Detail of "682-30-4"

Reference

Halohydrin phosphonates and their use in making polyurethane foams fire-resistant

Halohydrin phosphonates and their use in making polyurethane foams fire-resistant. Sturtz, Georges; Belbeoch, Alain; Damin, Bernard; Clement, Jean Claude; Lecolier, Serge (Societe Nationale des Poudres et Explosifs, Fr.). Fr. Demande FR 2332282 17 Jun 1977, 15 pp. (French). (France). CODEN: FRXXBL. CLASS: IC: C07F009-40. APPLICATION: FR 75-35572 21 Nov 1975. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) An ethylenically unsatd.There are some reagents like 682-30-4 is used in this study. phosphonate deriv. 682-30-4 which is the cas registry number is also used here. was reacted at pH ~1 in HCl with NaOX (X = Cl, Br) to give halohydrin phosphonate fireproofing agents which were used in polyurethane foams at levels sufficient to give 0.8-2.0% P content. Diethyl vinylphosphinate [682-30-4] was prepd. by treatment of (EtO)3P with EtBr followed by dihydrobromination, and was then treated with NaOCl in HCl at pH 1 in the presence of KI to give diethyl 1-chloro-2-hydroxyethyl phosphonate [65345-02-0] which was added to a polyurethane foam to provide 1% P. The foam had limiting O index 0.215 compared with 0.172 when no fireproofing agent was used and 0.198 when di-Et (2-hydroxyethyl)aminomethyl phosphinate was added. ..

Kinetics and mechanisms of the radical polymerization of dialkyl vinylphosphonates

Kinetics and mechanisms of the radical polymerization of dialkyl vinylphosphonates. Levin, Ya. A.; Breus, A. A.; Ivanov, B. E. (Inst. Org. Fiz. Khim. im. Arbuzova, Kazan, USSR). Dokl. Akad. Nauk SSSR, 236(2), 387-9 [Phys. Chem.] (Russian) 1977. CODEN: DANKAS. DOCUMENT TYPE: Journal CA Section: 35 (Synthetic High Polymers) Rate consts., activation energies, and preexponential factors of chain propagation and termination were detd. for light-initiated polymn. of dimethyl [4645-32-3], diethyl [682-30-4], and diisopropyl [4472-27-9] vinylphosphonates in the presence of di-tert-Bu peroxide, and a mechanism of the reaction was suggested. The values of the Q factors and polymn. enthalpies of the investigated monomers were within the range of those of vinyl acetate and methyl acrylate, whereas kinetic parameters corresponded to those of styrene and butadiene. The obsd. results were explained by an energetically favorable conformation of the growing macroradical in which the radical of the terminal unit interacted with O of the PO group in the penultimate unit leading to b-cleavage of alkyls in the alkyl-P-O group. The suggested intramol. chain transfer was also consistent with the d.p. results lower than expected on the basis of polymn. rates.