vinylidenen.
/vʌɪˈnɪlɪdiːn//vʌɪˈnʌɪlɪdiːn/ Chemistry.
The bivalent radical CH2 = C<; frequently attributive. Cf. polyvinylidene n.
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ethylene1853
ethylidene1859
propylidene1876
pentamethylene1887
vinylidene1898
isopropylidene1900
1898 Jrnl. Chem. Soc. 74 i. 188 Acetic anhydride converts it first into oxanilide, and subsequently into vinylidene oxanilide.
1940 Official Gaz. (U.S. Patent Office) 26 Nov. 809/2 The Dow Chemical Company, Midland, Mich. Filed Sept. 27, 1940. Saran for thermoplastic synthetic resins comprising polymers and co-polymers derived from vinylidene chloride. Claims use since Aug. 21, 1940.
1980 Chem. in Brit. 16 473/1 Vinylidene, indole or leuco crystal violet are used as the colour formers.., and carbon tetrabromide or iodoform as the activator.
This entry has not yet been fully updated (first published 1986; most recently modified version published online September 2018).
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n.1898- reticular fibre
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