Ptt Global Chemical Public Company Limited

Cenan Ozmeral

Yuriy Roman-Leshkov

Ramnik Singh

Michael Mang

Rajesh Dasari

Yu Noda

Jay L Milan

Robert M Rioux

This invention relates to polymerization of muconic acid and its derivatives. Muconic acid useful for the invention can be in any of its isomeric forms including cis, cis-muconic acid (ccMA), cis, trans-muconic acid (ctMA), and trans, trans-muconic acid (ttMA). Muconic acid used in the invention can be derived either from renewable carbon resources through biological fermentation or from non-renewable petrochemical resources through biological fermentation or chemical conversion.

Polymers from muconic acid isomers and its derivatives

Described herein are solid acid catalysts and the methods for catalytically preparing &#x3b1;,&#x3b2;-unsaturated carboxylic acids and/or esters thereof. In one aspect, a zeolite catalyst may be used. The catalyst may, in certain embodiments, be modified to improve the selectivity and/or conversion of a reaction. For instance, a catalyst may be modified by ion exchange to achieve a desirable acidity profile in order to achieve high level of conversion of reactants and selectivity for desirable products of the catalytic reaction. In another aspect, a variety of feed stocks (e.g., starting compositions) may be used including an &#x3b1;-hydroxycarboxylic acid, an &#x3b1;-hydroxycarboxylic acid ester, a &#x3b2;-hydroxycarboxylic acid, a &#x3b2;-hydroxycarboxylic acid ester, cyclic esters thereof (e.g., lactide), and combinations thereof.

Method to produce acrylic acid with acetaldehyde as the main by-product

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Charlotte, NC, United States of America

Cenan Ozmeral