The synthesis and structure of beta-diketiminate manganese compounds are described, as well as their use as catalysts for the hydrosilylation and hydroboration of unsaturated organic compounds and main group element-main group element bond formation via dehydrogenative coupling.

The present invention relates to a method for preparing a cocatalyst compound using an anhydrous hydrocarbon solvent, and a cocatalyst compound prepared thereby.

The present disclosure provides a Lewis acid-base pair catalytic initiator and an application thereof. The Lewis acid-base pair catalytic initiator includes a Lewis acid and a Lewis base, the Lewis acid having a structural general formula as shown in formula (I) and the Lewis base having a structural general formula as shown in formula (II); wherein: the A is selected from element Baron or element Aluminum; the R.sub.1, R.sub.2, R.sub.3, R.sub.4 are independently selected from alkyl, alkoxy, aryl or halogen groups; the alkyl or alkoxy have a carbon number being equal to or greater than 1 to equal to or less than 16; the aryl contains substituents with the number being equal to or less than 5, the substituents being selected from methyl, methoxy or halogen; n is selected from an integer from 1 to 16.

A composition, comprising: trisilylamine and less than 5 ppmw of halogen. A method of making a silylamine comprising combining ammonia and a compound comprising aminosilane functionality, where the compound comprising aminosilane functionality is according to formula (I) R.sup.1 N(R.sup.2)a(SiH.sub.3).sub.2−a (I), where R.sup.1 is an organic polymer, a C-.sub.1-20 hydrocarbyl group or —SiR.sup.3.sub.3.sup.1, where R.sup.3 is C.sub.1-6 hydrocarbyl, R.sup.2 is a C-.sub.1-20 hydrocarbyl group, H, or —SiR.sup.3.sub.3.sup.1, where R.sup.3 is as defined above, subscript a is 0 or 1, provided that R.sup.1 and R.sup.2 may be the same or different except if R.sup.1 is phenyl, R.sup.2 is not phenyl, under sufficient conditions to cause a reaction to form a silylamine and a byproduct.

The present invention relates to a method for the deactivation of an acid catalyst during the production process of a polyoxymethylene copolymer (cPOM) by adding triisopropanolamine (tris(2-hydroxypropyl)amine) to a mixture which comprises the polyoxymethylene copolymer (cPOM) and the acid catalyst.

A process to produce a branched ethylene-α-olefin diene elastomer comprising combining a catalyst precursor and an activator with a feed comprising ethylene, C3 to C12 α-olefins, and a dual-polymerizable diene to obtain a branched ethylene-α-olefin diene elastomer; where the catalyst precursor is selected from pyridyldiamide and quinolinyldiamido transition metal complexes. The branched ethylene-α-olefin diene elastomer may comprise within a range from 40 to 80 wt % of ethylene-derived units by weight of the branched ethylene-α-olefin diene elastomer, and 0.1 to 2 wt % of singly-polymerizable diene derived units, 0.1 to 2 wt % of singly-polymerizable diene derived units, and the remainder comprising C3 to C12 α-olefin derived units, wherein the branched ethylene-α-olefin diene elastomer has a weight average molecular weight (M.sub.w) within a range from 100 kg/mole to 300 kg/mole, an average branching index (g′.sub.avgg) of 0.9 or more, and a branching index at very high M.sub.w (g′.sub.1000) of less than 0.9.

Methods of making polyisobutylene and catalyst systems are described. Polyisobutylene compositions and catalyst system compositions are also described. In some embodiments, a method of making a catalyst system includes: providing a support material comprising one or more ion exchange resins; dehydrating the support material; and forming a catalyst system by adding to the support material (a) a mixture comprising BF.sub.3, (b) a mixture comprising BF.sub.3 and a complexing agent, or (c) both. In some embodiments, a method of making a polymer composition includes providing a catalyst system comprising: (a) a support material comprising one or more ion exchange resins, and (b) BF.sub.3; providing a feedstock comprising isobutylene; forming a reaction mixture comprising the feedstock and the catalyst system; contacting the isobutylene with the catalyst system; and obtaining a polymer composition.

The present disclosure is related to an accelerator composition for the cure of polyfunctional isocyanates with epoxy resins comprising (a) a boron trihalide-amine complex, and (b) a quaternary ammonium or phosphonium halide as well as the use of such accelerator composition, cured isocyanate-epoxy resin products obtainable therefrom and a method of making a cured isocyanate-epoxy resin product.

A polysiloxane resin—polyolefin copolymer may be prepared using either a hydrosilylation catalyst or a Lewis Acid catalyst. The copolymer may have polyorganosilicate or silsesquioxane resin blocks. The copolymer may have polyethylene or poly(ethylene/octene) blocks.

The present invention relates to a bisphosphine ligand compound, a chromium compound prepared using same, an ethylene oligomerization catalyst system containing the chromium compound, and an ethylene oligomer preparing method, wherein the bisphosphine ligand compound is suitable for mass production and commercial processes, allows extremely high activity to be compatible with excellent economical benefit, and increases selectivity for ethylene oligomerization reaction, thereby being able to be used to manufacture 1-hexene and/or 1-octene at high yield.