| 摘要 |
<p>New compounds (where n >2 esp. 2-10 and Z is H, a metal esp. Na, K, opt. substd NH4 ethylenic unsatd. and/or substd. aliphatic or cycloaliphatic hydrocarbon R pref. 1-4C, where RCl is volatile at the reaction temperature). RCl is eliminated from ClCH2P(OR)2 by heating in an inert atmosphere and the product is oxidised to I, II on contact with air. Acid (I, Z = H) may be prepared from esters thus formed by hydrolysis with hot conc. H2SO4 or by pyrolysis of (I, Z = R = isoPr) at 180 degrees C. Partial hydrolysis of esters may be carried out by using calculated quantities of KOH or NaOH. Esters are useful as detergent additives, dry cleaning agents, spreading agents, fireproofing materials. Salts act as powerful complexing agents in detergents and acid (I) can be used for cleaning metal components is acid cleaning baths. Water soluble salts act as stabilisers for peroxide and peracid solutions.</p> |
