Detail of "1071-76-7"

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Acyclic dimerization of isoprene with Ziegler-Natta-type zirconium-containing catalyst systems

Acyclic dimerization of isoprene with Ziegler-Natta-type zirconium-containing catalyst systems. Fuellbier, Harry; Erler, Klaus; Gaube, Walter (Sekt. Chem., Ernst-Moritz-Arndt-Univ., Greifswald, Ger. Dem. Rep.). Wiss. Z. Ernst-Moritz-Arndt-Univ. Greifsw., Math.-Naturwiss. Reihe, 35(1), 39-42 (German) 1986. CODEN: WZEMAX. ISSN: 0138-2853. DOCUMENT TYPE: Journal CA Section: 35 (Chemistry of Synthetic High Polymers) The acylic head-tail dimer of isoprene, E,E-2,6-dimethylocta-1,3,6-triene (I) [23282-38-4], was selectively prepd. in the presence of Zr(OBu)4 [1071-76-7]-PPh3 [603-35-0]-Et3Al2Cl3 [12075-68-2] catalysts contg. high concns. of PPh3 ligand to suppress spontaneous polymn. Catalyst systems with PPh3:Zr = 4 gave 89% isoprene conversion and a min. polymer content. The catalyst activity depended on the Al-Zr ratio, and the dimer yield was max. (71%) at Al:Zr = 5. The catalytic properties and parameters affecting them were discussed.In this experiment, several chemicals are used like 7446-70-0 and 603-35-0 The catalyst system gave a good lab. method for prepg. I. .

Complexes between alkoxy group-containing zirconium compounds and cobalt salts of carboxylic acids

Complexes between alkoxy group-containing zirconium compounds and cobalt salts of carboxylic acids. Sugiyama, Iwakichi; Takaoka, Yukihisa; Endo, Kiyoshi (Matsumoto Seiyaku Kogyo Co., Ltd., Japan). Japan. Kokai JP 52023026 21 Feb 1977 Showa, 8 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: IC: C07F007-00. APPLICATION: JP 75-96842 9 Aug 1975. DOCUMENT TYPE: Patent CA Section: 42 (Coatings, Inks, and Related Products) Cobalt octoate (I) or Co naphthenate reacted with Zr(OBu)4 or a similar compd. to prep. complexes used as crosslinking catalysts for soybean oil, a polyester, or a similar coating material. Thus, Zr(OBu)4 and I were dissolved in iso-PrOH to concn. 0.0548 mol/100 mL, mixed in Zr-Co ratio 1:2, heated at reflux for 15 min, and dried to prep. a waxy complex [1071-76-7].