Exxonmobil Chemical Patents Inc.

Exxonmobil Research and Engineering Company

Exxon Chemical Patents, Inc.

Paul Hamden Daniels

Allen David Godwin

Thomas Marshall Larson

Didier A Naert

Raphael Frans Caers

Claudius Gosse

Pierre Jean Paul Legrand

Jihad Mohammed Dakka

Richard Henry Schlosberg

Stephen Zushma

Edmund John Mozeleski

Catherine Anne Faler

Christine A Costello

Nicolaas Anthony De Munck

Diana S Smirnova

Larry O Jones

Pierre Osterrieth

Konstantinos R Rigopoulos

Raphael Frans Ivo Caers

Jörg Friedrich Wilhelm Weber

Leonard G Krauskopf

Claudius P Gosse

Pierre J P Legrand

Didier Naert

Thomas Larson

Pierre Legrand

Pierre Jean-Paul Legrand

Tomas M Larson

A method for performing a flying grade switch in an ester production process, which preferably is operated in semi-continuous mode, maximizes plant equipment productivity while minimizing product cross-contamination. Mixed ester products of the process containing a C-Calkyl or isodecyl benzoate together with a higher molecular weight di-alkyl phthalate or cyclohexanoate, bring performance advantages such as improved permanence in plasticized PVC articles or improved processability in manufacturing these articles.

Ester production

Esters of cyclohexane polycarboxylic acids are used as plasticisers for polyvinyl chloride to enable products with comparable mechanical properties to be obtained using less polyvinyl chloride. Use of these esters also produces formulations with increased stability to ultra-violet light, improved low temperature properties, lower viscosity and improved processability as well as reduced smoke on burning. The esters of cyclohexane polycarboxylic acids may be used alone or in admixture with other plasticisers when the esters of cyclohexane polycarboxylic acids may act as viscosity depressants. Fast fusing plasticisers may also be included. The formulations and processes of making these formulations are particularly useful in the production of a range of goods from semi-rigid to highly flexible materials and are particularly useful in the production of medical materials, toys, and food contact articles.

Plasticised polyvinyl chloride and processes for making the same

Provided are compounds of the formula: wherein m=0-3 and n=0-3, andRrepresents CHwherein x=0 to 4 or cyclohexane; Rrepresents H, a C-Calkyl group at any of the ortho-, meta- or para-positions, a residue including heteroatoms chosen from O, N, and S, or mixtures thereof; and Rand Rrepresent hydrocarbon residues of OXO-C-Calcohols which are different isomers of equal carbon number or different in carbon number. Also provided are processes for making the compounds and plasticized polymer compositions containing said compounds.

Alkyl aromatic plasticizers and methods of making

Esters of cyclohexane polycarboxylic acids are used as plasticizers for polyvinyl chloride to enable products with comparable mechanical properties to be obtained using less polyvinyl chloride. Use of these esters also produces formulations with increased stability to ultra-violet light, improved low temperature properties, lower viscosity and improved processability as well as reduced smoke on burning. The esters of cyclohexane polycarboxylic acids may be used alone or in admixture with other plasticizers when the esters of cyclohexane polycarboxylic acids may act as viscosity depressants. Fast fusing plasticizers may also be included. The formulations are particularly useful in the production of a range of goods from semi-rigid to highly flexible materials and are particularly useful in the production of medical materials such as blood bags and tubing.

Plasticised polyvinyl chloride

Esters of cyclohexane polycarboxylic acids are used as plasticisers for polyvinyl chloride to enable products with comparable mechanical properties to be obtained using less polyvinyl chloride. Use of these esters also produces formulations with increased stability to ultra-violet light, improved low temperature properties, lower viscosity and improved processability as well as reduced smoke on burning. The esters of cyclohexane polycarboxylic acids may be used alone or in admixture with other plasticisers when the esters of cyclohexane polycarboxylic acids may act as viscosity depressants. Fast fusing plasticisers may also be included. The formulations are particularly useful in the production of a range of goods from semi-rigid to highly flexible materials and are particularly useful in the production of medical materials such as blood bags and tubing.

Plasticized polyvinyl chloride

A process for the formation of esters from at least one phthalic anhydride residue stream produced from the vapor phase oxidation of o-xylene, naphthalene and/or the like which comprises: (a) adding a phthalic anhydride residue stream and a mono-alcohol to a reaction vessel to form a reaction mixture; and (b) heating the reaction mixture and maintaining a pressure sufficient to obtain boiling of the reaction mixture thereby converting any acid and/or anhydride components of the phthalic anhydride residue stream to an ester.

Preparation of plasticizer esters from phthalic anhydride residue

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League City, TX, United States of America

Paul Hamden Daniels