Exxon Research and Engineering Company

Exxon Chemical Patents, Inc.

Francisco M Benitez

Vincent L Hughes

Augustus B Small

Michael F English

Richard Henry Schlosberg

John R Hooton

Leonard G Krauskopf

James D Gerald

Plasticized PVC compositions are disclosed which are heat resistant and which exhibit low smoke generation where the plasticizer is a pentaerythritol ester of mixed C.sub.5, C.sub.7 and C.sub.9 alkanoic acids.

Polyol ester PVC plasticizers

Petroleum resins of lightened color while retaining satisfactory melting point and compatiblity are provided by a process which comprises heat soaking a petroleum cracking or reforming fraction containing cationically polymerizable hydrocarbons and from 2 to more than 0.5 weight percent of cyclodienes until the cyclodiene content is no more than 0.5 weight percent distilling said heat soaked petroleum fraction and polymerizing said distilled petroleum fraction in the presence of a polymerization catalyst.

Process for preparing light colored petroleum resins and resins produced

This invention relates to pressure sensitive adhesive formulations which include a block copolymer of styrene and isoprene such as Kraton.RTM. D and a tackifying resin derived from petroleum feedstock polymerized in the presence of aluminum chloride and having a Mw ranging from 800 to 960, a Mn ranging from 500 to 600 with a Mw/Mn ratio of from 1.3 to 1.9, a softening point of 78.degree. to 81.degree. C. and a glass transition temperature of about 50.degree. C. whereby the adhesive formulations have a rolling ball tack of less than 5 cm., a 180.degree. peel of higher than 3 pounds per inch, a 90.degree. quick stick of higher than 3 pounds per inch and a Polyken tack of higher than 1,000 g/cm.sup.2.

Petroleum resin and pressure sensitive adhesive formulations utilizing

In a process in which a C.sub.5 -C.sub.12 feedstock has been distilled from a cracked petroleum fraction and polymerized with the help of a Friedel-Crafts catalyst to produce a petroleum resin, the C.sub.5 -C.sub.12 feedstock is first dried to a moisture content of less than about 10 ppm water and then contacted with anhydrous hydrogen halide, usually HCl, prior to polymerization.

Catalytic process for the production of petroleum resins

Petroleum resins of lightened color while retaining satisfactory melting point and compatibility are provided by a process which comprises heat soaking a petroleum cracking or reforming fraction containing cationically polymerizable hydrocarbons and from 2 to more than 0.5 weight percent of cyclodienes until the cyclodiene content is no more than 0.5 weight percent distilling said heat soaked petroleum fraction and polymerizing said distilled petroleum fraction in the presence of a polymerization catalyst.

The esterification of neo acids catalyzed by the presence of a macro-reticular structured sulfonic acid cation exchange resin proceeds under mild conditions with a wide variety of alcohols to give readily recoverable esters in high yields and high purity and an easily recoverable and reusable catalyst.

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Baton Rouge, LA, United States of America

Francisco M Benitez