C07C9/22

Metallocene Dimer Selective Catalysts and Processes to Produce Poly Alpha-Olefin Dimers

The present disclosure generally relates to processes to produce alpha-olefin oligomers and poly alpha-olefins. In an embodiment, the present disclosure provides a process to produce a poly alpha-olefin (PAO), the process including: introducing a C.sub.6-C.sub.32 alpha-olefin and a catalyst system comprising activator and a metallocene compound into a continuous stirred tank reactor or a continuous tubular reactor under reaction conditions, wherein the alpha-olefin is introduced to the reactor at a flow rate of about 100 g/hr or more; and obtaining a product comprising PAO dimer and optional higher oligomers of alpha-olefin, or a combination thereof, the PAO dimer comprising 96 mol % or more of vinylidene, based on total moles of vinylidene, disubstituted vinylene, and trisubstituted vinylene in the product. In at least one embodiment, a process includes functionalizing and/or hydrogenating a PAO product of the present disclosure. In at least one embodiment, a blend includes a PAO product of the present disclosure.

Initiator system for cationic polymerization of olefins

A Brønsted-Lowry acid initiator system for cationic polymerization of an ethylenically unsaturated monomer involves an initiator having a structure of Formula (I) in an anhydrous polymerization medium: ##STR00001## where: M is tantalum (Ta), vanadium (V) or niobium (Nb); R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and are independently H, F, Cl, Br, I, alkyl or aryl, or two or more of R.sub.2, R.sub.3, R.sub.4 and R.sub.5 on a same benzene ring are taken together to form a bicyclic, tricyclic or tetracyclic moiety with the benzene ring, with the proviso that all of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 on the same benzene ring are not H; L is absent or a molecule that coordinates to H.sup.+; and, x is 0 when L is absent, or x is 0.5 or more when L is present.

Initiator system for cationic polymerization of olefins

A Brønsted-Lowry acid initiator system for cationic polymerization of an ethylenically unsaturated monomer involves an initiator having a structure of Formula (I) in an anhydrous polymerization medium: ##STR00001## where: M is tantalum (Ta), vanadium (V) or niobium (Nb); R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are the same or different and are independently H, F, Cl, Br, I, alkyl or aryl, or two or more of R.sub.2, R.sub.3, R.sub.4 and R.sub.5 on a same benzene ring are taken together to form a bicyclic, tricyclic or tetracyclic moiety with the benzene ring, with the proviso that all of R.sub.1, R.sub.2, R.sub.3 and R.sub.4 on the same benzene ring are not H; L is absent or a molecule that coordinates to H.sup.+; and, x is 0 when L is absent, or x is 0.5 or more when L is present.

Alphaolefin oligomer having uniform structure and method of preparing same
11214531 · 2022-01-04 · ·

The present invention relates to an alphaolefin oligomer having a uniform structure and a method of preparing the same, in which the alphaolefin oligomer has a uniform molecular structure with a low branch ratio, thereby exhibiting improved thermal and oxidative stability, a long service life, low volatility, a low pour point and a high viscosity index.

Alphaolefin oligomer having uniform structure and method of preparing same
11214531 · 2022-01-04 · ·

The present invention relates to an alphaolefin oligomer having a uniform structure and a method of preparing the same, in which the alphaolefin oligomer has a uniform molecular structure with a low branch ratio, thereby exhibiting improved thermal and oxidative stability, a long service life, low volatility, a low pour point and a high viscosity index.

PROCESS FOR THE SYNTHESIS OF HIGH-VALUE, LOW CARBON CHEMICAL PRODUCTS
20230332054 · 2023-10-19 ·

The present invention describes improved processes for the synthesis of high value chemical products from low carbon syngas. In one aspect, a process for the production of chemicals is provided. The process comprises the following: feeding a feedstock comprising hydrogen and carbon monoxide to a liquid fuel production reactor, wherein the liquid fuel production reactor comprises a catalyst, thereby producing a product, wherein the product comprises a liquid phase and a solid phase, and wherein the liquid phase comprises C5-C23 hydrocarbons and oxygenated hydrocarbons, and wherein the solid-phase comprises C24-C45 aliphatic hydrocarbons, and wherein the liquid phase is between 51 percent by volume and 99 percent by volume of the product.

PROCESS FOR THE SYNTHESIS OF HIGH-VALUE, LOW CARBON CHEMICAL PRODUCTS
20230332054 · 2023-10-19 ·

The present invention describes improved processes for the synthesis of high value chemical products from low carbon syngas. In one aspect, a process for the production of chemicals is provided. The process comprises the following: feeding a feedstock comprising hydrogen and carbon monoxide to a liquid fuel production reactor, wherein the liquid fuel production reactor comprises a catalyst, thereby producing a product, wherein the product comprises a liquid phase and a solid phase, and wherein the liquid phase comprises C5-C23 hydrocarbons and oxygenated hydrocarbons, and wherein the solid-phase comprises C24-C45 aliphatic hydrocarbons, and wherein the liquid phase is between 51 percent by volume and 99 percent by volume of the product.

Base oil synthesis via ionic catalyst oligomerization and waterless separation of the oligomerization catalyst

Described herein is a base oil synthesis via ionic catalyst oligomerization further utilizing a hydrophobic process for removing an ionic catalyst from a reaction mixture with a silica gel composition, specifically a reaction mixture comprising an oligomerization reaction to produce PAO utilizing an ionic catalyst wherein the ionic catalyst is removed post reaction.

Base oil synthesis via ionic catalyst oligomerization and waterless separation of the oligomerization catalyst

Described herein is a base oil synthesis via ionic catalyst oligomerization further utilizing a hydrophobic process for removing an ionic catalyst from a reaction mixture with a silica gel composition, specifically a reaction mixture comprising an oligomerization reaction to produce PAO utilizing an ionic catalyst wherein the ionic catalyst is removed post reaction.

SYNTHESIS OF TON FRAMEWORK TYPE MOLECULAR SIEVES
20230135430 · 2023-05-04 ·

A method is disclosed making a molecular of TON framework type having unique properties. The method uses 1,3,4-trimethylimidazolium cations as a structure directing agent and a combined source of silicon and aluminum selected from alumina-coated silica and aluminosilicate zeolites. The obtained molecular sieve can be used in processes for dewaxing paraffinic hydrocarbon feedstocks.