摘要:
A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and improved olefin polymerization processes resulting therefrom.
摘要:
A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and improved olefin polymerization processes resulting therefrom.
摘要:
A composition comprising a polymerization modifier for the copolymerization of at least one olefin monomer and propylene and a polymerization process using the polymerization modifier.
摘要:
A composition comprising a polymerization modifier for the copolymerization of at least one olefin monomer and 1-octene and a polymerization process using the polymerization modifier.
摘要:
A composition comprising a polymerization modifier for the copolymerization of at least one olefin monomer and 1-octene and a polymerization process using the polymerization modifier.
摘要:
A combinatorial method for identifying a catalyst composition for use in the homogeneous addition polymerization of an olefin monomers, said catalyst composition comprising a transition metal compound, a cocatalyst and a polymerization modifier, as well as catalyst compositions and improved olefin polymerization processes resulting therefrom.
摘要:
Catalyst compositions that are highly tolerant of catalyst poisons for use in addition polymerizations comprising a catalytic derivative of a Group 4 metal complex, a cocatalyst, and a Group 13 metal amide compound.
摘要:
A supported catalyst composition suitable for use in converting synthesis gas to alcohols comprises a catalytic metal, a catalyst promoter and a catalyst support.
摘要:
A process and catalyst for the hydro-oxidation of an olefin having three or more carbon atoms, such as propylene, to form an olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction conditions in the presence of hydrogen and a catalyst. The catalyst contains oxidized gold dispersed on a titanium-containing support, preferably, a support having a plurality of titanium coordination environments, for example, titanium grafted onto a titanosilicate. Selectivity to olefin oxide is high at good conversion of the olefin. The catalyst uses hydrogen efficiently and exhibits a long lifetime.
摘要:
A moiety with the formula:A-X-Ar.sup.1 -O-Ar.sup.2reacts in the presence of a catalyst with a moiety of the formula:B-Ar.sup.3 -O-Yto form a linkage of the formula:A-X-Ar.sup.1 -O-Ar.sup.3 -B+Ar.sup.2 -O-Ywherein Ar.sup.1, Ar.sup.2 and Ar.sup.3 are aromatic moieties, X is an activating group, Y is a hydrogen, a trihydrocarbylsilyl, a trihydrocarbyltin, or a carbonyl moiety, and the catalyst is a catalyst capable of abstracting the group Y from the second moiety. The reaction can be used to create a polyarylether polymer.