摘要:
Methods for the addition polymerization of cycloolefins using a cationic Group 10 metal complex and a weakly coordinating anion of the formula: [(R′)zM(L′)x(L″)y]b[WCA]d wherein [(R′)zM(L′)x(L″)y] is a cation complex where M represents a Group 10 transition metal; R′ represents an anionic hydrocarbyl containing ligand; L′ represents a Group 15 neutral electron donor ligand; L″ represents a labile neutral electron donor ligand; x is 1 or 2; and y is 0, 1, 2, or 3; and z is 0 or 1, wherein the sum of x, y, and z is 4; and [WCA] represents a weakly coordinating counteranion complex; and b and d are numbers representing the number of times the cation complex and weakly coordinating counteranion complex are taken to balance the electronic charge on the overall catalyst complex.
摘要:
Homopolymers or copolymers of acrylates, homopolymers or copolymers of norbornenes, and copolymers of acrylates with norbornenes, may be prepared by contacting acrylate and/or norbornene monomer reactant under polymerization conditions and in the presence of a solvent with a catalyst system consisting essentially of a Pd(II) dimer component having the formula: [(L)Pd(R)(X)]2, where L is a monodentate phosphorus or nitrogen ligand, X is an anionic group, and R is an alkyl or aryl group.
摘要:
Homopolymers or copolymers of acrylates, homopolymers or copolymers of norbornenes, and copolymers of acrylates with norbornenes, may be prepared by contacting acrylate and/or norbornene monomer reactant under polymerization conditions and in the presence of a solvent with a catalyst system consisting essentially of a Pd(II) dimer component having the formula: [(L)Pd(R)(X)]2, where L is a monodentate phosphorus or nitrogen ligand, X is an anionic group, and R is an alkyl or aryl group.
摘要:
Homopolymers or copolymers of acrylates, homopolymers or copolymers of norbornenes, and copolymers of acrylates with norbornenes, may be prepared by contacting acrylate and/or norbornene monomer reactant under polymerization conditions and in the presence of a solvent with a catalyst system consisting essentially of a Pd(II) dimer component having the formula:[(L)Pd(R)(X)].sub.2,where L is a monodentate phosphorus or nitrogen ligand, X is an anionic group, and R is an alkyl or aryl group.
摘要:
Embodiments in accordance with the present invention encompass photo-imageable compositions that include polymers of acrylate-type monomers and norbornene-type monomers. In some embodiments a catalyst system comprising a cationic or a neutral Pd(II) dimer component having the formula (Allyl)Pd(P(R21)3) or (L′)[(L)Pd(R)(X)]2, respectively is employed to effect polymerization. In other embodiments a free radical or living free radical catalyst is employed to effect polymerization. At least one of the acrylate-type monomers and norbornene-type monomers of the polymer embodiments of the present invention encompass an acid labile moiety. Some polymer embodiments of the present invention include more than one type of acrylate-type monomer and norbornene-type monomer. Embodiments of the present invention include forming a patterned layer on a substrate and some embodiments include transferring the patterned structure to a material layer first formed on the substrate.
摘要:
The invention relates to a method for manufacture of hydrocarbon fuels and oxygenated hydrocarbon fuels such as alkyl substituted tetrahydrofurans such as 2,5-dimethyltetrahydrofuran, 2-methyltetrahydrofuran and mixtures thereof. The method generally entails forming a mixture of reactants that includes carbonaceous material water, a metal catalyst and an acid reacting that mixture in the presence of hydrogen. The reaction is performed at a temperature and for a time sufficient to produce a furan type hydrocarbon fuel. The process may be adapted to provide continuous manufacture of hydrocarbon fuels such as a furan type fuel.
摘要:
Ethylene and/or propylene are polymerized to form high molecular weight, linear polymers by contacting ethylene and/or propylene monomer, in the presence of an inert reaction medium, with a catalyst system which consists essentially of (1) an aluminum alkyl component, such as trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-octylaluminum and diethylaluminum hydride and (2) a Lewis acid or Lewis acid derivative component, such as _B(C6F5)3, {(CH3)2N(H)(C6H5)}+{B(C6F5)4}−, {(C2H5) 3NH}+{B(C6F5)4}−, {(C6F5)3C}+{B(C6F5)4}−, {(C6F5)3C}+{B(C6F5)3(Cl)−}, (C2H5) 2Al(OCH3), (C2H5)2Al(2,6-di-t-butyl-4-methylphenoxide), (C2H5)Al(2,6-di-t-butylphenoxide)2, (C2H5)2Al(2,6-di-t-butylphenoxide), 2,6-di-t butylphenol.methyl-aluminoxane or an alkylaluminoxane, and which may be completely free any transition metal component(s).
摘要翻译:聚合乙烯和/或丙烯以在惰性反应介质存在下使乙烯和/或丙烯单体与催化剂体系接触形成高分子量线性聚合物,催化剂体系基本上由(1)烷基铝组分,如 作为三甲基铝,三乙基铝,三异丁基铝,三正辛基铝和氢化二乙基铝,以及(2)路易斯酸或路易斯酸衍生物组分,例如_B(C 6 F 5)3,{(CH 3)2 N(H)(C 6 H 5) B(C6F5)4} - ,{(C2H5)3NH} + {B(C6F5)4} - ,{(C6F5)3C} + {B(C6F5)4} - ,{(C6F5)3C} + { C 6 F 5)3(Cl) - },(C 2 H 5)2 Al(OCH 3),(C 2 H 5)2l(2,6-二叔丁基-4-甲基苯氧基),(C 2 H 5) 丁基苯酚)2,(C 2 H 5)2 Al(2,6-二叔丁基苯酚),2,6-二叔丁基苯酚甲基铝氧烷或烷基铝氧烷,并且其可以是完全游离的任何过渡金属组分。
摘要:
The present invention is a two-component catalyst system comprising (a) an alkyl magnesium (MgR2) component and (b) a Lewis acid component. The catalyst system is used for catalyzing the oligomerization and polymerization of ethylene and/or &agr;-olefins to form homopolymers and copolymers. The products range from highly linear, high molecular weight, solid polymers to highly branched, lower molecular weight oils.
摘要:
A process for direct oxidative carbonylation of lower alkanes to acids having one greater carbon atom. The process uses a metal salt catalyst promoted by halide ions and/or a metal with oxygen as the oxidant in an aqueous medium. The process is especially effective for conversion of methane to acetic acid.
摘要:
The invention relates to a method for manufacture of hydrocarbon fuels and oxygenated hydrocarbon fuels such as alkyl substituted tetrahydrofurans such as 2,5-dimethyltetrahydrofuran, 2-methyltetrahydrofuran and mixtures thereof. The method generally entails forming a mixture of reactants that includes carbonaceous material water, a metal catalyst and an acid reacting that mixture in the presence of hydrogen. The reaction is performed at a temperature and for a time sufficient to produce a furan type hydrocarbon fuel. The process may be adapted to provide continuous manufacture of hydrocarbon fuels such as a furan type fuel.