Exxon Chemical Patents, Inc.

Koch-glitsch, Inc.

Koch Engineering Company, Inc.

Chris F Meyer

Jon E Stanat

David C Dankworth

William B Eckstrom

Chang-Li Hsieh

Ramesh R Hemrajani

Salvatore Rea

Ilya S Michelson

A continuous process for functionalizing polymers is disclosed, wherein (A) a liquid comprising the polymer and a gas comprising a functionalizing agent are continuously introduced into a dispersing zone operated in laminar flow with high intensity mixing of the liquid and the gas under functionalization conditions, wherein the mixing is conducted for a period of the dispersing zone residence time at a shear rate effective to form a stable gas-liquid dispersion in which the gas is substantially dissolved or dispersed in the liquid for functionalization, and wherein the shear rate is less than about 5 s.sup.-1 for no more than about 30% of the residence time; (B) the gas-liquid dispersion is continuously passed to a blending zone operated in laminar flow with low intensity mixing under functionalization conditions, wherein the mixing is conducted at a shear rate effective to further dissolve the gas into the liquid for further functionalization; and (C) continuously recovering functionalized polymer. The process can be used to carbonylate unsaturated polymers, and is particularly useful in reacting unsaturated polymers with carbon monoxide in the presence of a catalyst and a co-reactant selected from water, H.sub.2 S, alcohols, and thiols to produce functionalized polymer containing carboxylic (thio)acid or carboxylic (thio)ester functional groups.

Process for the continuous production of functionalized polymers

A liquid distributor apparatus and method for the distribution of a high viscosity liquid into a process vessel generally free of entrapped gas bubbles. The distributor apparatus includes a distributor for the high viscosity liquid with openings on the top of the distributor to vent gas entrapped in the high viscosity liquid. The distributor apparatus includes a feed pipe to deliver smoothly and without gas entrapment a high viscosity liquid from the distributor directly onto a cup-like or conical surface of a distributor tube to form a downwardly flowing film on the exterior surface of the distributor tube and to deliver the high viscosity liquid to the top section of the process vessel without gas entrapment. The method comprises venting gas from a high viscosity liquid and slowing the downward velocity of the vented, high viscosity liquid into the process vessel to avoid further gas entrapment.

Liquid distributor apparatus and method for high viscosity liquids

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Teaneck, NJ, United States of America

Chris F Meyer