A method of carrying out a metathesis reaction includes the combination of at least one alkene or non conjugated diene with a Ruthenium-based catalyst with an cyclic(alkyl)(amino)carbene ligand to form a reaction mixture and heating the reaction mixture to a temperature of 100 C. or greater. The reaction can be an ADMET, ROMP, a metathesis ring-closure or an olefin exchange reaction.

A tetraanionic OCO pincer ligand metal-oxo-alkylidene complex is prepared from a trianionic pincer ligand supported metal-alkylidyne. The metal can be tungsten or other group 5-7 transition metal. The tetraanionic pincer ligand metal-oxo-alkylidene complex, a trianionic OCO pincer ligand metal complex, or a trianionic ONO pincer ligand metal complex can be used to polymerize cycloalkenes. The poly(cycloalkene)s are predominantly cis-alkene macrocyclics.

A method for preparing a poly(phenylene ether) includes oxidatively polymerizing a poly(phenylene ether) starting material having an initial intrinsic viscosity in the presence of an organic solvent and a copper-amine catalyst to form a reaction mixture including a poly(phenylene ether) having a final intrinsic viscosity that is at least 50% greater than the initial intrinsic viscosity. The method further includes terminating the oxidative polymerization to form a post-termination reaction mixture; combining an aqueous solution comprising a chelant with the post-termination reaction mixture to form a chelation mixture of an aqueous phase comprising chelated copper ion, and an organic phase comprising dissolved poly(phenylene ether); separating the aqueous phase and the organic phase; and isolating the poly(phenylene ether) from the organic phase. High molecular weight poly(phenylene ether)s prepared according to the method described herein are also disclosed.

A process to form a cyclic olefin polymerization catalyst which includes contacting a metal alkoxide with a transition metal halide to form a transition metal precatalyst, and contacting the transition metal precatalyst with a metal alkyl activator to form the activated catalyst comprising a transition metal carbene moiety. A cyclic olefin polymerization process is also disclosed.

A supported catalyst system is based on a transition metal carbene including the moiety M1=CR*).sub.2, wherein M.sup.1 is the transition metal and R* is hydrogen or a C.sub.1-C.sub.8 hydrocarbyl. The catalyst system can be supported on a metal oxide support such as silica or the catalyst can be self-supporting. Methods of making the catalyst system can involve precursors based on and/or reacted with aluminum alkyls, halides, and/or alkoxides. Methods of polymerizing cyclic olefins with the catalyst system can obtain polyalkenamers, cyclic olefin polymers, cyclic olefin copolymers, and other metathesis reaction products. The supported catalyst and/or monomer can be recovered and recycled to the polymerization reactor.

Organosilicon Lewis acids supported on activated oxides and metal oxo complexes grafted on the organosilicon Lewis acids as heterogeneous catalysts and the related compositions, methods and systems are described. These organosilicon Lewis acids and the grafted metal oxo complexes catalyze industrially important chemical reactions including, respectively, CF bond activation and olefin metathesis reactions such as homocoupling and polymerizations.

The present invention is directed to reaction mixtures comprising a water-surfactant mixture, wherein the catalyst comprises a compound with solubilizing groups. This technology improves the solubility of the reaction components in the water-surfactant mixture and thereby, greatly increases the productivity and selectivity of the chemical reaction.

1) Hydrocarbon polymer of formula (I):

##STR00001##

F.sup.1 and F.sup.2 are exo-vinylene cyclocarbonate monovalent radicals of formulas (IIa) and (IIb):

##STR00002## g and d 0, 1, 2 or 3; A C1-C6 alkyl; X an oxygen atom or NR.sup.17 with R.sup.17 C1-C6 alkyl; R.sup.14, R.sup.15 and R.sup.16 a hydrogen atom or C1-C6 alkyl; R.sup.1 to R.sup.12 H or C1-C14 alkyl; R.sup.13 O or CH.sub.2; x 1 and y 1; n1 and n2 an integer or zero; m an integer or zero; p1 and p2 an integer or zero of non-zero sum; n1, n2, m, p1 and p2 such that the molecular weight of said polymer is 400 to 100,000 g/mol; process of preparation by ring-opening metathesis polymerization; and use as an adhesive in a mixture with an amine compound having at least 2 amine groups.

The present disclosure relates to a method of preparing an organic zinc catalyst through solid phase blending that does not require a solvent and a washing process, and a method of preparing a polyalkylene carbonate resin by using the organic zinc catalyst prepared thereby.

Disclosed herein are embodiments of methods for making and using functionalized forms of polydicyclopentadiene polymers. The disclosed polymers and methods enable a greater range of uses than the unmodified polydicyclopentadiene, which is currently used industrially. In addition, the presence of the functional groups contemplated by the disclosed compounds and formulae allow for the control of the polymer surface energy, and also enables the use of reversible chemical crosslinks, which permits recycling of the material.