Arco Chemical Technology, L.p.

Equistar Chemicals, LP

Lyondell Chemical Technology, L.p.

Arco Chemical Company

Lyondellbasell Acetyls, LLC

Shao-Hua Guo

Wei D Wang

Shaotian Wang

Robert G Gastinger

Roger A Grey

Noel C Hallinan

Maged G Botros

Daniel B Pourreau

Jia-Chu X Liu

James M O'Connor

Brian A Salisbury

Charles S Holland

Stephen Herbert Harris

Mark P Mack

Donald L Lickei

Michael J Morgan

Paul E Galick

Larry W Arndt

Ellen S Lenz

David R Kinney

Shanti P Patel

L Joseph Junker

A method for removing hydrocarbon impurities from an acetic acid production intermediate is disclosed. The method comprises extracting the intermediate with a hydrocarbon extracting agent. The extraction is preferably performed with the alkane distillation bottom stream which comprises methyl iodide, acetic acid, and hydrocarbon impurities. The extraction forms a light phase which comprises the hydrocarbon impurity and the extracting agent and a heavy phase which comprises methyl iodide and acetic acid. The extraction heavy phase is optionally recycled to the alkane distillation or to the carbonylation reaction.

Removing hydrocarbon impurities from acetic acid production intermediate

A process for polymerizing unsaturated monomers is disclosed. The process comprises polymerizing, in the presence of a late transition metal catalyst (LTMC), a variety of unsaturated monomers which are traditionally, some of which are exclusively, made by free radical polymerizations. The LTMC polymerization provides the polymer with improved properties such as no free radical residue and narrow molecular weight distribution.

LTMC polymerization of unsaturated monomers

A method for removing permanganate-reducing impurities from an acetic acid product is disclosed. The method comprises contacting an acetic acid product containing permanganate-reducing impurities with peracetic acid and an oxygen-containing gas. The method is particularly suitable for post treatment of acetic acid that contains permanganate-reducing impurities such as crotonaldehyde.

Removing permanganate-reducing impurities from acetic acid

Disclosed is a process for polymerizing olefins. The process comprises polymerizing one or more olefins with a single-site catalyst in two or more polymerization stages. The catalyst comprises a transition metal complex, an activator, and a hydroxyl functional polymer. The complex, the activator, or both are chemically bound to the hydroxyl functional polymer.

Olefin polymerization with polymer bound single-site catalysts

A drycleaning method is disclosed. In the method, a composition that comprises dipropylene glycol n-propyl ether (DPnP) and is essentially free of siloxanes or polysulfonic acids is used. The composition contains at least about 80 wt. % DPnP and up to about 15 wt. % of water. The method enables superior stain removal while avoiding excessive fabric shrinkage or soil redeposition.

Drycleaning method using dipropylene glycol n-propyl ether

A modified aluminoxane is disclosed. Aluminoxane compounds are modified with glycol ethers or polyethers. The modified aluminoxanes are effective activators for single-site catalysts. Catalyst activated with the modified aluminoxane produces polyolefin with increased melt flow index, broadened molecular weight distribution, and improved thermal processability.

Polymerization catalyst system containing polyether-modified aluminoxane

A single-site catalyst is disclosed. The catalyst comprises a transition metal complex, an activator, and an allylic alcohol-containing polymer. The catalyst has high activity and great capability to incorporate higher &#x3b1;-olefins into polyethylene. The polyethylene produced has high molecular weight and low density.

Polymer bound single-site catalysts

A UV-curable composition is disclosed. The composition comprises a crosslinking agent, a hydroxyalkyl acrylate or methacrylate, and an acrylic polyol. The crosslinking agent is selected from the group consisting of multifunctional isocyanates, melamines, and silanes. The acrylic polyol comprises recurring units of an allylic alcohol. The composition can be irradiated to be solidified and then fully cured by the urethane, melamine, or silane reactions. Alternatively, the composition can be cured by the urethane, melamine, or silane reactions, and then fully cured by radiation. The invention provides low VOC but high performance coatings. More importantly, the invention provides a UV-curable system without the need for acrylated oligomers.

UV-curable compositions

A process for making olefin-acrylic copolymers is disclosed. The process comprises polymerizing an olefin and an acrylic monomer in the presence of an activator and a Group 8-10 late transition metal complex. The late transition metal catalyst contains an isoindoline ligand.

Preparation of olefin-acrylic copolymers with late transition metal catalysts

Aluminoxane modification

Coating and ink compositions based on organic solvents that have negligible photochemical reactivity and methods for making them are disclosed. The organic solvents have calculated oxidation rate constants of less than about 1&times;10 cm /g&middot;sec, and evaporation rates of not more than about 5 times that of n-butyl acetate. Coatings made by the method of the invention are used for wood, furniture, automotive, container, architectural, coil, aerosol, marine, transportation, industrial, ink, overprint varnish, and road-coating applications.

Coatings and inks based on solvents having negligible photochemical reactivity

A process for preparing vinyl aromatic-allylic alcohol copolymers, such as styrene-allyl alcohol (SAA) copolymers, is disclosed. The process is conducted in the presence of a solvent, which enables the preparation of copolymers having both low hydroxyl functionalities and low molecular weights. SAA copolymers produced by the process have an average hydroxyl functionality less than about 4.

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West Goshen, PA, United States of America

Shao-Hua Guo