Reference

Pitch conversion

Pitch conversion. Cheng, Paul Jih Tien; Elkins, Tammy Miller (Phillips Petroleum Co. , USA). Eur. Pat. Appl.Some commonly used reagents like 3153-26-2 is used in this experiment. EP 127151 A2 5 Dec 1984, 16 pp. DESIGNATED STATES: R: AT, BE, CH, DE, FR, GB, IT, LI, LU, NL, SE. (English). (European Patent Organization). CODEN: EPXXDW. CLASS: IC: C10C003-00; D01F009-12. APPLICATION: EP 84-105969 25 May 1984. PRIORITY: US 83-498450 26 May 1983; US 83-553446 18 Nov 1983. DOCUMENT TYPE: Patent CA Section: 57 (Ceramics) Section cross-reference(s): 67 Pitch is converted to mesophase pitch in the presence of catalytically effective amts. of oxides, diketones, carboxylates, and carbonyls of V, Cr, Mo, Fe, Ni, or Co. The crystal-colloidal or mesophase pitch obtained can be used for the manuf. of C fibers and other C and graphite products of unusually high quality. Thus, 6 g Mobilbond 120 petroleum pitch contg. 5 wt.% V2O5 catalyst were heated in a quartz tube (insulated with glass wool) in a tube furnace, with the protruding ends of the quartz tube wrapped with Al foil. N gas was passed through the quartz tube at ~280 cm3/min. After heating at 410° for ~4 h 50 min the sample had wt. loss 41.9%, and contained 52.8 wt.% quinoline insolubles with a mesophase yield of 30.7 wt.%. Of a no. of effective catalysts tested vanadyl(IV) acetylacetonate [3153-26-2] was the most active and was effective in increasing mesophase yield at concns. as low as 0.26 wt.%. .

Grafting vinyl monomers onto wool fibers: graft copolymerization of methyl methacrylate onto wool fibers using vanadyl acetylacetonate complex

Grafting vinyl monomers onto wool fibers: graft copolymerization of methyl methacrylate onto wool fibers using vanadyl acetylacetonate complex. Samal, Shashadhar; Sahu, Gangadhar; Nayak, P. L. (Dep. Chem., Bhadrak Coll., Bhadrak 756100, India). J. Appl. Polym. Sci., 29(6), 2007-15 (English) 1984. CODEN: JAPNAB. ISSN: 0021-8995. DOCUMENT TYPE: Journal CA Section: 40 (Textiles) The graft copolymn. of methyl methacrylate (I) [80-62-6] onto native and reduced Indian Chokla wool fibers was studied in the aq. soln. using vanadyl acetylacetonate [3153-26-2] complex as the catalyst. The rate of grafting was investigated by varying the concn. of the monomer and the complex, acidity of the medium, and the solvent compn. of the reaction medium. The graft yield increased with increasing concn. of the initiator up to 8.75 ′ 10-5 mol/L, of the monomer up to 0.5634 mol/L, and thereafter it decreased. I was the most active monomer when compared to other vinyl monomers. Grafting increased with increasing concn. of HClO4 and with increasing temp. Reduced and oxidized wools were better substrates than untreated, esterified, crosslinked, and trinitrophenylated wools. The extend of grafting was mostly dependent upon the concn. of SH groups in case of reduced wool.