Catalyst – solid sorbent – or support therefor: product or process – Catalyst or precursor therefor – Organic compound containing
Reexamination Certificate
2005-05-31
2005-05-31
Lu, Caixia (Department: 1713)
Catalyst, solid sorbent, or support therefor: product or process
Catalyst or precursor therefor
Organic compound containing
C556S055000, C502S103000, C502S104000, C526S154000, C526S172000
Reexamination Certificate
active
06900155
ABSTRACT:
Titanium complex having general formula (I) (RCOO)nTiXpwherein R is a monofunctional hydrocarbyl radical having from 1 to 20 carbon atoms and a number of halogen atoms, selected from fluorine, chlorine and bromine, preferably chlorine, ranging from 1 to 6; X is chlorine, bromine or a beta-dicarbonyl group such as acetylacetone (AcAc), formylacetone, benzoylacetone, dibenzoylmethane; p+n=2, 3, 4, preferably p+n=3; n is greater than or equal to 1. The preparation of the above complex and its use in the co- and ter-polymerization of α-olefins, are also described.
REFERENCES:
F. Dawans: “Polymerization of butadiene in the presence of perfluorocarboxyl metal halides: control of the stereoregularity and the molecular weight” Angew. Makromol. Chem., vol. 50, No. 1, pp. 169-181, 1976.
S.R. Rafikov et al.: “Effect of the chemical nature of the substituent in titanium tetrachlorid derivatives on the Ziegler polymerization of butadiene” Bulletin of the Academy of Sciences of the USSR, Division of Chemical Science, vol. 24, No. 7, p. 1501, Jul. 1975.
Chemical Abstracts, vol. 104, No. 2 Jan. 13, 1986 abstract No. 6207, XP02181173, abstract only.
Chemical Abstracts, vol. 101, No. 10 Sep. 03, 1984 abstract No. 82965, XP002181174, abstract only.
Masi Francesco
Proto Antonio
Provera Roberto
Ramello Stefano
Santi Roberto
Lu Caixia
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Polimer Europa S.p.A.
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