Detail of "1638-86-4"

Reference

(Meth)allylphosphinic acid alkyl esters

(Meth)allylphosphinic acid alkyl esters. Arend, Guenter; Block, Hans Dieter (Bayer A.-G.In this study，64528-79-6 is also used., Ger.). Ger. Offen. DE 2601467 21 Jul 1977, 12 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C07F009-32. APPLICATION: DE 76-2601467 16 Jan 1976. DOCUMENT TYPE: Patent CA Section: 35 (Synthetic High Polymers) Treatment of (meth)allyl chloride with diethyl methanephosphonite (I) [15715-41-0] or diethyl benzenephosphonite [1638-86-4] in the presence of nonvalent, monovalent, or divalent Ni catalysts gave CH2:CRCH2P(O)R1(OEt) (R = H or Me; R1 = Me or Ph), useful for the manuf. of fire-resistant polymers. Thus, 68 parts I was refluxed under N in the presence of a Raney Ni catalyst and treated with 42.1 parts allyl chloride [107-05-1]. The mixt. was heated 1 h at 140.degree. and distd. in vacuo to give ethyl allylmethylphosphinate [64528-80-9]. .

Polyphosphinate flame retardants

Polyphosphinate flame retardants. Moedritzer, Kurt (Monsanto Co., USA). U.S. US 4087403 2 May 1978, 6 pp. (English). (United States of America). CODEN: USXXAM. CLASS: IC: C08K005-53. NCL: 260045700P. APPLICATION: US 76-662766 1 Mar 1976. DOCUMENT TYPE: Patent CA Section: 36 (Plastics Manufacture and Processing) Polyphosphinates, e.g. (O-p-C6H4-P(C6H5)(O))n (I) [67252-23-7], were prepd. and could be used as fireproofing agents for shaped plastic articles. The polyphosphinates were manufd. from (hydroxyaryl)arylphosphinic halides by dehydrohalogenation at 50-300°. Thus, p-bromoanisole [104-92-7] 84.7, diethyl phenylphosphonite [1638-86-4] 86.58, and NiBr2 9.0 g were heated to yield Et (p-methoxyphenyl)phenylphosphinate which was hydrolyzed to give p-(methoxyphenyl)phenylphosphinic acid which was treated with BBr3 to give (p-hydroxyphenyl)phenylphosphinic acid (II) [67291-32-1]. II was treated with thionyl chloride to yield the acid chloride which was dehydrochlorinated to yield I. Addn. of 10% I to poly(ethylene terephthalate) [25038-59-9] gave 0.07 in. thick sheets whose oxygen index value was 24.0 compared to 19.04 unmodified polyester.