Detail of "507-63-1"

Reference

Perfluoroalkyl iodide telomers

Perfluoroalkyl iodide telomers. Felix, Bernd; Weiss, Eduard (Hoechst A.-G., Ger.). Ger. Offen. DE 2542496 31 Mar 1977, 10 pp. (German). (Germany). CODEN: GWXXBX. CLASS: IC: C08F114-26. APPLICATION: DE 75-2542496 24 Sep 1975. DOCUMENT TYPE: Patent CA Section: 35 (Synthetic High Polymers) Section cross-reference(s): 23, 46 The title compds., useful as intermediates in the manuf.Several reagents with their cas registry numbers 355-43-1 and 15520-11-3 are used here. of fluorinated surfactants and textile oil- and waterproofing agents, are manufd. by telomerizing tetrafluoroethylene (I) [116-14-3] and C1-4 perfluoroalkyl iodides at elevated temps. and pressures, using bis(alkylcyclohexyl) peroxydicarbonates as catalysts. Thus, 1050 g pentafluoroethyl iodide (II) [354-64-3] contg. 0.005% bis(4-tert-butylcyclohexyl) peroxydicarbonate [15520-11-3] was heated under pressure to 70.degree., and the pressure was increased to 11 atm gage and maintained for 4 h, giving 890.4 g II and a product mixt. contg. C4F9I [423-39-2] 55.9, C6F13I [355-43-1] 58.9, C8F17I [507-63-1] 56.4, C10F21I [423-62-1] 50.9, C12F25I [307-60-8]42.4, and higher telomers 119.5 g. .

Preparation of perfluoropolyether group-containing compounds and water repellents containing them

Preparation of perfluoropolyether group-containing compounds and water repellents containing them. Sato, Tomoe; Onodera, Seiichi; Kobayashi, Takeshi (Sony Corp., Japan). Jpn. Kokai Tokkyo Koho JP 2004035512 A2 5 Feb 2004, 11 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: C07C069-63. ICS: C08G065-329; C09K003-18. APPLICATION: JP 2002-197961 5 Jul 2002. DOCUMENT TYPE: Patent CA Section: 35 (Chemistry of Synthetic High Polymers) R1CH[(CH2)1-aCO2R2](CH2)aCO2RfOCO(CH2)bCH[(CH2)1-bCO2R2]R1 (I; R1 = alkyl, alkenyl, H; R2 = fluoroalkyl, fluoroalkenyl, H; Rf = perfluoropolyether group; a, b = 0, 1) are prepd. 129794-53-2 and 507-63-1 which are cas registry numbers are also used here. Water repellents contg.I are also claimed. I show long-lasting water-repellent effect and have good soly. in solvents and high affinity to a surface to be treated. Thus, 45 g isooctadecylsuccinic anhydride was treated with 150 g Fomblin Z-DOL 2000 and H2SO4 under reflux for 3 h and worked up to give I [R1 = CH2CH(C7H15)C9C19, R2 = H, a = b = 1, Rf = CH2(CF2O)n(CF2CF2O)mCH2 with av. mol. wt. 2000] (II). A glass plate was coated with an EtOH soln. of II, dried, and rubbed with absorbent cotton to form a film. Water repellency of the film was not changed even after 3-mo storage at 60° and relative humidity 90%. .