arranged in straight 'open' chains–eg, alkanes, alkenes, alkynes How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Key statement: A rubber composition comprising (A) an
organopolysiloxane end-capped with alkenyldialkylsiloxy, radicals and
free of aliphatic unsaturation, (B) an organipolysiloxane containing
three alkenyl radicals on molecular side chains, (C) an
organohydrogenpolysiloxane, (D) fumed silica and (E) an addition
reaction catalyst forms a seal member having improved strength and
reduced compression set and useful for sealing a polymer electrolyte
fuel-cell separator. One highlight will be a novel aliphatic PUR cast elastomer
technology said to enable production of highly transparent parts with
unique property profiles. What's more, these
transparent materials, based on aliphatic isocyanates and polyesters,
can be pigmented with any color. |
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